extended content-type range

27 files changed, 428 insertions, 318 deletions

diff --git a/src/collision.cpp b/src/collision.cpp
index 01d546284..3d322cf0c 100644
--- a/src/collision.cpp
+++ b/src/collision.cpp
@@ -78,7 +78,8 @@ collisionMoveResult collisionMoveSimple(Map *map, f32 pos_max_d,
 	{
 		try{
 			// Object collides into walkable nodes
-			if(content_walkable(map->getNode(v3s16(x,y,z)).d) == false)
+			MapNode n = map->getNode(v3s16(x,y,z));
+			if(content_features(n).walkable == false)
 				continue;
 		}
 		catch(InvalidPositionException &e)
diff --git a/src/content_craft.cpp b/src/content_craft.cpp
index 32d2e6d48..e4573a211 100644
--- a/src/content_craft.cpp
+++ b/src/content_craft.cpp
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "inventory.h"
 #include "content_mapnode.h"
 #include "player.h"
+#include "mapnode.h" // For content_t
 
 /*
 	items: actually *items[9]
@@ -347,7 +348,7 @@ void craft_set_creative_inventory(Player *player)
 	*/
 	
 	// CONTENT_IGNORE-terminated list
-	u8 material_items[] = {
+	content_t material_items[] = {
 		CONTENT_TORCH,
 		CONTENT_COBBLE,
 		CONTENT_MUD,
@@ -366,7 +367,7 @@ void craft_set_creative_inventory(Player *player)
 		CONTENT_IGNORE
 	};
 	
-	u8 *mip = material_items;
+	content_t *mip = material_items;
 	for(u16 i=0; i<PLAYER_INVENTORY_SIZE; i++)
 	{
 		if(*mip == CONTENT_IGNORE)
diff --git a/src/content_inventory.cpp b/src/content_inventory.cpp
index ac48a6195..78fa6f3d1 100644
--- a/src/content_inventory.cpp
+++ b/src/content_inventory.cpp
@@ -23,7 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 //#include "serverobject.h"
 #include "content_sao.h"
 
-bool item_material_is_cookable(u8 content)
+bool item_material_is_cookable(content_t content)
 {
 	if(content == CONTENT_TREE)
 		return true;
@@ -34,7 +34,7 @@ bool item_material_is_cookable(u8 content)
 	return false;
 }
 
-InventoryItem* item_material_create_cook_result(u8 content)
+InventoryItem* item_material_create_cook_result(content_t content)
 {
 	if(content == CONTENT_TREE)
 		return new CraftItem("lump_of_coal", 1);
diff --git a/src/content_inventory.h b/src/content_inventory.h
index 54aa2151a..0f410128b 100644
--- a/src/content_inventory.h
+++ b/src/content_inventory.h
@@ -22,13 +22,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "common_irrlicht.h" // For u8, s16
 #include <string>
+#include "mapnode.h" // For content_t
 
 class InventoryItem;
 class ServerActiveObject;
 class ServerEnvironment;
 
-bool           item_material_is_cookable(u8 content);
-InventoryItem* item_material_create_cook_result(u8 content);
+bool           item_material_is_cookable(content_t content);
+InventoryItem* item_material_create_cook_result(content_t content);
 
 std::string         item_craft_get_image_name(const std::string &subname);
 ServerActiveObject* item_craft_create_object(const std::string &subname,
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index bdc9baa2a..38bc9620c 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -199,7 +199,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add torches to mesh
 		*/
-		if(n.d == CONTENT_TORCH)
+		if(n.getContent() == CONTENT_TORCH)
 		{
 			video::SColor c(255,255,255,255);
 
@@ -212,7 +212,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
 			};
 
-			v3s16 dir = unpackDir(n.dir);
+			v3s16 dir = unpackDir(n.param2);
 
 			for(s32 i=0; i<4; i++)
 			{
@@ -262,7 +262,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Signs on walls
 		*/
-		else if(n.d == CONTENT_SIGN_WALL)
+		else if(n.getContent() == CONTENT_SIGN_WALL)
 		{
 			u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
 			video::SColor c(255,l,l,l);
@@ -277,7 +277,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c, 0,0),
 			};
 
-			v3s16 dir = unpackDir(n.dir);
+			v3s16 dir = unpackDir(n.param2);
 
 			for(s32 i=0; i<4; i++)
 			{
@@ -317,16 +317,16 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add flowing water to mesh
 		*/
-		else if(n.d == CONTENT_WATER)
+		else if(n.getContent() == CONTENT_WATER)
 		{
 			bool top_is_water = false;
 			MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
-			if(ntop.d == CONTENT_WATER || ntop.d == CONTENT_WATERSOURCE)
+			if(ntop.getContent() == CONTENT_WATER || ntop.getContent() == CONTENT_WATERSOURCE)
 				top_is_water = true;
 			
 			u8 l = 0;
 			// Use the light of the node on top if possible
-			if(content_features(ntop.d).param_type == CPT_LIGHT)
+			if(content_features(ntop).param_type == CPT_LIGHT)
 				l = decode_light(ntop.getLightBlend(data->m_daynight_ratio));
 			// Otherwise use the light of this node (the water)
 			else
@@ -336,7 +336,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			// Neighbor water levels (key = relative position)
 			// Includes current node
 			core::map<v3s16, f32> neighbor_levels;
-			core::map<v3s16, u8> neighbor_contents;
+			core::map<v3s16, content_t> neighbor_contents;
 			core::map<v3s16, u8> neighbor_flags;
 			const u8 neighborflag_top_is_water = 0x01;
 			v3s16 neighbor_dirs[9] = {
@@ -358,13 +358,13 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				// Check neighbor
 				v3s16 p2 = p + neighbor_dirs[i];
 				MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
-				if(n2.d != CONTENT_IGNORE)
+				if(n2.getContent() != CONTENT_IGNORE)
 				{
-					content = n2.d;
+					content = n2.getContent();
 
-					if(n2.d == CONTENT_WATERSOURCE)
+					if(n2.getContent() == CONTENT_WATERSOURCE)
 						level = (-0.5+node_water_level) * BS;
-					else if(n2.d == CONTENT_WATER)
+					else if(n2.getContent() == CONTENT_WATER)
 						level = (-0.5 + ((float)n2.param2 + 0.5) / 8.0
 								* node_water_level) * BS;
 
@@ -373,7 +373,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 					//       doesn't exist
 					p2.Y += 1;
 					n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
-					if(n2.d == CONTENT_WATERSOURCE || n2.d == CONTENT_WATER)
+					if(n2.getContent() == CONTENT_WATERSOURCE || n2.getContent() == CONTENT_WATER)
 						flags |= neighborflag_top_is_water;
 				}
 				
@@ -581,14 +581,14 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add water sources to mesh if using new style
 		*/
-		else if(n.d == CONTENT_WATERSOURCE && new_style_water)
+		else if(n.getContent() == CONTENT_WATERSOURCE && new_style_water)
 		{
 			//bool top_is_water = false;
 			bool top_is_air = false;
 			MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
-			/*if(n.d == CONTENT_WATER || n.d == CONTENT_WATERSOURCE)
+			/*if(n.getContent() == CONTENT_WATER || n.getContent() == CONTENT_WATERSOURCE)
 				top_is_water = true;*/
-			if(n.d == CONTENT_AIR)
+			if(n.getContent() == CONTENT_AIR)
 				top_is_air = true;
 			
 			/*if(top_is_water == true)
@@ -628,7 +628,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add leaves if using new style
 		*/
-		else if(n.d == CONTENT_LEAVES && new_style_leaves)
+		else if(n.getContent() == CONTENT_LEAVES && new_style_leaves)
 		{
 			/*u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));*/
 			u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
@@ -696,7 +696,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add glass
 		*/
-		else if(n.d == CONTENT_GLASS)
+		else if(n.getContent() == CONTENT_GLASS)
 		{
 			u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 			video::SColor c(255,l,l,l);
@@ -759,7 +759,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add fence
 		*/
-		else if(n.d == CONTENT_FENCE)
+		else if(n.getContent() == CONTENT_FENCE)
 		{
 			u8 l = decode_light(undiminish_light(n.getLightBlend(data->m_daynight_ratio)));
 			video::SColor c(255,l,l,l);
@@ -785,7 +785,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			v3s16 p2 = p;
 			p2.X++;
 			MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
-			if(n2.d == CONTENT_FENCE)
+			if(n2.getContent() == CONTENT_FENCE)
 			{
 				pos = intToFloat(p+blockpos_nodes, BS);
 				pos.X += BS/2;
@@ -811,7 +811,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 			p2 = p;
 			p2.Z++;
 			n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
-			if(n2.d == CONTENT_FENCE)
+			if(n2.getContent() == CONTENT_FENCE)
 			{
 				pos = intToFloat(p+blockpos_nodes, BS);
 				pos.Z += BS/2;
@@ -838,7 +838,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Add stones with minerals if stone is invisible
 		*/
-		else if(n.d == CONTENT_STONE && invisible_stone && n.getMineral() != MINERAL_NONE)
+		else if(n.getContent() == CONTENT_STONE && invisible_stone && n.getMineral() != MINERAL_NONE)
 		{
 			for(u32 j=0; j<6; j++)
 			{
@@ -846,7 +846,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				v3s16 dir = g_6dirs[j];
 				/*u8 l = 0;
 				MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + dir);
-				if(content_features(n2.d).param_type == CPT_LIGHT)
+				if(content_features(n2).param_type == CPT_LIGHT)
 					l = decode_light(n2.getLightBlend(data->m_daynight_ratio));
 				else
 					l = 255;*/
diff --git a/src/content_mapnode.cpp b/src/content_mapnode.cpp
index d82ccc5c9..e2aed2458 100644
--- a/src/content_mapnode.cpp
+++ b/src/content_mapnode.cpp
@@ -31,6 +31,59 @@ void setStoneLikeDiggingProperties(DiggingPropertiesList &list, float toughness)
 void setDirtLikeDiggingProperties(DiggingPropertiesList &list, float toughness);
 void setWoodLikeDiggingProperties(DiggingPropertiesList &list, float toughness);
 
+content_t trans_table_19[][2] = {
+	{CONTENT_GRASS, 1},
+	{CONTENT_TREE, 4},
+	{CONTENT_LEAVES, 5},
+	{CONTENT_GRASS_FOOTSTEPS, 6},
+	{CONTENT_MESE, 7},
+	{CONTENT_MUD, 8},
+	{CONTENT_CLOUD, 10},
+	{CONTENT_COALSTONE, 11},
+	{CONTENT_WOOD, 12},
+	{CONTENT_SAND, 13},
+	{CONTENT_COBBLE, 18},
+	{CONTENT_STEEL, 19},
+	{CONTENT_GLASS, 20},
+	{CONTENT_MOSSYCOBBLE, 22},
+	{CONTENT_GRAVEL, 23},
+};
+
+MapNode mapnode_translate_from_internal(MapNode n_from, u8 version)
+{
+	MapNode result = n_from;
+	if(version <= 19)
+	{
+		content_t c_from = n_from.getContent();
+		for(u32 i=0; i<sizeof(trans_table_19)/sizeof(trans_table_19[0]); i++)
+		{
+			if(trans_table_19[i][0] == c_from)
+			{
+				result.setContent(trans_table_19[i][1]);
+				break;
+			}
+		}
+	}
+	return result;
+}
+MapNode mapnode_translate_to_internal(MapNode n_from, u8 version)
+{
+	MapNode result = n_from;
+	if(version <= 19)
+	{
+		content_t c_from = n_from.getContent();
+		for(u32 i=0; i<sizeof(trans_table_19)/sizeof(trans_table_19[0]); i++)
+		{
+			if(trans_table_19[i][1] == c_from)
+			{
+				result.setContent(trans_table_19[i][0]);
+				break;
+			}
+		}
+	}
+	return result;
+}
+
 void content_mapnode_init()
 {
 	// Read some settings
@@ -38,7 +91,7 @@ void content_mapnode_init()
 	bool new_style_leaves = g_settings.getBool("new_style_leaves");
 	bool invisible_stone = g_settings.getBool("invisible_stone");
 
-	u8 i;
+	content_t i;
 	ContentFeatures *f = NULL;
 
 	i = CONTENT_STONE;
diff --git a/src/content_mapnode.h b/src/content_mapnode.h
index e314807f9..b484cb225 100644
--- a/src/content_mapnode.h
+++ b/src/content_mapnode.h
@@ -20,36 +20,48 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef CONTENT_MAPNODE_HEADER
 #define CONTENT_MAPNODE_HEADER
 
+#include "mapnode.h"
+
 void content_mapnode_init();
 
+MapNode mapnode_translate_from_internal(MapNode n_from, u8 version);
+MapNode mapnode_translate_to_internal(MapNode n_from, u8 version);
+
 /*
 	Node content type IDs
+	Ranges:
 */
+
+// 0x000...0x07f (0...127): param2 is fully usable
+// 126 and 127 are reserved.
+// Use these sparingly, only when the extra space in param2 is needed.
 #define CONTENT_STONE 0
-#define CONTENT_GRASS 1
 #define CONTENT_WATER 2
 #define CONTENT_TORCH 3
-#define CONTENT_TREE 4
-#define CONTENT_LEAVES 5
-#define CONTENT_GRASS_FOOTSTEPS 6
-#define CONTENT_MESE 7
-#define CONTENT_MUD 8
 #define CONTENT_WATERSOURCE 9
-// Pretty much useless, clouds won't be drawn this way
-#define CONTENT_CLOUD 10
-#define CONTENT_COALSTONE 11
-#define CONTENT_WOOD 12
-#define CONTENT_SAND 13
 #define CONTENT_SIGN_WALL 14
 #define CONTENT_CHEST 15
 #define CONTENT_FURNACE 16
 //#define CONTENT_WORKBENCH 17
-#define CONTENT_COBBLE 18
-#define CONTENT_STEEL 19
-#define CONTENT_GLASS 20
 #define CONTENT_FENCE 21
-#define CONTENT_MOSSYCOBBLE 22
-#define CONTENT_GRAVEL 23
+
+// 0x800...0xfff: param2 higher 4 bytes are not usable
+#define CONTENT_GRASS 0x800 //1
+#define CONTENT_TREE 0x801 //4
+#define CONTENT_LEAVES 0x802 //5
+#define CONTENT_GRASS_FOOTSTEPS 0x803 //6
+#define CONTENT_MESE 0x804 //7
+#define CONTENT_MUD 0x805 //8
+// Pretty much useless, clouds won't be drawn this way
+#define CONTENT_CLOUD 0x806 //10
+#define CONTENT_COALSTONE 0x807 //11
+#define CONTENT_WOOD 0x808 //12
+#define CONTENT_SAND 0x809 //13
+#define CONTENT_COBBLE 0x80a //18
+#define CONTENT_STEEL 0x80b //19
+#define CONTENT_GLASS 0x80c //20
+#define CONTENT_MOSSYCOBBLE 0x80d //22
+#define CONTENT_GRAVEL 0x80e //23
 
 #endif
 
diff --git a/src/environment.cpp b/src/environment.cpp
index d55aa38d1..b16ee59ab 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -543,11 +543,11 @@ void spawnRandomObjects(MapBlock *block)
 		{
 			v3s16 p(x0,y0,z0);
 			MapNode n = block->getNodeNoEx(p);
-			if(n.d == CONTENT_IGNORE)
+			if(n.getContent() == CONTENT_IGNORE)
 				continue;
-			if(content_features(n.d).liquid_type != LIQUID_NONE)
+			if(content_features(n).liquid_type != LIQUID_NONE)
 				continue;
-			if(content_features(n.d).walkable)
+			if(content_features(n).walkable)
 			{
 				last_node_walkable = true;
 				continue;
@@ -555,7 +555,7 @@ void spawnRandomObjects(MapBlock *block)
 			if(last_node_walkable)
 			{
 				// If block contains light information
-				if(content_features(n.d).param_type == CPT_LIGHT)
+				if(content_features(n).param_type == CPT_LIGHT)
 				{
 					if(n.getLight(LIGHTBANK_DAY) <= 5)
 					{
@@ -624,15 +624,15 @@ void ServerEnvironment::activateBlock(MapBlock *block, u32 additional_dtime)
 #if 1
 		// Test something:
 		// Convert all mud under proper day lighting to grass
-		if(n.d == CONTENT_MUD)
+		if(n.getContent() == CONTENT_MUD)
 		{
 			if(dtime_s > 300)
 			{
 				MapNode n_top = block->getNodeNoEx(p0+v3s16(0,1,0));
-				if(content_features(n_top.d).air_equivalent &&
+				if(content_features(n_top).air_equivalent &&
 						n_top.getLight(LIGHTBANK_DAY) >= 13)
 				{
-					n.d = CONTENT_GRASS;
+					n.setContent(CONTENT_GRASS);
 					m_map->addNodeWithEvent(p, n);
 				}
 			}
@@ -686,9 +686,9 @@ void ServerEnvironment::step(float dtime)
 			v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
 			try{
 				MapNode n = m_map->getNode(bottompos);
-				if(n.d == CONTENT_GRASS)
+				if(n.getContent() == CONTENT_GRASS)
 				{
-					n.d = CONTENT_GRASS_FOOTSTEPS;
+					n.setContent(CONTENT_GRASS_FOOTSTEPS);
 					m_map->setNode(bottompos, n);
 				}
 			}
@@ -859,15 +859,15 @@ void ServerEnvironment::step(float dtime)
 					Test something:
 					Convert mud under proper lighting to grass
 				*/
-				if(n.d == CONTENT_MUD)
+				if(n.getContent() == CONTENT_MUD)
 				{
 					if(myrand()%20 == 0)
 					{
 						MapNode n_top = block->getNodeNoEx(p0+v3s16(0,1,0));
-						if(content_features(n_top.d).air_equivalent &&
+						if(content_features(n_top).air_equivalent &&
 								n_top.getLightBlend(getDayNightRatio()) >= 13)
 						{
-							n.d = CONTENT_GRASS;
+							n.setContent(CONTENT_GRASS);
 							m_map->addNodeWithEvent(p, n);
 						}
 					}
@@ -875,15 +875,15 @@ void ServerEnvironment::step(float dtime)
 				/*
 					Convert grass into mud if under something else than air
 				*/
-				else if(n.d == CONTENT_GRASS)
+				else if(n.getContent() == CONTENT_GRASS)
 				{
 					//if(myrand()%20 == 0)
 					{
 						MapNode n_top = block->getNodeNoEx(p0+v3s16(0,1,0));
-						if(n_top.d != CONTENT_AIR
-								&& n_top.d != CONTENT_IGNORE)
+						if(n_top.getContent() != CONTENT_AIR
+								&& n_top.getContent() != CONTENT_IGNORE)
 						{
-							n.d = CONTENT_MUD;
+							n.setContent(CONTENT_MUD);
 							m_map->addNodeWithEvent(p, n);
 						}
 					}
@@ -1632,9 +1632,9 @@ void ClientEnvironment::step(float dtime)
 			v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
 			try{
 				MapNode n = m_map->getNode(bottompos);
-				if(n.d == CONTENT_GRASS)
+				if(n.getContent() == CONTENT_GRASS)
 				{
-					n.d = CONTENT_GRASS_FOOTSTEPS;
+					n.setContent(CONTENT_GRASS_FOOTSTEPS);
 					m_map->setNode(bottompos, n);
 					// Update mesh on client
 					if(m_map->mapType() == MAPTYPE_CLIENT)
@@ -1873,7 +1873,7 @@ void ClientEnvironment::drawPostFx(video::IVideoDriver* driver, v3f camera_pos)
 	v3f pos_f = camera_pos;
 	v3s16 p_nodes = floatToInt(pos_f, BS);
 	MapNode n = m_map->getNodeNoEx(p_nodes);
-	if(n.d == CONTENT_WATER || n.d == CONTENT_WATERSOURCE)
+	if(n.getContent() == CONTENT_WATER || n.getContent() == CONTENT_WATERSOURCE)
 	{
 		v2u32 ss = driver->getScreenSize();
 		core::rect<s32> rect(0,0, ss.X, ss.Y);
diff --git a/src/game.cpp b/src/game.cpp
index faadd0fe7..7e2ee44fc 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -417,7 +417,7 @@ void getPointedNode(Client *client, v3f player_position,
 		try
 		{
 			n = client->getNode(v3s16(x,y,z));
-			if(content_pointable(n.d) == false)
+			if(content_pointable(n.getContent()) == false)
 				continue;
 		}
 		catch(InvalidPositionException &e)
@@ -442,9 +442,9 @@ void getPointedNode(Client *client, v3f player_position,
 		/*
 			Meta-objects
 		*/
-		if(n.d == CONTENT_TORCH)
+		if(n.getContent() == CONTENT_TORCH)
 		{
-			v3s16 dir = unpackDir(n.dir);
+			v3s16 dir = unpackDir(n.param2);
 			v3f dir_f = v3f(dir.X, dir.Y, dir.Z);
 			dir_f *= BS/2 - BS/6 - BS/20;
 			v3f cpf = npf + dir_f;
@@ -489,9 +489,9 @@ void getPointedNode(Client *client, v3f player_position,
 				}
 			}
 		}
-		else if(n.d == CONTENT_SIGN_WALL)
+		else if(n.getContent() == CONTENT_SIGN_WALL)
 		{
-			v3s16 dir = unpackDir(n.dir);
+			v3s16 dir = unpackDir(n.param2);
 			v3f dir_f = v3f(dir.X, dir.Y, dir.Z);
 			dir_f *= BS/2 - BS/6 - BS/20;
 			v3f cpf = npf + dir_f;
@@ -1722,7 +1722,7 @@ void the_game(
 					}
 
 					// Get digging properties for material and tool
-					u8 material = n.d;
+					content_t material = n.getContent();
 					DiggingProperties prop =
 							getDiggingProperties(material, toolname);
 					
diff --git a/src/inventory.cpp b/src/inventory.cpp
index fec51a759..7ef7f0138 100644
--- a/src/inventory.cpp
+++ b/src/inventory.cpp
@@ -61,7 +61,7 @@ InventoryItem* InventoryItem::deSerialize(std::istream &is)
 		is>>material;
 		u16 count;
 		is>>count;
-		if(material > 255)
+		if(material > MAX_CONTENT)
 			throw SerializationError("Too large material number");
 		return new MaterialItem(material, count);
 	}
diff --git a/src/inventory.h b/src/inventory.h
index 07d81a3f7..5c64f89bb 100644
--- a/src/inventory.h
+++ b/src/inventory.h
@@ -30,8 +30,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "common_irrlicht.h"
 #include "debug.h"
 #include "mapblockobject.h"
-// For g_materials
-#include "main.h"
+#include "main.h" // For g_materials
+#include "mapnode.h" // For content_t
 
 #define QUANTITY_ITEM_MAX_COUNT 99
 
@@ -113,7 +113,7 @@ protected:
 class MaterialItem : public InventoryItem
 {
 public:
-	MaterialItem(u8 content, u16 count):
+	MaterialItem(content_t content, u16 count):
 		InventoryItem(count)
 	{
 		m_content = content;
@@ -175,12 +175,12 @@ public:
 	/*
 		Special methods
 	*/
-	u8 getMaterial()
+	content_t getMaterial()
 	{
 		return m_content;
 	}
 private:
-	u8 m_content;
+	content_t m_content;
 };
 
 //TODO: Remove
diff --git a/src/main.cpp b/src/main.cpp
index 698c5fc71..5aff62bf2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -54,6 +54,24 @@ A list of "active blocks" in which stuff happens. (+=done)
 	  	+ This was left to be done by the old system and it sends only the

 		  nearest ones.

 

+Vim conversion regexpes for moving to extended content type storage:

+%s/\(\.\|->\)d \([!=]=\)/\1getContent() \2/g

+%s/content_features(\([^.]*\)\.d)/content_features(\1)/g

+%s/\(\.\|->\)d = \([^;]*\);/\1setContent(\2);/g

+%s/\(getNodeNoExNoEmerge([^)]*)\)\.d/\1.getContent()/g

+%s/\(getNodeNoExNoEmerge(.*)\)\.d/\1.getContent()/g

+%s/\.d;/.getContent();/g

+%s/\(content_liquid\|content_flowing_liquid\|make_liquid_flowing\|content_pointable\)(\([^.]*\).d)/\1(\2.getContent())/g

+Other things to note:

+- node.d = node.param0 (only in raw serialization; use getContent() otherwise)

+- node.param = node.param1

+- node.dir = node.param2

+- content_walkable(node.d) etc should be changed to

+  content_features(node).walkable etc

+- Also check for lines that store the result of getContent to a 8-bit

+  variable and fix them (result of getContent() must be stored in

+  content_t, which is 16-bit)

+

 Old, wild and random suggestions that probably won't be done:

 -------------------------------------------------------------

 

@@ -337,7 +355,7 @@ TODO: Restart irrlicht completely when coming back to main menu from game.
 

 TODO: Merge bahamada's audio stuff (clean patch available)

 

-TODO: Merge key configuration menu (no clean patch available)

+TODO: Move content_features to mapnode_content_features.{h,cpp} or so

 

 Making it more portable:

 ------------------------

diff --git a/src/map.cpp b/src/map.cpp
index 2a3e9f760..dd32e55ba 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -630,9 +630,9 @@ s16 Map::propagateSunlight(v3s16 start,
 		else
 		{
 			/*// Turn mud into grass
-			if(n.d == CONTENT_MUD)
+			if(n.getContent() == CONTENT_MUD)
 			{
-				n.d = CONTENT_GRASS;
+				n.setContent(CONTENT_GRASS);
 				block->setNode(relpos, n);
 				modified_blocks.insert(blockpos, block);
 			}*/
@@ -920,15 +920,15 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 	/*
 		If the new node is solid and there is grass below, change it to mud
 	*/
-	if(content_features(n.d).walkable == true)
+	if(content_features(n).walkable == true)
 	{
 		try{
 			MapNode bottomnode = getNode(bottompos);
 
-			if(bottomnode.d == CONTENT_GRASS
-					|| bottomnode.d == CONTENT_GRASS_FOOTSTEPS)
+			if(bottomnode.getContent() == CONTENT_GRASS
+					|| bottomnode.getContent() == CONTENT_GRASS_FOOTSTEPS)
 			{
-				bottomnode.d = CONTENT_MUD;
+				bottomnode.setContent(CONTENT_MUD);
 				setNode(bottompos, bottomnode);
 			}
 		}
@@ -943,9 +943,9 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 		If the new node is mud and it is under sunlight, change it
 		to grass
 	*/
-	if(n.d == CONTENT_MUD && node_under_sunlight)
+	if(n.getContent() == CONTENT_MUD && node_under_sunlight)
 	{
-		n.d = CONTENT_GRASS;
+		n.setContent(CONTENT_GRASS);
 	}
 #endif
 
@@ -986,7 +986,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 		If node lets sunlight through and is under sunlight, it has
 		sunlight too.
 	*/
-	if(node_under_sunlight && content_features(n.d).sunlight_propagates)
+	if(node_under_sunlight && content_features(n).sunlight_propagates)
 	{
 		n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 	}
@@ -1001,7 +1001,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 		Add intial metadata
 	*/
 
-	NodeMetadata *meta_proto = content_features(n.d).initial_metadata;
+	NodeMetadata *meta_proto = content_features(n).initial_metadata;
 	if(meta_proto)
 	{
 		NodeMetadata *meta = meta_proto->clone();
@@ -1015,7 +1015,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 		TODO: This could be optimized by mass-unlighting instead
 			  of looping
 	*/
-	if(node_under_sunlight && !content_features(n.d).sunlight_propagates)
+	if(node_under_sunlight && !content_features(n).sunlight_propagates)
 	{
 		s16 y = p.Y - 1;
 		for(;; y--){
@@ -1086,7 +1086,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 		v3s16 p2 = p + dirs[i];
 
 		MapNode n2 = getNode(p2);
-		if(content_liquid(n2.d))
+		if(content_liquid(n2.getContent()))
 		{
 			m_transforming_liquid.push_back(p2);
 		}
@@ -1111,7 +1111,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
 	v3s16 toppos = p + v3s16(0,1,0);
 
 	// Node will be replaced with this
-	u8 replace_material = CONTENT_AIR;
+	content_t replace_material = CONTENT_AIR;
 
 	/*
 		If there is a node at top and it doesn't have sunlight,
@@ -1158,7 +1158,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
 	*/
 
 	MapNode n;
-	n.d = replace_material;
+	n.setContent(replace_material);
 	setNode(p, n);
 
 	for(s32 i=0; i<2; i++)
@@ -1258,7 +1258,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
 		v3s16 p2 = p + dirs[i];
 
 		MapNode n2 = getNode(p2);
-		if(content_liquid(n2.d))
+		if(content_liquid(n2.getContent()))
 		{
 			m_transforming_liquid.push_back(p2);
 		}
@@ -1559,17 +1559,17 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 		MapNode n0 = getNodeNoEx(p0);
 
 		// Don't deal with non-liquids
-		if(content_liquid(n0.d) == false)
+		if(content_liquid(n0.getContent()) == false)
 			continue;
 
-		bool is_source = !content_flowing_liquid(n0.d);
+		bool is_source = !content_flowing_liquid(n0.getContent());
 
 		u8 liquid_level = 8;
 		if(is_source == false)
 			liquid_level = n0.param2 & 0x0f;
 
 		// Turn possible source into non-source
-		u8 nonsource_c = make_liquid_flowing(n0.d);
+		u8 nonsource_c = make_liquid_flowing(n0.getContent());
 
 		/*
 			If not source, check that some node flows into this one
@@ -1593,9 +1593,9 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 				v3s16 p2 = p0 + dirs_from[i];
 				MapNode n2 = getNodeNoEx(p2);
 
-				if(content_liquid(n2.d))
+				if(content_liquid(n2.getContent()))
 				{
-					u8 n2_nonsource_c = make_liquid_flowing(n2.d);
+					u8 n2_nonsource_c = make_liquid_flowing(n2.getContent());
 					// Check that the liquids are the same type
 					if(n2_nonsource_c != nonsource_c)
 					{
@@ -1603,7 +1603,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 								" collide"<<std::endl;
 						continue;
 					}
-					bool n2_is_source = !content_flowing_liquid(n2.d);
+					bool n2_is_source = !content_flowing_liquid(n2.getContent());
 					s8 n2_liquid_level = 8;
 					if(n2_is_source == false)
 						n2_liquid_level = n2.param2 & 0x07;
@@ -1636,7 +1636,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 				if(new_liquid_level_max == -1)
 				{
 					// Remove water alltoghether
-					n0.d = CONTENT_AIR;
+					n0.setContent(CONTENT_AIR);
 					n0.param2 = 0;
 					setNode(p0, n0);
 				}
@@ -1670,7 +1670,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 					v3s16 p2 = p0 + dirs[i];
 
 					MapNode n2 = getNodeNoEx(p2);
-					if(content_flowing_liquid(n2.d))
+					if(content_flowing_liquid(n2.getContent()))
 					{
 						m_transforming_liquid.push_back(p2);
 					}
@@ -1679,7 +1679,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 		}
 
 		// Get a new one from queue if the node has turned into non-water
-		if(content_liquid(n0.d) == false)
+		if(content_liquid(n0.getContent()) == false)
 			continue;
 
 		/*
@@ -1722,9 +1722,9 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 			MapNode n2 = getNodeNoEx(p2);
 			//dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
 
-			if(content_liquid(n2.d))
+			if(content_liquid(n2.getContent()))
 			{
-				u8 n2_nonsource_c = make_liquid_flowing(n2.d);
+				u8 n2_nonsource_c = make_liquid_flowing(n2.getContent());
 				// Check that the liquids are the same type
 				if(n2_nonsource_c != nonsource_c)
 				{
@@ -1732,7 +1732,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 							" collide"<<std::endl;
 					continue;
 				}
-				bool n2_is_source = !content_flowing_liquid(n2.d);
+				bool n2_is_source = !content_flowing_liquid(n2.getContent());
 				u8 n2_liquid_level = 8;
 				if(n2_is_source == false)
 					n2_liquid_level = n2.param2 & 0x07;
@@ -1760,9 +1760,9 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 					}
 				}
 			}
-			else if(n2.d == CONTENT_AIR)
+			else if(n2.getContent() == CONTENT_AIR)
 			{
-				n2.d = nonsource_c;
+				n2.setContent(nonsource_c);
 				n2.param2 = liquid_next_level;
 				setNode(p2, n2);
 
@@ -2362,7 +2362,7 @@ MapBlock * ServerMap::generateBlock(
 		{
 			v3s16 p(x0,y0,z0);
 			MapNode n = block->getNode(p);
-			if(n.d == CONTENT_IGNORE)
+			if(n.getContent() == CONTENT_IGNORE)
 			{
 				dstream<<"CONTENT_IGNORE at "
 						<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
@@ -2391,9 +2391,9 @@ MapBlock * ServerMap::generateBlock(
 			{
 				MapNode n;
 				if(y0%2==0)
-					n.d = CONTENT_AIR;
+					n.setContent(CONTENT_AIR);
 				else
-					n.d = CONTENT_STONE;
+					n.setContent(CONTENT_STONE);
 				block->setNode(v3s16(x0,y0,z0), n);
 			}
 		}
@@ -2674,19 +2674,19 @@ s16 ServerMap::findGroundLevel(v2s16 p2d)
 	for(; p.Y>min; p.Y--)
 	{
 		MapNode n = getNodeNoEx(p);
-		if(n.d != CONTENT_IGNORE)
+		if(n.getContent() != CONTENT_IGNORE)
 			break;
 	}
 	if(p.Y == min)
 		goto plan_b;
 	// If this node is not air, go to plan b
-	if(getNodeNoEx(p).d != CONTENT_AIR)
+	if(getNodeNoEx(p).getContent() != CONTENT_AIR)
 		goto plan_b;
 	// Search existing walkable and return it
 	for(; p.Y>min; p.Y--)
 	{
 		MapNode n = getNodeNoEx(p);
-		if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
+		if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
 			return p.Y;
 	}
 
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index 647a17756..ead26dd1f 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -242,7 +242,7 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
 			// Check if node above block has sunlight
 			try{
 				MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
-				if(n.d == CONTENT_IGNORE || n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
+				if(n.getContent() == CONTENT_IGNORE || n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 				{
 					no_sunlight = true;
 				}
@@ -260,8 +260,8 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
 				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)
+					//if(n.getContent() == CONTENT_WATER || n.getContent() == CONTENT_WATERSOURCE)
+					if(content_features(n).sunlight_propagates == false)
 					{
 						no_sunlight = true;
 					}
@@ -322,14 +322,14 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
 						bool upper_is_air = false;
 						try
 						{
-							if(getNodeParent(pos+v3s16(0,1,0)).d == CONTENT_AIR)
+							if(getNodeParent(pos+v3s16(0,1,0)).getContent() == CONTENT_AIR)
 								upper_is_air = true;
 						}
 						catch(InvalidPositionException &e)
 						{
 						}
 						// Turn mud into grass
-						if(upper_is_air && n.d == CONTENT_MUD
+						if(upper_is_air && n.getContent() == CONTENT_MUD
 								&& current_light == LIGHT_SUN)
 						{
 							n.d = CONTENT_GRASS;
@@ -473,7 +473,7 @@ void MapBlock::updateDayNightDiff()
 		for(u32 i=0; i<MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE; i++)
 		{
 			MapNode &n = data[i];
-			if(n.d != CONTENT_AIR)
+			if(n.getContent() != CONTENT_AIR)
 			{
 				only_air = false;
 				break;
@@ -496,8 +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(content_features(getNodeRef(p2d.X, y, p2d.Y).d).walkable)
+			MapNode n = getNodeRef(p2d.X, y, p2d.Y);
+			if(content_features(n).walkable)
 			{
 				if(y == MAP_BLOCKSIZE-1)
 					return -2;
@@ -560,7 +560,7 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 		SharedBuffer<u8> materialdata(nodecount);
 		for(u32 i=0; i<nodecount; i++)
 		{
-			materialdata[i] = data[i].d;
+			materialdata[i] = data[i].param0;
 		}
 		compress(materialdata, os, version);
 
@@ -568,7 +568,7 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 		SharedBuffer<u8> lightdata(nodecount);
 		for(u32 i=0; i<nodecount; i++)
 		{
-			lightdata[i] = data[i].param;
+			lightdata[i] = data[i].param1;
 		}
 		compress(lightdata, os, version);
 		
@@ -715,7 +715,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 						("MapBlock::deSerialize: invalid format");
 			for(u32 i=0; i<s.size(); i++)
 			{
-				data[i].d = s[i];
+				data[i].param0 = s[i];
 			}
 		}
 		{
@@ -728,7 +728,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 						("MapBlock::deSerialize: invalid format");
 			for(u32 i=0; i<s.size(); i++)
 			{
-				data[i].param = s[i];
+				data[i].param1 = s[i];
 			}
 		}
 	
diff --git a/src/mapblock_mesh.cpp b/src/mapblock_mesh.cpp
index 447716d00..45cd8d96c 100644
--- a/src/mapblock_mesh.cpp
+++ b/src/mapblock_mesh.cpp
@@ -285,7 +285,7 @@ TileSpec getNodeTile(MapNode mn, v3s16 p, v3s16 face_dir,
 	return spec;
 }
 
-u8 getNodeContent(v3s16 p, MapNode mn, NodeModMap &temp_mods)
+content_t getNodeContent(v3s16 p, MapNode mn, NodeModMap &temp_mods)
 {
 	/*
 		Check temporary modifications on this node
@@ -320,7 +320,7 @@ u8 getNodeContent(v3s16 p, MapNode mn, NodeModMap &temp_mods)
 		}
 	}
 
-	return mn.d;
+	return mn.getContent();
 }
 
 v3s16 dirs8[8] = {
@@ -343,16 +343,16 @@ u8 getSmoothLight(v3s16 p, VoxelManipulator &vmanip, u32 daynight_ratio)
 	for(u32 i=0; i<8; i++)
 	{
 		MapNode n = vmanip.getNodeNoEx(p - dirs8[i]);
-		if(content_features(n.d).param_type == CPT_LIGHT
+		if(content_features(n).param_type == CPT_LIGHT
 				// Fast-style leaves look better this way
-				&& content_features(n.d).solidness != 2)
+				&& content_features(n).solidness != 2)
 		{
 			light += decode_light(n.getLightBlend(daynight_ratio));
 			light_count++;
 		}
 		else
 		{
-			if(n.d != CONTENT_IGNORE)
+			if(n.getContent() != CONTENT_IGNORE)
 				ambient_occlusion++;
 		}
 	}
@@ -408,8 +408,8 @@ void getTileInfo(
 	TileSpec tile1 = getNodeTile(n1, p + face_dir, -face_dir, temp_mods);
 	
 	// This is hackish
-	u8 content0 = getNodeContent(p, n0, temp_mods);
-	u8 content1 = getNodeContent(p + face_dir, n1, temp_mods);
+	content_t content0 = getNodeContent(p, n0, temp_mods);
+	content_t content1 = getNodeContent(p + face_dir, n1, temp_mods);
 	u8 mf = face_contents(content0, content1);
 
 	if(mf == 0)
diff --git a/src/mapblockobject.cpp b/src/mapblockobject.cpp
index ab1c20267..071a14b0c 100644
--- a/src/mapblockobject.cpp
+++ b/src/mapblockobject.cpp
@@ -161,8 +161,8 @@ void MovingObject::move(float dtime, v3f acceleration)
 		for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
 		{
 			try{
-				if(content_walkable(m_block->getNodeParent(v3s16(x,y,z)).d)
-						== false)
+				MapNode n = m_block->getNodeParent(v3s16(x,y,z));
+				if(content_features(n).walkable == false)
 					continue;
 			}
 			catch(InvalidPositionException &e)
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index acff3b963..d4143b6d6 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -67,8 +67,8 @@ static s16 find_ground_level_clever(VoxelManipulator &vmanip, v2s16 p2d)
 	{
 		MapNode &n = vmanip.m_data[i];
 		if(content_walkable(n.d)
-				&& n.d != CONTENT_TREE
-				&& n.d != CONTENT_LEAVES)
+				&& n.getContent() != CONTENT_TREE
+				&& n.getContent() != CONTENT_LEAVES)
 			break;
 
 		vmanip.m_area.add_y(em, i, -1);
@@ -143,8 +143,8 @@ static void make_tree(VoxelManipulator &vmanip, v3s16 p0)
 		if(vmanip.m_area.contains(p) == false)
 			continue;
 		u32 vi = vmanip.m_area.index(p);
-		if(vmanip.m_data[vi].d != CONTENT_AIR
-				&& vmanip.m_data[vi].d != CONTENT_IGNORE)
+		if(vmanip.m_data[vi].getContent() != CONTENT_AIR
+				&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
 			continue;
 		u32 i = leaves_a.index(x,y,z);
 		if(leaves_d[i] == 1)
@@ -223,8 +223,8 @@ static void make_randomstone(VoxelManipulator &vmanip, v3s16 p0)
 		if(vmanip.m_area.contains(p) == false)
 			continue;
 		u32 vi = vmanip.m_area.index(p);
-		if(vmanip.m_data[vi].d != CONTENT_AIR
-				&& vmanip.m_data[vi].d != CONTENT_IGNORE)
+		if(vmanip.m_data[vi].getContent() != CONTENT_AIR
+				&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
 			continue;
 		u32 i = stone_a.index(x,y,z);
 		if(stone_d[i] == 1)
@@ -307,8 +307,8 @@ static void make_largestone(VoxelManipulator &vmanip, v3s16 p0)
 		if(vmanip.m_area.contains(p) == false)
 			continue;
 		u32 vi = vmanip.m_area.index(p);
-		/*if(vmanip.m_data[vi].d != CONTENT_AIR
-				&& vmanip.m_data[vi].d != CONTENT_IGNORE)
+		/*if(vmanip.m_data[vi].getContent() != CONTENT_AIR
+				&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
 			continue;*/
 		u32 i = stone_a.index(x,y,z);
 		if(stone_d[i] == 1)
@@ -516,9 +516,9 @@ static void make_corridor(VoxelManipulator &vmanip, v3s16 doorplace,
 			p.Y += make_stairs;
 
 		/*// If already empty
-		if(vmanip.getNodeNoExNoEmerge(p).d
+		if(vmanip.getNodeNoExNoEmerge(p).getContent()
 				== CONTENT_AIR
-		&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).d
+		&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
 				== CONTENT_AIR)
 		{
 		}*/
@@ -614,9 +614,9 @@ public:
 				randomizeDir();
 				continue;
 			}
-			if(vmanip.getNodeNoExNoEmerge(p).d
+			if(vmanip.getNodeNoExNoEmerge(p).getContent()
 					== CONTENT_COBBLE
-			&& vmanip.getNodeNoExNoEmerge(p1).d
+			&& vmanip.getNodeNoExNoEmerge(p1).getContent()
 					== CONTENT_COBBLE)
 			{
 				// Found wall, this is a good place!
@@ -630,25 +630,25 @@ public:
 				Determine where to move next
 			*/
 			// Jump one up if the actual space is there
-			if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).d
+			if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).getContent()
 					== CONTENT_COBBLE
-			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).d
+			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
 					== CONTENT_AIR
-			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,2,0)).d
+			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,2,0)).getContent()
 					== CONTENT_AIR)
 				p += v3s16(0,1,0);
 			// Jump one down if the actual space is there
-			if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).d
+			if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
 					== CONTENT_COBBLE
-			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).d
+			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).getContent()
 					== CONTENT_AIR
-			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,-1,0)).d
+			&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,-1,0)).getContent()
 					== CONTENT_AIR)
 				p += v3s16(0,-1,0);
 			// Check if walking is now possible
-			if(vmanip.getNodeNoExNoEmerge(p).d
+			if(vmanip.getNodeNoExNoEmerge(p).getContent()
 					!= CONTENT_AIR
-			|| vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).d
+			|| vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
 					!= CONTENT_AIR)
 			{
 				// Cannot continue walking here
@@ -770,7 +770,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random)
 				fits = false;
 				break;
 			}
-			if(vmanip.m_data[vi].d == CONTENT_IGNORE)
+			if(vmanip.m_data[vi].getContent() == CONTENT_IGNORE)
 			{
 				fits = false;
 				break;
@@ -1245,11 +1245,11 @@ void add_random_objects(MapBlock *block)
 		{
 			v3s16 p(x0,y0,z0);
 			MapNode n = block->getNodeNoEx(p);
-			if(n.d == CONTENT_IGNORE)
+			if(n.getContent() == CONTENT_IGNORE)
 				continue;
-			if(content_features(n.d).liquid_type != LIQUID_NONE)
+			if(content_features(n).liquid_type != LIQUID_NONE)
 				continue;
-			if(content_features(n.d).walkable)
+			if(content_features(n).walkable)
 			{
 				last_node_walkable = true;
 				continue;
@@ -1257,7 +1257,7 @@ void add_random_objects(MapBlock *block)
 			if(last_node_walkable)
 			{
 				// If block contains light information
-				if(content_features(n.d).param_type == CPT_LIGHT)
+				if(content_features(n).param_type == CPT_LIGHT)
 				{
 					if(n.getLight(LIGHTBANK_DAY) <= 3)
 					{
@@ -1363,7 +1363,7 @@ void make_block(BlockMakeData *data)
 				for(s16 y=node_min.Y; y<=node_max.Y; y++)
 				{
 					// Only modify places that have no content
-					if(vmanip.m_data[i].d == CONTENT_IGNORE)
+					if(vmanip.m_data[i].getContent() == CONTENT_IGNORE)
 					{
 						if(y <= WATER_LEVEL)
 							vmanip.m_data[i] = MapNode(CONTENT_WATERSOURCE);
@@ -1468,7 +1468,7 @@ void make_block(BlockMakeData *data)
 			for(s16 y=node_min.Y; y<=node_max.Y; y++)
 			{
 				// Only modify places that have no content
-				if(vmanip.m_data[i].d == CONTENT_IGNORE)
+				if(vmanip.m_data[i].getContent() == CONTENT_IGNORE)
 				{
 					// First priority: make air and water.
 					// This avoids caves inside water.
@@ -1513,7 +1513,7 @@ void make_block(BlockMakeData *data)
 				{
 					v3s16 p = v3s16(x,y,z) + g_27dirs[i];
 					u32 vi = vmanip.m_area.index(p);
-					if(vmanip.m_data[vi].d == CONTENT_STONE)
+					if(vmanip.m_data[vi].getContent() == CONTENT_STONE)
 						if(mineralrandom.next()%8 == 0)
 							vmanip.m_data[vi] = MapNode(CONTENT_MESE);
 				}
@@ -1554,13 +1554,13 @@ void make_block(BlockMakeData *data)
 				{
 				}*/
 
-				if(new_content.d != CONTENT_IGNORE)
+				if(new_content.getContent() != CONTENT_IGNORE)
 				{
 					for(u16 i=0; i<27; i++)
 					{
 						v3s16 p = v3s16(x,y,z) + g_27dirs[i];
 						u32 vi = vmanip.m_area.index(p);
-						if(vmanip.m_data[vi].d == base_content)
+						if(vmanip.m_data[vi].getContent() == base_content)
 						{
 							if(mineralrandom.next()%sparseness == 0)
 								vmanip.m_data[vi] = new_content;
@@ -1591,7 +1591,7 @@ void make_block(BlockMakeData *data)
 				{
 					v3s16 p = v3s16(x,y,z) + g_27dirs[i];
 					u32 vi = vmanip.m_area.index(p);
-					if(vmanip.m_data[vi].d == CONTENT_STONE)
+					if(vmanip.m_data[vi].getContent() == CONTENT_STONE)
 						if(mineralrandom.next()%8 == 0)
 							vmanip.m_data[vi] = MapNode(CONTENT_STONE, MINERAL_COAL);
 				}
@@ -1617,7 +1617,7 @@ void make_block(BlockMakeData *data)
 				{
 					v3s16 p = v3s16(x,y,z) + g_27dirs[i];
 					u32 vi = vmanip.m_area.index(p);
-					if(vmanip.m_data[vi].d == CONTENT_STONE)
+					if(vmanip.m_data[vi].getContent() == CONTENT_STONE)
 						if(mineralrandom.next()%8 == 0)
 							vmanip.m_data[vi] = MapNode(CONTENT_STONE, MINERAL_IRON);
 				}
@@ -1640,7 +1640,7 @@ void make_block(BlockMakeData *data)
 			u32 i = vmanip.m_area.index(v3s16(p2d.X, node_max.Y, p2d.Y));
 			for(s16 y=node_max.Y; y>=node_min.Y; y--)
 			{
-				if(vmanip.m_data[i].d == CONTENT_STONE)
+				if(vmanip.m_data[i].getContent() == CONTENT_STONE)
 				{
 					if(noisebuf_ground_crumbleness.get(x,y,z) > 1.3)
 					{
@@ -1692,9 +1692,9 @@ void make_block(BlockMakeData *data)
 				u32 i = vmanip.m_area.index(v3s16(p2d.X, full_node_max.Y, p2d.Y));
 				for(s16 y=full_node_max.Y; y>=full_node_min.Y; y--)
 				{
-					if(vmanip.m_data[i].d == CONTENT_AIR)
+					if(vmanip.m_data[i].getContent() == CONTENT_AIR)
 						vmanip.m_flags[i] |= VMANIP_FLAG_DUNGEON_PRESERVE;
-					else if(vmanip.m_data[i].d == CONTENT_WATERSOURCE)
+					else if(vmanip.m_data[i].getContent() == CONTENT_WATERSOURCE)
 						vmanip.m_flags[i] |= VMANIP_FLAG_DUNGEON_PRESERVE;
 					data->vmanip->m_area.add_y(em, i, -1);
 				}
@@ -1725,17 +1725,17 @@ void make_block(BlockMakeData *data)
 					double d = noise3d_perlin((float)x/2.5,
 							(float)y/2.5,(float)z/2.5,
 							blockseed, 2, 1.4);
-					if(vmanip.m_data[i].d == CONTENT_COBBLE)
+					if(vmanip.m_data[i].getContent() == CONTENT_COBBLE)
 					{
 						if(d < wetness/3.0)
 						{
-							vmanip.m_data[i].d = CONTENT_MOSSYCOBBLE;
+							vmanip.m_data[i].setContent(CONTENT_MOSSYCOBBLE);
 						}
 					}
 					/*else if(vmanip.m_flags[i] & VMANIP_FLAG_DUNGEON_INSIDE)
 					{
 						if(wetness > 1.2)
-							vmanip.m_data[i].d = CONTENT_MUD;
+							vmanip.m_data[i].setContent(CONTENT_MUD);
 					}*/
 					data->vmanip->m_area.add_y(em, i, -1);
 				}
@@ -1761,7 +1761,7 @@ void make_block(BlockMakeData *data)
 			{
 				if(water_found == false)
 				{
-					if(vmanip.m_data[i].d == CONTENT_WATERSOURCE)
+					if(vmanip.m_data[i].getContent() == CONTENT_WATERSOURCE)
 					{
 						v3s16 p = v3s16(p2d.X, y, p2d.Y);
 						data->transforming_liquid.push_back(p);
@@ -1773,7 +1773,7 @@ void make_block(BlockMakeData *data)
 					// This can be done because water_found can only
 					// turn to true and end up here after going through
 					// a single block.
-					if(vmanip.m_data[i+1].d != CONTENT_WATERSOURCE)
+					if(vmanip.m_data[i+1].getContent() != CONTENT_WATERSOURCE)
 					{
 						v3s16 p = v3s16(p2d.X, y+1, p2d.Y);
 						data->transforming_liquid.push_back(p);
@@ -1814,16 +1814,16 @@ void make_block(BlockMakeData *data)
 				u32 i = vmanip.m_area.index(v3s16(p2d.X, start_y, p2d.Y));
 				for(s16 y=start_y; y>=node_min.Y-3; y--)
 				{
-					if(vmanip.m_data[i].d == CONTENT_WATERSOURCE)
+					if(vmanip.m_data[i].getContent() == CONTENT_WATERSOURCE)
 						water_detected = true;
-					if(vmanip.m_data[i].d == CONTENT_AIR)
+					if(vmanip.m_data[i].getContent() == CONTENT_AIR)
 						air_detected = true;
 
-					if((vmanip.m_data[i].d == CONTENT_STONE
-							|| vmanip.m_data[i].d == CONTENT_GRASS
-							|| vmanip.m_data[i].d == CONTENT_MUD
-							|| vmanip.m_data[i].d == CONTENT_SAND
-							|| vmanip.m_data[i].d == CONTENT_GRAVEL
+					if((vmanip.m_data[i].getContent() == CONTENT_STONE
+							|| vmanip.m_data[i].getContent() == CONTENT_GRASS
+							|| vmanip.m_data[i].getContent() == CONTENT_MUD
+							|| vmanip.m_data[i].getContent() == CONTENT_SAND
+							|| vmanip.m_data[i].getContent() == CONTENT_GRAVEL
 							) && (air_detected || water_detected))
 					{
 						if(current_depth == 0 && y <= WATER_LEVEL+2
@@ -1846,8 +1846,8 @@ void make_block(BlockMakeData *data)
 						}
 						else
 						{
-							if(vmanip.m_data[i].d == CONTENT_MUD
-								|| vmanip.m_data[i].d == CONTENT_GRASS)
+							if(vmanip.m_data[i].getContent() == CONTENT_MUD
+								|| vmanip.m_data[i].getContent() == CONTENT_GRASS)
 								vmanip.m_data[i] = MapNode(CONTENT_STONE);
 						}
 
@@ -1894,7 +1894,7 @@ void make_block(BlockMakeData *data)
 			{
 				u32 i = data->vmanip->m_area.index(p);
 				MapNode *n = &data->vmanip->m_data[i];
-				if(n->d != CONTENT_AIR && n->d != CONTENT_IGNORE)
+				if(n->getContent() != CONTENT_AIR && n->getContent() != CONTENT_IGNORE)
 				{
 					found = true;
 					break;
@@ -1909,7 +1909,7 @@ void make_block(BlockMakeData *data)
 			{
 				u32 i = data->vmanip->m_area.index(p);
 				MapNode *n = &data->vmanip->m_data[i];
-				if(n->d != CONTENT_MUD && n->d != CONTENT_GRASS)
+				if(n->getContent() != CONTENT_MUD && n->getContent() != CONTENT_GRASS)
 					continue;
 			}
 			// Tree will be placed one higher
@@ -1942,7 +1942,7 @@ void make_block(BlockMakeData *data)
 			/*{
 				u32 i = data->vmanip->m_area.index(v3s16(p));
 				MapNode *n = &data->vmanip->m_data[i];
-				if(n->d != CONTENT_MUD && n->d != CONTENT_GRASS)
+				if(n->getContent() != CONTENT_MUD && n->getContent() != CONTENT_GRASS)
 					continue;
 			}*/
 			// Will be placed one higher
@@ -1977,7 +1977,7 @@ void make_block(BlockMakeData *data)
 			/*{
 				u32 i = data->vmanip->m_area.index(v3s16(p));
 				MapNode *n = &data->vmanip->m_data[i];
-				if(n->d != CONTENT_MUD && n->d != CONTENT_GRASS)
+				if(n->getContent() != CONTENT_MUD && n->getContent() != CONTENT_GRASS)
 					continue;
 			}*/
 			// Will be placed one lower
diff --git a/src/mapnode.cpp b/src/mapnode.cpp
index 1e9b64989..c9f85c303 100644
--- a/src/mapnode.cpp
+++ b/src/mapnode.cpp
@@ -30,8 +30,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 ContentFeatures::~ContentFeatures()
 {
-	/*if(translate_to)
-		delete translate_to;*/
 	if(initial_metadata)
 		delete initial_metadata;
 }
@@ -83,12 +81,16 @@ void ContentFeatures::setInventoryTextureCube(std::string top,
 	inventory_texture = g_texturesource->getTextureRaw(imgname_full);
 }
 
-struct ContentFeatures g_content_features[256];
+struct ContentFeatures g_content_features[MAX_CONTENT+1];
 
-ContentFeatures & content_features(u8 i)
+ContentFeatures & content_features(content_t i)
 {
 	return g_content_features[i];
 }
+ContentFeatures & content_features(MapNode &n)
+{
+	return content_features(n.getContent());
+}
 
 /*
 	See mapnode.h for description.
@@ -128,7 +130,7 @@ void init_mapnode()
 		initial_material_type = MATERIAL_ALPHA_SIMPLE;
 	else
 		initial_material_type = MATERIAL_ALPHA_NONE;*/
-	for(u16 i=0; i<256; i++)
+	for(u16 i=0; i<MAX_CONTENT+1; i++)
 	{
 		ContentFeatures *f = &g_content_features[i];
 		// Re-initialize
@@ -142,7 +144,7 @@ void init_mapnode()
 		Initially set every block to be shown as an unknown block.
 		Don't touch CONTENT_IGNORE or CONTENT_AIR.
 	*/
-	for(u16 i=0; i<256; i++)
+	for(u16 i=0; i<MAX_CONTENT+1; i++)
 	{
 		if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 			continue;
@@ -183,7 +185,7 @@ v3s16 facedir_rotate(u8 facedir, v3s16 dir)
 
 TileSpec MapNode::getTile(v3s16 dir)
 {
-	if(content_features(d).param_type == CPT_FACEDIR_SIMPLE)
+	if(content_features(*this).param_type == CPT_FACEDIR_SIMPLE)
 		dir = facedir_rotate(param1, dir);
 	
 	TileSpec spec;
@@ -207,16 +209,16 @@ TileSpec MapNode::getTile(v3s16 dir)
 	
 	if(dir_i == -1)
 		// Non-directional
-		spec = content_features(d).tiles[0];
+		spec = content_features(*this).tiles[0];
 	else 
-		spec = content_features(d).tiles[dir_i];
+		spec = content_features(*this).tiles[dir_i];
 	
 	/*
 		If it contains some mineral, change texture id
 	*/
-	if(content_features(d).param_type == CPT_MINERAL && g_texturesource)
+	if(content_features(*this).param_type == CPT_MINERAL && g_texturesource)
 	{
-		u8 mineral = param & 0x1f;
+		u8 mineral = getMineral();
 		std::string mineral_texture_name = mineral_block_texture(mineral);
 		if(mineral_texture_name != "")
 		{
@@ -235,9 +237,9 @@ TileSpec MapNode::getTile(v3s16 dir)
 
 u8 MapNode::getMineral()
 {
-	if(content_features(d).param_type == CPT_MINERAL)
+	if(content_features(*this).param_type == CPT_MINERAL)
 	{
-		return param & 0x1f;
+		return param1 & 0x0f;
 	}
 
 	return MINERAL_NONE;
@@ -260,33 +262,36 @@ void MapNode::serialize(u8 *dest, u8 version)
 	if(!ser_ver_supported(version))
 		throw VersionMismatchException("ERROR: MapNode format not supported");
 		
-	u8 actual_d = d;
+	// Translate to wanted version
+	MapNode n_foreign = mapnode_translate_from_internal(*this, version);
 
-	// Convert from new version to old
+	u8 actual_param0 = n_foreign.param0;
+
+	// Convert special values from new version to old
 	if(version <= 18)
 	{
 		// In these versions, CONTENT_IGNORE and CONTENT_AIR
 		// are 255 and 254
-		if(actual_d == CONTENT_IGNORE)
-			actual_d = 255;
-		else if(actual_d == CONTENT_AIR)
-			actual_d = 254;
+		if(actual_param0 == CONTENT_IGNORE)
+			actual_param0 = 255;
+		else if(actual_param0 == CONTENT_AIR)
+			actual_param0 = 254;
 	}
 
 	if(version == 0)
 	{
-		dest[0] = actual_d;
+		dest[0] = actual_param0;
 	}
 	else if(version <= 9)
 	{
-		dest[0] = actual_d;
-		dest[1] = param;
+		dest[0] = actual_param0;
+		dest[1] = n_foreign.param1;
 	}
 	else
 	{
-		dest[0] = actual_d;
-		dest[1] = param;
-		dest[2] = param2;
+		dest[0] = actual_param0;
+		dest[1] = n_foreign.param1;
+		dest[2] = n_foreign.param2;
 	}
 }
 void MapNode::deSerialize(u8 *source, u8 version)
@@ -296,47 +301,50 @@ void MapNode::deSerialize(u8 *source, u8 version)
 		
 	if(version == 0)
 	{
-		d = source[0];
+		param0 = source[0];
 	}
 	else if(version == 1)
 	{
-		d = source[0];
+		param0 = source[0];
 		// This version doesn't support saved lighting
 		if(light_propagates() || light_source() > 0)
-			param = 0;
+			param1 = 0;
 		else
-			param = source[1];
+			param1 = source[1];
 	}
 	else if(version <= 9)
 	{
-		d = source[0];
-		param = source[1];
+		param0 = source[0];
+		param1 = source[1];
 	}
 	else
 	{
-		d = source[0];
-		param = source[1];
+		param0 = source[0];
+		param1 = source[1];
 		param2 = source[2];
 	}
 	
-	// Convert from old version to new
+	// Convert special values from old version to new
 	if(version <= 18)
 	{
 		// In these versions, CONTENT_IGNORE and CONTENT_AIR
 		// are 255 and 254
-		if(d == 255)
-			d = CONTENT_IGNORE;
-		else if(d == 254)
-			d = CONTENT_AIR;
+		if(param0 == 255)
+			param0 = CONTENT_IGNORE;
+		else if(param0 == 254)
+			param0 = CONTENT_AIR;
 	}
 	// version 19 is fucked up with sometimes the old values and sometimes not
 	if(version == 19)
 	{
-		if(d == 255)
-			d = CONTENT_IGNORE;
-		else if(d == 254)
-			d = CONTENT_AIR;
+		if(param0 == 255)
+			param0 = CONTENT_IGNORE;
+		else if(param0 == 254)
+			param0 = CONTENT_AIR;
 	}
+
+	// Translate to our known version
+	*this = mapnode_translate_to_internal(*this, version);
 }
 
 /*
diff --git a/src/mapnode.h b/src/mapnode.h
index 36d48fb9e..1b10a546b 100644
--- a/src/mapnode.h
+++ b/src/mapnode.h
@@ -32,16 +32,15 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 /*
 	Naming scheme:
 	- Material = irrlicht's Material class
-	- Content = (u8) content of a node
+	- Content = (content_t) content of a node
 	- Tile = TileSpec at some side of a node of some content type
-*/
 
-/*
-	Ranges:
+	Content ranges:
 		0x000...0x07f: param2 is fully usable
 		0x800...0xfff: param2 lower 4 bytes are free
 */
 typedef u16 content_t;
+#define MAX_CONTENT 0xfff
 
 /*
 	Initializes all kind of stuff in here.
@@ -102,10 +101,7 @@ class NodeMetadata;
 
 struct ContentFeatures
 {
-	// If non-NULL, content is translated to this when deserialized
-	//MapNode *translate_to;
-
-	// Type of MapNode::param
+	// Type of MapNode::param1
 	ContentParamType param_type;
 
 	/*
@@ -151,7 +147,7 @@ struct ContentFeatures
 	
 	// If the content is liquid, this is the flowing version of the liquid.
 	// If content is liquid, this is the same content.
-	u8 liquid_alternative_flowing;
+	content_t liquid_alternative_flowing;
 	
 	// Amount of light the node emits
 	u8 light_source;
@@ -163,7 +159,6 @@ struct ContentFeatures
 
 	void reset()
 	{
-		//translate_to = NULL;
 		param_type = CPT_NONE;
 		inventory_texture = NULL;
 		is_ground_content = false;
@@ -228,8 +223,8 @@ struct ContentFeatures
 /*
 	Call this to access the ContentFeature list
 */
-ContentFeatures & content_features(u8 i);
-
+ContentFeatures & content_features(content_t i);
+ContentFeatures & content_features(MapNode &n);
 
 /*
 	Here is a bunch of DEPRECATED functions.
@@ -240,7 +235,7 @@ ContentFeatures & content_features(u8 i);
 	in param.
 	NOTE: Don't use, use "content_features(m).whatever" instead
 */
-inline bool light_propagates_content(u8 m)
+inline bool light_propagates_content(content_t m)
 {
 	return content_features(m).light_propagates;
 }
@@ -249,7 +244,7 @@ inline bool light_propagates_content(u8 m)
 	NOTE: It doesn't seem to go through torches regardlessly of this
 	NOTE: Don't use, use "content_features(m).whatever" instead
 */
-inline bool sunlight_propagates_content(u8 m)
+inline bool sunlight_propagates_content(content_t m)
 {
 	return content_features(m).sunlight_propagates;
 }
@@ -261,35 +256,35 @@ inline bool sunlight_propagates_content(u8 m)
 	2: Opaque
 	NOTE: Don't use, use "content_features(m).whatever" instead
 */
-inline u8 content_solidness(u8 m)
+inline u8 content_solidness(content_t m)
 {
 	return content_features(m).solidness;
 }
 // Objects collide with walkable contents
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_walkable(u8 m)
+inline bool content_walkable(content_t m)
 {
 	return content_features(m).walkable;
 }
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_liquid(u8 m)
+inline bool content_liquid(content_t m)
 {
 	return content_features(m).liquid_type != LIQUID_NONE;
 }
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_flowing_liquid(u8 m)
+inline bool content_flowing_liquid(content_t m)
 {
 	return content_features(m).liquid_type == LIQUID_FLOWING;
 }
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_liquid_source(u8 m)
+inline bool content_liquid_source(content_t m)
 {
 	return content_features(m).liquid_type == LIQUID_SOURCE;
 }
 // CONTENT_WATER || CONTENT_WATERSOURCE -> CONTENT_WATER
 // CONTENT_LAVA || CONTENT_LAVASOURCE -> CONTENT_LAVA
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline u8 make_liquid_flowing(u8 m)
+inline content_t make_liquid_flowing(content_t m)
 {
 	u8 c = content_features(m).liquid_alternative_flowing;
 	assert(c != CONTENT_IGNORE);
@@ -297,17 +292,17 @@ inline u8 make_liquid_flowing(u8 m)
 }
 // Pointable contents can be pointed to in the map
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_pointable(u8 m)
+inline bool content_pointable(content_t m)
 {
 	return content_features(m).pointable;
 }
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_diggable(u8 m)
+inline bool content_diggable(content_t m)
 {
 	return content_features(m).diggable;
 }
 // NOTE: Don't use, use "content_features(m).whatever" instead
-inline bool content_buildable_to(u8 m)
+inline bool content_buildable_to(content_t m)
 {
 	return content_features(m).buildable_to;
 }
@@ -319,7 +314,7 @@ inline bool content_buildable_to(u8 m)
 		1: Face uses m1's content
 		2: Face uses m2's content
 */
-inline u8 face_contents(u8 m1, u8 m2)
+inline u8 face_contents(content_t m1, content_t m2)
 {
 	if(m1 == CONTENT_IGNORE || m2 == CONTENT_IGNORE)
 		return 0;
@@ -416,7 +411,7 @@ struct MapNode
 	union
 	{
 		u8 param0;
-		u8 d;
+		//u8 d;
 	};
 
 	/*
@@ -431,17 +426,18 @@ struct MapNode
 	union
 	{
 		u8 param1;
-		s8 param;
+		//s8 param;
 	};
 	
 	/*
 		The second parameter. Initialized to 0.
 		E.g. direction for torches and flowing water.
+		If param0 >= 0x80, bits 0xf0 of this is extended content type data
 	*/
 	union
 	{
 		u8 param2;
-		u8 dir;
+		//u8 dir;
 	};
 
 	MapNode(const MapNode & n)
@@ -449,28 +445,44 @@ struct MapNode
 		*this = n;
 	}
 	
-	MapNode(u8 data=CONTENT_AIR, u8 a_param=0, u8 a_param2=0)
+	MapNode(content_t content=CONTENT_AIR, u8 a_param1=0, u8 a_param2=0)
 	{
-		d = data;
-		param = a_param;
+		//param0 = a_param0;
+		param1 = a_param1;
 		param2 = a_param2;
+		// Set after other params because this needs to override part of param2
+		setContent(content);
 	}
 
 	bool operator==(const MapNode &other)
 	{
-		return (d == other.d
-				&& param == other.param
+		return (param0 == other.param0
+				&& param1 == other.param1
 				&& param2 == other.param2);
 	}
 	
 	// To be used everywhere
 	content_t getContent()
 	{
-		return d;
+		if(param0 < 0x80)
+			return param0;
+		else
+			return (param0<<4) + (param2>>4);
 	}
 	void setContent(content_t c)
 	{
-		d = c;
+		if(c < 0x80)
+		{
+			if(param0 >= 0x80)
+				param2 &= ~(0xf0);
+			param0 = c;
+		}
+		else
+		{
+			param0 = c>>4;
+			param2 &= ~(0xf0);
+			param2 |= (c&0x0f)<<4;
+		}
 	}
 	
 	/*
@@ -478,19 +490,19 @@ struct MapNode
 	*/
 	bool light_propagates()
 	{
-		return light_propagates_content(d);
+		return light_propagates_content(getContent());
 	}
 	bool sunlight_propagates()
 	{
-		return sunlight_propagates_content(d);
+		return sunlight_propagates_content(getContent());
 	}
 	u8 solidness()
 	{
-		return content_solidness(d);
+		return content_solidness(getContent());
 	}
 	u8 light_source()
 	{
-		return content_features(d).light_source;
+		return content_features(*this).light_source;
 	}
 
 	u8 getLightBanksWithSource()
@@ -498,10 +510,10 @@ struct MapNode
 		// Select the brightest of [light source, propagated light]
 		u8 lightday = 0;
 		u8 lightnight = 0;
-		if(content_features(d).param_type == CPT_LIGHT)
+		if(content_features(*this).param_type == CPT_LIGHT)
 		{
-			lightday = param & 0x0f;
-			lightnight = (param>>4)&0x0f;
+			lightday = param1 & 0x0f;
+			lightnight = (param1>>4)&0x0f;
 		}
 		if(light_source() > lightday)
 			lightday = light_source();
@@ -514,12 +526,12 @@ struct MapNode
 	{
 		// Select the brightest of [light source, propagated light]
 		u8 light = 0;
-		if(content_features(d).param_type == CPT_LIGHT)
+		if(content_features(*this).param_type == CPT_LIGHT)
 		{
 			if(bank == LIGHTBANK_DAY)
-				light = param & 0x0f;
+				light = param1 & 0x0f;
 			else if(bank == LIGHTBANK_NIGHT)
-				light = (param>>4)&0x0f;
+				light = (param1>>4)&0x0f;
 			else
 				assert(0);
 		}
@@ -557,17 +569,17 @@ struct MapNode
 	void setLight(enum LightBank bank, u8 a_light)
 	{
 		// If node doesn't contain light data, ignore this
-		if(content_features(d).param_type != CPT_LIGHT)
+		if(content_features(*this).param_type != CPT_LIGHT)
 			return;
 		if(bank == LIGHTBANK_DAY)
 		{
-			param &= 0xf0;
-			param |= a_light & 0x0f;
+			param1 &= 0xf0;
+			param1 |= a_light & 0x0f;
 		}
 		else if(bank == LIGHTBANK_NIGHT)
 		{
-			param &= 0x0f;
-			param |= (a_light & 0x0f)<<4;
+			param1 &= 0x0f;
+			param1 |= (a_light & 0x0f)<<4;
 		}
 		else
 			assert(0);
diff --git a/src/materials.cpp b/src/materials.cpp
index e3a24b9e3..24f300724 100644
--- a/src/materials.cpp
+++ b/src/materials.cpp
@@ -3,12 +3,12 @@
 
 // NOTE: DEPRECATED
 
-DiggingPropertiesList * getDiggingPropertiesList(u8 content)
+DiggingPropertiesList * getDiggingPropertiesList(u16 content)
 {
 	return &content_features(content).digging_properties;
 }
 
-DiggingProperties getDiggingProperties(u8 content, const std::string &tool)
+DiggingProperties getDiggingProperties(u16 content, const std::string &tool)
 {
 	DiggingPropertiesList *mprop = getDiggingPropertiesList(content);
 	if(mprop == NULL)
diff --git a/src/materials.h b/src/materials.h
index f061ecbfa..1439df194 100644
--- a/src/materials.h
+++ b/src/materials.h
@@ -97,7 +97,7 @@ private:
 };
 
 // For getting the default properties, set tool=""
-DiggingProperties getDiggingProperties(u8 material, const std::string &tool);
+DiggingProperties getDiggingProperties(u16 material, const std::string &tool);
 
 #endif
 
diff --git a/src/player.cpp b/src/player.cpp
index 6bacb088d..d52d6b88f 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -342,13 +342,13 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 		if(in_water)
 		{
 			v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
-			in_water = content_liquid(map.getNode(pp).d);
+			in_water = content_liquid(map.getNode(pp).getContent());
 		}
 		// If not in water, the threshold of going in is at lower y
 		else
 		{
 			v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
-			in_water = content_liquid(map.getNode(pp).d);
+			in_water = content_liquid(map.getNode(pp).getContent());
 		}
 	}
 	catch(InvalidPositionException &e)
@@ -361,7 +361,7 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 	*/
 	try{
 		v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
-		in_water_stable = content_liquid(map.getNode(pp).d);
+		in_water_stable = content_liquid(map.getNode(pp).getContent());
 	}
 	catch(InvalidPositionException &e)
 	{
@@ -470,7 +470,7 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 	{
 		try{
 			// Player collides into walkable nodes
-			if(content_walkable(map.getNode(v3s16(x,y,z)).d) == false)
+			if(content_walkable(map.getNode(v3s16(x,y,z)).getContent()) == false)
 				continue;
 		}
 		catch(InvalidPositionException &e)
@@ -633,10 +633,10 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 
 			try{
 				// The node to be sneaked on has to be walkable
-				if(content_walkable(map.getNode(p).d) == false)
+				if(content_walkable(map.getNode(p).getContent()) == false)
 					continue;
 				// And the node above it has to be nonwalkable
-				if(content_walkable(map.getNode(p+v3s16(0,1,0)).d) == true)
+				if(content_walkable(map.getNode(p+v3s16(0,1,0)).getContent()) == true)
 					continue;
 			}
 			catch(InvalidPositionException &e)
diff --git a/src/serialization.h b/src/serialization.h
index 974ae95d8..d93e61892 100644
--- a/src/serialization.h
+++ b/src/serialization.h
@@ -55,11 +55,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	17: MapBlocks contain timestamp
 	18: new generator (not really necessary, but it's there)
 	19: new content type handling
+	20: many existing content types translated to extended ones
 */
 // This represents an uninitialized or invalid format
 #define SER_FMT_VER_INVALID 255
 // Highest supported serialization version
-#define SER_FMT_VER_HIGHEST 19
+#define SER_FMT_VER_HIGHEST 20
 // Lowest supported serialization version
 #define SER_FMT_VER_LOWEST 0
 
diff --git a/src/server.cpp b/src/server.cpp
index c2433e1af..e3c6ce4d9 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -2494,7 +2494,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 			// Mandatory parameter; actually used for nothing
 			core::map<v3s16, MapBlock*> modified_blocks;
 
-			u8 material = CONTENT_IGNORE;
+			content_t material = CONTENT_IGNORE;
 			u8 mineral = MINERAL_NONE;
 
 			bool cannot_remove_node = false;
@@ -2505,7 +2505,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				// Get mineral
 				mineral = n.getMineral();
 				// Get material at position
-				material = n.d;
+				material = n.getContent();
 				// If not yet cancelled
 				if(cannot_remove_node == false)
 				{
@@ -2705,7 +2705,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 							<<" because privileges are "<<getPlayerPrivs(player)
 							<<std::endl;
 
-					if(content_buildable_to(n2.d) == false
+					if(content_features(n2).buildable_to == false
 						|| no_enough_privs)
 					{
 						// Client probably has wrong data.
@@ -2736,14 +2736,14 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				// Create node data
 				MaterialItem *mitem = (MaterialItem*)item;
 				MapNode n;
-				n.d = mitem->getMaterial();
+				n.setContent(mitem->getMaterial());
 
 				// Calculate direction for wall mounted stuff
-				if(content_features(n.d).wall_mounted)
-					n.dir = packDir(p_under - p_over);
+				if(content_features(n).wall_mounted)
+					n.param2 = packDir(p_under - p_over);
 
 				// Calculate the direction for furnaces and chests and stuff
-				if(content_features(n.d).param_type == CPT_FACEDIR_SIMPLE)
+				if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
 				{
 					v3f playerpos = player->getPosition();
 					v3f blockpos = intToFloat(p_over, BS) - playerpos;
diff --git a/src/test.cpp b/src/test.cpp
index 0487f1436..3ff4dc807 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -219,14 +219,14 @@ struct TestMapNode
 		MapNode n;
 
 		// Default values
-		assert(n.d == CONTENT_AIR);
+		assert(n.getContent() == CONTENT_AIR);
 		assert(n.getLight(LIGHTBANK_DAY) == 0);
 		assert(n.getLight(LIGHTBANK_NIGHT) == 0);
 		
 		// Transparency
-		n.d = CONTENT_AIR;
+		n.setContent(CONTENT_AIR);
 		assert(n.light_propagates() == true);
-		n.d = CONTENT_STONE;
+		n.setContent(CONTENT_STONE);
 		assert(n.light_propagates() == false);
 	}
 };
@@ -284,7 +284,7 @@ struct TestVoxelManipulator
 
 		v.print(dstream);
 
- 		assert(v.getNode(v3s16(-1,0,-1)).d == 2);
+ 		assert(v.getNode(v3s16(-1,0,-1)).getContent() == 2);
 
 		dstream<<"*** Reading from inexistent (0,0,-1) ***"<<std::endl;
 
@@ -298,7 +298,7 @@ struct TestVoxelManipulator
 		
 		v.print(dstream);
 
-		assert(v.getNode(v3s16(-1,0,-1)).d == 2);
+		assert(v.getNode(v3s16(-1,0,-1)).getContent() == 2);
 		EXCEPTION_CHECK(InvalidPositionException, v.getNode(v3s16(0,1,1)));
 
 #if 0
@@ -331,11 +331,11 @@ struct TestVoxelManipulator
 			MapNode n;
 			//n.pressure = size.Y - y;
 			if(*p == '#')
-				n.d = CONTENT_STONE;
+				n.setContent(CONTENT_STONE);
 			else if(*p == '.')
-				n.d = CONTENT_WATER;
+				n.setContent(CONTENT_WATER);
 			else if(*p == ' ')
-				n.d = CONTENT_AIR;
+				n.setContent(CONTENT_AIR);
 			else
 				assert(0);
 			v.setNode(v3s16(x,y,z), n);
@@ -469,8 +469,8 @@ struct TestMapBlock
 		for(u16 y=0; y<MAP_BLOCKSIZE; y++)
 		for(u16 x=0; x<MAP_BLOCKSIZE; x++)
 		{
-			//assert(b.getNode(v3s16(x,y,z)).d == CONTENT_AIR);
-			assert(b.getNode(v3s16(x,y,z)).d == CONTENT_IGNORE);
+			//assert(b.getNode(v3s16(x,y,z)).getContent() == CONTENT_AIR);
+			assert(b.getNode(v3s16(x,y,z)).getContent() == CONTENT_IGNORE);
 			assert(b.getNode(v3s16(x,y,z)).getLight(LIGHTBANK_DAY) == 0);
 			assert(b.getNode(v3s16(x,y,z)).getLight(LIGHTBANK_NIGHT) == 0);
 		}
@@ -489,7 +489,7 @@ struct TestMapBlock
 			Parent fetch functions
 		*/
 		parent.position_valid = false;
-		parent.node.d = 5;
+		parent.node.setContent(5);
 
 		MapNode n;
 		
@@ -497,7 +497,7 @@ struct TestMapBlock
 		assert(b.isValidPositionParent(v3s16(0,0,0)) == true);
 		assert(b.isValidPositionParent(v3s16(MAP_BLOCKSIZE-1,MAP_BLOCKSIZE-1,MAP_BLOCKSIZE-1)) == true);
 		n = b.getNodeParent(v3s16(0,MAP_BLOCKSIZE-1,0));
-		assert(n.d == CONTENT_AIR);
+		assert(n.getContent() == CONTENT_AIR);
 
 		// ...but outside the block they should be invalid
 		assert(b.isValidPositionParent(v3s16(-121,2341,0)) == false);
@@ -523,15 +523,15 @@ struct TestMapBlock
 		assert(b.isValidPositionParent(v3s16(-1,0,0)) == true);
 		assert(b.isValidPositionParent(v3s16(MAP_BLOCKSIZE-1,MAP_BLOCKSIZE-1,MAP_BLOCKSIZE)) == true);
 		n = b.getNodeParent(v3s16(0,0,MAP_BLOCKSIZE));
-		assert(n.d == 5);
+		assert(n.getContent() == 5);
 
 		/*
 			Set a node
 		*/
 		v3s16 p(1,2,0);
-		n.d = 4;
+		n.setContent(4);
 		b.setNode(p, n);
-		assert(b.getNode(p).d == 4);
+		assert(b.getNode(p).getContent() == 4);
 		//TODO: Update to new system
 		/*assert(b.getNodeTile(p) == 4);
 		assert(b.getNodeTile(v3s16(-1,-1,0)) == 5);*/
@@ -556,7 +556,7 @@ struct TestMapBlock
 			*/
 			parent.position_valid = true;
 			b.setIsUnderground(false);
-			parent.node.d = CONTENT_AIR;
+			parent.node.setContent(CONTENT_AIR);
 			parent.node.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 			parent.node.setLight(LIGHTBANK_NIGHT, 0);
 			core::map<v3s16, bool> light_sources;
@@ -611,7 +611,7 @@ struct TestMapBlock
 				for(u16 y=0; y<MAP_BLOCKSIZE; y++){
 					for(u16 x=0; x<MAP_BLOCKSIZE; x++){
 						MapNode n;
-						n.d = CONTENT_AIR;
+						n.setContent(CONTENT_AIR);
 						n.setLight(LIGHTBANK_DAY, 0);
 						b.setNode(v3s16(x,y,z), n);
 					}
diff --git a/src/voxel.cpp b/src/voxel.cpp
index 5938f9016..616a197e3 100644
--- a/src/voxel.cpp
+++ b/src/voxel.cpp
@@ -93,7 +93,7 @@ void VoxelManipulator::print(std::ostream &o, VoxelPrintMode mode)
 				else
 				{
 					c = 'X';
-					u8 m = m_data[m_area.index(x,y,z)].d;
+					content_t m = m_data[m_area.index(x,y,z)].getContent();
 					u8 pr = m_data[m_area.index(x,y,z)].param2;
 					if(mode == VOXELPRINT_MATERIAL)
 					{
diff --git a/util/minetestmapper.py b/util/minetestmapper.py
index 5f3aab456..162ceb204 100755
--- a/util/minetestmapper.py
+++ b/util/minetestmapper.py
@@ -170,6 +170,9 @@ stuff = {}
 
 starttime = time.time()
 
+def data_is_air(d):
+	return (d == 254 or d == 126)
+
 # Go through all sectors.
 for n in range(len(xlist)):
 	#if n > 500:
@@ -283,7 +286,7 @@ for n in range(len(xlist)):
 			for (x, z) in reversed(pixellist):
 				for y in reversed(range(16)):
 					datapos = x + y * 16 + z * 256
-					if(ord(mapdata[datapos]) != 254 and ord(mapdata[datapos]) in colors):
+					if(not data_is_air(ord(mapdata[datapos])) and ord(mapdata[datapos]) in colors):
 						if(ord(mapdata[datapos]) == 2 or ord(mapdata[datapos]) == 9):
 							water[(x, z)] += 1
 							# Add dummy stuff for drawing sea without seabed
@@ -293,7 +296,7 @@ for n in range(len(xlist)):
 							# Memorize information on the type and height of the block and for drawing the picture.
 							stuff[(chunkxpos + x, chunkzpos + z)] = (chunkypos + y, ord(mapdata[datapos]), water[(x, z)])
 							break
-					elif(ord(mapdata[datapos]) != 254 and ord(mapdata[datapos]) not in colors):
+					elif(not data_is_air(ord(mapdata[datapos])) and ord(mapdata[datapos]) not in colors):
 						print "strange block: " + xhex + "/" + zhex + "/" + yhex + " x: " + str(x) + " y: " + str(y) + " z: " + str(z) + " palikka: " + str(ord(mapdata[datapos]))
 		
 		# After finding all the pixels in the sector, we can move on to the next sector without having to continue the Y axis.
@@ -324,7 +327,7 @@ for n in range(len(xlist)):
 				for (x, z) in reversed(pixellist):
 					for y in reversed(range(16)):
 						datapos = x + y * 16 + z * 256
-						if(ord(mapdata[datapos]) != 254 and ord(mapdata[datapos]) in colors):
+						if(not data_is_air(ord(mapdata[datapos])) and ord(mapdata[datapos]) in colors):
 							if(ord(mapdata[datapos]) == 2 or ord(mapdata[datapos]) == 9):
 								water[(x, z)] += 1
 								# Add dummy stuff for drawing sea without seabed
@@ -334,7 +337,7 @@ for n in range(len(xlist)):
 								# Memorize information on the type and height of the block and for drawing the picture.
 								stuff[(chunkxpos + x, chunkzpos + z)] = (chunkypos + y, ord(mapdata[datapos]), water[(x, z)])
 								break
-						elif(ord(mapdata[datapos]) != 254 and ord(mapdata[datapos]) not in colors):
+						elif(not data_is_air(ord(mapdata[datapos])) and ord(mapdata[datapos]) not in colors):
 							print "outo palikka: " + xhex + "/" + zhex + "/" + yhex + " x: " + str(x) + " y: " + str(y) + " z: " + str(z) + " palikka: " + str(ord(mapdata[datapos]))
 			
 			# After finding all the pixels in the sector, we can move on to the next sector without having to continue the Y axis.