Completely generalized mesh generation; ContentFeatures serialization

minetest.conf.example

@@ -100,8 +100,6 @@
 #farmesh_distance = 40
 # Enable/disable clouds
 #enable_clouds = true
-# Don't draw stone (for testing)
-#invisible_stone = false
 # Path for screenshots
 #screenshot_path = .
 # Amount of view bobbing (0 = no view bobbing, 1.0 = normal, 2.0 = double)

src/common_irrlicht.h

@@ -26,7 +26,6 @@ video::SColor(255,30,30,30));d->endScene();}
 #include "irrlichttypes.h"
 
 #ifndef SERVER
-#include <SColor.h>
 #include <IMesh.h>
 #include <IImage.h>
 #include <IrrlichtDevice.h>

src/content_mapnode.cpp

@@ -17,13 +17,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-// For g_settings
-#include "main.h"
-
 #include "content_mapnode.h"
+
+#include "irrlichttypes.h"
 #include "mapnode.h"
 #include "content_nodemeta.h"
-#include "settings.h"
 #include "nodedef.h"
 
 #define WATER_ALPHA 160
@@ -156,23 +154,8 @@ MapNode mapnode_translate_to_internal(MapNode n_from, u8 version)
 }
 
 // See header for description
-void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr)
+void content_mapnode_init(IWritableNodeDefManager *nodemgr)
 {
-	if(tsrc == NULL)
-		dstream<<"INFO: Initial run of content_mapnode_init with "
-				"tsrc=NULL. If this segfaults, "
-				"there is a bug with something not checking for "
-				"the NULL value."<<std::endl;
-	else
-		dstream<<"INFO: Full run of content_mapnode_init with "
-				"tsrc!=NULL"<<std::endl;
-
-	// Read some settings
-	bool new_style_water = g_settings->getBool("new_style_water");
-	bool new_style_leaves = g_settings->getBool("new_style_leaves");
-	bool invisible_stone = g_settings->getBool("invisible_stone");
-	bool opaque_water = g_settings->getBool("opaque_water");
-
 	content_t i;
 	ContentFeatures *f = NULL;
 
@@ -185,8 +168,6 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	f->often_contains_mineral = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(CONTENT_COBBLE)+" 1";
 	setStoneLikeMaterialProperties(f->material, 1.0);
-	if(invisible_stone)
-		f->solidness = 0; // For debugging, hides regular stone
 	
 	i = CONTENT_GRASS;
 	f = nodemgr->getModifiable(i);
@@ -278,40 +259,29 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	f->setTexture(0, "jungletree_top.png");
 	f->setTexture(1, "jungletree_top.png");
 	f->param_type = CPT_MINERAL;
-	//f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
 	setWoodLikeMaterialProperties(f->material, 1.0);
 	
 	i = CONTENT_JUNGLEGRASS;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_PLANTLIKE;
+	f->visual_scale = 1.6;
+	f->setAllTextures("junglegrass.png");
 	f->setInventoryTexture("junglegrass.png");
-	f->used_texturenames.insert("junglegrass.png"); // Add to atlas
 	f->light_propagates = true;
 	f->param_type = CPT_LIGHT;
-	//f->is_ground_content = true;
 	f->air_equivalent = false; // grass grows underneath
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	setLeavesLikeMaterialProperties(f->material, 1.0);
 
 	i = CONTENT_LEAVES;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_ALLFACES_OPTIONAL;
+	f->setAllTextures("leaves.png");
+	//f->setAllTextures("[noalpha:leaves.png");
 	f->light_propagates = true;
-	//f->param_type = CPT_MINERAL;
 	f->param_type = CPT_LIGHT;
-	//f->is_ground_content = true;
-	if(new_style_leaves)
-	{
-		f->solidness = 0; // drawn separately, makes no faces
-		f->visual_solidness = 1;
-		f->setAllTextures("leaves.png");
-		f->setInventoryTextureCube("leaves.png", "leaves.png", "leaves.png");
-	}
-	else
-	{
-		f->setAllTextures("[noalpha:leaves.png");
-	}
 	f->extra_dug_item = std::string("MaterialItem2 ")+itos(CONTENT_SAPLING)+" 1";
 	f->extra_dug_item_rarity = 20;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
@@ -330,13 +300,13 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_PAPYRUS;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_PLANTLIKE;
+	f->setAllTextures("papyrus.png");
 	f->setInventoryTexture("papyrus.png");
-	f->used_texturenames.insert("papyrus.png"); // Add to atlas
 	f->light_propagates = true;
 	f->param_type = CPT_LIGHT;
 	f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	setLeavesLikeMaterialProperties(f->material, 0.5);
 
@@ -354,27 +324,26 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_GLASS;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_GLASSLIKE;
+	f->setAllTextures("glass.png");
 	f->light_propagates = true;
 	f->sunlight_propagates = true;
 	f->param_type = CPT_LIGHT;
 	f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
-	f->solidness = 0; // drawn separately, makes no faces
-	f->visual_solidness = 1;
-	f->setAllTextures("glass.png");
 	f->setInventoryTextureCube("glass.png", "glass.png", "glass.png");
 	setGlassLikeMaterialProperties(f->material, 1.0);
 
 	i = CONTENT_FENCE;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_FENCELIKE;
+	f->setInventoryTexture("fence.png");
+	f->setTexture(0, "wood.png");
 	f->light_propagates = true;
 	f->param_type = CPT_LIGHT;
 	f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
-	f->solidness = 0; // drawn separately, makes no faces
 	f->air_equivalent = true; // grass grows underneath
-	f->setInventoryTexture("fence.png");
-	f->used_texturenames.insert("fence.png"); // Add to atlas
 	f->selection_box.type = NODEBOX_FIXED;
 	f->selection_box.fixed = core::aabbox3d<f32>(
 			-BS/7, -BS/2, -BS/7, BS/7, BS/2, BS/7);
@@ -382,13 +351,16 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_RAIL;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_RAILLIKE;
 	f->setInventoryTexture("rail.png");
-	f->used_texturenames.insert("rail.png"); // Add to atlas
+	f->setTexture(0, "rail.png");
+	f->setTexture(1, "rail_curved.png");
+	f->setTexture(2, "rail_t_junction.png");
+	f->setTexture(3, "rail_crossing.png");
 	f->light_propagates = true;
 	f->param_type = CPT_LIGHT;
 	f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
-	f->solidness = 0; // drawn separately, makes no faces
 	f->air_equivalent = true; // grass grows underneath
 	f->walkable = false;
 	f->selection_box.type = NODEBOX_FIXED;
@@ -396,14 +368,14 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_LADDER;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_SIGNLIKE;
+	f->setAllTextures("ladder.png");
 	f->setInventoryTexture("ladder.png");
-	f->used_texturenames.insert("ladder.png"); // Add to atlas
 	f->light_propagates = true;
 	f->param_type = CPT_LIGHT;
 	f->is_ground_content = true;
 	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
 	f->wall_mounted = true;
-	f->solidness = 0;
 	f->air_equivalent = true;
 	f->walkable = false;
 	f->climbable = true;
@@ -445,7 +417,6 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->sunlight_propagates = true;
-	f->solidness = 0;
 	f->walkable = false;
 	f->pointable = false;
 	f->diggable = false;
@@ -454,11 +425,11 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	
 	i = CONTENT_WATER;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_FLOWINGLIQUID;
+	f->setAllTextures("water.png", WATER_ALPHA);
 	f->setInventoryTextureCube("water.png", "water.png", "water.png");
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
-	f->solidness = 0; // Drawn separately, makes no faces
-	f->visual_solidness = 1;
 	f->walkable = false;
 	f->pointable = false;
 	f->diggable = false;
@@ -467,8 +438,6 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	f->liquid_alternative_flowing = CONTENT_WATER;
 	f->liquid_alternative_source = CONTENT_WATERSOURCE;
 	f->liquid_viscosity = WATER_VISC;
-	if(!opaque_water)
-		f->alpha = WATER_ALPHA;
 	f->post_effect_color = video::SColor(64, 100, 100, 200);
 	// Flowing water material
 	f->mspec_special[0].tname = "water.png";
@@ -478,16 +447,8 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_WATERSOURCE;
 	f = nodemgr->getModifiable(i);
-	if(new_style_water)
+	f->drawtype = NDT_LIQUID;
-	{
+	f->setAllTextures("water.png", WATER_ALPHA);
-		f->solidness = 0; // drawn separately, makes no faces
-	}
-	else // old style
-	{
-		f->solidness = 1;
-		f->setAllTextures("water.png", WATER_ALPHA);
-		f->backface_culling = false;
-	}
 	//f->setInventoryTexture("water.png");
 	f->setInventoryTextureCube("water.png", "water.png", "water.png");
 	f->param_type = CPT_LIGHT;
@@ -501,8 +462,6 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	f->liquid_alternative_flowing = CONTENT_WATER;
 	f->liquid_alternative_source = CONTENT_WATERSOURCE;
 	f->liquid_viscosity = WATER_VISC;
-	if(!opaque_water)
-		f->alpha = WATER_ALPHA;
 	f->post_effect_color = video::SColor(64, 100, 100, 200);
 	// New-style water source material (mostly unused)
 	f->mspec_special[0].tname = "water.png";
@@ -510,13 +469,12 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	
 	i = CONTENT_LAVA;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_FLOWINGLIQUID;
+	f->setAllTextures("lava.png");
 	f->setInventoryTextureCube("lava.png", "lava.png", "lava.png");
-	f->used_texturenames.insert("lava.png"); // Add to atlas
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = false;
 	f->light_source = LIGHT_MAX-1;
-	f->solidness = 0; // Drawn separately, makes no faces
-	f->visual_solidness = 1; // Does not completely cover block boundaries
 	f->walkable = false;
 	f->pointable = false;
 	f->diggable = false;
@@ -535,16 +493,8 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	
 	i = CONTENT_LAVASOURCE;
 	f = nodemgr->getModifiable(i);
-	f->used_texturenames.insert("ladder.png"); // Add to atlas
+	f->drawtype = NDT_LIQUID;
-	if(new_style_water)
+	f->setAllTextures("lava.png");
-	{
-		f->solidness = 0; // drawn separately, makes no faces
-	}
-	else // old style
-	{
-		f->solidness = 2;
-		f->setAllTextures("lava.png");
-	}
 	f->setInventoryTextureCube("lava.png", "lava.png", "lava.png");
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = false;
@@ -566,14 +516,14 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	
 	i = CONTENT_TORCH;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_TORCHLIKE;
+	f->setTexture(0, "torch_on_floor.png");
+	f->setTexture(1, "torch_on_ceiling.png");
+	f->setTexture(2, "torch.png");
 	f->setInventoryTexture("torch_on_floor.png");
-	f->used_texturenames.insert("torch_on_floor.png"); // Add to atlas
-	f->used_texturenames.insert("torch_on_ceiling.png"); // Add to atlas
-	f->used_texturenames.insert("torch.png"); // Add to atlas
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->sunlight_propagates = true;
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	f->wall_mounted = true;
 	f->air_equivalent = true;
@@ -590,12 +540,12 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 	
 	i = CONTENT_SIGN_WALL;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_SIGNLIKE;
+	f->setAllTextures("sign_wall.png");
 	f->setInventoryTexture("sign_wall.png");
-	f->used_texturenames.insert("sign_wall.png"); // Add to atlas
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->sunlight_propagates = true;
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	f->wall_mounted = true;
 	f->air_equivalent = true;
@@ -692,25 +642,26 @@ void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr
 
 	i = CONTENT_SAPLING;
 	f = nodemgr->getModifiable(i);
-	f->param_type = CPT_LIGHT;
+	f->drawtype = NDT_PLANTLIKE;
+	f->visual_scale = 1.5;
 	f->setAllTextures("sapling.png");
 	f->setInventoryTexture("sapling.png");
-	f->used_texturenames.insert("sapling.png"); // Add to atlas
+	f->param_type = CPT_LIGHT;
 	f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
 	f->light_propagates = true;
 	f->air_equivalent = false;
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	setConstantMaterialProperties(f->material, 0.0);
 	
 	i = CONTENT_APPLE;
 	f = nodemgr->getModifiable(i);
+	f->drawtype = NDT_PLANTLIKE;
+	f->visual_scale = 1.0;
+	f->setAllTextures("apple.png");
 	f->setInventoryTexture("apple.png");
-	f->used_texturenames.insert("apple.png"); // Add to atlas
 	f->param_type = CPT_LIGHT;
 	f->light_propagates = true;
 	f->sunlight_propagates = true;
-	f->solidness = 0; // drawn separately, makes no faces
 	f->walkable = false;
 	f->air_equivalent = true;
 	f->dug_item = std::string("CraftItem apple 1");

src/content_mapnode.h

@@ -21,7 +21,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define CONTENT_MAPNODE_HEADER
 
 #include "mapnode.h"
-class ITextureSource;
 class IWritableNodeDefManager;
 
 /*
@@ -36,7 +35,7 @@ class IWritableNodeDefManager;
 
 	Server only calls this once with tsrc=NULL.
 */
-void content_mapnode_init(ITextureSource *tsrc, IWritableNodeDefManager *nodemgr);
+void content_mapnode_init(IWritableNodeDefManager *nodemgr);
 
 // Backwards compatibility for non-extended content types in v19
 extern content_t trans_table_19[21][2];

src/defaultsettings.cpp

@@ -75,7 +75,6 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("invert_mouse", "false");
 	settings->setDefault("enable_farmesh", "false");
 	settings->setDefault("enable_clouds", "true");
-	settings->setDefault("invisible_stone", "false");
 	settings->setDefault("screenshot_path", ".");
 	settings->setDefault("view_bobbing_amount", "1.0");
 	settings->setDefault("enable_3d_clouds", "false");

src/game.cpp

@@ -645,7 +645,7 @@ void the_game(
 	IWritableNodeDefManager *nodedef = createNodeDefManager();
 
 	// Fill node feature table with default definitions
-	content_mapnode_init(tsrc, nodedef);
+	content_mapnode_init(nodedef);
 
 	/*
 		Create server.

src/irrlichttypes.h

@@ -27,6 +27,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <irrList.h>
 #include <irrArray.h>
 #include <aabbox3d.h>
+#include <SColor.h>
 using namespace irr;
 typedef core::vector3df v3f;
 typedef core::vector3d<s16> v3s16;

src/mapnode.cpp

@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "nodedef.h"
 #include "content_mapnode.h" // For mapnode_translate_*_internal
 
+#ifndef SERVER
 /*
 	Nodes make a face if contents differ and solidness differs.
 	Return value:
@@ -81,6 +82,7 @@ u8 face_contents(content_t m1, content_t m2, bool *equivalent,
 	else
 		return 2;
 }
+#endif
 
 v3s16 facedir_rotate(u8 facedir, v3s16 dir)
 {

src/mapnode.h

@@ -62,6 +62,7 @@ typedef u16 content_t;
 */
 #define CONTENT_AIR 126
 
+#ifndef SERVER
 /*
 	Nodes make a face if contents differ and solidness differs.
 	Return value:
@@ -72,6 +73,7 @@ typedef u16 content_t;
 */
 u8 face_contents(content_t m1, content_t m2, bool *equivalent,
 		INodeDefManager *nodemgr);
+#endif
 
 /*
 	Packs directions like (1,0,0), (1,-1,0) in six bits.

src/materials.cpp

@@ -1,7 +1,49 @@
+/*
+Minetest-c55
+Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
 #include "materials.h"
 #include "mapnode.h"
 #include "nodedef.h"
 #include "tooldef.h"
+#include "utility.h"
+
+void MaterialProperties::serialize(std::ostream &os)
+{
+	writeU8(os, 0); // version
+	writeU8(os, diggability);
+	writeF1000(os, weight);
+	writeF1000(os, crackiness);
+	writeF1000(os, crumbliness);
+	writeF1000(os, cuttability);
+}
+
+void MaterialProperties::deSerialize(std::istream &is)
+{
+	int version = readU8(is);
+	if(version != 0)
+		throw SerializationError("unsupported MaterialProperties version");
+	diggability = (enum Diggability)readU8(is);
+	weight = readF1000(is);
+	crackiness = readF1000(is);
+	crumbliness = readF1000(is);
+	cuttability = readF1000(is);
+}
 
 DiggingProperties getDiggingProperties(u16 content, ToolDiggingProperties *tp,
 		INodeDefManager *nodemgr)

src/materials.h

@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "common_irrlicht.h"
 #include <string>
+#include <iostream>
 
 enum Diggability
 {
@@ -65,6 +66,9 @@ struct MaterialProperties
 		crumbliness(1),
 		cuttability(1)
 	{}
+
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is);
 };
 
 struct DiggingProperties

src/nodedef.cpp

@@ -25,6 +25,54 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "tile.h"
 #endif
 #include "log.h"
+#include "settings.h"
+
+void NodeBox::serialize(std::ostream &os)
+{
+	writeU8(os, 0); // version
+	writeU8(os, type);
+	writeV3F1000(os, fixed.MinEdge);
+	writeV3F1000(os, fixed.MaxEdge);
+	writeV3F1000(os, wall_top.MinEdge);
+	writeV3F1000(os, wall_top.MaxEdge);
+	writeV3F1000(os, wall_bottom.MinEdge);
+	writeV3F1000(os, wall_bottom.MaxEdge);
+	writeV3F1000(os, wall_side.MinEdge);
+	writeV3F1000(os, wall_side.MaxEdge);
+}
+
+void NodeBox::deSerialize(std::istream &is)
+{
+	int version = readU8(is);
+	if(version != 0)
+		throw SerializationError("unsupported NodeBox version");
+	type = (enum NodeBoxType)readU8(is);
+	fixed.MinEdge = readV3F1000(is);
+	fixed.MaxEdge = readV3F1000(is);
+	wall_top.MinEdge = readV3F1000(is);
+	wall_top.MaxEdge = readV3F1000(is);
+	wall_bottom.MinEdge = readV3F1000(is);
+	wall_bottom.MaxEdge = readV3F1000(is);
+	wall_side.MinEdge = readV3F1000(is);
+	wall_side.MaxEdge = readV3F1000(is);
+}
+
+void MaterialSpec::serialize(std::ostream &os)
+{
+	os<<serializeString(tname);
+	writeU8(os, backface_culling);
+}
+
+void MaterialSpec::deSerialize(std::istream &is)
+{
+	tname = deSerializeString(is);
+	backface_culling = readU8(is);
+}
+
+ContentFeatures::ContentFeatures()
+{
+	reset();
+}
 
 ContentFeatures::~ContentFeatures()
 {
@@ -37,6 +85,161 @@ ContentFeatures::~ContentFeatures()
 #endif
 }
 
+void ContentFeatures::reset()
+{
+	/*
+		Cached stuff
+	*/
+#ifndef SERVER
+	inventory_texture = NULL;
+	
+	for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
+		special_materials[j] = NULL;
+		special_aps[j] = NULL;
+	}
+	solidness = 2;
+	visual_solidness = 0;
+	backface_culling = true;
+#endif
+	used_texturenames.clear();
+	modified = true; // NodeDefManager explicitly sets to false
+	/*
+		Actual data
+	*/
+	drawtype = NDT_NORMAL;
+	visual_scale = 1.0;
+	for(u32 i=0; i<6; i++)
+		tname_tiles[i] = "";
+	for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
+		mspec_special[j] = MaterialSpec();
+	tname_inventory = "";
+	alpha = 255;
+	post_effect_color = video::SColor(0, 0, 0, 0);
+	param_type = CPT_NONE;
+	is_ground_content = false;
+	light_propagates = false;
+	sunlight_propagates = false;
+	walkable = true;
+	pointable = true;
+	diggable = true;
+	climbable = false;
+	buildable_to = false;
+	wall_mounted = false;
+	air_equivalent = false;
+	often_contains_mineral = false;
+	dug_item = "";
+	initial_metadata = NULL;
+	liquid_type = LIQUID_NONE;
+	liquid_alternative_flowing = CONTENT_IGNORE;
+	liquid_alternative_source = CONTENT_IGNORE;
+	liquid_viscosity = 0;
+	light_source = 0;
+	damage_per_second = 0;
+	selection_box = NodeBox();
+	material = MaterialProperties();
+}
+
+void ContentFeatures::serialize(std::ostream &os)
+{
+	writeU8(os, 0); // version
+	writeU8(os, drawtype);
+	writeF1000(os, visual_scale);
+	writeU8(os, 6);
+	for(u32 i=0; i<6; i++)
+		os<<serializeString(tname_tiles[i]);
+	os<<serializeString(tname_inventory);
+	writeU8(os, CF_SPECIAL_COUNT);
+	for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
+		mspec_special[i].serialize(os);
+	}
+	writeU8(os, alpha);
+	writeU8(os, post_effect_color.getAlpha());
+	writeU8(os, post_effect_color.getRed());
+	writeU8(os, post_effect_color.getGreen());
+	writeU8(os, post_effect_color.getBlue());
+	writeU8(os, param_type);
+	writeU8(os, is_ground_content);
+	writeU8(os, light_propagates);
+	writeU8(os, sunlight_propagates);
+	writeU8(os, walkable);
+	writeU8(os, pointable);
+	writeU8(os, diggable);
+	writeU8(os, climbable);
+	writeU8(os, buildable_to);
+	writeU8(os, wall_mounted);
+	writeU8(os, air_equivalent);
+	writeU8(os, often_contains_mineral);
+	os<<serializeString(dug_item);
+	os<<serializeString(extra_dug_item);
+	writeS32(os, extra_dug_item_rarity);
+	if(initial_metadata){
+		writeU8(os, true);
+		initial_metadata->serialize(os);
+	} else {
+		writeU8(os, false);
+	}
+	writeU8(os, liquid_type);
+	writeU16(os, liquid_alternative_flowing);
+	writeU16(os, liquid_alternative_source);
+	writeU8(os, liquid_viscosity);
+	writeU8(os, light_source);
+	writeU32(os, damage_per_second);
+	selection_box.serialize(os);
+	material.serialize(os);
+}
+
+void ContentFeatures::deSerialize(std::istream &is, IGameDef *gamedef)
+{
+	int version = readU8(is);
+	if(version != 0)
+		throw SerializationError("unsupported ContentFeatures version");
+	drawtype = (enum NodeDrawType)readU8(is);
+	visual_scale = readF1000(is);
+	if(readU8(is) != 6)
+		throw SerializationError("unsupported tile count");
+	for(u32 i=0; i<6; i++)
+		tname_tiles[i] = deSerializeString(is);
+	tname_inventory = deSerializeString(is);
+	if(readU8(is) != CF_SPECIAL_COUNT)
+		throw SerializationError("unsupported CF_SPECIAL_COUNT");
+	for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
+		mspec_special[i].deSerialize(is);
+	}
+	alpha = readU8(is);
+	post_effect_color.setAlpha(readU8(is));
+	post_effect_color.setRed(readU8(is));
+	post_effect_color.setGreen(readU8(is));
+	post_effect_color.setBlue(readU8(is));
+	param_type = (enum ContentParamType)readU8(is);
+	is_ground_content = readU8(is);
+	light_propagates = readU8(is);
+	sunlight_propagates = readU8(is);
+	walkable = readU8(is);
+	pointable = readU8(is);
+	diggable = readU8(is);
+	climbable = readU8(is);
+	buildable_to = readU8(is);
+	wall_mounted = readU8(is);
+	air_equivalent = readU8(is);
+	often_contains_mineral = readU8(is);
+	dug_item = deSerializeString(is);
+	extra_dug_item = deSerializeString(is);
+	extra_dug_item_rarity = readS32(is);
+	if(readU8(is)){
+		initial_metadata = NodeMetadata::deSerialize(is, gamedef);
+	} else {
+		initial_metadata = NULL;
+	}
+	liquid_type = (enum LiquidType)readU8(is);
+	liquid_alternative_flowing = readU16(is);
+	liquid_alternative_source = readU16(is);
+	liquid_viscosity = readU8(is);
+	light_source = readU8(is);
+	damage_per_second = readU32(is);
+	selection_box.deSerialize(is);
+	material.deSerialize(is);
+}
+
 void ContentFeatures::setTexture(u16 i, std::string name)
 {
 	used_texturenames.insert(name);
@@ -70,20 +273,28 @@ void ContentFeatures::setInventoryTextureCube(std::string top,
 class CNodeDefManager: public IWritableNodeDefManager
 {
 public:
-	CNodeDefManager()
+	void clear()
 	{
 		for(u16 i=0; i<=MAX_CONTENT; i++)
 		{
 			ContentFeatures *f = &m_content_features[i];
-			// Reset to defaults
+			f->reset(); // Reset to defaults
-			f->reset();
+			f->modified = false; // Not changed from default
-			if(i == CONTENT_IGNORE || i == CONTENT_AIR)
+			if(i == CONTENT_IGNORE || i == CONTENT_AIR){
+				f->drawtype = NDT_AIRLIKE;
 				continue;
+			}
 			f->setAllTextures("unknown_block.png");
-			f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
+			//f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
 		}
+#ifndef SERVER
 		// Make CONTENT_IGNORE to not block the view when occlusion culling
 		m_content_features[CONTENT_IGNORE].solidness = 0;
+#endif
+	}
+	CNodeDefManager()
+	{
+		clear();
 	}
 	virtual ~CNodeDefManager()
 	{
@@ -116,6 +327,7 @@ public:
 	virtual ContentFeatures* getModifiable(content_t c)
 	{
 		assert(c <= MAX_CONTENT);
+		m_content_features[c].modified = true; // Assume it is modified
 		return &m_content_features[c];
 	}
 	virtual void updateTextures(ITextureSource *tsrc)
@@ -123,10 +335,72 @@ public:
 #ifndef SERVER
 		infostream<<"CNodeDefManager::updateTextures(): Updating "
 				<<"textures in node definitions"<<std::endl;
+
+		bool new_style_water = g_settings->getBool("new_style_water");
+		bool new_style_leaves = g_settings->getBool("new_style_leaves");
+		bool opaque_water = g_settings->getBool("opaque_water");
+		
 		for(u16 i=0; i<=MAX_CONTENT; i++)
 		{
-			infostream<<"Updating content "<<i<<std::endl;
 			ContentFeatures *f = &m_content_features[i];
+
+			switch(f->drawtype){
+			default:
+			case NDT_NORMAL:
+				f->solidness = 2;
+				break;
+			case NDT_AIRLIKE:
+				f->solidness = 0;
+				break;
+			case NDT_LIQUID:
+				assert(f->liquid_type == LIQUID_SOURCE);
+				if(opaque_water)
+					f->alpha = 255;
+				if(new_style_water){
+					f->solidness = 0;
+				} else {
+					f->solidness = 1;
+					if(f->alpha == 255)
+						f->solidness = 2;
+				}
+				break;
+			case NDT_FLOWINGLIQUID:
+				assert(f->liquid_type == LIQUID_FLOWING);
+				f->solidness = 0;
+				if(opaque_water)
+					f->alpha = 255;
+				break;
+			case NDT_GLASSLIKE:
+				f->solidness = 0;
+				f->visual_solidness = 1;
+				break;
+			case NDT_ALLFACES:
+				f->solidness = 0;
+				f->visual_solidness = 1;
+				break;
+			case NDT_ALLFACES_OPTIONAL:
+				if(new_style_leaves){
+					f->drawtype = NDT_ALLFACES;
+					f->solidness = 0;
+					f->visual_solidness = 1;
+				} else {
+					f->drawtype = NDT_NORMAL;
+					f->solidness = 1;
+					for(u32 i=0; i<6; i++){
+						f->tname_tiles[i] = std::string("[noalpha:")
+								+ f->tname_tiles[i];
+					}
+				}
+				break;
+			case NDT_TORCHLIKE:
+			case NDT_SIGNLIKE:
+			case NDT_PLANTLIKE:
+			case NDT_FENCELIKE:
+			case NDT_RAILLIKE:
+				f->solidness = 0;
+				break;
+			}
+
 			// Inventory texture
 			if(f->tname_inventory != "")
 				f->inventory_texture = tsrc->getTextureRaw(f->tname_inventory);
@@ -175,6 +449,35 @@ public:
 		}
 #endif
 	}
+	void serialize(std::ostream &os)
+	{
+		std::ostringstream tmp_os(std::ios::binary);
+		for(u16 i=0; i<=MAX_CONTENT; i++)
+		{
+			ContentFeatures *f = &m_content_features[i];
+			if(!f->modified)
+				continue;
+			writeU16(tmp_os, i);
+			f->serialize(tmp_os);
+		}
+		os<<serializeLongString(tmp_os.str());
+	}
+	void deSerialize(std::istream &is, IGameDef *gamedef)
+	{
+		clear();
+		std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
+		while(!tmp_is.eof()){
+			u16 i = readU16(tmp_is);
+			if(i > MAX_CONTENT){
+				errorstream<<"ContentFeatures::deSerialize(): "
+						<<"Too large content id: "<<i<<std::endl;
+				continue;
+			}
+			ContentFeatures *f = &m_content_features[i];
+			f->deSerialize(tmp_is, gamedef);
+			f->modified = true;
+		}
+	}
 private:
 	ContentFeatures m_content_features[MAX_CONTENT+1];
 };

src/nodedef.h

@@ -22,6 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "common_irrlicht.h"
 #include <string>
+#include <iostream>
 #include <set>
 #include "mapnode.h"
 #ifndef SERVER
@@ -29,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #endif
 #include "materials.h" // MaterialProperties
 class ITextureSource;
+class IGameDef;
 
 /*
 	TODO: Rename to nodedef.h
@@ -95,6 +97,9 @@ struct NodeBox
 		wall_bottom(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2),
 		wall_side(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2)
 	{}
+
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is);
 };
 
 struct MapNode;
@@ -109,42 +114,70 @@ struct MaterialSpec
 		tname(tname_),
 		backface_culling(backface_culling_)
 	{}
+
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is);
+};
+
+enum NodeDrawType
+{
+	NDT_NORMAL, // A basic solid block
+	NDT_AIRLIKE, // Nothing is drawn
+	NDT_LIQUID, // Do not draw face towards same kind of flowing/source liquid
+	NDT_FLOWINGLIQUID, // A very special kind of thing
+	NDT_GLASSLIKE, // Glass-like, don't draw faces towards other glass
+	NDT_ALLFACES, // Leaves-like, draw all faces no matter what
+	NDT_ALLFACES_OPTIONAL, // Fancy -> allfaces, fast -> normal
+	NDT_TORCHLIKE,
+	NDT_SIGNLIKE,
+	NDT_PLANTLIKE,
+	NDT_FENCELIKE,
+	NDT_RAILLIKE,
 };
 
 #define CF_SPECIAL_COUNT 2
 
 struct ContentFeatures
 {
+	/*
+		Cached stuff
+	*/
 #ifndef SERVER
 	// 0     1     2     3     4     5
 	// up    down  right left  back  front 
 	TileSpec tiles[6];
-	
 	video::ITexture *inventory_texture;
-
-	// Post effect color, drawn when the camera is inside the node.
-	video::SColor post_effect_color;
-
 	// Special material/texture
 	// - Currently used for flowing liquids
 	video::SMaterial *special_materials[CF_SPECIAL_COUNT];
 	AtlasPointer *special_aps[CF_SPECIAL_COUNT];
-#endif
-	
-	// Visual definition
-	std::string tname_tiles[6];
-	std::string tname_inventory;
-	MaterialSpec mspec_special[CF_SPECIAL_COUNT];
-	u8 alpha;
-	bool backface_culling;
 	u8 solidness; // Used when choosing which face is drawn
 	u8 visual_solidness; // When solidness=0, this tells how it looks like
+	bool backface_culling;
+#endif
 	
 	// List of all block textures that have been used (value is dummy)
 	// Used for texture atlas making.
 	// Exists on server too for cleaner code in content_mapnode.cpp.
 	std::set<std::string> used_texturenames;
 	
+	// True if this actually contains non-default data
+	bool modified;
+
+	/*
+		Actual data
+	*/
+
+	// Visual definition
+	enum NodeDrawType drawtype;
+	float visual_scale; // Misc. scale parameter
+	std::string tname_tiles[6];
+	std::string tname_inventory;
+	MaterialSpec mspec_special[CF_SPECIAL_COUNT];
+	u8 alpha;
+
+	// Post effect color, drawn when the camera is inside the node.
+	video::SColor post_effect_color;
 	// Type of MapNode::param1
 	ContentParamType param_type;
 	// True for all ground-like things like stone and mud, false for eg. trees
@@ -172,18 +205,14 @@ struct ContentFeatures
 	// Used for texture atlas creation.
 	// Currently only enabled for CONTENT_STONE.
 	bool often_contains_mineral;
-	
 	// Inventory item string as which the node appears in inventory when dug.
 	// Mineral overrides this.
 	std::string dug_item;
-
 	// Extra dug item and its rarity
 	std::string extra_dug_item;
 	s32 extra_dug_item_rarity;
-
 	// Initial metadata is cloned from this
 	NodeMetadata *initial_metadata;
-	
 	// Whether the node is non-liquid, source liquid or flowing liquid
 	enum LiquidType liquid_type;
 	// If the content is liquid, this is the flowing version of the liquid.
@@ -194,71 +223,21 @@ struct ContentFeatures
 	// 1 giving almost instantaneous propagation and 7 being
 	// the slowest possible
 	u8 liquid_viscosity;
-	
 	// Amount of light the node emits
 	u8 light_source;
-	
 	u32 damage_per_second;
-
 	NodeBox selection_box;
-
 	MaterialProperties material;
 
-	// NOTE: Move relevant properties to here from elsewhere
+	/*
-
+		Methods
-	void reset()
+	*/
-	{
-		// This isn't exactly complete due to lazyness
-		// TODO: Make it completely reset everything
-#ifndef SERVER
-		inventory_texture = NULL;
-		
-		post_effect_color = video::SColor(0, 0, 0, 0);
-		for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
-			special_materials[j] = NULL;
-			special_aps[j] = NULL;
-		}
-#endif
-		for(u32 i=0; i<6; i++)
-			tname_tiles[i] = "";
-		for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
-			mspec_special[j] = MaterialSpec();
-		tname_inventory = "";
-		alpha = 255;
-		backface_culling = true;
-		solidness = 2;
-		visual_solidness = 0;
-		used_texturenames.clear();
-		param_type = CPT_NONE;
-		is_ground_content = false;
-		light_propagates = false;
-		sunlight_propagates = false;
-		walkable = true;
-		pointable = true;
-		diggable = true;
-		climbable = false;
-		buildable_to = false;
-		wall_mounted = false;
-		air_equivalent = false;
-		often_contains_mineral = false;
-		dug_item = "";
-		initial_metadata = NULL;
-		liquid_type = LIQUID_NONE;
-		liquid_alternative_flowing = CONTENT_IGNORE;
-		liquid_alternative_source = CONTENT_IGNORE;
-		liquid_viscosity = 0;
-		light_source = 0;
-		damage_per_second = 0;
-		selection_box = NodeBox();
-		material = MaterialProperties();
-	}
-
-	ContentFeatures()
-	{
-		reset();
-	}
 	
+	ContentFeatures();
 	~ContentFeatures();
+	void reset();
+	void serialize(std::ostream &os);
+	void deSerialize(std::istream &is, IGameDef *gamedef);
 
 	/*
 		Quickhands for simple materials
@@ -320,6 +299,9 @@ public:
 		Call after updating the texture atlas of a TextureSource.
 	*/
 	virtual void updateTextures(ITextureSource *tsrc)=0;
+
+	virtual void serialize(std::ostream &os)=0;
+	virtual void deSerialize(std::istream &is, IGameDef *gamedef)=0;
 };
 
 IWritableNodeDefManager* createNodeDefManager();

src/server.cpp

@@ -1016,7 +1016,7 @@ Server::Server(
 	infostream<<"m_nodemgr="<<m_nodemgr<<std::endl;
 	
 	// Initialize default node definitions
-	content_mapnode_init(NULL, m_nodemgr);
+	content_mapnode_init(m_nodemgr);
 	
 	// Add default global mod path
 	m_modspaths.push_back(porting::path_data + DIR_DELIM + "mods");

src/test.cpp

@@ -1088,7 +1088,7 @@ void run_tests()
 	
 	// Create node definitions
 	IWritableNodeDefManager *nodedef = createNodeDefManager();
-	content_mapnode_init(NULL, nodedef);
+	content_mapnode_init(nodedef);
 
 	infostream<<"run_tests() started"<<std::endl;
 	TEST(TestUtilities);

src/tile.cpp

@@ -182,12 +182,15 @@ struct SourceAtlasPointer
 class SourceImageCache
 {
 public:
-	void insert(const std::string &name, video::IImage *img)
+	void insert(const std::string &name, video::IImage *img,
+			bool do_overwrite)
 	{
 		assert(img);
 		core::map<std::string, video::IImage*>::Node *n;
 		n = m_images.find(name);
 		if(n){
+			if(!do_overwrite)
+				return;
 			video::IImage *oldimg = n->getValue();
 			if(oldimg)
 				oldimg->drop();
@@ -720,7 +723,7 @@ void TextureSource::insertSourceImage(const std::string &name, video::IImage *im
 	
 	assert(get_current_thread_id() == m_main_thread);
 	
-	m_sourcecache.insert(name, img);
+	m_sourcecache.insert(name, img, false);
 
 #if 0
 	JMutexAutoLock lock(m_atlaspointer_cache_mutex);

src/utility.h

@@ -235,6 +235,19 @@ inline u32 readU32(std::istream &is)
 	return readU32((u8*)buf);
 }
 
+inline void writeS32(std::ostream &os, u32 p)
+{
+	char buf[4];
+	writeS32((u8*)buf, p);
+	os.write(buf, 4);
+}
+inline u32 readS32(std::istream &is)
+{
+	char buf[4];
+	is.read(buf, 4);
+	return readS32((u8*)buf);
+}
+
 inline void writeF1000(std::ostream &os, f32 p)
 {
 	char buf[4];