X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fmapblock.cpp;h=2f6a4b850116522e8bd98c855f91819425ae8ec4;hb=7efe89ff584b2c0338dcede4c1e08504d0158780;hp=e828183969d7d4df7901faf7c54958977301ae41;hpb=fa64103aa87a8f0f2a3351bb4a54e93e8ade1082;p=dragonfireclient.git

diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index e82818396..2f6a4b850 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -19,12 +19,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "mapblock.h"
 #include "map.h"
-// For g_materials
+// For g_settings
 #include "main.h"
 #include "light.h"
 #include <sstream>
 
-
 /*
 	MapBlock
 */
@@ -32,16 +31,20 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 MapBlock::MapBlock(NodeContainer *parent, v3s16 pos, bool dummy):
 		m_parent(parent),
 		m_pos(pos),
-		changed(true),
+		m_modified(MOD_STATE_WRITE_NEEDED),
 		is_underground(false),
+		m_lighting_expired(true),
 		m_day_night_differs(false),
-		m_objects(this)
+		m_generated(false),
+		m_objects(this),
+		m_timestamp(BLOCK_TIMESTAMP_UNDEFINED),
+		m_usage_timer(BLOCK_TIMESTAMP_UNDEFINED)
 {
 	data = NULL;
 	if(dummy == false)
 		reallocate();
 	
-	m_spawn_timer = -10000;
+	//m_spawn_timer = -10000;
 
 #ifndef SERVER
 	m_mesh_expired = false;
@@ -130,437 +133,9 @@ MapNode MapBlock::getNodeParentNoEx(v3s16 p)
 	}
 }
 
-/*
-	Parameters must consist of air and !air.
-	Order doesn't matter.
-
-	If either of the nodes doesn't exist, light is 0.
-	
-	parameters:
-		daynight_ratio: 0...1000
-		n: getNodeParent(p)
-		n2: getNodeParent(p + face_dir)
-		face_dir: axis oriented unit vector from p to p2
-*/
-u8 MapBlock::getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
-		v3s16 face_dir)
-{
-	try{
-		u8 light;
-		u8 l1 = n.getLightBlend(daynight_ratio);
-		u8 l2 = n2.getLightBlend(daynight_ratio);
-		if(l1 > l2)
-			light = l1;
-		else
-			light = l2;
-
-		// Make some nice difference to different sides
-
-		/*if(face_dir.X == 1 || face_dir.Z == 1 || face_dir.Y == -1)
-			light = diminish_light(diminish_light(light));
-		else if(face_dir.X == -1 || face_dir.Z == -1)
-			light = diminish_light(light);*/
-
-		if(face_dir.X == 1 || face_dir.X == -1 || face_dir.Y == -1)
-			light = diminish_light(diminish_light(light));
-		else if(face_dir.Z == 1 || face_dir.Z == -1)
-			light = diminish_light(light);
-
-		return light;
-	}
-	catch(InvalidPositionException &e)
-	{
-		return 0;
-	}
-}
-
 #ifndef SERVER
 
-void MapBlock::makeFastFace(TileSpec tile, u8 light, v3f p,
-		v3s16 dir, v3f scale, v3f posRelative_f,
-		core::array<FastFace> &dest)
-{
-	FastFace face;
-	
-	// Position is at the center of the cube.
-	v3f pos = p * BS;
-	posRelative_f *= BS;
-
-	v3f vertex_pos[4];
-	// If looking towards z+, this is the face that is behind
-	// the center point, facing towards z+.
-	vertex_pos[0] = v3f( BS/2,-BS/2,BS/2);
-	vertex_pos[1] = v3f(-BS/2,-BS/2,BS/2);
-	vertex_pos[2] = v3f(-BS/2, BS/2,BS/2);
-	vertex_pos[3] = v3f( BS/2, BS/2,BS/2);
-	
-	if(dir == v3s16(0,0,1))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateXZBy(0);
-	}
-	else if(dir == v3s16(0,0,-1))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateXZBy(180);
-	}
-	else if(dir == v3s16(1,0,0))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateXZBy(-90);
-	}
-	else if(dir == v3s16(-1,0,0))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateXZBy(90);
-	}
-	else if(dir == v3s16(0,1,0))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateYZBy(-90);
-	}
-	else if(dir == v3s16(0,-1,0))
-	{
-		for(u16 i=0; i<4; i++)
-			vertex_pos[i].rotateYZBy(90);
-	}
-
-	for(u16 i=0; i<4; i++)
-	{
-		vertex_pos[i].X *= scale.X;
-		vertex_pos[i].Y *= scale.Y;
-		vertex_pos[i].Z *= scale.Z;
-		vertex_pos[i] += pos + posRelative_f;
-	}
-
-	f32 abs_scale = 1.;
-	if     (scale.X < 0.999 || scale.X > 1.001) abs_scale = scale.X;
-	else if(scale.Y < 0.999 || scale.Y > 1.001) abs_scale = scale.Y;
-	else if(scale.Z < 0.999 || scale.Z > 1.001) abs_scale = scale.Z;
-
-	v3f zerovector = v3f(0,0,0);
-	
-	//u8 li = decode_light(light);
-	u8 li = light;
-
-	u8 alpha = 255;
-
-	if(tile.id == TILE_WATER)
-	{
-		alpha = 128;
-	}
-
-	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[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.tile = tile;
-	//DEBUG
-	//f->tile = TILE_STONE;
-	
-	dest.push_back(face);
-	//return f;
-}
-	
-/*
-	Gets node tile from any place relative to block.
-	Returns TILE_NODE if doesn't exist or should not be drawn.
-*/
-TileSpec MapBlock::getNodeTile(MapNode mn, v3s16 p, v3s16 face_dir)
-{
-	// DEBUG
-	u16 *ptr = NULL;
-	*ptr = 7357;
-
-	TileSpec spec;
-
-	/*//DEBUG
-	{
-		spec.id = TILE_STONE;
-		return spec;
-	}*/
-
-	spec.feature = TILEFEAT_NONE;
-	//spec.id = TILE_STONE;
-	spec.id = mn.getTile(face_dir);
-
-	/*
-		Check temporary modifications on this node
-	*/
-	core::map<v3s16, NodeMod>::Node *n;
-	n = m_temp_mods.find(p);
-
-	// If modified
-	if(n != NULL)
-	{
-		struct NodeMod mod = n->getValue();
-		if(mod.type == NODEMOD_CHANGECONTENT)
-		{
-			spec.id = content_tile(mod.param, face_dir);
-		}
-		if(mod.type == NODEMOD_CRACK)
-		{
-			spec.feature = TILEFEAT_CRACK;
-			spec.param.crack.progression = mod.param;
-		}
-	}
-	
-	return spec;
-}
-
-u8 MapBlock::getNodeContent(v3s16 p, MapNode mn)
-{
-	/*
-		Check temporary modifications on this node
-	*/
-	core::map<v3s16, NodeMod>::Node *n;
-	n = m_temp_mods.find(p);
-
-	// If modified
-	if(n != NULL)
-	{
-		struct NodeMod mod = n->getValue();
-		if(mod.type == NODEMOD_CHANGECONTENT)
-		{
-			// Overrides content
-			return mod.param;
-		}
-		if(mod.type == NODEMOD_CRACK)
-		{
-			/*
-				Content doesn't change.
-				
-				face_contents works just like it should, because
-				there should not be faces between differently cracked
-				nodes.
-
-				If a semi-transparent node is cracked in front an
-				another one, it really doesn't matter whether there
-				is a cracked face drawn in between or not.
-			*/
-		}
-	}
-
-	return mn.d;
-}
-
-/*
-	startpos:
-	translate_dir: unit vector with only one of x, y or z
-	face_dir: unit vector with only one of x, y or z
-*/
-void MapBlock::updateFastFaceRow(
-		u32 daynight_ratio,
-		v3f posRelative_f,
-		v3s16 startpos,
-		u16 length,
-		v3s16 translate_dir,
-		v3f translate_dir_f,
-		v3s16 face_dir,
-		v3f face_dir_f,
-		core::array<FastFace> &dest)
-{
-	v3s16 p = startpos;
-	
-	u16 continuous_tiles_count = 0;
-	
-	MapNode n0 = getNodeParentNoEx(p);
-	MapNode n1 = getNodeParentNoEx(p + face_dir);
-
-	u8 light = getFaceLight(daynight_ratio, n0, n1, face_dir);
-		
-	TileSpec tile0 = getNodeTile(n0, p, face_dir);
-	TileSpec tile1 = getNodeTile(n1, p + face_dir, -face_dir);
-
-	for(u16 j=0; j<length; j++)
-	{
-		bool next_is_different = true;
-		
-		v3s16 p_next;
-		MapNode n0_next;
-		MapNode n1_next;
-		TileSpec tile0_next;
-		TileSpec tile1_next;
-		u8 light_next = 0;
-
-		if(j != length - 1)
-		{
-			p_next = p + translate_dir;
-			n0_next = getNodeParentNoEx(p_next);
-			n1_next = getNodeParentNoEx(p_next + face_dir);
-			tile0_next = getNodeTile(n0_next, p_next, face_dir);
-			tile1_next = getNodeTile(n1_next, p_next + face_dir, -face_dir);
-			light_next = getFaceLight(daynight_ratio, n0_next, n1_next, face_dir);
-
-			if(tile0_next == tile0
-					&& tile1_next == tile1
-					&& light_next == light)
-			{
-				next_is_different = false;
-			}
-		}
-
-		continuous_tiles_count++;
-		
-		if(next_is_different)
-		{
-			/*
-				Create a face if there should be one
-			*/
-			//u8 mf = face_contents(tile0, tile1);
-			// This is hackish
-			u8 content0 = getNodeContent(p, n0);
-			u8 content1 = getNodeContent(p + face_dir, n1);
-			u8 mf = face_contents(content0, content1);
-			
-			if(mf != 0)
-			{
-				// Floating point conversion of the position vector
-				v3f pf(p.X, p.Y, p.Z);
-				// Center point of face (kind of)
-				v3f sp = pf - ((f32)continuous_tiles_count / 2. - 0.5) * translate_dir_f;
-				v3f scale(1,1,1);
-				if(translate_dir.X != 0){
-					scale.X = continuous_tiles_count;
-				}
-				if(translate_dir.Y != 0){
-					scale.Y = continuous_tiles_count;
-				}
-				if(translate_dir.Z != 0){
-					scale.Z = continuous_tiles_count;
-				}
-				
-				//FastFace *f;
-
-				// If node at sp (tile0) is more solid
-				if(mf == 1)
-				{
-					makeFastFace(tile0, decode_light(light),
-							sp, face_dir, scale,
-							posRelative_f, dest);
-				}
-				// If node at sp is less solid (mf == 2)
-				else
-				{
-					makeFastFace(tile1, decode_light(light),
-							sp+face_dir_f, -face_dir, scale,
-							posRelative_f, dest);
-				}
-				//dest.push_back(f);
-			}
-
-			continuous_tiles_count = 0;
-			n0 = n0_next;
-			n1 = n1_next;
-			tile0 = tile0_next;
-			tile1 = tile1_next;
-			light = light_next;
-		}
-		
-		p = p_next;
-	}
-}
-
-/*
-	This is used because CMeshBuffer::append() is very slow
-*/
-struct PreMeshBuffer
-{
-	video::SMaterial material;
-	core::array<u16> indices;
-	core::array<video::S3DVertex> vertices;
-};
-
-class MeshCollector
-{
-public:
-	void append(
-			video::SMaterial material,
-			const video::S3DVertex* const vertices,
-			u32 numVertices,
-			const u16* const indices,
-			u32 numIndices
-		)
-	{
-		PreMeshBuffer *p = NULL;
-		for(u32 i=0; i<m_prebuffers.size(); i++)
-		{
-			PreMeshBuffer &pp = m_prebuffers[i];
-			if(pp.material != material)
-				continue;
-
-			p = &pp;
-			break;
-		}
-
-		if(p == NULL)
-		{
-			PreMeshBuffer pp;
-			pp.material = material;
-			m_prebuffers.push_back(pp);
-			p = &m_prebuffers[m_prebuffers.size()-1];
-		}
-
-		u32 vertex_count = p->vertices.size();
-		for(u32 i=0; i<numIndices; i++)
-		{
-			u32 j = indices[i] + vertex_count;
-			if(j > 65535)
-			{
-				dstream<<"FIXME: Meshbuffer ran out of indices"<<std::endl;
-				// NOTE: Fix is to just add an another MeshBuffer
-			}
-			p->indices.push_back(j);
-		}
-		for(u32 i=0; i<numVertices; i++)
-		{
-			p->vertices.push_back(vertices[i]);
-		}
-	}
-
-	void fillMesh(scene::SMesh *mesh)
-	{
-		/*dstream<<"Filling mesh with "<<m_prebuffers.size()
-				<<" meshbuffers"<<std::endl;*/
-		for(u32 i=0; i<m_prebuffers.size(); i++)
-		{
-			PreMeshBuffer &p = m_prebuffers[i];
-
-			/*dstream<<"p.vertices.size()="<<p.vertices.size()
-					<<", p.indices.size()="<<p.indices.size()
-					<<std::endl;*/
-			
-			// Create meshbuffer
-			
-			// This is a "Standard MeshBuffer",
-			// it's a typedeffed CMeshBuffer<video::S3DVertex>
-			scene::SMeshBuffer *buf = new scene::SMeshBuffer();
-			// Set material
-			buf->Material = p.material;
-			//((scene::SMeshBuffer*)buf)->Material = p.material;
-			// Use VBO
-			//buf->setHardwareMappingHint(scene::EHM_STATIC);
-			// Add to mesh
-			mesh->addMeshBuffer(buf);
-			// Mesh grabbed it
-			buf->drop();
-
-			buf->append(p.vertices.pointer(), p.vertices.size(),
-					p.indices.pointer(), p.indices.size());
-		}
-	}
-
-private:
-	core::array<PreMeshBuffer> m_prebuffers;
-};
-
+#if 1
 void MapBlock::updateMesh(u32 daynight_ratio)
 {
 #if 0
@@ -573,232 +148,23 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 			return;
 	}
 #endif
-	
-	// 4-21ms
-	//TimeTaker timer1("updateMesh()", g_device);
 
-	core::array<FastFace> fastfaces_new;
+	MeshMakeData data;
+	data.fill(daynight_ratio, this);
 	
-	v3f posRelative_f(getPosRelative().X, getPosRelative().Y,
-			getPosRelative().Z); // floating point conversion
+	scene::SMesh *mesh_new = makeMapBlockMesh(&data);
 	
 	/*
-		We are including the faces of the trailing edges of the block.
-		This means that when something changes, the caller must
-		also update the meshes of the blocks at the leading edges.
-
-		NOTE: This is the slowest part of this method.
-	*/
-	
-	{
-		// Lock this, as m_temp_mods will be used directly
-		JMutexAutoLock lock(m_temp_mods_mutex);
-
-		/*
-			Go through every y,z and get top faces in rows of x+
-		*/
-		for(s16 y=0; y<MAP_BLOCKSIZE; y++){
-			for(s16 z=0; z<MAP_BLOCKSIZE; z++){
-				updateFastFaceRow(daynight_ratio, posRelative_f,
-						v3s16(0,y,z), MAP_BLOCKSIZE,
-						v3s16(1,0,0), //dir
-						v3f  (1,0,0),
-						v3s16(0,1,0), //face dir
-						v3f  (0,1,0),
-						fastfaces_new);
-			}
-		}
-		/*
-			Go through every x,y and get right faces in rows of z+
-		*/
-		for(s16 x=0; x<MAP_BLOCKSIZE; x++){
-			for(s16 y=0; y<MAP_BLOCKSIZE; y++){
-				updateFastFaceRow(daynight_ratio, posRelative_f,
-						v3s16(x,y,0), MAP_BLOCKSIZE,
-						v3s16(0,0,1),
-						v3f  (0,0,1),
-						v3s16(1,0,0),
-						v3f  (1,0,0),
-						fastfaces_new);
-			}
-		}
-		/*
-			Go through every y,z and get back faces in rows of x+
-		*/
-		for(s16 z=0; z<MAP_BLOCKSIZE; z++){
-			for(s16 y=0; y<MAP_BLOCKSIZE; y++){
-				updateFastFaceRow(daynight_ratio, posRelative_f,
-						v3s16(0,y,z), MAP_BLOCKSIZE,
-						v3s16(1,0,0),
-						v3f  (1,0,0),
-						v3s16(0,0,1),
-						v3f  (0,0,1),
-						fastfaces_new);
-			}
-		}
-	}
-
-	// End of slow part
-
-	/*
-		Convert FastFaces to SMesh
-	*/
-
-	scene::SMesh *mesh_new = NULL;
-	
-	mesh_new = new scene::SMesh();
-	
-	if(fastfaces_new.size() > 0)
-	{
-		MeshCollector collector;
-
-		for(u32 i=0; i<fastfaces_new.size(); i++)
-		{
-			FastFace &f = fastfaces_new[i];
-
-			const u16 indices[] = {0,1,2,2,3,0};
-			
-			if(f.tile.feature == TILEFEAT_NONE)
-			{
-				collector.append(tile_material_get(f.tile.id), f.vertices, 4,
-						indices, 6);
-			}
-			else if(f.tile.feature == TILEFEAT_CRACK)
-			{
-				const char *path = tile_texture_path_get(f.tile.id);
-
-				u16 progression = f.tile.param.crack.progression;
-
-				std::string name = (std::string)path + "_cracked_"
-						+ (char)('0' + progression);
-
-				TextureMod *mod = new CrackTextureMod(progression);
-
-				video::ITexture *texture = g_irrlicht->getTexture(
-						TextureSpec(name, path, mod));
-
-				video::SMaterial material = tile_material_get(f.tile.id);
-				material.setTexture(0, texture);
-
-				collector.append(material, f.vertices, 4, indices, 6);
-			}
-			else
-			{
-				// No such feature
-				assert(0);
-			}
-		}
-
-		collector.fillMesh(mesh_new);
-
-		// 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->getSize()<<" faces "
-				<<"and uses "<<mesh_new->getMeshBufferCount()
-				<<" materials (meshbuffers)"<<std::endl;*/
-	}
-
-	/*
-		Add special graphics:
-		- torches
-		
-		TODO: Optimize by using same meshbuffer for same textures
-	*/
-
-	for(s16 z=0; z<MAP_BLOCKSIZE; z++)
-	for(s16 y=0; y<MAP_BLOCKSIZE; y++)
-	for(s16 x=0; x<MAP_BLOCKSIZE; x++)
-	{
-		v3s16 p(x,y,z);
-
-		MapNode &n = getNodeRef(x,y,z);
-		
-		if(n.d == CONTENT_TORCH)
-		{
-			//scene::IMeshBuffer *buf = new scene::SMeshBuffer();
-			scene::SMeshBuffer *buf = new scene::SMeshBuffer();
-			video::SColor c(255,255,255,255);
-
-			video::S3DVertex vertices[4] =
-			{
-				video::S3DVertex(-BS/2,-BS/2,0, 0,0,0, c, 0,1),
-				video::S3DVertex(BS/2,-BS/2,0, 0,0,0, c, 1,1),
-				video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
-				video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
-			};
-
-			v3s16 dir = unpackDir(n.dir);
-
-			for(s32 i=0; i<4; i++)
-			{
-				if(dir == v3s16(1,0,0))
-					vertices[i].Pos.rotateXZBy(0);
-				if(dir == v3s16(-1,0,0))
-					vertices[i].Pos.rotateXZBy(180);
-				if(dir == v3s16(0,0,1))
-					vertices[i].Pos.rotateXZBy(90);
-				if(dir == v3s16(0,0,-1))
-					vertices[i].Pos.rotateXZBy(-90);
-				if(dir == v3s16(0,-1,0))
-					vertices[i].Pos.rotateXZBy(45);
-				if(dir == v3s16(0,1,0))
-					vertices[i].Pos.rotateXZBy(-45);
-
-				vertices[i].Pos += intToFloat(p + getPosRelative());
-			}
-
-			u16 indices[] = {0,1,2,2,3,0};
-			buf->append(vertices, 4, indices, 6);
-
-			// Set material
-			buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
-			buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
-			buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
-			//buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-			buf->getMaterial().MaterialType
-					= video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-			if(dir == v3s16(0,-1,0))
-				buf->getMaterial().setTexture(0,
-						g_irrlicht->getTexture("../data/torch_on_floor.png"));
-			else if(dir == v3s16(0,1,0))
-				buf->getMaterial().setTexture(0,
-						g_irrlicht->getTexture("../data/torch_on_ceiling.png"));
-			// For backwards compatibility
-			else if(dir == v3s16(0,0,0))
-				buf->getMaterial().setTexture(0,
-						g_irrlicht->getTexture("../data/torch_on_floor.png"));
-			else
-				buf->getMaterial().setTexture(0, 
-						g_irrlicht->getTexture("../data/torch.png"));
-
-			// Add to mesh
-			mesh_new->addMeshBuffer(buf);
-			buf->drop();
-		}
-	}
-	
-	/*
-		Do some stuff to the mesh
-	*/
-
-	mesh_new->recalculateBoundingBox();
-
-	/*
-		Delete new mesh if it is empty
+		Replace the mesh
 	*/
 
-	if(mesh_new->getMeshBufferCount() == 0)
-	{
-		mesh_new->drop();
-		mesh_new = NULL;
-	}
+	replaceMesh(mesh_new);
 
-	/*
-		Replace the mesh
-	*/
+}
+#endif
 
+void MapBlock::replaceMesh(scene::SMesh *mesh_new)
+{
 	mesh_mutex.Lock();
 
 	//scene::SMesh *mesh_old = mesh[daynight_i];
@@ -835,41 +201,31 @@ void MapBlock::updateMesh(u32 daynight_ratio)
 	}
 
 	mesh_mutex.Unlock();
-	
-	//std::cout<<"added "<<fastfaces.getSize()<<" faces."<<std::endl;
 }
-
-/*void MapBlock::updateMeshes(s32 first_i)
-{
-	assert(first_i >= 0 && first_i <= DAYNIGHT_CACHE_COUNT);
-	updateMesh(first_i);
-	for(s32 i=0; i<DAYNIGHT_CACHE_COUNT; i++)
-	{
-		if(i == first_i)
-			continue;
-		updateMesh(i);
-	}
-}*/
-
+	
 #endif // !SERVER
 
 /*
 	Propagates sunlight down through the block.
 	Doesn't modify nodes that are not affected by sunlight.
 	
-	Returns false if sunlight at bottom block is invalid
+	Returns false if sunlight at bottom block is invalid.
+	Returns true if sunlight at bottom block is valid.
 	Returns true if bottom block doesn't exist.
 
 	If there is a block above, continues from it.
 	If there is no block above, assumes there is sunlight, unless
-	is_underground is set.
+	is_underground is set or highest node is water.
+
+	All sunlighted nodes are added to light_sources.
 
-	At the moment, all sunlighted nodes are added to light_sources.
-	- SUGG: This could be optimized
+	if remove_light==true, sets non-sunlighted nodes black.
 
-	Turns sunglighted mud into grass.
+	if black_air_left!=NULL, it is set to true if non-sunlighted
+	air is left in block.
 */
-bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
+bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
+		bool remove_light, bool *black_air_left)
 {
 	// Whether the sunlight at the top of the bottom block is valid
 	bool block_below_is_valid = true;
@@ -880,12 +236,13 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
 	{
 		for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 		{
+#if 1
 			bool no_sunlight = false;
 			bool no_top_block = false;
 			// Check if node above block has sunlight
 			try{
 				MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
-				if(n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
+				if(n.d == CONTENT_IGNORE || n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 				{
 					no_sunlight = true;
 				}
@@ -900,11 +257,36 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
 				{
 					no_sunlight = true;
 				}
-				
-				// NOTE: As of now, it just would make everything dark.
+				else
+				{
+					MapNode n = getNode(v3s16(x, MAP_BLOCKSIZE-1, z));
+					//if(n.d == CONTENT_WATER || n.d == CONTENT_WATERSOURCE)
+					if(content_features(n.d).sunlight_propagates == false)
+					{
+						no_sunlight = true;
+					}
+				}
+				// NOTE: As of now, this just would make everything dark.
 				// No sunlight here
 				//no_sunlight = true;
 			}
+#endif
+#if 0 // Doesn't work; nothing gets light.
+			bool no_sunlight = true;
+			bool no_top_block = false;
+			// Check if node above block has sunlight
+			try{
+				MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
+				if(n.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
+				{
+					no_sunlight = false;
+				}
+			}
+			catch(InvalidPositionException &e)
+			{
+				no_top_block = true;
+			}
+#endif
 
 			/*std::cout<<"("<<x<<","<<z<<"): "
 					<<"no_top_block="<<no_top_block
@@ -914,53 +296,82 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
 		
 			s16 y = MAP_BLOCKSIZE-1;
 			
-			if(no_sunlight == false)
+			// This makes difference to diminishing in water.
+			bool stopped_to_solid_object = false;
+			
+			u8 current_light = no_sunlight ? 0 : LIGHT_SUN;
+
+			for(; y >= 0; y--)
 			{
-				// Continue spreading sunlight downwards through transparent
-				// nodes
-				for(; y >= 0; y--)
+				v3s16 pos(x, y, z);
+				MapNode &n = getNodeRef(pos);
+				
+				if(current_light == 0)
 				{
-					v3s16 pos(x, y, z);
-					
-					MapNode &n = getNodeRef(pos);
-
-					if(n.sunlight_propagates())
-					{
-						n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
-
-						light_sources.insert(pos_relative + pos, true);
-					}
-					else
+					// Do nothing
+				}
+				else if(current_light == LIGHT_SUN && n.sunlight_propagates())
+				{
+					// Do nothing: Sunlight is continued
+				}
+				else if(n.light_propagates() == false)
+				{
+					/*// DEPRECATED TODO: REMOVE
+					if(grow_grass)
 					{
+						bool upper_is_air = false;
+						try
+						{
+							if(getNodeParent(pos+v3s16(0,1,0)).d == CONTENT_AIR)
+								upper_is_air = true;
+						}
+						catch(InvalidPositionException &e)
+						{
+						}
 						// Turn mud into grass
-						if(n.d == CONTENT_MUD)
+						if(upper_is_air && n.d == CONTENT_MUD
+								&& current_light == LIGHT_SUN)
 						{
 							n.d = CONTENT_GRASS;
 						}
+					}*/
 
-						// Sunlight goes no further
-						break;
-					}
+					// A solid object is on the way.
+					stopped_to_solid_object = true;
+					
+					// Light stops.
+					current_light = 0;
+				}
+				else
+				{
+					// Diminish light
+					current_light = diminish_light(current_light);
 				}
-			}
 
-			bool sunlight_should_go_down = (y==-1);
+				u8 old_light = n.getLight(LIGHTBANK_DAY);
 
-			// Fill rest with black (only transparent ones)
-			for(; y >= 0; y--){
-				v3s16 pos(x, y, z);
+				if(current_light > old_light || remove_light)
+				{
+					n.setLight(LIGHTBANK_DAY, current_light);
+				}
 				
-				MapNode &n = getNodeRef(pos);
-
-				if(n.light_propagates())
+				if(diminish_light(current_light) != 0)
 				{
-					n.setLight(LIGHTBANK_DAY, 0);
+					light_sources.insert(pos_relative + pos, true);
 				}
-				else{
-					break;
+
+				if(current_light == 0 && stopped_to_solid_object)
+				{
+					if(black_air_left)
+					{
+						*black_air_left = true;
+					}
 				}
 			}
 
+			// Whether or not the block below should see LIGHT_SUN
+			bool sunlight_should_go_down = (current_light == LIGHT_SUN);
+
 			/*
 				If the block below hasn't already been marked invalid:
 
@@ -997,62 +408,33 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
 	return block_below_is_valid;
 }
 
+
 void MapBlock::copyTo(VoxelManipulator &dst)
 {
 	v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
 	VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
 	
+	// Copy from data to VoxelManipulator
 	dst.copyFrom(data, data_area, v3s16(0,0,0),
 			getPosRelative(), data_size);
 }
 
-/*void getPseudoObjects(v3f origin, f32 max_d,
-		core::array<DistanceSortedObject> &dest)
+void MapBlock::copyFrom(VoxelManipulator &dst)
 {
-}*/
+	v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
+	VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
+	
+	// Copy from VoxelManipulator to data
+	dst.copyTo(data, data_area, v3s16(0,0,0),
+			getPosRelative(), data_size);
+}
+
 void MapBlock::stepObjects(float dtime, bool server, u32 daynight_ratio)
 {
 	/*
 		Step objects
 	*/
 	m_objects.step(dtime, server, daynight_ratio);
-	
-	/*
-		Spawn some objects at random.
-
-		Use dayNightDiffed() to approximate being near ground level
-	*/
-	if(m_spawn_timer < -999)
-	{
-		m_spawn_timer = 60;
-	}
-	if(dayNightDiffed() == true && getObjectCount() == 0)
-	{
-		m_spawn_timer -= dtime;
-		if(m_spawn_timer <= 0.0)
-		{
-			m_spawn_timer += myrand() % 300;
-			
-			v2s16 p2d(
-				(myrand()%(MAP_BLOCKSIZE-1))+0,
-				(myrand()%(MAP_BLOCKSIZE-1))+0
-			);
-
-			s16 y = getGroundLevel(p2d);
-			
-			if(y >= 0)
-			{
-				v3s16 p(p2d.X, y+1, p2d.Y);
-
-				if(getNode(p).d == CONTENT_AIR
-						&& getNode(p).getLightBlend(daynight_ratio) <= 11)
-				{
-					RatObject *obj = new RatObject(NULL, -1, intToFloat(p));
-					addObject(obj);
-				}
-			}
-		}
-	}
 
 	setChangedFlag();
 }
@@ -1114,7 +496,8 @@ s16 MapBlock::getGroundLevel(v2s16 p2d)
 		s16 y = MAP_BLOCKSIZE-1;
 		for(; y>=0; y--)
 		{
-			if(is_ground_content(getNodeRef(p2d.X, y, p2d.Y).d))
+			//if(is_ground_content(getNodeRef(p2d.X, y, p2d.Y).d))
+			if(content_features(getNodeRef(p2d.X, y, p2d.Y).d).walkable)
 			{
 				if(y == MAP_BLOCKSIZE-1)
 					return -2;
@@ -1191,13 +574,13 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 		
 		if(version >= 10)
 		{
-			// Get and compress pressure
-			SharedBuffer<u8> pressuredata(nodecount);
+			// Get and compress param2
+			SharedBuffer<u8> param2data(nodecount);
 			for(u32 i=0; i<nodecount; i++)
 			{
-				pressuredata[i] = data[i].pressure;
+				param2data[i] = data[i].param2;
 			}
-			compress(pressuredata, os, version);
+			compress(param2data, os, version);
 		}
 	}
 	// All other versions (newest)
@@ -1206,9 +589,16 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 		// First byte
 		u8 flags = 0;
 		if(is_underground)
-			flags |= 1;
+			flags |= 0x01;
 		if(m_day_night_differs)
-			flags |= 2;
+			flags |= 0x02;
+		if(m_lighting_expired)
+			flags |= 0x04;
+		if(version >= 18)
+		{
+			if(m_generated == false)
+				flags |= 0x08;
+		}
 		os.write((char*)&flags, 1);
 
 		u32 nodecount = MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE;
@@ -1231,10 +621,10 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 			databuf[i+nodecount] = data[i].param;
 		}
 
-		// Get pressure
+		// Get param2
 		for(u32 i=0; i<nodecount; i++)
 		{
-			databuf[i+nodecount*2] = data[i].pressure;
+			databuf[i+nodecount*2] = data[i].param2;
 		}
 
 		/*
@@ -1242,6 +632,34 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 		*/
 
 		compress(databuf, os, version);
+		
+		/*
+			NodeMetadata
+		*/
+		if(version >= 14)
+		{
+			if(version <= 15)
+			{
+				try{
+					std::ostringstream oss(std::ios_base::binary);
+					m_node_metadata.serialize(oss);
+					os<<serializeString(oss.str());
+				}
+				// This will happen if the string is longer than 65535
+				catch(SerializationError &e)
+				{
+					// Use an empty string
+					os<<serializeString("");
+				}
+			}
+			else
+			{
+				std::ostringstream oss(std::ios_base::binary);
+				m_node_metadata.serialize(oss);
+				compressZlib(oss.str(), os);
+				//os<<serializeLongString(oss.str());
+			}
+		}
 	}
 }
 
@@ -1250,6 +668,18 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 	if(!ser_ver_supported(version))
 		throw VersionMismatchException("ERROR: MapBlock format not supported");
 
+	// These have no lighting info
+	if(version <= 1)
+	{
+		setLightingExpired(true);
+	}
+
+	// These have no "generated" field
+	if(version < 18)
+	{
+		m_generated = true;
+	}
+
 	// These have no compression
 	if(version <= 3 || version == 5 || version == 6)
 	{
@@ -1308,7 +738,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 	
 		if(version >= 10)
 		{
-			// Uncompress and set pressure data
+			// Uncompress and set param2 data
 			std::ostringstream os(std::ios_base::binary);
 			decompress(is, os, version);
 			std::string s = os.str();
@@ -1317,7 +747,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 						("MapBlock::deSerialize: invalid format");
 			for(u32 i=0; i<s.size(); i++)
 			{
-				data[i].pressure = s[i];
+				data[i].param2 = s[i];
 			}
 		}
 	}
@@ -1328,8 +758,11 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 
 		u8 flags;
 		is.read((char*)&flags, 1);
-		is_underground = (flags & 1) ? true : false;
-		m_day_night_differs = (flags & 2) ? true : false;
+		is_underground = (flags & 0x01) ? true : false;
+		m_day_night_differs = (flags & 0x02) ? true : false;
+		m_lighting_expired = (flags & 0x04) ? true : false;
+		if(version >= 18)
+			m_generated = (flags & 0x08) ? false : true;
 
 		// Uncompress data
 		std::ostringstream os(std::ios_base::binary);
@@ -1337,7 +770,8 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 		std::string s = os.str();
 		if(s.size() != nodecount*3)
 			throw SerializationError
-					("MapBlock::deSerialize: invalid format");
+					("MapBlock::deSerialize: decompress resulted in size"
+					" other than nodecount*3");
 
 		// Set contents
 		for(u32 i=0; i<nodecount; i++)
@@ -1349,11 +783,111 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 		{
 			data[i].param = s[i+nodecount];
 		}
-		// Set pressure
+		// Set param2
 		for(u32 i=0; i<nodecount; i++)
 		{
-			data[i].pressure = s[i+nodecount*2];
+			data[i].param2 = s[i+nodecount*2];
 		}
+		
+		/*
+			NodeMetadata
+		*/
+		if(version >= 14)
+		{
+			// Ignore errors
+			try{
+				if(version <= 15)
+				{
+					std::string data = deSerializeString(is);
+					std::istringstream iss(data, std::ios_base::binary);
+					m_node_metadata.deSerialize(iss);
+				}
+				else
+				{
+					//std::string data = deSerializeLongString(is);
+					std::ostringstream oss(std::ios_base::binary);
+					decompressZlib(is, oss);
+					std::istringstream iss(oss.str(), std::ios_base::binary);
+					m_node_metadata.deSerialize(iss);
+				}
+			}
+			catch(SerializationError &e)
+			{
+				dstream<<"WARNING: MapBlock::deSerialize(): Ignoring an error"
+						<<" while deserializing node metadata"<<std::endl;
+			}
+		}
+	}
+	
+	/*
+		Translate nodes as specified in the translate_to fields of
+		node features
+
+		NOTE: This isn't really used. Should it be removed?
+	*/
+	for(u32 i=0; i<MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE; i++)
+	{
+		MapNode &n = data[i];
+
+		MapNode *translate_to = content_features(n.d).translate_to;
+		if(translate_to)
+		{
+			dstream<<"MapBlock: WARNING: Translating node "<<n.d<<" to "
+					<<translate_to->d<<std::endl;
+			n = *translate_to;
+		}
+	}
+}
+
+void MapBlock::serializeDiskExtra(std::ostream &os, u8 version)
+{
+	// Versions up from 9 have block objects.
+	if(version >= 9)
+	{
+		//serializeObjects(os, version); // DEPRECATED
+		// count=0
+		writeU16(os, 0);
+	}
+	
+	// Versions up from 15 have static objects.
+	if(version >= 15)
+	{
+		m_static_objects.serialize(os);
+	}
+
+	// Timestamp
+	if(version >= 17)
+	{
+		writeU32(os, getTimestamp());
+	}
+}
+
+void MapBlock::deSerializeDiskExtra(std::istream &is, u8 version)
+{
+	/*
+		Versions up from 9 have block objects.
+	*/
+	if(version >= 9)
+	{
+		updateObjects(is, version, NULL, 0);
+	}
+
+	/*
+		Versions up from 15 have static objects.
+	*/
+	if(version >= 15)
+	{
+		m_static_objects.deSerialize(is);
+	}
+		
+	// Timestamp
+	if(version >= 17)
+	{
+		setTimestamp(readU32(is));
+	}
+	else
+	{
+		setTimestamp(BLOCK_TIMESTAMP_UNDEFINED);
 	}
 }