added player link support

src/CMakeLists.txt

@@ -107,6 +107,13 @@ set(common_SRCS
 	scriptapi.cpp
 	script.cpp
 	log.cpp
+	content_sao_firefly.cpp
+	content_sao_item.cpp
+	content_sao_lua.cpp
+	content_sao_mobv2.cpp
+	content_sao_oerkki1.cpp
+	content_sao_rat.cpp
+	content_sao_test.cpp
 	content_sao.cpp
 	mapgen.cpp
 	content_nodemeta.cpp
@@ -115,6 +122,7 @@ set(common_SRCS
 	collision.cpp
 	nodemetadata.cpp
 	serverobject.cpp
+	serverlinkableobject.cpp
 	noise.cpp
 	mineral.cpp
 	porting.cpp
@@ -161,6 +169,14 @@ set(minetest_SRCS
 	${common_SRCS}
 	content_mapblock.cpp
 	content_cao.cpp
+	content_cao_player.cpp
+	content_cao_item.cpp
+	content_cao_lua.cpp
+	content_cao_rat.cpp
+	content_cao_oerkki1.cpp
+	content_cao_firefly.cpp
+	content_cao_mobv2.cpp
+	content_cao_test.cpp
 	mesh.cpp
 	mapblock_mesh.cpp
 	farmesh.cpp
@@ -168,6 +184,7 @@ set(minetest_SRCS
 	camera.cpp
 	clouds.cpp
 	clientobject.cpp
+	clientlinkableobject.cpp
 	guiMainMenu.cpp
 	guiKeyChangeMenu.cpp
 	guiMessageMenu.cpp

src/clientlinkableobject.cpp

@@ -0,0 +1,123 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 sapier sapier at gmx dot 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 "clientlinkableobject.h"
+
+ClientLinkableObject::ClientLinkableObject() {
+
+	this->m_Parent = NULL;
+}
+
+ClientLinkableObject::~ClientLinkableObject() {
+	if (this->isLinked())
+		this->unlink(this);
+}
+
+
+void ClientLinkableObject::link(ClientLinkableObject* entity) {
+	//TODO check if entity is already linkt (shouldn't be the case but just to be sure)
+	this->m_LinkedObjects.push_back(entity);
+}
+
+void ClientLinkableObject::unlink(ClientLinkableObject* entity) {
+	this->m_LinkedObjects.remove(entity);
+}
+
+
+void ClientLinkableObject::stepLinkedObjects(v3f pos,float dtime) {
+	for(std::list<ClientLinkableObject*>::iterator i = this->m_LinkedObjects.begin();
+			i != this->m_LinkedObjects.end(); i++) {
+			(*i)->setPosition(pos,dtime);
+	}
+}
+
+bool ClientLinkableObject::handleLinkUnlinkMessages(u8 cmd,std::istringstream* is,ClientEnvironment *m_env) {
+	if(cmd == AO_Message_type::Link) // Link entity
+		{
+			//Object to link entity to
+			u16 object_id = readU16(*is);
+			//offset against linked object
+			v3f offset    = readV3F1000(*is);
+
+			ClientActiveObject* parent_cao = m_env->getActiveObject(object_id);
+
+			ClientLinkableObject* parent = dynamic_cast<ClientLinkableObject*>(parent_cao);
+
+			if (parent != NULL) {
+				this->linkEntity(offset,parent);
+			}
+			else {
+				errorstream << "Invalid object to link to!" << std::endl;
+			}
+			return true;
+
+		}
+	else if(cmd == AO_Message_type::UnLink) // UnLink entity
+		{
+			if (this->m_Parent == NULL) {
+				errorstream << "Unlinking object not linked!" << std::endl;
+			}
+
+			this->unlinkEntity();
+			return true;
+		}
+
+	return false;
+}
+
+
+bool ClientLinkableObject::linkEntity(v3f offset, ClientLinkableObject* parent) {
+	//already linked unlink first
+	if (this->m_Parent != NULL) {
+		return false;
+	}
+
+	//TODO add linkchain support
+	if (this->m_LinkedObjects.size() > 0) {
+		return false;
+	}
+
+	parent->link(this);
+	updateLinkState(true);
+	this->m_linkOffset 	= offset;
+	this->m_Parent 	 	= parent;
+	return true;
+}
+
+
+bool ClientLinkableObject::unlinkEntity() {
+	if (this->m_Parent != NULL) {
+
+			updateLinkState(false);
+			this->m_Parent->unlink(this);
+			this->m_Parent = NULL;
+			return true;
+
+		}
+
+		return false;
+}
+
+bool ClientLinkableObject::isLinked() {
+	if (this->m_Parent != NULL)
+		return true;
+	else
+		return false;
+}

src/clientlinkableobject.h

@@ -0,0 +1,65 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 sapier sapier at gmx dot 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 CLIENTLINKABLEOBJECT_H_
+#define CLIENTLINKABLEOBJECT_H_
+
+#include <list>
+#include <sstream>
+#include <irrlichttypes.h>
+#include "clientobject.h"
+#include "environment.h"
+#include "content_object.h"
+#include "utility.h"
+#include "log.h"
+
+class ClientLinkableObject {
+	public:
+		ClientLinkableObject();
+		~ClientLinkableObject();
+		//internal communication between entitys NOT to be used by user
+		void link(ClientLinkableObject* entity);
+		void unlink(ClientLinkableObject* entity);
+
+		virtual void setPosition(v3f toset, float dtime) = 0;
+		virtual void updateLinkState(bool value) = 0;
+
+	protected:
+		void stepLinkedObjects(v3f pos,float dtime);
+
+		bool handleLinkUnlinkMessages(u8 cmd,std::istringstream* is,ClientEnvironment *m_env);
+
+
+		//user driven functions (exported by lua)
+		bool linkEntity(v3f offset, ClientLinkableObject* parent);
+		bool unlinkEntity();
+
+		bool isLinked();
+		v3f  m_linkOffset;
+
+
+	private:
+		ClientLinkableObject* m_Parent;
+
+		std::list<ClientLinkableObject*> m_LinkedObjects;
+};
+
+
+#endif /* CLIENTLINKABLEOBJECT_H_ */

src/clientobject.cpp

@@ -43,8 +43,8 @@ ClientActiveObject* ClientActiveObject::create(u8 type, IGameDef *gamedef,
 		ClientEnvironment *env)
 {
 	// Find factory function
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(type);
+	core::map<u8, Factory>::Node *n;
+	n = ClientActiveObject::getTypes().find(type);
 	if(n == NULL)
 	{
 		// If factory is not found, just return.
@@ -58,13 +58,13 @@ ClientActiveObject* ClientActiveObject::create(u8 type, IGameDef *gamedef,
 	return object;
 }
 
-void ClientActiveObject::registerType(u16 type, Factory f)
+void ClientActiveObject::registerType(u8 type, Factory f)
 {
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(type);
+	core::map<u8, Factory>::Node *n;
+	n = ClientActiveObject::getTypes().find(type);
 	if(n)
 		return;
-	m_types.insert(type, f);
+	ClientActiveObject::getTypes().insert(type, f);
 }
 
 

src/clientobject.h

@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010-2011 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 General Public License as published by
@@ -81,12 +81,16 @@ class ClientActiveObject : public ActiveObject
 protected:
 	// Used for creating objects based on type
 	typedef ClientActiveObject* (*Factory)(IGameDef *gamedef, ClientEnvironment *env);
-	static void registerType(u16 type, Factory f);
+	static void registerType(u8 type, Factory f);
+
 	IGameDef *m_gamedef;
 	ClientEnvironment *m_env;
 private:
-	// Used for creating objects based on type
-	static core::map<u16, Factory> m_types;
+    static core::map<u8, Factory>& getTypes()
+    {
+        static core::map<u8, Factory> types;
+        return types;
+    }
 };
 
 struct DistanceSortedActiveObject

src/content_abm.cpp

@@ -23,6 +23,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "gamedef.h"
 #include "nodedef.h"
 #include "content_sao.h"
+#include "content_sao_rat.h"
+#include "content_sao_mobv2.h"
+#include "content_sao_oerkki1.h"
 #include "settings.h"
 #include "mapblock.h" // For getNodeBlockPos
 #include "mapgen.h" // For mapgen::make_tree

src/content_cao.h

@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010-2011 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 General Public License as published by
@@ -20,5 +20,104 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef CONTENT_CAO_HEADER
 #define CONTENT_CAO_HEADER
 
+#include "tile.h"
+#include "environment.h"
+#include "settings.h"
+#include <ICameraSceneNode.h>
+#include <ITextSceneNode.h>
+#include <IBillboardSceneNode.h>
+#include "serialization.h" // For decompressZlib
+#include "gamedef.h"
+#include "clientobject.h"
+#include "content_object.h"
+#include "mesh.h"
+#include "utility.h" // For IntervalLimiter
+
+class Settings;
+
+/*
+	SmoothTranslator
+*/
+
+struct SmoothTranslator
+{
+	v3f vect_old;
+	v3f vect_show;
+	v3f vect_aim;
+	f32 anim_counter;
+	f32 anim_time;
+	f32 anim_time_counter;
+	bool aim_is_end;
+
+	SmoothTranslator():
+		vect_old(0,0,0),
+		vect_show(0,0,0),
+		vect_aim(0,0,0),
+		anim_counter(0),
+		anim_time(0),
+		anim_time_counter(0),
+		aim_is_end(true)
+	{}
+
+	void init(v3f vect)
+	{
+		vect_old = vect;
+		vect_show = vect;
+		vect_aim = vect;
+		anim_counter = 0;
+		anim_time = 0;
+		anim_time_counter = 0;
+		aim_is_end = true;
+	}
+
+	void sharpen()
+	{
+		init(vect_show);
+	}
+
+	void update(v3f vect_new, bool is_end_position=false, float update_interval=-1)
+	{
+		aim_is_end = is_end_position;
+		vect_old = vect_show;
+		vect_aim = vect_new;
+		if(update_interval > 0){
+			anim_time = update_interval;
+		} else {
+			if(anim_time < 0.001 || anim_time > 1.0)
+				anim_time = anim_time_counter;
+			else
+				anim_time = anim_time * 0.9 + anim_time_counter * 0.1;
+		}
+		anim_time_counter = 0;
+		anim_counter = 0;
+	}
+
+	void translate(f32 dtime)
+	{
+		anim_time_counter = anim_time_counter + dtime;
+		anim_counter = anim_counter + dtime;
+		v3f vect_move = vect_aim - vect_old;
+		f32 moveratio = 1.0;
+		if(anim_time > 0.001)
+			moveratio = anim_time_counter / anim_time;
+		// Move a bit less than should, to avoid oscillation
+		moveratio = moveratio * 0.8;
+		float move_end = 1.5;
+		if(aim_is_end)
+			move_end = 1.0;
+		if(moveratio > move_end)
+			moveratio = move_end;
+		vect_show = vect_old + vect_move * moveratio;
+	}
+
+	bool is_moving()
+	{
+		return ((anim_time_counter / anim_time) < 1.4);
+	}
+};
+
+void setBillboardTextureMatrix(scene::IBillboardSceneNode *bill,
+		float txs, float tys, int col, int row);
+
 #endif
 

src/content_cao_firefly.cpp

@@ -0,0 +1,181 @@
+/*
+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 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 "content_cao.h"
+
+/*
+	FireflyCAO
+*/
+class FireflyCAO : public ClientActiveObject
+{
+public:
+	FireflyCAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS/2.,BS/3.),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0)),
+		m_yaw(0)
+	{
+		registerType(getType(), create);
+	};
+
+	~FireflyCAO()
+	{
+	}
+
+	inline u8 getType() const	{	return ACTIVEOBJECT_TYPE_FIREFLY;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new FireflyCAO(gamedef, env);
+	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+		scene::SMesh *mesh = new scene::SMesh();
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		video::SColor c(255,255,255,255);
+		video::S3DVertex vertices[4] =
+		{
+			video::S3DVertex(0,0,0, 0,0,0, c, 0,1),
+			video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
+			video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
+			video::S3DVertex(0,BS/2,0, 0,0,0, c, 0,0),
+		};
+		u16 indices[] = {0,1,2,2,3,0};
+		buf->append(vertices, 4, indices, 6);
+		// Set material
+		buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+		buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+		//buf->getMaterial().setTexture(0, NULL);
+		buf->getMaterial().setTexture(0, tsrc->getTextureRaw("firefly.png"));
+		buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+		buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+		buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+		// Add to mesh
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+		m_node = smgr->addMeshSceneNode(mesh, NULL);
+		mesh->drop();
+		// Set it to use the materials of the meshbuffers directly.
+		// This is needed for changing the texture in the future
+		m_node->setReadOnlyMaterials(true);
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		if(m_node == NULL)
+			return;
+
+		u8 li = 255;
+		video::SColor color(255,li,li,li);
+		setMeshColor(m_node->getMesh(), color);
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position+v3f(0,BS*0.5,0), BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		//m_node->setPosition(m_position);
+		m_node->setPosition(pos_translator.vect_show);
+
+		v3f rot = m_node->getRotation();
+		rot.Y = 180.0 - m_yaw;
+		m_node->setRotation(rot);
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		pos_translator.translate(dtime);
+		updateNodePos();
+	}
+
+	void processMessage(const std::string &data)
+	{
+		//infostream<<"FireflyCAO: Got message"<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.update(m_position);
+			// yaw
+			m_yaw = readF1000(is);
+			updateNodePos();
+		}
+	}
+
+	void initialize(const std::string &data)
+	{
+		//infostream<<"FireflyCAO: Got init data"<<std::endl;
+
+		{
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0)
+				return;
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.init(m_position);
+		}
+
+		updateNodePos();
+	}
+
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+
+	v3f getPosition()
+		{return m_position;}
+
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+};
+
+// Prototype
+FireflyCAO proto_FireflyCAO(NULL, NULL);
+

src/content_cao_item.cpp

@@ -0,0 +1,239 @@
+/*
+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 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 "content_cao.h"
+#include "inventory.h"
+/*
+	ItemCAO
+*/
+
+class ItemCAO : public ClientActiveObject
+{
+public:
+	ItemCAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0))
+	{
+		if(!gamedef && !env)
+		{
+			ClientActiveObject::registerType(getType(), create);
+		}
+	}
+
+	~ItemCAO()
+	{
+	}
+
+	inline u8 getType() const
+	{	return ACTIVEOBJECT_TYPE_ITEM;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new ItemCAO(gamedef, env);
+	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+
+		scene::SMesh *mesh = new scene::SMesh();
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		video::SColor c(255,255,255,255);
+		video::S3DVertex vertices[4] =
+		{
+			/*video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
+			video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
+			video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
+			video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),*/
+			video::S3DVertex(BS/3.,0,0, 0,0,0, c, 0,1),
+			video::S3DVertex(-BS/3.,0,0, 0,0,0, c, 1,1),
+			video::S3DVertex(-BS/3.,0+BS*2./3.,0, 0,0,0, c, 1,0),
+			video::S3DVertex(BS/3.,0+BS*2./3.,0, 0,0,0, c, 0,0),
+		};
+		u16 indices[] = {0,1,2,2,3,0};
+		buf->append(vertices, 4, indices, 6);
+		// Set material
+		buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+		buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+		// Initialize with a generated placeholder texture
+		buf->getMaterial().setTexture(0, tsrc->getTextureRaw(""));
+		buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+		buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+		buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+		// Add to mesh
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+		m_node = smgr->addMeshSceneNode(mesh, NULL);
+		mesh->drop();
+		// Set it to use the materials of the meshbuffers directly.
+		// This is needed for changing the texture in the future
+		m_node->setReadOnlyMaterials(true);
+		updateNodePos();
+
+		/*
+			Update image of node
+		*/
+
+		// Create an inventory item to see what is its image
+		std::istringstream is(m_inventorystring, std::ios_base::binary);
+		video::ITexture *texture = NULL;
+		try{
+			InventoryItem *item = NULL;
+			item = InventoryItem::deSerialize(is, m_gamedef);
+			infostream<<__FUNCTION_NAME<<": m_inventorystring=\""
+					<<m_inventorystring<<"\" -> item="<<item
+					<<std::endl;
+			if(item)
+			{
+				texture = item->getImage();
+				delete item;
+			}
+		}
+		catch(SerializationError &e)
+		{
+			infostream<<"WARNING: "<<__FUNCTION_NAME
+					<<": error deSerializing inventorystring \""
+					<<m_inventorystring<<"\""<<std::endl;
+		}
+
+		// Set meshbuffer texture
+		buf->getMaterial().setTexture(0, texture);
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		if(m_node == NULL)
+			return;
+
+		u8 li = decode_light(light_at_pos);
+		video::SColor color(255,li,li,li);
+		setMeshColor(m_node->getMesh(), color);
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position, BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->setPosition(m_position);
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		if(m_node)
+		{
+			/*v3f rot = m_node->getRotation();
+			rot.Y += dtime * 120;
+			m_node->setRotation(rot);*/
+			LocalPlayer *player = env->getLocalPlayer();
+			assert(player);
+			v3f rot = m_node->getRotation();
+			rot.Y = 180.0 - (player->getYaw());
+			m_node->setRotation(rot);
+		}
+	}
+
+	void processMessage(const std::string &data)
+	{
+		//infostream<<"ItemCAO: Got message"<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			// pos
+			m_position = readV3F1000(is);
+			updateNodePos();
+		}
+	}
+
+	void initialize(const std::string &data)
+	{
+		infostream<<"ItemCAO: Got init data"<<std::endl;
+
+		{
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0)
+				return;
+			// pos
+			m_position = readV3F1000(is);
+			// inventorystring
+			m_inventorystring = deSerializeString(is);
+		}
+
+		updateNodePos();
+
+		/*
+			Set infotext to item name if item cannot be deserialized
+		*/
+		try{
+			InventoryItem *item = NULL;
+			item = InventoryItem::deSerialize(m_inventorystring, m_gamedef);
+			if(item){
+				if(!item->isKnown())
+					m_infotext = "Unknown item: '" + m_inventorystring + "'";
+			}
+			delete item;
+		}
+		catch(SerializationError &e)
+		{
+			m_infotext = "Unknown item: '" + m_inventorystring + "'";
+		}
+	}
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+	v3f getPosition()
+		{return m_position;}
+
+	std::string infoText()
+		{return m_infotext;}
+
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	std::string m_inventorystring;
+	std::string m_infotext;
+};
+
+// Prototype
+ItemCAO proto_ItemCAO(NULL, NULL);

src/content_cao_lua.cpp

@@ -0,0 +1,426 @@
+/*
+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 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 <list>
+#include "content_cao.h"
+#include "luaentity_common.h"
+#include "clientlinkableobject.h"
+
+class LuaEntityCAO : public ClientActiveObject, public ClientLinkableObject
+{
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_meshnode;
+	scene::IBillboardSceneNode *m_spritenode;
+	v3f m_position;
+	v3f m_velocity;
+	v3f m_acceleration;
+	float m_yaw;
+	struct LuaEntityProperties *m_prop;
+	SmoothTranslator pos_translator;
+	// Spritesheet/animation stuff
+	v2f m_tx_size;
+	v2s16 m_tx_basepos;
+	bool m_tx_select_horiz_by_yawpitch;
+	int m_anim_frame;
+	int m_anim_num_frames;
+	float m_anim_framelength;
+	float m_anim_timer;
+public:
+
+	inline u8 getType() const	{ return ACTIVEOBJECT_TYPE_LUAENTITY; }
+
+	inline core::aabbox3d<f32>* getSelectionBox()
+	{ return &m_selection_box;	}
+
+	inline v3f getPosition()
+	{ return pos_translator.vect_show;	}
+
+	LuaEntityCAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-BS/3.,-BS/3.,-BS/3., BS/3.,BS/3.,BS/3.),
+		m_meshnode(NULL),
+		m_spritenode(NULL),
+		m_position(v3f(0,10*BS,0)),
+		m_velocity(v3f(0,0,0)),
+		m_acceleration(v3f(0,0,0)),
+		m_yaw(0),
+		m_prop(new LuaEntityProperties),
+		m_tx_size(1,1),
+		m_tx_basepos(0,0),
+		m_tx_select_horiz_by_yawpitch(false),
+		m_anim_frame(0),
+		m_anim_num_frames(1),
+		m_anim_framelength(0.2),
+		m_anim_timer(0)
+	{
+		if(gamedef == NULL)
+			ClientActiveObject::registerType(LuaEntityCAO::getType(), LuaEntityCAO::create);
+
+	}
+
+	void initialize(const std::string &data)
+	{
+		infostream<<"LuaEntityCAO: Got init data"<<std::endl;
+
+		std::istringstream is(data, std::ios::binary);
+		// version
+		u8 version = readU8(is);
+		// check version
+		if(version != 0)
+			return;
+		// pos
+		m_position = readV3F1000(is);
+		// yaw
+		m_yaw = readF1000(is);
+		// properties
+		std::istringstream prop_is(deSerializeLongString(is), std::ios::binary);
+		m_prop->deSerialize(prop_is);
+
+		infostream<<"m_prop: "<<m_prop->dump()<<std::endl;
+
+		m_selection_box = m_prop->collisionbox;
+		m_selection_box.MinEdge *= BS;
+		m_selection_box.MaxEdge *= BS;
+
+		pos_translator.init(m_position);
+
+		m_tx_size.X = 1.0 / m_prop->spritediv.X;
+		m_tx_size.Y = 1.0 / m_prop->spritediv.Y;
+		m_tx_basepos.X = m_tx_size.X * m_prop->initial_sprite_basepos.X;
+		m_tx_basepos.Y = m_tx_size.Y * m_prop->initial_sprite_basepos.Y;
+
+		updateNodePos();
+	}
+
+	~LuaEntityCAO()
+	{
+		delete m_prop;
+	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new LuaEntityCAO(gamedef, env);
+	}
+
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+			IrrlichtDevice *irr)
+	{
+		if(m_meshnode != NULL || m_spritenode != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+
+		if(m_prop->visual == "sprite"){
+			infostream<<"LuaEntityCAO::addToScene(): single_sprite"<<std::endl;
+			m_spritenode = smgr->addBillboardSceneNode(
+					NULL, v2f(1, 1), v3f(0,0,0), -1);
+			m_spritenode->setMaterialTexture(0,
+					tsrc->getTextureRaw("unknown_block.png"));
+			m_spritenode->setMaterialFlag(video::EMF_LIGHTING, false);
+			m_spritenode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+			m_spritenode->setMaterialType(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF);
+			m_spritenode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+			m_spritenode->setColor(video::SColor(255,0,0,0));
+			m_spritenode->setVisible(false); /* Set visible when brightness is known */
+			m_spritenode->setSize(m_prop->visual_size*BS);
+			{
+				const float txs = 1.0 / 1;
+				const float tys = 1.0 / 1;
+				setBillboardTextureMatrix(m_spritenode,
+						txs, tys, 0, 0);
+			}
+		} else if(m_prop->visual == "cube"){
+			infostream<<"LuaEntityCAO::addToScene(): cube"<<std::endl;
+			scene::IMesh *mesh = createCubeMesh(v3f(BS,BS,BS));
+			m_meshnode = smgr->addMeshSceneNode(mesh, NULL);
+			mesh->drop();
+			
+			m_meshnode->setScale(v3f(1));
+			// Will be shown when we know the brightness
+			m_meshnode->setVisible(false);
+		} else if (m_prop->visual == "plant") {
+			infostream<<"LuaEntityCAO::addToScene(): plant"<<std::endl;
+			scene::IMesh *mesh = createPlantMesh(v3f(BS,BS,BS));
+			m_meshnode = smgr->addMeshSceneNode(mesh, NULL);
+			mesh->drop();
+
+			m_meshnode->setScale(v3f(1));
+			// Will be shown when we know the brightness
+			m_meshnode->setVisible(false);
+		} else if (m_prop->visual == "cube_disorted") {
+			infostream<<"LuaEntityCAO::addToScene(): irregular_cube"<<std::endl;
+			scene::IMesh *mesh = createCubeMesh(v3f(BS,BS,BS), m_prop->collisionbox);
+			m_meshnode = smgr->addMeshSceneNode(mesh, NULL);
+			mesh->drop();
+
+			m_meshnode->setScale(v3f(1));
+			// Will be shown when we know the brightness
+			m_meshnode->setVisible(false);
+		} else {
+			infostream<<"LuaEntityCAO::addToScene(): \""<<m_prop->visual
+					<<"\" not supported"<<std::endl;
+		}
+		updateTextures("");
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_meshnode){
+			m_meshnode->remove();
+			m_meshnode = NULL;
+		}
+		if(m_spritenode){
+			m_spritenode->remove();
+			m_spritenode = NULL;
+		}
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		u8 li = decode_light(light_at_pos);
+		video::SColor color(255,li,li,li);
+		if(m_meshnode){
+			setMeshColor(m_meshnode->getMesh(), color);
+			m_meshnode->setVisible(true);
+		}
+		if(m_spritenode){
+			m_spritenode->setColor(color);
+			m_spritenode->setVisible(true);
+		}
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position, BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_meshnode){
+			m_meshnode->setPosition(pos_translator.vect_show);
+		}
+		if(m_spritenode){
+			m_spritenode->setPosition(pos_translator.vect_show);
+		}
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		//if liked movement is handled by parent entity
+		if(!this->isLinked()) {
+			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
+				v3f p_pos = m_position;
+				v3f p_velocity = m_velocity;
+				IGameDef *gamedef = env->getGameDef();
+				moveresult = collisionMovePrecise(&env->getMap(), gamedef,
+						pos_max_d, box, dtime, p_pos, p_velocity);
+				// Apply results
+				m_position = p_pos;
+				m_velocity = p_velocity;
+
+				bool is_end_position = moveresult.collides;
+				pos_translator.update(m_position, is_end_position, dtime);
+				pos_translator.translate(dtime);
+				updateNodePos();
+
+				m_velocity += dtime * m_acceleration;
+			} 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();
+			}
+		}
+
+		stepLinkedObjects(this->m_position,dtime);
+
+		m_anim_timer += dtime;
+		if(m_anim_timer >= m_anim_framelength){
+			m_anim_timer -= m_anim_framelength;
+			m_anim_frame++;
+			if(m_anim_frame >= m_anim_num_frames)
+				m_anim_frame = 0;
+		}
+
+		updateTexturePos();
+	}
+
+	void updateTexturePos()
+	{
+		if(m_spritenode){
+			scene::ICameraSceneNode* camera =
+					m_spritenode->getSceneManager()->getActiveCamera();
+			if(!camera)
+				return;
+			v3f cam_to_entity = m_spritenode->getAbsolutePosition()
+					- camera->getAbsolutePosition();
+			cam_to_entity.normalize();
+
+			int row = m_tx_basepos.Y;
+			int col = m_tx_basepos.X;
+
+			if(m_tx_select_horiz_by_yawpitch)
+			{
+				if(cam_to_entity.Y > 0.75)
+					col += 5;
+				else if(cam_to_entity.Y < -0.75)
+					col += 4;
+				else{
+					float mob_dir = atan2(cam_to_entity.Z, cam_to_entity.X) / PI * 180.;
+					float dir = mob_dir - m_yaw;
+					dir = wrapDegrees_180(dir);
+					//infostream<<"id="<<m_id<<" dir="<<dir<<std::endl;
+					if(fabs(wrapDegrees_180(dir - 0)) <= 45.1)
+						col += 2;
+					else if(fabs(wrapDegrees_180(dir - 90)) <= 45.1)
+						col += 3;
+					else if(fabs(wrapDegrees_180(dir - 180)) <= 45.1)
+						col += 0;
+					else if(fabs(wrapDegrees_180(dir + 90)) <= 45.1)
+						col += 1;
+					else
+						col += 4;
+				}
+			}
+
+			// Animation goes downwards
+			row += m_anim_frame;
+
+			float txs = m_tx_size.X;
+			float tys = m_tx_size.Y;
+			setBillboardTextureMatrix(m_spritenode,
+					txs, tys, col, row);
+		}
+	}
+
+	void updateTextures(const std::string &mod)
+	{
+		ITextureSource *tsrc = m_gamedef->tsrc();
+
+		if(m_spritenode){
+			std::string texturestring = "unknown_block.png";
+			if(m_prop->textures.size() >= 1)
+				texturestring = m_prop->textures[0];
+			texturestring += mod;
+			m_spritenode->setMaterialTexture(0,
+					tsrc->getTextureRaw(texturestring));
+		}
+		if(m_meshnode){
+			for (u32 i = 0; i < 6; ++i)
+			{
+				std::string texturestring = "unknown_block.png";
+				if(m_prop->textures.size() > i)
+					texturestring = m_prop->textures[i];
+				texturestring += mod;
+				AtlasPointer ap = tsrc->getTexture(texturestring);
+
+				// Get the tile texture and atlas transformation
+				video::ITexture* atlas = ap.atlas;
+				v2f pos = ap.pos;
+				v2f size = ap.size;
+
+				// Set material flags and texture
+				video::SMaterial& material = m_meshnode->getMaterial(i);
+				material.setFlag(video::EMF_LIGHTING, false);
+				material.setFlag(video::EMF_BILINEAR_FILTER, false);
+				material.setTexture(0, atlas);
+				material.getTextureMatrix(0).setTextureTranslate(pos.X, pos.Y);
+				material.getTextureMatrix(0).setTextureScale(size.X, size.Y);
+			}
+		}
+	}
+
+	void processMessage(const std::string &data)
+	{
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+		if(cmd == AO_Message_type::SetPosition) // update position
+		{
+			// do_interpolate
+			bool do_interpolate = readU8(is);
+			// pos
+			m_position = readV3F1000(is);
+			// velocity
+			m_velocity = readV3F1000(is);
+			// acceleration
+			m_acceleration = readV3F1000(is);
+			// yaw
+			m_yaw = readF1000(is);
+			// is_end_position (for interpolation)
+			bool is_end_position = readU8(is);
+			// update_interval
+			float update_interval = readF1000(is);
+
+			if(do_interpolate){
+				if(!m_prop->physical)
+					pos_translator.update(m_position, is_end_position, update_interval);
+			} else {
+				pos_translator.init(m_position);
+			}
+			updateNodePos();
+		}
+		else if(cmd == AO_Message_type::SetTextureMod) // set texture modification
+		{
+			std::string mod = deSerializeString(is);
+			updateTextures(mod);
+		}
+		else if(cmd == AO_Message_type::SetSprite) // set sprite
+		{
+			v2s16 p = readV2S16(is);
+			int num_frames = readU16(is);
+			float framelength = readF1000(is);
+			bool select_horiz_by_yawpitch = readU8(is);
+
+			m_tx_basepos = p;
+			m_anim_num_frames = num_frames;
+			m_anim_framelength = framelength;
+			m_tx_select_horiz_by_yawpitch = select_horiz_by_yawpitch;
+
+			updateTexturePos();
+		}
+		else if (handleLinkUnlinkMessages(cmd,&is,this->m_env))
+		{
+			//Link unlink already done in handleLinkUnlinkMessages!
+		}
+	}
+
+	void setPosition(v3f toset, float dtime){
+		if (this->isLinked()) {
+			this->m_position = toset + this->m_linkOffset;
+
+			pos_translator.update(m_position, pos_translator.aim_is_end, pos_translator.anim_time);
+			pos_translator.translate(dtime);
+			updateNodePos();
+		}
+	}
+
+	void updateLinkState(bool value) {}
+};
+
+// Prototype
+LuaEntityCAO proto_LuaEntityCAO(NULL, NULL);

src/content_cao_mobv2.cpp

@@ -0,0 +1,464 @@
+/*
+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 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 "content_cao.h"
+
+/*
+	MobV2CAO
+*/
+
+class MobV2CAO : public ClientActiveObject
+{
+public:
+
+	MobV2CAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-0.4*BS,-0.4*BS,-0.4*BS, 0.4*BS,0.8*BS,0.4*BS),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0)),
+		m_yaw(0),
+		m_walking(false),
+		m_walking_unset_timer(0),
+		m_walk_timer(0),
+		m_walk_frame(0),
+		m_damage_visual_timer(0),
+		m_last_light(0),
+		m_shooting(0),
+		m_shooting_unset_timer(0),
+		m_sprite_size(BS,BS),
+		m_sprite_y(0),
+		m_bright_shooting(false),
+		m_lock_full_brightness(false),
+		m_player_hit_timer(0)
+	{
+		ClientActiveObject::registerType(getType(), create);
+
+		m_properties = new Settings;
+	}
+
+	~MobV2CAO()
+	{
+		delete m_properties;
+	}
+
+	inline u8 getType() const	{	return ACTIVEOBJECT_TYPE_MOBV2;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new MobV2CAO(gamedef, env);
+	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		/*infostream<<"MobV2CAO::addToScene using texture_name="<<
+				m_texture_name<<std::endl;*/
+		std::string texture_string = m_texture_name +
+				"^[makealpha:128,0,0^[makealpha:128,128,0";
+
+		scene::IBillboardSceneNode *bill = smgr->addBillboardSceneNode(
+				NULL, v2f(1, 1), v3f(0,0,0), -1);
+		bill->setMaterialTexture(0, tsrc->getTextureRaw(texture_string));
+		bill->setMaterialFlag(video::EMF_LIGHTING, false);
+		bill->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+		bill->setMaterialType(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF);
+		bill->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+		bill->setColor(video::SColor(255,0,0,0));
+		bill->setVisible(false); /* Set visible when brightness is known */
+		bill->setSize(m_sprite_size);
+		if(m_sprite_type == "humanoid_1"){
+			const float txp = 1./192;
+			const float txs = txp*32;
+			const float typ = 1./240;
+			const float tys = typ*48;
+			setBillboardTextureMatrix(bill, txs, tys, 0, 0);
+		} else if(m_sprite_type == "simple"){
+			const float txs = 1.0;
+			const float tys = 1.0 / m_simple_anim_frames;
+			setBillboardTextureMatrix(bill, txs, tys, 0, 0);
+		} else {
+			infostream<<"MobV2CAO: Unknown sprite type \""<<m_sprite_type<<"\""
+					<<std::endl;
+		}
+
+		m_node = bill;
+
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		if(m_lock_full_brightness)
+			light_at_pos = 15;
+
+		m_last_light = light_at_pos;
+
+		if(m_node == NULL)
+			return;
+
+		if(m_damage_visual_timer > 0)
+			return;
+
+		if(m_shooting && m_bright_shooting)
+			return;
+
+		/*if(light_at_pos <= 2){
+			m_node->setVisible(false);
+			return;
+		}*/
+
+		m_node->setVisible(true);
+
+		u8 li = decode_light(light_at_pos);
+		video::SColor color(255,li,li,li);
+		m_node->setColor(color);
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position+v3f(0,0,0), BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->setPosition(pos_translator.vect_show + v3f(0,m_sprite_y,0));
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		scene::IBillboardSceneNode *bill = m_node;
+		if(!bill)
+			return;
+
+		pos_translator.translate(dtime);
+
+		if(m_sprite_type == "humanoid_1"){
+			scene::ICameraSceneNode* camera = m_node->getSceneManager()->getActiveCamera();
+			if(!camera)
+				return;
+			v3f cam_to_mob = m_node->getAbsolutePosition() - camera->getAbsolutePosition();
+			cam_to_mob.normalize();
+			int col = 0;
+			if(cam_to_mob.Y > 0.75)
+				col = 5;
+			else if(cam_to_mob.Y < -0.75)
+				col = 4;
+			else{
+				float mob_dir = atan2(cam_to_mob.Z, cam_to_mob.X) / PI * 180.;
+				float dir = mob_dir - m_yaw;
+				dir = wrapDegrees_180(dir);
+				//infostream<<"id="<<m_id<<" dir="<<dir<<std::endl;
+				if(fabs(wrapDegrees_180(dir - 0)) <= 45.1)
+					col = 2;
+				else if(fabs(wrapDegrees_180(dir - 90)) <= 45.1)
+					col = 3;
+				else if(fabs(wrapDegrees_180(dir - 180)) <= 45.1)
+					col = 0;
+				else if(fabs(wrapDegrees_180(dir + 90)) <= 45.1)
+					col = 1;
+				else
+					col = 4;
+			}
+
+			int row = 0;
+			if(m_shooting){
+				row = 3;
+			} else if(m_walking){
+				m_walk_timer += dtime;
+				if(m_walk_timer >= 0.5){
+					m_walk_frame = (m_walk_frame + 1) % 2;
+					m_walk_timer = 0;
+				}
+				if(m_walk_frame == 0)
+					row = 1;
+				else
+					row = 2;
+			}
+
+			const float txp = 1./192;
+			const float txs = txp*32;
+			const float typ = 1./240;
+			const float tys = typ*48;
+			setBillboardTextureMatrix(bill, txs, tys, col, row);
+		} else if(m_sprite_type == "simple"){
+			m_walk_timer += dtime;
+			if(m_walk_timer >= m_simple_anim_frametime){
+				m_walk_frame = (m_walk_frame + 1) % m_simple_anim_frames;
+				m_walk_timer = 0;
+			}
+			int col = 0;
+			int row = m_walk_frame;
+			const float txs = 1.0;
+			const float tys = 1.0 / m_simple_anim_frames;
+			setBillboardTextureMatrix(bill, txs, tys, col, row);
+		} else {
+			infostream<<"MobV2CAO::step(): Unknown sprite type \""
+					<<m_sprite_type<<"\""<<std::endl;
+		}
+
+		updateNodePos();
+
+		/* Damage local player */
+		if(m_player_hit_damage && m_player_hit_timer <= 0.0){
+			LocalPlayer *player = env->getLocalPlayer();
+			assert(player);
+
+			v3f playerpos = player->getPosition();
+			v2f playerpos_2d(playerpos.X,playerpos.Z);
+			v2f objectpos_2d(m_position.X,m_position.Z);
+
+			if(fabs(m_position.Y - playerpos.Y) < m_player_hit_distance*BS &&
+			objectpos_2d.getDistanceFrom(playerpos_2d) < m_player_hit_distance*BS)
+			{
+				env->damageLocalPlayer(m_player_hit_damage);
+				m_player_hit_timer = m_player_hit_interval;
+			}
+		}
+
+		/* Run timers */
+
+		m_player_hit_timer -= dtime;
+
+		if(m_damage_visual_timer >= 0){
+			m_damage_visual_timer -= dtime;
+			if(m_damage_visual_timer <= 0){
+				infostream<<"id="<<m_id<<" damage visual ended"<<std::endl;
+			}
+		}
+
+		m_walking_unset_timer += dtime;
+		if(m_walking_unset_timer >= 1.0){
+			m_walking = false;
+		}
+
+		m_shooting_unset_timer -= dtime;
+		if(m_shooting_unset_timer <= 0.0){
+			if(m_bright_shooting){
+				u8 li = decode_light(m_last_light);
+				video::SColor color(255,li,li,li);
+				bill->setColor(color);
+				m_bright_shooting = false;
+			}
+			m_shooting = false;
+		}
+
+	}
+
+	void processMessage(const std::string &data)
+	{
+		//infostream<<"MobV2CAO: Got message"<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+
+		// Move
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.update(m_position);
+			// yaw
+			m_yaw = readF1000(is);
+
+			m_walking = true;
+			m_walking_unset_timer = 0;
+
+			updateNodePos();
+		}
+		// Damage
+		else if(cmd == AO_Message_type::TakeDamage)
+		{
+			//u16 damage = readU16(is);
+
+			/*u8 li = decode_light(m_last_light);
+			if(li >= 100)
+				li = 30;
+			else
+				li = 255;*/
+
+			/*video::SColor color(255,255,0,0);
+			m_node->setColor(color);
+
+			m_damage_visual_timer = 0.2;*/
+		}
+		// Trigger shooting
+		else if(cmd == AO_Message_type::Shoot)
+		{
+			// length
+			m_shooting_unset_timer = readF1000(is);
+			// bright?
+			m_bright_shooting = readU8(is);
+			if(m_bright_shooting){
+				u8 li = 255;
+				video::SColor color(255,li,li,li);
+				m_node->setColor(color);
+			}
+
+			m_shooting = true;
+		}
+	}
+
+	void initialize(const std::string &data)
+	{
+		//infostream<<"MobV2CAO: Got init data"<<std::endl;
+
+		{
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0){
+				infostream<<__FUNCTION_NAME<<": Invalid version"<<std::endl;
+				return;
+			}
+
+			std::ostringstream tmp_os(std::ios::binary);
+			decompressZlib(is, tmp_os);
+			std::istringstream tmp_is(tmp_os.str(), std::ios::binary);
+			m_properties->parseConfigLines(tmp_is, "MobArgsEnd");
+
+			infostream<<"MobV2CAO::initialize(): got properties:"<<std::endl;
+			m_properties->writeLines(infostream);
+
+			m_properties->setDefault("looks", "dummy_default");
+			m_properties->setDefault("yaw", "0");
+			m_properties->setDefault("pos", "(0,0,0)");
+			m_properties->setDefault("player_hit_damage", "0");
+			m_properties->setDefault("player_hit_distance", "1.5");
+			m_properties->setDefault("player_hit_interval", "1.5");
+
+			setLooks(m_properties->get("looks"));
+			m_yaw = m_properties->getFloat("yaw");
+			m_position = m_properties->getV3F("pos");
+			m_player_hit_damage = m_properties->getS32("player_hit_damage");
+			m_player_hit_distance = m_properties->getFloat("player_hit_distance");
+			m_player_hit_interval = m_properties->getFloat("player_hit_interval");
+
+			pos_translator.init(m_position);
+		}
+
+		updateNodePos();
+	}
+
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+
+	v3f getPosition()
+		{return pos_translator.vect_show;}
+
+	bool directReportPunch(const std::string &toolname, v3f dir)
+	{
+		video::SColor color(255,255,0,0);
+		m_node->setColor(color);
+
+		m_damage_visual_timer = 0.05;
+
+		m_position += dir * BS;
+		pos_translator.sharpen();
+		pos_translator.update(m_position);
+		updateNodePos();
+
+		return false;
+	}
+
+private:
+	void setLooks(const std::string &looks)
+		{
+			v2f selection_size = v2f(0.4, 0.4) * BS;
+			float selection_y = 0 * BS;
+
+			if(looks == "dungeon_master"){
+				m_texture_name = "dungeon_master.png";
+				m_sprite_type = "humanoid_1";
+				m_sprite_size = v2f(2, 3) * BS;
+				m_sprite_y = 0.85 * BS;
+				selection_size = v2f(0.4, 2.6) * BS;
+				selection_y = -0.4 * BS;
+			}
+			else if(looks == "fireball"){
+				m_texture_name = "fireball.png";
+				m_sprite_type = "simple";
+				m_sprite_size = v2f(1, 1) * BS;
+				m_simple_anim_frames = 3;
+				m_simple_anim_frametime = 0.1;
+				m_lock_full_brightness = true;
+			}
+			else{
+				m_texture_name = "stone.png";
+				m_sprite_type = "simple";
+				m_sprite_size = v2f(1, 1) * BS;
+				m_simple_anim_frames = 3;
+				m_simple_anim_frametime = 0.333;
+				selection_size = v2f(0.4, 0.4) * BS;
+				selection_y = 0 * BS;
+			}
+
+			m_selection_box = core::aabbox3d<f32>(
+					-selection_size.X, selection_y, -selection_size.X,
+					selection_size.X, selection_y+selection_size.Y,
+					selection_size.X);
+		}
+
+	IntervalLimiter m_attack_interval;
+	core::aabbox3d<f32> m_selection_box;
+	scene::IBillboardSceneNode *m_node;
+	v3f m_position;
+	std::string m_texture_name;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+	bool m_walking;
+	float m_walking_unset_timer;
+	float m_walk_timer;
+	int m_walk_frame;
+	float m_damage_visual_timer;
+	u8 m_last_light;
+	bool m_shooting;
+	float m_shooting_unset_timer;
+	v2f m_sprite_size;
+	float m_sprite_y;
+	bool m_bright_shooting;
+	std::string m_sprite_type;
+	int m_simple_anim_frames;
+	float m_simple_anim_frametime;
+	bool m_lock_full_brightness;
+	int m_player_hit_damage;
+	float m_player_hit_distance;
+	float m_player_hit_interval;
+	float m_player_hit_timer;
+
+	Settings *m_properties;
+};
+
+// Prototype
+MobV2CAO proto_MobV2CAO(NULL, NULL);

src/content_cao_oerkki1.cpp

@@ -0,0 +1,283 @@
+/*
+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 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 "inventory.h"
+#include "content_cao.h"
+
+/*
+	Oerkki1CAO
+*/
+
+class Oerkki1CAO : public ClientActiveObject
+{
+public:
+	Oerkki1CAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2.,BS/3.),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0)),
+		m_yaw(0),
+		m_damage_visual_timer(0),
+		m_damage_texture_enabled(false)
+	{
+		ClientActiveObject::registerType(getType(), create);
+	}
+
+	~Oerkki1CAO()
+	{
+	}
+
+	inline u8 getType() const {	return ACTIVEOBJECT_TYPE_OERKKI1;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new Oerkki1CAO(gamedef, env);
+	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+
+		scene::SMesh *mesh = new scene::SMesh();
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		video::SColor c(255,255,255,255);
+		video::S3DVertex vertices[4] =
+		{
+			video::S3DVertex(-BS/2-BS,0,0, 0,0,0, c, 0,1),
+			video::S3DVertex(BS/2+BS,0,0, 0,0,0, c, 1,1),
+			video::S3DVertex(BS/2+BS,BS*2,0, 0,0,0, c, 1,0),
+			video::S3DVertex(-BS/2-BS,BS*2,0, 0,0,0, c, 0,0),
+		};
+		u16 indices[] = {0,1,2,2,3,0};
+		buf->append(vertices, 4, indices, 6);
+		// Set material
+		buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+		buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+		//buf->getMaterial().setTexture(0, NULL);
+		buf->getMaterial().setTexture(0, tsrc->getTextureRaw("oerkki1.png"));
+		buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+		buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+		buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+		// Add to mesh
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+		m_node = smgr->addMeshSceneNode(mesh, NULL);
+		mesh->drop();
+		// Set it to use the materials of the meshbuffers directly.
+		// This is needed for changing the texture in the future
+		m_node->setReadOnlyMaterials(true);
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		if(m_node == NULL)
+			return;
+
+		if(light_at_pos <= 2)
+		{
+			m_node->setVisible(false);
+			return;
+		}
+
+		m_node->setVisible(true);
+
+		u8 li = decode_light(light_at_pos);
+		video::SColor color(255,li,li,li);
+		setMeshColor(m_node->getMesh(), color);
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position+v3f(0,BS*1.5,0), BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		//m_node->setPosition(m_position);
+		m_node->setPosition(pos_translator.vect_show);
+
+		v3f rot = m_node->getRotation();
+		rot.Y = 180.0 - m_yaw + 90.0;
+		m_node->setRotation(rot);
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		ITextureSource *tsrc = m_gamedef->tsrc();
+
+		pos_translator.translate(dtime);
+		updateNodePos();
+
+		LocalPlayer *player = env->getLocalPlayer();
+		assert(player);
+
+		v3f playerpos = player->getPosition();
+		v2f playerpos_2d(playerpos.X,playerpos.Z);
+		v2f objectpos_2d(m_position.X,m_position.Z);
+
+		if(fabs(m_position.Y - playerpos.Y) < 1.5*BS &&
+				objectpos_2d.getDistanceFrom(playerpos_2d) < 1.5*BS)
+		{
+			if(m_attack_interval.step(dtime, 0.5))
+			{
+				env->damageLocalPlayer(2);
+			}
+		}
+
+		if(m_damage_visual_timer > 0)
+		{
+			if(!m_damage_texture_enabled)
+			{
+				// Enable damage texture
+				if(m_node)
+				{
+					/*video::IVideoDriver* driver =
+						m_node->getSceneManager()->getVideoDriver();*/
+
+					scene::IMesh *mesh = m_node->getMesh();
+					if(mesh == NULL)
+						return;
+
+					u16 mc = mesh->getMeshBufferCount();
+					for(u16 j=0; j<mc; j++)
+					{
+						scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+						buf->getMaterial().setTexture(0,
+								tsrc->getTextureRaw("oerkki1_damaged.png"));
+					}
+				}
+				m_damage_texture_enabled = true;
+			}
+			m_damage_visual_timer -= dtime;
+		}
+		else
+		{
+			if(m_damage_texture_enabled)
+			{
+				// Disable damage texture
+				if(m_node)
+				{
+					/*video::IVideoDriver* driver =
+						m_node->getSceneManager()->getVideoDriver();*/
+
+					scene::IMesh *mesh = m_node->getMesh();
+					if(mesh == NULL)
+						return;
+
+					u16 mc = mesh->getMeshBufferCount();
+					for(u16 j=0; j<mc; j++)
+					{
+						scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+						buf->getMaterial().setTexture(0,
+								tsrc->getTextureRaw("oerkki1.png"));
+					}
+				}
+				m_damage_texture_enabled = false;
+			}
+		}
+	}
+
+	void processMessage(const std::string &data)
+	{
+		//infostream<<"Oerkki1CAO: Got message"<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.update(m_position);
+			// yaw
+			m_yaw = readF1000(is);
+			updateNodePos();
+		}
+		else if(cmd == AO_Message_type::TakeDamage)
+		{
+			//u16 damage = readU8(is);
+			m_damage_visual_timer = 1.0;
+		}
+	}
+
+	void initialize(const std::string &data)
+	{
+		//infostream<<"Oerkki1CAO: Got init data"<<std::endl;
+
+		{
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0)
+				return;
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.init(m_position);
+		}
+
+		updateNodePos();
+	}
+
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+
+	v3f getPosition()
+		{return pos_translator.vect_show;}
+
+	bool directReportPunch(const std::string &toolname, v3f dir)
+	{
+		m_damage_visual_timer = 1.0;
+
+		m_position += dir * BS;
+		pos_translator.sharpen();
+		pos_translator.update(m_position);
+		updateNodePos();
+
+		return false;
+	}
+
+private:
+	IntervalLimiter m_attack_interval;
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+	float m_damage_visual_timer;
+	bool m_damage_texture_enabled;
+};
+
+// Prototype
+Oerkki1CAO proto_Oerkki1CAO(NULL, NULL);

src/content_cao_player.cpp

@@ -0,0 +1,315 @@
+/*
+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 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 "content_cao.h"
+#include "clientlinkableobject.h"
+
+/*
+	PlayerCAO
+*/
+
+class PlayerCAO : public ClientActiveObject, public ClientLinkableObject
+{
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	scene::ITextSceneNode* m_text;
+	std::string m_name;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+	bool m_is_local_player;
+	LocalPlayer *m_local_player;
+	float m_damage_visual_timer;
+
+public:
+	PlayerCAO(IGameDef *gamedef, ClientEnvironment *env):
+			ClientActiveObject(0, gamedef, env),
+			m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2.0,BS/3.),
+			m_node(NULL),
+			m_text(NULL),
+			m_position(v3f(0,10*BS,0)),
+			m_yaw(0),
+			m_is_local_player(false),
+			m_local_player(NULL),
+			m_damage_visual_timer(0)
+		{
+			if(gamedef == NULL)
+				ClientActiveObject::registerType(getType(), create);
+		}
+
+	void initialize(const std::string &data)
+		{
+			infostream<<"PlayerCAO: Got init data"<<std::endl;
+
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0)
+				return;
+			// name
+			m_name = deSerializeString(is);
+			// pos
+			m_position = readV3F1000(is);
+			// yaw
+			m_yaw = readF1000(is);
+
+			pos_translator.init(m_position);
+
+			Player *player = m_env->getPlayer(m_name.c_str());
+			if(player && player->isLocal()){
+				m_is_local_player = true;
+				m_local_player = (LocalPlayer*)player;
+			}
+		}
+
+	~PlayerCAO()
+		{
+			if(m_node)
+				m_node->remove();
+		}
+
+	inline u8 getType() const	{	return ACTIVEOBJECT_TYPE_PLAYER;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+		{
+			return new PlayerCAO(gamedef, env);
+		}
+
+
+	core::aabbox3d<f32>* getSelectionBox()
+		{
+			if(m_is_local_player)
+				return NULL;
+			return &m_selection_box;
+		}
+
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+		{
+			if(m_node != NULL)
+				return;
+			if(m_is_local_player)
+				return;
+
+			//video::IVideoDriver* driver = smgr->getVideoDriver();
+			gui::IGUIEnvironment* gui = irr->getGUIEnvironment();
+
+			scene::SMesh *mesh = new scene::SMesh();
+			{ // Front
+			scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+			video::SColor c(255,255,255,255);
+			video::S3DVertex vertices[4] =
+			{
+				video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
+				video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
+				video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
+				video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
+			};
+			u16 indices[] = {0,1,2,2,3,0};
+			buf->append(vertices, 4, indices, 6);
+			// Set material
+			buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+			buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+			buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+			buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+			// Add to mesh
+			mesh->addMeshBuffer(buf);
+			buf->drop();
+			}
+			{ // Back
+			scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+			video::SColor c(255,255,255,255);
+			video::S3DVertex vertices[4] =
+			{
+				video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
+				video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
+				video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
+				video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
+			};
+			u16 indices[] = {0,1,2,2,3,0};
+			buf->append(vertices, 4, indices, 6);
+			// Set material
+			buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+			buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+			buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+			buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+			// Add to mesh
+			mesh->addMeshBuffer(buf);
+			buf->drop();
+			}
+			m_node = smgr->addMeshSceneNode(mesh, NULL);
+			mesh->drop();
+			// Set it to use the materials of the meshbuffers directly.
+			// This is needed for changing the texture in the future
+			m_node->setReadOnlyMaterials(true);
+			updateNodePos();
+
+			// Add a text node for showing the name
+			std::wstring wname = narrow_to_wide(m_name);
+			m_text = smgr->addTextSceneNode(gui->getBuiltInFont(),
+					wname.c_str(), video::SColor(255,255,255,255), m_node);
+			m_text->setPosition(v3f(0, (f32)BS*2.1, 0));
+
+			updateTextures("");
+			updateNodePos();
+		}
+
+	void removeFromScene()
+		{
+			if(m_node == NULL)
+				return;
+
+			m_node->remove();
+			m_node = NULL;
+		}
+
+	void updateLight(u8 light_at_pos)
+		{
+			if(m_node == NULL)
+				return;
+
+			m_node->setVisible(true);
+
+			u8 li = decode_light(light_at_pos);
+			video::SColor color(255,li,li,li);
+			setMeshColor(m_node->getMesh(), color);
+		}
+
+	v3s16 getLightPosition()
+		{
+			return floatToInt(m_position+v3f(0,BS*1.5,0), BS);
+		}
+
+	void updateNodePos()
+		{
+			if(m_node == NULL)
+				return;
+
+			m_node->setPosition(pos_translator.vect_show);
+
+			v3f rot = m_node->getRotation();
+			rot.Y = -m_yaw;
+			m_node->setRotation(rot);
+		}
+
+	void step(float dtime, ClientEnvironment *env)
+		{
+			if(!isLinked()) {
+				pos_translator.translate(dtime);
+				updateNodePos();
+			}
+
+			if(m_damage_visual_timer > 0){
+				m_damage_visual_timer -= dtime;
+				if(m_damage_visual_timer <= 0){
+					updateTextures("");
+				}
+			}
+
+		}
+
+	void processMessage(const std::string &data)
+		{
+			//infostream<<"PlayerCAO: Got message"<<std::endl;
+			std::istringstream is(data, std::ios::binary);
+			// command
+			u8 cmd = readU8(is);
+			if(cmd == AO_Message_type::SetPosition) // update position
+			{
+				// pos
+				m_position = readV3F1000(is);
+				// yaw
+				m_yaw = readF1000(is);
+
+				pos_translator.update(m_position, false);
+
+				updateNodePos();
+			}
+			else if(cmd == AO_Message_type::Punched) // punched
+			{
+				// damage
+				s16 damage = readS16(is);
+
+				if(m_is_local_player)
+					m_env->damageLocalPlayer(damage, false);
+
+				m_damage_visual_timer = 0.5;
+				updateTextures("^[brighten");
+			}
+			else if (handleLinkUnlinkMessages(cmd,&is,this->m_env))
+			{
+				//Link unlink already done in handleLinkUnlinkMessages!
+			}
+
+		}
+
+	void updateTextures(const std::string &mod)
+		{
+			if(!m_node)
+				return;
+			ITextureSource *tsrc = m_gamedef->tsrc();
+			scene::IMesh *mesh = m_node->getMesh();
+			if(mesh){
+				{
+					std::string tname = "player.png";
+					tname += mod;
+					scene::IMeshBuffer *buf = mesh->getMeshBuffer(0);
+					buf->getMaterial().setTexture(0,
+							tsrc->getTextureRaw(tname));
+				}
+				{
+					std::string tname = "player_back.png";
+					tname += mod;
+					scene::IMeshBuffer *buf = mesh->getMeshBuffer(1);
+					buf->getMaterial().setTexture(0,
+							tsrc->getTextureRaw(tname));
+				}
+			}
+		}
+	void setPosition(v3f toset, float dtime){
+		if (isLinked()) {
+			this->m_position = toset + this->m_linkOffset;
+			pos_translator.update(this->m_position,false);
+			updateNodePos();
+
+			if(m_is_local_player) {
+				m_local_player->setPosition(this->m_position);
+			}
+		}
+		else {
+			errorstream<<"Got linked position update but not linked"<< std::endl;
+		}
+	}
+
+	void updateLinkState(bool value) {
+		if(m_is_local_player) {
+			m_local_player->Link(value);
+		}
+	}
+
+
+	inline v3f getPosition() 	{	return m_position;	}
+
+};
+
+// Prototype
+PlayerCAO proto_PlayerCAO(NULL, NULL);

src/content_cao_rat.cpp

@@ -0,0 +1,183 @@
+/*
+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 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 "inventory.h"
+#include "content_cao.h"
+
+/*
+	RatCAO
+*/
+
+class RatCAO : public ClientActiveObject
+{
+public:
+	RatCAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS/2.,BS/3.),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0)),
+		m_yaw(0)
+	{
+		ClientActiveObject::registerType(getType(), create);
+	}
+
+	~RatCAO()
+	{
+	}
+
+	inline u8 getType() const	{	return ACTIVEOBJECT_TYPE_RAT;	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new RatCAO(gamedef, env);
+	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+
+		scene::SMesh *mesh = new scene::SMesh();
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		video::SColor c(255,255,255,255);
+		video::S3DVertex vertices[4] =
+		{
+			video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
+			video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
+			video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
+			video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
+		};
+		u16 indices[] = {0,1,2,2,3,0};
+		buf->append(vertices, 4, indices, 6);
+		// Set material
+		buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+		buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+		//buf->getMaterial().setTexture(0, NULL);
+		buf->getMaterial().setTexture(0, tsrc->getTextureRaw("rat.png"));
+		buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+		buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+		buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+		// Add to mesh
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+		m_node = smgr->addMeshSceneNode(mesh, NULL);
+		mesh->drop();
+		// Set it to use the materials of the meshbuffers directly.
+		// This is needed for changing the texture in the future
+		m_node->setReadOnlyMaterials(true);
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+		if(m_node == NULL)
+			return;
+
+		u8 li = decode_light(light_at_pos);
+		video::SColor color(255,li,li,li);
+		setMeshColor(m_node->getMesh(), color);
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position+v3f(0,BS*0.5,0), BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		//m_node->setPosition(m_position);
+		m_node->setPosition(pos_translator.vect_show);
+
+		v3f rot = m_node->getRotation();
+		rot.Y = 180.0 - m_yaw;
+		m_node->setRotation(rot);
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		pos_translator.translate(dtime);
+		updateNodePos();
+	}
+
+	void processMessage(const std::string &data)
+	{
+		//infostream<<"RatCAO: Got message"<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		// command
+		u8 cmd = readU8(is);
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.update(m_position);
+			// yaw
+			m_yaw = readF1000(is);
+			updateNodePos();
+		}
+	}
+
+	void initialize(const std::string &data)
+	{
+		//infostream<<"RatCAO: Got init data"<<std::endl;
+
+		{
+			std::istringstream is(data, std::ios::binary);
+			// version
+			u8 version = readU8(is);
+			// check version
+			if(version != 0)
+				return;
+			// pos
+			m_position = readV3F1000(is);
+			pos_translator.init(m_position);
+		}
+
+		updateNodePos();
+	}
+
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+
+	v3f getPosition()
+		{return pos_translator.vect_show;}
+
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+};
+
+// Prototype
+RatCAO proto_RatCAO(NULL, NULL);

src/content_cao_test.cpp

@@ -0,0 +1,144 @@
+/*
+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 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 "content_cao.h"
+
+/*
+	TestCAO
+*/
+
+class TestCAO : public ClientActiveObject
+{
+public:
+
+	TestCAO(IGameDef *gamedef, ClientEnvironment *env):
+		ClientActiveObject(0, gamedef, env),
+		m_node(NULL),
+		m_position(v3f(0,10*BS,0))
+	{
+		ClientActiveObject::registerType(getType(), create);
+	}
+
+	~TestCAO()
+	{
+	}
+
+	static ClientActiveObject* create(IGameDef *gamedef, ClientEnvironment *env)
+	{
+		return new TestCAO(gamedef, env);
+	}
+
+	inline u8 getType() const
+	{	return ACTIVEOBJECT_TYPE_TEST;	}
+
+	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc,
+				IrrlichtDevice *irr)
+	{
+		if(m_node != NULL)
+			return;
+
+		//video::IVideoDriver* driver = smgr->getVideoDriver();
+
+		scene::SMesh *mesh = new scene::SMesh();
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		video::SColor c(255,255,255,255);
+		video::S3DVertex vertices[4] =
+		{
+			video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
+			video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
+			video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
+			video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),
+		};
+		u16 indices[] = {0,1,2,2,3,0};
+		buf->append(vertices, 4, indices, 6);
+		// Set material
+		buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+		buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+		buf->getMaterial().setTexture(0, tsrc->getTextureRaw("rat.png"));
+		buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+		buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+		buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+		// Add to mesh
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+		m_node = smgr->addMeshSceneNode(mesh, NULL);
+		mesh->drop();
+		updateNodePos();
+	}
+
+	void removeFromScene()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->remove();
+		m_node = NULL;
+	}
+
+	void updateLight(u8 light_at_pos)
+	{
+	}
+
+	v3s16 getLightPosition()
+	{
+		return floatToInt(m_position, BS);
+	}
+
+	void updateNodePos()
+	{
+		if(m_node == NULL)
+			return;
+
+		m_node->setPosition(m_position);
+		//m_node->setRotation(v3f(0, 45, 0));
+	}
+
+	void step(float dtime, ClientEnvironment *env)
+	{
+		if(m_node)
+		{
+			v3f rot = m_node->getRotation();
+			//infostream<<"dtime="<<dtime<<", rot.Y="<<rot.Y<<std::endl;
+			rot.Y += dtime * 180;
+			m_node->setRotation(rot);
+		}
+	}
+
+	void processMessage(const std::string &data)
+	{
+		infostream<<"TestCAO: Got data: "<<data<<std::endl;
+		std::istringstream is(data, std::ios::binary);
+		u16 cmd;
+		is>>cmd;
+		if(cmd == AO_Message_type::SetPosition)
+		{
+			v3f newpos;
+			is>>newpos.X;
+			is>>newpos.Y;
+			is>>newpos.Z;
+			m_position = newpos;
+			updateNodePos();
+		}
+	}
+private:
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+};
+
+// Prototype
+TestCAO proto_TestCAO(NULL, NULL);

src/content_object.h

@@ -20,17 +20,27 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef CONTENT_OBJECT_HEADER
 #define CONTENT_OBJECT_HEADER
 
-#define ACTIVEOBJECT_TYPE_TEST 1
-#define ACTIVEOBJECT_TYPE_ITEM 2
-#define ACTIVEOBJECT_TYPE_RAT 3
-#define ACTIVEOBJECT_TYPE_OERKKI1 4
-#define ACTIVEOBJECT_TYPE_FIREFLY 5
-#define ACTIVEOBJECT_TYPE_MOBV2 6
-
-#define ACTIVEOBJECT_TYPE_LUAENTITY 7
+#define ACTIVEOBJECT_TYPE_TEST		0x01
+#define ACTIVEOBJECT_TYPE_ITEM		0x02
+#define ACTIVEOBJECT_TYPE_RAT		0x03
+#define ACTIVEOBJECT_TYPE_OERKKI1	0x04
+#define ACTIVEOBJECT_TYPE_FIREFLY	0x05
+#define ACTIVEOBJECT_TYPE_MOBV2		0x06
+#define ACTIVEOBJECT_TYPE_LUAENTITY 0x07
 
 // Special type, not stored as a static object
-#define ACTIVEOBJECT_TYPE_PLAYER 100
+#define ACTIVEOBJECT_TYPE_PLAYER    0x64
+
+struct AO_Message_type {
+	static const u8 SetPosition      = 0x00;
+	static const u8 SetTextureMod    = 0x01;
+	static const u8 SetSprite        = 0x02;
+	static const u8 Punched          = 0x03;
+	static const u8 TakeDamage       = 0x04;
+	static const u8 Shoot            = 0x05;
+	static const u8 Link             = 0x06;
+	static const u8 UnLink           = 0x07;
+};
 
 #endif
 

src/content_sao.h

@@ -22,223 +22,25 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "serverobject.h"
 #include "content_object.h"
-
-class TestSAO : public ServerActiveObject
-{
-public:
-	TestSAO(ServerEnvironment *env, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_TEST;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-private:
-	float m_timer1;
-	float m_age;
-};
-
-class ItemSAO : public ServerActiveObject
-{
-public:
-	ItemSAO(ServerEnvironment *env, v3f pos,
-			const std::string inventorystring);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_ITEM;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	InventoryItem* createInventoryItem();
-	void punch(ServerActiveObject *puncher, float time_from_last_punch);
-	float getMinimumSavedMovement(){ return 0.1*BS; }
-private:
-	std::string m_inventorystring;
-	v3f m_speed_f;
-	v3f m_last_sent_position;
-	IntervalLimiter m_move_interval;
-};
-
-class RatSAO : public ServerActiveObject
-{
-public:
-	RatSAO(ServerEnvironment *env, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_RAT;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	void punch(ServerActiveObject *puncher, float time_from_last_punch);
-private:
-	bool m_is_active;
-	IntervalLimiter m_inactive_interval;
-	v3f m_speed_f;
-	v3f m_oldpos;
-	v3f m_last_sent_position;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-};
-
-class Oerkki1SAO : public ServerActiveObject
-{
-public:
-	Oerkki1SAO(ServerEnvironment *env, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_OERKKI1;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	void punch(ServerActiveObject *puncher, float time_from_last_punch);
-	bool isPeaceful(){return false;}
-private:
-	void doDamage(u16 d);
-
-	bool m_is_active;
-	IntervalLimiter m_inactive_interval;
-	v3f m_speed_f;
-	v3f m_oldpos;
-	v3f m_last_sent_position;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-	u8 m_hp;
-	float m_after_jump_timer;
-};
-
-class FireflySAO : public ServerActiveObject
-{
-public:
-	FireflySAO(ServerEnvironment *env, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_FIREFLY;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-private:
-	bool m_is_active;
-	IntervalLimiter m_inactive_interval;
-	v3f m_speed_f;
-	v3f m_oldpos;
-	v3f m_last_sent_position;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-};
+#include "collision.h"
+#include "environment.h"
+#include "settings.h"
+#include "main.h" // For g_profiler
+#include "profiler.h"
+#include "serialization.h" // For compressZlib
+#include "materials.h" // For MaterialProperties
+#include "tooldef.h" // ToolDiggingProperties
 
 class Settings;
 
-class MobV2SAO : public ServerActiveObject
-{
-public:
-	MobV2SAO(ServerEnvironment *env, v3f pos,
-			Settings *init_properties);
-	virtual ~MobV2SAO();
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_MOBV2;}
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	std::string getStaticData();
-	std::string getClientInitializationData();
-	void step(float dtime, bool send_recommended);
-	void punch(ServerActiveObject *puncher, float time_from_last_punch);
-	bool isPeaceful();
-private:
-	void sendPosition();
-	void setPropertyDefaults();
-	void readProperties();
-	void updateProperties();
-	void doDamage(u16 d);
-	
-	std::string m_move_type;
-	v3f m_speed;
-	v3f m_last_sent_position;
-	v3f m_oldpos;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-	int m_hp;
-	bool m_walk_around;
-	float m_walk_around_timer;
-	bool m_next_pos_exists;
-	v3s16 m_next_pos_i;
-	float m_shoot_reload_timer;
-	bool m_shooting;
-	float m_shooting_timer;
-	float m_die_age;
-	v2f m_size;
-	bool m_falling;
-	float m_disturb_timer;
-	std::string m_disturbing_player;
-	float m_random_disturb_timer;
-	float m_shoot_y;
-	
-	Settings *m_properties;
-};
+#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
-struct LuaEntityProperties;
-
-class LuaEntitySAO : public ServerActiveObject
-{
-public:
-	LuaEntitySAO(ServerEnvironment *env, v3f pos,
-			const std::string &name, const std::string &state);
-	~LuaEntitySAO();
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_LUAENTITY;}
-	virtual void addedToEnvironment();
-	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
-			const std::string &data);
-	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	void punch(ServerActiveObject *puncher, float time_from_last_punch);
-	void rightClick(ServerActiveObject *clicker);
-	void setPos(v3f pos);
-	void moveTo(v3f pos, bool continuous);
-	float getMinimumSavedMovement();
-	/* LuaEntitySAO-specific */
-	void setVelocity(v3f velocity);
-	v3f getVelocity();
-	void setAcceleration(v3f acceleration);
-	v3f getAcceleration();
-	void setYaw(float yaw);
-	float getYaw();
-	void setTextureMod(const std::string &mod);
-	void setSprite(v2s16 p, int num_frames, float framelength,
-			bool select_horiz_by_yawpitch);
-	std::string getName();
-private:
-	void sendPosition(bool do_interpolate, bool is_movement_end);
-
-	std::string m_init_name;
-	std::string m_init_state;
-	bool m_registered;
-	struct LuaEntityProperties *m_prop;
-	
-	v3f m_velocity;
-	v3f m_acceleration;
-	float m_yaw;
-	float m_last_sent_yaw;
-	v3f m_last_sent_position;
-	v3f m_last_sent_velocity;
-	float m_last_sent_position_timer;
-	float m_last_sent_move_precision;
-};
+void accelerate_xz(v3f &speed, v3f target_speed, f32 max_increase);
+bool checkFreePosition(Map *map, v3s16 p0, v3s16 size);
+bool checkWalkablePosition(Map *map, v3s16 p0);
+bool checkFreeAndWalkablePosition(Map *map, v3s16 p0, v3s16 size);
+void get_random_u32_array(u32 a[], u32 len);
+void explodeSquare(Map *map, v3s16 p0, v3s16 size);
 
 #endif
 

src/content_sao_firefly.cpp

@@ -0,0 +1,193 @@
+/*
+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 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 "content_sao_firefly.h"
+
+/*
+	FireflySAO
+*/
+
+FireflySAO::FireflySAO(ServerEnvironment *env, v3f pos):
+	ServerActiveObject(env, pos),
+	m_is_active(false),
+	m_speed_f(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_oldpos = v3f(0,0,0);
+	m_last_sent_position = v3f(0,0,0);
+	m_yaw = 0;
+	m_counter1 = 0;
+	m_counter2 = 0;
+	m_age = 0;
+	m_touching_ground = false;
+}
+
+ServerActiveObject* FireflySAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	char buf[1];
+	// read version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	return new FireflySAO(env, pos);
+}
+
+void FireflySAO::step(float dtime, bool send_recommended)
+{
+	ScopeProfiler sp2(g_profiler, "FireflySAO::step avg", SPT_AVG);
+
+	assert(m_env);
+
+	if(m_is_active == false)
+	{
+		if(m_inactive_interval.step(dtime, 0.5)==false)
+			return;
+	}
+
+	/*
+		The AI
+	*/
+
+	// Apply (less) gravity
+	m_speed_f.Y -= dtime*3*BS;
+
+	/*
+		Move around if some player is close
+	*/
+	bool player_is_close = false;
+	// Check connected players
+	core::list<Player*> players = m_env->getPlayers(true);
+	core::list<Player*>::Iterator i;
+	for(i = players.begin();
+			i != players.end(); i++)
+	{
+		Player *player = *i;
+		v3f playerpos = player->getPosition();
+		if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
+		{
+			player_is_close = true;
+			break;
+		}
+	}
+
+	m_is_active = player_is_close;
+
+	if(player_is_close == false)
+	{
+		m_speed_f.X = 0;
+		m_speed_f.Z = 0;
+	}
+	else
+	{
+		// Move around
+		v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+		f32 speed = BS/2;
+		m_speed_f.X = speed * dir.X;
+		m_speed_f.Z = speed * dir.Z;
+
+		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+				< dtime*speed/2)
+		{
+			m_counter1 -= dtime;
+			if(m_counter1 < 0.0)
+			{
+				m_counter1 += 1.0;
+				m_speed_f.Y = 5.0*BS;
+			}
+		}
+
+		{
+			m_counter2 -= dtime;
+			if(m_counter2 < 0.0)
+			{
+				m_counter2 += (float)(myrand()%100)/100*3.0;
+				m_yaw += ((float)(myrand()%200)-100)/100*180;
+				m_yaw = wrapDegrees(m_yaw);
+			}
+		}
+	}
+
+	m_oldpos = m_base_position;
+
+	/*
+		Move it, with collision detection
+	*/
+
+	core::aabbox3d<f32> box(-BS/3.,-BS*2/3.0,-BS/3., BS/3.,BS*4./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	IGameDef *gamedef = m_env->getGameDef();
+	moveresult = collisionMoveSimple(&m_env->getMap(), gamedef,
+			pos_max_d, box, dtime, pos_f, m_speed_f);
+	m_touching_ground = moveresult.touching_ground;
+
+	setBasePosition(pos_f);
+
+	if(send_recommended == false)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		// command (0 = update position)
+		writeU8(os, AO_Message_type::SetPosition);
+		// pos
+		writeV3F1000(os, m_base_position);
+		// yaw
+		writeF1000(os, m_yaw);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string FireflySAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	return os.str();
+}
+
+std::string FireflySAO::getStaticData()
+{
+	//infostream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	return os.str();
+}
+
+// Prototype
+FireflySAO proto_FireflySAO(NULL, v3f(0,0,0));

src/content_sao_firefly.h

@@ -0,0 +1,49 @@
+/*
+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 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 CONTENT_SOA_FIREFLY_H_
+#define CONTENT_SOA_FIREFLY_H_
+
+#include "content_sao.h"
+
+class FireflySAO : public ServerActiveObject
+{
+public:
+	FireflySAO(ServerEnvironment *env, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_FIREFLY;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+private:
+	bool m_is_active;
+	IntervalLimiter m_inactive_interval;
+	v3f m_speed_f;
+	v3f m_oldpos;
+	v3f m_last_sent_position;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+};
+
+#endif /* CONTENT_SOA_FIREFLY_H_ */

src/content_sao_item.cpp

@@ -0,0 +1,167 @@
+/*
+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 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 "content_sao_item.h"
+
+/*
+	ItemSAO
+*/
+
+ItemSAO::ItemSAO(ServerEnvironment *env, v3f pos,
+		const std::string inventorystring):
+	ServerActiveObject(env, pos),
+	m_inventorystring(inventorystring),
+	m_speed_f(0,0,0),
+	m_last_sent_position(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* ItemSAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	char buf[1];
+	// read version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	std::string inventorystring = deSerializeString(is);
+	infostream<<"ItemSAO::create(): Creating item \""
+			<<inventorystring<<"\""<<std::endl;
+	return new ItemSAO(env, pos, inventorystring);
+}
+
+void ItemSAO::step(float dtime, bool send_recommended)
+{
+	ScopeProfiler sp2(g_profiler, "ItemSAO::step avg", SPT_AVG);
+
+	assert(m_env);
+
+	const float interval = 0.2;
+	if(m_move_interval.step(dtime, interval)==false)
+		return;
+	dtime = interval;
+
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Apply gravity
+	m_speed_f += v3f(0, -dtime*9.81*BS, 0);
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	IGameDef *gamedef = m_env->getGameDef();
+	moveresult = collisionMoveSimple(&m_env->getMap(), gamedef,
+			pos_max_d, box, dtime, pos_f, m_speed_f);
+
+	if(send_recommended == false)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		setBasePosition(pos_f);
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		char buf[6];
+		// command (0 = update position)
+		buf[0] = AO_Message_type::SetPosition;
+		os.write(buf, 1);
+		// pos
+		writeS32((u8*)buf, m_base_position.X*1000);
+		os.write(buf, 4);
+		writeS32((u8*)buf, m_base_position.Y*1000);
+		os.write(buf, 4);
+		writeS32((u8*)buf, m_base_position.Z*1000);
+		os.write(buf, 4);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string ItemSAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	char buf[6];
+	// version
+	buf[0] = 0;
+	os.write(buf, 1);
+	// pos
+	writeS32((u8*)buf, m_base_position.X*1000);
+	os.write(buf, 4);
+	writeS32((u8*)buf, m_base_position.Y*1000);
+	os.write(buf, 4);
+	writeS32((u8*)buf, m_base_position.Z*1000);
+	os.write(buf, 4);
+	// inventorystring
+	os<<serializeString(m_inventorystring);
+	return os.str();
+}
+
+std::string ItemSAO::getStaticData()
+{
+	infostream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	char buf[1];
+	// version
+	buf[0] = 0;
+	os.write(buf, 1);
+	// inventorystring
+	os<<serializeString(m_inventorystring);
+	return os.str();
+}
+
+InventoryItem * ItemSAO::createInventoryItem()
+{
+	try{
+		std::istringstream is(m_inventorystring, std::ios_base::binary);
+		IGameDef *gamedef = m_env->getGameDef();
+		InventoryItem *item = InventoryItem::deSerialize(is, gamedef);
+		infostream<<__FUNCTION_NAME<<": m_inventorystring=\""
+				<<m_inventorystring<<"\" -> item="<<item
+				<<std::endl;
+		return item;
+	}
+	catch(SerializationError &e)
+	{
+		infostream<<__FUNCTION_NAME<<": serialization error: "
+				<<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
+		return NULL;
+	}
+}
+
+void ItemSAO::punch(ServerActiveObject *puncher, float time_from_last_punch)
+{
+	InventoryItem *item = createInventoryItem();
+	bool fits = puncher->addToInventory(item);
+	if(fits)
+		m_removed = true;
+	else
+		delete item;
+}
+
+// Prototype
+ItemSAO proto_ItemSAO(NULL, v3f(0,0,0), "");

src/content_sao_item.h

@@ -0,0 +1,47 @@
+/*
+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 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 CONTENT_SAO_ITEM_H_
+#define CONTENT_SAO_ITEM_H_
+
+#include "content_sao.h"
+
+class ItemSAO : public ServerActiveObject
+{
+public:
+	ItemSAO(ServerEnvironment *env, v3f pos,
+			const std::string inventorystring);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_ITEM;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	InventoryItem* createInventoryItem();
+	void punch(ServerActiveObject *puncher, float time_from_last_punch);
+	float getMinimumSavedMovement(){ return 0.1*BS; }
+private:
+	std::string m_inventorystring;
+	v3f m_speed_f;
+	v3f m_last_sent_position;
+	IntervalLimiter m_move_interval;
+};
+
+#endif /* CONTENT_SAO_ITEM_H_ */

src/content_sao_lua.cpp

@@ -0,0 +1,344 @@
+/*
+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 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 <iostream>
+#include "content_sao_lua.h"
+
+/*
+	LuaEntitySAO
+*/
+
+LuaEntitySAO::LuaEntitySAO(ServerEnvironment *env, v3f pos,
+		const std::string &name, const std::string &state):
+	ServerActiveObject(env, pos),
+	m_init_name(name),
+	m_init_state(state),
+	m_registered(false),
+	m_prop(new LuaEntityProperties),
+	m_velocity(0,0,0),
+	m_acceleration(0,0,0),
+	m_yaw(0),
+	m_last_sent_yaw(0),
+	m_last_sent_position(0,0,0),
+	m_last_sent_velocity(0,0,0),
+	m_last_sent_position_timer(0),
+	m_last_sent_move_precision(0)
+{
+	// Only register type if no environment supplied
+	if(env == NULL){
+		ServerActiveObject::registerType(getType(), create);
+		return;
+	}
+}
+
+LuaEntitySAO::~LuaEntitySAO()
+{
+	if(m_registered){
+		lua_State *L = m_env->getLua();
+		scriptapi_luaentity_rm(L, m_id);
+	}
+	delete m_prop;
+}
+
+void LuaEntitySAO::addedToEnvironment()
+{
+	ServerActiveObject::addedToEnvironment();
+
+	// Create entity from name and state
+	lua_State *L = m_env->getLua();
+	m_registered = scriptapi_luaentity_add(L, m_id, m_init_name.c_str(),
+			m_init_state.c_str());
+
+	if(m_registered){
+		// Get properties
+		scriptapi_luaentity_get_properties(L, m_id, m_prop);
+	}
+}
+
+ServerActiveObject* LuaEntitySAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	// read version
+	u8 version = readU8(is);
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	// read name
+	std::string name = deSerializeString(is);
+	// read state
+	std::string state = deSerializeLongString(is);
+	// create object
+	infostream<<"LuaEntitySAO::create(name=\""<<name<<"\" state=\""
+			<<state<<"\")"<<std::endl;
+	return new LuaEntitySAO(env, pos, name, state);
+}
+
+void LuaEntitySAO::step(float dtime, bool send_recommended)
+{
+	//errorstream << this << " step: old_vel=(" << m_velocity.X << "," << m_velocity.Y << "," << m_velocity.Z << ")" << std::endl;
+	//errorstream << this << " step: old_pos=(" << m_base_position.X << "," << m_base_position.Y << "," << m_base_position.Z << ")" << std::endl;
+	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
+		v3f p_pos = getBasePosition();
+		v3f p_velocity = m_velocity;
+		IGameDef *gamedef = m_env->getGameDef();
+		moveresult = collisionMovePrecise(&m_env->getMap(), gamedef,
+				pos_max_d, box, dtime, p_pos, p_velocity);
+		// Apply results
+		setBasePosition(p_pos);
+		m_velocity = p_velocity;
+		//if (moveresult.collides) errorstream << "collision" << std::endl;
+		//if (moveresult.touching_ground) errorstream << "ground" << std::endl;
+		m_velocity += dtime * m_acceleration;
+	} else {
+		m_base_position += dtime * m_velocity + 0.5 * dtime
+				* dtime * m_acceleration;
+		m_velocity += dtime * m_acceleration;
+	}
+
+	//errorstream << this << " step: new_vel=(" << m_velocity.X << "," << m_velocity.Y << "," << m_velocity.Z << ")" << std::endl;
+	//errorstream << this << " step: new_pos=(" << m_base_position.X << "," << m_base_position.Y << "," << m_base_position.Z << ")" << std::endl;
+
+	if(m_registered){
+		lua_State *L = m_env->getLua();
+		scriptapi_luaentity_step(L, m_id, dtime);
+	}
+
+	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 ||
+			m_last_sent_position_timer > 10.0){
+		sendPosition(true, false);
+	}
+}
+
+std::string LuaEntitySAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	// yaw
+	writeF1000(os, m_yaw);
+	// properties
+	std::ostringstream prop_os(std::ios::binary);
+	m_prop->serialize(prop_os);
+	os<<serializeLongString(prop_os.str());
+	// return result
+	return os.str();
+}
+
+std::string LuaEntitySAO::getStaticData()
+{
+	infostream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// name
+	os<<serializeString(m_init_name);
+	// state
+	if(m_registered){
+		lua_State *L = m_env->getLua();
+		std::string state = scriptapi_luaentity_get_staticdata(L, m_id);
+		os<<serializeLongString(state);
+	} else {
+		os<<serializeLongString(m_init_state);
+	}
+	return os.str();
+}
+
+void LuaEntitySAO::punch(ServerActiveObject *puncher, float time_from_last_punch)
+{
+	if(!m_registered){
+		// Delete unknown LuaEntities when punched
+		m_removed = true;
+		return;
+	}
+	lua_State *L = m_env->getLua();
+	scriptapi_luaentity_punch(L, m_id, puncher, time_from_last_punch);
+}
+
+void LuaEntitySAO::rightClick(ServerActiveObject *clicker)
+{
+	if(!m_registered)
+		return;
+	lua_State *L = m_env->getLua();
+	scriptapi_luaentity_rightclick(L, m_id, clicker);
+}
+
+void LuaEntitySAO::setPos(v3f pos)
+{
+	m_base_position = pos;
+	sendPosition(false, true);
+}
+
+void LuaEntitySAO::moveTo(v3f pos, bool continuous)
+{
+	m_base_position = pos;
+	if(!continuous)
+		sendPosition(true, true);
+}
+
+float LuaEntitySAO::getMinimumSavedMovement()
+{
+	return 0.1 * BS;
+}
+
+void LuaEntitySAO::setVelocity(v3f velocity)
+{
+	//errorstream << this << " Set velocity: (" << velocity.X << "," << velocity.Y << "," <<velocity.Z << ")" << std::endl;
+	m_velocity = velocity;
+}
+
+v3f LuaEntitySAO::getVelocity()
+{
+	return m_velocity;
+}
+
+void LuaEntitySAO::setAcceleration(v3f acceleration)
+{
+	m_acceleration = acceleration;
+}
+
+v3f LuaEntitySAO::getAcceleration()
+{
+	return m_acceleration;
+}
+
+void LuaEntitySAO::setYaw(float yaw)
+{
+	m_yaw = yaw;
+}
+
+float LuaEntitySAO::getYaw()
+{
+	return m_yaw;
+}
+
+void LuaEntitySAO::setTextureMod(const std::string &mod)
+{
+	std::ostringstream os(std::ios::binary);
+	// command (1 = set texture modification)
+	writeU8(os, AO_Message_type::SetTextureMod);
+	// parameters
+	os<<serializeString(mod);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+}
+
+void LuaEntitySAO::setSprite(v2s16 p, int num_frames, float framelength,
+		bool select_horiz_by_yawpitch)
+{
+	std::ostringstream os(std::ios::binary);
+	// command (2 = set sprite)
+	writeU8(os, AO_Message_type::SetSprite);
+	// parameters
+	writeV2S16(os, p);
+	writeU16(os, num_frames);
+	writeF1000(os, framelength);
+	writeU8(os, select_horiz_by_yawpitch);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+}
+
+std::string LuaEntitySAO::getName()
+{
+	return m_init_name;
+}
+
+void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
+{
+	m_last_sent_move_precision = m_base_position.getDistanceFrom(
+			m_last_sent_position);
+	m_last_sent_position_timer = 0;
+	m_last_sent_yaw = m_yaw;
+	m_last_sent_position = m_base_position;
+	m_last_sent_velocity = m_velocity;
+	//m_last_sent_acceleration = m_acceleration;
+
+	float update_interval = m_env->getSendRecommendedInterval();
+
+	std::ostringstream os(std::ios::binary);
+	// command (0 = update position)
+	writeU8(os, AO_Message_type::SetPosition);
+
+	// do_interpolate
+	writeU8(os, do_interpolate);
+	// pos
+	writeV3F1000(os, m_base_position);
+	// velocity
+	writeV3F1000(os, m_velocity);
+	// acceleration
+	writeV3F1000(os, m_acceleration);
+	// yaw
+	writeF1000(os, m_yaw);
+	// is_end_position (for interpolation)
+	writeU8(os, is_movement_end);
+	// update_interval (for interpolation)
+	writeF1000(os, update_interval);
+
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+}
+
+bool LuaEntitySAO::sendLinkMsg(ServerActiveObject* parent,v3f offset) {
+	std::ostringstream os(std::ios::binary);
+	writeU8(os, AO_Message_type::Link);
+	// parameters
+	writeU16(os, parent->getId());
+	writeV3F1000(os, offset);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+	return true;
+}
+
+bool LuaEntitySAO::sendUnlinkMsg() {
+	std::ostringstream os(std::ios::binary);
+	writeU8(os, AO_Message_type::UnLink);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+	return true;
+}
+
+// Prototype
+LuaEntitySAO proto_LuaEntitySAO(NULL, v3f(0,0,0), "_prototype", "");

src/content_sao_lua.h

@@ -0,0 +1,80 @@
+/*
+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 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 CONTENT_SAO_LUA_H_
+#define CONTENT_SAO_LUA_H_
+
+#include "content_sao.h"
+#include "serverlinkableobject.h"
+#include "scriptapi.h"
+#include "luaentity_common.h"
+
+class LuaEntitySAO : public ServerActiveObject, public ServerLinkableObject
+{
+public:
+	LuaEntitySAO(ServerEnvironment *env, v3f pos,
+			const std::string &name, const std::string &state);
+	~LuaEntitySAO();
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_LUAENTITY;}
+	virtual void addedToEnvironment();
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	void punch(ServerActiveObject *puncher, float time_from_last_punch);
+	void rightClick(ServerActiveObject *clicker);
+	void setPos(v3f pos);
+	void moveTo(v3f pos, bool continuous);
+	float getMinimumSavedMovement();
+	/* LuaEntitySAO-specific */
+	void setVelocity(v3f velocity);
+	v3f getVelocity();
+	void setAcceleration(v3f acceleration);
+	v3f getAcceleration();
+	void setYaw(float yaw);
+	float getYaw();
+	void setTextureMod(const std::string &mod);
+	void setSprite(v2s16 p, int num_frames, float framelength,
+			bool select_horiz_by_yawpitch);
+	std::string getName();
+	bool sendLinkMsg(ServerActiveObject* parent,v3f offset);
+	bool sendUnlinkMsg();
+
+private:
+	void sendPosition(bool do_interpolate, bool is_movement_end);
+
+	std::string m_init_name;
+	std::string m_init_state;
+	bool m_registered;
+	struct LuaEntityProperties *m_prop;
+
+	v3f m_velocity;
+	v3f m_acceleration;
+	float m_yaw;
+	float m_last_sent_yaw;
+	v3f m_last_sent_position;
+	v3f m_last_sent_velocity;
+	float m_last_sent_position_timer;
+	float m_last_sent_move_precision;
+};
+
+
+#endif /* CONTENT_SAO_LUA_H_ */

src/content_sao_mobv2.cpp

@@ -0,0 +1,522 @@
+/*
+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 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 "content_sao_mobv2.h"
+
+/*
+	MobV2SAO
+*/
+
+MobV2SAO::MobV2SAO(ServerEnvironment *env, v3f pos,
+		Settings *init_properties):
+	ServerActiveObject(env, pos),
+	m_move_type("ground_nodes"),
+	m_speed(0,0,0),
+	m_last_sent_position(0,0,0),
+	m_oldpos(0,0,0),
+	m_yaw(0),
+	m_counter1(0),
+	m_counter2(0),
+	m_age(0),
+	m_touching_ground(false),
+	m_hp(10),
+	m_walk_around(false),
+	m_walk_around_timer(0),
+	m_next_pos_exists(false),
+	m_shoot_reload_timer(0),
+	m_shooting(false),
+	m_shooting_timer(0),
+	m_falling(false),
+	m_disturb_timer(100000),
+	m_random_disturb_timer(0),
+	m_shoot_y(0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_properties = new Settings();
+	if(init_properties)
+		m_properties->update(*init_properties);
+
+	m_properties->setV3F("pos", pos);
+
+	setPropertyDefaults();
+	readProperties();
+}
+
+MobV2SAO::~MobV2SAO()
+{
+	delete m_properties;
+}
+
+ServerActiveObject* MobV2SAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	Settings properties;
+	properties.parseConfigLines(is, "MobArgsEnd");
+	MobV2SAO *o = new MobV2SAO(env, pos, &properties);
+	return o;
+}
+
+std::string MobV2SAO::getStaticData()
+{
+	updateProperties();
+
+	std::ostringstream os(std::ios::binary);
+	m_properties->writeLines(os);
+	return os.str();
+}
+
+std::string MobV2SAO::getClientInitializationData()
+{
+	//infostream<<__FUNCTION_NAME<<std::endl;
+
+	updateProperties();
+
+	std::ostringstream os(std::ios::binary);
+
+	// version
+	writeU8(os, 0);
+
+	Settings client_properties;
+
+	/*client_properties.set("version", "0");
+	client_properties.updateValue(*m_properties, "pos");
+	client_properties.updateValue(*m_properties, "yaw");
+	client_properties.updateValue(*m_properties, "hp");*/
+
+	// Just send everything for simplicity
+	client_properties.update(*m_properties);
+
+	std::ostringstream os2(std::ios::binary);
+	client_properties.writeLines(os2);
+	compressZlib(os2.str(), os);
+
+	return os.str();
+}
+
+void MobV2SAO::step(float dtime, bool send_recommended)
+{
+	ScopeProfiler sp2(g_profiler, "MobV2SAO::step avg", SPT_AVG);
+
+	assert(m_env);
+	Map *map = &m_env->getMap();
+
+	m_age += dtime;
+
+	if(m_die_age >= 0.0 && m_age >= m_die_age){
+		m_removed = true;
+		return;
+	}
+
+	m_random_disturb_timer += dtime;
+	if(m_random_disturb_timer >= 5.0)
+	{
+		m_random_disturb_timer = 0;
+		// Check connected players
+		core::list<Player*> players = m_env->getPlayers(true);
+		core::list<Player*>::Iterator i;
+		for(i = players.begin();
+				i != players.end(); i++)
+		{
+			Player *player = *i;
+			v3f playerpos = player->getPosition();
+			f32 dist = m_base_position.getDistanceFrom(playerpos);
+			if(dist < BS*16)
+			{
+				if(myrand_range(0,3) == 0){
+					actionstream<<"Mob id="<<m_id<<" at "
+							<<PP(m_base_position/BS)
+							<<" got randomly disturbed by "
+							<<player->getName()<<std::endl;
+					m_disturbing_player = player->getName();
+					m_disturb_timer = 0;
+					break;
+				}
+			}
+		}
+	}
+
+	Player *disturbing_player =
+			m_env->getPlayer(m_disturbing_player.c_str());
+	v3f disturbing_player_off = v3f(0,1,0);
+	v3f disturbing_player_norm = v3f(0,1,0);
+	float disturbing_player_distance = 1000000;
+	float disturbing_player_dir = 0;
+	if(disturbing_player){
+		disturbing_player_off =
+				disturbing_player->getPosition() - m_base_position;
+		disturbing_player_distance = disturbing_player_off.getLength();
+		disturbing_player_norm = disturbing_player_off;
+		disturbing_player_norm.normalize();
+		disturbing_player_dir = 180./PI*atan2(disturbing_player_norm.Z,
+				disturbing_player_norm.X);
+	}
+
+	m_disturb_timer += dtime;
+
+	if(!m_falling)
+	{
+		m_shooting_timer -= dtime;
+		if(m_shooting_timer <= 0.0 && m_shooting){
+			m_shooting = false;
+
+			std::string shoot_type = m_properties->get("shoot_type");
+			v3f shoot_pos(0,0,0);
+			shoot_pos.Y += m_properties->getFloat("shoot_y") * BS;
+			if(shoot_type == "fireball"){
+				v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+				dir.Y = m_shoot_y;
+				dir.normalize();
+				v3f speed = dir * BS * 10.0;
+				v3f pos = m_base_position + shoot_pos;
+				infostream<<__FUNCTION_NAME<<": Mob id="<<m_id
+						<<" shooting fireball from "<<PP(pos)
+						<<" at speed "<<PP(speed)<<std::endl;
+				Settings properties;
+				properties.set("looks", "fireball");
+				properties.setV3F("speed", speed);
+				properties.setFloat("die_age", 5.0);
+				properties.set("move_type", "constant_speed");
+				properties.setFloat("hp", 1000);
+				properties.set("lock_full_brightness", "true");
+				properties.set("player_hit_damage", "9");
+				properties.set("player_hit_distance", "2");
+				properties.set("player_hit_interval", "1");
+				ServerActiveObject *obj = new MobV2SAO(m_env,
+						pos, &properties);
+				//m_env->addActiveObjectAsStatic(obj);
+				m_env->addActiveObject(obj);
+			} else {
+				infostream<<__FUNCTION_NAME<<": Mob id="<<m_id
+						<<": Unknown shoot_type="<<shoot_type
+						<<std::endl;
+			}
+		}
+
+		m_shoot_reload_timer += dtime;
+
+		float reload_time = 15.0;
+		if(m_disturb_timer <= 15.0)
+			reload_time = 3.0;
+
+		bool shoot_without_player = false;
+		if(m_properties->getBool("mindless_rage"))
+			shoot_without_player = true;
+
+		if(!m_shooting && m_shoot_reload_timer >= reload_time &&
+				!m_next_pos_exists &&
+				(m_disturb_timer <= 60.0 || shoot_without_player))
+		{
+			m_shoot_y = 0;
+			if(m_disturb_timer < 60.0 && disturbing_player &&
+					disturbing_player_distance < 16*BS &&
+					fabs(disturbing_player_norm.Y) < 0.8){
+				m_yaw = disturbing_player_dir;
+				sendPosition();
+				m_shoot_y += disturbing_player_norm.Y;
+			} else {
+				m_shoot_y = 0.01 * myrand_range(-30,10);
+			}
+			m_shoot_reload_timer = 0.0;
+			m_shooting = true;
+			m_shooting_timer = 1.5;
+			{
+				std::ostringstream os(std::ios::binary);
+				// command (2 = shooting)
+				writeU8(os, AO_Message_type::Shoot);
+				// time
+				writeF1000(os, m_shooting_timer + 0.1);
+				// bright?
+				writeU8(os, true);
+				// create message and add to list
+				ActiveObjectMessage aom(getId(), false, os.str());
+				m_messages_out.push_back(aom);
+			}
+		}
+	}
+
+	if(m_move_type == "ground_nodes")
+	{
+		if(!m_shooting){
+			m_walk_around_timer -= dtime;
+			if(m_walk_around_timer <= 0.0){
+				m_walk_around = !m_walk_around;
+				if(m_walk_around)
+					m_walk_around_timer = 0.1*myrand_range(10,50);
+				else
+					m_walk_around_timer = 0.1*myrand_range(30,70);
+			}
+		}
+
+		/* Move */
+		if(m_next_pos_exists){
+			v3f pos_f = m_base_position;
+			v3f next_pos_f = intToFloat(m_next_pos_i, BS);
+
+			v3f v = next_pos_f - pos_f;
+			m_yaw = atan2(v.Z, v.X) / PI * 180;
+
+			v3f diff = next_pos_f - pos_f;
+			v3f dir = diff;
+			dir.normalize();
+			float speed = BS * 0.5;
+			if(m_falling)
+				speed = BS * 3.0;
+			dir *= dtime * speed;
+			bool arrived = false;
+			if(dir.getLength() > diff.getLength()){
+				dir = diff;
+				arrived = true;
+			}
+			pos_f += dir;
+			m_base_position = pos_f;
+
+			if((pos_f - next_pos_f).getLength() < 0.1 || arrived){
+				m_next_pos_exists = false;
+			}
+		}
+
+		v3s16 pos_i = floatToInt(m_base_position, BS);
+		v3s16 size_blocks = v3s16(m_size.X+0.5,m_size.Y+0.5,m_size.X+0.5);
+		v3s16 pos_size_off(0,0,0);
+		if(m_size.X >= 2.5){
+			pos_size_off.X = -1;
+			pos_size_off.Y = -1;
+		}
+
+		if(!m_next_pos_exists){
+			/* Check whether to drop down */
+			if(checkFreePosition(map,
+					pos_i + pos_size_off + v3s16(0,-1,0), size_blocks)){
+				m_next_pos_i = pos_i + v3s16(0,-1,0);
+				m_next_pos_exists = true;
+				m_falling = true;
+			} else {
+				m_falling = false;
+			}
+		}
+
+		if(m_walk_around)
+		{
+			if(!m_next_pos_exists){
+				/* Find some position where to go next */
+				v3s16 dps[3*3*3];
+				int num_dps = 0;
+				for(int dx=-1; dx<=1; dx++)
+				for(int dy=-1; dy<=1; dy++)
+				for(int dz=-1; dz<=1; dz++){
+					if(dx == 0 && dy == 0)
+						continue;
+					if(dx != 0 && dz != 0 && dy != 0)
+						continue;
+					dps[num_dps++] = v3s16(dx,dy,dz);
+				}
+				u32 order[3*3*3];
+				get_random_u32_array(order, num_dps);
+				for(int i=0; i<num_dps; i++){
+					v3s16 p = dps[order[i]] + pos_i;
+					bool is_free = checkFreeAndWalkablePosition(map,
+							p + pos_size_off, size_blocks);
+					if(!is_free)
+						continue;
+					m_next_pos_i = p;
+					m_next_pos_exists = true;
+					break;
+				}
+			}
+		}
+	}
+	else if(m_move_type == "constant_speed")
+	{
+		m_base_position += m_speed * dtime;
+
+		v3s16 pos_i = floatToInt(m_base_position, BS);
+		v3s16 size_blocks = v3s16(m_size.X+0.5,m_size.Y+0.5,m_size.X+0.5);
+		v3s16 pos_size_off(0,0,0);
+		if(m_size.X >= 2.5){
+			pos_size_off.X = -1;
+			pos_size_off.Y = -1;
+		}
+		bool free = checkFreePosition(map, pos_i + pos_size_off, size_blocks);
+		if(!free){
+			explodeSquare(map, pos_i, v3s16(3,3,3));
+			m_removed = true;
+			return;
+		}
+	}
+	else
+	{
+		errorstream<<"MobV2SAO::step(): id="<<m_id<<" unknown move_type=\""
+				<<m_move_type<<"\""<<std::endl;
+	}
+
+	if(send_recommended == false)
+		return;
+
+	if(m_base_position.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		sendPosition();
+	}
+}
+
+void MobV2SAO::punch(ServerActiveObject *puncher, float time_from_last_punch)
+{
+	if(!puncher)
+		return;
+
+	v3f dir = (getBasePosition() - puncher->getBasePosition()).normalize();
+
+	// A quick hack; SAO description is player name for player
+	std::string playername = puncher->getDescription();
+
+	Map *map = &m_env->getMap();
+
+	actionstream<<playername<<" punches mob id="<<m_id
+			<<" at "<<PP(m_base_position/BS)<<std::endl;
+
+	m_disturb_timer = 0;
+	m_disturbing_player = playername;
+	m_next_pos_exists = false; // Cancel moving immediately
+
+	m_yaw = wrapDegrees_180(180./PI*atan2(dir.Z, dir.X) + 180.);
+	v3f new_base_position = m_base_position + dir * BS;
+	{
+		v3s16 pos_i = floatToInt(new_base_position, BS);
+		v3s16 size_blocks = v3s16(m_size.X+0.5,m_size.Y+0.5,m_size.X+0.5);
+		v3s16 pos_size_off(0,0,0);
+		if(m_size.X >= 2.5){
+			pos_size_off.X = -1;
+			pos_size_off.Y = -1;
+		}
+		bool free = checkFreePosition(map, pos_i + pos_size_off, size_blocks);
+		if(free)
+			m_base_position = new_base_position;
+	}
+	sendPosition();
+
+
+	// "Material" properties of the MobV2
+	MaterialProperties mp;
+	mp.diggability = DIGGABLE_NORMAL;
+	mp.crackiness = -1.0;
+	mp.cuttability = 1.0;
+
+	ToolDiggingProperties tp;
+	puncher->getWieldDiggingProperties(&tp);
+
+	HittingProperties hitprop = getHittingProperties(&mp, &tp,
+			time_from_last_punch);
+
+	doDamage(hitprop.hp);
+	puncher->damageWieldedItem(hitprop.wear);
+}
+
+bool MobV2SAO::isPeaceful()
+{
+	return m_properties->getBool("is_peaceful");
+}
+
+void MobV2SAO::sendPosition()
+{
+	m_last_sent_position = m_base_position;
+
+	std::ostringstream os(std::ios::binary);
+	// command (0 = update position)
+	writeU8(os, AO_Message_type::SetPosition);
+	// pos
+	writeV3F1000(os, m_base_position);
+	// yaw
+	writeF1000(os, m_yaw);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), false, os.str());
+	m_messages_out.push_back(aom);
+}
+
+void MobV2SAO::setPropertyDefaults()
+{
+	m_properties->setDefault("is_peaceful", "false");
+	m_properties->setDefault("move_type", "ground_nodes");
+	m_properties->setDefault("speed", "(0,0,0)");
+	m_properties->setDefault("age", "0");
+	m_properties->setDefault("yaw", "0");
+	m_properties->setDefault("pos", "(0,0,0)");
+	m_properties->setDefault("hp", "0");
+	m_properties->setDefault("die_age", "-1");
+	m_properties->setDefault("size", "(1,2)");
+	m_properties->setDefault("shoot_type", "fireball");
+	m_properties->setDefault("shoot_y", "0");
+	m_properties->setDefault("mindless_rage", "false");
+}
+void MobV2SAO::readProperties()
+{
+	m_move_type = m_properties->get("move_type");
+	m_speed = m_properties->getV3F("speed");
+	m_age = m_properties->getFloat("age");
+	m_yaw = m_properties->getFloat("yaw");
+	m_base_position = m_properties->getV3F("pos");
+	m_hp = m_properties->getS32("hp");
+	m_die_age = m_properties->getFloat("die_age");
+	m_size = m_properties->getV2F("size");
+}
+void MobV2SAO::updateProperties()
+{
+	m_properties->set("move_type", m_move_type);
+	m_properties->setV3F("speed", m_speed);
+	m_properties->setFloat("age", m_age);
+	m_properties->setFloat("yaw", m_yaw);
+	m_properties->setV3F("pos", m_base_position);
+	m_properties->setS32("hp", m_hp);
+	m_properties->setFloat("die_age", m_die_age);
+	m_properties->setV2F("size", m_size);
+
+	m_properties->setS32("version", 0);
+}
+
+void MobV2SAO::doDamage(u16 d)
+{
+	infostream<<"MobV2 hp="<<m_hp<<" damage="<<d<<std::endl;
+
+	if(d < m_hp)
+	{
+		m_hp -= d;
+	}
+	else
+	{
+		actionstream<<"A "<<(isPeaceful()?"peaceful":"non-peaceful")
+				<<" mob id="<<m_id<<" dies at "<<PP(m_base_position)<<std::endl;
+		// Die
+		m_hp = 0;
+		m_removed = true;
+	}
+
+	{
+		std::ostringstream os(std::ios::binary);
+		// command (1 = damage)
+		writeU8(os, AO_Message_type::TakeDamage);
+		// amount
+		writeU16(os, d);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+// Prototype
+MobV2SAO proto_MobV2SAO(NULL, v3f(0,0,0), NULL);

src/content_sao_mobv2.h

@@ -0,0 +1,76 @@
+/*
+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 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 CONTENT_SAO_MOBV2_H_
+#define CONTENT_SAO_MOBV2_H_
+
+#include "content_sao.h"
+
+class MobV2SAO : public ServerActiveObject
+{
+public:
+	MobV2SAO(ServerEnvironment *env, v3f pos,
+			Settings *init_properties);
+	virtual ~MobV2SAO();
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_MOBV2;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	std::string getStaticData();
+	std::string getClientInitializationData();
+	void step(float dtime, bool send_recommended);
+	void punch(ServerActiveObject *puncher, float time_from_last_punch);
+	bool isPeaceful();
+private:
+	void sendPosition();
+	void setPropertyDefaults();
+	void readProperties();
+	void updateProperties();
+	void doDamage(u16 d);
+
+	std::string m_move_type;
+	v3f m_speed;
+	v3f m_last_sent_position;
+	v3f m_oldpos;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+	int m_hp;
+	bool m_walk_around;
+	float m_walk_around_timer;
+	bool m_next_pos_exists;
+	v3s16 m_next_pos_i;
+	float m_shoot_reload_timer;
+	bool m_shooting;
+	float m_shooting_timer;
+	float m_die_age;
+	v2f m_size;
+	bool m_falling;
+	float m_disturb_timer;
+	std::string m_disturbing_player;
+	float m_random_disturb_timer;
+	float m_shoot_y;
+
+	Settings *m_properties;
+};
+
+#endif /* CONTENT_SAO_MOBV2_H_ */

src/content_sao_oerkki1.cpp

@@ -0,0 +1,314 @@
+/*
+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 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 "content_sao_oerkki1.h"
+
+/*
+	Oerkki1SAO
+*/
+
+Oerkki1SAO::Oerkki1SAO(ServerEnvironment *env, v3f pos):
+	ServerActiveObject(env, pos),
+	m_is_active(false),
+	m_speed_f(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_oldpos = v3f(0,0,0);
+	m_last_sent_position = v3f(0,0,0);
+	m_yaw = 0;
+	m_counter1 = 0;
+	m_counter2 = 0;
+	m_age = 0;
+	m_touching_ground = false;
+	m_hp = 20;
+	m_after_jump_timer = 0;
+}
+
+ServerActiveObject* Oerkki1SAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	// read version
+	u8 version = readU8(is);
+	// read hp
+	u8 hp = readU8(is);
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	Oerkki1SAO *o = new Oerkki1SAO(env, pos);
+	o->m_hp = hp;
+	return o;
+}
+
+void Oerkki1SAO::step(float dtime, bool send_recommended)
+{
+	ScopeProfiler sp2(g_profiler, "Oerkki1SAO::step avg", SPT_AVG);
+
+	assert(m_env);
+
+	if(m_is_active == false)
+	{
+		if(m_inactive_interval.step(dtime, 0.5)==false)
+			return;
+	}
+
+	/*
+		The AI
+	*/
+
+	m_age += dtime;
+	if(m_age > 120)
+	{
+		// Die
+		m_removed = true;
+		return;
+	}
+
+	m_after_jump_timer -= dtime;
+
+	v3f old_speed = m_speed_f;
+
+	// Apply gravity
+	m_speed_f.Y -= dtime*9.81*BS;
+
+	/*
+		Move around if some player is close
+	*/
+	bool player_is_close = false;
+	bool player_is_too_close = false;
+	v3f near_player_pos;
+	// Check connected players
+	core::list<Player*> players = m_env->getPlayers(true);
+	core::list<Player*>::Iterator i;
+	for(i = players.begin();
+			i != players.end(); i++)
+	{
+		Player *player = *i;
+		v3f playerpos = player->getPosition();
+		f32 dist = m_base_position.getDistanceFrom(playerpos);
+		if(dist < BS*0.6)
+		{
+			m_removed = true;
+			return;
+			player_is_too_close = true;
+			near_player_pos = playerpos;
+		}
+		else if(dist < BS*15.0 && !player_is_too_close)
+		{
+			player_is_close = true;
+			near_player_pos = playerpos;
+		}
+	}
+
+	m_is_active = player_is_close;
+
+	v3f target_speed = m_speed_f;
+
+	if(!player_is_close)
+	{
+		target_speed = v3f(0,0,0);
+	}
+	else
+	{
+		// Move around
+
+		v3f ndir = near_player_pos - m_base_position;
+		ndir.Y = 0;
+		ndir.normalize();
+
+		f32 nyaw = 180./PI*atan2(ndir.Z,ndir.X);
+		if(nyaw < m_yaw - 180)
+			nyaw += 360;
+		else if(nyaw > m_yaw + 180)
+			nyaw -= 360;
+		m_yaw = 0.95*m_yaw + 0.05*nyaw;
+		m_yaw = wrapDegrees(m_yaw);
+
+		f32 speed = 2*BS;
+
+		if((m_touching_ground || m_after_jump_timer > 0.0)
+				&& !player_is_too_close)
+		{
+			v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+			target_speed.X = speed * dir.X;
+			target_speed.Z = speed * dir.Z;
+		}
+
+		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+				< dtime*speed/2)
+		{
+			m_counter1 -= dtime;
+			if(m_counter1 < 0.0)
+			{
+				m_counter1 += 0.2;
+				// Jump
+				target_speed.Y = 5.0*BS;
+				m_after_jump_timer = 1.0;
+			}
+		}
+
+		{
+			m_counter2 -= dtime;
+			if(m_counter2 < 0.0)
+			{
+				m_counter2 += (float)(myrand()%100)/100*3.0;
+				//m_yaw += ((float)(myrand()%200)-100)/100*180;
+				m_yaw += ((float)(myrand()%200)-100)/100*90;
+				m_yaw = wrapDegrees(m_yaw);
+			}
+		}
+	}
+
+	if((m_speed_f - target_speed).getLength() > BS*4 || player_is_too_close)
+		accelerate_xz(m_speed_f, target_speed, dtime*BS*8);
+	else
+		accelerate_xz(m_speed_f, target_speed, dtime*BS*4);
+
+	m_oldpos = m_base_position;
+
+	/*
+		Move it, with collision detection
+	*/
+
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*5./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	/*// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);*/
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	IGameDef *gamedef = m_env->getGameDef();
+	moveresult = collisionMovePrecise(&m_env->getMap(), gamedef,
+			pos_max_d, box, dtime, pos_f, m_speed_f);
+	m_touching_ground = moveresult.touching_ground;
+
+	// Do collision damage
+	float tolerance = BS*30;
+	float factor = BS*0.5;
+	v3f speed_diff = old_speed - m_speed_f;
+	// Increase effect in X and Z
+	speed_diff.X *= 2;
+	speed_diff.Z *= 2;
+	float vel = speed_diff.getLength();
+	if(vel > tolerance)
+	{
+		f32 damage_f = (vel - tolerance)/BS*factor;
+		u16 damage = (u16)(damage_f+0.5);
+		doDamage(damage);
+	}
+
+	setBasePosition(pos_f);
+
+	if(send_recommended == false && m_speed_f.getLength() < 3.0*BS)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		// command (0 = update position)
+		writeU8(os, AO_Message_type::SetPosition);
+		// pos
+		writeV3F1000(os, m_base_position);
+		// yaw
+		writeF1000(os, m_yaw);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string Oerkki1SAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	return os.str();
+}
+
+std::string Oerkki1SAO::getStaticData()
+{
+	//infostream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// hp
+	writeU8(os, m_hp);
+	return os.str();
+}
+
+void Oerkki1SAO::punch(ServerActiveObject *puncher, float time_from_last_punch)
+{
+	if(!puncher)
+		return;
+
+	v3f dir = (getBasePosition() - puncher->getBasePosition()).normalize();
+	m_speed_f += dir*12*BS;
+
+	// "Material" properties of an oerkki
+	MaterialProperties mp;
+	mp.diggability = DIGGABLE_NORMAL;
+	mp.crackiness = -1.0;
+	mp.cuttability = 1.0;
+
+	ToolDiggingProperties tp;
+	puncher->getWieldDiggingProperties(&tp);
+
+	HittingProperties hitprop = getHittingProperties(&mp, &tp,
+			time_from_last_punch);
+
+	doDamage(hitprop.hp);
+	puncher->damageWieldedItem(hitprop.wear);
+}
+
+void Oerkki1SAO::doDamage(u16 d)
+{
+	infostream<<"oerkki damage: "<<d<<std::endl;
+
+	if(d < m_hp)
+	{
+		m_hp -= d;
+	}
+	else
+	{
+		// Die
+		m_hp = 0;
+		m_removed = true;
+	}
+
+	{
+		std::ostringstream os(std::ios::binary);
+		// command (1 = damage)
+		writeU8(os, AO_Message_type::TakeDamage);
+		// amount
+		writeU8(os, d);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+// Prototype
+Oerkki1SAO proto_Oerkki1SAO(NULL, v3f(0,0,0));

src/content_sao_oerkki1.h

@@ -0,0 +1,55 @@
+/*
+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 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 CONTENT_SAO_OERKKI1_H_
+#define CONTENT_SAO_OERKKI1_H_
+
+#include "content_sao.h"
+
+class Oerkki1SAO : public ServerActiveObject
+{
+public:
+	Oerkki1SAO(ServerEnvironment *env, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_OERKKI1;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	void punch(ServerActiveObject *puncher, float time_from_last_punch);
+	bool isPeaceful(){return false;}
+private:
+	void doDamage(u16 d);
+
+	bool m_is_active;
+	IntervalLimiter m_inactive_interval;
+	v3f m_speed_f;
+	v3f m_oldpos;
+	v3f m_last_sent_position;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+	u8 m_hp;
+	float m_after_jump_timer;
+};
+
+#endif /* CONTENT_SAO_OERKKI1_H_ */

src/content_sao_rat.cpp

@@ -0,0 +1,212 @@
+/*
+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 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 "content_sao_rat.h"
+
+/*
+	RatSAO
+*/
+RatSAO::RatSAO(ServerEnvironment *env, v3f pos):
+	ServerActiveObject(env, pos),
+	m_is_active(false),
+	m_speed_f(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_oldpos = v3f(0,0,0);
+	m_last_sent_position = v3f(0,0,0);
+	m_yaw = myrand_range(0,PI*2);
+	m_counter1 = 0;
+	m_counter2 = 0;
+	m_age = 0;
+	m_touching_ground = false;
+}
+
+ServerActiveObject* RatSAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	char buf[1];
+	// read version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	return new RatSAO(env, pos);
+}
+
+void RatSAO::step(float dtime, bool send_recommended)
+{
+	ScopeProfiler sp2(g_profiler, "RatSAO::step avg", SPT_AVG);
+
+	assert(m_env);
+
+	if(m_is_active == false)
+	{
+		if(m_inactive_interval.step(dtime, 0.5)==false)
+			return;
+	}
+
+	/*
+		The AI
+	*/
+
+	/*m_age += dtime;
+	if(m_age > 60)
+	{
+		// Die
+		m_removed = true;
+		return;
+	}*/
+
+	// Apply gravity
+	m_speed_f.Y -= dtime*9.81*BS;
+
+	/*
+		Move around if some player is close
+	*/
+	bool player_is_close = false;
+	// Check connected players
+	core::list<Player*> players = m_env->getPlayers(true);
+	core::list<Player*>::Iterator i;
+	for(i = players.begin();
+			i != players.end(); i++)
+	{
+		Player *player = *i;
+		v3f playerpos = player->getPosition();
+		if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
+		{
+			player_is_close = true;
+			break;
+		}
+	}
+
+	m_is_active = player_is_close;
+
+	if(player_is_close == false)
+	{
+		m_speed_f.X = 0;
+		m_speed_f.Z = 0;
+	}
+	else
+	{
+		// Move around
+		v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+		f32 speed = 2*BS;
+		m_speed_f.X = speed * dir.X;
+		m_speed_f.Z = speed * dir.Z;
+
+		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+				< dtime*speed/2)
+		{
+			m_counter1 -= dtime;
+			if(m_counter1 < 0.0)
+			{
+				m_counter1 += 1.0;
+				m_speed_f.Y = 5.0*BS;
+			}
+		}
+
+		{
+			m_counter2 -= dtime;
+			if(m_counter2 < 0.0)
+			{
+				m_counter2 += (float)(myrand()%100)/100*3.0;
+				m_yaw += ((float)(myrand()%200)-100)/100*180;
+				m_yaw = wrapDegrees(m_yaw);
+			}
+		}
+	}
+
+	m_oldpos = m_base_position;
+
+	/*
+		Move it, with collision detection
+	*/
+
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	IGameDef *gamedef = m_env->getGameDef();
+	moveresult = collisionMoveSimple(&m_env->getMap(), gamedef,
+			pos_max_d, box, dtime, pos_f, m_speed_f);
+	m_touching_ground = moveresult.touching_ground;
+
+	setBasePosition(pos_f);
+
+	if(send_recommended == false)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		// command (0 = update position)
+		writeU8(os, 0);
+		// pos
+		writeV3F1000(os, m_base_position);
+		// yaw
+		writeF1000(os, m_yaw);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string RatSAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	return os.str();
+}
+
+std::string RatSAO::getStaticData()
+{
+	//infostream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	return os.str();
+}
+
+void RatSAO::punch(ServerActiveObject *puncher, float time_from_last_punch)
+{
+	std::istringstream is("CraftItem rat 1", std::ios_base::binary);
+	IGameDef *gamedef = m_env->getGameDef();
+	InventoryItem *item = InventoryItem::deSerialize(is, gamedef);
+	bool fits = puncher->addToInventory(item);
+	if(fits)
+		m_removed = true;
+	else
+		delete item;
+}
+
+// Prototype
+RatSAO proto_RatSAO(NULL, v3f(0,0,0));

src/content_sao_rat.h

@@ -0,0 +1,50 @@
+/*
+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 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 CONTENT_SAO_RAT_H_
+#define CONTENT_SAO_RAT_H_
+
+#include "content_sao.h"
+
+class RatSAO : public ServerActiveObject
+{
+public:
+	RatSAO(ServerEnvironment *env, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_RAT;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	void punch(ServerActiveObject *puncher, float time_from_last_punch);
+private:
+	bool m_is_active;
+	IntervalLimiter m_inactive_interval;
+	v3f m_speed_f;
+	v3f m_oldpos;
+	v3f m_last_sent_position;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+};
+
+#endif /* CONTENT_SAO_RAT_H_ */

src/content_sao_test.cpp

@@ -0,0 +1,90 @@
+/*
+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 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 "content_sao.h"
+
+
+class TestSAO : public ServerActiveObject
+{
+public:
+	TestSAO(ServerEnvironment *env, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_TEST;}
+	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+private:
+	float m_timer1;
+	float m_age;
+};
+
+
+/*
+	TestSAO
+*/
+
+TestSAO::TestSAO(ServerEnvironment *env, v3f pos):
+	ServerActiveObject(env, pos),
+	m_timer1(0),
+	m_age(0)
+{
+	ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* TestSAO::create(ServerEnvironment *env, v3f pos,
+		const std::string &data)
+{
+	return new TestSAO(env, pos);
+}
+
+void TestSAO::step(float dtime, bool send_recommended)
+{
+	m_age += dtime;
+	if(m_age > 10)
+	{
+		m_removed = true;
+		return;
+	}
+
+	m_base_position.Y += dtime * BS * 2;
+	if(m_base_position.Y > 8*BS)
+		m_base_position.Y = 2*BS;
+
+	if(send_recommended == false)
+		return;
+
+	m_timer1 -= dtime;
+	if(m_timer1 < 0.0)
+	{
+		m_timer1 += 0.125;
+
+		std::string data;
+
+		data += itos(AO_Message_type::SetPosition); // 0 = position
+		data += " ";
+		data += itos(m_base_position.X);
+		data += " ";
+		data += itos(m_base_position.Y);
+		data += " ";
+		data += itos(m_base_position.Z);
+
+		ActiveObjectMessage aom(getId(), false, data);
+		m_messages_out.push_back(aom);
+	}
+}

src/environment.cpp

@@ -765,6 +765,21 @@ void ServerEnvironment::activateBlock(MapBlock *block, u32 additional_dtime)
 	abmhandler.apply(block);
 }
 
+core::list<MapNode> ServerEnvironment::getNodesInsideRadius(v3s16 pos, float radius)
+{
+	core::list<MapNode> nodes;
+	for (int i = pos.X - radius; i < pos.X + radius; i ++)
+	for (int j = pos.Y - radius; j < pos.Y + radius; j ++)
+	for (int k = pos.Z - radius; k < pos.Z + radius; k ++) {
+		v3s16 current_pos = v3s16(i,j,k);
+		if (current_pos.getDistanceFrom(pos) < radius) {
+			MapNode n = m_map->getNodeNoEx(current_pos);
+			nodes.push_back(n);
+			}
+		}
+	return nodes;
+}
+
 void ServerEnvironment::addActiveBlockModifier(ActiveBlockModifier *abm)
 {
 	m_abms.push_back(ABMWithState(abm));
@@ -1875,6 +1890,7 @@ void ClientEnvironment::step(float dtime)
 		Get the speed the player is going
 	*/
 	bool is_climbing = lplayer->is_climbing;
+	bool linked      = lplayer->m_linked;
 	
 	f32 player_speed = lplayer->getSpeed().getLength();
 	
@@ -1903,96 +1919,98 @@ void ClientEnvironment::step(float dtime)
 	/*
 		Stuff that has a maximum time increment
 	*/
+	//TODO at this position possibly a better solution is required!
+	if (!linked) {
+		u32 loopcount = 0;
+		do
+		{
+			loopcount++;
 
-	u32 loopcount = 0;
-	do
-	{
-		loopcount++;
-
-		f32 dtime_part;
-		if(dtime_downcount > dtime_max_increment)
-		{
-			dtime_part = dtime_max_increment;
-			dtime_downcount -= dtime_part;
-		}
-		else
-		{
-			dtime_part = dtime_downcount;
-			/*
-				Setting this to 0 (no -=dtime_part) disables an infinite loop
-				when dtime_part is so small that dtime_downcount -= dtime_part
-				does nothing
-			*/
-			dtime_downcount = 0;
-		}
-		
-		/*
-			Handle local player
-		*/
-		
-		{
-			v3f lplayerpos = lplayer->getPosition();
-			
-			// Apply physics
-			if(free_move == false && is_climbing == false)
+			f32 dtime_part;
+			if(dtime_downcount > dtime_max_increment)
 			{
-				// Gravity
-				v3f speed = lplayer->getSpeed();
-				if(lplayer->swimming_up == false)
-					speed.Y -= 9.81 * BS * dtime_part * 2;
-
-				// Water resistance
-				if(lplayer->in_water_stable || lplayer->in_water)
-				{
-					f32 max_down = 2.0*BS;
-					if(speed.Y < -max_down) speed.Y = -max_down;
-
-					f32 max = 2.5*BS;
-					if(speed.getLength() > max)
-					{
-						speed = speed / speed.getLength() * max;
-					}
-				}
-
-				lplayer->setSpeed(speed);
+				dtime_part = dtime_max_increment;
+				dtime_downcount -= dtime_part;
+			}
+			else
+			{
+				dtime_part = dtime_downcount;
+				/*
+					Setting this to 0 (no -=dtime_part) disables an infinite loop
+					when dtime_part is so small that dtime_downcount -= dtime_part
+					does nothing
+				*/
+				dtime_downcount = 0;
 			}
 
 			/*
-				Move the lplayer.
-				This also does collision detection.
+				Handle local player
 			*/
-			lplayer->move(dtime_part, *m_map, position_max_increment,
-					&player_collisions);
-		}
-	}
-	while(dtime_downcount > 0.001);
-		
-	//std::cout<<"Looped "<<loopcount<<" times."<<std::endl;
-	
-	for(core::list<CollisionInfo>::Iterator
-			i = player_collisions.begin();
-			i != player_collisions.end(); i++)
-	{
-		CollisionInfo &info = *i;
-		if(info.t == COLLISION_FALL)
-		{
-			//f32 tolerance = BS*10; // 2 without damage
-			f32 tolerance = BS*12; // 3 without damage
-			f32 factor = 1;
-			if(info.speed > tolerance)
+			
 			{
-				f32 damage_f = (info.speed - tolerance)/BS*factor;
-				u16 damage = (u16)(damage_f+0.5);
-				if(lplayer->hp > damage)
-					lplayer->hp -= damage;
-				else
-					lplayer->hp = 0;
+				v3f lplayerpos = lplayer->getPosition();
 
-				ClientEnvEvent event;
-				event.type = CEE_PLAYER_DAMAGE;
-				event.player_damage.amount = damage;
-				event.player_damage.send_to_server = true;
-				m_client_event_queue.push_back(event);
+				// Apply physics
+				if(free_move == false && is_climbing == false)
+				{
+					// Gravity
+					v3f speed = lplayer->getSpeed();
+					if(lplayer->swimming_up == false)
+						speed.Y -= 9.81 * BS * dtime_part * 2;
+
+					// Water resistance
+					if(lplayer->in_water_stable || lplayer->in_water)
+					{
+						f32 max_down = 2.0*BS;
+						if(speed.Y < -max_down) speed.Y = -max_down;
+
+						f32 max = 2.5*BS;
+						if(speed.getLength() > max)
+						{
+							speed = speed / speed.getLength() * max;
+						}
+					}
+
+					lplayer->setSpeed(speed);
+				}
+
+				/*
+					Move the lplayer.
+					This also does collision detection.
+				*/
+				lplayer->move(dtime_part, *m_map, position_max_increment,
+						&player_collisions);
+			}
+		}
+		while(dtime_downcount > 0.001);
+
+		//std::cout<<"Looped "<<loopcount<<" times."<<std::endl;
+		
+		for(core::list<CollisionInfo>::Iterator
+				i = player_collisions.begin();
+				i != player_collisions.end(); i++)
+		{
+			CollisionInfo &info = *i;
+			if(info.t == COLLISION_FALL)
+			{
+				//f32 tolerance = BS*10; // 2 without damage
+				f32 tolerance = BS*12; // 3 without damage
+				f32 factor = 1;
+				if(info.speed > tolerance)
+				{
+					f32 damage_f = (info.speed - tolerance)/BS*factor;
+					u16 damage = (u16)(damage_f+0.5);
+					if(lplayer->hp > damage)
+						lplayer->hp -= damage;
+					else
+						lplayer->hp = 0;
+
+					ClientEnvEvent event;
+					event.type = CEE_PLAYER_DAMAGE;
+					event.player_damage.amount = damage;
+					event.player_damage.send_to_server = true;
+					m_client_event_queue.push_back(event);
+				}
 			}
 		}
 	}

src/environment.h

@@ -270,6 +270,9 @@ class ServerEnvironment : public Environment
 		-------------------------------------------
 	*/
 	
+	// Find all nodes inside a radius around a point
+	core::list<MapNode> getNodesInsideRadius(v3s16 pos, float radius);
+
 	// Find all active objects inside a radius around a point
 	std::set<u16> getObjectsInsideRadius(v3f pos, float radius);
 	

src/inventory.cpp

@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "serverobject.h"
 #include "content_mapnode.h"
 #include "content_sao.h"
+#include "content_sao_item.h"
 #include "environment.h"
 #include "mapblock.h"
 #include "player.h"

src/mesh.cpp

@@ -82,6 +82,105 @@ scene::IAnimatedMesh* createCubeMesh(v3f scale)
 	return anim_mesh;
 }
 
+scene::IAnimatedMesh* createCubeMesh(v3f scale,core::aabbox3d<f32> box)
+{
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[24] =
+	{
+		// Up
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MinEdge.Z, 0,1,0, c, 0,1),
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, 0,1,0, c, 0,0),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, 0,1,0, c, 1,0),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MinEdge.Z, 0,1,0, c, 1,1),
+		// Down
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MinEdge.Z, 0,-1,0, c, 0,0),
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MinEdge.Z, 0,-1,0, c, 1,0),
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MaxEdge.Z, 0,-1,0, c, 1,1),
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MaxEdge.Z, 0,-1,0, c, 0,1),
+		// Right
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MinEdge.Z, 1,0,0, c, 0,1),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MinEdge.Z, 1,0,0, c, 0,0),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, 1,0,0, c, 1,0),
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MaxEdge.Z, 1,0,0, c, 1,1),
+		// Left
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MinEdge.Z, -1,0,0, c, 1,1),
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MaxEdge.Z, -1,0,0, c, 0,1),
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, -1,0,0, c, 0,0),
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MinEdge.Z, -1,0,0, c, 1,0),
+		// Back
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MaxEdge.Z, 0,0,1, c, 1,1),
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MaxEdge.Z, 0,0,1, c, 0,1),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, 0,0,1, c, 0,0),
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MaxEdge.Z, 0,0,1, c, 1,0),
+		// Front
+		video::S3DVertex(box.MinEdge.X,box.MinEdge.Y,box.MinEdge.Z, 0,0,-1, c, 0,1),
+		video::S3DVertex(box.MinEdge.X,box.MaxEdge.Y,box.MinEdge.Z, 0,0,-1, c, 0,0),
+		video::S3DVertex(box.MaxEdge.X,box.MaxEdge.Y,box.MinEdge.Z, 0,0,-1, c, 1,0),
+		video::S3DVertex(box.MaxEdge.X,box.MinEdge.Y,box.MinEdge.Z, 0,0,-1, c, 1,1),
+	};
+
+	u16 indices[6] = {0,1,2,2,3,0};
+
+	scene::SMesh *mesh = new scene::SMesh();
+	for (u32 i=0; i<6; ++i)
+	{
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		buf->append(vertices + 4 * i, 4, indices, 6);
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+	}
+	scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(mesh);
+	mesh->drop();
+	scaleMesh(anim_mesh, scale);  // also recalculates bounding box
+	return anim_mesh;
+}
+
+scene::IAnimatedMesh* createPlantMesh(v3f scale)
+{
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[16] =
+	{
+			// Plane 1 Front
+			video::S3DVertex(-0.5,-0.5,-0.5, 0.5,0,-0.5, c, 0,1),
+			video::S3DVertex(-0.5,+0.5,-0.5, 0.5,0,-0.5, c, 0,0),
+			video::S3DVertex(+0.5,+0.5,+0.5, 0.5,0,-0.5, c, 1,0),
+			video::S3DVertex(+0.5,-0.5,+0.5, 0.5,0,-0.5, c, 1,1),
+			// Plane 1 Back
+			video::S3DVertex(+0.5,-0.5,+0.5, -0.5,0,0.5, c, 1,1),
+			video::S3DVertex(+0.5,+0.5,+0.5, -0.5,0,0.5, c, 1,0),
+			video::S3DVertex(-0.5,+0.5,-0.5, -0.5,0,0.5, c, 0,0),
+			video::S3DVertex(-0.5,-0.5,-0.5, -0.5,0,0.5, c, 0,1),
+
+			// Plane 2 Front
+			video::S3DVertex(-0.5,-0.5,+0.5, -0.5,0,-0.5, c, 1,1),
+			video::S3DVertex(-0.5,+0.5,+0.5, -0.5,0,-0.5, c, 1,0),
+			video::S3DVertex(+0.5,+0.5,-0.5, -0.5,0,-0.5, c, 0,0),
+			video::S3DVertex(+0.5,-0.5,-0.5, -0.5,0,-0.5, c, 0,1),
+
+			// Plane 2 Back
+			video::S3DVertex(+0.5,-0.5,-0.5, 0.5,0,0.5, c, 0,1),
+			video::S3DVertex(+0.5,+0.5,-0.5, 0.5,0,0.5, c, 0,0),
+			video::S3DVertex(-0.5,+0.5,+0.5, 0.5,0,0.5, c, 1,0),
+			video::S3DVertex(-0.5,-0.5,+0.5, 0.5,0,0.5, c, 1,1)
+
+	};
+
+	u16 indices[6] = {0,1,2,2,3,0};
+
+	scene::SMesh *mesh = new scene::SMesh();
+	for (u32 i=0; i<4; ++i)
+	{
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		buf->append(vertices + 4 * i, 4, indices, 6);
+		mesh->addMeshBuffer(buf);
+		buf->drop();
+	}
+	scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(mesh);
+	mesh->drop();
+	scaleMesh(anim_mesh, scale);  // also recalculates bounding box
+	return anim_mesh;
+}
+
 static scene::IAnimatedMesh* extrudeARGB(u32 twidth, u32 theight, u8 *data)
 {
 	const s32 argb_wstep = 4 * twidth;

src/mesh.h

@@ -31,6 +31,15 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 scene::IAnimatedMesh* createCubeMesh(v3f scale);
 
+/*
+	Create a new cube mesh not linked to mapnode size.
+	Vertices are defined by given box.
+
+	The resulting mesh has 6 materials (up, down, right, left, back, front)
+	which must be defined by the caller.
+*/
+scene::IAnimatedMesh* createCubeMesh(v3f scale,core::aabbox3d<f32> box);
+
 /*
 	Create a new extruded mesh from a texture.
 	Maximum bounding box is (+-scale.X/2, +-scale.Y/2, +-scale.Z).
@@ -41,6 +50,16 @@ scene::IAnimatedMesh* createCubeMesh(v3f scale);
 scene::IAnimatedMesh* createExtrudedMesh(video::ITexture *texture,
 		video::IVideoDriver *driver, v3f scale);
 
+
+/*
+	Create a new plant style mesh.
+	Vertices are at (+-scale.X/2, +-scale.Y/2, +-scale.Z/2).
+
+	The resulting mesh has 4 materials (right, left, back, front)
+	which must be defined by the caller.
+*/
+scene::IAnimatedMesh* createPlantMesh(v3f scale);
+
 /*
 	Multiplies each vertex coordinate by the specified scaling factors
 	(componentwise vector multiplication).

src/player.cpp

@@ -183,7 +183,8 @@ void Player::deSerialize(std::istream &is)
 LocalPlayer::LocalPlayer(IGameDef *gamedef):
 	Player(gamedef),
 	m_sneak_node(32767,32767,32767),
-	m_sneak_node_exists(false)
+	m_sneak_node_exists(false),
+	m_linked(false)
 {
 	// Initialize hp to 0, so that no hearts will be shown if server
 	// doesn't support health points

src/player.h

@@ -251,6 +251,13 @@ class LocalPlayer : public Player
 	
 	PlayerControl control;
 
+
+	inline void Link(bool value) {
+		m_linked = value;
+	}
+
+	bool m_linked;
+
 private:
 	// This is used for determining the sneaking range
 	v3s16 m_sneak_node;

src/scriptapi.cpp

@@ -35,7 +35,11 @@ extern "C" {
 #include "script.h"
 //#include "luna.h"
 #include "luaentity_common.h"
-#include "content_sao.h" // For LuaEntitySAO
+#include "content_sao.h"
+#include "content_sao_lua.h" // For LuaEntitySAO
+#include "content_sao_item.h"
+#include "content_sao_rat.h"
+#include "content_sao_firefly.h"
 #include "tooldef.h"
 #include "nodedef.h"
 #include "craftdef.h"
@@ -46,6 +50,7 @@ extern "C" {
 #include "mapblock.h" // For getNodeBlockPos
 #include "content_nodemeta.h"
 #include "utility.h"
+#include "serverlinkableobject.h"
 
 static void stackDump(lua_State *L, std::ostream &o)
 {
@@ -1753,7 +1758,7 @@ class ObjectRef
 			get_server(L)->SendMovePlayer(player);
 		return 0;
 	}
-	
+
 	// moveto(self, pos, continuous=false)
 	static int l_moveto(lua_State *L)
 	{
@@ -2173,6 +2178,62 @@ class ObjectRef
 		return 1;
 	}
 
+	// link(parent, offset)
+	static int l_link(lua_State *L)
+	{
+		ObjectRef *ref_child  = checkobject(L, 1);
+		ObjectRef *ref_parent =  checkobject(L, 2);
+		v3f            offset = checkFloatPos(L, 3);
+
+		ServerActiveObject *child  = getobject(ref_child);
+		ServerActiveObject *parent = getobject(ref_parent);
+
+		if ((child == NULL) || (parent == NULL)) {
+			errorstream << "LUA: link(): invalid parameters" << std::endl;
+			return 0;
+		}
+
+
+		ServerLinkableObject* child_lua  = dynamic_cast<ServerLinkableObject*>(child);
+		ServerLinkableObject* parent_lua = dynamic_cast<ServerLinkableObject*>(parent);
+
+		if (child_lua == NULL)  return 0;
+		if (parent_lua == NULL) return 0;
+
+		if (child_lua->linkEntity(parent,offset)) {
+			lua_pushboolean(L, true);
+			return 1;
+		}
+		else {
+			return 0;
+		}
+	}
+
+	// unlink()
+	static int l_unlink(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+
+		ServerActiveObject *obj = getobject(ref);
+
+		if (obj == NULL) {
+			errorstream << "LUA: unlink(): invalid parameters" << std::endl;
+			return 0;
+		}
+
+		ServerLinkableObject* tolink = dynamic_cast<ServerLinkableObject*>(obj);
+
+		if (tolink == NULL) return 0;
+
+		if (tolink->unlinkEntity()) {
+			lua_pushboolean(L, true);
+			return 1;
+		}
+		else {
+			return 0;
+		}
+	}
+
 public:
 	ObjectRef(ServerActiveObject *object):
 		m_object(object)
@@ -2270,6 +2331,8 @@ const luaL_reg ObjectRef::methods[] = {
 	method(ObjectRef, get_look_dir),
 	method(ObjectRef, get_look_pitch),
 	method(ObjectRef, get_look_yaw),
+	method(ObjectRef, link),
+	method(ObjectRef, unlink),
 	{0,0}
 };
 
@@ -2543,6 +2606,35 @@ class EnvRef
 		return 1;
 	}
 
+	// EnvRef:get_objects_inside_radius(pos, radius)
+	static int l_get_nodes_inside_radius(lua_State *L)
+	{
+		// Get the table insert function
+		lua_getglobal(L, "table");
+		lua_getfield(L, -1, "insert");
+		int table_insert = lua_gettop(L);
+		// Get environemnt
+		EnvRef *o = checkobject(L, 1);
+		ServerEnvironment *env = o->m_env;
+		if(env == NULL) return 0;
+		// Do it
+		v3s16 pos = read_v3s16(L, 2);
+		float radius = luaL_checknumber(L, 3);// * BS;
+		core::list<MapNode> nodes = env->getNodesInsideRadius(pos, radius);
+		lua_newtable(L);
+		int table = lua_gettop(L);
+		for(core::list<MapNode>::Iterator
+				i = nodes.begin(); i != nodes.end(); i++){
+			// Insert object reference into table
+			lua_pushvalue(L, table_insert);
+			lua_pushvalue(L, table);
+			pushnode(L, *i, env->getGameDef()->ndef());
+			if(lua_pcall(L, 2, 0, 0))
+				script_error(L, "error: %s", lua_tostring(L, -1));
+		}
+		return 1;
+	}
+
 	static int gc_object(lua_State *L) {
 		EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
 		delete o;
@@ -2620,6 +2712,7 @@ const luaL_reg EnvRef::methods[] = {
 	method(EnvRef, get_meta),
 	method(EnvRef, get_player_by_name),
 	method(EnvRef, get_objects_inside_radius),
+	method(EnvRef, get_nodes_inside_radius),
 	{0,0}
 };
 

src/serverlinkableobject.cpp

@@ -0,0 +1,53 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 sapier sapier at gmx dot 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 "serverlinkableobject.h"
+
+
+ServerLinkableObject::ServerLinkableObject() {
+	this->m_Linked = false;
+}
+
+ServerLinkableObject::~ServerLinkableObject() {}
+
+bool ServerLinkableObject::linkEntity(ServerActiveObject* parent,v3f offset) {
+	//check if entity is in correct state
+	if (this->m_Linked == true) {
+		errorstream<<"ServerLinkableObject: link but object already linked!"<<std::endl;
+		return false;
+	}
+	this->m_Linked = true;
+
+	errorstream<<"ServerLinkableObject: try to send link message!"<<std::endl;
+	return sendLinkMsg(parent,offset);
+}
+
+bool ServerLinkableObject::unlinkEntity() {
+	//check if entity is in correct state
+	if (this->m_Linked == false) {
+		errorstream<<"ServerLinkableObject: unlink but object not linked!"<<std::endl;
+		return false;
+	}
+
+	this->m_Linked = false;
+
+	errorstream<<"ServerLinkableObject: try to send unlink message!"<<std::endl;
+	return sendUnlinkMsg();
+}

src/serverlinkableobject.h

@@ -0,0 +1,49 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2012 sapier sapier at gmx dot 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 SERVERLINKABLEOBJECT_H_
+#define SERVERLINKABLEOBJECT_H_
+
+#include <sstream>
+#include <irrlichttypes.h>
+#include "serverobject.h"
+#include "content_object.h"
+#include "log.h"
+
+class ServerLinkableObject {
+	public:
+		ServerLinkableObject();
+		~ServerLinkableObject();
+
+		bool linkEntity(ServerActiveObject* parent,v3f offset);
+		bool unlinkEntity();
+
+		virtual bool sendLinkMsg(ServerActiveObject* parent,v3f offset) = 0;
+		virtual bool sendUnlinkMsg() = 0;
+
+	protected:
+		inline bool isLinked() { return m_Linked; }
+
+	private:
+		bool m_Linked;
+
+};
+
+#endif /* SERVERLINKABLEOBJECT_H_ */

src/serverobject.cpp

@@ -43,8 +43,8 @@ ServerActiveObject* ServerActiveObject::create(u8 type,
 		const std::string &data)
 {
 	// Find factory function
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(type);
+	core::map<u8, Factory>::Node *n;
+	n = ServerActiveObject::getTypes().find(type);
 	if(n == NULL)
 	{
 		// If factory is not found, just return.
@@ -58,13 +58,13 @@ ServerActiveObject* ServerActiveObject::create(u8 type,
 	return object;
 }
 
-void ServerActiveObject::registerType(u16 type, Factory f)
+void ServerActiveObject::registerType(u8 type, Factory f)
 {
-	core::map<u16, Factory>::Node *n;
-	n = m_types.find(type);
+	core::map<u8, Factory>::Node *n;
+	n = ServerActiveObject::getTypes().find(type);
 	if(n)
 		return;
-	m_types.insert(type, f);
+	ServerActiveObject::getTypes().insert(type, f);
 }
 
 void ServerActiveObject::getWieldDiggingProperties(ToolDiggingProperties *dst)

src/serverobject.h

@@ -200,14 +200,17 @@ class ServerActiveObject : public ActiveObject
 	typedef ServerActiveObject* (*Factory)
 			(ServerEnvironment *env, v3f pos,
 			const std::string &data);
-	static void registerType(u16 type, Factory f);
+	static void registerType(u8 type, Factory f);
 
 	ServerEnvironment *m_env;
 	v3f m_base_position;
 
 private:
-	// Used for creating objects based on type
-	static core::map<u16, Factory> m_types;
+    static core::map<u8, Factory>& getTypes()
+    {
+        static core::map<u8, Factory> types;
+        return types;
+    }
 };
 
 #endif

src/serverremoteplayer.cpp

@@ -101,13 +101,17 @@ void ServerRemotePlayer::step(float dtime, bool send_recommended)
 	if(send_recommended == false)
 		return;
 	
+	if(isLinked())
+		return;
+
+
 	if(m_position_not_sent)
 	{
 		m_position_not_sent = false;
 
 		std::ostringstream os(std::ios::binary);
 		// command (0 = update position)
-		writeU8(os, 0);
+		writeU8(os,AO_Message_type::SetPosition );
 		// pos
 		writeV3F1000(os, getPosition());
 		// yaw
@@ -173,7 +177,7 @@ void ServerRemotePlayer::punch(ServerActiveObject *puncher,
 	{
 		std::ostringstream os(std::ios::binary);
 		// command (1 = punched)
-		writeU8(os, 1);
+		writeU8(os, AO_Message_type::Punched);
 		// damage
 		writeS16(os, hitprop.hp);
 		// create message and add to list
@@ -323,4 +327,24 @@ s16 ServerRemotePlayer::getHP()
 	return hp;
 }
 
+bool ServerRemotePlayer::sendLinkMsg(ServerActiveObject* parent,v3f offset) {
+	std::ostringstream os(std::ios::binary);
+	writeU8(os, AO_Message_type::Link);
+	// parameters
+	writeU16(os, parent->getId());
+	writeV3F1000(os, offset);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), true, os.str());
+	m_messages_out.push_back(aom);
+	return true;
+}
+
+bool ServerRemotePlayer::sendUnlinkMsg() {
+	std::ostringstream os(std::ios::binary);
+	writeU8(os, AO_Message_type::UnLink);
+	// create message and add to list
+	ActiveObjectMessage aom(getId(), true, os.str());
+	m_messages_out.push_back(aom);
+	return true;
+}
 

src/serverremoteplayer.h

@@ -22,13 +22,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "player.h"
 #include "serverobject.h"
+#include "serverlinkableobject.h"
 #include "content_object.h" // Object type IDs
 
 /*
 	Player on the server
 */
 
-class ServerRemotePlayer : public Player, public ServerActiveObject
+class ServerRemotePlayer : public Player, public ServerActiveObject, public ServerLinkableObject
 {
 public:
 	ServerRemotePlayer(ServerEnvironment *env);
@@ -97,6 +98,9 @@ class ServerRemotePlayer : public Player, public ServerActiveObject
 	// Incremented by step(), read and reset by Server
 	float m_time_from_last_punch;
 
+	bool sendLinkMsg(ServerActiveObject* parent,v3f offset);
+	bool sendUnlinkMsg();
+
 private:
 	bool m_position_not_sent;
 };