work-in-progress texture atlas optimization

src/CMakeLists.txt

@@ -75,6 +75,7 @@ set(minetest_SRCS
 	guiPauseMenu.cpp
 	irrlichtwrapper.cpp
 	client.cpp
+	tile.cpp
 	main.cpp
 )
 

src/environment.cpp

@@ -118,9 +118,9 @@ void Environment::step(float dtime)
 				/*
 					Apply water resistance
 				*/
-				if(player->in_water_stable)
+				if(player->in_water_stable || player->in_water)
 				{
-					f32 max_down = 1.5*BS;
+					f32 max_down = 2.0*BS;
 					if(speed.Y < -max_down) speed.Y = -max_down;
 
 					f32 max = 2.5*BS;

src/iirrlichtwrapper.h

@@ -21,6 +21,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define IIRRLICHTWRAPPER_HEADER
 
 #include "common_irrlicht.h"
+#include "texture.h"
+
+/*
+	NOTE: This is deprecated and should be removed completely
+*/
 
 /*
 	IrrlichtWrapper prototype.
@@ -38,15 +43,18 @@ public:
 	{
 	}
 	
+	// Should be called only from the main thread
+	virtual IrrlichtDevice* getDevice(){ return NULL; }
+	
 	virtual u32 getTime()
 	{
 		return 0;
 	}
 	
-	virtual textureid_t getTextureId(const std::string &name){ return 0; }
+	/*virtual textureid_t getTextureId(const std::string &name){ return 0; }
 	virtual std::string getTextureName(textureid_t id){ return ""; }
 	virtual video::ITexture* getTexture(const std::string &name){ return NULL; }
-	virtual video::ITexture* getTexture(const TextureSpec &spec){ return NULL; }
+	virtual video::ITexture* getTexture(const TextureSpec &spec){ return NULL; }*/
 	
 private:
 };

src/inventory.cpp

@@ -96,13 +96,17 @@ InventoryItem* InventoryItem::deSerialize(std::istream &is)
 #ifndef SERVER
 video::ITexture * MapBlockObjectItem::getImage()
 {
+	//TODO
+	
 	if(m_inventorystring.substr(0,3) == "Rat")
 		//return g_device->getVideoDriver()->getTexture(porting::getDataPath("rat.png").c_str());
-		return g_irrlicht->getTexture("rat.png");
+		//return g_irrlicht->getTexture("rat.png");
+		return NULL;
 	
 	if(m_inventorystring.substr(0,4) == "Sign")
 		//return g_device->getVideoDriver()->getTexture(porting::getDataPath("sign.png").c_str());
-		return g_irrlicht->getTexture("sign.png");
+		//return g_irrlicht->getTexture("sign.png");
+		return NULL;
 
 	return NULL;
 }

src/inventory.h

@@ -122,12 +122,9 @@ public:
 #ifndef SERVER
 	video::ITexture * getImage()
 	{
-		/*if(m_content >= USEFUL_CONTENT_COUNT)
+		//TODO
+		//return g_irrlicht->getTexture(content_features(m_content).inventory_texture);
 		return NULL;
-			
-		return g_irrlicht->getTexture(g_content_inventory_texture_paths[m_content]);*/
-
-		return g_irrlicht->getTexture(content_features(m_content).inventory_texture);
 	}
 #endif
 	std::string getText()
@@ -264,7 +261,9 @@ public:
 			name = "cloud.png";
 		
 		// Get such a texture
-		return g_irrlicht->getTexture(name);
+		//return g_irrlicht->getTexture(name);
+		//TODO
+		return NULL;
 	}
 #endif
 	std::string getText()
@@ -351,10 +350,12 @@ public:
 		std::ostringstream os;
 		os<<"[progressbar"<<value_f;
 
-		TextureSpec spec;
+		/*TextureSpec spec;
 		spec.addTid(g_irrlicht->getTextureId(basename));
 		spec.addTid(g_irrlicht->getTextureId(os.str()));
-		return g_irrlicht->getTexture(spec);
+		return g_irrlicht->getTexture(spec);*/
+		//TODO
+		return NULL;
 
 		/*// Make texture name for the new texture with a progress bar
 		float value_f = (float)toolprogress / (float)maxprogress;

src/irrlichtwrapper.cpp

@@ -11,8 +11,22 @@ IrrlichtWrapper::IrrlichtWrapper(IrrlichtDevice *device)
 	m_device = device;
 }
 
+IrrlichtWrapper::~IrrlichtWrapper()
+{
+#if 0
+	// Clear image cache
+	for(core::map<std::string, video::IImage*>::Iterator
+			i = m_imagecache.getIterator();
+			i.atEnd() == false; i++)
+	{
+		i.getNode()->getValue()->drop();
+	}
+#endif
+}
+
 void IrrlichtWrapper::Run()
 {
+#if 0
 	/*
 		Fetch textures
 	*/
@@ -34,6 +48,7 @@ void IrrlichtWrapper::Run()
 
 		request.dest->push_back(result);
 	}
+#endif
 }
 
 void IrrlichtWrapper::Shutdown(bool shutdown)
@@ -41,6 +56,18 @@ void IrrlichtWrapper::Shutdown(bool shutdown)
 	m_running = !shutdown;
 }
 
+IrrlichtDevice* IrrlichtWrapper::getDevice()
+{
+	if(get_current_thread_id() != m_main_thread)
+	{
+		dstream<<"WARNING: IrrlichtWrapper::getDevice() called "
+				"not from main thread"<<std::endl;
+		return NULL;
+	}
+	return m_device;
+}
+
+#if 0
 textureid_t IrrlichtWrapper::getTextureId(const std::string &name)
 {
 	u32 id = m_namecache.getId(name);
@@ -55,9 +82,9 @@ std::string IrrlichtWrapper::getTextureName(textureid_t id)
 	return name;
 }
 
-video::ITexture* IrrlichtWrapper::getTexture(const std::string &name)
+video::ITexture* IrrlichtWrapper::getTexture(const std::string &filename)
 {
-	TextureSpec spec(getTextureId(name));
+	TextureSpec spec(getTextureId(filename));
 	return getTexture(spec);
 }
 
@@ -163,11 +190,35 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 		texture_name += name;
 		texture_name += "]";
 		
+		/*
+			Try to get image from image cache
+		*/
+		{
+			core::map<std::string, video::IImage*>::Node *n;
+			n = m_imagecache.find(texture_name);
+			if(n != NULL)
+			{
+				video::IImage *image = n->getValue();
+
+				core::dimension2d<u32> dim = image->getDimension();
+				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+				image->copyTo(baseimg);
+
+				dstream<<"INFO: getTextureDirect(): Loaded \""
+						<<texture_name<<"\" from image cache"
+						<<std::endl;
+				
+				// Do not process any further.
+				continue;
+			}
+		}
+
+		// Stuff starting with [ are special commands
 		if(name[0] != '[')
 		{
 			// A normal texture; load it from a file
 			std::string path = porting::getDataPath(name.c_str());
-			dstream<<"getTextureDirect(): Loading path \""<<path
+			dstream<<"INFO: getTextureDirect(): Loading path \""<<path
 					<<"\""<<std::endl;
 			
 			// DEBUG
@@ -192,7 +243,7 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 			// If base image is NULL, load as base.
 			if(baseimg == NULL)
 			{
-				dstream<<"Setting "<<name<<" as base"<<std::endl;
+				dstream<<"INFO: Setting "<<name<<" as base"<<std::endl;
 				/*
 					Copy it this way to get an alpha channel.
 					Otherwise images with alpha cannot be blitted on 
@@ -209,7 +260,7 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 			// Else blit on base.
 			else
 			{
-				dstream<<"Blitting "<<name<<" on base"<<std::endl;
+				dstream<<"INFO: Blitting "<<name<<" on base"<<std::endl;
 				// Size of the copied area
 				core::dimension2d<u32> dim = image->getDimension();
 				//core::dimension2d<u32> dim(16,16);
@@ -229,28 +280,86 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 		else
 		{
 			// A special texture modification
-			dstream<<"getTextureDirect(): generating \""<<name<<"\""
+			dstream<<"INFO: getTextureDirect(): generating \""<<name<<"\""
 					<<std::endl;
 			if(name.substr(0,6) == "[crack")
 			{
 				u16 progression = stoi(name.substr(6));
 				// Size of the base image
-				core::dimension2d<u32> dim(16, 16);
+				core::dimension2d<u32> dim_base = baseimg->getDimension();
+				// Crack will be drawn at this size
+				u32 cracksize = 16;
 				// Size of the crack image
-				//core::dimension2d<u32> dim_crack(16, 16 * CRACK_ANIMATION_LENGTH);
+				core::dimension2d<u32> dim_crack(cracksize,cracksize);
-				// Position to copy the crack to in the base image
-				core::position2d<s32> pos_base(0, 0);
 				// Position to copy the crack from in the crack image
 				core::position2d<s32> pos_other(0, 16 * progression);
 
 				video::IImage *crackimage = driver->createImageFromFile(
 						porting::getDataPath("crack.png").c_str());
-				crackimage->copyToWithAlpha(baseimg, v2s32(0,0),
+			
-						core::rect<s32>(pos_other, dim),
+				if(crackimage)
+				{
+					/*crackimage->copyToWithAlpha(baseimg, v2s32(0,0),
+							core::rect<s32>(pos_other, dim_base),
+							video::SColor(255,255,255,255),
+							NULL);*/
+
+					for(u32 y0=0; y0<dim_base.Height/dim_crack.Height; y0++)
+					for(u32 x0=0; x0<dim_base.Width/dim_crack.Width; x0++)
+					{
+						// Position to copy the crack to in the base image
+						core::position2d<s32> pos_base(x0*cracksize, y0*cracksize);
+						crackimage->copyToWithAlpha(baseimg, pos_base,
+								core::rect<s32>(pos_other, dim_crack),
 								video::SColor(255,255,255,255),
 								NULL);
+					}
+
 					crackimage->drop();
 				}
+			}
+			else if(name.substr(0,8) == "[combine")
+			{
+				// "[combine:16x128:0,0=stone.png:0,16=grass.png"
+				Strfnd sf(name);
+				sf.next(":");
+				u32 w0 = stoi(sf.next("x"));
+				u32 h0 = stoi(sf.next(":"));
+				dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
+				core::dimension2d<u32> dim(w0,h0);
+				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+				while(sf.atend() == false)
+				{
+					u32 x = stoi(sf.next(","));
+					u32 y = stoi(sf.next("="));
+					std::string filename = sf.next(":");
+					dstream<<"INFO: Adding \""<<filename
+							<<"\" to combined ("<<x<<","<<y<<")"
+							<<std::endl;
+					video::IImage *img = driver->createImageFromFile(
+							porting::getDataPath(filename.c_str()).c_str());
+					if(img)
+					{
+						core::dimension2d<u32> dim = img->getDimension();
+						dstream<<"INFO: Size "<<dim.Width
+								<<"x"<<dim.Height<<std::endl;
+						core::position2d<s32> pos_base(x, y);
+						video::IImage *img2 =
+								driver->createImage(video::ECF_A8R8G8B8, dim);
+						img->copyTo(img2);
+						img->drop();
+						img2->copyToWithAlpha(baseimg, pos_base,
+								core::rect<s32>(v2s32(0,0), dim),
+								video::SColor(255,255,255,255),
+								NULL);
+						img2->drop();
+					}
+					else
+					{
+						dstream<<"WARNING: img==NULL"<<std::endl;
+					}
+				}
+			}
 			else if(name.substr(0,12) == "[progressbar")
 			{
 				float value = stof(name.substr(12));
@@ -262,12 +371,31 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 						" texture: \""<<name<<"\""<<std::endl;
 			}
 		}
+		
+		/*
+			Add to image cache
+		*/
+		if(baseimg != NULL)
+		{
+			core::map<std::string, video::IImage*>::Node *n;
+			n = m_imagecache.find(texture_name);
+			if(n != NULL)
+			{
+				video::IImage *img = n->getValue();
+				if(img != baseimg)
+				{
+					img->drop();
+				}
+			}
+			
+			m_imagecache[texture_name] = baseimg;
+		}
 	}
 
 	// If no resulting image, return NULL
 	if(baseimg == NULL)
 	{
-		dstream<<"getTextureDirect(): baseimg is NULL (attempted to"
+		dstream<<"WARNING: getTextureDirect(): baseimg is NULL (attempted to"
 				" create texture \""<<texture_name<<"\""<<std::endl;
 		return NULL;
 	}
@@ -281,9 +409,8 @@ video::ITexture* IrrlichtWrapper::getTextureDirect(const TextureSpec &spec)
 
 	// Create texture from resulting image
 	t = driver->addTexture(texture_name.c_str(), baseimg);
-	baseimg->drop();
 
-	dstream<<"getTextureDirect(): created texture \""<<texture_name
+	dstream<<"INFO: getTextureDirect(): created texture \""<<texture_name
 			<<"\""<<std::endl;
 
 	return t;
@@ -321,5 +448,5 @@ void make_progressbar(float value, video::IImage *image)
 		}
 	}
 }
-
+#endif
 

src/irrlichtwrapper.h

@@ -31,6 +31,10 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <jmutexautolock.h>
 #include <string>
 
+/*
+	NOTE: This is deprecated and should be removed completely
+*/
+
 /*
 	A thread-safe texture pointer cache.
 	
@@ -38,45 +42,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	threads, because texture pointers have to be handled in
 	background threads.
 */
+
 #if 0
-class TextureCache
-{
-public:
-	TextureCache()
-	{
-		m_mutex.Init();
-		assert(m_mutex.IsInitialized());
-	}
-	
-	void set(std::string name, video::ITexture *texture)
-	{
-		if(texture == NULL)
-			return;
-		
-		JMutexAutoLock lock(m_mutex);
-
-		m_textures[name] = texture;
-	}
-	
-	video::ITexture* get(const std::string &name)
-	{
-		JMutexAutoLock lock(m_mutex);
-
-		core::map<std::string, video::ITexture*>::Node *n;
-		n = m_textures.find(name);
-
-		if(n != NULL)
-			return n->getValue();
-
-		return NULL;
-	}
-
-private:
-	core::map<std::string, video::ITexture*> m_textures;
-	JMutex m_mutex;
-};
-#endif
-
 /*
 	A thread-safe texture pointer cache
 */
@@ -116,6 +83,7 @@ private:
 	core::map<TextureSpec, video::ITexture*> m_textures;
 	JMutex m_mutex;
 };
+#endif
 
 /*
 	A thread-safe wrapper for irrlicht, to be accessed from
@@ -124,6 +92,8 @@ private:
 	Queues tasks to be done in the main thread.
 
 	Also caches texture specification strings to ids and textures.
+
+	TODO: Remove this and move all texture functionality to TextureSource
 */
 
 class IrrlichtWrapper : public IIrrlichtWrapper
@@ -135,12 +105,16 @@ public:
 
 	IrrlichtWrapper(IrrlichtDevice *device);
 
+	~IrrlichtWrapper();
+	
 	// Run queued tasks
 	void Run();
 
 	// Shutdown wrapper; this disables queued texture fetching
 	void Shutdown(bool shutdown);
 
+	IrrlichtDevice* getDevice();
+	
 	/*
 		These are called from other threads
 	*/
@@ -152,6 +126,7 @@ public:
 		return m_device->getTimer()->getRealTime();
 	}
 
+#if 0
 	/*
 		Format of a texture name:
 			"stone.png" (filename in image data directory)
@@ -167,20 +142,18 @@ public:
 	// The reverse of the above
 	std::string getTextureName(textureid_t id);
 	// Gets a texture based on a filename
-	video::ITexture* getTexture(const std::string &name);
+	video::ITexture* getTexture(const std::string &filename);
 	// Gets a texture based on a TextureSpec (a textureid_t is fine too)
 	video::ITexture* getTexture(const TextureSpec &spec);
+#endif
 	
 private:
 	/*
 		Non-thread-safe variants of stuff, for internal use
 	*/
 
-	// DEPRECATED NO-OP
-	//video::ITexture* getTextureDirect(const std::string &spec);
-	
 	// Constructs a texture according to spec
-	video::ITexture* getTextureDirect(const TextureSpec &spec);
+	//video::ITexture* getTextureDirect(const TextureSpec &spec);
 	
 	/*
 		Members
@@ -195,14 +168,19 @@ private:
 	JMutex m_device_mutex;
 	IrrlichtDevice *m_device;
 	
+#if 0
 	// Queued texture fetches (to be processed by the main thread)
 	RequestQueue<TextureSpec, video::ITexture*, u8, u8> m_get_texture_queue;
 
 	// Cache of textures by spec
 	TextureCache m_texturecache;
 
+	// Cached or generated source images by texture name
+	core::map<std::string, video::IImage*> m_imagecache;
+
 	// A mapping from texture id to string spec
 	MutexedIdGenerator<std::string> m_namecache;
+#endif
 };
 
 #endif

src/main.cpp

@@ -97,6 +97,9 @@ SUGG: Meshes of blocks could be split into 6 meshes facing into
       different directions and then only those drawn that need to be
 	  - Also an 1-dimensional tile map would be nice probably
 
+SUGG: Calculate lighting per vertex to get a lighting effect like in
+      bartwe's game
+
 Gaming ideas:
 -------------
 
@@ -363,8 +366,13 @@ Doing now (most important at the top):
 #include "guiMainMenu.h"
 #include "mineral.h"
 #include "noise.h"
+#include "tile.h"
 
-IrrlichtWrapper *g_irrlicht;
+// TODO: Remove this
+IrrlichtWrapper *g_irrlicht = NULL;
+
+// This makes textures
+TextureSource *g_texturesource = NULL;
 
 MapDrawControl draw_control;
 
@@ -1643,6 +1651,7 @@ int main(int argc, char *argv[])
 	
 	g_device = device;
 	g_irrlicht = new IrrlichtWrapper(device);
+	g_texturesource = new TextureSource(device);
 
 	/*
 		Speed tests (done after irrlicht is loaded to get timer)
@@ -1670,7 +1679,8 @@ int main(int argc, char *argv[])
 	video::IVideoDriver* driver = device->getVideoDriver();
 
 	/*
-		This changes the minimum allowed number of vertices in a VBO
+		This changes the minimum allowed number of vertices in a VBO.
+		Default is 500.
 	*/
 	//driver->setMinHardwareBufferVertexCount(50);
 
@@ -2061,6 +2071,11 @@ int main(int argc, char *argv[])
 		*/
 		g_irrlicht->Run();
 
+		/*
+			Process TextureSource's queue
+		*/
+		g_texturesource->processQueue();
+
 		/*
 			Random calculations
 		*/

src/main.h

@@ -20,15 +20,20 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef MAIN_HEADER
 #define MAIN_HEADER
 
-#include "irrlichtwrapper.h"
-
 // Settings
+#include "utility.h"
 extern Settings g_settings;
 
 // A thread safe wrapper to irrlicht
 // On a server build, this is always NULL.
+// TODO: Remove this
+#include "irrlichtwrapper.h"
 extern IrrlichtWrapper *g_irrlicht;
 
+// This makes and maps textures
+#include "tile.h"
+extern TextureSource *g_texturesource;
+
 // Debug streams
 
 #include <fstream>

src/map.cpp

@@ -1974,7 +1974,7 @@ double tree_amount_2d(u64 seed, v2s16 p)
 {
 	double noise = noise2d_perlin(
 			0.5+(float)p.X/250, 0.5+(float)p.Y/250,
-			seed+2, 5, 0.6);
+			seed+2, 5, 0.66);
 	double zeroval = -0.3;
 	if(noise < zeroval)
 		return 0;
@@ -2021,9 +2021,9 @@ double base_rock_level_2d(u64 seed, v2s16 p)
 		base = base2;*/
 #if 1
 	// Higher ground level
-	double higher = (double)WATER_LEVEL + 13. + 50. * noise2d_perlin(
+	double higher = (double)WATER_LEVEL + 25. + 45. * noise2d_perlin(
-			0.5+(float)p.X/500., 0.5+(float)p.Y/500.,
+			0.5+(float)p.X/250., 0.5+(float)p.Y/250.,
-			seed+85039, 6, 0.69);
+			seed+85039, 5, 0.69);
 	//higher = 30; // For debugging
 
 	// Limit higher to at least base
@@ -2042,7 +2042,7 @@ double base_rock_level_2d(u64 seed, v2s16 p)
 	//double b = 20;
 
 	// Offset to more low
-	double a_off = -0.3;
+	double a_off = -0.15;
 	// High/low selector
 	/*double a = 0.5 + b * (a_off + noise2d_perlin(
 			0.5+(float)p.X/500., 0.5+(float)p.Y/500.,
@@ -2414,12 +2414,12 @@ MapChunk* ServerMap::generateChunkRaw(v2s16 chunkpos,
 	/*
 		Make dungeons
 	*/
-	//u32 dungeons_count = relative_volume / 600000;
+	u32 dungeons_count = relative_volume / 600000;
-	/*u32 bruises_count = relative_volume * stone_surface_max_y / 40000000;
+	u32 bruises_count = relative_volume * stone_surface_max_y / 40000000;
 	if(stone_surface_max_y < WATER_LEVEL)
-		bruises_count = 0;*/
+		bruises_count = 0;
-	u32 dungeons_count = 0;
+	/*u32 dungeons_count = 0;
-	u32 bruises_count = 0;
+	u32 bruises_count = 0;*/
 	for(u32 jj=0; jj<dungeons_count+bruises_count; jj++)
 	{
 		s16 min_tunnel_diameter = 2;
@@ -5116,6 +5116,7 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 			timecheck_counter++;
 			if(timecheck_counter > 50)
 			{
+				timecheck_counter = 0;
 				int time2 = time(0);
 				if(time2 > time1 + 4)
 				{
@@ -5167,71 +5168,6 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 				continue;
 			}
 
-#if 0			
-			v3s16 blockpos_nodes = block->getPosRelative();
-			
-			// Block center position
-			v3f blockpos(
-					((float)blockpos_nodes.X + MAP_BLOCKSIZE/2) * BS,
-					((float)blockpos_nodes.Y + MAP_BLOCKSIZE/2) * BS,
-					((float)blockpos_nodes.Z + MAP_BLOCKSIZE/2) * BS
-			);
-
-			// Block position relative to camera
-			v3f blockpos_relative = blockpos - camera_position;
-
-			// Distance in camera direction (+=front, -=back)
-			f32 dforward = blockpos_relative.dotProduct(camera_direction);
-
-			// Total distance
-			f32 d = blockpos_relative.getLength();
-			
-			if(m_control.range_all == false)
-			{
-				// If block is far away, don't draw it
-				if(d > m_control.wanted_range * BS)
-					continue;
-			}
-			
-			// Maximum radius of a block
-			f32 block_max_radius = 0.5*1.44*1.44*MAP_BLOCKSIZE*BS;
-			
-			// If block is (nearly) touching the camera, don't
-			// bother validating further (that is, render it anyway)
-			if(d > block_max_radius * 1.5)
-			{
-				// Cosine of the angle between the camera direction
-				// and the block direction (camera_direction is an unit vector)
-				f32 cosangle = dforward / d;
-				
-				// Compensate for the size of the block
-				// (as the block has to be shown even if it's a bit off FOV)
-				// This is an estimate.
-				cosangle += block_max_radius / dforward;
-
-				// If block is not in the field of view, skip it
-				//if(cosangle < cos(FOV_ANGLE/2))
-				if(cosangle < cos(FOV_ANGLE/2. * 4./3.))
-					continue;
-			}
-#endif			
-#if 0
-			v3s16 blockpos_nodes = block->getPosRelative();
-			
-			// Block center position
-			v3f blockpos(
-					((float)blockpos_nodes.X + MAP_BLOCKSIZE/2) * BS,
-					((float)blockpos_nodes.Y + MAP_BLOCKSIZE/2) * BS,
-					((float)blockpos_nodes.Z + MAP_BLOCKSIZE/2) * BS
-			);
-
-			// Block position relative to camera
-			v3f blockpos_relative = blockpos - camera_position;
-
-			// Total distance
-			f32 d = blockpos_relative.getLength();
-#endif
-			
 #if 1
 			/*
 				Update expired mesh
@@ -5324,6 +5260,11 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 					// Render transparent on transparent pass and likewise.
 					if(transparent == is_transparent_pass)
 					{
+						/*
+							This *shouldn't* hurt too much because Irrlicht
+							doesn't change opengl textures if the old
+							material is set again.
+						*/
 						driver->setMaterial(buf->getMaterial());
 						driver->drawMeshBuffer(buf);
 						vertex_count += buf->getVertexCount();

src/map.h

@@ -513,6 +513,8 @@ public:
 	// For debug printing
 	virtual void PrintInfo(std::ostream &out);
 
+	bool isSavingEnabled(){ return m_map_saving_enabled; }
+
 private:
 	// Seed used for all kinds of randomness
 	u64 m_seed;

src/mapblock.cpp

@@ -273,13 +273,32 @@ void MapBlock::makeFastFace(TileSpec tile, u8 light, v3f p,
 	video::SColor c = video::SColor(alpha,li,li,li);
 
 	face.vertices[0] = video::S3DVertex(vertex_pos[0], zerovector, c,
-			core::vector2d<f32>(0,1));
-	face.vertices[1] = video::S3DVertex(vertex_pos[1], zerovector, c,
 			core::vector2d<f32>(abs_scale,1));
+	face.vertices[1] = video::S3DVertex(vertex_pos[1], zerovector, c,
+			core::vector2d<f32>(0,1));
 	face.vertices[2] = video::S3DVertex(vertex_pos[2], zerovector, c,
-			core::vector2d<f32>(abs_scale,0));
-	face.vertices[3] = video::S3DVertex(vertex_pos[3], zerovector, c,
 			core::vector2d<f32>(0,0));
+	face.vertices[3] = video::S3DVertex(vertex_pos[3], zerovector, c,
+			core::vector2d<f32>(abs_scale,0));
+	
+	/*float x0 = (float)tile.tx/256.0;
+	float y0 = (float)tile.ty/256.0;
+	float w = ((float)tile.tw + 1.0)/256.0;
+	float h = ((float)tile.th + 1.0)/256.0;*/
+
+	float x0 = tile.texture.pos.X;
+	float y0 = tile.texture.pos.Y;
+	float w = tile.texture.size.X;
+	float h = tile.texture.size.Y;
+
+	face.vertices[0] = video::S3DVertex(vertex_pos[0], zerovector, c,
+			core::vector2d<f32>(x0+w*abs_scale, y0+h));
+	face.vertices[1] = video::S3DVertex(vertex_pos[1], zerovector, c,
+			core::vector2d<f32>(x0, y0+h));
+	face.vertices[2] = video::S3DVertex(vertex_pos[2], zerovector, c,
+			core::vector2d<f32>(x0, y0));
+	face.vertices[3] = video::S3DVertex(vertex_pos[3], zerovector, c,
+			core::vector2d<f32>(x0+w*abs_scale, y0));
 
 	face.tile = tile;
 	//DEBUG
@@ -318,11 +337,26 @@ TileSpec MapBlock::getNodeTile(MapNode mn, v3s16 p, v3s16 face_dir,
 		}
 		if(mod.type == NODEMOD_CRACK)
 		{
+			/*
+				Get texture id, translate it to name, append stuff to
+				name, get texture id
+			*/
+			// Get original texture name
+			u32 orig_id = spec.texture.id;
+			std::string orig_name = g_texturesource->getTextureName(orig_id);
+			// Create new texture name
 			std::ostringstream os;
-			os<<"[crack"<<mod.param;
+			os<<orig_name<<"^[crack"<<mod.param;
+			//os<<orig_name<<"^[progressbar0.5";
+			//os<<"mese.png";
+			// Get new texture
+			u32 new_id = g_texturesource->getTextureId(os.str());
 			
-			textureid_t tid = g_irrlicht->getTextureId(os.str());
+			dstream<<"MapBlock::getNodeTile(): Switching from "
-			spec.spec.addTid(tid);
+					<<orig_name<<" to "<<os.str()<<" ("
+					<<orig_id<<" to "<<new_id<<")"<<std::endl;
+			
+			spec.texture = g_texturesource->getTexture(new_id);
 		}
 	}
 	
@@ -407,6 +441,8 @@ void MapBlock::updateFastFaceRow(
 		TileSpec tile1_next;
 		u8 light_next = 0;
 		
+		// If at last position, there is nothing to compare to and
+		// the face must be drawn anyway
 		if(j != length - 1)
 		{
 			p_next = p + translate_dir;
@@ -426,7 +462,31 @@ void MapBlock::updateFastFaceRow(
 
 		continuous_tiles_count++;
 		
-		if(next_is_different)
+		// This is set to true if the texture doesn't allow more tiling
+		bool end_of_texture = false;
+		/*
+			If there is no texture, it can be tiled infinitely.
+			If tiled==0, it means the texture can be tiled infinitely.
+			Otherwise check tiled agains continuous_tiles_count.
+
+			This check has to be made for both tiles, because this is
+			a bit hackish and we know which one we're using only when
+			the decision to make the faces is made.
+		*/
+		if(tile0.texture.atlas != NULL && tile0.texture.tiled != 0)
+		{
+			if(tile0.texture.tiled <= continuous_tiles_count)
+				end_of_texture = true;
+		}
+		if(tile1.texture.atlas != NULL && tile1.texture.tiled != 0)
+		{
+			if(tile1.texture.tiled <= continuous_tiles_count)
+				end_of_texture = true;
+		}
+		
+		//end_of_texture = true; //DEBUG
+		
+		if(next_is_different || end_of_texture)
 		{
 			/*
 				Create a face if there should be one
@@ -684,10 +744,6 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 		Convert FastFaces to SMesh
 	*/
 
-	scene::SMesh *mesh_new = NULL;
-	
-	mesh_new = new scene::SMesh();
-	
 	MeshCollector collector;
 
 	if(fastfaces_new.size() > 0)
@@ -709,7 +765,8 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 
 			const u16 indices[] = {0,1,2,2,3,0};
 			
-			video::ITexture *texture = g_irrlicht->getTexture(f.tile.spec);
+			//video::ITexture *texture = g_irrlicht->getTexture(f.tile.spec);
+			video::ITexture *texture = f.tile.texture.atlas;
 			if(texture == NULL)
 				continue;
 
@@ -717,11 +774,6 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			
 			f.tile.applyMaterialOptions(material);
 			
-			/*if(f.tile.alpha != 255)
-				material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
-			else
-				material.MaterialType = video::EMT_SOLID;*/
-			
 			collector.append(material, f.vertices, 4, indices, 6);
 		}
 	}
@@ -742,7 +794,11 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 	material_water1.setFlag(video::EMF_BILINEAR_FILTER, false);
 	material_water1.setFlag(video::EMF_FOG_ENABLE, true);
 	material_water1.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
-	material_water1.setTexture(0, g_irrlicht->getTexture("water.png"));
+	//TODO
+	//material_water1.setTexture(0, g_irrlicht->getTexture("water.png"));
+	AtlasPointer pa_water1 = g_texturesource->getTexture(
+			g_texturesource->getTextureId("water.png"));
+	material_water1.setTexture(0, pa_water1.atlas);
 
 	// New-style leaves material
 	video::SMaterial material_leaves1;
@@ -751,7 +807,11 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 	material_leaves1.setFlag(video::EMF_BILINEAR_FILTER, false);
 	material_leaves1.setFlag(video::EMF_FOG_ENABLE, true);
 	material_leaves1.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-	material_leaves1.setTexture(0, g_irrlicht->getTexture("leaves.png"));
+	//TODO
+	//material_leaves1.setTexture(0, g_irrlicht->getTexture("leaves.png"));
+	AtlasPointer pa_leaves1 = g_texturesource->getTexture(
+			g_texturesource->getTextureId("leaves.png"));
+	material_leaves1.setTexture(0, pa_leaves1.atlas);
 
 	for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 	for(s16 y=0; y<MAP_BLOCKSIZE; y++)
@@ -804,7 +864,8 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			//material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 			material.MaterialType
 					= video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-			if(dir == v3s16(0,-1,0))
+			//TODO
+			/*if(dir == v3s16(0,-1,0))
 				material.setTexture(0,
 						g_irrlicht->getTexture("torch_on_floor.png"));
 			else if(dir == v3s16(0,1,0))
@@ -816,7 +877,7 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 						g_irrlicht->getTexture("torch_on_floor.png"));
 			else
 				material.setTexture(0, 
-						g_irrlicht->getTexture("torch.png"));
+						g_irrlicht->getTexture("torch.png"));*/
 
 			u16 indices[] = {0,1,2,2,3,0};
 			// Add to mesh collector
@@ -974,14 +1035,18 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 				
 				video::S3DVertex vertices[4] =
 				{
-					/*video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c, 0,1),
+					/*video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
-					video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c, 1,1),
-					video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c, 1,0),
-					video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c, 0,0),*/
-					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,1),
 					video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,1),
 					video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
-					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
+					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
+					video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
+							pa_water1.x0(), pa_water1.y1()),
+					video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
+							pa_water1.x1(), pa_water1.y1()),
+					video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
+							pa_water1.x1(), pa_water1.y0()),
+					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
+							pa_water1.x0(), pa_water1.y0()),
 				};
 				
 				/*
@@ -1048,10 +1113,18 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			{
 				video::S3DVertex vertices[4] =
 				{
-					video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
+					/*video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
 					video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,1),
 					video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
-					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
+					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
+					video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
+							pa_water1.x0(), pa_water1.y1()),
+					video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
+							pa_water1.x1(), pa_water1.y1()),
+					video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
+							pa_water1.x1(), pa_water1.y0()),
+					video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
+							pa_water1.x0(), pa_water1.y0()),
 				};
 
 				for(s32 i=0; i<4; i++)
@@ -1092,10 +1165,18 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			
 			video::S3DVertex vertices[4] =
 			{
-				video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
+				/*video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c, 0,1),
 				video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c, 1,1),
 				video::S3DVertex(BS/2,0,BS/2, 0,0,0, c, 1,0),
-				video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),
+				video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c, 0,0),*/
+				video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
+						pa_water1.x0(), pa_water1.y1()),
+				video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
+						pa_water1.x1(), pa_water1.y1()),
+				video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
+						pa_water1.x1(), pa_water1.y0()),
+				video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
+						pa_water1.x0(), pa_water1.y0()),
 			};
 
 			for(s32 i=0; i<4; i++)
@@ -1120,10 +1201,18 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			{
 				video::S3DVertex vertices[4] =
 				{
-					video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c, 0,1),
+					/*video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c, 0,1),
 					video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c, 1,1),
 					video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c, 1,0),
-					video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c, 0,0),
+					video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c, 0,0),*/
+					video::S3DVertex(-BS/2,-BS/2,BS/2, 0,0,0, c,
+						pa_leaves1.x0(), pa_leaves1.y1()),
+					video::S3DVertex(BS/2,-BS/2,BS/2, 0,0,0, c,
+						pa_leaves1.x1(), pa_leaves1.y1()),
+					video::S3DVertex(BS/2,BS/2,BS/2, 0,0,0, c,
+						pa_leaves1.x1(), pa_leaves1.y0()),
+					video::S3DVertex(-BS/2,BS/2,BS/2, 0,0,0, c,
+						pa_leaves1.x0(), pa_leaves1.y0()),
 				};
 
 				if(j == 0)
@@ -1173,6 +1262,9 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 		Add stuff from collector to mesh
 	*/
 	
+	scene::SMesh *mesh_new = NULL;
+	mesh_new = new scene::SMesh();
+	
 	collector.fillMesh(mesh_new);
 
 	/*
@@ -1191,13 +1283,25 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 		mesh_new = NULL;
 	}
 
+	if(mesh_new)
+	{
+#if 0
+		// Usually 1-700 faces and 1-7 materials
+		std::cout<<"Updated MapBlock has "<<fastfaces_new.size()<<" faces "
+				<<"and uses "<<mesh_new->getMeshBufferCount()
+				<<" materials (meshbuffers)"<<std::endl;
+#endif
+
 		// Use VBO for mesh (this just would set this for ever buffer)
 		// This will lead to infinite memory usage because or irrlicht.
 		//mesh_new->setHardwareMappingHint(scene::EHM_STATIC);
 
-	/*std::cout<<"MapBlock has "<<fastfaces_new.size()<<" faces "
+		/*
-			<<"and uses "<<mesh_new->getMeshBufferCount()
+			NOTE: If that is enabled, some kind of a queue to the main
-			<<" materials (meshbuffers)"<<std::endl;*/
+			thread should be made which would call irrlicht to delete
+			the hardware buffer and then delete the mesh
+		*/
+	}
 	
 	/*
 		Replace the mesh

src/mapnode.cpp

@@ -17,6 +17,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "common_irrlicht.h"
 #include "mapnode.h"
 #include "tile.h"
 #include "porting.h"
@@ -31,6 +32,20 @@ ContentFeatures::~ContentFeatures()
 		delete translate_to;
 }
 
+void ContentFeatures::setTexture(u16 i, std::string name, u8 alpha)
+{
+	if(g_texturesource)
+	{
+		tiles[i].texture = g_texturesource->getTexture(name);
+	}
+	
+	if(alpha != 255)
+	{
+		tiles[i].alpha = alpha;
+		tiles[i].material_type = MATERIAL_ALPHA_VERTEX;
+	}
+}
+
 struct ContentFeatures g_content_features[256];
 
 ContentFeatures & content_features(u8 i)
@@ -40,56 +55,75 @@ ContentFeatures & content_features(u8 i)
 
 void init_mapnode(IIrrlichtWrapper *irrlicht)
 {
+	// Read some settings
 	bool new_style_water = g_settings.getBool("new_style_water");
 	bool new_style_leaves = g_settings.getBool("new_style_leaves");
 
+	/*
+		Initialize content feature table
+	*/
+	
+	/*
+		Set initial material type to same in all tiles, so that the
+		same material can be used in more stuff.
+		This is set according to the leaves because they are the only
+		differing material to which all materials can be changed to
+		get this optimization.
+	*/
+	u8 initial_material_type = MATERIAL_ALPHA_SIMPLE;
+	/*if(new_style_leaves)
+		initial_material_type = MATERIAL_ALPHA_SIMPLE;
+	else
+		initial_material_type = MATERIAL_ALPHA_NONE;*/
+	for(u16 i=0; i<256; i++)
+	{
+		ContentFeatures *f = &g_content_features[i];
+		for(u16 j=0; j<6; j++)
+			f->tiles[j].material_type = initial_material_type;
+	}
+	
 	u8 i;
 	ContentFeatures *f = NULL;
 
 	i = CONTENT_STONE;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("stone.png"));
+	f->setAllTextures("stone.png");
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
 	i = CONTENT_GRASS;
 	f = &g_content_features[i];
-	f->setAllTextures(TextureSpec(irrlicht->getTextureId("mud.png"),
+	f->setAllTextures("mud.png^grass_side.png");
-			irrlicht->getTextureId("grass_side.png")));
+	f->setTexture(0, "grass.png");
-	f->setTexture(0, irrlicht->getTextureId("grass.png"));
+	f->setTexture(1, "mud.png");
-	f->setTexture(1, irrlicht->getTextureId("mud.png"));
+	//f->setInventoryTexture(irrlicht->getTextureId("grass.png"));
-	f->setInventoryTexture(irrlicht->getTextureId("grass.png"));
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
 	i = CONTENT_GRASS_FOOTSTEPS;
 	f = &g_content_features[i];
-	f->setAllTextures(TextureSpec(irrlicht->getTextureId("mud.png"),
+	//f->setInventoryTexture(irrlicht->getTextureId("grass_footsteps.png"));
-			irrlicht->getTextureId("grass_side.png")));
-	f->setTexture(0, irrlicht->getTextureId("grass_footsteps.png"));
-	f->setTexture(1, irrlicht->getTextureId("mud.png"));
-	f->setInventoryTexture(irrlicht->getTextureId("grass_footsteps.png"));
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
 	i = CONTENT_MUD;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("mud.png"));
+	f->setAllTextures("mud.png");
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
 	i = CONTENT_SAND;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("sand.png"));
+	f->setAllTextures("sand.png");
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
 	i = CONTENT_TREE;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("tree.png"));
+	f->setAllTextures("tree.png");
-	f->setTexture(0, irrlicht->getTextureId("tree_top.png"));
+	f->setTexture(0, "tree_top.png");
-	f->setTexture(1, irrlicht->getTextureId("tree_top.png"));
+	f->setTexture(1, "tree_top.png");
-	f->setInventoryTexture(irrlicht->getTextureId("tree_top.png"));
+	//f->setInventoryTexture(irrlicht->getTextureId("tree_top.png"));
 	f->param_type = CPT_MINERAL;
 	f->is_ground_content = true;
 	
@@ -105,36 +139,33 @@ void init_mapnode(IIrrlichtWrapper *irrlicht)
 	}
 	else
 	{
-		f->setAllTextures(irrlicht->getTextureId("leaves.png"));
+		f->setAllTextures("[noalpha:leaves.png");
 	}
-	/*{
-		TileSpec t;
-		t.spec = TextureSpec(irrlicht->getTextureId("leaves.png"));
-		//t.material_type = MATERIAL_ALPHA_SIMPLE;
-		//t.material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
-		f->setAllTiles(t);
-	}*/
 	
 	i = CONTENT_COALSTONE;
 	f = &g_content_features[i];
 	//f->translate_to = new MapNode(CONTENT_STONE, MINERAL_COAL);
-	f->setAllTextures(TextureSpec(irrlicht->getTextureId("coal.png"),
+	/*f->setAllTextures(TextureSpec(irrlicht->getTextureId("coal.png"),
-			irrlicht->getTextureId("mineral_coal.png")));
+			irrlicht->getTextureId("mineral_coal.png")));*/
+	f->setAllTextures("stone.png^mineral_coal.png");
 	f->is_ground_content = true;
 	
 	i = CONTENT_WOOD;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("wood.png"));
+	//f->setAllTextures(irrlicht->getTextureId("wood.png"));
+	f->setAllTextures("wood.png");
 	f->is_ground_content = true;
 	
 	i = CONTENT_MESE;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("mese.png"));
+	//f->setAllTextures(irrlicht->getTextureId("mese.png"));
+	f->setAllTextures("mese.png");
 	f->is_ground_content = true;
 	
 	i = CONTENT_CLOUD;
 	f = &g_content_features[i];
-	f->setAllTextures(irrlicht->getTextureId("cloud.png"));
+	//f->setAllTextures(irrlicht->getTextureId("cloud.png"));
+	f->setAllTextures("cloud.png");
 	f->is_ground_content = true;
 	
 	i = CONTENT_AIR;
@@ -150,7 +181,7 @@ void init_mapnode(IIrrlichtWrapper *irrlicht)
 	
 	i = CONTENT_WATER;
 	f = &g_content_features[i];
-	f->setInventoryTexture(irrlicht->getTextureId("water.png"));
+	//f->setInventoryTexture(irrlicht->getTextureId("water.png"));
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->solidness = 0; // Drawn separately, makes no faces
@@ -162,21 +193,23 @@ void init_mapnode(IIrrlichtWrapper *irrlicht)
 	
 	i = CONTENT_WATERSOURCE;
 	f = &g_content_features[i];
-	f->setInventoryTexture(irrlicht->getTextureId("water.png"));
+	//f->setInventoryTexture(irrlicht->getTextureId("water.png"));
 	if(new_style_water)
 	{
 		f->solidness = 0; // drawn separately, makes no faces
 	}
 	else // old style
 	{
-		f->setAllTextures(irrlicht->getTextureId("water.png"), WATER_ALPHA);
+		f->solidness = 1;
+
 		TileSpec t;
-		t.spec = TextureSpec(irrlicht->getTextureId("water.png"));
+		if(g_texturesource)
+			t.texture = g_texturesource->getTexture("water.png");
+		
 		t.alpha = WATER_ALPHA;
 		t.material_type = MATERIAL_ALPHA_VERTEX;
 		t.material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
 		f->setAllTiles(t);
-		f->solidness = 1;
 	}
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
@@ -188,7 +221,6 @@ void init_mapnode(IIrrlichtWrapper *irrlicht)
 	
 	i = CONTENT_TORCH;
 	f = &g_content_features[i];
-	f->setInventoryTexture(irrlicht->getTextureId("torch_on_floor.png"));
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->solidness = 0; // drawn separately, makes no faces
@@ -224,13 +256,23 @@ TileSpec MapNode::getTile(v3s16 dir)
 	else 
 		spec = content_features(d).tiles[dir_i];
 	
-	if(content_features(d).param_type == CPT_MINERAL)
+	/*
+		If it contains some mineral, change texture id
+	*/
+	if(content_features(d).param_type == CPT_MINERAL && g_texturesource)
 	{
 		u8 mineral = param & 0x1f;
-		// Add mineral block texture
+		std::string mineral_texture_name = mineral_block_texture(mineral);
-		textureid_t tid = mineral_block_texture(mineral);
+		if(mineral_texture_name != "")
-		if(tid != 0)
+		{
-			spec.spec.addTid(tid);
+			u32 orig_id = spec.texture.id;
+			std::string texture_name = g_texturesource->getTextureName(orig_id);
+			//texture_name += "^blit:";
+			texture_name += "^";
+			texture_name += mineral_texture_name;
+			u32 new_id = g_texturesource->getTextureId(texture_name);
+			spec.texture = g_texturesource->getTexture(new_id);
+		}
 	}
 
 	return spec;

src/mapnode.h

@@ -133,8 +133,10 @@ struct ContentFeatures
 	*/
 	TileSpec tiles[6];
 	
+	// TODO: Somehow specify inventory image
 	//std::string inventory_image_path;
-	TextureSpec inventory_texture;
+	//TextureSpec inventory_texture;
+	//u32 inventory_texture_id;
 
 	bool is_ground_content; //TODO: Remove, use walkable instead
 	bool light_propagates;
@@ -167,27 +169,36 @@ struct ContentFeatures
 
 	~ContentFeatures();
 	
-	// Quickhands for simple materials
+	/*
-	void setTexture(u16 i, const TextureSpec &spec, u8 alpha=255)
+		Quickhands for simple materials
+	*/
+	
+	void setTexture(u16 i, std::string name, u8 alpha=255);
+
+	void setAllTextures(std::string name, u8 alpha=255)
 	{
-		tiles[i].spec = spec;
+		for(u16 i=0; i<6; i++)
+		{
+			setTexture(i, name, alpha);
+		}
+	}
+
+	/*void setTexture(u16 i, AtlasPointer p, u8 alpha=255)
+	{
+		tiles[i].texture = p;
 		if(alpha != 255)
 		{
 			tiles[i].alpha = alpha;
 			tiles[i].material_type = MATERIAL_ALPHA_VERTEX;
 		}
 	}
-	void setAllTextures(const TextureSpec &spec, u8 alpha=255)
+	void setAllTextures(AtlasPointer p, u8 alpha=255)
 	{
 		for(u16 i=0; i<6; i++)
 		{
-			setTexture(i, spec, alpha);
+			setTexture(i, p, alpha);
-		}
-		
-		// Set this too so it can be left as is most times
-		if(inventory_texture.empty())
-			inventory_texture = spec;
 		}
+	}*/
 
 	void setTile(u16 i, const TileSpec &tile)
 	{
@@ -201,10 +212,10 @@ struct ContentFeatures
 		}
 	}
 
-	void setInventoryTexture(const TextureSpec &spec)
+	/*void setInventoryTexture(const TextureSpec &spec)
 	{
 		inventory_texture = spec;
-	}
+	}*/
 
 	/*void setInventoryImage(std::string imgname)
 	{

src/mineral.cpp

@@ -27,7 +27,8 @@ const char *mineral_filenames[MINERAL_COUNT] =
 	"mineral_iron.png"
 };
 
-textureid_t mineral_textures[MINERAL_COUNT] = {0};
+//textureid_t mineral_textures[MINERAL_COUNT] = {0};
+std::string mineral_textures[MINERAL_COUNT];
 
 void init_mineral(IIrrlichtWrapper *irrlicht)
 {
@@ -35,14 +36,17 @@ void init_mineral(IIrrlichtWrapper *irrlicht)
 	{
 		if(mineral_filenames[i] == NULL)
 			continue;
-		mineral_textures[i] = irrlicht->getTextureId(mineral_filenames[i]);
+		//mineral_textures[i] = irrlicht->getTextureId(mineral_filenames[i]);
+		//mineral_textures[i] = 0;
+		mineral_textures[i] = mineral_filenames[i];
 	}
 }
 
-textureid_t mineral_block_texture(u8 mineral)
+//textureid_t mineral_block_texture(u8 mineral)
+std::string mineral_block_texture(u8 mineral)
 {
 	if(mineral >= MINERAL_COUNT)
-		return 0;
+		return "";
 	
 	return mineral_textures[mineral];
 }

src/mineral.h

@@ -40,7 +40,8 @@ void init_mineral(IIrrlichtWrapper *irrlicht);
 
 #define MINERAL_COUNT 3
 
-textureid_t mineral_block_texture(u8 mineral);
+//textureid_t mineral_block_texture(u8 mineral);
+std::string mineral_block_texture(u8 mineral);
 
 inline CraftItem * getDiggedMineralItem(u8 mineral)
 {

src/server.cpp

@@ -1642,6 +1642,8 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				os<<name<<L",";
 			}
 			os<<L"}";
+			if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
+				os<<" WARNING: Map saving is disabled."<<std::endl;
 			// Send message
 			SendChatMessage(peer_id, os.str());
 		}

src/texture.h

@@ -20,6 +20,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef TEXTURE_HEADER
 #define TEXTURE_HEADER
 
+// This file now contains all that was here
+#include "tile.h"
+
+// TODO: Remove this
+typedef u16 textureid_t;
+
+#if 0
+
 #include "common_irrlicht.h"
 //#include "utility.h"
 #include "debug.h"
@@ -122,3 +130,5 @@ struct TextureSpec
 };
 
 #endif
+
+#endif

src/tile.cpp

@@ -18,10 +18,770 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "tile.h"
-//#include "porting.h"
+#include "debug.h"
-// For IrrlichtWrapper
-//#include "main.h"
-//#include <string>
 
-// Nothing here
+TextureSource::TextureSource(IrrlichtDevice *device):
+		m_device(device),
+		m_main_atlas_image(NULL),
+		m_main_atlas_texture(NULL)
+{
+	assert(m_device);
+	
+	m_atlaspointer_cache_mutex.Init();
+	
+	m_main_thread = get_current_thread_id();
+	
+	// Add a NULL AtlasPointer as the first index, named ""
+	m_atlaspointer_cache.push_back(SourceAtlasPointer(""));
+	m_name_to_id[""] = 0;
+
+	// Build main texture atlas
+	buildMainAtlas();
+}
+
+TextureSource::~TextureSource()
+{
+}
+
+void TextureSource::processQueue()
+{
+	/*
+		Fetch textures
+	*/
+	if(m_get_texture_queue.size() > 0)
+	{
+		GetRequest<std::string, u32, u8, u8>
+				request = m_get_texture_queue.pop();
+
+		dstream<<"INFO: TextureSource::processQueue(): "
+				<<"got texture request with "
+				<<"name="<<request.key
+				<<std::endl;
+
+		GetResult<std::string, u32, u8, u8>
+				result;
+		result.key = request.key;
+		result.callers = request.callers;
+		result.item = getTextureIdDirect(request.key);
+
+		request.dest->push_back(result);
+	}
+}
+
+u32 TextureSource::getTextureId(const std::string &name)
+{
+	//dstream<<"INFO: getTextureId(): name="<<name<<std::endl;
+
+	{
+		/*
+			See if texture already exists
+		*/
+		JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+		core::map<std::string, u32>::Node *n;
+		n = m_name_to_id.find(name);
+		if(n != NULL)
+		{
+			return n->getValue();
+		}
+	}
+	
+	/*
+		Get texture
+	*/
+	if(get_current_thread_id() == m_main_thread)
+	{
+		return getTextureIdDirect(name);
+	}
+	else
+	{
+		dstream<<"INFO: getTextureId(): Queued: name="<<name<<std::endl;
+
+		// We're gonna ask the result to be put into here
+		ResultQueue<std::string, u32, u8, u8> result_queue;
+		
+		// Throw a request in
+		m_get_texture_queue.add(name, 0, 0, &result_queue);
+		
+		dstream<<"INFO: Waiting for texture from main thread, name="
+				<<name<<std::endl;
+		
+		try
+		{
+			// Wait result for a second
+			GetResult<std::string, u32, u8, u8>
+					result = result_queue.pop_front(1000);
+		
+			// Check that at least something worked OK
+			assert(result.key == name);
+
+			return result.item;
+		}
+		catch(ItemNotFoundException &e)
+		{
+			dstream<<"WARNING: Waiting for texture timed out."<<std::endl;
+			return 0;
+		}
+	}
+	
+	dstream<<"WARNING: getTextureId(): Failed"<<std::endl;
+
+	return 0;
+}
+
+// Draw a progress bar on the image
+void make_progressbar(float value, video::IImage *image);
+
+/*
+	Generate image based on a string like "stone.png" or "[crack0".
+	if baseimg is NULL, it is created. Otherwise stuff is made on it.
+*/
+bool generate_image(std::string part_of_name, video::IImage *& baseimg,
+		video::IVideoDriver* driver);
+
+/*
+	Generates an image from a full string like
+	"stone.png^mineral_coal.png^[crack0".
+
+	This is used by buildMainAtlas().
+*/
+video::IImage* generate_image_from_scratch(std::string name,
+		video::IVideoDriver* driver);
+
+/*
+	This method generates all the textures
+*/
+u32 TextureSource::getTextureIdDirect(const std::string &name)
+{
+	dstream<<"INFO: getTextureIdDirect(): name="<<name<<std::endl;
+
+	// Empty name means texture 0
+	if(name == "")
+	{
+		dstream<<"INFO: getTextureIdDirect(): name is empty"<<std::endl;
+		return 0;
+	}
+	
+	/*
+		Calling only allowed from main thread
+	*/
+	if(get_current_thread_id() != m_main_thread)
+	{
+		dstream<<"ERROR: TextureSource::getTextureIdDirect() "
+				"called not from main thread"<<std::endl;
+		return 0;
+	}
+
+	/*
+		See if texture already exists
+	*/
+	{
+		JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+
+		core::map<std::string, u32>::Node *n;
+		n = m_name_to_id.find(name);
+		if(n != NULL)
+		{
+			dstream<<"INFO: getTextureIdDirect(): name="<<name
+					<<" found in cache"<<std::endl;
+			return n->getValue();
+		}
+	}
+
+	dstream<<"INFO: getTextureIdDirect(): name="<<name
+			<<" NOT found in cache. Creating it."<<std::endl;
+	
+	/*
+		Get the base image
+	*/
+
+	char separator = '^';
+
+	/*
+		This is set to the id of the base image.
+		If left 0, there is no base image and a completely new image
+		is made.
+	*/
+	u32 base_image_id = 0;
+	
+	// Find last meta separator in name
+	s32 last_separator_position = -1;
+	for(s32 i=name.size()-1; i>=0; i--)
+	{
+		if(name[i] == separator)
+		{
+			last_separator_position = i;
+			break;
+		}
+	}
+	/*
+		If separator was found, construct the base name and make the
+		base image using a recursive call
+	*/
+	std::string base_image_name;
+	if(last_separator_position != -1)
+	{
+		// Construct base name
+		base_image_name = name.substr(0, last_separator_position);
+		dstream<<"INFO: getTextureIdDirect(): Calling itself recursively"
+				" to get base image, name="<<base_image_name<<std::endl;
+		base_image_id = getTextureIdDirect(base_image_name);
+	}
+	
+	dstream<<"base_image_id="<<base_image_id<<std::endl;
+	
+	video::IVideoDriver* driver = m_device->getVideoDriver();
+	assert(driver);
+
+	video::ITexture *t = NULL;
+
+	/*
+		An image will be built from files and then converted into a texture.
+	*/
+	video::IImage *baseimg = NULL;
+	
+	// If a base image was found, copy it to baseimg
+	if(base_image_id != 0)
+	{
+		JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+
+		SourceAtlasPointer ap = m_atlaspointer_cache[base_image_id];
+
+		video::IImage *image = ap.atlas_img;
+
+		core::dimension2d<u32> dim = ap.intsize;
+
+		baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+
+		core::position2d<s32> pos_to(0,0);
+		core::position2d<s32> pos_from = ap.intpos;
+		
+		image->copyTo(
+				baseimg, // target
+				v2s32(0,0), // position in target
+				core::rect<s32>(pos_from, dim) // from
+		);
+
+		dstream<<"INFO: getTextureIdDirect(): Loaded \""
+				<<base_image_name<<"\" from image cache"
+				<<std::endl;
+	}
+	
+	/*
+		Parse out the last part of the name of the image and act
+		according to it
+	*/
+
+	std::string last_part_of_name = name.substr(last_separator_position+1);
+	dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
+	
+	// Generate image according to part of name
+	if(generate_image(last_part_of_name, baseimg, driver) == false)
+	{
+		dstream<<"INFO: getTextureIdDirect(): "
+				"failed to generate \""<<last_part_of_name<<"\""
+				<<std::endl;
+		return 0;
+	}
+
+	// If no resulting image, return NULL
+	if(baseimg == NULL)
+	{
+		dstream<<"WARNING: getTextureIdDirect(): baseimg is NULL (attempted to"
+				" create texture \""<<name<<"\""<<std::endl;
+		return 0;
+	}
+
+	// Create texture from resulting image
+	t = driver->addTexture(name.c_str(), baseimg);
+	
+	// If no texture
+	if(t == NULL)
+		return 0;
+
+	/*
+		Add texture to caches
+	*/
+
+	JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+	
+	u32 id = m_atlaspointer_cache.size();
+	AtlasPointer ap(id);
+	ap.atlas = t;
+	ap.pos = v2f(0,0);
+	ap.size = v2f(1,1);
+	ap.tiled = 0;
+	SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg->getDimension());
+	m_atlaspointer_cache.push_back(nap);
+	m_name_to_id.insert(name, id);
+
+	dstream<<"INFO: getTextureIdDirect(): name="<<name
+			<<": succesfully returning id="<<id<<std::endl;
+	
+	return id;
+}
+
+std::string TextureSource::getTextureName(u32 id)
+{
+	JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+
+	if(id >= m_atlaspointer_cache.size())
+	{
+		dstream<<"WARNING: TextureSource::getTextureName(): id="<<id
+				<<" >= m_atlaspointer_cache.size()="
+				<<m_atlaspointer_cache.size()<<std::endl;
+		return "";
+	}
+	
+	return m_atlaspointer_cache[id].name;
+}
+
+
+AtlasPointer TextureSource::getTexture(u32 id)
+{
+	JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+
+	if(id >= m_atlaspointer_cache.size())
+		return AtlasPointer(0, NULL);
+	
+	return m_atlaspointer_cache[id].a;
+}
+
+void TextureSource::buildMainAtlas() 
+{
+	dstream<<"TextureSource::buildMainAtlas()"<<std::endl;
+
+	//return; // Disable (for testing)
+	
+	video::IVideoDriver* driver = m_device->getVideoDriver();
+	assert(driver);
+
+	JMutexAutoLock lock(m_atlaspointer_cache_mutex);
+
+	// Create an image of the right size
+	core::dimension2d<u32> atlas_dim(1024,1024);
+	video::IImage *atlas_img =
+			driver->createImage(video::ECF_A8R8G8B8, atlas_dim);
+
+	/*
+		A list of stuff to add. This should contain as much of the
+		stuff shown in game as possible, to minimize texture changes.
+	*/
+
+	core::array<std::string> sourcelist;
+
+	sourcelist.push_back("stone.png");
+	sourcelist.push_back("mud.png");
+	sourcelist.push_back("sand.png");
+	sourcelist.push_back("grass.png");
+	sourcelist.push_back("mud.png");
+	sourcelist.push_back("tree.png");
+	sourcelist.push_back("tree_top.png");
+	sourcelist.push_back("water.png");
+	sourcelist.push_back("leaves.png");
+	sourcelist.push_back("mud.png^grass_side.png");
+	
+	sourcelist.push_back("stone.png^mineral_coal.png");
+	sourcelist.push_back("stone.png^mineral_iron.png");
+	sourcelist.push_back("mud.png^mineral_coal.png");
+	sourcelist.push_back("mud.png^mineral_iron.png");
+	sourcelist.push_back("sand.png^mineral_coal.png");
+	sourcelist.push_back("sand.png^mineral_iron.png");
+	
+	/*
+		First pass: generate almost everything
+	*/
+	core::position2d<s32> pos_in_atlas(0,0);
+	for(u32 i=0; i<sourcelist.size(); i++)
+	{
+		std::string name = sourcelist[i];
+
+		/*video::IImage *img = driver->createImageFromFile(
+				porting::getDataPath(name.c_str()).c_str());
+		if(img == NULL)
+			continue;
+		
+		core::dimension2d<u32> dim = img->getDimension();
+		// Make a copy with the right color format
+		video::IImage *img2 =
+				driver->createImage(video::ECF_A8R8G8B8, dim);
+		img->copyTo(img2);
+		img->drop();*/
+		
+		// Generate image by name
+		video::IImage *img2 = generate_image_from_scratch(name, driver);
+		core::dimension2d<u32> dim = img2->getDimension();
+		
+		// Tile it a few times in the X direction
+		u16 xwise_tiling = 16;
+		for(u32 j=0; j<xwise_tiling; j++)
+		{
+			// Copy the copy to the atlas
+			img2->copyToWithAlpha(atlas_img,
+					pos_in_atlas + v2s32(j*dim.Width,0),
+					core::rect<s32>(v2s32(0,0), dim),
+					video::SColor(255,255,255,255),
+					NULL);
+		}
+
+		img2->drop();
+
+		/*
+			Add texture to caches
+		*/
+		
+		// Get next id
+		u32 id = m_atlaspointer_cache.size();
+
+		// Create AtlasPointer
+		AtlasPointer ap(id);
+		ap.atlas = NULL; // Set on the second pass
+		ap.pos = v2f((float)pos_in_atlas.X/(float)atlas_dim.Width,
+				(float)pos_in_atlas.Y/(float)atlas_dim.Height);
+		ap.size = v2f((float)dim.Width/(float)atlas_dim.Width,
+				(float)dim.Width/(float)atlas_dim.Height);
+		ap.tiled = xwise_tiling;
+
+		// Create SourceAtlasPointer and add to containers
+		SourceAtlasPointer nap(name, ap, atlas_img, pos_in_atlas, dim);
+		m_atlaspointer_cache.push_back(nap);
+		m_name_to_id.insert(name, id);
+			
+		// Increment position
+		pos_in_atlas.Y += dim.Height;
+	}
+
+	/*
+		Make texture
+	*/
+	video::ITexture *t = driver->addTexture("__main_atlas__", atlas_img);
+	assert(t);
+
+	/*
+		Second pass: set texture pointer in generated AtlasPointers
+	*/
+	for(u32 i=0; i<sourcelist.size(); i++)
+	{
+		std::string name = sourcelist[i];
+		u32 id = m_name_to_id[name];
+		m_atlaspointer_cache[id].a.atlas = t;
+	}
+
+	/*
+		Write image to file so that it can be inspected
+	*/
+	driver->writeImageToFile(atlas_img, 
+			porting::getDataPath("main_atlas.png").c_str());
+}
+
+video::IImage* generate_image_from_scratch(std::string name,
+		video::IVideoDriver* driver)
+{
+	dstream<<"INFO: generate_image_from_scratch(): "
+			"name="<<name<<std::endl;
+	
+	/*
+		Get the base image
+	*/
+
+	video::IImage *baseimg = NULL;
+
+	char separator = '^';
+
+	// Find last meta separator in name
+	s32 last_separator_position = -1;
+	for(s32 i=name.size()-1; i>=0; i--)
+	{
+		if(name[i] == separator)
+		{
+			last_separator_position = i;
+			break;
+		}
+	}
+
+	/*dstream<<"INFO: generate_image_from_scratch(): "
+			<<"last_separator_position="<<last_separator_position
+			<<std::endl;*/
+
+	/*
+		If separator was found, construct the base name and make the
+		base image using a recursive call
+	*/
+	std::string base_image_name;
+	if(last_separator_position != -1)
+	{
+		// Construct base name
+		base_image_name = name.substr(0, last_separator_position);
+		dstream<<"INFO: generate_image_from_scratch(): Calling itself recursively"
+				" to get base image, name="<<base_image_name<<std::endl;
+		baseimg = generate_image_from_scratch(base_image_name, driver);
+	}
+	
+	/*
+		Parse out the last part of the name of the image and act
+		according to it
+	*/
+
+	std::string last_part_of_name = name.substr(last_separator_position+1);
+	dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
+	
+	// Generate image according to part of name
+	if(generate_image(last_part_of_name, baseimg, driver) == false)
+	{
+		dstream<<"INFO: generate_image_from_scratch(): "
+				"failed to generate \""<<last_part_of_name<<"\""
+				<<std::endl;
+		return NULL;
+	}
+	
+	return baseimg;
+}
+
+bool generate_image(std::string part_of_name, video::IImage *& baseimg,
+		video::IVideoDriver* driver)
+{
+	// Stuff starting with [ are special commands
+	if(part_of_name[0] != '[')
+	{
+		// A normal texture; load it from a file
+		std::string path = porting::getDataPath(part_of_name.c_str());
+		dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
+				<<"\""<<std::endl;
+		
+		video::IImage *image = driver->createImageFromFile(path.c_str());
+
+		if(image == NULL)
+		{
+			dstream<<"WARNING: Could not load image \""<<part_of_name
+					<<"\" from path \""<<path<<"\""
+					<<" while building texture"<<std::endl;
+			return false;
+		}
+
+		// If base image is NULL, load as base.
+		if(baseimg == NULL)
+		{
+			dstream<<"INFO: Setting "<<part_of_name<<" as base"<<std::endl;
+			/*
+				Copy it this way to get an alpha channel.
+				Otherwise images with alpha cannot be blitted on 
+				images that don't have alpha in the original file.
+			*/
+			core::dimension2d<u32> dim = image->getDimension();
+			baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+			image->copyTo(baseimg);
+			image->drop();
+		}
+		// Else blit on base.
+		else
+		{
+			dstream<<"INFO: Blitting "<<part_of_name<<" on base"<<std::endl;
+			// Size of the copied area
+			core::dimension2d<u32> dim = image->getDimension();
+			//core::dimension2d<u32> dim(16,16);
+			// Position to copy the blitted to in the base image
+			core::position2d<s32> pos_to(0,0);
+			// Position to copy the blitted from in the blitted image
+			core::position2d<s32> pos_from(0,0);
+			// Blit
+			image->copyToWithAlpha(baseimg, pos_to,
+					core::rect<s32>(pos_from, dim),
+					video::SColor(255,255,255,255),
+					NULL);
+			// Drop image
+			image->drop();
+		}
+	}
+	else
+	{
+		// A special texture modification
+
+		dstream<<"INFO: getTextureIdDirect(): generating special "
+				<<"modification \""<<part_of_name<<"\""
+				<<std::endl;
+
+		if(part_of_name.substr(0,6) == "[crack")
+		{
+			if(baseimg == NULL)
+			{
+				dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
+						<<"for part_of_name="<<part_of_name
+						<<", cancelling."<<std::endl;
+				return false;
+			}
+
+			u16 progression = stoi(part_of_name.substr(6));
+			// Size of the base image
+			core::dimension2d<u32> dim_base = baseimg->getDimension();
+			// Crack will be drawn at this size
+			u32 cracksize = 16;
+			// Size of the crack image
+			core::dimension2d<u32> dim_crack(cracksize,cracksize);
+			// Position to copy the crack from in the crack image
+			core::position2d<s32> pos_other(0, 16 * progression);
+
+			video::IImage *crackimage = driver->createImageFromFile(
+					porting::getDataPath("crack.png").c_str());
+		
+			if(crackimage)
+			{
+				/*crackimage->copyToWithAlpha(baseimg, v2s32(0,0),
+						core::rect<s32>(pos_other, dim_base),
+						video::SColor(255,255,255,255),
+						NULL);*/
+
+				for(u32 y0=0; y0<dim_base.Height/dim_crack.Height; y0++)
+				for(u32 x0=0; x0<dim_base.Width/dim_crack.Width; x0++)
+				{
+					// Position to copy the crack to in the base image
+					core::position2d<s32> pos_base(x0*cracksize, y0*cracksize);
+					crackimage->copyToWithAlpha(baseimg, pos_base,
+							core::rect<s32>(pos_other, dim_crack),
+							video::SColor(255,255,255,255),
+							NULL);
+				}
+
+				crackimage->drop();
+			}
+		}
+		else if(part_of_name.substr(0,8) == "[combine")
+		{
+			// "[combine:16x128:0,0=stone.png:0,16=grass.png"
+			Strfnd sf(part_of_name);
+			sf.next(":");
+			u32 w0 = stoi(sf.next("x"));
+			u32 h0 = stoi(sf.next(":"));
+			dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
+			core::dimension2d<u32> dim(w0,h0);
+			baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+			while(sf.atend() == false)
+			{
+				u32 x = stoi(sf.next(","));
+				u32 y = stoi(sf.next("="));
+				std::string filename = sf.next(":");
+				dstream<<"INFO: Adding \""<<filename
+						<<"\" to combined ("<<x<<","<<y<<")"
+						<<std::endl;
+				video::IImage *img = driver->createImageFromFile(
+						porting::getDataPath(filename.c_str()).c_str());
+				if(img)
+				{
+					core::dimension2d<u32> dim = img->getDimension();
+					dstream<<"INFO: Size "<<dim.Width
+							<<"x"<<dim.Height<<std::endl;
+					core::position2d<s32> pos_base(x, y);
+					video::IImage *img2 =
+							driver->createImage(video::ECF_A8R8G8B8, dim);
+					img->copyTo(img2);
+					img->drop();
+					img2->copyToWithAlpha(baseimg, pos_base,
+							core::rect<s32>(v2s32(0,0), dim),
+							video::SColor(255,255,255,255),
+							NULL);
+					img2->drop();
+				}
+				else
+				{
+					dstream<<"WARNING: img==NULL"<<std::endl;
+				}
+			}
+		}
+		else if(part_of_name.substr(0,12) == "[progressbar")
+		{
+			if(baseimg == NULL)
+			{
+				dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
+						<<"for part_of_name="<<part_of_name
+						<<", cancelling."<<std::endl;
+				return false;
+			}
+
+			float value = stof(part_of_name.substr(12));
+			make_progressbar(value, baseimg);
+		}
+		// "[noalpha:filename.png"
+		// Use an image without it's alpha channel
+		else if(part_of_name.substr(0,8) == "[noalpha")
+		{
+			if(baseimg != NULL)
+			{
+				dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
+						<<"for part_of_name="<<part_of_name
+						<<", cancelling."<<std::endl;
+				return false;
+			}
+
+			std::string filename = part_of_name.substr(9);
+
+			std::string path = porting::getDataPath(filename.c_str());
+
+			dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
+					<<"\""<<std::endl;
+			
+			video::IImage *image = driver->createImageFromFile(path.c_str());
+			
+			if(image == NULL)
+			{
+				dstream<<"WARNING: getTextureIdDirect(): Loading path \""
+						<<path<<"\" failed"<<std::endl;
+			}
+			else
+			{
+				core::dimension2d<u32> dim = image->getDimension();
+				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+				
+				// Set alpha to full
+				for(u32 y=0; y<dim.Height; y++)
+				for(u32 x=0; x<dim.Width; x++)
+				{
+					video::SColor c = image->getPixel(x,y);
+					c.setAlpha(255);
+					image->setPixel(x,y,c);
+				}
+				// Blit
+				image->copyTo(baseimg);
+
+				image->drop();
+			}
+		}
+		else
+		{
+			dstream<<"WARNING: getTextureIdDirect(): Invalid "
+					" modification: \""<<part_of_name<<"\""<<std::endl;
+		}
+	}
+
+	return true;
+}
+
+void make_progressbar(float value, video::IImage *image)
+{
+	if(image == NULL)
+		return;
+	
+	core::dimension2d<u32> size = image->getDimension();
+
+	u32 barheight = 1;
+	u32 barpad_x = 1;
+	u32 barpad_y = 1;
+	u32 barwidth = size.Width - barpad_x*2;
+	v2u32 barpos(barpad_x, size.Height - barheight - barpad_y);
+
+	u32 barvalue_i = (u32)(((float)barwidth * value) + 0.5);
+
+	video::SColor active(255,255,0,0);
+	video::SColor inactive(255,0,0,0);
+	for(u32 x0=0; x0<barwidth; x0++)
+	{
+		video::SColor *c;
+		if(x0 < barvalue_i)
+			c = &active;
+		else
+			c = &inactive;
+		u32 x = x0 + barpos.X;
+		for(u32 y=barpos.Y; y<barpos.Y+barheight; y++)
+		{
+			image->setPixel(x,y, *c);
+		}
+	}
+}
 

src/tile.h

@@ -21,10 +21,208 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define TILE_HEADER
 
 #include "common_irrlicht.h"
-//#include "utility.h"
+#include "threads.h"
-#include "texture.h"
+#include "utility.h"
 #include <string>
 
+/*
+	Specifies a texture in an atlas.
+
+	This is used to specify single textures also.
+
+	This has been designed to be small enough to be thrown around a lot.
+*/
+struct AtlasPointer
+{
+	u32 id; // Texture id
+	video::ITexture *atlas; // Atlas in where the texture is
+	v2f pos; // Position in atlas
+	v2f size; // Size in atlas
+	u16 tiled; // X-wise tiling count. If 0, width of atlas is width of image.
+
+	AtlasPointer(
+			u16 id_,
+			video::ITexture *atlas_=NULL,
+			v2f pos_=v2f(0,0),
+			v2f size_=v2f(1,1),
+			u16 tiled_=1
+		):
+		id(id_),
+		atlas(atlas_),
+		pos(pos_),
+		size(size_),
+		tiled(tiled_)
+	{
+	}
+
+	bool operator==(const AtlasPointer &other)
+	{
+		return (
+			id == other.id
+		);
+		/*return (
+			id == other.id &&
+			atlas == other.atlas &&
+			pos == other.pos &&
+			size == other.size &&
+			tiled == other.tiled
+		);*/
+	}
+
+	float x0(){ return pos.X; }
+	float x1(){ return pos.X + size.X; }
+	float y0(){ return pos.Y; }
+	float y1(){ return pos.Y + size.Y; }
+};
+
+/*
+	An internal variant of the former with more data.
+*/
+struct SourceAtlasPointer
+{
+	std::string name;
+	AtlasPointer a;
+	video::IImage *atlas_img; // The source image of the atlas
+	// Integer variants of position and size
+	v2s32 intpos;
+	v2u32 intsize;
+
+	SourceAtlasPointer(
+			const std::string &name_,
+			AtlasPointer a_=AtlasPointer(0, NULL),
+			video::IImage *atlas_img_=NULL,
+			v2s32 intpos_=v2s32(0,0),
+			v2u32 intsize_=v2u32(0,0)
+		):
+		name(name_),
+		a(a_),
+		atlas_img(atlas_img_),
+		intpos(intpos_),
+		intsize(intsize_)
+	{
+	}
+};
+
+/*
+	Creates and caches textures.
+*/
+class TextureSource
+{
+public:
+	TextureSource(IrrlichtDevice *device);
+	~TextureSource();
+
+	/*
+		Processes queued texture requests from other threads.
+
+		Shall be called from the main thread.
+	*/
+	void processQueue();
+	
+	/*
+		Example case:
+		Now, assume a texture with the id 1 exists, and has the name
+		"stone.png^mineral1".
+		Then a random thread calls getTextureId for a texture called
+		"stone.png^mineral1^crack0".
+		...Now, WTF should happen? Well:
+		- getTextureId strips off stuff recursively from the end until
+		  the remaining part is found, or nothing is left when
+		  something is stripped out
+
+		But it is slow to search for textures by names and modify them
+		like that?
+		- ContentFeatures is made to contain ids for the basic plain
+		  textures
+		- Crack textures can be slow by themselves, but the framework
+		  must be fast.
+
+		Example case #2:
+		- Assume a texture with the id 1 exists, and has the name
+		  "stone.png^mineral1" and is specified as a part of some atlas.
+		- Now MapBlock::getNodeTile() stumbles upon a node which uses
+		  texture id 1, and finds out that NODEMOD_CRACK must be applied
+		  with progression=0
+		- It finds out the name of the texture with getTextureName(1),
+		  appends "^crack0" to it and gets a new texture id with
+		  getTextureId("stone.png^mineral1^crack0")
+
+	*/
+	
+	/*
+		Gets a texture id from cache or
+		- if main thread, from getTextureIdDirect
+		- if other thread, adds to request queue and waits for main thread
+	*/
+	u32 getTextureId(const std::string &name);
+	
+	/*
+		Example names:
+		"stone.png"
+		"stone.png^crack2"
+		"stone.png^blit:mineral_coal.png"
+		"stone.png^blit:mineral_coal.png^crack1"
+
+		- If texture specified by name is found from cache, return the
+		  cached id.
+		- Otherwise generate the texture, add to cache and return id.
+		  Recursion is used to find out the largest found part of the
+		  texture and continue based on it.
+
+		The id 0 points to a NULL texture. It is returned in case of error.
+	*/
+	u32 getTextureIdDirect(const std::string &name);
+
+	/*
+		Finds out the name of a cached texture.
+	*/
+	std::string getTextureName(u32 id);
+
+	/*
+		If texture specified by the name pointed by the id doesn't
+		exist, create it, then return the cached texture.
+
+		Can be called from any thread. If called from some other thread
+		and not found in cache, the call is queued to the main thread
+		for processing.
+	*/
+	AtlasPointer getTexture(u32 id);
+	
+	AtlasPointer getTexture(const std::string &name)
+	{
+		return getTexture(getTextureId(name));
+	}
+
+private:
+	/*
+		Build the main texture atlas which contains most of the
+		textures.
+		
+		This is called by the constructor.
+	*/
+	void buildMainAtlas();
+	
+	// The id of the thread that is allowed to use irrlicht directly
+	threadid_t m_main_thread;
+	// The irrlicht device
+	IrrlichtDevice *m_device;
+	
+	// A texture id is index in this array.
+	// The first position contains a NULL texture.
+	core::array<SourceAtlasPointer> m_atlaspointer_cache;
+	// Maps a texture name to an index in the former.
+	core::map<std::string, u32> m_name_to_id;
+	// The two former containers are behind this mutex
+	JMutex m_atlaspointer_cache_mutex;
+	
+	// Main texture atlas. This is filled at startup and is then not touched.
+	video::IImage *m_main_atlas_image;
+	video::ITexture *m_main_atlas_texture;
+
+	// Queued texture fetches (to be processed by the main thread)
+	RequestQueue<std::string, u32, u8, u8> m_get_texture_queue;
+};
+
 enum MaterialType{
 	MATERIAL_ALPHA_NONE,
 	MATERIAL_ALPHA_VERTEX,
@@ -38,12 +236,17 @@ enum MaterialType{
 /*
 	This fully defines the looks of a tile.
 	The SMaterial of a tile is constructed according to this.
+
+	TODO: Change this to use an AtlasPointer
 */
 struct TileSpec
 {
 	TileSpec():
+		texture(0),
 		alpha(255),
 		material_type(MATERIAL_ALPHA_NONE),
+		// Use this so that leaves don't need a separate material
+		//material_type(MATERIAL_ALPHA_SIMPLE),
 		material_flags(
 			MATERIAL_FLAG_BACKFACE_CULLING
 		)
@@ -53,7 +256,7 @@ struct TileSpec
 	bool operator==(TileSpec &other)
 	{
 		return (
-			spec == other.spec &&
+			texture == other.texture &&
 			alpha == other.alpha &&
 			material_type == other.material_type &&
 			material_flags == other.material_flags
@@ -80,8 +283,14 @@ struct TileSpec
 		material.BackfaceCulling = (material_flags & MATERIAL_FLAG_BACKFACE_CULLING) ? true : false;
 	}
 	
-	// Specification of texture
+	// NOTE: Deprecated, i guess?
-	TextureSpec spec;
+	void setTexturePos(u8 tx_, u8 ty_, u8 tw_, u8 th_)
+	{
+		texture.pos = v2f((float)tx_/256.0, (float)ty_/256.0);
+		texture.size = v2f(((float)tw_ + 1.0)/256.0, ((float)th_ + 1.0)/256.0);
+	}
+	
+	AtlasPointer texture;
 	// Vertex alpha
 	u8 alpha;
 	// Material type