Bump version to 0.4.4

Fixed also game bug drawing dragged item behind fields, buttons etc.

CMakeLists.txt

@@ -12,7 +12,7 @@ set(VERSION_EXTRA "" CACHE STRING "Stuff to append to version string")
 # Also remember to set PROTOCOL_VERSION in clientserver.h when releasing
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 4)
-set(VERSION_PATCH 3)
+set(VERSION_PATCH 4)
 if(VERSION_EXTRA)
 	set(VERSION_PATCH ${VERSION_PATCH}-${VERSION_EXTRA})
 endif()
@@ -131,6 +131,7 @@ if(NOT CUSTOM_LOCALEDIR STREQUAL "")
 endif()
 
 install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/builtin" DESTINATION "${SHAREDIR}")
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/client" DESTINATION "${SHAREDIR}")
 install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/games/minimal" DESTINATION "${SHAREDIR}/games")
 set(MINETEST_GAME_SOURCE "${CMAKE_CURRENT_SOURCE_DIR}/games/minetest_game")
 if(EXISTS ${MINETEST_GAME_SOURCE} AND IS_DIRECTORY ${MINETEST_GAME_SOURCE})

builtin/builtin.lua

@@ -22,4 +22,5 @@ dofile(minetest.get_modpath("__builtin").."/auth.lua")
 dofile(minetest.get_modpath("__builtin").."/chatcommands.lua")
 dofile(minetest.get_modpath("__builtin").."/static_spawn.lua")
 dofile(minetest.get_modpath("__builtin").."/detached_inventory.lua")
+dofile(minetest.get_modpath("__builtin").."/falling.lua")
 

builtin/chatcommands.lua

@@ -138,6 +138,7 @@ minetest.register_chatcommand("grant", {
 			return
 		end
 		minetest.set_player_privs(grantname, privs)
+		minetest.log(name..' granted ('..minetest.privs_to_string(grantprivs, ', ')..') privileges to '..grantname)
 		minetest.chat_send_player(name, "Privileges of "..grantname..": "..minetest.privs_to_string(minetest.get_player_privs(grantname), ' '))
 		if grantname ~= name then
 			minetest.chat_send_player(grantname, name.." granted you privileges: "..minetest.privs_to_string(grantprivs, ' '))
@@ -175,6 +176,7 @@ minetest.register_chatcommand("revoke", {
 			end
 		end
 		minetest.set_player_privs(revokename, privs)
+		minetest.log(name..' revoked ('..minetest.privs_to_string(revokeprivs, ', ')..') privileges from '..revokename)
 		minetest.chat_send_player(name, "Privileges of "..revokename..": "..minetest.privs_to_string(minetest.get_player_privs(revokename), ' '))
 		if revokename ~= name then
 			minetest.chat_send_player(revokename, name.." revoked privileges from you: "..minetest.privs_to_string(revokeprivs, ' '))
@@ -215,8 +217,8 @@ minetest.register_chatcommand("clearpassword", {
 	privs = {password=true},
 	func = function(name, param)
 		toname = param
-		if not toname then
-			minetest.chat_send_player(toname, "Name field required")
+		if toname == "" then
+			minetest.chat_send_player(name, "Name field required")
 			return
 		end
 		minetest.set_player_password(toname, '')

builtin/falling.lua

@@ -0,0 +1,190 @@
+-- Minetest: builtin/item.lua
+
+--
+-- Falling stuff
+--
+
+minetest.register_entity("__builtin:falling_node", {
+	initial_properties = {
+		physical = true,
+		collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
+		visual = "wielditem",
+		textures = {},
+		visual_size = {x=0.667, y=0.667},
+	},
+
+	nodename = "",
+
+	set_node = function(self, nodename)
+		self.nodename = nodename
+		local stack = ItemStack(nodename)
+		local itemtable = stack:to_table()
+		local itemname = nil
+		if itemtable then
+			itemname = stack:to_table().name
+		end
+		local item_texture = nil
+		local item_type = ""
+		if minetest.registered_items[itemname] then
+			item_texture = minetest.registered_items[itemname].inventory_image
+			item_type = minetest.registered_items[itemname].type
+		end
+		prop = {
+			is_visible = true,
+			textures = {nodename},
+		}
+		self.object:set_properties(prop)
+	end,
+
+	get_staticdata = function(self)
+		return self.nodename
+	end,
+
+	on_activate = function(self, staticdata)
+		self.nodename = staticdata
+		self.object:set_armor_groups({immortal=1})
+		--self.object:setacceleration({x=0, y=-10, z=0})
+		self:set_node(self.nodename)
+	end,
+
+	on_step = function(self, dtime)
+		-- Set gravity
+		self.object:setacceleration({x=0, y=-10, z=0})
+		-- Turn to actual sand when collides to ground or just move
+		local pos = self.object:getpos()
+		local bcp = {x=pos.x, y=pos.y-0.7, z=pos.z} -- Position of bottom center point
+		local bcn = minetest.env:get_node(bcp)
+		-- Note: walkable is in the node definition, not in item groups
+		if minetest.registered_nodes[bcn.name] and
+				minetest.registered_nodes[bcn.name].walkable then
+			local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
+			-- Check what's here
+			local n2 = minetest.env:get_node(np)
+			-- If it's not air or liquid, remove node and replace it with
+			-- it's drops
+			if n2.name ~= "air" and (not minetest.registered_nodes[n2.name] or
+					minetest.registered_nodes[n2.name].liquidtype == "none") then
+				local drops = minetest.get_node_drops(n2.name, "")
+				minetest.env:remove_node(np)
+				-- Add dropped items
+				local _, dropped_item
+				for _, dropped_item in ipairs(drops) do
+					minetest.env:add_item(np, dropped_item)
+				end
+				-- Run script hook
+				local _, callback
+				for _, callback in ipairs(minetest.registered_on_dignodes) do
+					callback(np, n2, nil)
+				end
+			end
+			-- Create node and remove entity
+			minetest.env:add_node(np, {name=self.nodename})
+			self.object:remove()
+		else
+			-- Do nothing
+		end
+	end
+})
+
+function spawn_falling_node(p, nodename)
+	obj = minetest.env:add_entity(p, "__builtin:falling_node")
+	obj:get_luaentity():set_node(nodename)
+end
+
+function drop_attached_node(p)
+	local nn = minetest.env:get_node(p).name
+	minetest.env:remove_node(p)
+	for _,item in ipairs(minetest.get_node_drops(nn, "")) do
+		local pos = {
+			x = p.x + math.random(60)/60-0.3,
+			y = p.y + math.random(60)/60-0.3,
+			z = p.z + math.random(60)/60-0.3,
+		}
+		minetest.env:add_item(pos, item)
+	end
+end
+
+function check_attached_node(p, n)
+	local def = minetest.registered_nodes[n.name]
+	local d = {x=0, y=0, z=0}
+	if def.paramtype2 == "wallmounted" then
+		if n.param2 == 0 then
+			d.y = 1
+		elseif n.param2 == 1 then
+			d.y = -1
+		elseif n.param2 == 2 then
+			d.x = 1
+		elseif n.param2 == 3 then
+			d.x = -1
+		elseif n.param2 == 4 then
+			d.z = 1
+		elseif n.param2 == 5 then
+			d.z = -1
+		end
+	else
+		d.y = -1
+	end
+	local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
+	local nn = minetest.env:get_node(p2).name
+	local def2 = minetest.registered_nodes[nn]
+	if def2 and not def2.walkable then
+		return false
+	end
+	return true
+end
+
+--
+-- Some common functions
+--
+
+function nodeupdate_single(p)
+	n = minetest.env:get_node(p)
+	if minetest.get_node_group(n.name, "falling_node") ~= 0 then
+		p_bottom = {x=p.x, y=p.y-1, z=p.z}
+		n_bottom = minetest.env:get_node(p_bottom)
+		-- Note: walkable is in the node definition, not in item groups
+		if minetest.registered_nodes[n_bottom.name] and
+				not minetest.registered_nodes[n_bottom.name].walkable then
+			minetest.env:remove_node(p)
+			spawn_falling_node(p, n.name)
+			nodeupdate(p)
+		end
+	end
+	
+	if minetest.get_node_group(n.name, "attached_node") ~= 0 then
+		if not check_attached_node(p, n) then
+			drop_attached_node(p)
+			nodeupdate(p)
+		end
+	end
+end
+
+function nodeupdate(p)
+	-- Round p to prevent falling entities to get stuck
+	p.x = math.floor(p.x+0.5)
+	p.y = math.floor(p.y+0.5)
+	p.z = math.floor(p.z+0.5)
+	
+	for x = -1,1 do
+	for y = -1,1 do
+	for z = -1,1 do
+		p2 = {x=p.x+x, y=p.y+y, z=p.z+z}
+		nodeupdate_single(p2)
+	end
+	end
+	end
+end
+
+--
+-- Global callbacks
+--
+
+function on_placenode(p, node)
+	nodeupdate(p)
+end
+minetest.register_on_placenode(on_placenode)
+
+function on_dignode(p, node)
+	nodeupdate(p)
+end
+minetest.register_on_dignode(on_dignode)

builtin/item.lua

@@ -76,10 +76,10 @@ function minetest.get_node_drops(nodename, toolname)
 	local drop = ItemStack({name=nodename}):get_definition().drop
 	if drop == nil then
 		-- default drop
-		return {ItemStack({name=nodename})}
+		return {nodename}
 	elseif type(drop) == "string" then
 		-- itemstring drop
-		return {ItemStack(drop)}
+		return {drop}
 	elseif drop.items == nil then
 		-- drop = {} to disable default drop
 		return {}
@@ -181,6 +181,14 @@ function minetest.item_place_node(itemstack, placer, pointed_thing)
 		end
 	end
 
+	-- Check if the node is attached and if it can be placed there
+	if minetest.get_item_group(def.name, "attached_node") ~= 0 and
+		not check_attached_node(place_to, newnode) then
+		minetest.log("action", "attached node " .. def.name ..
+			" can not be placed at " .. minetest.pos_to_string(place_to))
+		return
+	end
+
 	-- Add node and update
 	minetest.env:add_node(place_to, newnode)
 

builtin/item_entity.lua

@@ -57,11 +57,23 @@ minetest.register_entity("__builtin:item", {
 	end,
 
 	get_staticdata = function(self)
-		return self.itemstring
+		--return self.itemstring
+		return minetest.serialize({
+			itemstring = self.itemstring,
+			always_collect = self.always_collect,
+		})
 	end,
 
 	on_activate = function(self, staticdata)
-		self.itemstring = staticdata
+		if string.sub(staticdata, 1, string.len("return")) == "return" then
+			local data = minetest.deserialize(staticdata)
+			if data and type(data) == "table" then
+				self.itemstring = data.itemstring
+				self.always_collect = data.always_collect
+			end
+		else
+			self.itemstring = staticdata
+		end
 		self.object:set_armor_groups({immortal=1})
 		self.object:setvelocity({x=0, y=2, z=0})
 		self.object:setacceleration({x=0, y=-10, z=0})

builtin/misc_register.lua

@@ -259,6 +259,7 @@ minetest.register_node(":air", {
 	diggable = false,
 	buildable_to = true,
 	air_equivalent = true,
+	drop = "",
 	groups = {not_in_creative_inventory=1},
 })
 
@@ -274,6 +275,7 @@ minetest.register_node(":ignore", {
 	diggable = false,
 	buildable_to = true, -- A way to remove accidentally placed ignores
 	air_equivalent = true,
+	drop = "",
 	groups = {not_in_creative_inventory=1},
 })
 
@@ -301,6 +303,7 @@ end
 
 minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
 minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
+minetest.registered_on_shutdown, minetest.register_on_shutdown = make_registration()
 minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
 minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
 minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()

client/shaders/test_shader_1/base.txt

@@ -0,0 +1 @@
+trans_alphach_ref

client/shaders/test_shader_1/opengl_fragment.glsl

@@ -0,0 +1,25 @@
+
+uniform sampler2D myTexture;
+uniform vec4 skyBgColor;
+uniform float fogDistance;
+
+varying vec3 vPosition;
+
+void main (void)
+{
+    //vec4 col = vec4(1.0, 0.0, 0.0, 1.0);
+    vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));
+	float a = col.a;
+    col *= gl_Color;
+	col = col * col; // SRGB -> Linear
+	col *= 1.8;
+	col.r = 1.0 - exp(1.0 - col.r) / exp(1.0);
+	col.g = 1.0 - exp(1.0 - col.g) / exp(1.0);
+	col.b = 1.0 - exp(1.0 - col.b) / exp(1.0);
+	col = sqrt(col); // Linear -> SRGB
+	if(fogDistance != 0.0){
+		float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
+		col = mix(col, skyBgColor, d);
+	}
+    gl_FragColor = vec4(col.r, col.g, col.b, a);
+}

client/shaders/test_shader_1/opengl_vertex.glsl

@@ -0,0 +1,58 @@
+
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform float dayNightRatio;
+
+varying vec3 vPosition;
+
+void main(void)
+{
+	gl_Position = mWorldViewProj * gl_Vertex;
+
+	vPosition = (mWorldViewProj * gl_Vertex).xyz;
+
+	vec4 color;
+	//color = vec4(1.0, 1.0, 1.0, 1.0);
+
+	float day = gl_Color.r;
+	float night = gl_Color.g;
+	float light_source = gl_Color.b;
+
+	/*color.r = mix(night, day, dayNightRatio);
+	color.g = color.r;
+	color.b = color.r;*/
+
+	float rg = mix(night, day, dayNightRatio);
+	rg += light_source * 1.0; // Make light sources brighter
+	float b = rg;
+
+	// Moonlight is blue
+	b += (day - night) / 13.0;
+	rg -= (day - night) / 13.0;
+
+	// Emphase blue a bit in darker places
+	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+	b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
+
+	// Artificial light is yellow-ish
+	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+	rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
+
+	color.r = rg;
+	color.g = rg;
+	color.b = b;
+
+	// Make sides and bottom darker than the top
+	color = color * color; // SRGB -> Linear
+	if(gl_Normal.y <= 0.5)
+		color *= 0.6;
+		//color *= 0.7;
+	color = sqrt(color); // Linear -> SRGB
+
+	color.a = gl_Color.a;
+
+	gl_FrontColor = gl_BackColor = color;
+
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+}

client/shaders/test_shader_2/base.txt

@@ -0,0 +1 @@
+trans_alphach

client/shaders/test_shader_2/opengl_fragment.glsl

@@ -0,0 +1,23 @@
+
+uniform sampler2D myTexture;
+uniform float fogDistance;
+
+varying vec3 vPosition;
+
+void main (void)
+{
+    vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));
+    col *= gl_Color;
+	float a = gl_Color.a;
+	col = col * col; // SRGB -> Linear
+	col *= 1.8;
+	col.r = 1.0 - exp(1.0 - col.r) / exp(1.0);
+	col.g = 1.0 - exp(1.0 - col.g) / exp(1.0);
+	col.b = 1.0 - exp(1.0 - col.b) / exp(1.0);
+	col = sqrt(col); // Linear -> SRGB
+	if(fogDistance != 0.0){
+		float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
+		a = mix(a, 0.0, d);
+	}
+	gl_FragColor = vec4(col.r, col.g, col.b, a);
+}

client/shaders/test_shader_2/opengl_vertex.glsl

@@ -0,0 +1,53 @@
+
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform float dayNightRatio;
+
+varying vec3 vPosition;
+
+void main(void)
+{
+	vec4 pos = gl_Vertex;
+	pos.y -= 2.0;
+	gl_Position = mWorldViewProj * pos;
+
+	vPosition = (mWorldViewProj * gl_Vertex).xyz;
+
+	vec4 color;
+	//color = vec4(1.0, 1.0, 1.0, 1.0);
+
+	float day = gl_Color.r;
+	float night = gl_Color.g;
+	float light_source = gl_Color.b;
+
+	/*color.r = mix(night, day, dayNightRatio);
+	color.g = color.r;
+	color.b = color.r;*/
+
+	float rg = mix(night, day, dayNightRatio);
+	rg += light_source * 1.0; // Make light sources brighter
+	float b = rg;
+
+	// Moonlight is blue
+	b += (day - night) / 13.0;
+	rg -= (day - night) / 13.0;
+
+	// Emphase blue a bit in darker places
+	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+	b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
+
+	// Artificial light is yellow-ish
+	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
+	rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
+
+	color.r = rg;
+	color.g = rg;
+	color.b = b;
+
+	color.a = gl_Color.a;
+
+	gl_FrontColor = gl_BackColor = color;
+
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+}

doc/lua_api.txt

@@ -1,4 +1,4 @@
-Minetest Lua Modding API Reference 0.4.0
+Minetest Lua Modding API Reference 0.4.4
 ==========================================
 More information at http://c55.me/minetest/
 
@@ -456,6 +456,10 @@ Special groups
 - disable_jump: Player (and possibly other things) cannot jump from node
 - fall_damage_add_percent: damage speed = speed * (1 + value/100)
 - bouncy: value is bounce speed in percent
+- falling_node: if there is no walkable block under the node it will fall
+- attached_node: if the node under it is not a walkable block the node will be
+                  dropped as an item. If the node is wallmounted the
+                  wallmounted direction is checked.
 
 Known damage and digging time defining groups
 ----------------------------------------------
@@ -693,6 +697,15 @@ image[<X>,<Y>;<W>,<H>;<texture name>]
 ^ Show an image
 ^ Position and size units are inventory slots
 
+item_image[<X>,<Y>;<W>,<H>;<item name>]
+^ Show an inventory image of registered item/node
+^ Position and size units are inventory slots
+
+background[<X>,<Y>;<W>,<H>;<texture name>]
+^ Use a background. Inventory rectangles are not drawn then.
+^ Position and size units are inventory slots
+^ Example for formspec 8x4 in 16x resolution: image shall be sized 8*16px x 4*16px
+
 field[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]
 ^ Textual field; will be sent to server when a button is clicked
 ^ x and y position the field relative to the top left of the menu
@@ -729,6 +742,12 @@ image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]
 ^ image is the filename of an image
 ^ Position and size units are inventory slots
 
+item_image_button[<X>,<Y>;<W>,<H>;<item name>;<name>;<label>]
+^ x, y, w, h, name and label work as per button
+^ item name is the registered name of an item/node,
+  tooltip will be made out of its descritption
+^ Position and size units are inventory slots
+
 button_exit[<X>,<Y>;<W>,<H>;<name>;<label>]
 ^ When clicked, fields will be sent and the form will quit.
 
@@ -786,6 +805,11 @@ minetest.register_craft(recipe)
 Global callback registration functions: (Call these only at load time)
 minetest.register_globalstep(func(dtime))
 ^ Called every server step, usually interval of 0.05s
+minetest.register_on_shutdown(func())
+^ Called before server shutdown
+^ WARNING: If the server terminates abnormally (i.e. crashes), the registered
+           callbacks WILL LIKELY NOT BE RUN.  Data should be saved at
+           semi-frequent intervals as well as on server shutdown.
 minetest.register_on_placenode(func(pos, newnode, placer, oldnode))
 ^ Called when a node has been placed
 ^ Deprecated: Use on_construct or after_place_node in node definition instead
@@ -1087,6 +1111,7 @@ methods:
 - punch(puncher, time_from_last_punch, tool_capabilities, direction)
   ^ puncher = an another ObjectRef,
   ^ time_from_last_punch = time since last punch action of the puncher
+  ^ direction: can be nil
 - right_click(clicker); clicker = an another ObjectRef
 - get_hp(): returns number of hitpoints (2 * number of hearts)
 - set_hp(hp): set number of hitpoints (2 * number of hearts)
@@ -1096,6 +1121,10 @@ methods:
 - get_wielded_item() -> ItemStack
 - set_wielded_item(item): replaces the wielded item, returns true if successful
 - set_armor_groups({group1=rating, group2=rating, ...})
+- set_animation({x=1,y=1}, frame_speed=15, frame_blend=0)
+- set_attach(parent, "", {x=0,y=0,z=0}, {x=0,y=0,z=0})
+- set_detach()
+- set_bone_position("", {x=0,y=0,z=0}, {x=0,y=0,z=0})
 - set_properties(object property table)
 LuaEntitySAO-only: (no-op for other objects)
 - setvelocity({x=num, y=num, z=num})
@@ -1121,7 +1150,11 @@ Player-only: (no-op for other objects)
   ^ Redefine player's inventory form
   ^ Should usually be called in on_joinplayer
 - get_inventory_formspec() -> formspec string
-
+- get_player_control(): returns table with player pressed keys
+	{jump=bool,right=bool,left=bool,LMB=bool,RMB=bool,sneak=bool,aux1=bool,down=bool,up=bool}
+- get_player_control_bits(): returns integer with bit packed player pressed keys
+	bit nr/meaning: 0/up ,1/down ,2/left ,3/right ,4/jump ,5/aux1 ,6/sneak ,7/LMB ,8/RMB
+	
 InvRef: Reference to an inventory
 methods:
 - is_empty(listname): return true if list is empty
@@ -1220,9 +1253,11 @@ Object Properties
     physical = true,
     weight = 5,
     collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
-    visual = "cube"/"sprite"/"upright_sprite",
+    visual = "cube"/"sprite"/"upright_sprite"/"mesh",
     visual_size = {x=1, y=1},
+    mesh = "model",
     textures = {}, -- number of required textures depends on visual
+    colors = {}, -- number of required colors depends on visual
     spritediv = {x=1, y=1},
     initial_sprite_basepos = {x=0, y=0},
     is_visible = true,
@@ -1236,7 +1271,7 @@ Entity definition (register_entity)
     
     initial_properties = <initial object properties>,
 
-    on_activate = function(self, staticdata),
+    on_activate = function(self, staticdata, dtime_s),
     on_step = function(self, dtime),
     on_punch = function(self, hitter),
     on_rightclick = function(self, clicker),
@@ -1345,6 +1380,8 @@ Node definition (register_node)
     liquid_alternative_flowing = "", -- Flowing version of source liquid
     liquid_alternative_source = "", -- Source version of flowing liquid
     liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
+    liquid_renewable = true, -- Can new liquid source be created by placing
+    two or more sources nearly?
     light_source = 0, -- Amount of light emitted by node
     damage_per_second = 0, -- If player is inside node, this damage is caused
     node_box = {type="regular"}, -- See "Node boxes"
@@ -1420,6 +1457,11 @@ Node definition (register_node)
 	on_metadata_inventory_take = func(pos, listname, index, stack, player),
 	^ Called after the actual action has happened, according to what was allowed.
 	^ No return value
+    
+	on_blast = func(pos, intensity),
+	^ intensity: 1.0 = mid range of regular TNT
+	^ If defined, called when an explosion touches the node, instead of
+	  removing the node
 }
 
 Recipe for register_craft: (shaped)

games/minimal/mods/default/init.lua

@@ -769,7 +769,7 @@ minetest.register_node("default:sand", {
 	description = "Sand",
 	tiles ={"default_sand.png"},
 	is_ground_content = true,
-	groups = {crumbly=3},
+	groups = {crumbly=3, falling_node=1},
 	sounds = default.node_sound_sand_defaults(),
 })
 
@@ -777,7 +777,7 @@ minetest.register_node("default:gravel", {
 	description = "Gravel",
 	tiles ={"default_gravel.png"},
 	is_ground_content = true,
-	groups = {crumbly=2},
+	groups = {crumbly=2, falling_node=1},
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name="default_gravel_footstep", gain=0.45},
 	}),
@@ -837,7 +837,7 @@ minetest.register_node("default:junglegrass", {
 	wield_image = "default_junglegrass.png",
 	paramtype = "light",
 	walkable = false,
-	groups = {snappy=3},
+	groups = {snappy=3,attached_node=1},
 	sounds = default.node_sound_leaves_defaults(),
 })
 
@@ -1106,7 +1106,7 @@ minetest.register_node("default:torch", {
 		wall_bottom = {-0.1, -0.5, -0.1, 0.1, -0.5+0.6, 0.1},
 		wall_side = {-0.5, -0.3, -0.1, -0.5+0.3, 0.3, 0.1},
 	},
-	groups = {choppy=2,dig_immediate=3},
+	groups = {choppy=2,dig_immediate=3,attached_node=1},
 	legacy_wallmounted = true,
 	sounds = default.node_sound_defaults(),
 })
@@ -1127,7 +1127,7 @@ minetest.register_node("default:sign_wall", {
 		--wall_bottom = <default>
 		--wall_side = <default>
 	},
-	groups = {choppy=2,dig_immediate=2},
+	groups = {choppy=2,dig_immediate=2,attached_node=1},
 	legacy_wallmounted = true,
 	sounds = default.node_sound_defaults(),
 	on_construct = function(pos)
@@ -1495,7 +1495,7 @@ minetest.register_node("default:sapling", {
 	wield_image = "default_sapling.png",
 	paramtype = "light",
 	walkable = false,
-	groups = {snappy=2,dig_immediate=3},
+	groups = {snappy=2,dig_immediate=3,attached_node=1},
 	sounds = default.node_sound_defaults(),
 })
 
@@ -1586,73 +1586,22 @@ minetest.register_alias("mapgen_stone_with_coal", "default:stone_with_coal")
 minetest.register_alias("mapgen_stone_with_iron", "default:stone_with_iron")
 minetest.register_alias("mapgen_mese", "default:mese")
 
---
--- Some common functions
---
-
-default.falling_node_names = {}
-
-function nodeupdate_single(p)
-	n = minetest.env:get_node(p)
-	if default.falling_node_names[n.name] ~= nil then
-		p_bottom = {x=p.x, y=p.y-1, z=p.z}
-		n_bottom = minetest.env:get_node(p_bottom)
-		if n_bottom.name == "air" then
-			minetest.env:remove_node(p)
-			minetest.env:add_entity(p, "default:falling_"..n.name)
-			nodeupdate(p)
-		end
-	end
+-- Support old code
+function default.spawn_falling_node(p, nodename)
+	spawn_falling_node(p, nodename)
 end
 
-function nodeupdate(p)
-	for x = -1,1 do
-	for y = -1,1 do
-	for z = -1,1 do
-		p2 = {x=p.x+x, y=p.y+y, z=p.z+z}
-		nodeupdate_single(p2)
-	end
-	end
-	end
-end
-
---
--- Falling stuff
---
-
+-- Horrible crap to support old code
+-- Don't use this and never do what this does, it's completely wrong!
+-- (More specifically, the client and the C++ code doesn't get the group)
 function default.register_falling_node(nodename, texture)
-	default.falling_node_names[nodename] = true
-	-- Override naming conventions for stuff like :default:falling_default:sand
-	minetest.register_entity(":default:falling_"..nodename, {
-		-- Static definition
-		physical = true,
-		collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
-		visual = "cube",
-		textures = {texture,texture,texture,texture,texture,texture},
-		-- State
-		-- Methods
-		on_step = function(self, dtime)
-			-- Set gravity
-			self.object:setacceleration({x=0, y=-10, z=0})
-			-- Turn to actual sand when collides to ground or just move
-			local pos = self.object:getpos()
-			local bcp = {x=pos.x, y=pos.y-0.7, z=pos.z} -- Position of bottom center point
-			local bcn = minetest.env:get_node(bcp)
-			if bcn.name ~= "air" then
-				-- Turn to a sand node
-				local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
-				minetest.env:add_node(np, {name=nodename})
-				self.object:remove()
-			else
-				-- Do nothing
-			end
-		end
-	})
+	minetest.log("error", debug.traceback())
+	minetest.log('error', "WARNING: default.register_falling_node is deprecated")
+	if minetest.registered_nodes[nodename] then
+		minetest.registered_nodes[nodename].groups.falling_node = 1
+	end
 end
 
-default.register_falling_node("default:sand", "default_sand.png")
-default.register_falling_node("default:gravel", "default_gravel.png")
-
 --
 -- Global callbacks
 --
@@ -1665,13 +1614,11 @@ minetest.register_globalstep(on_step)
 
 function on_placenode(p, node)
 	--print("on_placenode")
-	nodeupdate(p)
 end
 minetest.register_on_placenode(on_placenode)
 
 function on_dignode(p, node)
 	--print("on_dignode")
-	nodeupdate(p)
 end
 minetest.register_on_dignode(on_dignode)
 

minetest.conf.example

@@ -117,6 +117,9 @@
 #screenshot_path = .
 # Amount of view bobbing (0 = no view bobbing, 1.0 = normal, 2.0 = double)
 #view_bobbing_amount = 1.0
+# Anaglyph stereo
+#anaglyph = false
+#anaglyph_strength = 0.1
 # In-game chat console background color (R,G,B)
 #console_color = (0,0,0)
 # In-game chat console background alpha (opaqueness, between 0 and 255)
@@ -126,6 +129,17 @@
 #sound_volume = 0.7
 # Whether node texture animations should be desynchronized per MapBlock
 #desynchronize_mapblock_texture_animation = true
+# Texture filtering settings
+#mip_map = false
+#anisotropic_filter = false
+#bilinear_filter = false
+#trilinear_filter = false
+# Set to true to pre-generate all item visuals
+#preload_item_visuals = true
+# 0: disable shaders
+# (1: low level shaders; not implemented)
+# 2: enable high level shaders
+#enable_shaders = 2
 
 #
 # Server stuff
@@ -139,8 +153,8 @@
 #motd = Welcome to this awesome Minetest server!
 # Maximum number of players connected simultaneously
 #max_users = 100
-# Set to false to allow old clients to connect
-#strict_protocol_version_checking = true
+# Set to true to disallow old clients from connecting
+#strict_protocol_version_checking = false
 # Set to true to enable creative mode (unlimited inventory)
 #creative_mode = false
 # Enable players getting damage and dying
@@ -194,7 +208,12 @@
 # To reduce lag, block transfers are slowed down when a player is building something.
 # This determines how long they are slowed down after placing or removing a node.
 #full_block_send_enable_min_time_from_building = 2.0
-# Length of a server tick in dedicated server
-#dedicated_server_step = 0.05
+# Length of a server tick and the interval at which objects are generally updated over network
+#dedicated_server_step = 0.1
 # Can be set to true to disable shutting down on invalid world data
 #ignore_world_load_errors = false
+# Congestion control parameters
+# time in seconds, rate in ~500B packets
+#congestion_control_aim_rtt = 0.2
+#congestion_control_max_rate = 400
+#congestion_control_min_rate = 10

src/CMakeLists.txt

@@ -202,6 +202,8 @@ set(common_SRCS
 	sha1.cpp
 	base64.cpp
 	ban.cpp
+	clientserver.cpp
+	staticobject.cpp
 	util/serialize.cpp
 	util/directiontables.cpp
 	util/numeric.cpp
@@ -260,6 +262,7 @@ set(minetest_SRCS
 	client.cpp
 	filecache.cpp
 	tile.cpp
+	shader.cpp
 	game.cpp
 	main.cpp
 )

src/base64.h

@@ -1,5 +1,10 @@
+#ifndef BASE64_HEADER
+#define BASE64_HEADER
+
 #include <string>
 
 bool base64_is_valid(std::string const& s);
 std::string base64_encode(unsigned char const* , unsigned int len);
 std::string base64_decode(std::string const& s);
+
+#endif // BASE64_HEADER

src/camera.cpp

@@ -336,13 +336,13 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize,
 	if (m_digging_button != -1)
 	{
 		f32 digfrac = m_digging_anim;
-		wield_position.X -= 30 * sin(pow(digfrac, 0.8f) * M_PI);
-		wield_position.Y += 15 * sin(digfrac * 2 * M_PI);
-		wield_position.Z += 5 * digfrac;
-
+		wield_position.X -= 50 * sin(pow(digfrac, 0.8f) * M_PI);
+		wield_position.Y += 24 * sin(digfrac * 1.8 * M_PI);
+		wield_position.Z += 25 * 0.5;
+	
 		// Euler angles are PURE EVIL, so why not use quaternions?
 		core::quaternion quat_begin(wield_rotation * core::DEGTORAD);
-		core::quaternion quat_end(v3f(90, -10, -130) * core::DEGTORAD);
+		core::quaternion quat_end(v3f(80, 30, 100) * core::DEGTORAD);
 		core::quaternion quat_slerp;
 		quat_slerp.slerp(quat_begin, quat_end, sin(digfrac * M_PI));
 		quat_slerp.toEuler(wield_rotation);
@@ -529,7 +529,7 @@ void Camera::setDigging(s32 button)
 void Camera::wield(const ItemStack &item)
 {
 	IItemDefManager *idef = m_gamedef->idef();
-	scene::IMesh *wield_mesh = item.getDefinition(idef).wield_mesh;
+	scene::IMesh *wield_mesh = idef->getWieldMesh(item.getDefinition(idef).name, m_gamedef);
 	if(wield_mesh)
 	{
 		m_wieldnode->setMesh(wield_mesh);
@@ -544,7 +544,7 @@ void Camera::wield(const ItemStack &item)
 void Camera::drawWieldedTool()
 {
 	// Set vertex colors of wield mesh according to light level
-	u8 li = decode_light(m_wieldlight);
+	u8 li = m_wieldlight;
 	video::SColor color(255,li,li,li);
 	setMeshColor(m_wieldnode->getMesh(), color);
 

src/client.cpp

@@ -33,6 +33,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "nodemetadata.h"
 #include "nodedef.h"
 #include "itemdef.h"
+#include "shader.h"
 #include <IFileSystem.h>
 #include "sha1.h"
 #include "base64.h"
@@ -41,6 +42,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "sound.h"
 #include "util/string.h"
 #include "hex.h"
+#include "IMeshCache.h"
+#include "util/serialize.h"
 
 static std::string getMediaCacheDir()
 {
@@ -226,12 +229,14 @@ Client::Client(
 		std::string password,
 		MapDrawControl &control,
 		IWritableTextureSource *tsrc,
+		IWritableShaderSource *shsrc,
 		IWritableItemDefManager *itemdef,
 		IWritableNodeDefManager *nodedef,
 		ISoundManager *sound,
 		MtEventManager *event
 ):
 	m_tsrc(tsrc),
+	m_shsrc(shsrc),
 	m_itemdef(itemdef),
 	m_nodedef(nodedef),
 	m_sound(sound),
@@ -265,6 +270,7 @@ Client::Client(
 	m_time_of_day_set(false),
 	m_last_time_of_day_f(-1),
 	m_time_of_day_update_timer(0),
+	m_recommended_send_interval(0.1),
 	m_removed_sounds_check_timer(0)
 {
 	m_packetcounter_timer = 0.0;
@@ -498,8 +504,9 @@ void Client::step(float dtime)
 			// [2] u8 SER_FMT_VER_HIGHEST
 			// [3] u8[20] player_name
 			// [23] u8[28] password (new in some version)
-			// [51] u16 client network protocol version (new in some version)
-			SharedBuffer<u8> data(2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2);
+			// [51] u16 minimum supported network protocol version (added sometime)
+			// [53] u16 maximum supported network protocol version (added later than the previous one)
+			SharedBuffer<u8> data(2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2+2);
 			writeU16(&data[0], TOSERVER_INIT);
 			writeU8(&data[2], SER_FMT_VER_HIGHEST);
 
@@ -512,8 +519,8 @@ void Client::step(float dtime)
 			memset((char*)&data[23], 0, PASSWORD_SIZE);
 			snprintf((char*)&data[23], PASSWORD_SIZE, "%s", m_password.c_str());
 			
-			// This should be incremented in each version
-			writeU16(&data[51], PROTOCOL_VERSION);
+			writeU16(&data[51], CLIENT_PROTOCOL_VERSION_MIN);
+			writeU16(&data[53], CLIENT_PROTOCOL_VERSION_MAX);
 
 			// Send as unreliable
 			Send(0, data, false);
@@ -655,7 +662,7 @@ void Client::step(float dtime)
 	{
 		float &counter = m_playerpos_send_timer;
 		counter += dtime;
-		if(counter >= 0.2)
+		if(counter >= m_recommended_send_interval)
 		{
 			counter = 0.0;
 			sendPlayerPos();
@@ -821,7 +828,7 @@ bool Client::loadMedia(const std::string &data, const std::string &filename)
 	if(name != "")
 	{
 		verbosestream<<"Client: Attempting to load image "
-				<<"file \""<<filename<<"\""<<std::endl;
+		<<"file \""<<filename<<"\""<<std::endl;
 
 		io::IFileSystem *irrfs = m_device->getFileSystem();
 		video::IVideoDriver *vdrv = m_device->getVideoDriver();
@@ -855,11 +862,33 @@ bool Client::loadMedia(const std::string &data, const std::string &filename)
 	if(name != "")
 	{
 		verbosestream<<"Client: Attempting to load sound "
-				<<"file \""<<filename<<"\""<<std::endl;
+		<<"file \""<<filename<<"\""<<std::endl;
 		m_sound->loadSoundData(name, data);
 		return true;
 	}
 
+	const char *model_ext[] = {
+		".x", ".b3d", ".md2", ".obj",
+		NULL
+	};
+	name = removeStringEnd(filename, model_ext);
+	if(name != "")
+	{
+		verbosestream<<"Client: Storing model into Irrlicht: "
+				<<"\""<<filename<<"\""<<std::endl;
+
+		io::IFileSystem *irrfs = m_device->getFileSystem();
+		io::IReadFile *rfile = irrfs->createMemoryReadFile(
+				*data_rw, data_rw.getSize(), filename.c_str());
+		assert(rfile);
+		
+		scene::ISceneManager *smgr = m_device->getSceneManager();
+		scene::IAnimatedMesh *mesh = smgr->getMesh(rfile);
+		smgr->getMeshCache()->addMesh(filename.c_str(), mesh);
+		
+		return true;
+	}
+
 	errorstream<<"Client: Don't know how to load file \""
 			<<filename<<"\""<<std::endl;
 	return false;
@@ -997,6 +1026,14 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 			m_map_seed = readU64(&data[2+1+6]);
 			infostream<<"Client: received map seed: "<<m_map_seed<<std::endl;
 		}
+
+		if(datasize >= 2+1+6+8+4)
+		{
+			// Get map seed
+			m_recommended_send_interval = readF1000(&data[2+1+6+8]);
+			infostream<<"Client: received recommended send interval "
+					<<m_recommended_send_interval<<std::endl;
+		}
 		
 		// Reply to server
 		u32 replysize = 2;
@@ -1434,8 +1471,8 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 
 		int num_files = readU16(is);
 		
-		verbosestream<<"Client received TOCLIENT_ANNOUNCE_MEDIA ("
-				<<num_files<<" files)"<<std::endl;
+		infostream<<"Client: Received media announcement: packet size: "
+				<<datasize<<std::endl;
 
 		core::list<MediaRequest> file_requests;
 
@@ -1939,10 +1976,24 @@ void Client::sendPlayerPos()
 {
 	//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
 	
-	Player *myplayer = m_env.getLocalPlayer();
+	LocalPlayer *myplayer = m_env.getLocalPlayer();
 	if(myplayer == NULL)
 		return;
-	
+
+	// Save bandwidth by only updating position when something changed
+	if(myplayer->last_position == myplayer->getPosition() &&
+			myplayer->last_speed == myplayer->getSpeed() &&
+			myplayer->last_pitch == myplayer->getPitch() &&
+			myplayer->last_yaw == myplayer->getYaw() &&
+			myplayer->last_keyPressed == myplayer->keyPressed)
+		return;
+
+	myplayer->last_position = myplayer->getPosition();
+	myplayer->last_speed = myplayer->getSpeed();
+	myplayer->last_pitch = myplayer->getPitch();
+	myplayer->last_yaw = myplayer->getYaw();
+	myplayer->last_keyPressed = myplayer->keyPressed;
+
 	u16 our_peer_id;
 	{
 		//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
@@ -1961,7 +2012,7 @@ void Client::sendPlayerPos()
 	v3s32 speed(sf.X*100, sf.Y*100, sf.Z*100);
 	s32 pitch = myplayer->getPitch() * 100;
 	s32 yaw = myplayer->getYaw() * 100;
-
+	u32 keyPressed=myplayer->keyPressed;
 	/*
 		Format:
 		[0] u16 command
@@ -1969,15 +2020,15 @@ void Client::sendPlayerPos()
 		[2+12] v3s32 speed*100
 		[2+12+12] s32 pitch*100
 		[2+12+12+4] s32 yaw*100
+		[2+12+12+4+4] u32 keyPressed
 	*/
-
-	SharedBuffer<u8> data(2+12+12+4+4);
+	SharedBuffer<u8> data(2+12+12+4+4+4);
 	writeU16(&data[0], TOSERVER_PLAYERPOS);
 	writeV3S32(&data[2], position);
 	writeV3S32(&data[2+12], speed);
 	writeS32(&data[2+12+12], pitch);
-	writeS32(&data[2+12+12+4], yaw);
-
+	writeS32(&data[2+12+12+4], yaw);	
+	writeU32(&data[2+12+12+4+4], keyPressed);
 	// Send as unreliable
 	Send(0, data, false);
 }
@@ -2404,7 +2455,7 @@ ClientEvent Client::getClientEvent()
 
 void Client::afterContentReceived()
 {
-	verbosestream<<"Client::afterContentReceived() started"<<std::endl;
+	infostream<<"Client::afterContentReceived() started"<<std::endl;
 	assert(m_itemdef_received);
 	assert(m_nodedef_received);
 	assert(m_media_received);
@@ -2414,31 +2465,43 @@ void Client::afterContentReceived()
 	m_media_name_sha1_map.clear();
 
 	// Rebuild inherited images and recreate textures
-	verbosestream<<"Rebuilding images and textures"<<std::endl;
+	infostream<<"- Rebuilding images and textures"<<std::endl;
 	m_tsrc->rebuildImagesAndTextures();
 
 	// Update texture atlas
-	verbosestream<<"Updating texture atlas"<<std::endl;
+	infostream<<"- Updating texture atlas"<<std::endl;
 	if(g_settings->getBool("enable_texture_atlas"))
 		m_tsrc->buildMainAtlas(this);
 
+	// Rebuild shaders
+	m_shsrc->rebuildShaders();
+
 	// Update node aliases
-	verbosestream<<"Updating node aliases"<<std::endl;
+	infostream<<"- Updating node aliases"<<std::endl;
 	m_nodedef->updateAliases(m_itemdef);
 
 	// Update node textures
-	verbosestream<<"Updating node textures"<<std::endl;
+	infostream<<"- Updating node textures"<<std::endl;
 	m_nodedef->updateTextures(m_tsrc);
 
-	// Update item textures and meshes
-	verbosestream<<"Updating item textures and meshes"<<std::endl;
-	m_itemdef->updateTexturesAndMeshes(this);
+	// Preload item textures and meshes if configured to
+	if(g_settings->getBool("preload_item_visuals"))
+	{
+		verbosestream<<"Updating item textures and meshes"<<std::endl;
+		std::set<std::string> names = m_itemdef->getAll();
+		for(std::set<std::string>::const_iterator
+				i = names.begin(); i != names.end(); ++i){
+			// Asking for these caches the result
+			m_itemdef->getInventoryTexture(*i, this);
+			m_itemdef->getWieldMesh(*i, this);
+		}
+	}
 
 	// Start mesh update thread after setting up content definitions
-	verbosestream<<"Starting mesh update thread"<<std::endl;
+	infostream<<"- Starting mesh update thread"<<std::endl;
 	m_mesh_update_thread.Start();
 	
-	verbosestream<<"Client::afterContentReceived() done"<<std::endl;
+	infostream<<"Client::afterContentReceived() done"<<std::endl;
 }
 
 float Client::getRTT(void)
@@ -2469,6 +2532,10 @@ ITextureSource* Client::getTextureSource()
 {
 	return m_tsrc;
 }
+IShaderSource* Client::getShaderSource()
+{
+	return m_shsrc;
+}
 u16 Client::allocateUnknownNodeId(const std::string &name)
 {
 	errorstream<<"Client::allocateUnknownNodeId(): "

src/client.h

@@ -39,6 +39,7 @@ struct MeshMakeData;
 class MapBlockMesh;
 class IGameDef;
 class IWritableTextureSource;
+class IWritableShaderSource;
 class IWritableItemDefManager;
 class IWritableNodeDefManager;
 //class IWritableCraftDefManager;
@@ -174,6 +175,7 @@ class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 			std::string password,
 			MapDrawControl &control,
 			IWritableTextureSource *tsrc,
+			IWritableShaderSource *shsrc,
 			IWritableItemDefManager *itemdef,
 			IWritableNodeDefManager *nodedef,
 			ISoundManager *sound,
@@ -305,6 +307,7 @@ class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 	virtual INodeDefManager* getNodeDefManager();
 	virtual ICraftDefManager* getCraftDefManager();
 	virtual ITextureSource* getTextureSource();
+	virtual IShaderSource* getShaderSource();
 	virtual u16 allocateUnknownNodeId(const std::string &name);
 	virtual ISoundManager* getSoundManager();
 	virtual MtEventManager* getEventManager();
@@ -337,6 +340,7 @@ class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 	IntervalLimiter m_map_timer_and_unload_interval;
 
 	IWritableTextureSource *m_tsrc;
+	IWritableShaderSource *m_shsrc;
 	IWritableItemDefManager *m_itemdef;
 	IWritableNodeDefManager *m_nodedef;
 	ISoundManager *m_sound;
@@ -382,6 +386,9 @@ class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 	float m_last_time_of_day_f;
 	float m_time_of_day_update_timer;
 
+	// An interval for generally sending object positions and stuff
+	float m_recommended_send_interval;
+
 	// Sounds
 	float m_removed_sounds_check_timer;
 	// Mapping from server sound ids to our sound ids

src/clientmap.cpp

@@ -352,13 +352,17 @@ void ClientMap::updateDrawList(video::IVideoDriver* driver)
 		if(sector_blocks_drawn != 0)
 			m_last_drawn_sectors[sp] = true;
 	}
-	
+
+	m_control.blocks_would_have_drawn = blocks_would_have_drawn;
+	m_control.blocks_drawn = blocks_drawn;
+
 	g_profiler->avg("CM: blocks in range", blocks_in_range);
 	g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 	if(blocks_in_range != 0)
 		g_profiler->avg("CM: blocks in range without mesh (frac)",
 				(float)blocks_in_range_without_mesh/blocks_in_range);
 	g_profiler->avg("CM: blocks drawn", blocks_drawn);
+	g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 }
 
 struct MeshBufList
@@ -413,6 +417,10 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 		m_last_drawn_sectors.clear();
 	}
 
+	bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
+	bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
+	bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
+
 	/*
 		Get time for measuring timeout.
 		
@@ -463,9 +471,6 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 	u32 mesh_animate_count = 0;
 	u32 mesh_animate_count_far = 0;
 	
-	// Blocks that had mesh that would have been drawn according to
-	// rendering range (if max blocks limit didn't kick in)
-	u32 blocks_would_have_drawn = 0;
 	// Blocks that were drawn and had a mesh
 	u32 blocks_drawn = 0;
 	// Blocks which had a corresponding meshbuffer for this pass
@@ -544,6 +549,11 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 			for(u32 i=0; i<c; i++)
 			{
 				scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
+
+				buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+				buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+				buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
+
 				const video::SMaterial& material = buf->getMaterial();
 				video::IMaterialRenderer* rnd =
 						driver->getMaterialRenderer(material.MaterialType);
@@ -656,9 +666,6 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 		g_profiler->avg(prefix+"empty blocks (frac)",
 				(float)blocks_without_stuff / blocks_drawn);
 
-	m_control.blocks_drawn = blocks_drawn;
-	m_control.blocks_would_have_drawn = blocks_would_have_drawn;
-
 	/*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 			<<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 }

src/clientobject.cpp

@@ -36,7 +36,7 @@ ClientActiveObject::ClientActiveObject(u16 id, IGameDef *gamedef,
 
 ClientActiveObject::~ClientActiveObject()
 {
-	removeFromScene();
+	removeFromScene(true);
 }
 
 ClientActiveObject* ClientActiveObject::create(u8 type, IGameDef *gamedef,

src/clientobject.h

@@ -49,13 +49,19 @@ class ClientActiveObject : public ActiveObject
 
 	virtual void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
 			IrrlichtDevice *irr){}
-	virtual void removeFromScene(){}
+	virtual void removeFromScene(bool permanent){}
 	// 0 <= light_at_pos <= LIGHT_SUN
 	virtual void updateLight(u8 light_at_pos){}
 	virtual v3s16 getLightPosition(){return v3s16(0,0,0);}
 	virtual core::aabbox3d<f32>* getSelectionBox(){return NULL;}
 	virtual core::aabbox3d<f32>* getCollisionBox(){return NULL;}
 	virtual v3f getPosition(){return v3f(0,0,0);}
+	virtual scene::IMeshSceneNode *getMeshSceneNode(){return NULL;}
+	virtual scene::IAnimatedMeshSceneNode *getAnimatedMeshSceneNode(){return NULL;}
+	virtual scene::IBillboardSceneNode *getSpriteSceneNode(){return NULL;}
+	virtual bool isPlayer(){return false;}
+	virtual bool isLocalPlayer(){return false;}
+	virtual void setAttachments(){}
 	virtual bool doShowSelectionBox(){return true;}
 	
 	// Step object in time

src/clientserver.cpp

@@ -0,0 +1,31 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "clientserver.h"
+#include "util/serialize.h"
+
+SharedBuffer<u8> makePacket_TOCLIENT_TIME_OF_DAY(u16 time, float time_speed)
+{
+	SharedBuffer<u8> data(2+2+4);
+	writeU16(&data[0], TOCLIENT_TIME_OF_DAY);
+	writeU16(&data[2], time);
+	writeF1000(&data[4], time_speed);
+	return data;
+}
+

src/clientserver.h

@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
@@ -20,7 +20,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef CLIENTSERVER_HEADER
 #define CLIENTSERVER_HEADER
 
-#include "util/serialize.h"
+#include "util/pointer.h"
+
+SharedBuffer<u8> makePacket_TOCLIENT_TIME_OF_DAY(u16 time, float time_speed);
 
 /*
 	changes by PROTOCOL_VERSION:
@@ -67,10 +69,27 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 		TOCLIENT_DETACHED_INVENTORY
 	PROTOCOL_VERSION 13:
 		InventoryList field "Width" (deserialization fails with old versions)
+	PROTOCOL_VERSION 14:
+		Added transfer of player pressed keys to the server
+		Added new messages for mesh and bone animation, as well as attachments
+		GENERIC_CMD_SET_ANIMATION
+		GENERIC_CMD_SET_BONE_POSITION
+		GENERIC_CMD_SET_ATTACHMENT
+	PROTOCOL_VERSION 15:
+		Serialization format changes
 */
 
-#define PROTOCOL_VERSION 13
+#define LATEST_PROTOCOL_VERSION 15
 
+// Server's supported network protocol range
+#define SERVER_PROTOCOL_VERSION_MIN 13
+#define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
+
+// Client's supported network protocol range
+#define CLIENT_PROTOCOL_VERSION_MIN 13
+#define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
+
+// Constant that differentiates the protocol from random data and other protocols
 #define PROTOCOL_ID 0x4f457403
 
 #define PASSWORD_SIZE 28       // Maximum password length. Allows for
@@ -89,6 +108,7 @@ enum ToClientCommand
 		[2] u8 deployed version
 		[3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd 
 		[12] u64 map seed (new as of 2011-02-27)
+		[20] f1000 recommended send interval (in seconds) (new as of 14)
 
 		NOTE: The position in here is deprecated; position is
 		      explicitly sent afterwards
@@ -344,7 +364,8 @@ enum ToServerCommand
 		[2] u8 SER_FMT_VER_HIGHEST
 		[3] u8[20] player_name
 		[23] u8[28] password (new in some version)
-		[51] u16 client network protocol version (new in some version)
+		[51] u16 minimum supported network protocol version (added sometime)
+		[53] u16 maximum supported network protocol version (added later than the previous one)
 	*/
 
 	TOSERVER_INIT2 = 0x11,
@@ -366,6 +387,7 @@ enum ToServerCommand
 		[2+12] v3s32 speed*100
 		[2+12+12] s32 pitch*100
 		[2+12+12+4] s32 yaw*100
+		[2+12+12+4+4] u32 keyPressed
 	*/
 
 	TOSERVER_GOTBLOCKS = 0x24,
@@ -551,14 +573,5 @@ enum ToServerCommand
 
 };
 
-inline SharedBuffer<u8> makePacket_TOCLIENT_TIME_OF_DAY(u16 time, float time_speed)
-{
-	SharedBuffer<u8> data(2+2+4);
-	writeU16(&data[0], TOCLIENT_TIME_OF_DAY);
-	writeU16(&data[2], time);
-	writeF1000(&data[4], time_speed);
-	return data;
-}
-
 #endif
 

src/connection.cpp

@@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/serialize.h"
 #include "util/numeric.h"
 #include "util/string.h"
+#include "settings.h"
 
 namespace con
 {
@@ -466,7 +467,10 @@ Peer::Peer(u16 a_id, Address a_address):
 	m_sendtime_accu(0),
 	m_max_packets_per_second(10),
 	m_num_sent(0),
-	m_max_num_sent(0)
+	m_max_num_sent(0),
+	congestion_control_aim_rtt(0.2),
+	congestion_control_max_rate(400),
+	congestion_control_min_rate(10)
 {
 }
 Peer::~Peer()
@@ -477,15 +481,15 @@ void Peer::reportRTT(float rtt)
 {
 	if(rtt >= 0.0){
 		if(rtt < 0.01){
-			if(m_max_packets_per_second < 400)
+			if(m_max_packets_per_second < congestion_control_max_rate)
 				m_max_packets_per_second += 10;
-		} else if(rtt < 0.2){
-			if(m_max_packets_per_second < 100)
+		} else if(rtt < congestion_control_aim_rtt){
+			if(m_max_packets_per_second < congestion_control_max_rate)
 				m_max_packets_per_second += 2;
 		} else {
 			m_max_packets_per_second *= 0.8;
-			if(m_max_packets_per_second < 10)
-				m_max_packets_per_second = 10;
+			if(m_max_packets_per_second < congestion_control_min_rate)
+				m_max_packets_per_second = congestion_control_min_rate;
 		}
 	}
 
@@ -891,12 +895,24 @@ void Connection::receive()
 
 void Connection::runTimeouts(float dtime)
 {
+	float congestion_control_aim_rtt
+			= g_settings->getFloat("congestion_control_aim_rtt");
+	float congestion_control_max_rate
+			= g_settings->getFloat("congestion_control_max_rate");
+	float congestion_control_min_rate
+			= g_settings->getFloat("congestion_control_min_rate");
+
 	core::list<u16> timeouted_peers;
 	core::map<u16, Peer*>::Iterator j;
 	j = m_peers.getIterator();
 	for(; j.atEnd() == false; j++)
 	{
 		Peer *peer = j.getNode()->getValue();
+
+		// Update congestion control values
+		peer->congestion_control_aim_rtt = congestion_control_aim_rtt;
+		peer->congestion_control_max_rate = congestion_control_max_rate;
+		peer->congestion_control_min_rate = congestion_control_min_rate;
 		
 		/*
 			Check peer timeout

src/connection.h

@@ -394,7 +394,11 @@ class Peer
 	float m_max_packets_per_second;
 	int m_num_sent;
 	int m_max_num_sent;
-	
+
+	// Updated from configuration by Connection
+	float congestion_control_aim_rtt;
+	float congestion_control_max_rate;
+	float congestion_control_min_rate;
 private:
 };
 

src/content_cao.cpp

@@ -40,6 +40,10 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/serialize.h"
 #include "util/mathconstants.h"
 #include "map.h"
+#include "main.h" // g_settings
+#include <IMeshManipulator.h>
+#include <IAnimatedMeshSceneNode.h>
+#include <IBoneSceneNode.h>
 
 class Settings;
 struct ToolCapabilities;
@@ -468,7 +472,7 @@ void ItemCAO::updateTexture()
 		IItemDefManager *idef = m_gamedef->idef();
 		ItemStack item;
 		item.deSerialize(is, idef);
-		texture = item.getDefinition(idef).inventory_texture;
+		texture = idef->getInventoryTexture(item.getDefinition(idef).name, m_gamedef);
 	}
 	catch(SerializationError &e)
 	{
@@ -551,7 +555,8 @@ class GenericCAO : public ClientActiveObject
 	// Only set at initialization
 	std::string m_name;
 	bool m_is_player;
-	bool m_is_local_player; // determined locally
+	bool m_is_local_player;
+	int m_id;
 	// Property-ish things
 	ObjectProperties m_prop;
 	//
@@ -559,6 +564,7 @@ class GenericCAO : public ClientActiveObject
 	IrrlichtDevice *m_irr;
 	core::aabbox3d<f32> m_selection_box;
 	scene::IMeshSceneNode *m_meshnode;
+	scene::IAnimatedMeshSceneNode *m_animated_meshnode;
 	scene::IBillboardSceneNode *m_spritenode;
 	scene::ITextSceneNode* m_textnode;
 	v3f m_position;
@@ -572,6 +578,14 @@ class GenericCAO : public ClientActiveObject
 	v2s16 m_tx_basepos;
 	bool m_initial_tx_basepos_set;
 	bool m_tx_select_horiz_by_yawpitch;
+	v2f m_animation_range;
+	int m_animation_speed;
+	int m_animation_blend;
+	std::map<std::string, core::vector2d<v3f> > m_bone_position; // stores position and rotation for each bone name
+	std::string m_attachment_bone;
+	v3f m_attachment_position;
+	v3f m_attachment_rotation;
+	bool m_attached_to_local;
 	int m_anim_frame;
 	int m_anim_num_frames;
 	float m_anim_framelength;
@@ -581,6 +595,7 @@ class GenericCAO : public ClientActiveObject
 	bool m_visuals_expired;
 	float m_step_distance_counter;
 	u8 m_last_light;
+	bool m_is_visible;
 
 public:
 	GenericCAO(IGameDef *gamedef, ClientEnvironment *env):
@@ -588,11 +603,13 @@ class GenericCAO : public ClientActiveObject
 		//
 		m_is_player(false),
 		m_is_local_player(false),
+		m_id(0),
 		//
 		m_smgr(NULL),
 		m_irr(NULL),
 		m_selection_box(-BS/3.,-BS/3.,-BS/3., BS/3.,BS/3.,BS/3.),
 		m_meshnode(NULL),
+		m_animated_meshnode(NULL),
 		m_spritenode(NULL),
 		m_textnode(NULL),
 		m_position(v3f(0,10*BS,0)),
@@ -604,6 +621,14 @@ class GenericCAO : public ClientActiveObject
 		m_tx_basepos(0,0),
 		m_initial_tx_basepos_set(false),
 		m_tx_select_horiz_by_yawpitch(false),
+		m_animation_range(v2f(0,0)),
+		m_animation_speed(15),
+		m_animation_blend(0),
+		m_bone_position(std::map<std::string, core::vector2d<v3f> >()),
+		m_attachment_bone(""),
+		m_attachment_position(v3f(0,0,0)),
+		m_attachment_rotation(v3f(0,0,0)),
+		m_attached_to_local(false),
 		m_anim_frame(0),
 		m_anim_num_frames(1),
 		m_anim_framelength(0.2),
@@ -611,7 +636,8 @@ class GenericCAO : public ClientActiveObject
 		m_reset_textures_timer(-1),
 		m_visuals_expired(false),
 		m_step_distance_counter(0),
-		m_last_light(255)
+		m_last_light(255),
+		m_is_visible(false)
 	{
 		if(gamedef == NULL)
 			ClientActiveObject::registerType(getType(), create);
@@ -621,21 +647,36 @@ class GenericCAO : public ClientActiveObject
 	{
 		infostream<<"GenericCAO: Got init data"<<std::endl;
 		std::istringstream is(data, std::ios::binary);
+		int num_messages = 0;
 		// version
 		u8 version = readU8(is);
 		// check version
-		if(version != 0){
+		if(version == 1) // In PROTOCOL_VERSION 14
+		{
+			m_name = deSerializeString(is);
+			m_is_player = readU8(is);
+			m_id = readS16(is);
+			m_position = readV3F1000(is);
+			m_yaw = readF1000(is);
+			m_hp = readS16(is);
+			num_messages = readU8(is);
+		}
+		else if(version == 0) // In PROTOCOL_VERSION 13
+		{
+			m_name = deSerializeString(is);
+			m_is_player = readU8(is);
+			m_position = readV3F1000(is);
+			m_yaw = readF1000(is);
+			m_hp = readS16(is);
+			num_messages = readU8(is);
+		}
+		else
+		{
 			errorstream<<"GenericCAO: Unsupported init data version"
 					<<std::endl;
 			return;
 		}
-		m_name = deSerializeString(is);
-		m_is_player = readU8(is);
-		m_position = readV3F1000(is);
-		m_yaw = readF1000(is);
-		m_hp = readS16(is);
-		
-		int num_messages = readU8(is);
+
 		for(int i=0; i<num_messages; i++){
 			std::string message = deSerializeLongString(is);
 			processMessage(message);
@@ -667,21 +708,113 @@ class GenericCAO : public ClientActiveObject
 	}
 	core::aabbox3d<f32>* getSelectionBox()
 	{
-		if(!m_prop.is_visible || m_is_local_player)
+		if(!m_prop.is_visible || !m_is_visible || m_is_local_player || getParent() != NULL)
 			return NULL;
 		return &m_selection_box;
 	}
 	v3f getPosition()
 	{
+		if(getParent() != NULL){
+			if(m_meshnode)
+				return m_meshnode->getAbsolutePosition();
+			if(m_animated_meshnode)
+				return m_animated_meshnode->getAbsolutePosition();
+			if(m_spritenode)
+				return m_spritenode->getAbsolutePosition();
+			return m_position;
+		}
 		return pos_translator.vect_show;
 	}
 
-	void removeFromScene()
+	scene::IMeshSceneNode *getMeshSceneNode()
 	{
+		if(m_meshnode)
+			return m_meshnode;
+		return NULL;
+	}
+
+	scene::IAnimatedMeshSceneNode *getAnimatedMeshSceneNode()
+	{
+		if(m_animated_meshnode)
+			return m_animated_meshnode;
+		return NULL;
+	}
+
+	scene::IBillboardSceneNode *getSpriteSceneNode()
+	{
+		if(m_spritenode)
+			return m_spritenode;
+		return NULL;
+	}
+
+	bool isPlayer()
+	{
+		return m_is_player;
+	}
+
+	bool isLocalPlayer()
+	{
+		return m_is_local_player;
+	}
+
+	void setAttachments()
+	{
+		updateAttachments();
+	}
+
+	ClientActiveObject *getParent()
+	{
+		ClientActiveObject *obj = NULL;
+		for(std::vector<core::vector2d<int> >::const_iterator cii = m_env->attachment_list.begin(); cii != m_env->attachment_list.end(); cii++)
+		{
+			if(cii->X == getId()){ // This ID is our child
+				if(cii->Y > 0){ // A parent ID exists for our child
+					if(cii->X != cii->Y){ // The parent and child ID are not the same
+						obj = m_env->getActiveObject(cii->Y);
+					}
+				}
+				break;
+			}
+		}
+		if(obj)
+			return obj;
+		return NULL;
+	}
+
+	void removeFromScene(bool permanent)
+	{
+		if(permanent) // Should be true when removing the object permanently and false when refreshing (eg: updating visuals)
+		{
+			// Detach this object's children
+			for(std::vector<core::vector2d<int> >::iterator ii = m_env->attachment_list.begin(); ii != m_env->attachment_list.end(); ii++)
+			{
+				if(ii->Y == getId()) // Is a child of our object
+				{
+					ii->Y = 0;
+					ClientActiveObject *obj = m_env->getActiveObject(ii->X); // Get the object of the child
+					if(obj)
+						obj->setAttachments();
+				}
+			}
+			// Delete this object from the attachments list
+			for(std::vector<core::vector2d<int> >::iterator ii = m_env->attachment_list.begin(); ii != m_env->attachment_list.end(); ii++)
+			{
+				if(ii->X == getId()) // Is our object
+				{
+					m_env->attachment_list.erase(ii);
+					break;
+				}
+			}
+		}
+
 		if(m_meshnode){
 			m_meshnode->remove();
 			m_meshnode = NULL;
 		}
+		if(m_animated_meshnode){
+			m_animated_meshnode->remove();
+			m_animated_meshnode = NULL;
+		}
 		if(m_spritenode){
 			m_spritenode->remove();
 			m_spritenode = NULL;
@@ -694,7 +827,7 @@ class GenericCAO : public ClientActiveObject
 		m_smgr = smgr;
 		m_irr = irr;
 
-		if(m_meshnode != NULL || m_spritenode != NULL)
+		if(m_meshnode != NULL || m_animated_meshnode != NULL || m_spritenode != NULL)
 			return;
 		
 		m_visuals_expired = false;
@@ -790,15 +923,49 @@ class GenericCAO : public ClientActiveObject
 					m_prop.visual_size.X));
 			u8 li = m_last_light;
 			setMeshColor(m_meshnode->getMesh(), video::SColor(255,li,li,li));
-		} else if(m_prop.visual == "wielditem"){
+
+			m_meshnode->setMaterialFlag(video::EMF_LIGHTING, false);
+			m_meshnode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+			m_meshnode->setMaterialType(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF);
+			m_meshnode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+		}
+		else if(m_prop.visual == "mesh"){
+			infostream<<"GenericCAO::addToScene(): mesh"<<std::endl;
+			scene::IAnimatedMesh *mesh = smgr->getMesh(m_prop.mesh.c_str());
+			if(mesh)
+			{
+				m_animated_meshnode = smgr->addAnimatedMeshSceneNode(mesh, NULL);
+				m_animated_meshnode->animateJoints(); // Needed for some animations
+				m_animated_meshnode->setScale(v3f(m_prop.visual_size.X,
+						m_prop.visual_size.Y,
+						m_prop.visual_size.X));
+				u8 li = m_last_light;
+				setMeshColor(m_animated_meshnode->getMesh(), video::SColor(255,li,li,li));
+
+				m_animated_meshnode->setMaterialFlag(video::EMF_LIGHTING, false);
+				m_animated_meshnode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+				m_animated_meshnode->setMaterialType(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF);
+				m_animated_meshnode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+			}
+			else
+				errorstream<<"GenericCAO::addToScene(): Could not load mesh "<<m_prop.mesh<<std::endl;
+		}
+		else if(m_prop.visual == "wielditem"){
 			infostream<<"GenericCAO::addToScene(): node"<<std::endl;
 			infostream<<"textures: "<<m_prop.textures.size()<<std::endl;
 			if(m_prop.textures.size() >= 1){
 				infostream<<"textures[0]: "<<m_prop.textures[0]<<std::endl;
 				IItemDefManager *idef = m_gamedef->idef();
 				ItemStack item(m_prop.textures[0], 1, 0, "", idef);
-				scene::IMesh *mesh = item.getDefinition(idef).wield_mesh;
+				scene::IMesh *item_mesh = idef->getWieldMesh(item.getDefinition(idef).name, m_gamedef);
+				
+				// Copy mesh to be able to set unique vertex colors
+				scene::IMeshManipulator *manip =
+						irr->getVideoDriver()->getMeshManipulator();
+				scene::IMesh *mesh = manip->createMeshUniquePrimitives(item_mesh);
+
 				m_meshnode = smgr->addMeshSceneNode(mesh, NULL);
+				mesh->drop();
 				
 				m_meshnode->setScale(v3f(m_prop.visual_size.X/2,
 						m_prop.visual_size.Y/2,
@@ -815,6 +982,8 @@ class GenericCAO : public ClientActiveObject
 		scene::ISceneNode *node = NULL;
 		if(m_spritenode)
 			node = m_spritenode;
+		else if(m_animated_meshnode)
+			node = m_animated_meshnode;
 		else if(m_meshnode)
 			node = m_meshnode;
 		if(node && m_is_player && !m_is_local_player){
@@ -825,8 +994,11 @@ class GenericCAO : public ClientActiveObject
 					wname.c_str(), video::SColor(255,255,255,255), node);
 			m_textnode->setPosition(v3f(0, BS*1.1, 0));
 		}
-		
+
 		updateNodePos();
+		updateAnimation();
+		updateBonePosition();
+		updateAttachments();
 	}
 
 	void expireVisuals()
@@ -836,17 +1008,16 @@ class GenericCAO : public ClientActiveObject
 		
 	void updateLight(u8 light_at_pos)
 	{
-		bool is_visible = (m_hp != 0);
 		u8 li = decode_light(light_at_pos);
-		m_last_light = li;
-		video::SColor color(255,li,li,li);
-		if(m_meshnode){
-			setMeshColor(m_meshnode->getMesh(), color);
-			m_meshnode->setVisible(is_visible);
-		}
-		if(m_spritenode){
-			m_spritenode->setColor(color);
-			m_spritenode->setVisible(is_visible);
+		if(li != m_last_light){
+			m_last_light = li;
+			video::SColor color(255,li,li,li);
+			if(m_meshnode)
+				setMeshColor(m_meshnode->getMesh(), color);
+			if(m_animated_meshnode)
+				setMeshColor(m_animated_meshnode->getMesh(), color);
+			if(m_spritenode)
+				m_spritenode->setColor(color);
 		}
 	}
 
@@ -857,12 +1028,21 @@ class GenericCAO : public ClientActiveObject
 
 	void updateNodePos()
 	{
+		if(getParent() != NULL)
+			return;
+
 		if(m_meshnode){
 			m_meshnode->setPosition(pos_translator.vect_show);
 			v3f rot = m_meshnode->getRotation();
 			rot.Y = -m_yaw;
 			m_meshnode->setRotation(rot);
 		}
+		if(m_animated_meshnode){
+			m_animated_meshnode->setPosition(pos_translator.vect_show);
+			v3f rot = m_animated_meshnode->getRotation();
+			rot.Y = -m_yaw;
+			m_animated_meshnode->setRotation(rot);
+		}
 		if(m_spritenode){
 			m_spritenode->setPosition(pos_translator.vect_show);
 		}
@@ -870,56 +1050,116 @@ class GenericCAO : public ClientActiveObject
 
 	void step(float dtime, ClientEnvironment *env)
 	{
-		v3f lastpos = pos_translator.vect_show;
-
 		if(m_visuals_expired && m_smgr && m_irr){
 			m_visuals_expired = false;
-			removeFromScene();
+
+			// Attachments, part 1: All attached objects must be unparented first, or Irrlicht causes a segmentation fault
+			for(std::vector<core::vector2d<int> >::iterator ii = m_env->attachment_list.begin(); ii != m_env->attachment_list.end(); ii++)
+			{
+				if(ii->Y == getId()) // This is a child of our parent
+				{
+					ClientActiveObject *obj = m_env->getActiveObject(ii->X); // Get the object of the child
+					if(obj)
+					{
+						scene::IMeshSceneNode *m_child_meshnode = obj->getMeshSceneNode();
+						scene::IAnimatedMeshSceneNode *m_child_animated_meshnode = obj->getAnimatedMeshSceneNode();
+						scene::IBillboardSceneNode *m_child_spritenode = obj->getSpriteSceneNode();
+						if(m_child_meshnode)
+							m_child_meshnode->setParent(m_smgr->getRootSceneNode());
+						if(m_child_animated_meshnode)
+							m_child_animated_meshnode->setParent(m_smgr->getRootSceneNode());
+						if(m_child_spritenode)
+							m_child_spritenode->setParent(m_smgr->getRootSceneNode());
+					}
+				}
+			}
+
+			removeFromScene(false);
 			addToScene(m_smgr, m_gamedef->tsrc(), m_irr);
+
+			// Attachments, part 2: Now that the parent has been refreshed, put its attachments back
+			for(std::vector<core::vector2d<int> >::iterator ii = m_env->attachment_list.begin(); ii != m_env->attachment_list.end(); ii++)
+			{
+				if(ii->Y == getId()) // This is a child of our parent
+				{
+					ClientActiveObject *obj = m_env->getActiveObject(ii->X); // Get the object of the child
+					if(obj)
+						obj->setAttachments();
+				}
+			}
 		}
 
-		if(m_prop.physical){
-			core::aabbox3d<f32> box = m_prop.collisionbox;
-			box.MinEdge *= BS;
-			box.MaxEdge *= BS;
-			collisionMoveResult moveresult;
-			f32 pos_max_d = BS*0.125; // Distance per iteration
-			f32 stepheight = 0;
-			v3f p_pos = m_position;
-			v3f p_velocity = m_velocity;
-			v3f p_acceleration = m_acceleration;
-			IGameDef *gamedef = env->getGameDef();
-			moveresult = collisionMoveSimple(&env->getMap(), gamedef,
-					pos_max_d, box, stepheight, dtime,
-					p_pos, p_velocity, p_acceleration);
-			// Apply results
-			m_position = p_pos;
-			m_velocity = p_velocity;
-			m_acceleration = p_acceleration;
-			
-			bool is_end_position = moveresult.collides;
-			pos_translator.update(m_position, is_end_position, dtime);
-			pos_translator.translate(dtime);
-			updateNodePos();
-		} else {
-			m_position += dtime * m_velocity + 0.5 * dtime * dtime * m_acceleration;
-			m_velocity += dtime * m_acceleration;
-			pos_translator.update(m_position, pos_translator.aim_is_end, pos_translator.anim_time);
-			pos_translator.translate(dtime);
-			updateNodePos();
-		}
+		// Make sure m_is_visible is always applied
+		if(m_meshnode)
+			m_meshnode->setVisible(m_is_visible);
+		if(m_animated_meshnode)
+			m_animated_meshnode->setVisible(m_is_visible);
+		if(m_spritenode)
+			m_spritenode->setVisible(m_is_visible);
+		if(m_textnode)
+			m_textnode->setVisible(m_is_visible);
 
-		float moved = lastpos.getDistanceFrom(pos_translator.vect_show);
-		m_step_distance_counter += moved;
-		if(m_step_distance_counter > 1.5*BS){
-			m_step_distance_counter = 0;
-			if(!m_is_local_player && m_prop.makes_footstep_sound){
-				INodeDefManager *ndef = m_gamedef->ndef();
-				v3s16 p = floatToInt(getPosition() + v3f(0,
-						(m_prop.collisionbox.MinEdge.Y-0.5)*BS, 0), BS);
-				MapNode n = m_env->getMap().getNodeNoEx(p);
-				SimpleSoundSpec spec = ndef->get(n).sound_footstep;
-				m_gamedef->sound()->playSoundAt(spec, false, getPosition());
+		if(getParent() != NULL) // Attachments should be glued to their parent by Irrlicht
+		{
+			// Set these for later
+			m_position = getPosition();
+			m_velocity = v3f(0,0,0);
+			m_acceleration = v3f(0,0,0);
+			pos_translator.vect_show = m_position;
+
+			if(m_is_local_player) // Update local player attachment position
+			{
+				LocalPlayer *player = m_env->getLocalPlayer();
+				player->overridePosition = getParent()->getPosition();
+			}
+		}
+		else
+		{
+			v3f lastpos = pos_translator.vect_show;
+
+			if(m_prop.physical){
+				core::aabbox3d<f32> box = m_prop.collisionbox;
+				box.MinEdge *= BS;
+				box.MaxEdge *= BS;
+				collisionMoveResult moveresult;
+				f32 pos_max_d = BS*0.125; // Distance per iteration
+				f32 stepheight = 0;
+				v3f p_pos = m_position;
+				v3f p_velocity = m_velocity;
+				v3f p_acceleration = m_acceleration;
+				IGameDef *gamedef = env->getGameDef();
+				moveresult = collisionMoveSimple(&env->getMap(), gamedef,
+						pos_max_d, box, stepheight, dtime,
+						p_pos, p_velocity, p_acceleration);
+				// Apply results
+				m_position = p_pos;
+				m_velocity = p_velocity;
+				m_acceleration = p_acceleration;
+				
+				bool is_end_position = moveresult.collides;
+				pos_translator.update(m_position, is_end_position, dtime);
+				pos_translator.translate(dtime);
+				updateNodePos();
+			} else {
+				m_position += dtime * m_velocity + 0.5 * dtime * dtime * m_acceleration;
+				m_velocity += dtime * m_acceleration;
+				pos_translator.update(m_position, pos_translator.aim_is_end, pos_translator.anim_time);
+				pos_translator.translate(dtime);
+				updateNodePos();
+			}
+
+			float moved = lastpos.getDistanceFrom(pos_translator.vect_show);
+			m_step_distance_counter += moved;
+			if(m_step_distance_counter > 1.5*BS){
+				m_step_distance_counter = 0;
+				if(!m_is_local_player && m_prop.makes_footstep_sound){
+					INodeDefManager *ndef = m_gamedef->ndef();
+					v3s16 p = floatToInt(getPosition() + v3f(0,
+							(m_prop.collisionbox.MinEdge.Y-0.5)*BS, 0), BS);
+					MapNode n = m_env->getMap().getNodeNoEx(p);
+					SimpleSoundSpec spec = ndef->get(n).sound_footstep;
+					m_gamedef->sound()->playSoundAt(spec, false, getPosition());
+				}
 			}
 		}
 
@@ -940,7 +1180,7 @@ class GenericCAO : public ClientActiveObject
 				updateTextures("");
 			}
 		}
-		if(fabs(m_prop.automatic_rotate) > 0.001){
+		if(getParent() == NULL && fabs(m_prop.automatic_rotate) > 0.001){
 			m_yaw += dtime * m_prop.automatic_rotate * 180 / M_PI;
 			updateNodePos();
 		}
@@ -998,6 +1238,10 @@ class GenericCAO : public ClientActiveObject
 	{
 		ITextureSource *tsrc = m_gamedef->tsrc();
 
+		bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
+		bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
+		bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
+
 		if(m_spritenode)
 		{
 			if(m_prop.visual == "sprite")
@@ -1008,6 +1252,58 @@ class GenericCAO : public ClientActiveObject
 				texturestring += mod;
 				m_spritenode->setMaterialTexture(0,
 						tsrc->getTextureRaw(texturestring));
+
+				// This allows setting per-material colors. However, until a real lighting
+				// system is added, the code below will have no effect. Once MineTest
+				// has directional lighting, it should work automatically.
+				if(m_prop.colors.size() >= 1)
+				{
+					m_spritenode->getMaterial(0).AmbientColor = m_prop.colors[0];
+					m_spritenode->getMaterial(0).DiffuseColor = m_prop.colors[0];
+					m_spritenode->getMaterial(0).SpecularColor = m_prop.colors[0];
+				}
+
+				m_spritenode->getMaterial(0).setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+				m_spritenode->getMaterial(0).setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+				m_spritenode->getMaterial(0).setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
+			}
+		}
+		if(m_animated_meshnode)
+		{
+			if(m_prop.visual == "mesh")
+			{
+				for (u32 i = 0; i < m_prop.textures.size() && i < m_animated_meshnode->getMaterialCount(); ++i)
+				{
+					std::string texturestring = m_prop.textures[i];
+					if(texturestring == "")
+						continue; // Empty texture string means don't modify that material
+					texturestring += mod;
+					video::ITexture* texture = tsrc->getTextureRaw(texturestring);
+					if(!texture)
+					{
+						errorstream<<"GenericCAO::updateTextures(): Could not load texture "<<texturestring<<std::endl;
+						continue;
+					}
+
+					// Set material flags and texture
+					m_animated_meshnode->setMaterialTexture(i, texture);
+					video::SMaterial& material = m_animated_meshnode->getMaterial(i);
+					material.setFlag(video::EMF_LIGHTING, false);
+					material.setFlag(video::EMF_BILINEAR_FILTER, false);
+
+					m_animated_meshnode->getMaterial(i).setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+					m_animated_meshnode->getMaterial(i).setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+					m_animated_meshnode->getMaterial(i).setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
+				}
+				for (u32 i = 0; i < m_prop.colors.size() && i < m_animated_meshnode->getMaterialCount(); ++i)
+				{
+					// This allows setting per-material colors. However, until a real lighting
+					// system is added, the code below will have no effect. Once MineTest
+					// has directional lighting, it should work automatically.
+					m_animated_meshnode->getMaterial(i).AmbientColor = m_prop.colors[i];
+					m_animated_meshnode->getMaterial(i).DiffuseColor = m_prop.colors[i];
+					m_animated_meshnode->getMaterial(i).SpecularColor = m_prop.colors[i];
+				}
 			}
 		}
 		if(m_meshnode)
@@ -1034,6 +1330,20 @@ class GenericCAO : public ClientActiveObject
 					material.setTexture(0, atlas);
 					material.getTextureMatrix(0).setTextureTranslate(pos.X, pos.Y);
 					material.getTextureMatrix(0).setTextureScale(size.X, size.Y);
+
+					// This allows setting per-material colors. However, until a real lighting
+					// system is added, the code below will have no effect. Once MineTest
+					// has directional lighting, it should work automatically.
+					if(m_prop.colors.size() > i)
+					{
+						m_meshnode->getMaterial(i).AmbientColor = m_prop.colors[i];
+						m_meshnode->getMaterial(i).DiffuseColor = m_prop.colors[i];
+						m_meshnode->getMaterial(i).SpecularColor = m_prop.colors[i];
+					}
+
+					m_meshnode->getMaterial(i).setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+					m_meshnode->getMaterial(i).setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+					m_meshnode->getMaterial(i).setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 				}
 			}
 			else if(m_prop.visual == "upright_sprite")
@@ -1047,6 +1357,20 @@ class GenericCAO : public ClientActiveObject
 					scene::IMeshBuffer *buf = mesh->getMeshBuffer(0);
 					buf->getMaterial().setTexture(0,
 							tsrc->getTextureRaw(tname));
+					
+					// This allows setting per-material colors. However, until a real lighting
+					// system is added, the code below will have no effect. Once MineTest
+					// has directional lighting, it should work automatically.
+					if(m_prop.colors.size() >= 1)
+					{
+						buf->getMaterial().AmbientColor = m_prop.colors[0];
+						buf->getMaterial().DiffuseColor = m_prop.colors[0];
+						buf->getMaterial().SpecularColor = m_prop.colors[0];
+					}
+
+					buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+					buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+					buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 				}
 				{
 					std::string tname = "unknown_object.png";
@@ -1058,11 +1382,213 @@ class GenericCAO : public ClientActiveObject
 					scene::IMeshBuffer *buf = mesh->getMeshBuffer(1);
 					buf->getMaterial().setTexture(0,
 							tsrc->getTextureRaw(tname));
+
+					// This allows setting per-material colors. However, until a real lighting
+					// system is added, the code below will have no effect. Once MineTest
+					// has directional lighting, it should work automatically.
+					if(m_prop.colors.size() >= 2)
+					{
+						buf->getMaterial().AmbientColor = m_prop.colors[1];
+						buf->getMaterial().DiffuseColor = m_prop.colors[1];
+						buf->getMaterial().SpecularColor = m_prop.colors[1];
+					}
+					else if(m_prop.colors.size() >= 1)
+					{
+						buf->getMaterial().AmbientColor = m_prop.colors[0];
+						buf->getMaterial().DiffuseColor = m_prop.colors[0];
+						buf->getMaterial().SpecularColor = m_prop.colors[0];
+					}
+
+					buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
+					buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
+					buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 				}
 			}
 		}
 	}
 
+	void updateAnimation()
+	{
+		if(m_animated_meshnode == NULL)
+			return;
+
+		m_animated_meshnode->setFrameLoop((int)m_animation_range.X, (int)m_animation_range.Y);
+		m_animated_meshnode->setAnimationSpeed(m_animation_speed);
+		m_animated_meshnode->setTransitionTime(m_animation_blend);
+	}
+
+	void updateBonePosition()
+	{
+		if(!m_bone_position.size() || m_animated_meshnode == NULL)
+			return;
+
+		m_animated_meshnode->setJointMode(irr::scene::EJUOR_CONTROL); // To write positions to the mesh on render
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			std::string bone_name = (*ii).first;
+			v3f bone_pos = (*ii).second.X;
+			v3f bone_rot = (*ii).second.Y;
+			irr::scene::IBoneSceneNode* bone = m_animated_meshnode->getJointNode(bone_name.c_str());
+			if(bone)
+			{
+				bone->setPosition(bone_pos);
+				bone->setRotation(bone_rot);
+			}
+		}
+	}
+	
+	void updateAttachments()
+	{
+		m_attached_to_local = getParent() != NULL && getParent()->isLocalPlayer();
+		m_is_visible = !m_attached_to_local; // Objects attached to the local player should always be hidden
+
+		if(getParent() == NULL || m_attached_to_local) // Detach or don't attach
+		{
+			if(m_meshnode)
+			{
+				v3f old_position = m_meshnode->getAbsolutePosition();
+				v3f old_rotation = m_meshnode->getRotation();
+				m_meshnode->setParent(m_smgr->getRootSceneNode());
+				m_meshnode->setPosition(old_position);
+				m_meshnode->setRotation(old_rotation);
+				m_meshnode->updateAbsolutePosition();
+			}
+			if(m_animated_meshnode)
+			{
+				v3f old_position = m_animated_meshnode->getAbsolutePosition();
+				v3f old_rotation = m_animated_meshnode->getRotation();
+				m_animated_meshnode->setParent(m_smgr->getRootSceneNode());
+				m_animated_meshnode->setPosition(old_position);
+				m_animated_meshnode->setRotation(old_rotation);
+				m_animated_meshnode->updateAbsolutePosition();
+			}
+			if(m_spritenode)
+			{
+				v3f old_position = m_spritenode->getAbsolutePosition();
+				v3f old_rotation = m_spritenode->getRotation();
+				m_spritenode->setParent(m_smgr->getRootSceneNode());
+				m_spritenode->setPosition(old_position);
+				m_spritenode->setRotation(old_rotation);
+				m_spritenode->updateAbsolutePosition();
+			}
+			if(m_is_local_player)
+			{
+				LocalPlayer *player = m_env->getLocalPlayer();
+				player->isAttached = false;
+			}
+		}
+		else // Attach
+		{
+			scene::IMeshSceneNode *parent_mesh = NULL;
+			if(getParent()->getMeshSceneNode())
+				parent_mesh = getParent()->getMeshSceneNode();
+			scene::IAnimatedMeshSceneNode *parent_animated_mesh = NULL;
+			if(getParent()->getAnimatedMeshSceneNode())
+				parent_animated_mesh = getParent()->getAnimatedMeshSceneNode();
+			scene::IBillboardSceneNode *parent_sprite = NULL;
+			if(getParent()->getSpriteSceneNode())
+				parent_sprite = getParent()->getSpriteSceneNode();
+
+			scene::IBoneSceneNode *parent_bone = NULL;
+			if(parent_animated_mesh && m_attachment_bone != "")
+				parent_bone = parent_animated_mesh->getJointNode(m_attachment_bone.c_str());
+
+			// The spaghetti code below makes sure attaching works if either the parent or child is a spritenode, meshnode, or animatedmeshnode
+			// TODO: Perhaps use polymorphism here to save code duplication
+			if(m_meshnode){
+				if(parent_bone){
+					m_meshnode->setParent(parent_bone);
+					m_meshnode->setPosition(m_attachment_position);
+					m_meshnode->setRotation(m_attachment_rotation);
+					m_meshnode->updateAbsolutePosition();
+				}
+				else
+				{
+					if(parent_mesh){
+						m_meshnode->setParent(parent_mesh);
+						m_meshnode->setPosition(m_attachment_position);
+						m_meshnode->setRotation(m_attachment_rotation);
+						m_meshnode->updateAbsolutePosition();
+					}
+					else if(parent_animated_mesh){
+						m_meshnode->setParent(parent_animated_mesh);
+						m_meshnode->setPosition(m_attachment_position);
+						m_meshnode->setRotation(m_attachment_rotation);
+						m_meshnode->updateAbsolutePosition();
+					}
+					else if(parent_sprite){
+						m_meshnode->setParent(parent_sprite);
+						m_meshnode->setPosition(m_attachment_position);
+						m_meshnode->setRotation(m_attachment_rotation);
+						m_meshnode->updateAbsolutePosition();
+					}
+				}
+			}
+			if(m_animated_meshnode){
+				if(parent_bone){
+					m_animated_meshnode->setParent(parent_bone);
+					m_animated_meshnode->setPosition(m_attachment_position);
+					m_animated_meshnode->setRotation(m_attachment_rotation);
+					m_animated_meshnode->updateAbsolutePosition();
+				}
+				else
+				{
+					if(parent_mesh){
+						m_animated_meshnode->setParent(parent_mesh);
+						m_animated_meshnode->setPosition(m_attachment_position);
+						m_animated_meshnode->setRotation(m_attachment_rotation);
+						m_animated_meshnode->updateAbsolutePosition();
+					}
+					else if(parent_animated_mesh){
+						m_animated_meshnode->setParent(parent_animated_mesh);
+						m_animated_meshnode->setPosition(m_attachment_position);
+						m_animated_meshnode->setRotation(m_attachment_rotation);
+						m_animated_meshnode->updateAbsolutePosition();
+					}
+					else if(parent_sprite){
+						m_animated_meshnode->setParent(parent_sprite);
+						m_animated_meshnode->setPosition(m_attachment_position);
+						m_animated_meshnode->setRotation(m_attachment_rotation);
+						m_animated_meshnode->updateAbsolutePosition();
+					}
+				}
+			}
+			if(m_spritenode){
+				if(parent_bone){
+					m_spritenode->setParent(parent_bone);
+					m_spritenode->setPosition(m_attachment_position);
+					m_spritenode->setRotation(m_attachment_rotation);
+					m_spritenode->updateAbsolutePosition();
+				}
+				else
+				{
+					if(parent_mesh){
+						m_spritenode->setParent(parent_mesh);
+						m_spritenode->setPosition(m_attachment_position);
+						m_spritenode->setRotation(m_attachment_rotation);
+						m_spritenode->updateAbsolutePosition();
+					}
+					else if(parent_animated_mesh){
+						m_spritenode->setParent(parent_animated_mesh);
+						m_spritenode->setPosition(m_attachment_position);
+						m_spritenode->setRotation(m_attachment_rotation);
+						m_spritenode->updateAbsolutePosition();
+					}
+					else if(parent_sprite){
+						m_spritenode->setParent(parent_sprite);
+						m_spritenode->setPosition(m_attachment_position);
+						m_spritenode->setRotation(m_attachment_rotation);
+						m_spritenode->updateAbsolutePosition();
+					}
+				}
+			}
+			if(m_is_local_player)
+			{
+				LocalPlayer *player = m_env->getLocalPlayer();
+				player->isAttached = true;
+			}
+		}
+	}
+
 	void processMessage(const std::string &data)
 	{
 		//infostream<<"GenericCAO: Got message"<<std::endl;
@@ -1089,6 +1615,8 @@ class GenericCAO : public ClientActiveObject
 		}
 		else if(cmd == GENERIC_CMD_UPDATE_POSITION)
 		{
+			// Not sent by the server if this object is an attachment.
+			// We might however get here if the server notices the object being detached before the client.
 			m_position = readV3F1000(is);
 			m_velocity = readV3F1000(is);
 			m_acceleration = readV3F1000(is);
@@ -1102,7 +1630,10 @@ class GenericCAO : public ClientActiveObject
 			// the ground due to sucky collision detection...
 			if(m_prop.physical)
 				m_position += v3f(0,0.002,0);
-			
+
+			if(getParent() != NULL) // Just in case
+				return;
+
 			if(do_interpolate){
 				if(!m_prop.physical)
 					pos_translator.update(m_position, is_end_position, update_interval);
@@ -1130,6 +1661,41 @@ class GenericCAO : public ClientActiveObject
 
 			updateTexturePos();
 		}
+		else if(cmd == GENERIC_CMD_SET_ANIMATION)
+		{
+			m_animation_range = readV2F1000(is);
+			m_animation_speed = readF1000(is);
+			m_animation_blend = readF1000(is);
+
+			updateAnimation();
+		}
+		else if(cmd == GENERIC_CMD_SET_BONE_POSITION)
+		{
+			std::string bone = deSerializeString(is);
+			v3f position = readV3F1000(is);
+			v3f rotation = readV3F1000(is);
+			m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
+
+			updateBonePosition();
+		}
+		else if(cmd == GENERIC_CMD_SET_ATTACHMENT)
+		{
+			// If an entry already exists for this object, delete it first to avoid duplicates
+			for(std::vector<core::vector2d<int> >::iterator ii = m_env->attachment_list.begin(); ii != m_env->attachment_list.end(); ii++)
+			{
+				if(ii->X == getId()) // This is the ID of our object
+				{
+					m_env->attachment_list.erase(ii);
+					break;
+				}
+			}
+			m_env->attachment_list.push_back(core::vector2d<int>(getId(), readS16(is)));
+			m_attachment_bone = deSerializeString(is);
+			m_attachment_position = readV3F1000(is);
+			m_attachment_rotation = readV3F1000(is);
+
+			updateAttachments();
+		}
 		else if(cmd == GENERIC_CMD_PUNCHED)
 		{
 			/*s16 damage =*/ readS16(is);

src/content_mapblock.cpp

@@ -26,7 +26,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "tile.h"
 #include "gamedef.h"
 #include "util/numeric.h"
-#include "util/serialize.h"
 #include "util/directiontables.h"
 
 // Create a cuboid.
@@ -172,7 +171,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				continue;
 
 			u16 l = getInteriorLight(n, 0, data);
-			video::SColor c = MapBlock_LightColor(f.alpha, l);
+			video::SColor c = MapBlock_LightColor(f.alpha, l, decode_light(f.light_source));
 			
 			video::S3DVertex vertices[4] =
 			{
@@ -227,7 +226,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			// Otherwise use the light of this node (the liquid)
 			else
 				l = getInteriorLight(n, 0, data);
-			video::SColor c = MapBlock_LightColor(f.alpha, l);
+			video::SColor c = MapBlock_LightColor(f.alpha, l, decode_light(f.light_source));
 			
 			// Neighbor liquid levels (key = relative position)
 			// Includes current node
@@ -492,15 +491,15 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				// -Z towards +Z, thus the direction is +Z.
 				// Rotate texture to make animation go in flow direction
 				// Positive if liquid moves towards +Z
-				int dz = (corner_levels[side_corners[2][0]] +
-						corner_levels[side_corners[2][1]] <
-						corner_levels[side_corners[3][0]] +
-						corner_levels[side_corners[3][1]]);
+				int dz = (corner_levels[side_corners[3][0]] +
+						corner_levels[side_corners[3][1]]) -
+						(corner_levels[side_corners[2][0]] +
+						corner_levels[side_corners[2][1]]);
 				// Positive if liquid moves towards +X
-				int dx = (corner_levels[side_corners[0][0]] +
-						corner_levels[side_corners[0][1]] <
-						corner_levels[side_corners[1][0]] +
-						corner_levels[side_corners[1][1]]);
+				int dx = (corner_levels[side_corners[1][0]] +
+						corner_levels[side_corners[1][1]]) -
+						(corner_levels[side_corners[0][0]] +
+						corner_levels[side_corners[0][1]]);
 				// -X
 				if(-dx >= abs(dz))
 				{
@@ -545,7 +544,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			AtlasPointer ap = tile.texture;
 
 			u16 l = getInteriorLight(n, 1, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			for(u32 j=0; j<6; j++)
 			{
@@ -605,7 +604,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			AtlasPointer pa_leaves = tile_leaves.texture;
 
 			u16 l = getInteriorLight(n, 1, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			v3f pos = intToFloat(p, BS);
 			aabb3f box(-BS/2,-BS/2,-BS/2,BS/2,BS/2,BS/2);
@@ -639,7 +638,8 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 
 			AtlasPointer ap = tile.texture;
 
-			video::SColor c(255,255,255,255);
+			u16 l = getInteriorLight(n, 1, data);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			// Wall at X+ of node
 			video::S3DVertex vertices[4] =
@@ -684,7 +684,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			AtlasPointer ap = tile.texture;
 
 			u16 l = getInteriorLight(n, 0, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 				
 			float d = (float)BS/16;
 			// Wall at X+ of node
@@ -731,7 +731,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			AtlasPointer ap = tile.texture;
 			
 			u16 l = getInteriorLight(n, 1, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			for(u32 j=0; j<4; j++)
 			{
@@ -794,7 +794,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 					tile.texture.id) + "^[transformR90");
 					
 			u16 l = getInteriorLight(n, 1, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			const f32 post_rad=(f32)BS/8;
 			const f32 bar_rad=(f32)BS/16;
@@ -997,7 +997,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			AtlasPointer ap = tile.texture;
 			
 			u16 l = getInteriorLight(n, 0, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			float d = (float)BS/64;
 			
@@ -1046,7 +1046,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			}
 
 			u16 l = getInteriorLight(n, 0, data);
-			video::SColor c = MapBlock_LightColor(255, l);
+			video::SColor c = MapBlock_LightColor(255, l, decode_light(f.light_source));
 
 			v3f pos = intToFloat(p, BS);
 

src/content_sao.cpp

@@ -245,7 +245,7 @@ class ItemSAO : public ServerActiveObject
 		}
 	}
 
-	std::string getClientInitializationData()
+	std::string getClientInitializationData(u16 protocol_version)
 	{
 		std::ostringstream os(std::ios::binary);
 		// version
@@ -355,7 +355,10 @@ LuaEntitySAO::LuaEntitySAO(ServerEnvironment *env, v3f pos,
 	m_last_sent_velocity(0,0,0),
 	m_last_sent_position_timer(0),
 	m_last_sent_move_precision(0),
-	m_armor_groups_sent(false)
+	m_armor_groups_sent(false),
+	m_animation_sent(false),
+	m_bone_position_sent(false),
+	m_attachment_sent(false)
 {
 	// Only register type if no environment supplied
 	if(env == NULL){
@@ -376,9 +379,9 @@ LuaEntitySAO::~LuaEntitySAO()
 	}
 }
 
-void LuaEntitySAO::addedToEnvironment()
+void LuaEntitySAO::addedToEnvironment(u32 dtime_s)
 {
-	ServerActiveObject::addedToEnvironment();
+	ServerActiveObject::addedToEnvironment(dtime_s);
 	
 	// Create entity from name
 	lua_State *L = m_env->getLua();
@@ -390,7 +393,7 @@ void LuaEntitySAO::addedToEnvironment()
 		// Initialize HP from properties
 		m_hp = m_prop.hp_max;
 		// Activate entity, supplying serialized state
-		scriptapi_luaentity_activate(L, m_id, m_init_state.c_str());
+		scriptapi_luaentity_activate(L, m_id, m_init_state.c_str(), dtime_s);
 	}
 }
 
@@ -429,6 +432,17 @@ ServerActiveObject* LuaEntitySAO::create(ServerEnvironment *env, v3f pos,
 	return sao;
 }
 
+bool LuaEntitySAO::isAttached()
+{
+	if(!m_attachment_parent_id)
+		return false;
+	// Check if the parent still exists
+	ServerActiveObject *obj = m_env->getActiveObject(m_attachment_parent_id);
+	if(obj)
+		return true;
+	return false;
+}
+
 void LuaEntitySAO::step(float dtime, bool send_recommended)
 {
 	if(!m_properties_sent)
@@ -440,30 +454,52 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 		m_messages_out.push_back(aom);
 	}
 
+	// If attached, check that our parent is still there. If it isn't, detach.
+	if(m_attachment_parent_id && !isAttached())
+	{
+		m_attachment_parent_id = 0;
+		m_attachment_bone = "";
+		m_attachment_position = v3f(0,0,0);
+		m_attachment_rotation = v3f(0,0,0);
+		sendPosition(false, true);
+	}
+
 	m_last_sent_position_timer += dtime;
-	
-	if(m_prop.physical){
-		core::aabbox3d<f32> box = m_prop.collisionbox;
-		box.MinEdge *= BS;
-		box.MaxEdge *= BS;
-		collisionMoveResult moveresult;
-		f32 pos_max_d = BS*0.25; // Distance per iteration
-		f32 stepheight = 0; // Maximum climbable step height
-		v3f p_pos = m_base_position;
-		v3f p_velocity = m_velocity;
-		v3f p_acceleration = m_acceleration;
-		IGameDef *gamedef = m_env->getGameDef();
-		moveresult = collisionMoveSimple(&m_env->getMap(), gamedef,
-				pos_max_d, box, stepheight, dtime,
-				p_pos, p_velocity, p_acceleration);
-		// Apply results
-		m_base_position = p_pos;
-		m_velocity = p_velocity;
-		m_acceleration = p_acceleration;
-	} else {
-		m_base_position += dtime * m_velocity + 0.5 * dtime
-				* dtime * m_acceleration;
-		m_velocity += dtime * m_acceleration;
+
+	// Each frame, parent position is copied if the object is attached, otherwise it's calculated normally
+	// If the object gets detached this comes into effect automatically from the last known origin
+	if(isAttached())
+	{
+		v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
+		m_base_position = pos;
+		m_velocity = v3f(0,0,0);
+		m_acceleration = v3f(0,0,0);
+	}
+	else
+	{
+		if(m_prop.physical){
+			core::aabbox3d<f32> box = m_prop.collisionbox;
+			box.MinEdge *= BS;
+			box.MaxEdge *= BS;
+			collisionMoveResult moveresult;
+			f32 pos_max_d = BS*0.25; // Distance per iteration
+			f32 stepheight = 0; // Maximum climbable step height
+			v3f p_pos = m_base_position;
+			v3f p_velocity = m_velocity;
+			v3f p_acceleration = m_acceleration;
+			IGameDef *gamedef = m_env->getGameDef();
+			moveresult = collisionMoveSimple(&m_env->getMap(), gamedef,
+					pos_max_d, box, stepheight, dtime,
+					p_pos, p_velocity, p_acceleration);
+			// Apply results
+			m_base_position = p_pos;
+			m_velocity = p_velocity;
+			m_acceleration = p_acceleration;
+		} else {
+			m_base_position += dtime * m_velocity + 0.5 * dtime
+					* dtime * m_acceleration;
+			m_velocity += dtime * m_acceleration;
+		}
 	}
 
 	if(m_registered){
@@ -473,20 +509,23 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 
 	if(send_recommended == false)
 		return;
-	
-	// TODO: force send when acceleration changes enough?
-	float minchange = 0.2*BS;
-	if(m_last_sent_position_timer > 1.0){
-		minchange = 0.01*BS;
-	} else if(m_last_sent_position_timer > 0.2){
-		minchange = 0.05*BS;
-	}
-	float move_d = m_base_position.getDistanceFrom(m_last_sent_position);
-	move_d += m_last_sent_move_precision;
-	float vel_d = m_velocity.getDistanceFrom(m_last_sent_velocity);
-	if(move_d > minchange || vel_d > minchange ||
-			fabs(m_yaw - m_last_sent_yaw) > 1.0){
-		sendPosition(true, false);
+
+	if(!isAttached())
+	{
+		// TODO: force send when acceleration changes enough?
+		float minchange = 0.2*BS;
+		if(m_last_sent_position_timer > 1.0){
+			minchange = 0.01*BS;
+		} else if(m_last_sent_position_timer > 0.2){
+			minchange = 0.05*BS;
+		}
+		float move_d = m_base_position.getDistanceFrom(m_last_sent_position);
+		move_d += m_last_sent_move_precision;
+		float vel_d = m_velocity.getDistanceFrom(m_last_sent_velocity);
+		if(move_d > minchange || vel_d > minchange ||
+				fabs(m_yaw - m_last_sent_yaw) > 1.0){
+			sendPosition(true, false);
+		}
 	}
 
 	if(m_armor_groups_sent == false){
@@ -497,20 +536,70 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 		ActiveObjectMessage aom(getId(), true, str);
 		m_messages_out.push_back(aom);
 	}
+
+	if(m_animation_sent == false){
+		m_animation_sent = true;
+		std::string str = gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), true, str);
+		m_messages_out.push_back(aom);
+	}
+
+	if(m_bone_position_sent == false){
+		m_bone_position_sent = true;
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			std::string str = gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y);
+			// create message and add to list
+			ActiveObjectMessage aom(getId(), true, str);
+			m_messages_out.push_back(aom);
+		}
+	}
+
+	if(m_attachment_sent == false){
+		m_attachment_sent = true;
+		std::string str = gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), true, str);
+		m_messages_out.push_back(aom);
+	}
 }
 
-std::string LuaEntitySAO::getClientInitializationData()
+std::string LuaEntitySAO::getClientInitializationData(u16 protocol_version)
 {
 	std::ostringstream os(std::ios::binary);
-	writeU8(os, 0); // version
-	os<<serializeString(""); // name
-	writeU8(os, 0); // is_player
-	writeV3F1000(os, m_base_position);
-	writeF1000(os, m_yaw);
-	writeS16(os, m_hp);
-	writeU8(os, 2); // number of messages stuffed in here
-	os<<serializeLongString(getPropertyPacket()); // message 1
-	os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+
+	if(protocol_version >= 14)
+	{
+		writeU8(os, 1); // version
+		os<<serializeString(""); // name
+		writeU8(os, 0); // is_player
+		writeS16(os, getId()); //id
+		writeV3F1000(os, m_base_position);
+		writeF1000(os, m_yaw);
+		writeS16(os, m_hp);
+
+		writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+		os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+		}
+		os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
+	}
+	else
+	{
+		writeU8(os, 0); // version
+		os<<serializeString(""); // name
+		writeU8(os, 0); // is_player
+		writeV3F1000(os, m_base_position);
+		writeF1000(os, m_yaw);
+		writeS16(os, m_hp);
+		writeU8(os, 2); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+	}
+
 	// return result
 	return os.str();
 }
@@ -550,6 +639,10 @@ int LuaEntitySAO::punch(v3f dir,
 		m_removed = true;
 		return 0;
 	}
+
+	// It's best that attachments cannot be punched 
+	if(isAttached())
+		return 0;
 	
 	ItemStack *punchitem = NULL;
 	ItemStack punchitem_static;
@@ -594,18 +687,25 @@ void LuaEntitySAO::rightClick(ServerActiveObject *clicker)
 {
 	if(!m_registered)
 		return;
+	// It's best that attachments cannot be clicked
+	if(isAttached())
+		return;
 	lua_State *L = m_env->getLua();
 	scriptapi_luaentity_rightclick(L, m_id, clicker);
 }
 
 void LuaEntitySAO::setPos(v3f pos)
 {
+	if(isAttached())
+		return;
 	m_base_position = pos;
 	sendPosition(false, true);
 }
 
 void LuaEntitySAO::moveTo(v3f pos, bool continuous)
 {
+	if(isAttached())
+		return;
 	m_base_position = pos;
 	if(!continuous)
 		sendPosition(true, true);
@@ -644,6 +744,37 @@ void LuaEntitySAO::setArmorGroups(const ItemGroupList &armor_groups)
 	m_armor_groups_sent = false;
 }
 
+void LuaEntitySAO::setAnimation(v2f frame_range, float frame_speed, float frame_blend)
+{
+	m_animation_range = frame_range;
+	m_animation_speed = frame_speed;
+	m_animation_blend = frame_blend;
+	m_animation_sent = false;
+}
+
+void LuaEntitySAO::setBonePosition(std::string bone, v3f position, v3f rotation)
+{
+	m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
+	m_bone_position_sent = false;
+}
+
+void LuaEntitySAO::setAttachment(int parent_id, std::string bone, v3f position, v3f rotation)
+{
+	// Attachments need to be handled on both the server and client.
+	// If we just attach on the server, we can only copy the position of the parent. Attachments
+	// are still sent to clients at an interval so players might see them lagging, plus we can't
+	// read and attach to skeletal bones.
+	// If we just attach on the client, the server still sees the child at its original location.
+	// This breaks some things so we also give the server the most accurate representation
+	// even if players only see the client changes.
+
+	m_attachment_parent_id = parent_id;
+	m_attachment_bone = bone;
+	m_attachment_position = position;
+	m_attachment_rotation = rotation;
+	m_attachment_sent = false;
+}
+
 ObjectProperties* LuaEntitySAO::accessObjectProperties()
 {
 	return &m_prop;
@@ -718,6 +849,10 @@ std::string LuaEntitySAO::getPropertyPacket()
 
 void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
 {
+	// If the object is attached client-side, don't waste bandwidth sending its position to clients
+	if(isAttached())
+		return;
+	
 	m_last_sent_move_precision = m_base_position.getDistanceFrom(
 			m_last_sent_position);
 	m_last_sent_position_timer = 0;
@@ -765,8 +900,11 @@ PlayerSAO::PlayerSAO(ServerEnvironment *env_, Player *player_, u16 peer_id_,
 	m_properties_sent(true),
 	m_privs(privs),
 	m_is_singleplayer(is_singleplayer),
+	m_animation_sent(false),
+	m_bone_position_sent(false),
+	m_attachment_sent(false),
 	// public
-	m_teleported(false),
+	m_moved(false),
 	m_inventory_not_sent(false),
 	m_hp_not_sent(false),
 	m_wielded_item_not_sent(false)
@@ -782,13 +920,17 @@ PlayerSAO::PlayerSAO(ServerEnvironment *env_, Player *player_, u16 peer_id_,
 	m_prop.physical = false;
 	m_prop.weight = 75;
 	m_prop.collisionbox = core::aabbox3d<f32>(-1/3.,-1.0,-1/3., 1/3.,1.0,1/3.);
+	// start of default appearance, this should be overwritten by LUA
 	m_prop.visual = "upright_sprite";
 	m_prop.visual_size = v2f(1, 2);
 	m_prop.textures.clear();
 	m_prop.textures.push_back("player.png");
 	m_prop.textures.push_back("player_back.png");
+	m_prop.colors.clear();
+	m_prop.colors.push_back(video::SColor(255, 255, 255, 255));
 	m_prop.spritediv = v2s16(1,1);
-	m_prop.is_visible = (getHP() != 0);
+	// end of default appearance
+	m_prop.is_visible = true;
 	m_prop.makes_footstep_sound = true;
 }
 
@@ -805,9 +947,9 @@ std::string PlayerSAO::getDescription()
 }
 
 // Called after id has been set and has been inserted in environment
-void PlayerSAO::addedToEnvironment()
+void PlayerSAO::addedToEnvironment(u32 dtime_s)
 {
-	ServerActiveObject::addedToEnvironment();
+	ServerActiveObject::addedToEnvironment(dtime_s);
 	ServerActiveObject::setBasePosition(m_player->getPosition());
 	m_player->setPlayerSAO(this);
 	m_player->peer_id = m_peer_id;
@@ -836,18 +978,43 @@ bool PlayerSAO::unlimitedTransferDistance() const
 	return g_settings->getBool("unlimited_player_transfer_distance");
 }
 
-std::string PlayerSAO::getClientInitializationData()
+std::string PlayerSAO::getClientInitializationData(u16 protocol_version)
 {
 	std::ostringstream os(std::ios::binary);
-	writeU8(os, 0); // version
-	os<<serializeString(m_player->getName()); // name
-	writeU8(os, 1); // is_player
-	writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
-	writeF1000(os, m_player->getYaw());
-	writeS16(os, getHP());
-	writeU8(os, 2); // number of messages stuffed in here
-	os<<serializeLongString(getPropertyPacket()); // message 1
-	os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+
+	if(protocol_version >= 15)
+	{
+		writeU8(os, 1); // version
+		os<<serializeString(m_player->getName()); // name
+		writeU8(os, 1); // is_player
+		writeS16(os, getId()); //id
+		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
+		writeF1000(os, m_player->getYaw());
+		writeS16(os, getHP());
+
+		writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+		os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+		}
+		os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
+	}
+	else
+	{
+		writeU8(os, 0); // version
+		os<<serializeString(m_player->getName()); // name
+		writeU8(os, 1); // is_player
+		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
+		writeF1000(os, m_player->getYaw());
+		writeS16(os, getHP());
+		writeU8(os, 2); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+	}
+
+	// return result
 	return os.str();
 }
 
@@ -857,6 +1024,17 @@ std::string PlayerSAO::getStaticData()
 	return "";
 }
 
+bool PlayerSAO::isAttached()
+{
+	if(!m_attachment_parent_id)
+		return false;
+	// Check if the parent still exists
+	ServerActiveObject *obj = m_env->getActiveObject(m_attachment_parent_id);
+	if(obj)
+		return true;
+	return false;
+}
+
 void PlayerSAO::step(float dtime, bool send_recommended)
 {
 	if(!m_properties_sent)
@@ -868,73 +1046,102 @@ void PlayerSAO::step(float dtime, bool send_recommended)
 		m_messages_out.push_back(aom);
 	}
 
+	// If attached, check that our parent is still there. If it isn't, detach.
+	if(m_attachment_parent_id && !isAttached())
+	{
+		m_attachment_parent_id = 0;
+		m_attachment_bone = "";
+		m_attachment_position = v3f(0,0,0);
+		m_attachment_rotation = v3f(0,0,0);
+		m_player->setPosition(m_last_good_position);
+		m_moved = true;
+	}
+
 	m_time_from_last_punch += dtime;
 	m_nocheat_dig_time += dtime;
-	
-	if(m_is_singleplayer || g_settings->getBool("disable_anticheat"))
+
+	// Each frame, parent position is copied if the object is attached, otherwise it's calculated normally
+	// If the object gets detached this comes into effect automatically from the last known origin
+	if(isAttached())
 	{
-		m_last_good_position = m_player->getPosition();
+		v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
+		m_last_good_position = pos;
 		m_last_good_position_age = 0;
+		m_player->setPosition(pos);
 	}
 	else
 	{
-		/*
-			Check player movements
-
-			NOTE: Actually the server should handle player physics like the
-			client does and compare player's position to what is calculated
-			on our side. This is required when eg. players fly due to an
-			explosion. Altough a node-based alternative might be possible
-			too, and much more lightweight.
-		*/
-
-		float player_max_speed = 0;
-		float player_max_speed_up = 0;
-		if(m_privs.count("fast") != 0){
-			// Fast speed
-			player_max_speed = BS * 20;
-			player_max_speed_up = BS * 20;
-		} else {
-			// Normal speed
-			player_max_speed = BS * 4.0;
-			player_max_speed_up = BS * 4.0;
-		}
-		// Tolerance
-		player_max_speed *= 2.5;
-		player_max_speed_up *= 2.5;
-
-		m_last_good_position_age += dtime;
-		if(m_last_good_position_age >= 1.0){
-			float age = m_last_good_position_age;
-			v3f diff = (m_player->getPosition() - m_last_good_position);
-			float d_vert = diff.Y;
-			diff.Y = 0;
-			float d_horiz = diff.getLength();
-			/*infostream<<m_player->getName()<<"'s horizontal speed is "
-					<<(d_horiz/age)<<std::endl;*/
-			if(d_horiz <= age * player_max_speed &&
-					(d_vert < 0 || d_vert < age * player_max_speed_up)){
-				m_last_good_position = m_player->getPosition();
-			} else {
-				actionstream<<"Player "<<m_player->getName()
-						<<" moved too fast; resetting position"
-						<<std::endl;
-				m_player->setPosition(m_last_good_position);
-				m_teleported = true;
-			}
+		if(m_is_singleplayer || g_settings->getBool("disable_anticheat"))
+		{
+			m_last_good_position = m_player->getPosition();
 			m_last_good_position_age = 0;
 		}
+		else
+		{
+			/*
+				Check player movements
+
+				NOTE: Actually the server should handle player physics like the
+				client does and compare player's position to what is calculated
+				on our side. This is required when eg. players fly due to an
+				explosion. Altough a node-based alternative might be possible
+				too, and much more lightweight.
+			*/
+
+			float player_max_speed = 0;
+			float player_max_speed_up = 0;
+			if(m_privs.count("fast") != 0){
+				// Fast speed
+				player_max_speed = BS * 20;
+				player_max_speed_up = BS * 20;
+			} else {
+				// Normal speed
+				player_max_speed = BS * 4.0;
+				player_max_speed_up = BS * 4.0;
+			}
+			// Tolerance
+			player_max_speed *= 2.5;
+			player_max_speed_up *= 2.5;
+
+			m_last_good_position_age += dtime;
+			if(m_last_good_position_age >= 1.0){
+				float age = m_last_good_position_age;
+				v3f diff = (m_player->getPosition() - m_last_good_position);
+				float d_vert = diff.Y;
+				diff.Y = 0;
+				float d_horiz = diff.getLength();
+				/*infostream<<m_player->getName()<<"'s horizontal speed is "
+						<<(d_horiz/age)<<std::endl;*/
+				if(d_horiz <= age * player_max_speed &&
+						(d_vert < 0 || d_vert < age * player_max_speed_up)){
+					m_last_good_position = m_player->getPosition();
+				} else {
+					actionstream<<"Player "<<m_player->getName()
+							<<" moved too fast; resetting position"
+							<<std::endl;
+					m_player->setPosition(m_last_good_position);
+					m_moved = true;
+				}
+				m_last_good_position_age = 0;
+			}
+		}
 	}
 
 	if(send_recommended == false)
 		return;
 
-	if(m_position_not_sent)
+	// If the object is attached client-side, don't waste bandwidth sending its position to clients
+	if(m_position_not_sent && !isAttached())
 	{
 		m_position_not_sent = false;
 		float update_interval = m_env->getSendRecommendedInterval();
+		v3f pos;
+		if(isAttached()) // Just in case we ever do send attachment position too
+			pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
+		else
+			pos = m_player->getPosition() + v3f(0,BS*1,0);
 		std::string str = gob_cmd_update_position(
-			m_player->getPosition() + v3f(0,BS*1,0),
+			pos,
 			v3f(0,0,0),
 			v3f(0,0,0),
 			m_player->getYaw(),
@@ -961,32 +1168,63 @@ void PlayerSAO::step(float dtime, bool send_recommended)
 		ActiveObjectMessage aom(getId(), true, str);
 		m_messages_out.push_back(aom);
 	}
+
+	if(m_animation_sent == false){
+		m_animation_sent = true;
+		std::string str = gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), true, str);
+		m_messages_out.push_back(aom);
+	}
+
+	if(m_bone_position_sent == false){
+		m_bone_position_sent = true;
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			std::string str = gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y);
+			// create message and add to list
+			ActiveObjectMessage aom(getId(), true, str);
+			m_messages_out.push_back(aom);
+		}
+	}
+
+	if(m_attachment_sent == false){
+		m_attachment_sent = true;
+		std::string str = gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), true, str);
+		m_messages_out.push_back(aom);
+	}
 }
 
 void PlayerSAO::setBasePosition(const v3f &position)
 {
+	// This needs to be ran for attachments too
 	ServerActiveObject::setBasePosition(position);
 	m_position_not_sent = true;
 }
 
 void PlayerSAO::setPos(v3f pos)
 {
+	if(isAttached())
+		return;
 	m_player->setPosition(pos);
 	// Movement caused by this command is always valid
 	m_last_good_position = pos;
 	m_last_good_position_age = 0;
 	// Force position change on client
-	m_teleported = true;
+	m_moved = true;
 }
 
 void PlayerSAO::moveTo(v3f pos, bool continuous)
 {
+	if(isAttached())
+		return;
 	m_player->setPosition(pos);
 	// Movement caused by this command is always valid
 	m_last_good_position = pos;
 	m_last_good_position_age = 0;
 	// Force position change on client
-	m_teleported = true;
+	m_moved = true;
 }
 
 int PlayerSAO::punch(v3f dir,
@@ -994,6 +1232,10 @@ int PlayerSAO::punch(v3f dir,
 	ServerActiveObject *puncher,
 	float time_from_last_punch)
 {
+	// It's best that attachments cannot be punched 
+	if(isAttached())
+		return 0;
+
 	if(!toolcap)
 		return 0;
 
@@ -1075,6 +1317,39 @@ void PlayerSAO::setArmorGroups(const ItemGroupList &armor_groups)
 	m_armor_groups_sent = false;
 }
 
+void PlayerSAO::setAnimation(v2f frame_range, float frame_speed, float frame_blend)
+{
+	// store these so they can be updated to clients
+	m_animation_range = frame_range;
+	m_animation_speed = frame_speed;
+	m_animation_blend = frame_blend;
+	m_animation_sent = false;
+}
+
+void PlayerSAO::setBonePosition(std::string bone, v3f position, v3f rotation)
+{
+	// store these so they can be updated to clients
+	m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
+	m_bone_position_sent = false;
+}
+
+void PlayerSAO::setAttachment(int parent_id, std::string bone, v3f position, v3f rotation)
+{
+	// Attachments need to be handled on both the server and client.
+	// If we just attach on the server, we can only copy the position of the parent. Attachments
+	// are still sent to clients at an interval so players might see them lagging, plus we can't
+	// read and attach to skeletal bones.
+	// If we just attach on the client, the server still sees the child at its original location.
+	// This breaks some things so we also give the server the most accurate representation
+	// even if players only see the client changes.
+
+	m_attachment_parent_id = parent_id;
+	m_attachment_bone = bone;
+	m_attachment_position = position;
+	m_attachment_rotation = rotation;
+	m_attachment_sent = false;
+}
+
 ObjectProperties* PlayerSAO::accessObjectProperties()
 {
 	return &m_prop;
@@ -1138,7 +1413,7 @@ void PlayerSAO::disconnected()
 
 std::string PlayerSAO::getPropertyPacket()
 {
-	m_prop.is_visible = (getHP() != 0);
+	m_prop.is_visible = (true);
 	return gob_cmd_set_properties(m_prop);
 }
 

src/content_sao.h

@@ -43,11 +43,12 @@ class LuaEntitySAO : public ServerActiveObject
 	{ return ACTIVEOBJECT_TYPE_LUAENTITY; }
 	u8 getSendType() const
 	{ return ACTIVEOBJECT_TYPE_GENERIC; }
-	virtual void addedToEnvironment();
+	virtual void addedToEnvironment(u32 dtime_s);
 	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
 			const std::string &data);
+	bool isAttached();
 	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
+	std::string getClientInitializationData(u16 protocol_version);
 	std::string getStaticData();
 	int punch(v3f dir,
 			const ToolCapabilities *toolcap=NULL,
@@ -61,6 +62,9 @@ class LuaEntitySAO : public ServerActiveObject
 	void setHP(s16 hp);
 	s16 getHP() const;
 	void setArmorGroups(const ItemGroupList &armor_groups);
+	void setAnimation(v2f frame_range, float frame_speed, float frame_blend);
+	void setBonePosition(std::string bone, v3f position, v3f rotation);
+	void setAttachment(int parent_id, std::string bone, v3f position, v3f rotation);
 	ObjectProperties* accessObjectProperties();
 	void notifyObjectPropertiesModified();
 	/* LuaEntitySAO-specific */
@@ -96,6 +100,20 @@ class LuaEntitySAO : public ServerActiveObject
 	float m_last_sent_position_timer;
 	float m_last_sent_move_precision;
 	bool m_armor_groups_sent;
+	
+	v2f m_animation_range;
+	float m_animation_speed;
+	float m_animation_blend;
+	bool m_animation_sent;
+
+	std::map<std::string, core::vector2d<v3f> > m_bone_position;
+	bool m_bone_position_sent;
+
+	int m_attachment_parent_id;
+	std::string m_attachment_bone;
+	v3f m_attachment_position;
+	v3f m_attachment_rotation;
+	bool m_attachment_sent;
 };
 
 /*
@@ -118,12 +136,13 @@ class PlayerSAO : public ServerActiveObject
 		Active object <-> environment interface
 	*/
 
-	void addedToEnvironment();
+	void addedToEnvironment(u32 dtime_s);
 	void removingFromEnvironment();
 	bool isStaticAllowed() const;
 	bool unlimitedTransferDistance() const;
-	std::string getClientInitializationData();
+	std::string getClientInitializationData(u16 protocol_version);
 	std::string getStaticData();
+	bool isAttached();
 	void step(float dtime, bool send_recommended);
 	void setBasePosition(const v3f &position);
 	void setPos(v3f pos);
@@ -142,6 +161,9 @@ class PlayerSAO : public ServerActiveObject
 	void setHP(s16 hp);
 	
 	void setArmorGroups(const ItemGroupList &armor_groups);
+	void setAnimation(v2f frame_range, float frame_speed, float frame_blend);
+	void setBonePosition(std::string bone, v3f position, v3f rotation);
+	void setAttachment(int parent_id, std::string bone, v3f position, v3f rotation);
 	ObjectProperties* accessObjectProperties();
 	void notifyObjectPropertiesModified();
 
@@ -229,15 +251,32 @@ class PlayerSAO : public ServerActiveObject
 	bool m_position_not_sent;
 	ItemGroupList m_armor_groups;
 	bool m_armor_groups_sent;
+
+
+
 	bool m_properties_sent;
 	struct ObjectProperties m_prop;
 	// Cached privileges for enforcement
 	std::set<std::string> m_privs;
 	bool m_is_singleplayer;
 
+	v2f m_animation_range;
+	float m_animation_speed;
+	float m_animation_blend;
+	bool m_animation_sent;
+
+	std::map<std::string, core::vector2d<v3f> > m_bone_position; // Stores position and rotation for each bone name
+	bool m_bone_position_sent;
+
+	int m_attachment_parent_id;
+	std::string m_attachment_bone;
+	v3f m_attachment_position;
+	v3f m_attachment_rotation;
+	bool m_attachment_sent;
+
 public:
 	// Some flags used by Server
-	bool m_teleported;
+	bool m_moved;
 	bool m_inventory_not_sent;
 	bool m_hp_not_sent;
 	bool m_wielded_item_not_sent;

src/daynightratio.h

@@ -20,23 +20,49 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef DAYNIGHTRATIO_HEADER
 #define DAYNIGHTRATIO_HEADER
 
-inline u32 time_to_daynight_ratio(u32 time_of_day)
+inline u32 time_to_daynight_ratio(float time_of_day, bool smooth)
 {
-	s32 t = time_of_day%24000;
-	if(t < 4500 || t >= 19500)
-		return 150;
-	else if(t < 4750 || t >= 19250)
-		return 250;
-	else if(t < 5000 || t >= 19000)
-		return 350;
-	else if(t < 5250 || t >= 18750)
-		return 500;
-	else if(t < 5500 || t >= 18500)
-		return 675;
-	else if(t < 5750 || t >= 18250)
-		return 875;
-	else
+	float t = time_of_day;
+	if(t < 0)
+		t += ((int)(-t)/24000)*24000;
+	if(t >= 24000)
+		t -= ((int)(t)/24000)*24000;
+	if(t > 12000)
+		t = 24000 - t;
+	float values[][2] = {
+		{4250+125, 150},
+		{4500+125, 150},
+		{4750+125, 250},
+		{5000+125, 350},
+		{5250+125, 500},
+		{5500+125, 675},
+		{5750+125, 875},
+		{6000+125, 1000},
+		{6250+125, 1000},
+	};
+	if(!smooth){
+		float lastt = values[0][0];
+		for(u32 i=1; i<sizeof(values)/sizeof(*values); i++){
+			float t0 = values[i][0];
+			float switch_t = (t0 + lastt) / 2;
+			lastt = t0;
+			if(switch_t <= t)
+				continue;
+			return values[i][1];
+		}
 		return 1000;
+	} else {
+		for(u32 i=0; i<sizeof(values)/sizeof(*values); i++){
+			if(values[i][0] <= t)
+				continue;
+			if(i == 0)
+				return values[i][1];
+			float td0 = values[i][0] - values[i-1][0];
+			float f = (t - values[i-1][0]) / td0;
+			return f * values[i][1] + (1.0 - f) * values[i-1][1];
+		}
+		return 1000;
+	}
 }
 
 #endif

src/defaultsettings.cpp

@@ -52,7 +52,10 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("keymap_toggle_profiler", "KEY_F6");
 	settings->setDefault("keymap_increase_viewing_range_min", "+");
 	settings->setDefault("keymap_decrease_viewing_range_min", "-");
+	settings->setDefault("anaglyph", "false");
+	settings->setDefault("anaglyph_strength", "0.1");
 	settings->setDefault("aux1_descends", "false");
+
 	// Some (temporary) keys for debugging
 	settings->setDefault("keymap_print_debug_stacks", "KEY_KEY_P");
 	settings->setDefault("keymap_quicktune_prev", "KEY_HOME");
@@ -70,7 +73,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("wanted_fps", "30");
 	settings->setDefault("fps_max", "60");
 	// A bit more than the server will send around the player, to make fog blend well
-	settings->setDefault("viewing_range_nodes_max", "160");
+	settings->setDefault("viewing_range_nodes_max", "240");
 	settings->setDefault("viewing_range_nodes_min", "35");
 	settings->setDefault("screenW", "800");
 	settings->setDefault("screenH", "600");
@@ -89,6 +92,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("smooth_lighting", "true");
 	settings->setDefault("enable_texture_atlas", "true");
 	settings->setDefault("texture_path", "");
+	settings->setDefault("shader_path", "");
 	settings->setDefault("video_driver", "opengl");
 	settings->setDefault("free_move", "false");
 	settings->setDefault("continuous_forward", "false");
@@ -106,12 +110,19 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("sound_volume", "0.8");
 	settings->setDefault("desynchronize_mapblock_texture_animation", "true");
 
+	settings->setDefault("mip_map", "false");
+	settings->setDefault("anisotropic_filter", "false");
+	settings->setDefault("bilinear_filter", "false");
+	settings->setDefault("trilinear_filter", "false");
+	settings->setDefault("preload_item_visuals", "true");
+	settings->setDefault("enable_shaders", "2");
+
 	// Server stuff
 	// "map-dir" doesn't exist by default.
 	settings->setDefault("default_game", "minetest");
 	settings->setDefault("motd", "");
 	settings->setDefault("max_users", "100");
-	settings->setDefault("strict_protocol_version_checking", "true");
+	settings->setDefault("strict_protocol_version_checking", "false");
 	settings->setDefault("creative_mode", "false");
 	settings->setDefault("enable_damage", "true");
 	settings->setDefault("only_peaceful_mobs", "false");
@@ -140,7 +151,10 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("server_unload_unused_data_timeout", "29");
 	settings->setDefault("server_map_save_interval", "5.3");
 	settings->setDefault("full_block_send_enable_min_time_from_building", "2.0");
-	settings->setDefault("dedicated_server_step", "0.05");
+	settings->setDefault("dedicated_server_step", "0.1");
 	settings->setDefault("ignore_world_load_errors", "false");
+	settings->setDefault("congestion_control_aim_rtt", "0.2");
+	settings->setDefault("congestion_control_max_rate", "400");
+	settings->setDefault("congestion_control_min_rate", "10");
 }
 

src/environment.cpp

@@ -43,6 +43,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #endif
 #include "daynightratio.h"
 #include "map.h"
+#include "util/serialize.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
@@ -202,7 +203,8 @@ void Environment::printPlayers(std::ostream &o)
 
 u32 Environment::getDayNightRatio()
 {
-	return time_to_daynight_ratio(m_time_of_day);
+	bool smooth = (g_settings->getS32("enable_shaders") != 0);
+	return time_to_daynight_ratio(m_time_of_day_f*24000, smooth);
 }
 
 void Environment::stepTimeOfDay(float dtime)
@@ -328,7 +330,8 @@ ServerEnvironment::ServerEnvironment(ServerMap *map, lua_State *L,
 	m_send_recommended_timer(0),
 	m_active_block_interval_overload_skip(0),
 	m_game_time(0),
-	m_game_time_fraction_counter(0)
+	m_game_time_fraction_counter(0),
+	m_recommended_send_interval(0.1)
 {
 }
 
@@ -743,19 +746,25 @@ class ABMHandler
 				u32 active_object_count = block->m_static_objects.m_active.size();
 				// Find out how many objects this and all the neighbors contain
 				u32 active_object_count_wider = 0;
+				u32 wider_unknown_count = 0;
 				for(s16 x=-1; x<=1; x++)
 				for(s16 y=-1; y<=1; y++)
 				for(s16 z=-1; z<=1; z++)
 				{
 					MapBlock *block2 = map->getBlockNoCreateNoEx(
 							block->getPos() + v3s16(x,y,z));
-					if(block2==NULL)
+					if(block2==NULL){
+						wider_unknown_count = 0;
 						continue;
+					}
 					active_object_count_wider +=
 							block2->m_static_objects.m_active.size()
 							+ block2->m_static_objects.m_stored.size();
 				}
-
+				// Extrapolate
+				u32 wider_known_count = 3*3*3 - wider_unknown_count;
+				active_object_count_wider += wider_unknown_count * active_object_count_wider / wider_known_count;
+				
 				// Call all the trigger variations
 				i->abm->trigger(m_env, p, n);
 				i->abm->trigger(m_env, p, n,
@@ -784,7 +793,7 @@ void ServerEnvironment::activateBlock(MapBlock *block, u32 additional_dtime)
 			<<dtime_s<<" seconds old."<<std::endl;*/
 	
 	// Activate stored objects
-	activateObjects(block);
+	activateObjects(block, dtime_s);
 
 	// Run node timers
 	std::map<v3s16, NodeTimer> elapsed_timers =
@@ -933,6 +942,11 @@ void ServerEnvironment::step(float dtime)
 	/* Step time of day */
 	stepTimeOfDay(dtime);
 
+	// Update this one
+	// NOTE: This is kind of funny on a singleplayer game, but doesn't
+	// really matter that much.
+	m_recommended_send_interval = g_settings->getFloat("dedicated_server_step");
+
 	/*
 		Increment game time
 	*/
@@ -1243,7 +1257,7 @@ u16 getFreeServerActiveObjectId(
 u16 ServerEnvironment::addActiveObject(ServerActiveObject *object)
 {
 	assert(object);
-	u16 id = addActiveObjectRaw(object, true);
+	u16 id = addActiveObjectRaw(object, true, 0);
 	return id;
 }
 
@@ -1402,7 +1416,7 @@ ActiveObjectMessage ServerEnvironment::getActiveObjectMessage()
 */
 
 u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
-		bool set_changed)
+		bool set_changed, u32 dtime_s)
 {
 	assert(object);
 	if(object->getId() == 0){
@@ -1442,7 +1456,7 @@ u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
 	// Register reference in scripting api (must be done before post-init)
 	scriptapi_add_object_reference(m_lua, object);
 	// Post-initialize object
-	object->addedToEnvironment();
+	object->addedToEnvironment(dtime_s);
 	
 	// Add static data to block
 	if(object->isStaticAllowed())
@@ -1465,9 +1479,10 @@ u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
 						"addActiveObjectRaw");
 		}
 		else{
+			v3s16 p = floatToInt(objectpos, BS);
 			errorstream<<"ServerEnvironment::addActiveObjectRaw(): "
 					<<"could not find block for storing id="<<object->getId()
-					<<" statically"<<std::endl;
+					<<" statically (pos="<<PP(p)<<")"<<std::endl;
 		}
 	}
 	
@@ -1578,7 +1593,7 @@ static void print_hexdump(std::ostream &o, const std::string &data)
 /*
 	Convert stored objects from blocks near the players to active.
 */
-void ServerEnvironment::activateObjects(MapBlock *block)
+void ServerEnvironment::activateObjects(MapBlock *block, u32 dtime_s)
 {
 	if(block==NULL)
 		return;
@@ -1602,7 +1617,7 @@ void ServerEnvironment::activateObjects(MapBlock *block)
 				"large amount of objects");
 		return;
 	}
-	// A list for objects that couldn't be converted to static for some
+	// A list for objects that couldn't be converted to active for some
 	// reason. They will be stored back.
 	core::list<StaticObject> new_stored;
 	// Loop through stored static objects
@@ -1632,7 +1647,7 @@ void ServerEnvironment::activateObjects(MapBlock *block)
 				<<"activated static object pos="<<PP(s_obj.pos/BS)
 				<<" type="<<(int)s_obj.type<<std::endl;
 		// This will also add the object to the active static list
-		addActiveObjectRaw(obj, false);
+		addActiveObjectRaw(obj, false, dtime_s);
 	}
 	// Clear stored list
 	block->m_static_objects.m_stored.clear();
@@ -1756,7 +1771,12 @@ void ServerEnvironment::deactivateFarObjects(bool force_delete)
 			// Add to the block where the object is located in
 			v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
 			// Get or generate the block
-			MapBlock *block = m_map->emergeBlock(blockpos);
+			MapBlock *block = NULL;
+			try{
+				block = m_map->emergeBlock(blockpos);
+			} catch(InvalidPositionException &e){
+				// Handled via NULL pointer
+			}
 
 			if(block)
 			{
@@ -1793,9 +1813,10 @@ void ServerEnvironment::deactivateFarObjects(bool force_delete)
 			}
 			else{
 				if(!force_delete){
+					v3s16 p = floatToInt(objectpos, BS);
 					errorstream<<"ServerEnv: Could not find or generate "
 							<<"a block for storing id="<<obj->getId()
-							<<" statically"<<std::endl;
+							<<" statically (pos="<<PP(p)<<")"<<std::endl;
 					continue;
 				}
 			}
@@ -2112,15 +2133,15 @@ void ClientEnvironment::step(float dtime)
 		}
 		
 		// Update lighting on all players on client
-		u8 light = LIGHT_MAX;
+		float light = 1.0;
 		try{
 			// Get node at head
 			v3s16 p = player->getLightPosition();
 			MapNode n = m_map->getNode(p);
-			light = n.getLightBlend(getDayNightRatio(), m_gamedef->ndef());
+			light = n.getLightBlendF1((float)getDayNightRatio()/1000, m_gamedef->ndef());
 		}
 		catch(InvalidPositionException &e){
-			light = blend_light(getDayNightRatio(), LIGHT_SUN, 0);
+			light = blend_light_f1((float)getDayNightRatio()/1000, LIGHT_SUN, 0);
 		}
 		player->light = light;
 	}
@@ -2129,6 +2150,7 @@ void ClientEnvironment::step(float dtime)
 		Step active objects and update lighting of them
 	*/
 	
+	bool update_lighting = m_active_object_light_update_interval.step(dtime, 0.21);
 	for(core::map<u16, ClientActiveObject*>::Iterator
 			i = m_active_objects.getIterator();
 			i.atEnd()==false; i++)
@@ -2137,7 +2159,7 @@ void ClientEnvironment::step(float dtime)
 		// Step object
 		obj->step(dtime, this);
 
-		if(m_active_object_light_update_interval.step(dtime, 0.21))
+		if(update_lighting)
 		{
 			// Update lighting
 			u8 light = 0;
@@ -2282,8 +2304,9 @@ void ClientEnvironment::addActiveObject(u16 id, u8 type,
 	{
 		errorstream<<"ClientEnvironment::addActiveObject():"
 				<<" id="<<id<<" type="<<type
-				<<": SerializationError in initialize(),"
-				<<" init_data="<<serializeJsonString(init_data)
+				<<": SerializationError in initialize(): "
+				<<e.what()
+				<<": init_data="<<serializeJsonString(init_data)
 				<<std::endl;
 	}
 
@@ -2301,7 +2324,7 @@ void ClientEnvironment::removeActiveObject(u16 id)
 				<<"id="<<id<<" not found"<<std::endl;
 		return;
 	}
-	obj->removeFromScene();
+	obj->removeFromScene(true);
 	delete obj;
 	m_active_objects.remove(id);
 }

src/environment.h

@@ -205,9 +205,7 @@ class ServerEnvironment : public Environment
 		{ return m_gamedef; }
 
 	float getSendRecommendedInterval()
-	{
-		return 0.10;
-	}
+		{ return m_recommended_send_interval; }
 
 	/*
 		Save players
@@ -312,7 +310,7 @@ class ServerEnvironment : public Environment
 		Returns the id of the object.
 		Returns 0 if not added and thus deleted.
 	*/
-	u16 addActiveObjectRaw(ServerActiveObject *object, bool set_changed);
+	u16 addActiveObjectRaw(ServerActiveObject *object, bool set_changed, u32 dtime_s);
 	
 	/*
 		Remove all objects that satisfy (m_removed && m_known_by_count==0)
@@ -322,7 +320,7 @@ class ServerEnvironment : public Environment
 	/*
 		Convert stored objects from block to active
 	*/
-	void activateObjects(MapBlock *block);
+	void activateObjects(MapBlock *block, u32 dtime_s);
 	
 	/*
 		Convert objects that are not in active blocks to static.
@@ -367,6 +365,8 @@ class ServerEnvironment : public Environment
 	// A helper variable for incrementing the latter
 	float m_game_time_fraction_counter;
 	core::list<ABMWithState> m_abms;
+	// An interval for generally sending object positions and stuff
+	float m_recommended_send_interval;
 };
 
 #ifndef SERVER
@@ -463,6 +463,8 @@ class ClientEnvironment : public Environment
 	
 	// Get event from queue. CEE_NONE is returned if queue is empty.
 	ClientEnvEvent getClientEvent();
+
+	std::vector<core::vector2d<int> > attachment_list; // X is child ID, Y is parent ID
 	
 private:
 	ClientMap *m_map;

src/game.cpp

@@ -24,6 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <IGUIButton.h>
 #include <IGUIStaticText.h>
 #include <IGUIFont.h>
+#include <IMaterialRendererServices.h>
 #include "client.h"
 #include "server.h"
 #include "guiPauseMenu.h"
@@ -50,6 +51,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "main.h" // For g_settings
 #include "itemdef.h"
 #include "tile.h" // For TextureSource
+#include "shader.h" // For ShaderSource
 #include "logoutputbuffer.h"
 #include "subgame.h"
 #include "quicktune_shortcutter.h"
@@ -834,6 +836,53 @@ class GameOnDemandSoundFetcher: public OnDemandSoundFetcher
 	}
 };
 
+class GameGlobalShaderConstantSetter : public IShaderConstantSetter
+{
+	Sky *m_sky;
+	bool *m_force_fog_off;
+	f32 *m_fog_range;
+	Client *m_client;
+
+public:
+	GameGlobalShaderConstantSetter(Sky *sky, bool *force_fog_off,
+			f32 *fog_range, Client *client):
+		m_sky(sky),
+		m_force_fog_off(force_fog_off),
+		m_fog_range(fog_range),
+		m_client(client)
+	{}
+	~GameGlobalShaderConstantSetter() {}
+
+	virtual void onSetConstants(video::IMaterialRendererServices *services,
+			bool is_highlevel)
+	{
+		if(!is_highlevel)
+			return;
+
+		// Background color
+		video::SColor bgcolor = m_sky->getBgColor();
+		video::SColorf bgcolorf(bgcolor);
+		float bgcolorfa[4] = {
+			bgcolorf.r,
+			bgcolorf.g,
+			bgcolorf.b,
+			bgcolorf.a,
+		};
+		services->setPixelShaderConstant("skyBgColor", bgcolorfa, 4);
+
+		// Fog distance
+		float fog_distance = *m_fog_range;
+		if(*m_force_fog_off)
+			fog_distance = 10000*BS;
+		services->setPixelShaderConstant("fogDistance", &fog_distance, 1);
+
+		// Day-night ratio
+		u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
+		float daynight_ratio_f = (float)daynight_ratio / 1000.0;
+		services->setPixelShaderConstant("dayNightRatio", &daynight_ratio_f, 1);
+	}
+};
+
 void the_game(
 	bool &kill,
 	bool random_input,
@@ -876,6 +925,9 @@ void the_game(
 	// Create texture source
 	IWritableTextureSource *tsrc = createTextureSource(device);
 	
+	// Create shader source
+	IWritableShaderSource *shsrc = createShaderSource(device);
+	
 	// These will be filled by data received from the server
 	// Create item definition manager
 	IWritableItemDefManager *itemdef = createItemDefManager();
@@ -943,7 +995,7 @@ void the_game(
 	MapDrawControl draw_control;
 
 	Client client(device, playername.c_str(), password, draw_control,
-			tsrc, itemdef, nodedef, sound, &eventmgr);
+			tsrc, shsrc, itemdef, nodedef, sound, &eventmgr);
 	
 	// Client acts as our GameDef
 	IGameDef *gamedef = &client;
@@ -1162,7 +1214,7 @@ void the_game(
 
 	// First line of debug text
 	gui::IGUIStaticText *guitext = guienv->addStaticText(
-			L"Minetest-c55",
+			L"Minetest",
 			core::rect<s32>(5, 5, 795, 5+text_height),
 			false, false);
 	// Second line of debug text
@@ -1246,6 +1298,7 @@ void the_game(
 	bool show_hud = true;
 	bool show_chat = true;
 	bool force_fog_off = false;
+	f32 fog_range = 100*BS;
 	bool disable_camera_update = false;
 	bool show_debug = g_settings->getBool("show_debug");
 	bool show_profiler_graph = false;
@@ -1255,6 +1308,12 @@ void the_game(
 	float time_of_day = 0;
 	float time_of_day_smooth = 0;
 
+	/*
+		Shader constants
+	*/
+	shsrc->addGlobalConstantSetter(new GameGlobalShaderConstantSetter(
+			sky, &force_fog_off, &fog_range, &client));
+
 	/*
 		Main loop
 	*/
@@ -1416,11 +1475,17 @@ void the_game(
 			g_gamecallback->changepassword_requested = false;
 		}
 
-		/*
-			Process TextureSource's queue
-		*/
+		/* Process TextureSource's queue */
 		tsrc->processQueue();
 
+		/* Process ItemDefManager's queue */
+		itemdef->processQueue(gamedef);
+
+		/*
+			Process ShaderSource's queue
+		*/
+		shsrc->processQueue();
+
 		/*
 			Random calculations
 		*/
@@ -1513,7 +1578,7 @@ void the_game(
 					<<"Launching inventory"<<std::endl;
 			
 			GUIFormSpecMenu *menu =
-				new GUIFormSpecMenu(guienv, guiroot, -1,
+				new GUIFormSpecMenu(device, guiroot, -1,
 					&g_menumgr,
 					&client, gamedef);
 
@@ -1881,6 +1946,8 @@ void the_game(
 			bool a_jump,
 			bool a_superspeed,
 			bool a_sneak,
+			bool a_LMB,
+			bool a_RMB,
 			float a_pitch,
 			float a_yaw*/
 			PlayerControl control(
@@ -1891,10 +1958,24 @@ void the_game(
 				input->isKeyDown(getKeySetting("keymap_jump")),
 				input->isKeyDown(getKeySetting("keymap_special1")),
 				input->isKeyDown(getKeySetting("keymap_sneak")),
+				input->getLeftState(),
+				input->getRightState(),
 				camera_pitch,
 				camera_yaw
 			);
 			client.setPlayerControl(control);
+			u32 keyPressed=
+			1*(int)input->isKeyDown(getKeySetting("keymap_forward"))+
+			2*(int)input->isKeyDown(getKeySetting("keymap_backward"))+
+			4*(int)input->isKeyDown(getKeySetting("keymap_left"))+
+			8*(int)input->isKeyDown(getKeySetting("keymap_right"))+
+			16*(int)input->isKeyDown(getKeySetting("keymap_jump"))+
+			32*(int)input->isKeyDown(getKeySetting("keymap_special1"))+
+			64*(int)input->isKeyDown(getKeySetting("keymap_sneak"))+
+			128*(int)input->getLeftState()+
+			256*(int)input->getRightState();
+			LocalPlayer* player = client.getEnv().getLocalPlayer();
+			player->keyPressed=keyPressed;
 		}
 		
 		/*
@@ -2280,7 +2361,7 @@ void the_game(
 					/* Create menu */
 
 					GUIFormSpecMenu *menu =
-						new GUIFormSpecMenu(guienv, guiroot, -1,
+						new GUIFormSpecMenu(device, guiroot, -1,
 							&g_menumgr,
 							&client, gamedef);
 					menu->setFormSpec(meta->getString("formspec"),
@@ -2408,7 +2489,6 @@ void the_game(
 			Fog range
 		*/
 	
-		f32 fog_range;
 		if(farmesh)
 		{
 			fog_range = BS*farmesh_range;
@@ -2425,8 +2505,7 @@ void the_game(
 			Calculate general brightness
 		*/
 		u32 daynight_ratio = client.getEnv().getDayNightRatio();
-		float time_brightness = (float)decode_light(
-				(daynight_ratio * LIGHT_SUN) / 1000) / 255.0;
+		float time_brightness = decode_light_f((float)daynight_ratio/1000.0);
 		float direct_brightness = 0;
 		bool sunlight_seen = false;
 		if(g_settings->getBool("free_move")){
@@ -2528,7 +2607,7 @@ void the_game(
 		//TimeTaker guiupdatetimer("Gui updating");
 		
 		const char program_name_and_version[] =
-			"Minetest-c55 " VERSION_STRING;
+			"Minetest " VERSION_STRING;
 
 		if(show_debug)
 		{
@@ -2734,6 +2813,76 @@ void the_game(
 		{
 			TimeTaker timer("smgr");
 			smgr->drawAll();
+			
+			if(g_settings->getBool("anaglyph"))
+			{
+				irr::core::vector3df oldPosition = camera.getCameraNode()->getPosition();
+				irr::core::vector3df oldTarget   = camera.getCameraNode()->getTarget();
+
+				irr::core::matrix4 startMatrix   = camera.getCameraNode()->getAbsoluteTransformation();
+
+				irr::core::vector3df focusPoint  = (camera.getCameraNode()->getTarget() -
+										 camera.getCameraNode()->getAbsolutePosition()).setLength(1) +
+										 camera.getCameraNode()->getAbsolutePosition() ;
+
+				//Left eye...
+				irr::core::vector3df leftEye;
+				irr::core::matrix4   leftMove;
+
+				leftMove.setTranslation( irr::core::vector3df(-g_settings->getFloat("anaglyph_strength"),0.0f,0.0f) );
+				leftEye=(startMatrix*leftMove).getTranslation();
+
+				//clear the depth buffer, and color
+				driver->beginScene( true, true, irr::video::SColor(0,200,200,255) );
+
+				driver->getOverrideMaterial().Material.ColorMask = irr::video::ECP_RED;
+				driver->getOverrideMaterial().EnableFlags  = irr::video::EMF_COLOR_MASK;
+				driver->getOverrideMaterial().EnablePasses = irr::scene::ESNRP_SKY_BOX + 
+															 irr::scene::ESNRP_SOLID +
+															 irr::scene::ESNRP_TRANSPARENT +
+															 irr::scene::ESNRP_TRANSPARENT_EFFECT +
+															 irr::scene::ESNRP_SHADOW;
+
+				camera.getCameraNode()->setPosition( leftEye );
+				camera.getCameraNode()->setTarget( focusPoint );
+
+				smgr->drawAll(); // 'smgr->drawAll();' may go here
+
+
+				//Right eye...
+				irr::core::vector3df rightEye;
+				irr::core::matrix4   rightMove;
+
+				rightMove.setTranslation( irr::core::vector3df(g_settings->getFloat("anaglyph_strength"),0.0f,0.0f) );
+				rightEye=(startMatrix*rightMove).getTranslation();
+
+				//clear the depth buffer
+				driver->clearZBuffer();
+
+				driver->getOverrideMaterial().Material.ColorMask = irr::video::ECP_GREEN + irr::video::ECP_BLUE;
+				driver->getOverrideMaterial().EnableFlags  = irr::video::EMF_COLOR_MASK;
+				driver->getOverrideMaterial().EnablePasses = irr::scene::ESNRP_SKY_BOX +
+															 irr::scene::ESNRP_SOLID +
+															 irr::scene::ESNRP_TRANSPARENT +
+															 irr::scene::ESNRP_TRANSPARENT_EFFECT +
+															 irr::scene::ESNRP_SHADOW;
+
+				camera.getCameraNode()->setPosition( rightEye );
+				camera.getCameraNode()->setTarget( focusPoint );
+
+				smgr->drawAll(); // 'smgr->drawAll();' may go here
+
+
+				//driver->endScene();
+
+				driver->getOverrideMaterial().Material.ColorMask=irr::video::ECP_ALL;
+				driver->getOverrideMaterial().EnableFlags=0;
+				driver->getOverrideMaterial().EnablePasses=0;
+
+				camera.getCameraNode()->setPosition( oldPosition );
+				camera.getCameraNode()->setTarget( oldTarget );
+			}
+
 			scenetime = timer.stop(true);
 		}
 		
@@ -2809,11 +2958,6 @@ void the_game(
 		//timer10.stop();
 		//TimeTaker //timer11("//timer11");
 
-		/*
-			Draw gui
-		*/
-		// 0-1ms
-		guienv->drawAll();
 
 		/*
 			Draw hotbar
@@ -2839,6 +2983,12 @@ void the_game(
 					NULL);
 		}
 
+		/*
+			Draw gui
+		*/
+		// 0-1ms
+		guienv->drawAll();
+
 		/*
 			End scene
 		*/
@@ -2915,9 +3065,11 @@ void the_game(
 	
 	if(!sound_is_dummy)
 		delete sound;
+
+	delete tsrc;
+	delete shsrc;
 	delete nodedef;
 	delete itemdef;
-	delete tsrc;
 }
 
 

src/gamedef.h

@@ -28,6 +28,7 @@ class INodeDefManager;
 class ICraftDefManager;
 class ITextureSource;
 class ISoundManager;
+class IShaderSource;
 class MtEventManager;
 class IRollbackReportSink;
 
@@ -48,6 +49,8 @@ class IGameDef
 	// This is always thread-safe, but referencing the irrlicht texture
 	// pointers in other threads than main thread will make things explode.
 	virtual ITextureSource* getTextureSource()=0;
+
+	virtual IShaderSource* getShaderSource()=0;
 	
 	// Used for keeping track of names/ids of unknown nodes
 	virtual u16 allocateUnknownNodeId(const std::string &name)=0;
@@ -70,6 +73,7 @@ class IGameDef
 	ICraftDefManager* cdef(){return getCraftDefManager();}
 	ITextureSource* tsrc(){return getTextureSource();}
 	ISoundManager* sound(){return getSoundManager();}
+	IShaderSource* shsrc(){return getShaderSource();}
 	MtEventManager* event(){return getEventManager();}
 	IRollbackReportSink* rollback(){return getRollbackReportSink();}
 };

src/genericobject.cpp

@@ -117,4 +117,40 @@ std::string gob_cmd_update_armor_groups(const ItemGroupList &armor_groups)
 	return os.str();
 }
 
+std::string gob_cmd_update_animation(v2f frames, float frame_speed, float frame_blend)
+{
+	std::ostringstream os(std::ios::binary);
+	// command 
+	writeU8(os, GENERIC_CMD_SET_ANIMATION);
+	// parameters
+	writeV2F1000(os, frames);
+	writeF1000(os, frame_speed);
+	writeF1000(os, frame_blend);
+	return os.str();
+}
+
+std::string gob_cmd_update_bone_position(std::string bone, v3f position, v3f rotation)
+{
+	std::ostringstream os(std::ios::binary);
+	// command 
+	writeU8(os, GENERIC_CMD_SET_BONE_POSITION);
+	// parameters
+	os<<serializeString(bone);
+	writeV3F1000(os, position);
+	writeV3F1000(os, rotation);
+	return os.str();
+}
+
+std::string gob_cmd_update_attachment(int parent_id, std::string bone, v3f position, v3f rotation)
+{
+	std::ostringstream os(std::ios::binary);
+	// command 
+	writeU8(os, GENERIC_CMD_SET_ATTACHMENT);
+	// parameters
+	writeS16(os, parent_id);
+	os<<serializeString(bone);
+	writeV3F1000(os, position);
+	writeV3F1000(os, rotation);
+	return os.str();
+}
 

src/genericobject.h

@@ -30,6 +30,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define GENERIC_CMD_SET_SPRITE 3
 #define GENERIC_CMD_PUNCHED 4
 #define GENERIC_CMD_UPDATE_ARMOR_GROUPS 5
+#define GENERIC_CMD_SET_ANIMATION 6
+#define GENERIC_CMD_SET_BONE_POSITION 7
+#define GENERIC_CMD_SET_ATTACHMENT 8
 
 #include "object_properties.h"
 std::string gob_cmd_set_properties(const ObjectProperties &prop);
@@ -59,5 +62,11 @@ std::string gob_cmd_punched(s16 damage, s16 result_hp);
 #include "itemgroup.h"
 std::string gob_cmd_update_armor_groups(const ItemGroupList &armor_groups);
 
+std::string gob_cmd_update_animation(v2f frames, float frame_speed, float frame_blend);
+
+std::string gob_cmd_update_bone_position(std::string bone, v3f position, v3f rotation);
+
+std::string gob_cmd_update_attachment(int parent_id, std::string bone, v3f position, v3f rotation);
+
 #endif
 

src/guiFormSpecMenu.cpp

@@ -46,7 +46,7 @@ void drawItemStack(video::IVideoDriver *driver,
 		return;
 	
 	const ItemDefinition &def = item.getDefinition(gamedef->idef());
-	video::ITexture *texture = def.inventory_texture;
+	video::ITexture *texture = gamedef->idef()->getInventoryTexture(def.name, gamedef);
 
 	// Draw the inventory texture
 	if(texture != NULL)
@@ -125,13 +125,14 @@ void drawItemStack(video::IVideoDriver *driver,
 	GUIFormSpecMenu
 */
 
-GUIFormSpecMenu::GUIFormSpecMenu(gui::IGUIEnvironment* env,
+GUIFormSpecMenu::GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 		gui::IGUIElement* parent, s32 id,
 		IMenuManager *menumgr,
 		InventoryManager *invmgr,
 		IGameDef *gamedef
 ):
-	GUIModalMenu(env, parent, id, menumgr),
+	GUIModalMenu(dev->getGUIEnvironment(), parent, id, menumgr),
+	m_device(dev),
 	m_invmgr(invmgr),
 	m_gamedef(gamedef),
 	m_form_src(NULL),
@@ -199,6 +200,8 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
 	
 	m_inventorylists.clear();
 	m_images.clear();
+	m_backgrounds.clear();
+	m_itemimages.clear();
 	m_fields.clear();
 
 	Strfnd f(m_formspec_string);
@@ -278,9 +281,43 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
 					<<", geom=("<<geom.X<<","<<geom.Y<<")"
 					<<std::endl;
 			if(bp_set != 2)
-				errorstream<<"WARNING: invalid use of button without a size[] element"<<std::endl;
+				errorstream<<"WARNING: invalid use of image without a size[] element"<<std::endl;
 			m_images.push_back(ImageDrawSpec(name, pos, geom));
 		}
+		else if(type == "item_image")
+		{
+			v2s32 pos = basepos;
+			pos.X += stof(f.next(",")) * (float)spacing.X;
+			pos.Y += stof(f.next(";")) * (float)spacing.Y;
+			v2s32 geom;
+			geom.X = stof(f.next(",")) * (float)imgsize.X;
+			geom.Y = stof(f.next(";")) * (float)imgsize.Y;
+			std::string name = f.next("]");
+			errorstream<<"item name="<<name
+					<<", pos=("<<pos.X<<","<<pos.Y<<")"
+					<<", geom=("<<geom.X<<","<<geom.Y<<")"
+					<<std::endl;
+			if(bp_set != 2)
+				errorstream<<"WARNING: invalid use of item_image without a size[] element"<<std::endl;
+			m_itemimages.push_back(ImageDrawSpec(name, pos, geom));
+		}
+		else if(type == "background")
+		{
+			v2s32 pos = basepos;
+			pos.X += stof(f.next(",")) * (float)spacing.X - ((float)spacing.X-(float)imgsize.X)/2;
+			pos.Y += stof(f.next(";")) * (float)spacing.Y - ((float)spacing.Y-(float)imgsize.Y)/2;
+			v2s32 geom;
+			geom.X = stof(f.next(",")) * (float)spacing.X;
+			geom.Y = stof(f.next(";")) * (float)spacing.Y;
+			std::string name = f.next("]");
+			infostream<<"image name="<<name
+					<<", pos=("<<pos.X<<","<<pos.Y<<")"
+					<<", geom=("<<geom.X<<","<<geom.Y<<")"
+					<<std::endl;
+			if(bp_set != 2)
+				errorstream<<"WARNING: invalid use of background without a size[] element"<<std::endl;
+			m_backgrounds.push_back(ImageDrawSpec(name, pos, geom));
+		}
 		else if(type == "field")
 		{
 			std::string fname = f.next(";");
@@ -458,12 +495,50 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
 			
 			video::ITexture *texture = m_gamedef->tsrc()->getTextureRaw(fimage);
 			gui::IGUIButton *e = Environment->addButton(rect, this, spec.fid, spec.flabel.c_str());
+			e->setUseAlphaChannel(true);
 			e->setImage(texture);
 			e->setPressedImage(texture);
 			e->setScaleImage(true);
 			
 			m_fields.push_back(spec);
 		}
+		else if(type == "item_image_button")
+		{
+			v2s32 pos = padding;
+			pos.X += stof(f.next(",")) * (float)spacing.X;
+			pos.Y += stof(f.next(";")) * (float)spacing.Y;
+			v2s32 geom;
+			geom.X = (stof(f.next(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
+			geom.Y = (stof(f.next(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
+			rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);		
+			std::string fimage = f.next(";");
+			std::string fname = f.next(";");
+			std::string flabel = f.next("]");
+			if(bp_set != 2)
+				errorstream<<"WARNING: invalid use of item_image_button without a size[] element"<<std::endl;		
+			IItemDefManager *idef = m_gamedef->idef();
+			ItemStack item;
+			item.deSerialize(fimage, idef);
+			video::ITexture *texture = idef->getInventoryTexture(item.getDefinition(idef).name, m_gamedef);
+			std::string tooltip = item.getDefinition(idef).description;
+			FieldSpec spec = FieldSpec(
+				narrow_to_wide(fname.c_str()),
+				narrow_to_wide(flabel.c_str()),
+				narrow_to_wide(fimage.c_str()),
+				258+m_fields.size()
+			);
+			gui::IGUIButton *e = Environment->addButton(rect, this, spec.fid, spec.flabel.c_str());
+			e->setUseAlphaChannel(true);
+			e->setImage(texture);
+			e->setPressedImage(texture);
+			e->setScaleImage(true);
+			spec.is_button = true;
+			rect+=basepos-padding;
+			spec.rect=rect;		
+			if (tooltip!="")
+				spec.tooltip=tooltip;
+			m_fields.push_back(spec);
+		}
 		else
 		{
 			// Ignore others
@@ -679,6 +754,8 @@ void GUIFormSpecMenu::drawMenu()
 		}
 	}
 
+	m_pointer = m_device->getCursorControl()->getPosition();
+
 	updateSelectedItem();
 
 	gui::IGUISkin* skin = Environment->getSkin();
@@ -692,17 +769,28 @@ void GUIFormSpecMenu::drawMenu()
 	m_tooltip_element->setVisible(false);
 
 	/*
-		Draw items
-		Phase 0: Item slot rectangles
-		Phase 1: Item images; prepare tooltip
+		Draw backgrounds
 	*/
-	
-	for(int phase=0; phase<=1; phase++)
-	for(u32 i=0; i<m_inventorylists.size(); i++)
+	for(u32 i=0; i<m_backgrounds.size(); i++)
 	{
-		drawList(m_inventorylists[i], phase);
+		const ImageDrawSpec &spec = m_backgrounds[i];
+		video::ITexture *texture =
+				m_gamedef->tsrc()->getTextureRaw(spec.name);
+		// Image size on screen
+		core::rect<s32> imgrect(0, 0, spec.geom.X, spec.geom.Y);
+		// Image rectangle on screen
+		core::rect<s32> rect = imgrect + spec.pos;
+		const video::SColor color(255,255,255,255);
+		const video::SColor colors[] = {color,color,color,color};
+		driver->draw2DImage(texture, rect,
+			core::rect<s32>(core::position2d<s32>(0,0),
+					core::dimension2di(texture->getOriginalSize())),
+			NULL/*&AbsoluteClippingRect*/, colors, true);
 	}
-
+	
+	/*
+		Draw images
+	*/
 	for(u32 i=0; i<m_images.size(); i++)
 	{
 		const ImageDrawSpec &spec = m_images[i];
@@ -721,14 +809,53 @@ void GUIFormSpecMenu::drawMenu()
 	}
 
 	/*
-		Draw dragged item stack
+		Draw items
+		Phase 0: Item slot rectangles
+		Phase 1: Item images; prepare tooltip
+		If backgrounds used, do not draw Item slot rectangles
 	*/
-	drawSelectedItem();
+	int start_phase=0;
+	if (m_backgrounds.size() > 0) start_phase=1;
+	for(int phase=start_phase; phase<=1; phase++)
+	for(u32 i=0; i<m_inventorylists.size(); i++)
+	{
+		drawList(m_inventorylists[i], phase);
+	}
 
 	/*
 		Call base class
 	*/
 	gui::IGUIElement::draw();
+	
+	/*
+		Draw fields/buttons tooltips
+	*/
+	for(u32 i=0; i<m_fields.size(); i++)
+	{
+		const FieldSpec &spec = m_fields[i];
+		if (spec.tooltip != "")
+		{
+			core::rect<s32> rect = spec.rect;
+			if (rect.isPointInside(m_pointer)) 
+			{
+				m_tooltip_element->setVisible(true);
+				this->bringToFront(m_tooltip_element);
+				m_tooltip_element->setText(narrow_to_wide(spec.tooltip).c_str());
+				s32 tooltip_x = m_pointer.X + 15;
+				s32 tooltip_y = m_pointer.Y + 15;
+				s32 tooltip_width = m_tooltip_element->getTextWidth() + 15;
+				s32 tooltip_height = m_tooltip_element->getTextHeight() + 5;
+				m_tooltip_element->setRelativePosition(core::rect<s32>(
+				core::position2d<s32>(tooltip_x, tooltip_y),
+				core::dimension2d<s32>(tooltip_width, tooltip_height)));
+			}
+		}
+	}
+	
+	/*
+		Draw dragged item stack
+	*/
+	drawSelectedItem();
 }
 
 void GUIFormSpecMenu::updateSelectedItem()
@@ -893,24 +1020,15 @@ bool GUIFormSpecMenu::OnEvent(const SEvent& event)
 			return true;
 		}
 	}
-	if(event.EventType==EET_MOUSE_INPUT_EVENT
-			&& event.MouseInput.Event == EMIE_MOUSE_MOVED)
-	{
-		// Mouse moved
-		m_pointer = v2s32(event.MouseInput.X, event.MouseInput.Y);
-	}
 	if(event.EventType==EET_MOUSE_INPUT_EVENT
 			&& event.MouseInput.Event != EMIE_MOUSE_MOVED)
 	{
 		// Mouse event other than movement
 
-		v2s32 p(event.MouseInput.X, event.MouseInput.Y);
-		m_pointer = p;
-
 		// Get selected item and hovered/clicked item (s)
 
 		updateSelectedItem();
-		ItemSpec s = getItemAtPos(p);
+		ItemSpec s = getItemAtPos(m_pointer);
 
 		Inventory *inv_selected = NULL;
 		Inventory *inv_s = NULL;

src/guiFormSpecMenu.h

@@ -133,6 +133,7 @@ class GUIFormSpecMenu : public GUIModalMenu
 			send = false;
 			is_button = false;
 			is_exit = false;
+			tooltip="";
 		}
 		std::wstring fname;
 		std::wstring flabel;
@@ -141,10 +142,12 @@ class GUIFormSpecMenu : public GUIModalMenu
 		bool send;
 		bool is_button;
 		bool is_exit;
+		core::rect<s32> rect;
+		std::string tooltip;
 	};
 
 public:
-	GUIFormSpecMenu(gui::IGUIEnvironment* env,
+	GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 			gui::IGUIElement* parent, s32 id,
 			IMenuManager *menumgr,
 			InventoryManager *invmgr,
@@ -197,6 +200,7 @@ class GUIFormSpecMenu : public GUIModalMenu
 	v2s32 spacing;
 	v2s32 imgsize;
 	
+	irr::IrrlichtDevice* m_device;
 	InventoryManager *m_invmgr;
 	IGameDef *m_gamedef;
 
@@ -206,7 +210,9 @@ class GUIFormSpecMenu : public GUIModalMenu
 	TextDest *m_text_dst;
 
 	core::array<ListDrawSpec> m_inventorylists;
+	core::array<ImageDrawSpec> m_backgrounds;	
 	core::array<ImageDrawSpec> m_images;
+	core::array<ImageDrawSpec> m_itemimages;
 	core::array<FieldSpec> m_fields;
 
 	ItemSpec *m_selected_item;

src/guiMainMenu.cpp

@@ -98,6 +98,12 @@ enum
 	GUI_ID_SMOOTH_LIGHTING_CB,
 	GUI_ID_3D_CLOUDS_CB,
 	GUI_ID_OPAQUE_WATER_CB,
+	GUI_ID_MIPMAP_CB,
+	GUI_ID_ANISOTROPIC_CB,
+	GUI_ID_BILINEAR_CB,
+	GUI_ID_TRILINEAR_CB,
+	GUI_ID_SHADERS_CB,
+	GUI_ID_PRELOAD_ITEM_VISUALS_CB,
 	GUI_ID_DAMAGE_CB,
 	GUI_ID_CREATIVE_CB,
 	GUI_ID_JOIN_GAME_BUTTON,
@@ -202,7 +208,7 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 		core::rect<s32> rect(0, 0, size.X, 40);
 		rect += v2s32(4, 0);
 		Environment->addStaticText(narrow_to_wide(
-				"Minetest-c55 " VERSION_STRING).c_str(),
+				"Minetest " VERSION_STRING).c_str(),
 				rect, false, true, this, -1);
 	}
 
@@ -580,6 +586,53 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 			Environment->addCheckBox(m_data->opaque_water, rect, this,
 					GUI_ID_OPAQUE_WATER_CB, wgettext("Opaque water"));
 		}
+
+
+		// Anisotropic/mipmap/bi-/trilinear settings
+
+		{
+			core::rect<s32> rect(0, 0, option_w+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175, option_y);
+			Environment->addCheckBox(m_data->mip_map, rect, this,
+				       GUI_ID_MIPMAP_CB, wgettext("Mip-Mapping"));
+		}
+
+		{
+			core::rect<s32> rect(0, 0, option_w+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175, option_y+20);
+			Environment->addCheckBox(m_data->anisotropic_filter, rect, this,
+				       GUI_ID_ANISOTROPIC_CB, wgettext("Anisotropic Filtering"));
+		}
+
+		{
+			core::rect<s32> rect(0, 0, option_w+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175, option_y+20*2);
+			Environment->addCheckBox(m_data->bilinear_filter, rect, this,
+				       GUI_ID_BILINEAR_CB, wgettext("Bi-Linear Filtering"));
+		}
+
+		{
+			core::rect<s32> rect(0, 0, option_w+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175, option_y+20*3);
+			Environment->addCheckBox(m_data->trilinear_filter, rect, this,
+				       GUI_ID_TRILINEAR_CB, wgettext("Tri-Linear Filtering"));
+		}
+
+		// shader/on demand image loading settings
+		{
+			core::rect<s32> rect(0, 0, option_w+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175*2, option_y);
+			Environment->addCheckBox(m_data->enable_shaders, rect, this,
+					GUI_ID_SHADERS_CB, wgettext("Shaders"));
+		}
+
+		{
+			core::rect<s32> rect(0, 0, option_w+20+20, 30);
+			rect += m_topleft_client + v2s32(option_x+175*2, option_y+20);
+			Environment->addCheckBox(m_data->preload_item_visuals, rect, this,
+					GUI_ID_PRELOAD_ITEM_VISUALS_CB, wgettext("Preload item visuals"));
+		}
+
 		// Key change button
 		{
 			core::rect<s32> rect(0, 0, 120, 30);
@@ -606,11 +659,11 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 			core::rect<s32> rect(0, 0, 454, 250);
 			rect += m_topleft_client + v2s32(110, 50+35);
 			Environment->addStaticText(narrow_to_wide(
-			"Minetest-c55 " VERSION_STRING "\n"
+			"Minetest " VERSION_STRING "\n"
 			"http://minetest.net/\n"
 			"\n"
 			"by Perttu Ahola <celeron55@gmail.com>\n"
-			"and contributors: tango_, kahrl (kaaaaaahrl?), erlehmann (the hippie), SpeedProg, JacobF (sqlite worlds), teddydestodes, marktraceur, darkrose, Jonathan Neuschäfer (who the hell?), Felix Krausse (broke liquids, IIRC), sfan5... and >10 more random people."
+			"and contributors: PilzAdam, Taoki, tango_, kahrl (kaaaaaahrl?), darkrose, matttpt, erlehmann, SpeedProg, JacobF, teddydestodes, marktraceur, Jonathan Neuschäfer, thexyz, VanessaE, sfan5... and tens of more random people."
 			).c_str(), rect, false, true, this, -1);
 		}
 	}
@@ -760,6 +813,42 @@ void GUIMainMenu::readInput(MainMenuData *dst)
 			dst->opaque_water = ((gui::IGUICheckBox*)e)->isChecked();
 	}
 
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_MIPMAP_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+			dst->mip_map = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_ANISOTROPIC_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+			dst->anisotropic_filter = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_BILINEAR_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+			dst->bilinear_filter = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_TRILINEAR_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+			dst->trilinear_filter = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_SHADERS_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+		        dst->enable_shaders = ((gui::IGUICheckBox*)e)->isChecked() ? 2 : 0;
+	}
+
+	{
+		gui::IGUIElement *e = getElementFromId(GUI_ID_PRELOAD_ITEM_VISUALS_CB);
+		if(e != NULL && e->getType() == gui::EGUIET_CHECK_BOX)
+		        dst->preload_item_visuals = ((gui::IGUICheckBox*)e)->isChecked();
+	}
+
 	{
 		gui::IGUIElement *e = getElementFromId(GUI_ID_WORLD_LISTBOX);
 		if(e != NULL && e->getType() == gui::EGUIET_LIST_BOX)

src/guiMainMenu.h

@@ -41,6 +41,12 @@ struct MainMenuData
 	bool smooth_lighting;
 	bool clouds_3d;
 	bool opaque_water;
+	bool mip_map;
+	bool anisotropic_filter;
+	bool bilinear_filter;
+	bool trilinear_filter;
+	int enable_shaders;
+	bool preload_item_visuals;
 	// Server options
 	bool creative_mode;
 	bool enable_damage;

src/guiPauseMenu.cpp

@@ -169,23 +169,8 @@ void GUIPauseMenu::regenerateGui(v2u32 screensize)
 			max_texture_size = driver->getMaxTextureSize();
 		}
 
-		/*wchar_t text[200];
-		swprintf(text, 200,
-				L"Minetest-c55\n"
-				L"by Perttu Ahola\n"
-				L"celeron55@gmail.com\n\n"
-				SWPRINTF_CHARSTRING L"\n"
-				L"userdata path = "
-				SWPRINTF_CHARSTRING
-				,
-				BUILD_INFO,
-				porting::path_user.c_str()
-		);*/
-
 		std::ostringstream os;
 		os<<"Minetest\n";
-		os<<"by Perttu Ahola and contributors\n";
-		os<<"celeron55@gmail.com\n";
 		os<<BUILD_INFO<<"\n";
 		os<<"path_user = "<<wrap_rows(porting::path_user, 20)<<"\n";
 	

src/itemdef.cpp

@@ -30,7 +30,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "tile.h"
 #endif
 #include "log.h"
+#include "main.h" // g_settings
+#include "settings.h"
 #include "util/serialize.h"
+#include "util/container.h"
+#include "util/thread.h"
 #include <map>
 #include <set>
 
@@ -71,14 +75,6 @@ ItemDefinition& ItemDefinition::operator=(const ItemDefinition &def)
 	}
 	groups = def.groups;
 	node_placement_prediction = def.node_placement_prediction;
-#ifndef SERVER
-	inventory_texture = def.inventory_texture;
-	if(def.wield_mesh)
-	{
-		wield_mesh = def.wield_mesh;
-		wield_mesh->grab();
-	}
-#endif
 	return *this;
 }
 
@@ -91,10 +87,6 @@ void ItemDefinition::resetInitial()
 {
 	// Initialize pointers to NULL so reset() does not delete undefined pointers
 	tool_capabilities = NULL;
-#ifndef SERVER
-	inventory_texture = NULL;
-	wield_mesh = NULL;
-#endif
 	reset();
 }
 
@@ -117,15 +109,6 @@ void ItemDefinition::reset()
 	groups.clear();
 
 	node_placement_prediction = "";
-	
-#ifndef SERVER
-	inventory_texture = NULL;
-	if(wield_mesh)
-	{
-		wield_mesh->drop();
-		wield_mesh = NULL;
-	}
-#endif
 }
 
 void ItemDefinition::serialize(std::ostream &os) const
@@ -203,13 +186,39 @@ void ItemDefinition::deSerialize(std::istream &is)
 
 class CItemDefManager: public IWritableItemDefManager
 {
+#ifndef SERVER
+	struct ClientCached
+	{
+		video::ITexture *inventory_texture;
+		scene::IMesh *wield_mesh;
+
+		ClientCached():
+			inventory_texture(NULL),
+			wield_mesh(NULL)
+		{}
+	};
+#endif
+
 public:
 	CItemDefManager()
 	{
+#ifndef SERVER
+		m_main_thread = get_current_thread_id();
+#endif
+	
 		clear();
 	}
 	virtual ~CItemDefManager()
 	{
+#ifndef SERVER
+		const core::list<ClientCached*> &values = m_clientcached.getValues();
+		for(core::list<ClientCached*>::ConstIterator
+				i = values.begin(); i != values.end(); ++i)
+		{
+			ClientCached *cc = *i;
+			cc->wield_mesh->drop();
+		}
+#endif
 	}
 	virtual const ItemDefinition& get(const std::string &name_) const
 	{
@@ -256,6 +265,223 @@ class CItemDefManager: public IWritableItemDefManager
 		std::map<std::string, ItemDefinition*>::const_iterator i;
 		return m_item_definitions.find(name) != m_item_definitions.end();
 	}
+#ifndef SERVER
+	ClientCached* createClientCachedDirect(const std::string &name,
+			IGameDef *gamedef) const
+	{
+		infostream<<"Lazily creating item texture and mesh for \""
+				<<name<<"\""<<std::endl;
+
+		// This is not thread-safe
+		assert(get_current_thread_id() == m_main_thread);
+
+		// Skip if already in cache
+		ClientCached *cc = NULL;
+		m_clientcached.get(name, &cc);
+		if(cc)
+			return cc;
+
+		ITextureSource *tsrc = gamedef->getTextureSource();
+		INodeDefManager *nodedef = gamedef->getNodeDefManager();
+		IrrlichtDevice *device = tsrc->getDevice();
+		video::IVideoDriver *driver = device->getVideoDriver();
+		const ItemDefinition *def = &get(name);
+
+		// Create new ClientCached
+		cc = new ClientCached();
+
+		bool need_node_mesh = false;
+
+		// Create an inventory texture
+		cc->inventory_texture = NULL;
+		if(def->inventory_image != "")
+		{
+			cc->inventory_texture = tsrc->getTextureRaw(def->inventory_image);
+		}
+		else if(def->type == ITEM_NODE)
+		{
+			need_node_mesh = true;
+		}
+
+		// Create a wield mesh
+		if(cc->wield_mesh != NULL)
+		{
+			cc->wield_mesh->drop();
+			cc->wield_mesh = NULL;
+		}
+		if(def->type == ITEM_NODE && def->wield_image == "")
+		{
+			need_node_mesh = true;
+		}
+		else if(def->wield_image != "" || def->inventory_image != "")
+		{
+			// Extrude the wield image into a mesh
+
+			std::string imagename;
+			if(def->wield_image != "")
+				imagename = def->wield_image;
+			else
+				imagename = def->inventory_image;
+
+			cc->wield_mesh = createExtrudedMesh(
+					tsrc->getTextureRaw(imagename),
+					driver,
+					def->wield_scale * v3f(40.0, 40.0, 4.0));
+			if(cc->wield_mesh == NULL)
+			{
+				infostream<<"ItemDefManager: WARNING: "
+					<<"updateTexturesAndMeshes(): "
+					<<"Unable to create extruded mesh for item "
+					<<def->name<<std::endl;
+			}
+		}
+
+		if(need_node_mesh)
+		{
+			/*
+				Get node properties
+			*/
+			content_t id = nodedef->getId(def->name);
+			const ContentFeatures &f = nodedef->get(id);
+
+			u8 param1 = 0;
+			if(f.param_type == CPT_LIGHT)
+				param1 = 0xee;
+
+			/*
+				Make a mesh from the node
+			*/
+			MeshMakeData mesh_make_data(gamedef);
+			MapNode mesh_make_node(id, param1, 0);
+			mesh_make_data.fillSingleNode(&mesh_make_node);
+			MapBlockMesh mapblock_mesh(&mesh_make_data);
+
+			scene::IMesh *node_mesh = mapblock_mesh.getMesh();
+			assert(node_mesh);
+			video::SColor c(255, 255, 255, 255);
+			if(g_settings->getS32("enable_shaders") != 0)
+				c = MapBlock_LightColor(255, 0xffff, decode_light(f.light_source));
+			setMeshColor(node_mesh, c);
+
+			/*
+				Scale and translate the mesh so it's a unit cube
+				centered on the origin
+			*/
+			scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
+			translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));
+
+			/*
+				Draw node mesh into a render target texture
+			*/
+			if(cc->inventory_texture == NULL)
+			{
+				core::dimension2d<u32> dim(64,64);
+				std::string rtt_texture_name = "INVENTORY_"
+					+ def->name + "_RTT";
+				v3f camera_position(0, 1.0, -1.5);
+				camera_position.rotateXZBy(45);
+				v3f camera_lookat(0, 0, 0);
+				core::CMatrix4<f32> camera_projection_matrix;
+				// Set orthogonal projection
+				camera_projection_matrix.buildProjectionMatrixOrthoLH(
+						1.65, 1.65, 0, 100);
+
+				video::SColorf ambient_light(0.2,0.2,0.2);
+				v3f light_position(10, 100, -50);
+				video::SColorf light_color(0.5,0.5,0.5);
+				f32 light_radius = 1000;
+
+				cc->inventory_texture = generateTextureFromMesh(
+					node_mesh, device, dim, rtt_texture_name,
+					camera_position,
+					camera_lookat,
+					camera_projection_matrix,
+					ambient_light,
+					light_position,
+					light_color,
+					light_radius);
+
+				// render-to-target didn't work
+				if(cc->inventory_texture == NULL)
+				{
+					cc->inventory_texture =
+						tsrc->getTextureRaw(f.tiledef[0].name);
+				}
+			}
+
+			/*
+				Use the node mesh as the wield mesh
+			*/
+			if(cc->wield_mesh == NULL)
+			{
+				// Scale to proper wield mesh proportions
+				scaleMesh(node_mesh, v3f(30.0, 30.0, 30.0)
+						* def->wield_scale);
+				cc->wield_mesh = node_mesh;
+				cc->wield_mesh->grab();
+			}
+
+			// falling outside of here deletes node_mesh
+		}
+
+		// Put in cache
+		m_clientcached.set(name, cc);
+
+		return cc;
+	}
+	ClientCached* getClientCached(const std::string &name,
+			IGameDef *gamedef) const
+	{
+		ClientCached *cc = NULL;
+		m_clientcached.get(name, &cc);
+		if(cc)
+			return cc;
+
+		if(get_current_thread_id() == m_main_thread)
+		{
+			return createClientCachedDirect(name, gamedef);
+		}
+		else
+		{
+			// We're gonna ask the result to be put into here
+			ResultQueue<std::string, ClientCached*, u8, u8> result_queue;
+			// Throw a request in
+			m_get_clientcached_queue.add(name, 0, 0, &result_queue);
+			try{
+				// Wait result for a second
+				GetResult<std::string, ClientCached*, u8, u8>
+						result = result_queue.pop_front(1000);
+				// Check that at least something worked OK
+				assert(result.key == name);
+				// Return it
+				return result.item;
+			}
+			catch(ItemNotFoundException &e)
+			{
+				errorstream<<"Waiting for clientcached timed out."<<std::endl;
+				return &m_dummy_clientcached;
+			}
+		}
+	}
+	// Get item inventory texture
+	virtual video::ITexture* getInventoryTexture(const std::string &name,
+			IGameDef *gamedef) const
+	{
+		ClientCached *cc = getClientCached(name, gamedef);
+		if(!cc)
+			return NULL;
+		return cc->inventory_texture;
+	}
+	// Get item wield mesh
+	virtual scene::IMesh* getWieldMesh(const std::string &name,
+			IGameDef *gamedef) const
+	{
+		ClientCached *cc = getClientCached(name, gamedef);
+		if(!cc)
+			return NULL;
+		return cc->wield_mesh;
+	}
+#endif
 	void clear()
 	{
 		for(std::map<std::string, ItemDefinition*>::const_iterator
@@ -321,157 +547,6 @@ class CItemDefManager: public IWritableItemDefManager
 			m_aliases[name] = convert_to;
 		}
 	}
-
-	virtual void updateTexturesAndMeshes(IGameDef *gamedef)
-	{
-#ifndef SERVER
-		infostream<<"ItemDefManager::updateTexturesAndMeshes(): Updating "
-				<<"textures and meshes in item definitions"<<std::endl;
-
-		ITextureSource *tsrc = gamedef->getTextureSource();
-		INodeDefManager *nodedef = gamedef->getNodeDefManager();
-		IrrlichtDevice *device = tsrc->getDevice();
-		video::IVideoDriver *driver = device->getVideoDriver();
-
-		for(std::map<std::string, ItemDefinition*>::iterator
-				i = m_item_definitions.begin();
-				i != m_item_definitions.end(); i++)
-		{
-			ItemDefinition *def = i->second;
-
-			bool need_node_mesh = false;
-
-			// Create an inventory texture
-			def->inventory_texture = NULL;
-			if(def->inventory_image != "")
-			{
-				def->inventory_texture = tsrc->getTextureRaw(def->inventory_image);
-			}
-			else if(def->type == ITEM_NODE)
-			{
-				need_node_mesh = true;
-			}
-
-			// Create a wield mesh
-			if(def->wield_mesh != NULL)
-			{
-				def->wield_mesh->drop();
-				def->wield_mesh = NULL;
-			}
-			if(def->type == ITEM_NODE && def->wield_image == "")
-			{
-				need_node_mesh = true;
-			}
-			else if(def->wield_image != "" || def->inventory_image != "")
-			{
-				// Extrude the wield image into a mesh
-
-				std::string imagename;
-				if(def->wield_image != "")
-					imagename = def->wield_image;
-				else
-					imagename = def->inventory_image;
-
-				def->wield_mesh = createExtrudedMesh(
-						tsrc->getTextureRaw(imagename),
-						driver,
-						def->wield_scale * v3f(40.0, 40.0, 4.0));
-				if(def->wield_mesh == NULL)
-				{
-					infostream<<"ItemDefManager: WARNING: "
-						<<"updateTexturesAndMeshes(): "
-						<<"Unable to create extruded mesh for item "
-						<<def->name<<std::endl;
-				}
-			}
-
-			if(need_node_mesh)
-			{
-				/*
-					Get node properties
-				*/
-				content_t id = nodedef->getId(def->name);
-				const ContentFeatures &f = nodedef->get(id);
-
-				u8 param1 = 0;
-				if(f.param_type == CPT_LIGHT)
-					param1 = 0xee;
-
-				/*
-				 	Make a mesh from the node
-				*/
-				MeshMakeData mesh_make_data(gamedef);
-				MapNode mesh_make_node(id, param1, 0);
-				mesh_make_data.fillSingleNode(&mesh_make_node);
-				MapBlockMesh mapblock_mesh(&mesh_make_data);
-
-				scene::IMesh *node_mesh = mapblock_mesh.getMesh();
-				assert(node_mesh);
-				setMeshColor(node_mesh, video::SColor(255, 255, 255, 255));
-
-				/*
-					Scale and translate the mesh so it's a unit cube
-					centered on the origin
-				*/
-				scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
-				translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));
-
-				/*
-					Draw node mesh into a render target texture
-				*/
-				if(def->inventory_texture == NULL)
-				{
-					core::dimension2d<u32> dim(64,64);
-					std::string rtt_texture_name = "INVENTORY_"
-						+ def->name + "_RTT";
-					v3f camera_position(0, 1.0, -1.5);
-					camera_position.rotateXZBy(45);
-					v3f camera_lookat(0, 0, 0);
-					core::CMatrix4<f32> camera_projection_matrix;
-					// Set orthogonal projection
-					camera_projection_matrix.buildProjectionMatrixOrthoLH(
-							1.65, 1.65, 0, 100);
-
-					video::SColorf ambient_light(0.2,0.2,0.2);
-					v3f light_position(10, 100, -50);
-					video::SColorf light_color(0.5,0.5,0.5);
-					f32 light_radius = 1000;
-
-					def->inventory_texture = generateTextureFromMesh(
-						node_mesh, device, dim, rtt_texture_name,
-						camera_position,
-						camera_lookat,
-						camera_projection_matrix,
-						ambient_light,
-						light_position,
-						light_color,
-						light_radius);
-
-					// render-to-target didn't work
-					if(def->inventory_texture == NULL)
-					{
-						def->inventory_texture =
-							tsrc->getTextureRaw(f.tiledef[0].name);
-					}
-				}
-
-				/*
-					Use the node mesh as the wield mesh
-				*/
-				if(def->wield_mesh == NULL)
-				{
-					// Scale to proper wield mesh proportions
-					scaleMesh(node_mesh, v3f(30.0, 30.0, 30.0)
-							* def->wield_scale);
-					def->wield_mesh = node_mesh;
-					def->wield_mesh->grab();
-				}
-
-				// falling outside of here deletes node_mesh
-			}
-		}
-#endif
-	}
 	void serialize(std::ostream &os)
 	{
 		writeU8(os, 0); // version
@@ -521,11 +596,37 @@ class CItemDefManager: public IWritableItemDefManager
 			registerAlias(name, convert_to);
 		}
 	}
+	void processQueue(IGameDef *gamedef)
+	{
+#ifndef SERVER
+		while(m_get_clientcached_queue.size() > 0)
+		{
+			GetRequest<std::string, ClientCached*, u8, u8>
+					request = m_get_clientcached_queue.pop();
+			GetResult<std::string, ClientCached*, u8, u8>
+					result;
+			result.key = request.key;
+			result.callers = request.callers;
+			result.item = createClientCachedDirect(request.key, gamedef);
+			request.dest->push_back(result);
+		}
+#endif
+	}
 private:
 	// Key is name
 	std::map<std::string, ItemDefinition*> m_item_definitions;
 	// Aliases
 	std::map<std::string, std::string> m_aliases;
+#ifndef SERVER
+	// The id of the thread that is allowed to use irrlicht directly
+	threadid_t m_main_thread;
+	// A reference to this can be returned when nothing is found, to avoid NULLs
+	mutable ClientCached m_dummy_clientcached;
+	// Cached textures and meshes
+	mutable MutexedMap<std::string, ClientCached*> m_clientcached;
+	// Queued clientcached fetches (to be processed by the main thread)
+	mutable RequestQueue<std::string, ClientCached*, u8, u8> m_get_clientcached_queue;
+#endif
 };
 
 IWritableItemDefManager* createItemDefManager()

src/itemdef.h

@@ -72,14 +72,6 @@ struct ItemDefinition
 	// "" = no prediction
 	std::string node_placement_prediction;
 
-	/*
-		Cached stuff
-	*/
-#ifndef SERVER
-	video::ITexture *inventory_texture;
-	scene::IMesh *wield_mesh;
-#endif
-
 	/*
 		Some helpful methods
 	*/
@@ -108,6 +100,14 @@ class IItemDefManager
 	virtual std::set<std::string> getAll() const=0;
 	// Check if item is known
 	virtual bool isKnown(const std::string &name) const=0;
+#ifndef SERVER
+	// Get item inventory texture
+	virtual video::ITexture* getInventoryTexture(const std::string &name,
+			IGameDef *gamedef) const=0;
+	// Get item wield mesh
+	virtual scene::IMesh* getWieldMesh(const std::string &name,
+		IGameDef *gamedef) const=0;
+#endif
 
 	virtual void serialize(std::ostream &os)=0;
 };
@@ -126,6 +126,14 @@ class IWritableItemDefManager : public IItemDefManager
 	virtual std::set<std::string> getAll() const=0;
 	// Check if item is known
 	virtual bool isKnown(const std::string &name) const=0;
+#ifndef SERVER
+	// Get item inventory texture
+	virtual video::ITexture* getInventoryTexture(const std::string &name,
+			IGameDef *gamedef) const=0;
+	// Get item wield mesh
+	virtual scene::IMesh* getWieldMesh(const std::string &name,
+		IGameDef *gamedef) const=0;
+#endif
 
 	// Remove all registered item and node definitions and aliases
 	// Then re-add the builtin item definitions
@@ -138,15 +146,11 @@ class IWritableItemDefManager : public IItemDefManager
 	virtual void registerAlias(const std::string &name,
 			const std::string &convert_to)=0;
 
-	/*
-		Update inventory textures and wield meshes to latest
-		return values of ITextureSource and INodeDefManager.
-		Call after updating the texture atlas of a texture source.
-	*/
-	virtual void updateTexturesAndMeshes(IGameDef *gamedef)=0;
-
 	virtual void serialize(std::ostream &os)=0;
 	virtual void deSerialize(std::istream &is)=0;
+
+	// Do stuff asked by threads that can only be done in the main thread
+	virtual void processQueue(IGameDef *gamedef)=0;
 };
 
 IWritableItemDefManager* createItemDefManager();

src/light.h

@@ -85,6 +85,24 @@ inline u8 decode_light(u8 light)
 	return light_decode_table[light];
 }
 
+// 0.0 <= light <= 1.0
+// 0.0 <= return value <= 1.0
+inline float decode_light_f(float light_f)
+{
+	s32 i = (u32)(light_f * LIGHT_MAX + 0.5);
+
+	if(i <= 0)
+		return (float)light_decode_table[0] / 255.0;
+	if(i >= LIGHT_MAX)
+		return (float)light_decode_table[LIGHT_MAX] / 255.0;
+
+	float v1 = (float)light_decode_table[i-1] / 255.0;
+	float v2 = (float)light_decode_table[i] / 255.0;
+	float f0 = (float)i - 0.5;
+	float f = light_f * LIGHT_MAX - f0;
+	return f * v2 + (1.0 - f) * v1;
+}
+
 // 0 <= daylight_factor <= 1000
 // 0 <= lightday, lightnight <= LIGHT_SUN
 // 0 <= return value <= LIGHT_SUN
@@ -97,5 +115,15 @@ inline u8 blend_light(u32 daylight_factor, u8 lightday, u8 lightnight)
 	return l;
 }
 
+// 0.0 <= daylight_factor <= 1.0
+// 0 <= lightday, lightnight <= LIGHT_SUN
+// 0 <= return value <= 255
+inline u8 blend_light_f1(float daylight_factor, u8 lightday, u8 lightnight)
+{
+	u8 l = ((daylight_factor * decode_light(lightday) +
+			(1.0-daylight_factor) * decode_light(lightnight)));
+	return l;
+}
+
 #endif
 

src/localplayer.cpp

@@ -34,6 +34,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 	Player(gamedef),
+	isAttached(false),
+	overridePosition(v3f(0,0,0)),
+	last_position(v3f(0,0,0)),
+	last_speed(v3f(0,0,0)),
+	last_pitch(0),
+	last_yaw(0),
+	last_keyPressed(0),
 	m_sneak_node(32767,32767,32767),
 	m_sneak_node_exists(false),
 	m_old_node_below(32767,32767,32767),
@@ -59,6 +66,13 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 
 	v3f old_speed = m_speed;
 
+	// Copy parent position if local player is attached
+	if(isAttached)
+	{
+		setPosition(overridePosition);
+		return;
+	}
+
 	// Skip collision detection if a special movement mode is used
 	bool fly_allowed = m_gamedef->checkLocalPrivilege("fly");
 	bool free_move = fly_allowed && g_settings->getBool("free_move");
@@ -314,7 +328,7 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 		v3s16 camera_np = floatToInt(getEyePosition(), BS);
 		MapNode n = map.getNodeNoEx(camera_np);
 		if(n.getContent() != CONTENT_IGNORE){
-			if(nodemgr->get(n).walkable){
+			if(nodemgr->get(n).walkable && nodemgr->get(n).solidness == 2){
 				camera_barely_in_ceiling = true;
 			}
 		}
@@ -352,7 +366,14 @@ void LocalPlayer::applyControl(float dtime)
 	
 	setPitch(control.pitch);
 	setYaw(control.yaw);
-	
+
+	// Nullify speed and don't run positioning code if the player is attached
+	if(isAttached)
+	{
+		setSpeed(v3f(0,0,0));
+		return;
+	}
+
 	v3f move_direction = v3f(0,0,1);
 	move_direction.rotateXZBy(getYaw());
 	

src/localplayer.h

@@ -22,53 +22,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "player.h"
 
-struct PlayerControl
-{
-	PlayerControl()
-	{
-		up = false;
-		down = false;
-		left = false;
-		right = false;
-		jump = false;
-		aux1 = false;
-		sneak = false;
-		pitch = 0;
-		yaw = 0;
-	}
-	PlayerControl(
-		bool a_up,
-		bool a_down,
-		bool a_left,
-		bool a_right,
-		bool a_jump,
-		bool a_aux1,
-		bool a_sneak,
-		float a_pitch,
-		float a_yaw
-	)
-	{
-		up = a_up;
-		down = a_down;
-		left = a_left;
-		right = a_right;
-		jump = a_jump;
-		aux1 = a_aux1;
-		sneak = a_sneak;
-		pitch = a_pitch;
-		yaw = a_yaw;
-	}
-	bool up;
-	bool down;
-	bool left;
-	bool right;
-	bool jump;
-	bool aux1;
-	bool sneak;
-	float pitch;
-	float yaw;
-};
-
 class LocalPlayer : public Player
 {
 public:
@@ -79,6 +32,10 @@ class LocalPlayer : public Player
 	{
 		return true;
 	}
+
+	bool isAttached;
+
+	v3f overridePosition;
 	
 	void move(f32 dtime, Map &map, f32 pos_max_d,
 			core::list<CollisionInfo> *collision_info);
@@ -87,8 +44,13 @@ class LocalPlayer : public Player
 	void applyControl(float dtime);
 
 	v3s16 getStandingNodePos();
-	
-	PlayerControl control;
+
+	// Used to check if anything changed and prevent sending packets if not
+	v3f last_position;
+	v3f last_speed;
+	float last_pitch;
+	float last_yaw;
+	unsigned int last_keyPressed;
 
 private:
 	// This is used for determining the sneaking range

src/main.cpp

@@ -1292,9 +1292,6 @@ int main(int argc, char *argv[])
 
 	video::IVideoDriver* driver = device->getVideoDriver();
 
-	// Disable mipmaps (because some of them look ugly)
-	driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, false);
-
 	/*
 		This changes the minimum allowed number of vertices in a VBO.
 		Default is 500.
@@ -1352,7 +1349,13 @@ int main(int argc, char *argv[])
 	skin->setColor(gui::EGDC_3D_SHADOW, video::SColor(255,0,0,0));
 	skin->setColor(gui::EGDC_HIGH_LIGHT, video::SColor(255,70,100,50));
 	skin->setColor(gui::EGDC_HIGH_LIGHT_TEXT, video::SColor(255,255,255,255));
-	
+
+#if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
+	// Irrlicht 1.8 input colours
+	skin->setColor(gui::EGDC_EDITABLE, video::SColor(255,128,128,128));
+	skin->setColor(gui::EGDC_FOCUSED_EDITABLE, video::SColor(255,96,134,49));
+#endif
+
 	/*
 		GUI stuff
 	*/
@@ -1439,6 +1442,13 @@ int main(int argc, char *argv[])
 				menudata.smooth_lighting = g_settings->getBool("smooth_lighting");
 				menudata.clouds_3d = g_settings->getBool("enable_3d_clouds");
 				menudata.opaque_water = g_settings->getBool("opaque_water");
+				menudata.mip_map = g_settings->getBool("mip_map");
+				menudata.anisotropic_filter = g_settings->getBool("anisotropic_filter");
+				menudata.bilinear_filter = g_settings->getBool("bilinear_filter");
+				menudata.trilinear_filter = g_settings->getBool("trilinear_filter");
+				menudata.enable_shaders = g_settings->getS32("enable_shaders");
+				menudata.preload_item_visuals = g_settings->getBool("preload_item_visuals");
+				driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, menudata.mip_map);
 				menudata.creative_mode = g_settings->getBool("creative_mode");
 				menudata.enable_damage = g_settings->getBool("enable_damage");
 				// Default to selecting nothing
@@ -1552,6 +1562,15 @@ int main(int argc, char *argv[])
 				g_settings->set("smooth_lighting", itos(menudata.smooth_lighting));
 				g_settings->set("enable_3d_clouds", itos(menudata.clouds_3d));
 				g_settings->set("opaque_water", itos(menudata.opaque_water));
+
+				g_settings->set("mip_map", itos(menudata.mip_map));
+				g_settings->set("anisotropic_filter", itos(menudata.anisotropic_filter));
+				g_settings->set("bilinear_filter", itos(menudata.bilinear_filter));
+				g_settings->set("trilinear_filter", itos(menudata.trilinear_filter));
+
+				g_settings->setS32("enable_shaders", menudata.enable_shaders);
+				g_settings->set("preload_item_visuals", itos(menudata.preload_item_visuals));
+
 				g_settings->set("creative_mode", itos(menudata.creative_mode));
 				g_settings->set("enable_damage", itos(menudata.enable_damage));
 				g_settings->set("name", playername);

src/map.cpp

@@ -1746,12 +1746,12 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 		content_t new_node_content;
 		s8 new_node_level = -1;
 		s8 max_node_level = -1;
-		if (num_sources >= 2 || liquid_type == LIQUID_SOURCE) {
+		if ((num_sources >= 2 && nodemgr->get(liquid_kind).liquid_renewable) || liquid_type == LIQUID_SOURCE) {
 			// liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
 			// or the flowing alternative of the first of the surrounding sources (if it's air), so
 			// it's perfectly safe to use liquid_kind here to determine the new node content.
 			new_node_content = nodemgr->getId(nodemgr->get(liquid_kind).liquid_alternative_source);
-		} else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) {
+		} else if (num_sources >= 1 && sources[0].t != NEIGHBOR_LOWER) {
 			// liquid_kind is set properly, see above
 			new_node_content = liquid_kind;
 			max_node_level = new_node_level = LIQUID_LEVEL_MAX;

src/mapblock.cpp

@@ -35,6 +35,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mapblock_mesh.h"
 #endif
 #include "util/string.h"
+#include "util/serialize.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 

src/mapblock_mesh.cpp

@@ -28,9 +28,20 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mesh.h"
 #include "content_mapblock.h"
 #include "noise.h"
+#include "shader.h"
 #include "settings.h"
 #include "util/directiontables.h"
 
+float srgb_linear_multiply(float f, float m, float max)
+{
+	f = f * f; // SRGB -> Linear
+	f *= m;
+	f = sqrt(f); // Linear -> SRGB
+	if(f > max)
+		f = max;
+	return f;
+}
+
 /*
 	MeshMakeData
 */
@@ -77,9 +88,9 @@ void MeshMakeData::fill(MapBlock *block)
 		// Get map
 		Map *map = block->getParent();
 
-		for(u16 i=0; i<6; i++)
+		for(u16 i=0; i<26; i++)
 		{
-			const v3s16 &dir = g_6dirs[i];
+			const v3s16 &dir = g_26dirs[i];
 			v3s16 bp = m_blockpos + dir;
 			MapBlock *b = map->getBlockNoCreateNoEx(bp);
 			if(b)
@@ -434,7 +445,7 @@ struct FastFace
 };
 
 static void makeFastFace(TileSpec tile, u16 li0, u16 li1, u16 li2, u16 li3,
-		v3f p, v3s16 dir, v3f scale, core::array<FastFace> &dest)
+		v3f p, v3s16 dir, v3f scale, u8 light_source, core::array<FastFace> &dest)
 {
 	FastFace face;
 	
@@ -476,16 +487,16 @@ static void makeFastFace(TileSpec tile, u16 li0, u16 li1, u16 li2, u16 li3,
 	float h = tile.texture.size.Y;
 
 	face.vertices[0] = video::S3DVertex(vertex_pos[0], normal,
-			MapBlock_LightColor(alpha, li0),
+			MapBlock_LightColor(alpha, li0, light_source),
 			core::vector2d<f32>(x0+w*abs_scale, y0+h));
 	face.vertices[1] = video::S3DVertex(vertex_pos[1], normal,
-			MapBlock_LightColor(alpha, li1),
+			MapBlock_LightColor(alpha, li1, light_source),
 			core::vector2d<f32>(x0, y0+h));
 	face.vertices[2] = video::S3DVertex(vertex_pos[2], normal,
-			MapBlock_LightColor(alpha, li2),
+			MapBlock_LightColor(alpha, li2, light_source),
 			core::vector2d<f32>(x0, y0));
 	face.vertices[3] = video::S3DVertex(vertex_pos[3], normal,
-			MapBlock_LightColor(alpha, li3),
+			MapBlock_LightColor(alpha, li3, light_source),
 			core::vector2d<f32>(x0+w*abs_scale, y0));
 
 	face.tile = tile;
@@ -657,7 +668,8 @@ static void getTileInfo(
 		v3s16 &p_corrected,
 		v3s16 &face_dir_corrected,
 		u16 *lights,
-		TileSpec &tile
+		TileSpec &tile,
+		u8 &light_source
 	)
 {
 	VoxelManipulator &vmanip = data->m_vmanip;
@@ -687,18 +699,20 @@ static void getTileInfo(
 		tile = tile0;
 		p_corrected = p;
 		face_dir_corrected = face_dir;
+		light_source = ndef->get(n0).light_source;
 	}
 	else
 	{
 		tile = tile1;
 		p_corrected = p + face_dir;
 		face_dir_corrected = -face_dir;
+		light_source = ndef->get(n1).light_source;
 	}
 	
 	// eg. water and glass
 	if(equivalent)
 		tile.material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
-	
+
 	if(data->m_smooth_lighting == false)
 	{
 		lights[0] = lights[1] = lights[2] = lights[3] =
@@ -742,9 +756,10 @@ static void updateFastFaceRow(
 	v3s16 face_dir_corrected;
 	u16 lights[4] = {0,0,0,0};
 	TileSpec tile;
+	u8 light_source = 0;
 	getTileInfo(data, p, face_dir, 
 			makes_face, p_corrected, face_dir_corrected,
-			lights, tile);
+			lights, tile, light_source);
 
 	for(u16 j=0; j<MAP_BLOCKSIZE; j++)
 	{
@@ -758,6 +773,7 @@ static void updateFastFaceRow(
 		v3s16 next_face_dir_corrected;
 		u16 next_lights[4] = {0,0,0,0};
 		TileSpec next_tile;
+		u8 next_light_source = 0;
 		
 		// If at last position, there is nothing to compare to and
 		// the face must be drawn anyway
@@ -768,7 +784,7 @@ static void updateFastFaceRow(
 			getTileInfo(data, p_next, face_dir,
 					next_makes_face, next_p_corrected,
 					next_face_dir_corrected, next_lights,
-					next_tile);
+					next_tile, next_light_source);
 			
 			if(next_makes_face == makes_face
 					&& next_p_corrected == p_corrected + translate_dir
@@ -777,7 +793,8 @@ static void updateFastFaceRow(
 					&& next_lights[1] == lights[1]
 					&& next_lights[2] == lights[2]
 					&& next_lights[3] == lights[3]
-					&& next_tile == tile)
+					&& next_tile == tile
+					&& next_light_source == light_source)
 			{
 				next_is_different = false;
 			}
@@ -853,7 +870,7 @@ static void updateFastFaceRow(
 				}
 				
 				makeFastFace(tile, lights[0], lights[1], lights[2], lights[3],
-						sp, face_dir_corrected, scale,
+						sp, face_dir_corrected, scale, light_source,
 						dest);
 				
 				g_profiler->avg("Meshgen: faces drawn by tiling", 0);
@@ -872,6 +889,7 @@ static void updateFastFaceRow(
 			lights[2] = next_lights[2];
 			lights[3] = next_lights[3];
 			tile = next_tile;
+			light_source = next_light_source;
 		}
 		
 		p = p_next;
@@ -1011,6 +1029,11 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data):
 		Convert MeshCollector to SMesh
 		Also store animation info
 	*/
+	bool enable_shaders = (g_settings->getS32("enable_shaders") > 0);
+	video::E_MATERIAL_TYPE shadermat1 = m_gamedef->getShaderSource()->
+			getShader("test_shader_1").material;
+	video::E_MATERIAL_TYPE shadermat2 = m_gamedef->getShaderSource()->
+			getShader("test_shader_2").material;
 	for(u32 i = 0; i < collector.prebuffers.size(); i++)
 	{
 		PreMeshBuffer &p = collector.prebuffers[i];
@@ -1052,18 +1075,28 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data):
 			os<<"^[verticalframe:"<<(int)p.tile.animation_frame_count<<":0";
 			p.tile.texture = tsrc->getTexture(os.str());
 		}
-		// - Lighting
-		for(u32 j = 0; j < p.vertices.size(); j++)
+		// - Classic lighting (shaders handle this by themselves)
+		if(!enable_shaders)
 		{
-			video::SColor &vc = p.vertices[j].Color;
-			u8 day = vc.getRed();
-			u8 night = vc.getGreen();
-			finalColorBlend(vc, day, night, 1000);
-			if(day != night)
-				m_daynight_diffs[i][j] = std::make_pair(day, night);
+			for(u32 j = 0; j < p.vertices.size(); j++)
+			{
+				video::SColor &vc = p.vertices[j].Color;
+				// Set initial real color and store for later updates
+				u8 day = vc.getRed();
+				u8 night = vc.getGreen();
+				finalColorBlend(vc, day, night, 1000);
+				if(day != night)
+					m_daynight_diffs[i][j] = std::make_pair(day, night);
+				// Brighten topside (no shaders)
+				if(p.vertices[j].Normal.Y > 0.5)
+				{
+					vc.setRed  (srgb_linear_multiply(vc.getRed(),   1.3, 255.0));
+					vc.setGreen(srgb_linear_multiply(vc.getGreen(), 1.3, 255.0));
+					vc.setBlue (srgb_linear_multiply(vc.getBlue(),  1.3, 255.0));
+				}
+			}
 		}
 
-
 		// Create material
 		video::SMaterial material;
 		material.setFlag(video::EMF_LIGHTING, false);
@@ -1075,7 +1108,10 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data):
 		material.MaterialType
 				= video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 		material.setTexture(0, p.tile.texture.atlas);
-		p.tile.applyMaterialOptions(material);
+		if(enable_shaders)
+			p.tile.applyMaterialOptionsWithShaders(material, shadermat1, shadermat2);
+		else
+			p.tile.applyMaterialOptions(material);
 
 		// Create meshbuffer
 
@@ -1211,6 +1247,14 @@ bool MapBlockMesh::animate(bool faraway, float time, int crack, u32 daynight_rat
 				u8 night = j->second.second;
 				finalColorBlend(vertices[vertexIndex].Color,
 						day, night, daynight_ratio);
+				// Brighten topside (no shaders)
+				if(vertices[vertexIndex].Normal.Y > 0.5)
+				{
+					video::SColor &vc = vertices[vertexIndex].Color;
+					vc.setRed  (srgb_linear_multiply(vc.getRed(),   1.3, 255.0));
+					vc.setGreen(srgb_linear_multiply(vc.getGreen(), 1.3, 255.0));
+					vc.setBlue (srgb_linear_multiply(vc.getBlue(),  1.3, 255.0));
+				}
 			}
 		}
 		m_last_daynight_ratio = daynight_ratio;

src/mapblock_mesh.h

@@ -160,9 +160,10 @@ struct MeshCollector
 //   alpha in the A channel of the returned SColor
 //   day light (0-255) in the R channel of the returned SColor
 //   night light (0-255) in the G channel of the returned SColor
-inline video::SColor MapBlock_LightColor(u8 alpha, u16 light)
+//   light source (0-255) in the B channel of the returned SColor
+inline video::SColor MapBlock_LightColor(u8 alpha, u16 light, u8 light_source=0)
 {
-	return video::SColor(alpha, (light & 0xff), (light >> 8), 0);
+	return video::SColor(alpha, (light & 0xff), (light >> 8), light_source);
 }
 
 // Compute light at node

src/mapgen.cpp

@@ -132,7 +132,8 @@ void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
 	for(s16 ii=0; ii<trunk_h; ii++)
 	{
 		if(vmanip.m_area.contains(p1))
-			vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
+			if(ii == 0 || vmanip.getNodeNoExNoEmerge(p1).getContent() == CONTENT_AIR)
+				vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
 		p1.Y++;
 	}
 
@@ -1228,7 +1229,7 @@ double base_rock_level_2d(u64 seed, v2s16 p)
 			0.5+(float)p.X/125., 0.5+(float)p.Y/125.,
 			seed-932, 5, 0.7);
 	b = rangelim(b, 0.0, 1000.0);
-	b = pow(b, 7);
+	b = b*b*b*b*b*b*b;
 	b *= 5;
 	b = rangelim(b, 0.5, 1000.0);
 	// Values 1.5...100 give quite horrible looking slopes

src/mapnode.h

@@ -163,6 +163,16 @@ struct MapNode
 		return blend_light(daylight_factor, lightday, lightnight);
 	}
 
+	// 0.0 <= daylight_factor <= 1.0
+	// 0 <= return value <= LIGHT_SUN
+	u8 getLightBlendF1(float daylight_factor, INodeDefManager *nodemgr) const
+	{
+		u8 lightday = 0;
+		u8 lightnight = 0;
+		getLightBanks(lightday, lightnight, nodemgr);
+		return blend_light_f1(daylight_factor, lightday, lightnight);
+	}
+
 	u8 getFaceDir(INodeDefManager *nodemgr) const;
 	u8 getWallMounted(INodeDefManager *nodemgr) const;
 	v3s16 getWallMountedDir(INodeDefManager *nodemgr) const;

src/mesh.cpp

@@ -443,7 +443,7 @@ video::ITexture *generateTextureFromMesh(scene::IMesh *mesh,
 	}
 
 	// Set render target
-	driver->setRenderTarget(rtt, true, true, video::SColor(0,0,0,0));
+	driver->setRenderTarget(rtt, false, true, video::SColor(0,0,0,0));
 
 	// Get a scene manager
 	scene::ISceneManager *smgr_main = device->getSceneManager();
@@ -478,7 +478,7 @@ video::ITexture *generateTextureFromMesh(scene::IMesh *mesh,
 	smgr->drop();
 
 	// Unset render target
-	driver->setRenderTarget(0, true, true, 0);
+	driver->setRenderTarget(0, false, true, 0);
 
 	return rtt;
 }

src/mods.cpp

@@ -39,6 +39,10 @@ static void collectMods(const std::string &modspath,
 		if(!dirlist[j].dir)
 			continue;
 		std::string modname = dirlist[j].name;
+		// Ignore all directories beginning with a ".", especially
+		// VCS directories like ".git" or ".svn"
+		if(modname[0] == '.')
+			continue;
 		std::string modpath = modspath + DIR_DELIM + modname;
 		TRACESTREAM(<<indentation<<"collectMods: "<<modname<<" at \""<<modpath<<"\""<<std::endl);
 		// Handle modpacks (defined by containing modpack.txt)

src/nodedef.cpp

@@ -203,6 +203,7 @@ void ContentFeatures::reset()
 	liquid_alternative_flowing = "";
 	liquid_alternative_source = "";
 	liquid_viscosity = 0;
+	liquid_renewable = true;
 	light_source = 0;
 	damage_per_second = 0;
 	node_box = NodeBox();
@@ -214,9 +215,14 @@ void ContentFeatures::reset()
 	sound_dug = SimpleSoundSpec();
 }
 
-void ContentFeatures::serialize(std::ostream &os)
+void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 {
-	writeU8(os, 5); // version
+	if(protocol_version < 14){
+		serializeOld(os, protocol_version);
+		return;
+	}
+
+	writeU8(os, 6); // version
 	os<<serializeString(name);
 	writeU16(os, groups.size());
 	for(ItemGroupList::const_iterator
@@ -253,6 +259,7 @@ void ContentFeatures::serialize(std::ostream &os)
 	os<<serializeString(liquid_alternative_flowing);
 	os<<serializeString(liquid_alternative_source);
 	writeU8(os, liquid_viscosity);
+	writeU8(os, liquid_renewable);
 	writeU8(os, light_source);
 	writeU32(os, damage_per_second);
 	node_box.serialize(os);
@@ -262,13 +269,18 @@ void ContentFeatures::serialize(std::ostream &os)
 	serializeSimpleSoundSpec(sound_footstep, os);
 	serializeSimpleSoundSpec(sound_dig, os);
 	serializeSimpleSoundSpec(sound_dug, os);
+	// Stuff below should be moved to correct place in a version that otherwise changes
+	// the protocol version
 }
 
 void ContentFeatures::deSerialize(std::istream &is)
 {
 	int version = readU8(is);
-	if(version != 5)
-		throw SerializationError("unsupported ContentFeatures version");
+	if(version != 6){
+		deSerializeOld(is, version);
+		return;
+	}
+
 	name = deSerializeString(is);
 	groups.clear();
 	u32 groups_size = readU16(is);
@@ -307,6 +319,7 @@ void ContentFeatures::deSerialize(std::istream &is)
 	liquid_alternative_flowing = deSerializeString(is);
 	liquid_alternative_source = deSerializeString(is);
 	liquid_viscosity = readU8(is);
+	liquid_renewable = readU8(is);
 	light_source = readU8(is);
 	damage_per_second = readU32(is);
 	node_box.deSerialize(is);
@@ -319,6 +332,8 @@ void ContentFeatures::deSerialize(std::istream &is)
 	// If you add anything here, insert it primarily inside the try-catch
 	// block to not need to increase the version.
 	try{
+		// Stuff below should be moved to correct place in a version that
+		// otherwise changes the protocol version
 	}catch(SerializationError &e) {};
 }
 
@@ -540,6 +555,7 @@ class CNodeDefManager: public IWritableNodeDefManager
 					tiledef[j].name = "unknown_block.png";
 			}
 
+			bool is_liquid = false;
 			switch(f->drawtype){
 			default:
 			case NDT_NORMAL:
@@ -558,12 +574,14 @@ class CNodeDefManager: public IWritableNodeDefManager
 					f->solidness = 1;
 					f->backface_culling = false;
 				}
+				is_liquid = true;
 				break;
 			case NDT_FLOWINGLIQUID:
 				assert(f->liquid_type == LIQUID_FLOWING);
 				f->solidness = 0;
 				if(opaque_water)
 					f->alpha = 255;
+				is_liquid = true;
 				break;
 			case NDT_GLASSLIKE:
 				f->solidness = 0;
@@ -596,16 +614,24 @@ class CNodeDefManager: public IWritableNodeDefManager
 				break;
 			}
 
+			u8 material_type = 0;
+			if(is_liquid){
+				if(f->alpha == 255)
+					material_type = TILE_MATERIAL_LIQUID_OPAQUE;
+				else
+					material_type = TILE_MATERIAL_LIQUID_TRANSPARENT;
+			} else{
+				material_type = TILE_MATERIAL_BASIC;
+			}
+
 			// Tiles (fill in f->tiles[])
 			for(u16 j=0; j<6; j++){
 				// Texture
 				f->tiles[j].texture = tsrc->getTexture(tiledef[j].name);
 				// Alpha
 				f->tiles[j].alpha = f->alpha;
-				if(f->alpha == 255)
-					f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
-				else
-					f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
+				// Material type
+				f->tiles[j].material_type = material_type;
 				// Material flags
 				f->tiles[j].material_flags = 0;
 				if(f->backface_culling)
@@ -646,10 +672,8 @@ class CNodeDefManager: public IWritableNodeDefManager
 						tsrc->getTexture(f->tiledef_special[j].name);
 				// Alpha
 				f->special_tiles[j].alpha = f->alpha;
-				if(f->alpha == 255)
-					f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
-				else
-					f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
+				// Material type
+				f->special_tiles[j].material_type = material_type;
 				// Material flags
 				f->special_tiles[j].material_flags = 0;
 				if(f->tiledef_special[j].backface_culling)
@@ -686,7 +710,7 @@ class CNodeDefManager: public IWritableNodeDefManager
 		}
 #endif
 	}
-	void serialize(std::ostream &os)
+	void serialize(std::ostream &os, u16 protocol_version)
 	{
 		writeU8(os, 1); // version
 		u16 count = 0;
@@ -702,7 +726,7 @@ class CNodeDefManager: public IWritableNodeDefManager
 			// Wrap it in a string to allow different lengths without
 			// strict version incompatibilities
 			std::ostringstream wrapper_os(std::ios::binary);
-			f->serialize(wrapper_os);
+			f->serialize(wrapper_os, protocol_version);
 			os2<<serializeString(wrapper_os.str());
 			count++;
 		}
@@ -759,3 +783,122 @@ IWritableNodeDefManager* createNodeDefManager()
 	return new CNodeDefManager();
 }
 
+/*
+	Serialization of old ContentFeatures formats
+*/
+
+void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
+{
+	if(protocol_version == 13)
+	{
+		writeU8(os, 5); // version
+		os<<serializeString(name);
+		writeU16(os, groups.size());
+		for(ItemGroupList::const_iterator
+				i = groups.begin(); i != groups.end(); i++){
+			os<<serializeString(i->first);
+			writeS16(os, i->second);
+		}
+		writeU8(os, drawtype);
+		writeF1000(os, visual_scale);
+		writeU8(os, 6);
+		for(u32 i=0; i<6; i++)
+			tiledef[i].serialize(os);
+		writeU8(os, CF_SPECIAL_COUNT);
+		for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
+			tiledef_special[i].serialize(os);
+		}
+		writeU8(os, alpha);
+		writeU8(os, post_effect_color.getAlpha());
+		writeU8(os, post_effect_color.getRed());
+		writeU8(os, post_effect_color.getGreen());
+		writeU8(os, post_effect_color.getBlue());
+		writeU8(os, param_type);
+		writeU8(os, param_type_2);
+		writeU8(os, is_ground_content);
+		writeU8(os, light_propagates);
+		writeU8(os, sunlight_propagates);
+		writeU8(os, walkable);
+		writeU8(os, pointable);
+		writeU8(os, diggable);
+		writeU8(os, climbable);
+		writeU8(os, buildable_to);
+		os<<serializeString(""); // legacy: used to be metadata_name
+		writeU8(os, liquid_type);
+		os<<serializeString(liquid_alternative_flowing);
+		os<<serializeString(liquid_alternative_source);
+		writeU8(os, liquid_viscosity);
+		writeU8(os, light_source);
+		writeU32(os, damage_per_second);
+		node_box.serialize(os);
+		selection_box.serialize(os);
+		writeU8(os, legacy_facedir_simple);
+		writeU8(os, legacy_wallmounted);
+		serializeSimpleSoundSpec(sound_footstep, os);
+		serializeSimpleSoundSpec(sound_dig, os);
+		serializeSimpleSoundSpec(sound_dug, os);
+	}
+	else
+	{
+		throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
+	}
+}
+
+void ContentFeatures::deSerializeOld(std::istream &is, int version)
+{
+	if(version == 5) // In PROTOCOL_VERSION 13
+	{
+		name = deSerializeString(is);
+		groups.clear();
+		u32 groups_size = readU16(is);
+		for(u32 i=0; i<groups_size; i++){
+			std::string name = deSerializeString(is);
+			int value = readS16(is);
+			groups[name] = value;
+		}
+		drawtype = (enum NodeDrawType)readU8(is);
+		visual_scale = readF1000(is);
+		if(readU8(is) != 6)
+			throw SerializationError("unsupported tile count");
+		for(u32 i=0; i<6; i++)
+			tiledef[i].deSerialize(is);
+		if(readU8(is) != CF_SPECIAL_COUNT)
+			throw SerializationError("unsupported CF_SPECIAL_COUNT");
+		for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
+			tiledef_special[i].deSerialize(is);
+		alpha = readU8(is);
+		post_effect_color.setAlpha(readU8(is));
+		post_effect_color.setRed(readU8(is));
+		post_effect_color.setGreen(readU8(is));
+		post_effect_color.setBlue(readU8(is));
+		param_type = (enum ContentParamType)readU8(is);
+		param_type_2 = (enum ContentParamType2)readU8(is);
+		is_ground_content = readU8(is);
+		light_propagates = readU8(is);
+		sunlight_propagates = readU8(is);
+		walkable = readU8(is);
+		pointable = readU8(is);
+		diggable = readU8(is);
+		climbable = readU8(is);
+		buildable_to = readU8(is);
+		deSerializeString(is); // legacy: used to be metadata_name
+		liquid_type = (enum LiquidType)readU8(is);
+		liquid_alternative_flowing = deSerializeString(is);
+		liquid_alternative_source = deSerializeString(is);
+		liquid_viscosity = readU8(is);
+		light_source = readU8(is);
+		damage_per_second = readU32(is);
+		node_box.deSerialize(is);
+		selection_box.deSerialize(is);
+		legacy_facedir_simple = readU8(is);
+		legacy_wallmounted = readU8(is);
+		deSerializeSimpleSoundSpec(sound_footstep, is);
+		deSerializeSimpleSoundSpec(sound_dig, is);
+		deSerializeSimpleSoundSpec(sound_dug, is);
+	}
+	else
+	{
+		throw SerializationError("unsupported ContentFeatures version");
+	}
+}
+

src/nodedef.h

@@ -209,6 +209,8 @@ struct ContentFeatures
 	// 1 giving almost instantaneous propagation and 7 being
 	// the slowest possible
 	u8 liquid_viscosity;
+	// Is liquid renewable (new liquid source will be created between 2 existing)
+	bool liquid_renewable;
 	// Amount of light the node emits
 	u8 light_source;
 	u32 damage_per_second;
@@ -232,8 +234,10 @@ struct ContentFeatures
 	ContentFeatures();
 	~ContentFeatures();
 	void reset();
-	void serialize(std::ostream &os);
+	void serialize(std::ostream &os, u16 protocol_version);
 	void deSerialize(std::istream &is);
+	void serializeOld(std::ostream &os, u16 protocol_version);
+	void deSerializeOld(std::istream &is, int version);
 
 	/*
 		Some handy methods
@@ -262,7 +266,7 @@ class INodeDefManager
 			const=0;
 	virtual const ContentFeatures& get(const std::string &name) const=0;
 	
-	virtual void serialize(std::ostream &os)=0;
+	virtual void serialize(std::ostream &os, u16 protocol_version)=0;
 };
 
 class IWritableNodeDefManager : public INodeDefManager
@@ -303,7 +307,7 @@ class IWritableNodeDefManager : public INodeDefManager
 	*/
 	virtual void updateTextures(ITextureSource *tsrc)=0;
 
-	virtual void serialize(std::ostream &os)=0;
+	virtual void serialize(std::ostream &os, u16 protocol_version)=0;
 	virtual void deSerialize(std::istream &is)=0;
 };
 

src/noise.cpp

@@ -37,7 +37,7 @@ double dotProduct(double vx, double vy, double wx, double wy){
 }
  
 double easeCurve(double t){
-    return 6*pow(t,5)-15*pow(t,4)+10*pow(t,3);
+    return t * t * t * (6. * t * t - 15. * t + 10.);
 }
  
 double linearInterpolation(double x0, double x1, double t){

src/object_properties.cpp

@@ -18,8 +18,10 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "object_properties.h"
+#include "irrlichttypes_bloated.h"
 #include "util/serialize.h"
 #include <sstream>
+#include <map>
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 #define PP2(x) "("<<(x).X<<","<<(x).Y<<")"
@@ -30,6 +32,7 @@ ObjectProperties::ObjectProperties():
 	weight(5),
 	collisionbox(-0.5,-0.5,-0.5, 0.5,0.5,0.5),
 	visual("sprite"),
+	mesh(""),
 	visual_size(1,1),
 	spritediv(1,1),
 	initial_sprite_basepos(0,0),
@@ -38,6 +41,7 @@ ObjectProperties::ObjectProperties():
 	automatic_rotate(0)
 {
 	textures.push_back("unknown_object.png");
+	colors.push_back(video::SColor(255,255,255,255));
 }
 
 std::string ObjectProperties::dump()
@@ -48,12 +52,18 @@ std::string ObjectProperties::dump()
 	os<<", weight="<<weight;
 	os<<", collisionbox="<<PP(collisionbox.MinEdge)<<","<<PP(collisionbox.MaxEdge);
 	os<<", visual="<<visual;
+	os<<", mesh="<<mesh;
 	os<<", visual_size="<<PP2(visual_size);
 	os<<", textures=[";
 	for(u32 i=0; i<textures.size(); i++){
 		os<<"\""<<textures[i]<<"\" ";
 	}
 	os<<"]";
+	os<<", colors=[";
+	for(u32 i=0; i<colors.size(); i++){
+		os<<"\""<<colors[i].getAlpha()<<","<<colors[i].getRed()<<","<<colors[i].getGreen()<<","<<colors[i].getBlue()<<"\" ";
+	}
+	os<<"]";
 	os<<", spritediv="<<PP2(spritediv);
 	os<<", initial_sprite_basepos="<<PP2(initial_sprite_basepos);
 	os<<", is_visible="<<is_visible;
@@ -81,32 +91,49 @@ void ObjectProperties::serialize(std::ostream &os) const
 	writeU8(os, is_visible);
 	writeU8(os, makes_footstep_sound);
 	writeF1000(os, automatic_rotate);
+	// Added in protocol version 14
+	os<<serializeString(mesh);
+	writeU16(os, colors.size());
+	for(u32 i=0; i<colors.size(); i++){
+		writeARGB8(os, colors[i]);
+	}
+	// Add stuff only at the bottom.
+	// Never remove anything, because we don't want new versions of this
 }
 
 void ObjectProperties::deSerialize(std::istream &is)
 {
 	int version = readU8(is);
-	if(version != 1) throw SerializationError(
-			"unsupported ObjectProperties version");
-	hp_max = readS16(is);
-	physical = readU8(is);
-	weight = readF1000(is);
-	collisionbox.MinEdge = readV3F1000(is);
-	collisionbox.MaxEdge = readV3F1000(is);
-	visual = deSerializeString(is);
-	visual_size = readV2F1000(is);
-	textures.clear();
-	u32 texture_count = readU16(is);
-	for(u32 i=0; i<texture_count; i++){
-		textures.push_back(deSerializeString(is));
+	if(version == 1)
+	{
+		try{
+			hp_max = readS16(is);
+			physical = readU8(is);
+			weight = readF1000(is);
+			collisionbox.MinEdge = readV3F1000(is);
+			collisionbox.MaxEdge = readV3F1000(is);
+			visual = deSerializeString(is);
+			visual_size = readV2F1000(is);
+			textures.clear();
+			u32 texture_count = readU16(is);
+			for(u32 i=0; i<texture_count; i++){
+				textures.push_back(deSerializeString(is));
+			}
+			spritediv = readV2S16(is);
+			initial_sprite_basepos = readV2S16(is);
+			is_visible = readU8(is);
+			makes_footstep_sound = readU8(is);
+			automatic_rotate = readF1000(is);
+			mesh = deSerializeString(is);
+			u32 color_count = readU16(is);
+			for(u32 i=0; i<color_count; i++){
+				colors.push_back(readARGB8(is));
+			}
+		}catch(SerializationError &e){}
+	}
+	else
+	{
+		throw SerializationError("unsupported ObjectProperties version");
 	}
-	spritediv = readV2S16(is);
-	initial_sprite_basepos = readV2S16(is);
-	is_visible = readU8(is);
-	makes_footstep_sound = readU8(is);
-	try{
-		automatic_rotate = readF1000(is);
-	}catch(SerializationError &e){}
 }
 
-

src/object_properties.h

@@ -23,6 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <string>
 #include "irrlichttypes_bloated.h"
 #include <iostream>
+#include <map>
 
 struct ObjectProperties
 {
@@ -32,14 +33,17 @@ struct ObjectProperties
 	float weight;
 	core::aabbox3d<f32> collisionbox;
 	std::string visual;
+	std::string mesh;
 	v2f visual_size;
 	core::array<std::string> textures;
+	core::array<video::SColor> colors;
 	v2s16 spritediv;
 	v2s16 initial_sprite_basepos;
 	bool is_visible;
 	bool makes_footstep_sound;
 	float automatic_rotate;
 
+
 	ObjectProperties();
 	std::string dump();
 	void serialize(std::ostream &os) const;

src/player.h

@@ -28,6 +28,61 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #define PLAYERNAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"
 
+struct PlayerControl
+{
+	PlayerControl()
+	{
+		up = false;
+		down = false;
+		left = false;
+		right = false;
+		jump = false;
+		aux1 = false;
+		sneak = false;
+		LMB = false;
+		RMB = false;
+		pitch = 0;
+		yaw = 0;
+	}
+	PlayerControl(
+		bool a_up,
+		bool a_down,
+		bool a_left,
+		bool a_right,
+		bool a_jump,
+		bool a_aux1,
+		bool a_sneak,
+		bool a_LMB,
+		bool a_RMB,
+		float a_pitch,
+		float a_yaw
+	)
+	{
+		up = a_up;
+		down = a_down;
+		left = a_left;
+		right = a_right;
+		jump = a_jump;
+		aux1 = a_aux1;
+		sneak = a_sneak;
+		LMB = a_LMB;
+		RMB = a_RMB;
+		pitch = a_pitch;
+		yaw = a_yaw;
+	}
+	bool up;
+	bool down;
+	bool left;
+	bool right;
+	bool jump;
+	bool aux1;
+	bool sneak;
+	bool LMB;
+	bool RMB;
+	float pitch;
+	float yaw;
+};
+
 class Map;
 class IGameDef;
 struct CollisionInfo;
@@ -155,8 +210,16 @@ class Player
 	u16 hp;
 
 	u16 peer_id;
-
+	
 	std::string inventory_formspec;
+	
+	PlayerControl control;
+	PlayerControl getPlayerControl()
+	{
+		return control;
+	}
+	
+	u32 keyPressed;
 
 protected:
 	IGameDef *m_gamedef;
@@ -182,7 +245,7 @@ class RemotePlayer : public Player
 	void setPlayerSAO(PlayerSAO *sao)
 	{ m_sao = sao; }
 	void setPosition(const v3f &position);
-
+	
 private:
 	PlayerSAO *m_sao;
 };

src/scriptapi.cpp

@@ -936,6 +936,8 @@ static void read_object_properties(lua_State *L, int index,
 	lua_pop(L, 1);
 
 	getstringfield(L, -1, "visual", prop->visual);
+
+	getstringfield(L, -1, "mesh", prop->mesh);
 	
 	lua_getfield(L, -1, "visual_size");
 	if(lua_istable(L, -1))
@@ -958,6 +960,23 @@ static void read_object_properties(lua_State *L, int index,
 		}
 	}
 	lua_pop(L, 1);
+
+	lua_getfield(L, -1, "colors");
+	if(lua_istable(L, -1)){
+		prop->colors.clear();
+		int table = lua_gettop(L);
+		lua_pushnil(L);
+		while(lua_next(L, table) != 0){
+			// key at index -2 and value at index -1
+			if(lua_isstring(L, -1))
+				prop->colors.push_back(readARGB8(L, -1));
+			else
+				prop->colors.push_back(video::SColor(255, 255, 255, 255));
+			// removes value, keeps key for next iteration
+			lua_pop(L, 1);
+		}
+	}
+	lua_pop(L, 1);
 	
 	lua_getfield(L, -1, "spritediv");
 	if(lua_istable(L, -1))
@@ -1238,6 +1257,7 @@ static ContentFeatures read_content_features(lua_State *L, int index)
 	// the slowest possible
 	f.liquid_viscosity = getintfield_default(L, index,
 			"liquid_viscosity", f.liquid_viscosity);
+	getboolfield(L, index, "liquid_renewable", f.liquid_renewable);
 	// Amount of light the node emits
 	f.light_source = getintfield_default(L, index,
 			"light_source", f.light_source);
@@ -2542,7 +2562,7 @@ class ObjectRef
 		return 0;
 	}
 
-	// punch(self, puncher, tool_capabilities, direction, time_from_last_punch)
+	// punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
 	static int l_punch(lua_State *L)
 	{
 		ObjectRef *ref = checkobject(L, 1);
@@ -2551,13 +2571,18 @@ class ObjectRef
 		ServerActiveObject *puncher = getobject(puncher_ref);
 		if(co == NULL) return 0;
 		if(puncher == NULL) return 0;
-		ToolCapabilities toolcap = read_tool_capabilities(L, 3);
-		v3f dir = read_v3f(L, 4);
+		v3f dir;
+		if(lua_type(L, 5) != LUA_TTABLE)
+			dir = co->getBasePosition() - puncher->getBasePosition();
+		else
+			dir = read_v3f(L, 5);
 		float time_from_last_punch = 1000000;
-		if(lua_isnumber(L, 5))
-			time_from_last_punch = lua_tonumber(L, 5);
+		if(lua_isnumber(L, 3))
+			time_from_last_punch = lua_tonumber(L, 3);
+		ToolCapabilities toolcap = read_tool_capabilities(L, 4);
+		dir.normalize();
 		// Do it
-		puncher->punch(dir, &toolcap, puncher, time_from_last_punch);
+		co->punch(dir, &toolcap, puncher, time_from_last_punch);
 		return 0;
 	}
 
@@ -2691,6 +2716,80 @@ class ObjectRef
 		return 0;
 	}
 
+	// set_animation(self, frame_range, frame_speed, frame_blend)
+	static int l_set_animation(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		ServerActiveObject *co = getobject(ref);
+		if(co == NULL) return 0;
+		// Do it
+		v2f frames = v2f(1, 1);
+		if(!lua_isnil(L, 2))
+			frames = read_v2f(L, 2);
+		float frame_speed = 15;
+		if(!lua_isnil(L, 3))
+			frame_speed = lua_tonumber(L, 3);
+		float frame_blend = 0;
+		if(!lua_isnil(L, 4))
+			frame_blend = lua_tonumber(L, 4);
+		co->setAnimation(frames, frame_speed, frame_blend);
+		return 0;
+	}
+
+	// set_bone_position(self, std::string bone, v3f position, v3f rotation)
+	static int l_set_bone_position(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		ServerActiveObject *co = getobject(ref);
+		if(co == NULL) return 0;
+		// Do it
+		std::string bone = "";
+		if(!lua_isnil(L, 2))
+			bone = lua_tostring(L, 2);
+		v3f position = v3f(0, 0, 0);
+		if(!lua_isnil(L, 3))
+			position = read_v3f(L, 3);
+		v3f rotation = v3f(0, 0, 0);
+		if(!lua_isnil(L, 4))
+			rotation = read_v3f(L, 4);
+		co->setBonePosition(bone, position, rotation);
+		return 0;
+	}
+
+	// set_attach(self, parent, bone, position, rotation)
+	static int l_set_attach(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		ObjectRef *parent_ref = checkobject(L, 2);
+		ServerActiveObject *co = getobject(ref);
+		ServerActiveObject *parent = getobject(parent_ref);
+		if(co == NULL) return 0;
+		if(parent == NULL) return 0;
+		// Do it
+		std::string bone = "";
+		if(!lua_isnil(L, 3))
+			bone = lua_tostring(L, 3);
+		v3f position = v3f(0, 0, 0);
+		if(!lua_isnil(L, 4))
+			position = read_v3f(L, 4);
+		v3f rotation = v3f(0, 0, 0);
+		if(!lua_isnil(L, 5))
+			rotation = read_v3f(L, 5);
+		co->setAttachment(parent->getId(), bone, position, rotation);
+		return 0;
+	}
+
+	// set_detach(self)
+	static int l_set_detach(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		ServerActiveObject *co = getobject(ref);
+		if(co == NULL) return 0;
+		// Do it
+		co->setAttachment(0, "", v3f(0,0,0), v3f(0,0,0));
+		return 0;
+	}
+
 	// set_properties(self, properties)
 	static int l_set_properties(lua_State *L)
 	{
@@ -2926,7 +3025,54 @@ class ObjectRef
 		lua_pushlstring(L, formspec.c_str(), formspec.size());
 		return 1;
 	}
-
+	
+	// get_player_control(self)
+	static int l_get_player_control(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		Player *player = getplayer(ref);
+		if(player == NULL){
+			lua_pushlstring(L, "", 0);
+			return 1;
+		}
+		// Do it
+		PlayerControl control = player->getPlayerControl();
+		lua_newtable(L);
+		lua_pushboolean(L, control.up);
+		lua_setfield(L, -2, "up");
+		lua_pushboolean(L, control.down);
+		lua_setfield(L, -2, "down");
+		lua_pushboolean(L, control.left);
+		lua_setfield(L, -2, "left");
+		lua_pushboolean(L, control.right);
+		lua_setfield(L, -2, "right");
+		lua_pushboolean(L, control.jump);
+		lua_setfield(L, -2, "jump");
+		lua_pushboolean(L, control.aux1);
+		lua_setfield(L, -2, "aux1");
+		lua_pushboolean(L, control.sneak);
+		lua_setfield(L, -2, "sneak");
+		lua_pushboolean(L, control.LMB);
+		lua_setfield(L, -2, "LMB");
+		lua_pushboolean(L, control.RMB);
+		lua_setfield(L, -2, "RMB");
+		return 1;
+	}
+	
+	// get_player_control_bits(self)
+	static int l_get_player_control_bits(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		Player *player = getplayer(ref);
+		if(player == NULL){
+			lua_pushlstring(L, "", 0);
+			return 1;
+		}
+		// Do it	
+		lua_pushnumber(L, player->keyPressed);
+		return 1;
+	}
+	
 public:
 	ObjectRef(ServerActiveObject *object):
 		m_object(object)
@@ -3005,6 +3151,10 @@ const luaL_reg ObjectRef::methods[] = {
 	method(ObjectRef, get_wielded_item),
 	method(ObjectRef, set_wielded_item),
 	method(ObjectRef, set_armor_groups),
+	method(ObjectRef, set_animation),
+	method(ObjectRef, set_bone_position),
+	method(ObjectRef, set_attach),
+	method(ObjectRef, set_detach),
 	method(ObjectRef, set_properties),
 	// LuaEntitySAO-only
 	method(ObjectRef, setvelocity),
@@ -3025,6 +3175,8 @@ const luaL_reg ObjectRef::methods[] = {
 	method(ObjectRef, get_look_yaw),
 	method(ObjectRef, set_inventory_formspec),
 	method(ObjectRef, get_inventory_formspec),
+	method(ObjectRef, get_player_control),
+	method(ObjectRef, get_player_control_bits),
 	{0,0}
 };
 
@@ -3452,7 +3604,7 @@ class EnvRef
 		if(lua_isnumber(L, 3))
 			time_of_day = 24000.0 * lua_tonumber(L, 3);
 		time_of_day %= 24000;
-		u32 dnr = time_to_daynight_ratio(time_of_day);
+		u32 dnr = time_to_daynight_ratio(time_of_day, true);
 		MapNode n = env->getMap().getNodeNoEx(pos);
 		try{
 			MapNode n = env->getMap().getNode(pos);
@@ -5424,6 +5576,19 @@ bool scriptapi_on_chat_message(lua_State *L, const std::string &name,
 	return ate;
 }
 
+void scriptapi_on_shutdown(lua_State *L)
+{
+	realitycheck(L);
+	assert(lua_checkstack(L, 20));
+	StackUnroller stack_unroller(L);
+
+	// Get registered shutdown hooks
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_on_shutdown");
+	// Call callbacks
+	scriptapi_run_callbacks(L, 0, RUN_CALLBACKS_MODE_FIRST);
+}
+
 void scriptapi_on_newplayer(lua_State *L, ServerActiveObject *player)
 {
 	realitycheck(L);
@@ -6478,7 +6643,7 @@ bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name)
 }
 
 void scriptapi_luaentity_activate(lua_State *L, u16 id,
-		const std::string &staticdata)
+		const std::string &staticdata, u32 dtime_s)
 {
 	realitycheck(L);
 	assert(lua_checkstack(L, 20));
@@ -6496,8 +6661,9 @@ void scriptapi_luaentity_activate(lua_State *L, u16 id,
 		luaL_checktype(L, -1, LUA_TFUNCTION);
 		lua_pushvalue(L, object); // self
 		lua_pushlstring(L, staticdata.c_str(), staticdata.size());
-		// Call with 2 arguments, 0 results
-		if(lua_pcall(L, 2, 0, 0))
+		lua_pushinteger(L, dtime_s);
+		// Call with 3 arguments, 0 results
+		if(lua_pcall(L, 3, 0, 0))
 			script_error(L, "error running function on_activate: %s\n",
 					lua_tostring(L, -1));
 	}
@@ -6581,6 +6747,8 @@ void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
 	lua_pop(L, 1);
 
 	getstringfield(L, -1, "visual", prop->visual);
+
+	getstringfield(L, -1, "mesh", prop->mesh);
 	
 	// Deprecated: read object properties directly
 	read_object_properties(L, -1, prop);

src/scriptapi.h

@@ -55,6 +55,9 @@ void scriptapi_environment_step(lua_State *L, float dtime);
 void scriptapi_environment_on_generated(lua_State *L, v3s16 minp, v3s16 maxp,
 		u32 blockseed);
 
+/* server */
+void scriptapi_on_shutdown(lua_State *L);
+
 /* misc */
 void scriptapi_on_newplayer(lua_State *L, ServerActiveObject *player);
 void scriptapi_on_dieplayer(lua_State *L, ServerActiveObject *player);
@@ -167,7 +170,7 @@ void scriptapi_detached_inventory_on_take(lua_State *L,
 // Returns true if succesfully added into Lua; false otherwise.
 bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name);
 void scriptapi_luaentity_activate(lua_State *L, u16 id,
-		const std::string &staticdata);
+		const std::string &staticdata, u32 dtime_s);
 void scriptapi_luaentity_rm(lua_State *L, u16 id);
 std::string scriptapi_luaentity_get_staticdata(lua_State *L, u16 id);
 void scriptapi_luaentity_get_properties(lua_State *L, u16 id,

src/server.cpp

@@ -54,6 +54,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/pointedthing.h"
 #include "util/mathconstants.h"
 #include "rollback.h"
+#include "util/serialize.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
@@ -1111,7 +1112,17 @@ Server::~Server()
 			{}
 		}
 	}
-	
+
+	{
+		JMutexAutoLock envlock(m_env_mutex);
+		JMutexAutoLock conlock(m_con_mutex);
+
+		/*
+			Execute script shutdown hooks
+		*/
+		scriptapi_on_shutdown(m_lua);
+	}
+
 	{
 		JMutexAutoLock envlock(m_env_mutex);
 
@@ -1143,14 +1154,6 @@ Server::~Server()
 			i = m_clients.getIterator();
 			i.atEnd() == false; i++)
 		{
-			/*// Delete player
-			// NOTE: These are removed by env destructor
-			{
-				u16 peer_id = i.getNode()->getKey();
-				JMutexAutoLock envlock(m_env_mutex);
-				m_env->removePlayer(peer_id);
-			}*/
-			
 			// Delete client
 			delete i.getNode()->getValue();
 		}
@@ -1371,9 +1374,9 @@ void Server::AsyncRunStep()
 			/*
 				Send player inventories and HPs if necessary
 			*/
-			if(playersao->m_teleported){
+			if(playersao->m_moved){
 				SendMovePlayer(client->peer_id);
-				playersao->m_teleported = false;
+				playersao->m_moved = false;
 			}
 			if(playersao->m_inventory_not_sent){
 				UpdateCrafting(client->peer_id);
@@ -1567,7 +1570,7 @@ void Server::AsyncRunStep()
 				
 				if(obj)
 					data_buffer.append(serializeLongString(
-							obj->getClientInitializationData()));
+							obj->getClientInitializationData(client->net_proto_version)));
 				else
 					data_buffer.append(serializeLongString(""));
 
@@ -2037,40 +2040,74 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 			Read and check network protocol version
 		*/
 
-		u16 net_proto_version = 0;
+		u16 min_net_proto_version = 0;
 		if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
+			min_net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
+
+		// Use same version as minimum and maximum if maximum version field
+		// doesn't exist (backwards compatibility)
+		u16 max_net_proto_version = min_net_proto_version;
+		if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2+2)
+			max_net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2]);
+
+		// Start with client's maximum version
+		u16 net_proto_version = max_net_proto_version;
+
+		// Figure out a working version if it is possible at all
+		if(max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN ||
+				min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX)
 		{
-			net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
+			// If maximum is larger than our maximum, go with our maximum
+			if(max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
+				net_proto_version = SERVER_PROTOCOL_VERSION_MAX;
+			// Else go with client's maximum
+			else
+				net_proto_version = max_net_proto_version;
 		}
 
+		verbosestream<<"Server: "<<peer_id<<" Protocol version: min: "
+				<<min_net_proto_version<<", max: "<<max_net_proto_version
+				<<", chosen: "<<net_proto_version<<std::endl;
+
 		getClient(peer_id)->net_proto_version = net_proto_version;
 
-		if(net_proto_version == 0)
+		if(net_proto_version < SERVER_PROTOCOL_VERSION_MIN ||
+				net_proto_version > SERVER_PROTOCOL_VERSION_MAX)
 		{
-			actionstream<<"Server: An old tried to connect from "<<addr_s
+			actionstream<<"Server: A mismatched client tried to connect from "<<addr_s
 					<<std::endl;
 			SendAccessDenied(m_con, peer_id, std::wstring(
 					L"Your client's version is not supported.\n"
 					L"Server version is ")
-					+ narrow_to_wide(VERSION_STRING) + L"."
+					+ narrow_to_wide(VERSION_STRING) + L",\n"
+					+ L"server's PROTOCOL_VERSION is "
+					+ narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MIN))
+					+ L"..."
+					+ narrow_to_wide(itos(SERVER_PROTOCOL_VERSION_MAX))
+					+ L", client's PROTOCOL_VERSION is "
+					+ narrow_to_wide(itos(min_net_proto_version))
+					+ L"..."
+					+ narrow_to_wide(itos(max_net_proto_version))
 			);
 			return;
 		}
 		
 		if(g_settings->getBool("strict_protocol_version_checking"))
 		{
-			if(net_proto_version != PROTOCOL_VERSION)
+			if(net_proto_version != LATEST_PROTOCOL_VERSION)
 			{
-				actionstream<<"Server: A mismatched client tried to connect"
-						<<" from "<<addr_s<<std::endl;
+				actionstream<<"Server: A mismatched (strict) client tried to "
+						<<"connect from "<<addr_s<<std::endl;
 				SendAccessDenied(m_con, peer_id, std::wstring(
 						L"Your client's version is not supported.\n"
 						L"Server version is ")
 						+ narrow_to_wide(VERSION_STRING) + L",\n"
-						+ L"server's PROTOCOL_VERSION is "
-						+ narrow_to_wide(itos(PROTOCOL_VERSION))
+						+ L"server's PROTOCOL_VERSION (strict) is "
+						+ narrow_to_wide(itos(LATEST_PROTOCOL_VERSION))
 						+ L", client's PROTOCOL_VERSION is "
-						+ narrow_to_wide(itos(net_proto_version))
+						+ narrow_to_wide(itos(min_net_proto_version))
+						+ L"..."
+						+ narrow_to_wide(itos(max_net_proto_version))
 				);
 				return;
 			}
@@ -2212,11 +2249,12 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 			Answer with a TOCLIENT_INIT
 		*/
 		{
-			SharedBuffer<u8> reply(2+1+6+8);
+			SharedBuffer<u8> reply(2+1+6+8+4);
 			writeU16(&reply[0], TOCLIENT_INIT);
 			writeU8(&reply[2], deployed);
 			writeV3S16(&reply[2+1], floatToInt(playersao->getPlayer()->getPosition()+v3f(0,BS/2,0), BS));
 			writeU64(&reply[2+1+6], m_env->getServerMap().getSeed());
+			writeF1000(&reply[2+1+6+8], g_settings->getFloat("dedicated_server_step"));
 			
 			// Send as reliable
 			m_con.Send(peer_id, 0, reply, true);
@@ -2242,8 +2280,9 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 			return;
 		}
 
-		getClient(peer_id)->serialization_version
-				= getClient(peer_id)->pending_serialization_version;
+		RemoteClient *client = getClient(peer_id);
+		client->serialization_version =
+				getClient(peer_id)->pending_serialization_version;
 
 		/*
 			Send some initialization data
@@ -2256,7 +2295,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		SendItemDef(m_con, peer_id, m_itemdef);
 		
 		// Send node definitions
-		SendNodeDef(m_con, peer_id, m_nodedef);
+		SendNodeDef(m_con, peer_id, m_nodedef, client->net_proto_version);
 		
 		// Send media announcement
 		sendMediaAnnouncement(peer_id);
@@ -2310,9 +2349,10 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		}
 		
 		// Warnings about protocol version can be issued here
-		if(getClient(peer_id)->net_proto_version < PROTOCOL_VERSION)
+		if(getClient(peer_id)->net_proto_version < LATEST_PROTOCOL_VERSION)
 		{
-			SendChatMessage(peer_id, L"# Server: WARNING: YOUR CLIENT IS OLD AND MAY WORK PROPERLY WITH THIS SERVER!");
+			SendChatMessage(peer_id, L"# Server: WARNING: YOUR CLIENT'S "
+					L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!");
 		}
 
 		/*
@@ -2377,6 +2417,9 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		v3s32 ss = readV3S32(&data[start+2+12]);
 		f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
 		f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
+		u32 keyPressed = 0;
+		if(datasize >= 2+12+12+4+4+4)
+			keyPressed = (u32)readU32(&data[2+12+12+4+4]);
 		v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
 		v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
 		pitch = wrapDegrees(pitch);
@@ -2386,6 +2429,16 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		player->setSpeed(speed);
 		player->setPitch(pitch);
 		player->setYaw(yaw);
+		player->keyPressed=keyPressed;
+		player->control.up = (bool)(keyPressed&1);
+		player->control.down = (bool)(keyPressed&2);
+		player->control.left = (bool)(keyPressed&4);
+		player->control.right = (bool)(keyPressed&8);
+		player->control.jump = (bool)(keyPressed&16);
+		player->control.aux1 = (bool)(keyPressed&32);
+		player->control.sneak = (bool)(keyPressed&64);
+		player->control.LMB = (bool)(keyPressed&128);
+		player->control.RMB = (bool)(keyPressed&256);
 		
 		/*infostream<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
 				<<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
@@ -3166,6 +3219,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 			}
 
 		} // action == 4
+		
 
 		/*
 			Catch invalid actions
@@ -3496,7 +3550,7 @@ void Server::SendItemDef(con::Connection &con, u16 peer_id,
 }
 
 void Server::SendNodeDef(con::Connection &con, u16 peer_id,
-		INodeDefManager *nodedef)
+		INodeDefManager *nodedef, u16 protocol_version)
 {
 	DSTACK(__FUNCTION_NAME);
 	std::ostringstream os(std::ios_base::binary);
@@ -3508,7 +3562,7 @@ void Server::SendNodeDef(con::Connection &con, u16 peer_id,
 	*/
 	writeU16(os, TOCLIENT_NODEDEF);
 	std::ostringstream tmp_os(std::ios::binary);
-	nodedef->serialize(tmp_os);
+	nodedef->serialize(tmp_os, protocol_version);
 	std::ostringstream tmp_os2(std::ios::binary);
 	compressZlib(tmp_os.str(), tmp_os2);
 	os<<serializeLongString(tmp_os2.str());
@@ -4029,6 +4083,7 @@ void Server::fillMediaCache()
 		paths.push_back(mod.path + DIR_DELIM + "textures");
 		paths.push_back(mod.path + DIR_DELIM + "sounds");
 		paths.push_back(mod.path + DIR_DELIM + "media");
+		paths.push_back(mod.path + DIR_DELIM + "models");
 	}
 	std::string path_all = "textures";
 	paths.push_back(path_all + DIR_DELIM + "all");
@@ -4054,6 +4109,7 @@ void Server::fillMediaCache()
 				".png", ".jpg", ".bmp", ".tga",
 				".pcx", ".ppm", ".psd", ".wal", ".rgb",
 				".ogg",
+				".x", ".b3d", ".md2", ".obj",
 				NULL
 			};
 			if(removeStringEnd(filename, supported_ext) == ""){
@@ -4632,6 +4688,10 @@ ITextureSource* Server::getTextureSource()
 {
 	return NULL;
 }
+IShaderSource* Server::getShaderSource()
+{
+	return NULL;
+}
 u16 Server::allocateUnknownNodeId(const std::string &name)
 {
 	return m_nodedef->allocateDummy(name);

src/server.h

@@ -560,6 +560,7 @@ class Server : public con::PeerHandler, public MapEventReceiver,
 	virtual INodeDefManager* getNodeDefManager();
 	virtual ICraftDefManager* getCraftDefManager();
 	virtual ITextureSource* getTextureSource();
+	virtual IShaderSource* getShaderSource();
 	virtual u16 allocateUnknownNodeId(const std::string &name);
 	virtual ISoundManager* getSoundManager();
 	virtual MtEventManager* getEventManager();
@@ -602,7 +603,7 @@ class Server : public con::PeerHandler, public MapEventReceiver,
 	static void SendItemDef(con::Connection &con, u16 peer_id,
 			IItemDefManager *itemdef);
 	static void SendNodeDef(con::Connection &con, u16 peer_id,
-			INodeDefManager *nodedef);
+			INodeDefManager *nodedef, u16 protocol_version);
 	
 	/*
 		Non-static send methods.

src/serverobject.h

@@ -62,7 +62,7 @@ class ServerActiveObject : public ActiveObject
 	{ return getType(); }
 
 	// Called after id has been set and has been inserted in environment
-	virtual void addedToEnvironment(){};
+	virtual void addedToEnvironment(u32 dtime_s){};
 	// Called before removing from environment
 	virtual void removingFromEnvironment(){};
 	// Returns true if object's deletion is the job of the
@@ -118,7 +118,7 @@ class ServerActiveObject : public ActiveObject
 		The return value of this is passed to the client-side object
 		when it is created
 	*/
-	virtual std::string getClientInitializationData(){return "";}
+	virtual std::string getClientInitializationData(u16 protocol_version){return "";}
 	
 	/*
 		The return value of this is passed to the server-side object
@@ -152,6 +152,12 @@ class ServerActiveObject : public ActiveObject
 
 	virtual void setArmorGroups(const ItemGroupList &armor_groups)
 	{}
+	virtual void setAnimation(v2f frames, float frame_speed, float frame_blend)
+	{}
+	virtual void setBonePosition(std::string bone, v3f position, v3f rotation)
+	{}
+	virtual void setAttachment(int parent_id, std::string bone, v3f position, v3f rotation)
+	{}
 	virtual ObjectProperties* accessObjectProperties()
 	{ return NULL; }
 	virtual void notifyObjectPropertiesModified()

src/shader.cpp

@@ -0,0 +1,793 @@
+/*
+Minetest-c55
+Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 Kahrl <kahrl@gmx.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "shader.h"
+#include "irrlichttypes_extrabloated.h"
+#include "debug.h"
+#include "main.h" // for g_settings
+#include "filesys.h"
+#include "util/container.h"
+#include "util/thread.h"
+#include "settings.h"
+#include <iterator>
+#include <ICameraSceneNode.h>
+#include <IGPUProgrammingServices.h>
+#include <IMaterialRenderer.h>
+#include <IMaterialRendererServices.h>
+#include <IShaderConstantSetCallBack.h>
+#include "EShaderTypes.h"
+#include "log.h"
+#include "gamedef.h"
+#include "strfnd.h" // trim()
+
+/*
+	A cache from shader name to shader path
+*/
+MutexedMap<std::string, std::string> g_shadername_to_path_cache;
+
+/*
+	Gets the path to a shader by first checking if the file
+	  name_of_shader/filename
+	exists in shader_path and if not, using the data path.
+
+	If not found, returns "".
+
+	Utilizes a thread-safe cache.
+*/
+std::string getShaderPath(const std::string &name_of_shader,
+		const std::string &filename)
+{
+	std::string combined = name_of_shader + DIR_DELIM + filename;
+	std::string fullpath = "";
+	/*
+		Check from cache
+	*/
+	bool incache = g_shadername_to_path_cache.get(combined, &fullpath);
+	if(incache)
+		return fullpath;
+
+	/*
+		Check from shader_path
+	*/
+	std::string shader_path = g_settings->get("shader_path");
+	if(shader_path != "")
+	{
+		std::string testpath = shader_path + DIR_DELIM + combined;
+		if(fs::PathExists(testpath))
+			fullpath = testpath;
+	}
+
+	/*
+		Check from default data directory
+	*/
+	if(fullpath == "")
+	{
+		std::string rel_path = std::string("client") + DIR_DELIM
+				+ "shaders" + DIR_DELIM
+				+ name_of_shader + DIR_DELIM
+				+ filename;
+		std::string testpath = porting::path_share + DIR_DELIM + rel_path;
+		if(fs::PathExists(testpath))
+			fullpath = testpath;
+	}
+
+	// Add to cache (also an empty result is cached)
+	g_shadername_to_path_cache.set(combined, fullpath);
+
+	// Finally return it
+	return fullpath;
+}
+
+/*
+	SourceShaderCache: A cache used for storing source shaders.
+*/
+
+class SourceShaderCache
+{
+public:
+	void insert(const std::string &name_of_shader,
+			const std::string &filename,
+			const std::string &program,
+			bool prefer_local)
+	{
+		std::string combined = name_of_shader + DIR_DELIM + filename;
+		// Try to use local shader instead if asked to
+		if(prefer_local){
+			std::string path = getShaderPath(name_of_shader, filename);
+			if(path != ""){
+				std::string p = readFile(path);
+				if(p != ""){
+					m_programs[combined] = p;
+					return;
+				}
+			}
+		}
+		m_programs[combined] = program;
+	}
+	std::string get(const std::string &name_of_shader,
+			const std::string &filename)
+	{
+		std::string combined = name_of_shader + DIR_DELIM + filename;
+		core::map<std::string, std::string>::Node *n;
+		n = m_programs.find(combined);
+		if(n)
+			return n->getValue();
+		return "";
+	}
+	// Primarily fetches from cache, secondarily tries to read from filesystem
+	std::string getOrLoad(const std::string &name_of_shader,
+			const std::string &filename)
+	{
+		std::string combined = name_of_shader + DIR_DELIM + filename;
+		core::map<std::string, std::string>::Node *n;
+		n = m_programs.find(combined);
+		if(n)
+			return n->getValue();
+		std::string path = getShaderPath(name_of_shader, filename);
+		if(path == ""){
+			infostream<<"SourceShaderCache::getOrLoad(): No path found for \""
+					<<combined<<"\""<<std::endl;
+			return "";
+		}
+		infostream<<"SourceShaderCache::getOrLoad(): Loading path \""<<path
+				<<"\""<<std::endl;
+		std::string p = readFile(path);
+		if(p != ""){
+			m_programs[combined] = p;
+			return p;
+		}
+		return "";
+	}
+private:
+	core::map<std::string, std::string> m_programs;
+	std::string readFile(const std::string &path)
+	{
+		std::ifstream is(path.c_str(), std::ios::binary);
+		if(!is.is_open())
+			return "";
+		std::ostringstream tmp_os;
+		tmp_os << is.rdbuf();
+		return tmp_os.str();
+	}
+};
+
+/*
+	ShaderCallback: Sets constants that can be used in shaders
+*/
+
+class IShaderConstantSetterRegistry
+{
+public:
+	virtual ~IShaderConstantSetterRegistry(){};
+	virtual void onSetConstants(video::IMaterialRendererServices *services,
+			bool is_highlevel, const std::string &name) = 0;
+};
+
+class ShaderCallback : public video::IShaderConstantSetCallBack
+{
+	IShaderConstantSetterRegistry *m_scsr;
+	std::string m_name;
+
+public:
+	ShaderCallback(IShaderConstantSetterRegistry *scsr, const std::string &name):
+		m_scsr(scsr),
+		m_name(name)
+	{}
+	~ShaderCallback() {}
+
+	virtual void OnSetConstants(video::IMaterialRendererServices *services, s32 userData)
+	{
+		video::IVideoDriver *driver = services->getVideoDriver();
+		assert(driver);
+
+		bool is_highlevel = userData;
+
+		m_scsr->onSetConstants(services, is_highlevel, m_name);
+	}
+};
+
+/*
+	MainShaderConstantSetter: Set basic constants required for almost everything
+*/
+
+class MainShaderConstantSetter : public IShaderConstantSetter
+{
+public:
+	MainShaderConstantSetter(IrrlichtDevice *device):
+		m_device(device)
+	{}
+	~MainShaderConstantSetter() {}
+
+	virtual void onSetConstants(video::IMaterialRendererServices *services,
+			bool is_highlevel)
+	{
+		video::IVideoDriver *driver = services->getVideoDriver();
+		assert(driver);
+
+		// set inverted world matrix
+		core::matrix4 invWorld = driver->getTransform(video::ETS_WORLD);
+		invWorld.makeInverse();
+		if(is_highlevel)
+			services->setVertexShaderConstant("mInvWorld", invWorld.pointer(), 16);
+		else
+			services->setVertexShaderConstant(invWorld.pointer(), 0, 4);
+
+		// set clip matrix
+		core::matrix4 worldViewProj;
+		worldViewProj = driver->getTransform(video::ETS_PROJECTION);
+		worldViewProj *= driver->getTransform(video::ETS_VIEW);
+		worldViewProj *= driver->getTransform(video::ETS_WORLD);
+		if(is_highlevel)
+			services->setVertexShaderConstant("mWorldViewProj", worldViewProj.pointer(), 16);
+		else
+			services->setVertexShaderConstant(worldViewProj.pointer(), 4, 4);
+
+		// set transposed world matrix
+		core::matrix4 world = driver->getTransform(video::ETS_WORLD);
+		world = world.getTransposed();
+		if(is_highlevel)
+			services->setVertexShaderConstant("mTransWorld", world.pointer(), 16);
+		else
+			services->setVertexShaderConstant(world.pointer(), 8, 4);
+	}
+
+private:
+	IrrlichtDevice *m_device;
+};
+
+/*
+	ShaderSource
+*/
+
+class ShaderSource : public IWritableShaderSource, public IShaderConstantSetterRegistry
+{
+public:
+	ShaderSource(IrrlichtDevice *device);
+	~ShaderSource();
+
+	/*
+		Gets a shader material id from cache or
+		- if main thread, from getShaderIdDirect
+		- if other thread, adds to request queue and waits for main thread
+	*/
+	u32 getShaderId(const std::string &name);
+
+	/*
+		- If shader material specified by name is found from cache,
+		  return the cached id.
+		- Otherwise generate the shader material, add to cache and return id.
+
+		The id 0 points to a null shader. Its material is EMT_SOLID.
+	*/
+	u32 getShaderIdDirect(const std::string &name);
+
+	// Finds out the name of a cached shader.
+	std::string getShaderName(u32 id);
+
+	/*
+		If shader specified by the name pointed by the id doesn't
+		exist, create it, then return the cached shader.
+
+		Can be called from any thread. If called from some other thread
+		and not found in cache, the call is queued to the main thread
+		for processing.
+	*/
+	ShaderInfo getShader(u32 id);
+
+	ShaderInfo getShader(const std::string &name)
+	{
+		return getShader(getShaderId(name));
+	}
+
+	// Processes queued shader requests from other threads.
+	// Shall be called from the main thread.
+	void processQueue();
+
+	// Insert a shader program into the cache without touching the
+	// filesystem. Shall be called from the main thread.
+	void insertSourceShader(const std::string &name_of_shader,
+		const std::string &filename, const std::string &program);
+
+	// Rebuild shaders from the current set of source shaders
+	// Shall be called from the main thread.
+	void rebuildShaders();
+
+	void addGlobalConstantSetter(IShaderConstantSetter *setter)
+	{
+		m_global_setters.push_back(setter);
+	}
+
+	void onSetConstants(video::IMaterialRendererServices *services,
+			bool is_highlevel, const std::string &name);
+
+private:
+
+	// The id of the thread that is allowed to use irrlicht directly
+	threadid_t m_main_thread;
+	// The irrlicht device
+	IrrlichtDevice *m_device;
+	// The set-constants callback
+	ShaderCallback *m_shader_callback;
+
+	// Cache of source shaders
+	// This should be only accessed from the main thread
+	SourceShaderCache m_sourcecache;
+
+	// A shader id is index in this array.
+	// The first position contains a dummy shader.
+	core::array<ShaderInfo> m_shaderinfo_cache;
+	// Maps a shader name to an index in the former.
+	core::map<std::string, u32> m_name_to_id;
+	// The two former containers are behind this mutex
+	JMutex m_shaderinfo_cache_mutex;
+
+	// Queued shader fetches (to be processed by the main thread)
+	RequestQueue<std::string, u32, u8, u8> m_get_shader_queue;
+
+	// Global constant setters
+	// TODO: Delete these in the destructor
+	core::array<IShaderConstantSetter*> m_global_setters;
+};
+
+IWritableShaderSource* createShaderSource(IrrlichtDevice *device)
+{
+	return new ShaderSource(device);
+}
+
+/*
+	Generate shader given the shader name.
+*/
+ShaderInfo generate_shader(std::string name, IrrlichtDevice *device,
+		video::IShaderConstantSetCallBack *callback,
+		SourceShaderCache *sourcecache);
+
+/*
+	Load shader programs
+*/
+void load_shaders(std::string name, SourceShaderCache *sourcecache,
+		video::E_DRIVER_TYPE drivertype, s32 enable_shaders,
+		std::string &vertex_program, std::string &pixel_program,
+		std::string &geometry_program, bool &is_highlevel);
+
+ShaderSource::ShaderSource(IrrlichtDevice *device):
+		m_device(device)
+{
+	assert(m_device);
+
+	m_shader_callback = new ShaderCallback(this, "default");
+
+	m_shaderinfo_cache_mutex.Init();
+
+	m_main_thread = get_current_thread_id();
+
+	// Add a dummy ShaderInfo as the first index, named ""
+	m_shaderinfo_cache.push_back(ShaderInfo());
+	m_name_to_id[""] = 0;
+
+	// Add main global constant setter
+	addGlobalConstantSetter(new MainShaderConstantSetter(device));
+}
+
+ShaderSource::~ShaderSource()
+{
+	//m_shader_callback->drop();
+}
+
+u32 ShaderSource::getShaderId(const std::string &name)
+{
+	//infostream<<"getShaderId(): \""<<name<<"\""<<std::endl;
+
+	{
+		/*
+			See if shader already exists
+		*/
+		JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+		core::map<std::string, u32>::Node *n;
+		n = m_name_to_id.find(name);
+		if(n != NULL)
+			return n->getValue();
+	}
+
+	/*
+		Get shader
+	*/
+	if(get_current_thread_id() == m_main_thread){
+		return getShaderIdDirect(name);
+	} else {
+		infostream<<"getShaderId(): Queued: name=\""<<name<<"\""<<std::endl;
+
+		// We're gonna ask the result to be put into here
+		ResultQueue<std::string, u32, u8, u8> result_queue;
+
+		// Throw a request in
+		m_get_shader_queue.add(name, 0, 0, &result_queue);
+
+		infostream<<"Waiting for shader from main thread, name=\""
+				<<name<<"\""<<std::endl;
+
+		try{
+			// Wait result for a second
+			GetResult<std::string, u32, u8, u8>
+					result = result_queue.pop_front(1000);
+
+			// Check that at least something worked OK
+			assert(result.key == name);
+
+			return result.item;
+		}
+		catch(ItemNotFoundException &e){
+			infostream<<"Waiting for shader timed out."<<std::endl;
+			return 0;
+		}
+	}
+
+	infostream<<"getShaderId(): Failed"<<std::endl;
+
+	return 0;
+}
+
+/*
+	This method generates all the shaders
+*/
+u32 ShaderSource::getShaderIdDirect(const std::string &name)
+{
+	//infostream<<"getShaderIdDirect(): name=\""<<name<<"\""<<std::endl;
+
+	// Empty name means shader 0
+	if(name == ""){
+		infostream<<"getShaderIdDirect(): name is empty"<<std::endl;
+		return 0;
+	}
+
+	/*
+		Calling only allowed from main thread
+	*/
+	if(get_current_thread_id() != m_main_thread){
+		errorstream<<"ShaderSource::getShaderIdDirect() "
+				"called not from main thread"<<std::endl;
+		return 0;
+	}
+
+	/*
+		See if shader already exists
+	*/
+	{
+		JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+
+		core::map<std::string, u32>::Node *n;
+		n = m_name_to_id.find(name);
+		if(n != NULL){
+			/*infostream<<"getShaderIdDirect(): \""<<name
+					<<"\" found in cache"<<std::endl;*/
+			return n->getValue();
+		}
+	}
+
+	/*infostream<<"getShaderIdDirect(): \""<<name
+			<<"\" NOT found in cache. Creating it."<<std::endl;*/
+
+	ShaderInfo info = generate_shader(name, m_device,
+			m_shader_callback, &m_sourcecache);
+
+	/*
+		Add shader to caches (add dummy shaders too)
+	*/
+
+	JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+
+	u32 id = m_shaderinfo_cache.size();
+	m_shaderinfo_cache.push_back(info);
+	m_name_to_id.insert(name, id);
+
+	/*infostream<<"getShaderIdDirect(): "
+			<<"Returning id="<<id<<" for name \""<<name<<"\""<<std::endl;*/
+
+	return id;
+}
+
+std::string ShaderSource::getShaderName(u32 id)
+{
+	JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+
+	if(id >= m_shaderinfo_cache.size()){
+		errorstream<<"ShaderSource::getShaderName(): id="<<id
+				<<" >= m_shaderinfo_cache.size()="
+				<<m_shaderinfo_cache.size()<<std::endl;
+		return "";
+	}
+
+	return m_shaderinfo_cache[id].name;
+}
+
+ShaderInfo ShaderSource::getShader(u32 id)
+{
+	JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+
+	if(id >= m_shaderinfo_cache.size())
+		return ShaderInfo();
+
+	return m_shaderinfo_cache[id];
+}
+
+void ShaderSource::processQueue()
+{
+	/*
+		Fetch shaders
+	*/
+	if(m_get_shader_queue.size() > 0){
+		GetRequest<std::string, u32, u8, u8>
+				request = m_get_shader_queue.pop();
+
+		/*infostream<<"ShaderSource::processQueue(): "
+				<<"got shader request with "
+				<<"name=\""<<request.key<<"\""
+				<<std::endl;*/
+
+		GetResult<std::string, u32, u8, u8>
+				result;
+		result.key = request.key;
+		result.callers = request.callers;
+		result.item = getShaderIdDirect(request.key);
+
+		request.dest->push_back(result);
+	}
+}
+
+void ShaderSource::insertSourceShader(const std::string &name_of_shader,
+		const std::string &filename, const std::string &program)
+{
+	/*infostream<<"ShaderSource::insertSourceShader(): "
+			"name_of_shader=\""<<name_of_shader<<"\", "
+			"filename=\""<<filename<<"\""<<std::endl;*/
+
+	assert(get_current_thread_id() == m_main_thread);
+
+	m_sourcecache.insert(name_of_shader, filename, program, true);
+}
+
+void ShaderSource::rebuildShaders()
+{
+	JMutexAutoLock lock(m_shaderinfo_cache_mutex);
+
+	/*// Oh well... just clear everything, they'll load sometime.
+	m_shaderinfo_cache.clear();
+	m_name_to_id.clear();*/
+
+	/*
+		FIXME: Old shader materials can't be deleted in Irrlicht,
+		or can they?
+		(This would be nice to do in the destructor too)
+	*/
+
+	// Recreate shaders
+	for(u32 i=0; i<m_shaderinfo_cache.size(); i++){
+		ShaderInfo *info = &m_shaderinfo_cache[i];
+		*info = generate_shader(info->name, m_device,
+				m_shader_callback, &m_sourcecache);
+	}
+}
+
+void ShaderSource::onSetConstants(video::IMaterialRendererServices *services,
+		bool is_highlevel, const std::string &name)
+{
+	for(u32 i=0; i<m_global_setters.size(); i++){
+		IShaderConstantSetter *setter = m_global_setters[i];
+		setter->onSetConstants(services, is_highlevel);
+	}
+}
+ 
+ShaderInfo generate_shader(std::string name, IrrlichtDevice *device,
+		video::IShaderConstantSetCallBack *callback,
+		SourceShaderCache *sourcecache)
+{
+	/*infostream<<"generate_shader(): "
+			"\""<<name<<"\""<<std::endl;*/
+
+	ShaderInfo shaderinfo;
+	shaderinfo.name = name;
+	shaderinfo.material = video::EMT_SOLID;
+
+	/*
+		Get the base material
+	*/
+	std::string base_material_name =
+		trim(sourcecache->getOrLoad(name, "base.txt"));
+	for(s32 i = 0; video::sBuiltInMaterialTypeNames[i] != 0; i++){
+		if(video::sBuiltInMaterialTypeNames[i] == base_material_name){
+			shaderinfo.material = (video::E_MATERIAL_TYPE) i;
+			break;
+		}
+	}
+
+	// 0 = off, 1 = assembly shaders only, 2 = highlevel or assembly
+	s32 enable_shaders = g_settings->getS32("enable_shaders");
+	if(enable_shaders <= 0)
+		return shaderinfo;
+
+	video::IVideoDriver* driver = device->getVideoDriver();
+	assert(driver);
+
+	video::IGPUProgrammingServices *gpu = driver->getGPUProgrammingServices();
+	if(!gpu){
+		errorstream<<"generate_shader(): "
+				"failed to generate \""<<name<<"\", "
+				"GPU programming not supported."
+				<<std::endl;
+		return shaderinfo;
+	}
+
+	// Choose shader language depending on driver type and settings
+	// Then load shaders
+	std::string vertex_program;
+	std::string pixel_program;
+	std::string geometry_program;
+	bool is_highlevel;
+	load_shaders(name, sourcecache, driver->getDriverType(),
+			enable_shaders, vertex_program, pixel_program,
+			geometry_program, is_highlevel);
+
+	// Check hardware/driver support
+	if(vertex_program != "" &&
+			!driver->queryFeature(video::EVDF_VERTEX_SHADER_1_1) &&
+			!driver->queryFeature(video::EVDF_ARB_VERTEX_PROGRAM_1)){
+		infostream<<"generate_shader(): vertex shaders disabled "
+				"because of missing driver/hardware support."
+				<<std::endl;
+		vertex_program = "";
+	}
+	if(pixel_program != "" &&
+			!driver->queryFeature(video::EVDF_PIXEL_SHADER_1_1) &&
+			!driver->queryFeature(video::EVDF_ARB_FRAGMENT_PROGRAM_1)){
+		infostream<<"generate_shader(): pixel shaders disabled "
+				"because of missing driver/hardware support."
+				<<std::endl;
+		pixel_program = "";
+	}
+	if(geometry_program != "" &&
+			!driver->queryFeature(video::EVDF_GEOMETRY_SHADER)){
+		infostream<<"generate_shader(): geometry shaders disabled "
+				"because of missing driver/hardware support."
+				<<std::endl;
+		geometry_program = "";
+	}
+
+	// If no shaders are used, don't make a separate material type
+	if(vertex_program == "" && pixel_program == "" && geometry_program == "")
+		return shaderinfo;
+
+	// Call addHighLevelShaderMaterial() or addShaderMaterial()
+	const c8* vertex_program_ptr = 0;
+	const c8* pixel_program_ptr = 0;
+	const c8* geometry_program_ptr = 0;
+	if(vertex_program != "")
+		vertex_program_ptr = vertex_program.c_str();
+	if(pixel_program != "")
+		pixel_program_ptr = pixel_program.c_str();
+	if(geometry_program != "")
+		geometry_program_ptr = geometry_program.c_str();
+	s32 shadermat = -1;
+	if(is_highlevel){
+		infostream<<"Compiling high level shaders for "<<name<<std::endl;
+		shadermat = gpu->addHighLevelShaderMaterial(
+			vertex_program_ptr,   // Vertex shader program
+			"vertexMain",         // Vertex shader entry point
+			video::EVST_VS_1_1,   // Vertex shader version
+			pixel_program_ptr,    // Pixel shader program
+			"pixelMain",          // Pixel shader entry point
+			video::EPST_PS_1_1,   // Pixel shader version
+			geometry_program_ptr, // Geometry shader program
+			"geometryMain",       // Geometry shader entry point
+			video::EGST_GS_4_0,   // Geometry shader version
+			scene::EPT_TRIANGLES,      // Geometry shader input
+			scene::EPT_TRIANGLE_STRIP, // Geometry shader output
+			0,                         // Support maximum number of vertices
+			callback,             // Set-constant callback
+			shaderinfo.material,  // Base material
+			1                     // Userdata passed to callback
+			);
+
+		if(shadermat == -1){
+			errorstream<<"generate_shader(): "
+					"failed to generate \""<<name<<"\", "
+					"addHighLevelShaderMaterial failed."
+					<<std::endl;
+			return shaderinfo;
+		}
+	}
+	else{
+		infostream<<"Compiling assembly shaders for "<<name<<std::endl;
+		shadermat = gpu->addShaderMaterial(
+			vertex_program_ptr,   // Vertex shader program
+			pixel_program_ptr,    // Pixel shader program
+			callback,             // Set-constant callback
+			shaderinfo.material,  // Base material
+			0                     // Userdata passed to callback
+			);
+
+		if(shadermat == -1){
+			errorstream<<"generate_shader(): "
+					"failed to generate \""<<name<<"\", "
+					"addShaderMaterial failed."
+					<<std::endl;
+			return shaderinfo;
+		}
+	}
+
+	// HACK, TODO: investigate this better
+	// Grab the material renderer once more so minetest doesn't crash on exit
+	driver->getMaterialRenderer(shadermat)->grab();
+
+	// Apply the newly created material type
+	shaderinfo.material = (video::E_MATERIAL_TYPE) shadermat;
+	return shaderinfo;
+}
+
+void load_shaders(std::string name, SourceShaderCache *sourcecache,
+		video::E_DRIVER_TYPE drivertype, s32 enable_shaders,
+		std::string &vertex_program, std::string &pixel_program,
+		std::string &geometry_program, bool &is_highlevel)
+{
+	vertex_program = "";
+	pixel_program = "";
+	geometry_program = "";
+	is_highlevel = false;
+
+	if(enable_shaders >= 2){
+		// Look for high level shaders
+		if(drivertype == video::EDT_DIRECT3D9){
+			// Direct3D 9: HLSL
+			// (All shaders in one file)
+			vertex_program = sourcecache->getOrLoad(name, "d3d9.hlsl");
+			pixel_program = vertex_program;
+			geometry_program = vertex_program;
+		}
+		else if(drivertype == video::EDT_OPENGL){
+			// OpenGL: GLSL
+			vertex_program = sourcecache->getOrLoad(name, "opengl_vertex.glsl");
+			pixel_program = sourcecache->getOrLoad(name, "opengl_fragment.glsl");
+			geometry_program = sourcecache->getOrLoad(name, "opengl_geometry.glsl");
+		}
+		if(vertex_program != "" || pixel_program != "" || geometry_program != ""){
+			is_highlevel = true;
+			return;
+		}
+	}
+
+	if(enable_shaders >= 1){
+		// Look for assembly shaders
+		if(drivertype == video::EDT_DIRECT3D8){
+			// Direct3D 8 assembly shaders
+			vertex_program = sourcecache->getOrLoad(name, "d3d8_vertex.asm");
+			pixel_program = sourcecache->getOrLoad(name, "d3d8_pixel.asm");
+		}
+		else if(drivertype == video::EDT_DIRECT3D9){
+			// Direct3D 9 assembly shaders
+			vertex_program = sourcecache->getOrLoad(name, "d3d9_vertex.asm");
+			pixel_program = sourcecache->getOrLoad(name, "d3d9_pixel.asm");
+		}
+		else if(drivertype == video::EDT_OPENGL){
+			// OpenGL assembly shaders
+			vertex_program = sourcecache->getOrLoad(name, "opengl_vertex.asm");
+			pixel_program = sourcecache->getOrLoad(name, "opengl_fragment.asm");
+		}
+		if(vertex_program != "" || pixel_program != "")
+			return;
+	}
+}

src/shader.h

@@ -0,0 +1,106 @@
+/*
+Minetest-c55
+Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 Kahrl <kahrl@gmx.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef SHADER_HEADER
+#define SHADER_HEADER
+
+#include "irrlichttypes_extrabloated.h"
+#include "threads.h"
+#include <string>
+
+class IGameDef;
+
+/*
+	shader.{h,cpp}: Shader handling stuff.
+*/
+
+/*
+	Gets the path to a shader by first checking if the file
+	  name_of_shader/filename
+	exists in shader_path and if not, using the data path.
+
+	If not found, returns "".
+
+	Utilizes a thread-safe cache.
+*/
+std::string getShaderPath(const std::string &name_of_shader,
+		const std::string &filename);
+
+struct ShaderInfo
+{
+	std::string name;
+	video::E_MATERIAL_TYPE material;
+
+	ShaderInfo(): name(""), material(video::EMT_SOLID) {}
+};
+
+/*
+	Setter of constants for shaders
+*/
+
+namespace irr { namespace video {
+	class IMaterialRendererServices;
+} }
+
+class IShaderConstantSetter
+{
+public:
+	virtual ~IShaderConstantSetter(){};
+	virtual void onSetConstants(video::IMaterialRendererServices *services,
+			bool is_highlevel) = 0;
+};
+
+/*
+	ShaderSource creates and caches shaders.
+*/
+
+class IShaderSource
+{
+public:
+	IShaderSource(){}
+	virtual ~IShaderSource(){}
+	virtual u32 getShaderId(const std::string &name){return 0;}
+	virtual u32 getShaderIdDirect(const std::string &name){return 0;}
+	virtual std::string getShaderName(u32 id){return "";}
+	virtual ShaderInfo getShader(u32 id){return ShaderInfo();}
+	virtual ShaderInfo getShader(const std::string &name){return ShaderInfo();}
+};
+
+class IWritableShaderSource : public IShaderSource
+{
+public:
+	IWritableShaderSource(){}
+	virtual ~IWritableShaderSource(){}
+	virtual u32 getShaderId(const std::string &name){return 0;}
+	virtual u32 getShaderIdDirect(const std::string &name){return 0;}
+	virtual std::string getShaderName(u32 id){return "";}
+	virtual ShaderInfo getShader(u32 id){return ShaderInfo();}
+	virtual ShaderInfo getShader(const std::string &name){return ShaderInfo();}
+
+	virtual void processQueue()=0;
+	virtual void insertSourceShader(const std::string &name_of_shader,
+		const std::string &filename, const std::string &program)=0;
+	virtual void rebuildShaders()=0;
+	virtual void addGlobalConstantSetter(IShaderConstantSetter *setter)=0;
+};
+
+IWritableShaderSource* createShaderSource(IrrlichtDevice *device);
+
+#endif

src/staticobject.cpp

@@ -0,0 +1,92 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "staticobject.h"
+#include "util/serialize.h"
+
+void StaticObject::serialize(std::ostream &os)
+{
+	char buf[12];
+	// type
+	buf[0] = type;
+	os.write(buf, 1);
+	// pos
+	writeV3S32((u8*)buf, v3s32(pos.X*1000,pos.Y*1000,pos.Z*1000));
+	os.write(buf, 12);
+	// data
+	os<<serializeString(data);
+}
+void StaticObject::deSerialize(std::istream &is, u8 version)
+{
+	char buf[12];
+	// type
+	is.read(buf, 1);
+	type = buf[0];
+	// pos
+	is.read(buf, 12);
+	v3s32 intp = readV3S32((u8*)buf);
+	pos.X = (f32)intp.X/1000;
+	pos.Y = (f32)intp.Y/1000;
+	pos.Z = (f32)intp.Z/1000;
+	// data
+	data = deSerializeString(is);
+}
+
+void StaticObjectList::serialize(std::ostream &os)
+{
+	char buf[12];
+	// version
+	buf[0] = 0;
+	os.write(buf, 1);
+	// count
+	u16 count = m_stored.size() + m_active.size();
+	writeU16((u8*)buf, count);
+	os.write(buf, 2);
+	for(core::list<StaticObject>::Iterator
+			i = m_stored.begin();
+			i != m_stored.end(); i++)
+	{
+		StaticObject &s_obj = *i;
+		s_obj.serialize(os);
+	}
+	for(core::map<u16, StaticObject>::Iterator
+			i = m_active.getIterator();
+			i.atEnd()==false; i++)
+	{
+		StaticObject s_obj = i.getNode()->getValue();
+		s_obj.serialize(os);
+	}
+}
+void StaticObjectList::deSerialize(std::istream &is)
+{
+	char buf[12];
+	// version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// count
+	is.read(buf, 2);
+	u16 count = readU16((u8*)buf);
+	for(u16 i=0; i<count; i++)
+	{
+		StaticObject s_obj;
+		s_obj.deSerialize(is, version);
+		m_stored.push_back(s_obj);
+	}
+}
+

src/staticobject.h

@@ -23,7 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "irrlichttypes_bloated.h"
 #include <string>
 #include <sstream>
-#include "util/serialize.h"
+#include "debug.h"
 
 struct StaticObject
 {
@@ -43,33 +43,8 @@ struct StaticObject
 	{
 	}
 
-	void serialize(std::ostream &os)
-	{
-		char buf[12];
-		// type
-		buf[0] = type;
-		os.write(buf, 1);
-		// pos
-		writeV3S32((u8*)buf, v3s32(pos.X*1000,pos.Y*1000,pos.Z*1000));
-		os.write(buf, 12);
-		// data
-		os<<serializeString(data);
-	}
-	void deSerialize(std::istream &is, u8 version)
-	{
-		char buf[12];
-		// type
-		is.read(buf, 1);
-		type = buf[0];
-		// pos
-		is.read(buf, 12);
-		v3s32 intp = readV3S32((u8*)buf);
-		pos.X = (f32)intp.X/1000;
-		pos.Y = (f32)intp.Y/1000;
-		pos.Z = (f32)intp.Z/1000;
-		// data
-		data = deSerializeString(is);
-	}
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is, u8 version);
 };
 
 class StaticObjectList
@@ -110,47 +85,8 @@ class StaticObjectList
 		m_active.remove(id);
 	}
 
-	void serialize(std::ostream &os)
-	{
-		char buf[12];
-		// version
-		buf[0] = 0;
-		os.write(buf, 1);
-		// count
-		u16 count = m_stored.size() + m_active.size();
-		writeU16((u8*)buf, count);
-		os.write(buf, 2);
-		for(core::list<StaticObject>::Iterator
-				i = m_stored.begin();
-				i != m_stored.end(); i++)
-		{
-			StaticObject &s_obj = *i;
-			s_obj.serialize(os);
-		}
-		for(core::map<u16, StaticObject>::Iterator
-				i = m_active.getIterator();
-				i.atEnd()==false; i++)
-		{
-			StaticObject s_obj = i.getNode()->getValue();
-			s_obj.serialize(os);
-		}
-	}
-	void deSerialize(std::istream &is)
-	{
-		char buf[12];
-		// version
-		is.read(buf, 1);
-		u8 version = buf[0];
-		// count
-		is.read(buf, 2);
-		u16 count = readU16((u8*)buf);
-		for(u16 i=0; i<count; i++)
-		{
-			StaticObject s_obj;
-			s_obj.deSerialize(is, version);
-			m_stored.push_back(s_obj);
-		}
-	}
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is);
 	
 	/*
 		NOTE: When an object is transformed to active, it is removed

src/test.cpp

@@ -41,6 +41,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/numeric.h"
 #include "util/serialize.h"
 #include "noise.h" // PseudoRandom used for random data for compression
+#include "clientserver.h" // LATEST_PROTOCOL_VERSION
 
 /*
 	Asserts that the exception occurs
@@ -314,6 +315,26 @@ struct TestSerialization: public TestBase
 	}
 };
 
+struct TestNodedefSerialization: public TestBase
+{
+	void Run()
+	{
+		ContentFeatures f;
+		f.name = "default:stone";
+		for(int i = 0; i < 6; i++)
+			f.tiledef[i].name = "default_stone.png";
+		f.is_ground_content = true;
+		std::ostringstream os(std::ios::binary);
+		f.serialize(os, LATEST_PROTOCOL_VERSION);
+		verbosestream<<"Test ContentFeatures size: "<<os.str().size()<<std::endl;
+		std::istringstream is(os.str(), std::ios::binary);
+		ContentFeatures f2;
+		f2.deSerialize(is);
+		UASSERT(f.walkable == f2.walkable);
+		UASSERT(f.node_box.type == f2.node_box.type);
+	}
+};
+
 struct TestCompress: public TestBase
 {
 	void Run()
@@ -1736,6 +1757,7 @@ void run_tests()
 	TEST(TestSettings);
 	TEST(TestCompress);
 	TEST(TestSerialization);
+	TEST(TestNodedefSerialization);
 	TESTPARAMS(TestMapNode, ndef);
 	TESTPARAMS(TestVoxelManipulator, ndef);
 	TESTPARAMS(TestVoxelAlgorithms, ndef);

src/tile.cpp

@@ -372,6 +372,18 @@ class TextureSource : public IWritableTextureSource
 	// Update new texture pointer and texture coordinates to an
 	// AtlasPointer based on it's texture id
 	void updateAP(AtlasPointer &ap);
+ 
+	bool isKnownSourceImage(const std::string &name)
+	{
+		bool is_known = false;
+		bool cache_found = m_source_image_existence.get(name, &is_known);
+		if(cache_found)
+			return is_known;
+		// Not found in cache; find out if a local file exists
+		is_known = (getTexturePath(name) != "");
+		m_source_image_existence.set(name, is_known);
+		return is_known;
+	}
 
 	// Processes queued texture requests from other threads.
 	// Shall be called from the main thread.
@@ -400,6 +412,9 @@ class TextureSource : public IWritableTextureSource
 	// This should be only accessed from the main thread
 	SourceImageCache m_sourcecache;
 
+	// Thread-safe cache of what source images are known (true = known)
+	MutexedMap<std::string, bool> m_source_image_existence;
+
 	// A texture id is index in this array.
 	// The first position contains a NULL texture.
 	core::array<SourceAtlasPointer> m_atlaspointer_cache;
@@ -781,6 +796,7 @@ void TextureSource::insertSourceImage(const std::string &name, video::IImage *im
 	assert(get_current_thread_id() == m_main_thread);
 	
 	m_sourcecache.insert(name, img, true, m_device->getVideoDriver());
+	m_source_image_existence.set(name, true);
 }
 	
 void TextureSource::rebuildImagesAndTextures()

src/tile.h

@@ -131,6 +131,7 @@ class ITextureSource
 	virtual IrrlichtDevice* getDevice()
 		{return NULL;}
 	virtual void updateAP(AtlasPointer &ap){};
+	virtual bool isKnownSourceImage(const std::string &name)=0;
 };
 
 class IWritableTextureSource : public ITextureSource
@@ -149,6 +150,7 @@ class IWritableTextureSource : public ITextureSource
 	virtual IrrlichtDevice* getDevice()
 		{return NULL;}
 	virtual void updateAP(AtlasPointer &ap){};
+	virtual bool isKnownSourceImage(const std::string &name)=0;
 
 	virtual void processQueue()=0;
 	virtual void insertSourceImage(const std::string &name, video::IImage *img)=0;
@@ -159,10 +161,9 @@ class IWritableTextureSource : public ITextureSource
 IWritableTextureSource* createTextureSource(IrrlichtDevice *device);
 
 enum MaterialType{
-	MATERIAL_ALPHA_NONE,
-	MATERIAL_ALPHA_VERTEX,
-	MATERIAL_ALPHA_SIMPLE, // >127 = opaque
-	MATERIAL_ALPHA_BLEND,
+	TILE_MATERIAL_BASIC,
+	TILE_MATERIAL_LIQUID_TRANSPARENT,
+	TILE_MATERIAL_LIQUID_OPAQUE,
 };
 
 // Material flags
@@ -176,6 +177,8 @@ enum MaterialType{
 // Animation made up by splitting the texture to vertical frames, as
 // defined by extra parameters
 #define MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES 0x08
+// Whether liquid shader should be used
+#define MATERIAL_FLAG_
 
 /*
 	This fully defines the looks of a tile.
@@ -186,9 +189,7 @@ struct TileSpec
 	TileSpec():
 		texture(0),
 		alpha(255),
-		//material_type(MATERIAL_ALPHA_NONE),
-		// Use this so that leaves don't need a separate material
-		material_type(MATERIAL_ALPHA_SIMPLE),
+		material_type(TILE_MATERIAL_BASIC),
 		material_flags(
 			//0 // <- DEBUG, Use the one below
 			MATERIAL_FLAG_BACKFACE_CULLING
@@ -216,15 +217,34 @@ struct TileSpec
 	// Sets everything else except the texture in the material
 	void applyMaterialOptions(video::SMaterial &material) const
 	{
-		if(material_type == MATERIAL_ALPHA_NONE)
-			material.MaterialType = video::EMT_SOLID;
-		else if(material_type == MATERIAL_ALPHA_VERTEX)
-			material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
-		else if(material_type == MATERIAL_ALPHA_SIMPLE)
+		switch(material_type){
+		case TILE_MATERIAL_BASIC:
 			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-		else if(material_type == MATERIAL_ALPHA_BLEND)
-			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-
+			break;
+		case TILE_MATERIAL_LIQUID_TRANSPARENT:
+			material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
+			break;
+		case TILE_MATERIAL_LIQUID_OPAQUE:
+			material.MaterialType = video::EMT_SOLID;
+			break;
+		}
+		material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING) ? true : false;
+	}
+	void applyMaterialOptionsWithShaders(video::SMaterial &material,
+			const video::E_MATERIAL_TYPE &basic,
+			const video::E_MATERIAL_TYPE &liquid) const
+	{
+		switch(material_type){
+		case TILE_MATERIAL_BASIC:
+			material.MaterialType = basic;
+			break;
+		case TILE_MATERIAL_LIQUID_TRANSPARENT:
+			material.MaterialType = liquid;
+			break;
+		case TILE_MATERIAL_LIQUID_OPAQUE:
+			material.MaterialType = liquid;
+			break;
+		}
 		material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING) ? true : false;
 	}
 	

src/util/container.h

@@ -107,6 +107,17 @@ class MutexedMap
 		return true;
 	}
 
+	core::list<Value> getValues()
+	{
+		core::list<Value> result;
+		for(typename core::map<Key, Value>::Iterator
+				i = m_values.getIterator();
+				i.atEnd() == false; i++){
+			result.push_back(i.getNode()->getValue());
+		}
+		return result;
+	}
+
 private:
 	core::map<Key, Value> m_values;
 	JMutex m_mutex;

src/util/pointer.h

@@ -222,7 +222,7 @@ class SharedBuffer
 	/*
 		Copies whole buffer
 	*/
-	SharedBuffer(T *t, unsigned int size)
+	SharedBuffer(const T *t, unsigned int size)
 	{
 		m_size = size;
 		if(m_size != 0)

src/util/serialize.h

@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define UTIL_SERIALIZE_HEADER
 
 #include "../irrlichttypes.h"
+#include "../irrlichttypes_bloated.h"
 #include "../irr_v2d.h"
 #include "../irr_v3d.h"
 #include <iostream>
@@ -59,7 +60,7 @@ inline void writeU8(u8 *data, u8 i)
 	data[0] = ((i>> 0)&0xff);
 }
 
-inline u64 readU64(u8 *data)
+inline u64 readU64(const u8 *data)
 {
 	return ((u64)data[0]<<56) | ((u64)data[1]<<48)
 		| ((u64)data[2]<<40) | ((u64)data[3]<<32)
@@ -67,17 +68,17 @@ inline u64 readU64(u8 *data)
 		| ((u64)data[6]<<8) | ((u64)data[7]<<0);
 }
 
-inline u32 readU32(u8 *data)
+inline u32 readU32(const u8 *data)
 {
 	return (data[0]<<24) | (data[1]<<16) | (data[2]<<8) | (data[3]<<0);
 }
 
-inline u16 readU16(u8 *data)
+inline u16 readU16(const u8 *data)
 {
 	return (data[0]<<8) | (data[1]<<0);
 }
 
-inline u8 readU8(u8 *data)
+inline u8 readU8(const u8 *data)
 {
 	return (data[0]<<0);
 }
@@ -85,28 +86,28 @@ inline u8 readU8(u8 *data)
 inline void writeS32(u8 *data, s32 i){
 	writeU32(data, (u32)i);
 }
-inline s32 readS32(u8 *data){
+inline s32 readS32(const u8 *data){
 	return (s32)readU32(data);
 }
 
 inline void writeS16(u8 *data, s16 i){
 	writeU16(data, (u16)i);
 }
-inline s16 readS16(u8 *data){
+inline s16 readS16(const u8 *data){
 	return (s16)readU16(data);
 }
 
 inline void writeS8(u8 *data, s8 i){
 	writeU8(data, (u8)i);
 }
-inline s8 readS8(u8 *data){
+inline s8 readS8(const u8 *data){
 	return (s8)readU8(data);
 }
 
 inline void writeF1000(u8 *data, f32 i){
 	writeS32(data, i*1000);
 }
-inline f32 readF1000(u8 *data){
+inline f32 readF1000(const u8 *data){
 	return (f32)readS32(data)/1000.;
 }
 
@@ -116,7 +117,7 @@ inline void writeV3S32(u8 *data, v3s32 p)
 	writeS32(&data[4], p.Y);
 	writeS32(&data[8], p.Z);
 }
-inline v3s32 readV3S32(u8 *data)
+inline v3s32 readV3S32(const u8 *data)
 {
 	v3s32 p;
 	p.X = readS32(&data[0]);
@@ -131,7 +132,7 @@ inline void writeV3F1000(u8 *data, v3f p)
 	writeF1000(&data[4], p.Y);
 	writeF1000(&data[8], p.Z);
 }
-inline v3f readV3F1000(u8 *data)
+inline v3f readV3F1000(const u8 *data)
 {
 	v3f p;
 	p.X = (float)readF1000(&data[0]);
@@ -145,7 +146,7 @@ inline void writeV2F1000(u8 *data, v2f p)
 	writeF1000(&data[0], p.X);
 	writeF1000(&data[4], p.Y);
 }
-inline v2f readV2F1000(u8 *data)
+inline v2f readV2F1000(const u8 *data)
 {
 	v2f p;
 	p.X = (float)readF1000(&data[0]);
@@ -159,7 +160,7 @@ inline void writeV2S16(u8 *data, v2s16 p)
 	writeS16(&data[2], p.Y);
 }
 
-inline v2s16 readV2S16(u8 *data)
+inline v2s16 readV2S16(const u8 *data)
 {
 	v2s16 p;
 	p.X = readS16(&data[0]);
@@ -173,7 +174,7 @@ inline void writeV2S32(u8 *data, v2s32 p)
 	writeS32(&data[2], p.Y);
 }
 
-inline v2s32 readV2S32(u8 *data)
+inline v2s32 readV2S32(const u8 *data)
 {
 	v2s32 p;
 	p.X = readS32(&data[0]);
@@ -188,7 +189,7 @@ inline void writeV3S16(u8 *data, v3s16 p)
 	writeS16(&data[4], p.Z);
 }
 
-inline v3s16 readV3S16(u8 *data)
+inline v3s16 readV3S16(const u8 *data)
 {
 	v3s16 p;
 	p.X = readS16(&data[0]);
@@ -197,6 +198,24 @@ inline v3s16 readV3S16(u8 *data)
 	return p;
 }
 
+inline void writeARGB8(u8 *data, video::SColor p)
+{
+	writeU8(&data[0], p.getAlpha());
+	writeU8(&data[1], p.getRed());
+	writeU8(&data[2], p.getGreen());
+	writeU8(&data[3], p.getBlue());
+}
+
+inline video::SColor readARGB8(const u8 *data)
+{
+	video::SColor p;
+	p.setAlpha(readU8(&data[0]));
+	p.setRed(readU8(&data[1]));
+	p.setGreen(readU8(&data[2]));
+	p.setBlue(readU8(&data[3]));
+	return p;
+}
+
 /*
 	The above stuff directly interfaced to iostream
 */
@@ -344,6 +363,20 @@ inline v3s16 readV3S16(std::istream &is)
 	return readV3S16((u8*)buf);
 }
 
+inline void writeARGB8(std::ostream &os, video::SColor p)
+{
+	char buf[4] = {0};
+	writeARGB8((u8*)buf, p);
+	os.write(buf, 4);
+}
+
+inline video::SColor readARGB8(std::istream &is)
+{
+	char buf[4] = {0};
+	is.read(buf, 4);
+	return readARGB8((u8*)buf);
+}
+
 /*
 	More serialization stuff
 */