Improve luaentity sprite functionality (and add some random stuff)

data/mods/default/init.lua

@@ -49,6 +49,9 @@
 -- - setpos(pos); pos={x=num, y=num, z=num}
 -- - moveto(pos, continuous=false): interpolated move
 -- - add_to_inventory(itemstring): add an item to object inventory
+-- - settexturemod(mod)
+-- - setsprite(p={x=0,y=0}, num_frames=1, framelength=0.2,
+-- -           select_horiz_by_yawpitch=false)
 --
 -- Registered entities:
 -- - Functions receive a "luaentity" as self:
@@ -1171,8 +1174,6 @@ local TNT = {
 	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
 	visual = "cube",
 	textures = {"tnt_top.png","tnt_bottom.png","tnt_side.png","tnt_side.png","tnt_side.png","tnt_side.png"},
-	--visual = "single_sprite",
-	--textures = {"mese.png^[forcesingle"},
 	-- Initial value for our timer
 	timer = 0,
 	-- Number of punches required to defuse
@@ -1227,6 +1228,36 @@ print("TNT dump: "..dump(TNT))
 print("Registering TNT");
 minetest.register_entity("TNT", TNT)
 
+
+minetest.register_entity("testentity", {
+	-- Static definition
+	physical = true, -- Collides with things
+	-- weight = 5,
+	collisionbox = {-0.7,-1.35,-0.7, 0.7,1.0,0.7},
+	--collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
+	visual = "sprite",
+	visual_size = {x=2, y=3},
+	textures = {"dungeon_master.png^[makealpha:128,0,0^[makealpha:128,128,0"},
+	spritediv = {x=6, y=5},
+	initial_sprite_basepos = {x=0, y=0},
+
+	on_activate = function(self, staticdata)
+		print("testentity.on_activate")
+		self.object:setsprite({x=0,y=0}, 1, 0, true)
+		--self.object:setsprite({x=0,y=0}, 4, 0.3, true)
+
+		-- Set gravity
+		self.object:setacceleration({x=0, y=-10, z=0})
+		-- Jump a bit upwards
+		self.object:setvelocity({x=0, y=10, z=0})
+	end,
+
+	on_punch = function(self, hitter)
+		self.object:remove()
+		hitter:add_to_inventory('CraftItem testobject1 1')
+	end,
+})
+
 --
 -- Falling stuff
 --

src/collision.cpp

@@ -72,11 +72,16 @@ collisionMoveResult collisionMoveSimple(Map *map, IGameDef *gamedef,
 	
 	/*
 		Go through every node around the object
-		TODO: Calculate the range of nodes that need to be checked
 	*/
-	for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
+	s16 min_x = (box_0.MinEdge.X / BS) - 2;
-	for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
+	s16 min_y = (box_0.MinEdge.Y / BS) - 2;
-	for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
+	s16 min_z = (box_0.MinEdge.Z / BS) - 2;
+	s16 max_x = (box_0.MaxEdge.X / BS) + 1;
+	s16 max_y = (box_0.MaxEdge.Y / BS) + 1;
+	s16 max_z = (box_0.MaxEdge.Z / BS) + 1;
+	for(s16 y = oldpos_i.Y + min_y; y <= oldpos_i.Y + max_y; y++)
+	for(s16 z = oldpos_i.Z + min_z; z <= oldpos_i.Z + max_z; z++)
+	for(s16 x = oldpos_i.X + min_x; x <= oldpos_i.X + max_x; x++)
 	{
 		try{
 			// Object collides into walkable nodes

src/content_cao.cpp

@@ -899,8 +899,8 @@ void MobV2CAO::addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc)
 	
 	/*infostream<<"MobV2CAO::addToScene using texture_name="<<
 			m_texture_name<<std::endl;*/
-	std::string texture_string = "[makealpha2:128,0,0;128,128,0:";
+	std::string texture_string = m_texture_name +
-	texture_string += m_texture_name;
+			"^[makealpha:128,0,0^[makealpha:128,128,0";
 	
 	scene::MyBillboardSceneNode *bill = new scene::MyBillboardSceneNode(
 			smgr->getRootSceneNode(), smgr, -1, v3f(0,0,0), v2f(1,1));
@@ -1281,8 +1281,81 @@ private:
 	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:
+	CLuaEntityCAO(IGameDef *gamedef):
+		LuaEntityCAO(gamedef),
+		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)
+	{
+		ClientActiveObject::registerType(getType(), create);
+	}
+
+	void initialize(const std::string &data)
+	{
+		infostream<<"CLuaEntityCAO: 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();
+	}
+
+	~CLuaEntityCAO()
+	{
+		delete m_prop;
+	}
+
+	static ClientActiveObject* create(IGameDef *gamedef)
+	{
+		return new CLuaEntityCAO(gamedef);
+	}
+
 	u8 getType() const
 	{
 		return ACTIVEOBJECT_TYPE_LUAENTITY;
@@ -1296,30 +1369,6 @@ public:
 		return pos_translator.vect_show;
 	}
 		
-	CLuaEntityCAO(IGameDef *gamedef):
-		LuaEntityCAO(gamedef),
-		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)
-	{
-		ClientActiveObject::registerType(getType(), create);
-	}
-
-	~CLuaEntityCAO()
-	{
-		delete m_prop;
-	}
-
-	static ClientActiveObject* create(IGameDef *gamedef)
-	{
-		return new CLuaEntityCAO(gamedef);
-	}
-
 	void addToScene(scene::ISceneManager *smgr, ITextureSource *tsrc)
 	{
 		if(m_meshnode != NULL || m_spritenode != NULL)
@@ -1327,7 +1376,7 @@ public:
 		
 		//video::IVideoDriver* driver = smgr->getVideoDriver();
 
-		if(m_prop->visual == "single_sprite"){
+		if(m_prop->visual == "sprite"){
 			infostream<<"CLuaEntityCAO::addToScene(): single_sprite"<<std::endl;
 			m_spritenode = new scene::MyBillboardSceneNode(
 					smgr->getRootSceneNode(), smgr, -1, v3f(0,0,0), v2f(1,1));
@@ -1339,7 +1388,7 @@ public:
 			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(v2f(1,1)*1.0*BS);
+			m_spritenode->setSize(m_prop->visual_size*BS);
 			{
 				const float txs = 1.0 / 1;
 				const float tys = 1.0 / 1;
@@ -1387,6 +1436,9 @@ public:
 			
 			for(u32 i=0; i<24; ++i){
 				vertices[i].Pos *= BS;
+				vertices[i].Pos.Y *= m_prop->visual_size.Y;
+				vertices[i].Pos.X *= m_prop->visual_size.X;
+				vertices[i].Pos.Z *= m_prop->visual_size.X;
 			}
 
 			u16 indices[6] = {0,1,2,2,3,0};
@@ -1487,6 +1539,66 @@ public:
 			pos_translator.translate(dtime);
 			updateNodePos();
 		}
+
+		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;
+			m_spritenode->setTCoords(0, v2f(txs*(1+col), tys*(1+row)));
+			m_spritenode->setTCoords(1, v2f(txs*(1+col), tys*(0+row)));
+			m_spritenode->setTCoords(2, v2f(txs*(0+col), tys*(0+row)));
+			m_spritenode->setTCoords(3, v2f(txs*(0+col), tys*(1+row)));
+		}
 	}
 
 	void updateTextures(const std::string &mod)
@@ -1562,35 +1674,20 @@ public:
 			std::string mod = deSerializeString(is);
 			updateTextures(mod);
 		}
-	}
+		else if(cmd == 2) // set sprite
-
+		{
-	void initialize(const std::string &data)
+			v2s16 p = readV2S16(is);
-	{
+			int num_frames = readU16(is);
-		infostream<<"CLuaEntityCAO: Got init data"<<std::endl;
+			float framelength = readF1000(is);
-		
+			bool select_horiz_by_yawpitch = readU8(is);
-		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_basepos = p;
-		
+			m_anim_num_frames = num_frames;
-		updateNodePos();
+			m_anim_framelength = framelength;
+			m_tx_select_horiz_by_yawpitch = select_horiz_by_yawpitch;
+
+			updateTexturePos();
+		}
 	}
 };
 

src/content_inventory.cpp

@@ -77,7 +77,7 @@ ServerActiveObject* item_craft_create_object(const std::string &subname,
 	}
 	else if(subname == "testobject1")
 	{
-		ServerActiveObject *obj = new LuaEntitySAO(env, pos, "TNT", "");
+		ServerActiveObject *obj = new LuaEntitySAO(env, pos, "testentity", "");
 		return obj;
 	}
 

src/content_sao.cpp

@@ -1748,6 +1748,11 @@ void LuaEntitySAO::setAcceleration(v3f acceleration)
 	m_acceleration = acceleration;
 }
 
+v3f LuaEntitySAO::getAcceleration()
+{
+	return m_acceleration;
+}
+
 void LuaEntitySAO::setTextureMod(const std::string &mod)
 {
 	std::ostringstream os(std::ios::binary);
@@ -1760,6 +1765,22 @@ void LuaEntitySAO::setTextureMod(const std::string &mod)
 	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, 2);
+	// 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);
+}
+
 void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
 {
 	m_last_sent_move_precision = m_base_position.getDistanceFrom(

src/content_sao.h

@@ -219,7 +219,10 @@ public:
 	/* LuaEntitySAO-specific */
 	void setVelocity(v3f velocity);
 	void setAcceleration(v3f acceleration);
+	v3f getAcceleration();
 	void setTextureMod(const std::string &mod);
+	void setSprite(v2s16 p, int num_frames, float framelength,
+			bool select_horiz_by_yawpitch);
 private:
 	void sendPosition(bool do_interpolate, bool is_movement_end);
 

src/luaentity_common.cpp

@@ -22,12 +22,16 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "utility.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
+#define PP2(x) "("<<(x).X<<","<<(x).Y<<")"
 
 LuaEntityProperties::LuaEntityProperties():
 	physical(false),
 	weight(5),
 	collisionbox(-0.5,-0.5,-0.5, 0.5,0.5,0.5),
-	visual("single_sprite")
+	visual("single_sprite"),
+	visual_size(1,1),
+	spritediv(1,1),
+	initial_sprite_basepos(0,0)
 {
 	textures.push_back("unknown_object.png");
 }
@@ -39,11 +43,14 @@ std::string LuaEntityProperties::dump()
 	os<<", weight="<<weight;
 	os<<", collisionbox="<<PP(collisionbox.MinEdge)<<","<<PP(collisionbox.MaxEdge);
 	os<<", visual="<<visual;
+	os<<", visual_size="<<PP2(visual_size);
 	os<<", textures=[";
 	for(u32 i=0; i<textures.size(); i++){
 		os<<"\""<<textures[i]<<"\" ";
 	}
 	os<<"]";
+	os<<", spritediv="<<PP2(spritediv);
+	os<<", initial_sprite_basepos="<<PP2(initial_sprite_basepos);
 	return os.str();
 }
 
@@ -55,10 +62,13 @@ void LuaEntityProperties::serialize(std::ostream &os)
 	writeV3F1000(os, collisionbox.MinEdge);
 	writeV3F1000(os, collisionbox.MaxEdge);
 	os<<serializeString(visual);
+	writeV2F1000(os, visual_size);
 	writeU16(os, textures.size());
 	for(u32 i=0; i<textures.size(); i++){
 		os<<serializeString(textures[i]);
 	}
+	writeV2S16(os, spritediv);
+	writeV2S16(os, initial_sprite_basepos);
 }
 
 void LuaEntityProperties::deSerialize(std::istream &is)
@@ -71,11 +81,14 @@ void LuaEntityProperties::deSerialize(std::istream &is)
 	collisionbox.MinEdge = readV3F1000(is);
 	collisionbox.MaxEdge = readV3F1000(is);
 	visual = deSerializeString(is);
+	visual_size = readV2F1000(is);
 	textures.clear();
 	u32 texture_count = readU16(is);
 	for(u32 i=0; i<texture_count; i++){
 		textures.push_back(deSerializeString(is));
 	}
+	spritediv = readV2S16(is);
+	initial_sprite_basepos = readV2S16(is);
 }
 
 

src/luaentity_common.h

@@ -31,7 +31,10 @@ struct LuaEntityProperties
 	float weight;
 	core::aabbox3d<f32> collisionbox;
 	std::string visual;
+	v2f visual_size;
 	core::array<std::string> textures;
+	v2s16 spritediv;
+	v2s16 initial_sprite_basepos;
 
 	LuaEntityProperties();
 	std::string dump();

src/scriptapi.cpp

@@ -142,6 +142,18 @@ static v3f readFloatPos(lua_State *L, int index)
 	return pos;
 }
 
+static void pushFloatPos(lua_State *L, v3f p)
+{
+	p /= BS;
+	lua_newtable(L);
+	lua_pushnumber(L, p.X);
+	lua_setfield(L, -2, "x");
+	lua_pushnumber(L, p.Y);
+	lua_setfield(L, -2, "y");
+	lua_pushnumber(L, p.Z);
+	lua_setfield(L, -2, "z");
+}
+
 static void pushpos(lua_State *L, v3s16 p)
 {
 	lua_newtable(L);
@@ -239,6 +251,32 @@ static core::aabbox3d<f32> read_aabbox3df32(lua_State *L, int index, f32 scale)
 	return box;
 }
 
+static v2s16 read_v2s16(lua_State *L, int index)
+{
+	v2s16 p;
+	luaL_checktype(L, index, LUA_TTABLE);
+	lua_getfield(L, index, "x");
+	p.X = lua_tonumber(L, -1);
+	lua_pop(L, 1);
+	lua_getfield(L, index, "y");
+	p.Y = lua_tonumber(L, -1);
+	lua_pop(L, 1);
+	return p;
+}
+
+static v2f read_v2f(lua_State *L, int index)
+{
+	v2f p;
+	luaL_checktype(L, index, LUA_TTABLE);
+	lua_getfield(L, index, "x");
+	p.X = lua_tonumber(L, -1);
+	lua_pop(L, 1);
+	lua_getfield(L, index, "y");
+	p.Y = lua_tonumber(L, -1);
+	lua_pop(L, 1);
+	return p;
+}
+
 static bool getstringfield(lua_State *L, int table,
 		const char *fieldname, std::string &result)
 {
@@ -307,6 +345,14 @@ static int getintfield_default(lua_State *L, int table,
 	return result;
 }
 
+/*static float getfloatfield_default(lua_State *L, int table,
+		const char *fieldname, float default_)
+{
+	float result = default_;
+	getfloatfield(L, table, fieldname, result);
+	return result;
+}*/
+
 static bool getboolfield_default(lua_State *L, int table,
 		const char *fieldname, bool default_)
 {
@@ -1235,6 +1281,18 @@ private:
 		return 0;
 	}
 	
+	// getacceleration(self)
+	static int l_getacceleration(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		LuaEntitySAO *co = getluaobject(ref);
+		if(co == NULL) return 0;
+		// Do it
+		v3f v = co->getAcceleration();
+		pushFloatPos(L, v);
+		return 1;
+	}
+	
 	// add_to_inventory(self, itemstring)
 	// returns: true if item was added, false otherwise
 	static int l_add_to_inventory(lua_State *L)
@@ -1272,6 +1330,30 @@ private:
 		return 0;
 	}
 	
+	// setsprite(self, p={x=0,y=0}, num_frames=1, framelength=0.2,
+	//           select_horiz_by_yawpitch=false)
+	static int l_setsprite(lua_State *L)
+	{
+		ObjectRef *ref = checkobject(L, 1);
+		LuaEntitySAO *co = getluaobject(ref);
+		if(co == NULL) return 0;
+		// Do it
+		v2s16 p(0,0);
+		if(!lua_isnil(L, 2))
+			p = read_v2s16(L, 2);
+		int num_frames = 1;
+		if(!lua_isnil(L, 3))
+			num_frames = lua_tonumber(L, 3);
+		float framelength = 0.2;
+		if(!lua_isnil(L, 4))
+			framelength = lua_tonumber(L, 4);
+		bool select_horiz_by_yawpitch = false;
+		if(!lua_isnil(L, 5))
+			select_horiz_by_yawpitch = lua_toboolean(L, 5);
+		co->setSprite(p, num_frames, framelength, select_horiz_by_yawpitch);
+		return 0;
+	}
+	
 public:
 	ObjectRef(ServerActiveObject *object):
 		m_object(object)
@@ -1343,6 +1425,7 @@ const luaL_reg ObjectRef::methods[] = {
 	method(ObjectRef, setacceleration),
 	method(ObjectRef, add_to_inventory),
 	method(ObjectRef, settexturemod),
+	method(ObjectRef, setsprite),
 	{0,0}
 };
 
@@ -1859,25 +1942,24 @@ void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
 	luaentity_get(L, id);
 	//int object = lua_gettop(L);
 
-	lua_getfield(L, -1, "physical");
+	/* Read stuff */
-	if(lua_isboolean(L, -1))
-		prop->physical = lua_toboolean(L, -1);
-	lua_pop(L, 1);
 	
-	lua_getfield(L, -1, "weight");
+	getboolfield(L, -1, "physical", prop->physical);
-	prop->weight = lua_tonumber(L, -1);
+
-	lua_pop(L, 1);
+	getfloatfield(L, -1, "weight", prop->weight);
 
 	lua_getfield(L, -1, "collisionbox");
 	if(lua_istable(L, -1))
 		prop->collisionbox = read_aabbox3df32(L, -1, 1.0);
 	lua_pop(L, 1);
 
-	lua_getfield(L, -1, "visual");
+	getstringfield(L, -1, "visual", prop->visual);
-	if(lua_isstring(L, -1))
-		prop->visual = lua_tostring(L, -1);
-	lua_pop(L, 1);
 	
+	lua_getfield(L, -1, "visual_size");
+	if(lua_istable(L, -1))
+		prop->visual_size = read_v2f(L, -1);
+	lua_pop(L, 1);
+
 	lua_getfield(L, -1, "textures");
 	if(lua_istable(L, -1)){
 		prop->textures.clear();
@@ -1894,7 +1976,16 @@ void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
 		}
 	}
 	lua_pop(L, 1);
+	
+	lua_getfield(L, -1, "spritediv");
+	if(lua_istable(L, -1))
+		prop->spritediv = read_v2s16(L, -1);
+	lua_pop(L, 1);
 
+	lua_getfield(L, -1, "initial_sprite_basepos");
+	if(lua_istable(L, -1))
+		prop->initial_sprite_basepos = read_v2s16(L, -1);
+	lua_pop(L, 1);
 }
 
 void scriptapi_luaentity_step(lua_State *L, u16 id, float dtime)

src/tile.cpp

@@ -1361,14 +1361,14 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
 			}
 		}
 		/*
-			"[makealpha:R,G,B:filename.png"
+			"[makealpha:R,G,B"
-			Use an image with converting one color to transparent.
+			Convert one color to transparent.
 		*/
 		else if(part_of_name.substr(0,11) == "[makealpha:")
 		{
-			if(baseimg != NULL)
+			if(baseimg == NULL)
 			{
-				errorstream<<"generate_image(): baseimg!=NULL "
+				errorstream<<"generate_image(): baseimg==NULL "
 						<<"for part_of_name=\""<<part_of_name
 						<<"\", cancelling."<<std::endl;
 				return false;
@@ -1377,99 +1377,28 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
 			Strfnd sf(part_of_name.substr(11));
 			u32 r1 = stoi(sf.next(","));
 			u32 g1 = stoi(sf.next(","));
-			u32 b1 = stoi(sf.next(":"));
+			u32 b1 = stoi(sf.next(""));
 			std::string filename = sf.next("");
 
-			/*infostream<<"generate_image(): Loading file \""<<filename
+			core::dimension2d<u32> dim = baseimg->getDimension();
-					<<"\""<<std::endl;*/
 			
-			video::IImage *image = sourcecache->getOrLoad(filename, device);
+			/*video::IImage *oldbaseimg = baseimg;
-			
+			baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
-			if(image == NULL)
+			oldbaseimg->copyTo(baseimg);
+			oldbaseimg->drop();*/
+
+			// Set alpha to full
+			for(u32 y=0; y<dim.Height; y++)
+			for(u32 x=0; x<dim.Width; x++)
 			{
-				errorstream<<"generate_image(): Loading file \""
+				video::SColor c = baseimg->getPixel(x,y);
-						<<filename<<"\" failed"<<std::endl;
+				u32 r = c.getRed();
-			}
+				u32 g = c.getGreen();
-			else
+				u32 b = c.getBlue();
-			{
+				if(!(r == r1 && g == g1 && b == b1))
-				core::dimension2d<u32> dim = image->getDimension();
+					continue;
-				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+				c.setAlpha(0);
-				
+				baseimg->setPixel(x,y,c);
-				// Blit
-				image->copyTo(baseimg);
-
-				image->drop();
-
-				for(u32 y=0; y<dim.Height; y++)
-				for(u32 x=0; x<dim.Width; x++)
-				{
-					video::SColor c = baseimg->getPixel(x,y);
-					u32 r = c.getRed();
-					u32 g = c.getGreen();
-					u32 b = c.getBlue();
-					if(!(r == r1 && g == g1 && b == b1))
-						continue;
-					c.setAlpha(0);
-					baseimg->setPixel(x,y,c);
-				}
-			}
-		}
-		/*
-			"[makealpha2:R,G,B;R2,G2,B2:filename.png"
-			Use an image with converting two colors to transparent.
-		*/
-		else if(part_of_name.substr(0,12) == "[makealpha2:")
-		{
-			if(baseimg != NULL)
-			{
-				errorstream<<"generate_image(): baseimg!=NULL "
-						<<"for part_of_name=\""<<part_of_name
-						<<"\", cancelling."<<std::endl;
-				return false;
-			}
-
-			Strfnd sf(part_of_name.substr(12));
-			u32 r1 = stoi(sf.next(","));
-			u32 g1 = stoi(sf.next(","));
-			u32 b1 = stoi(sf.next(";"));
-			u32 r2 = stoi(sf.next(","));
-			u32 g2 = stoi(sf.next(","));
-			u32 b2 = stoi(sf.next(":"));
-			std::string filename = sf.next("");
-
-			/*infostream<<"generate_image(): Loading filename \""<<filename
-					<<"\""<<std::endl;*/
-			
-			video::IImage *image = sourcecache->getOrLoad(filename, device);
-			
-			if(image == NULL)
-			{
-				errorstream<<"generate_image(): Loading file \""
-						<<filename<<"\" failed"<<std::endl;
-			}
-			else
-			{
-				core::dimension2d<u32> dim = image->getDimension();
-				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
-
-				// Blit
-				image->copyTo(baseimg);
-
-				image->drop();
-				
-				for(u32 y=0; y<dim.Height; y++)
-				for(u32 x=0; x<dim.Width; x++)
-				{
-					video::SColor c = baseimg->getPixel(x,y);
-					u32 r = c.getRed();
-					u32 g = c.getGreen();
-					u32 b = c.getBlue();
-					if(!(r == r1 && g == g1 && b == b1) &&
-					   !(r == r2 && g == g2 && b == b2))
-						continue;
-					c.setAlpha(0);
-					baseimg->setPixel(x,y,c);
-				}
 			}
 		}
 		/*

src/utility.h

@@ -148,6 +148,19 @@ inline v3f readV3F1000(u8 *data)
 	return p;
 }
 
+inline void writeV2F1000(u8 *data, v2f p)
+{
+	writeF1000(&data[0], p.X);
+	writeF1000(&data[4], p.Y);
+}
+inline v2f readV2F1000(u8 *data)
+{
+	v2f p;
+	p.X = (float)readF1000(&data[0]);
+	p.Y = (float)readF1000(&data[4]);
+	return p;
+}
+
 inline void writeV2S16(u8 *data, v2s16 p)
 {
 	writeS16(&data[0], p.X);
@@ -274,6 +287,45 @@ inline v3f readV3F1000(std::istream &is)
 	return readV3F1000((u8*)buf);
 }
 
+inline void writeV2F1000(std::ostream &os, v2f p)
+{
+	char buf[8];
+	writeV2F1000((u8*)buf, p);
+	os.write(buf, 8);
+}
+inline v2f readV2F1000(std::istream &is)
+{
+	char buf[8];
+	is.read(buf, 8);
+	return readV2F1000((u8*)buf);
+}
+
+inline void writeV2S16(std::ostream &os, v2s16 p)
+{
+	char buf[4];
+	writeV2S16((u8*)buf, p);
+	os.write(buf, 4);
+}
+inline v2s16 readV2S16(std::istream &is)
+{
+	char buf[4];
+	is.read(buf, 4);
+	return readV2S16((u8*)buf);
+}
+
+inline void writeV3S16(std::ostream &os, v3s16 p)
+{
+	char buf[6];
+	writeV3S16((u8*)buf, p);
+	os.write(buf, 6);
+}
+inline v3s16 readV3S16(std::istream &is)
+{
+	char buf[6];
+	is.read(buf, 6);
+	return readV3S16((u8*)buf);
+}
+
 /*
 	None of these are used at the moment
 */