Bugfix: don't highlight air nodes.
[oweals/minetest.git] / src / nodedef.cpp
index c1aee5df4bdf21f4f2f9c4baeeda79380a3efc72..93751c70e3160e3355e7042ec3f47ee2c3ebea08 100644 (file)
@@ -1,18 +1,18 @@
 /*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2013 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
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser 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.
 */
@@ -20,55 +20,147 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "nodedef.h"
 
 #include "main.h" // For g_settings
-#include "nodemetadata.h"
+#include "itemdef.h"
 #ifndef SERVER
 #include "tile.h"
 #endif
 #include "log.h"
 #include "settings.h"
+#include "nameidmapping.h"
+#include "util/numeric.h"
+#include "util/serialize.h"
+//#include "profiler.h" // For TimeTaker
 
-void NodeBox::serialize(std::ostream &os)
+/*
+       NodeBox
+*/
+
+void NodeBox::reset()
 {
-       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);
+       type = NODEBOX_REGULAR;
+       // default is empty
+       fixed.clear();
+       // default is sign/ladder-like
+       wall_top = aabb3f(-BS/2, BS/2-BS/16., -BS/2, BS/2, BS/2, BS/2);
+       wall_bottom = aabb3f(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2);
+       wall_side = aabb3f(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2);
+}
+
+void NodeBox::serialize(std::ostream &os, u16 protocol_version) const
+{
+       int version = protocol_version >= 21 ? 2 : 1;
+       writeU8(os, version);
+
+       if (version == 1 && type == NODEBOX_LEVELED)
+               writeU8(os, NODEBOX_FIXED);
+       else
+               writeU8(os, type);
+
+       if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
+       {
+               writeU16(os, fixed.size());
+               for(std::vector<aabb3f>::const_iterator
+                               i = fixed.begin();
+                               i != fixed.end(); i++)
+               {
+                       writeV3F1000(os, i->MinEdge);
+                       writeV3F1000(os, i->MaxEdge);
+               }
+       }
+       else if(type == NODEBOX_WALLMOUNTED)
+       {
+               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)
+       if(version < 1 || version > 2)
                throw SerializationError("unsupported NodeBox version");
+
+       reset();
+
        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);
+
+       if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
+       {
+               u16 fixed_count = readU16(is);
+               while(fixed_count--)
+               {
+                       aabb3f box;
+                       box.MinEdge = readV3F1000(is);
+                       box.MaxEdge = readV3F1000(is);
+                       fixed.push_back(box);
+               }
+       }
+       else if(type == NODEBOX_WALLMOUNTED)
+       {
+               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);
+       }
+}
+
+/*
+       TileDef
+*/
+
+void TileDef::serialize(std::ostream &os, u16 protocol_version) const
+{
+       if(protocol_version >= 17)
+               writeU8(os, 1);
+       else
+               writeU8(os, 0);
+       os<<serializeString(name);
+       writeU8(os, animation.type);
+       writeU16(os, animation.aspect_w);
+       writeU16(os, animation.aspect_h);
+       writeF1000(os, animation.length);
+       if(protocol_version >= 17)
+               writeU8(os, backface_culling);
 }
 
-void MaterialSpec::serialize(std::ostream &os)
+void TileDef::deSerialize(std::istream &is)
 {
-       os<<serializeString(tname);
-       writeU8(os, backface_culling);
+       int version = readU8(is);
+       name = deSerializeString(is);
+       animation.type = (TileAnimationType)readU8(is);
+       animation.aspect_w = readU16(is);
+       animation.aspect_h = readU16(is);
+       animation.length = readF1000(is);
+       if(version >= 1)
+               backface_culling = readU8(is);
 }
 
-void MaterialSpec::deSerialize(std::istream &is)
+/*
+       SimpleSoundSpec serialization
+*/
+
+static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
+               std::ostream &os)
+{
+       os<<serializeString(ss.name);
+       writeF1000(os, ss.gain);
+}
+static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 {
-       tname = deSerializeString(is);
-       backface_culling = readU8(is);
+       ss.name = deSerializeString(is);
+       ss.gain = readF1000(is);
 }
 
+/*
+       ContentFeatures
+*/
+
 ContentFeatures::ContentFeatures()
 {
        reset();
@@ -76,13 +168,6 @@ ContentFeatures::ContentFeatures()
 
 ContentFeatures::~ContentFeatures()
 {
-       delete initial_metadata;
-#ifndef SERVER
-       for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
-               delete special_materials[j];
-               delete special_aps[j];
-       }
-#endif
 }
 
 void ContentFeatures::reset()
@@ -91,31 +176,33 @@ 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
+       has_on_construct = false;
+       has_on_destruct = false;
+       has_after_destruct = false;
        /*
                Actual data
+
+               NOTE: Most of this is always overridden by the default values given
+                     in builtin.lua
        */
+       name = "";
+       groups.clear();
+       // Unknown nodes can be dug
+       groups["dig_immediate"] = 2;
        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 = "";
+       for(u32 i = 0; i < 6; i++)
+               tiledef[i] = TileDef();
+       for(u16 j = 0; j < CF_SPECIAL_COUNT; j++)
+               tiledef_special[j] = TileDef();
        alpha = 255;
        post_effect_color = video::SColor(0, 0, 0, 0);
        param_type = CPT_NONE;
+       param_type_2 = CPT2_NONE;
        is_ground_content = false;
        light_propagates = false;
        sunlight_propagates = false;
@@ -124,33 +211,51 @@ void ContentFeatures::reset()
        diggable = true;
        climbable = false;
        buildable_to = false;
-       wall_mounted = false;
-       air_equivalent = false;
-       often_contains_mineral = false;
-       dug_item = "";
-       initial_metadata = NULL;
+       rightclickable = true;
+       leveled = 0;
        liquid_type = LIQUID_NONE;
-       liquid_alternative_flowing = CONTENT_IGNORE;
-       liquid_alternative_source = CONTENT_IGNORE;
+       liquid_alternative_flowing = "";
+       liquid_alternative_source = "";
        liquid_viscosity = 0;
+       liquid_renewable = true;
+       freezemelt = "";
+       liquid_range = LIQUID_LEVEL_MAX+1;
+       drowning = 0;
        light_source = 0;
        damage_per_second = 0;
+       node_box = NodeBox();
        selection_box = NodeBox();
-       material = MaterialProperties();
+       waving = 0;
+       legacy_facedir_simple = false;
+       legacy_wallmounted = false;
+       sound_footstep = SimpleSoundSpec();
+       sound_dig = SimpleSoundSpec("__group");
+       sound_dug = SimpleSoundSpec();
 }
 
-void ContentFeatures::serialize(std::ostream &os)
+void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 {
-       writeU8(os, 0); // version
+       if(protocol_version < 24){
+               serializeOld(os, protocol_version);
+               return;
+       }
+
+       writeU8(os, 7); // version
+       os<<serializeString(name);
+       writeU16(os, groups.size());
+       for(ItemGroupList::const_iterator
+                       i = groups.begin(); i != groups.end(); i++){
+               os<<serializeString(i->first);
+               writeS16(os, i->second);
+       }
        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);
+       for(u32 i = 0; i < 6; i++)
+               tiledef[i].serialize(os, protocol_version);
        writeU8(os, CF_SPECIAL_COUNT);
-       for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
-               mspec_special[i].serialize(os);
+       for(u32 i = 0; i < CF_SPECIAL_COUNT; i++){
+               tiledef_special[i].serialize(os, protocol_version);
        }
        writeU8(os, alpha);
        writeU8(os, post_effect_color.getAlpha());
@@ -158,6 +263,7 @@ void ContentFeatures::serialize(std::ostream &os)
        writeU8(os, post_effect_color.getGreen());
        writeU8(os, post_effect_color.getBlue());
        writeU8(os, param_type);
+       writeU8(os, param_type_2);
        writeU8(os, is_ground_content);
        writeU8(os, light_propagates);
        writeU8(os, sunlight_propagates);
@@ -166,51 +272,63 @@ void ContentFeatures::serialize(std::ostream &os)
        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);
-       }
+       os<<serializeString(""); // legacy: used to be metadata_name
        writeU8(os, liquid_type);
-       writeU16(os, liquid_alternative_flowing);
-       writeU16(os, liquid_alternative_source);
+       os<<serializeString(liquid_alternative_flowing);
+       os<<serializeString(liquid_alternative_source);
        writeU8(os, liquid_viscosity);
+       writeU8(os, liquid_renewable);
        writeU8(os, light_source);
        writeU32(os, damage_per_second);
-       selection_box.serialize(os);
-       material.serialize(os);
+       node_box.serialize(os, protocol_version);
+       selection_box.serialize(os, protocol_version);
+       writeU8(os, legacy_facedir_simple);
+       writeU8(os, legacy_wallmounted);
+       serializeSimpleSoundSpec(sound_footstep, os);
+       serializeSimpleSoundSpec(sound_dig, os);
+       serializeSimpleSoundSpec(sound_dug, os);
+       writeU8(os, rightclickable);
+       writeU8(os, drowning);
+       writeU8(os, leveled);
+       writeU8(os, liquid_range);
+       writeU8(os, waving);
+       // Stuff below should be moved to correct place in a version that otherwise changes
+       // the protocol version
 }
 
-void ContentFeatures::deSerialize(std::istream &is, IGameDef *gamedef)
+void ContentFeatures::deSerialize(std::istream &is)
 {
        int version = readU8(is);
-       if(version != 0)
-               throw SerializationError("unsupported ContentFeatures version");
+       if(version != 7){
+               deSerializeOld(is, version);
+               return;
+       }
+
+       name = deSerializeString(is);
+       groups.clear();
+       u32 groups_size = readU16(is);
+       for(u32 i = 0; i < groups_size; i++){
+               std::string name = deSerializeString(is);
+               int value = readS16(is);
+               groups[name] = value;
+       }
        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);
+       for(u32 i = 0; i < 6; i++)
+               tiledef[i].deSerialize(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);
-       }
+       for(u32 i = 0; i < CF_SPECIAL_COUNT; i++)
+               tiledef_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);
+       param_type_2 = (enum ContentParamType2)readU8(is);
        is_ground_content = readU8(is);
        light_propagates = readU8(is);
        sunlight_propagates = readU8(is);
@@ -219,78 +337,102 @@ void ContentFeatures::deSerialize(std::istream &is, IGameDef *gamedef)
        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;
-       }
+       deSerializeString(is); // legacy: used to be metadata_name
        liquid_type = (enum LiquidType)readU8(is);
-       liquid_alternative_flowing = readU16(is);
-       liquid_alternative_source = readU16(is);
+       liquid_alternative_flowing = deSerializeString(is);
+       liquid_alternative_source = deSerializeString(is);
        liquid_viscosity = readU8(is);
+       liquid_renewable = readU8(is);
        light_source = readU8(is);
        damage_per_second = readU32(is);
+       node_box.deSerialize(is);
        selection_box.deSerialize(is);
-       material.deSerialize(is);
-}
-
-void ContentFeatures::setTexture(u16 i, std::string name)
-{
-       used_texturenames.insert(name);
-       tname_tiles[i] = name;
-       if(tname_inventory == "")
-               tname_inventory = name;
+       legacy_facedir_simple = readU8(is);
+       legacy_wallmounted = readU8(is);
+       deSerializeSimpleSoundSpec(sound_footstep, is);
+       deSerializeSimpleSoundSpec(sound_dig, is);
+       deSerializeSimpleSoundSpec(sound_dug, is);
+       rightclickable = readU8(is);
+       drowning = readU8(is);
+       leveled = readU8(is);
+       liquid_range = readU8(is);
+       waving = readU8(is);
+       // If you add anything here, insert it primarily inside the try-catch
+       // block to not need to increase the version.
+       try{
+               // Stuff below should be moved to correct place in a version that
+               // otherwise changes the protocol version
+       }catch(SerializationError &e) {};
 }
 
-void ContentFeatures::setInventoryTexture(std::string imgname)
-{
-       tname_inventory = imgname + "^[forcesingle";
-}
-
-void ContentFeatures::setInventoryTextureCube(std::string top,
-               std::string left, std::string right)
-{
-       str_replace_char(top, '^', '&');
-       str_replace_char(left, '^', '&');
-       str_replace_char(right, '^', '&');
-
-       std::string imgname_full;
-       imgname_full += "[inventorycube{";
-       imgname_full += top;
-       imgname_full += "{";
-       imgname_full += left;
-       imgname_full += "{";
-       imgname_full += right;
-       tname_inventory = imgname_full;
-}
+/*
+       CNodeDefManager
+*/
 
 class CNodeDefManager: public IWritableNodeDefManager
 {
 public:
        void clear()
        {
-               for(u16 i=0; i<=MAX_CONTENT; i++)
+               m_content_features.clear();
+               m_name_id_mapping.clear();
+               m_name_id_mapping_with_aliases.clear();
+               m_group_to_items.clear();
+               m_next_id = 0;
+
+               u32 initial_length = 0;
+               initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
+               initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
+               initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
+               m_content_features.resize(initial_length);
+
+               // Set CONTENT_UNKNOWN
                {
-                       ContentFeatures *f = &m_content_features[i];
-                       f->reset(); // Reset to defaults
-                       f->modified = false; // Not changed from default
-                       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";
+                       ContentFeatures f;
+                       f.name = "unknown";
+                       // Insert directly into containers
+                       content_t c = CONTENT_UNKNOWN;
+                       m_content_features[c] = f;
+                       addNameIdMapping(c, f.name);
+               }
+
+               // Set CONTENT_AIR
+               {
+                       ContentFeatures f;
+                       f.name                = "air";
+                       f.drawtype            = NDT_AIRLIKE;
+                       f.param_type          = CPT_LIGHT;
+                       f.light_propagates    = true;
+                       f.sunlight_propagates = true;
+                       f.walkable            = false;
+                       f.pointable           = false;
+                       f.diggable            = false;
+                       f.buildable_to        = true;
+                       f.is_ground_content   = true;
+                       // Insert directly into containers
+                       content_t c = CONTENT_AIR;
+                       m_content_features[c] = f;
+                       addNameIdMapping(c, f.name);
+               }
+
+               // Set CONTENT_IGNORE
+               {
+                       ContentFeatures f;
+                       f.name                = "ignore";
+                       f.drawtype            = NDT_AIRLIKE;
+                       f.param_type          = CPT_NONE;
+                       f.light_propagates    = false;
+                       f.sunlight_propagates = false;
+                       f.walkable            = false;
+                       f.pointable           = false;
+                       f.diggable            = false;
+                       f.buildable_to        = true; // A way to remove accidental CONTENT_IGNOREs
+                       f.is_ground_content   = true;
+                       // Insert directly into containers
+                       content_t c = CONTENT_IGNORE;
+                       m_content_features[c] = f;
+                       addNameIdMapping(c, f.name);
                }
-#ifndef SERVER
-               // Make CONTENT_IGNORE to not block the view when occlusion culling
-               m_content_features[CONTENT_IGNORE].solidness = 0;
-#endif
        }
        CNodeDefManager()
        {
@@ -302,35 +444,161 @@ public:
        virtual IWritableNodeDefManager* clone()
        {
                CNodeDefManager *mgr = new CNodeDefManager();
-               for(u16 i=0; i<=MAX_CONTENT; i++)
-               {
-                       mgr->set(i, get(i));
-               }
+               *mgr = *this;
                return mgr;
        }
        virtual const ContentFeatures& get(content_t c) const
        {
-               assert(c <= MAX_CONTENT);
-               return m_content_features[c];
+               if(c < m_content_features.size())
+                       return m_content_features[c];
+               else
+                       return m_content_features[CONTENT_UNKNOWN];
        }
        virtual const ContentFeatures& get(const MapNode &n) const
        {
                return get(n.getContent());
        }
-       // Writable
-       virtual void set(content_t c, const ContentFeatures &def)
+       virtual bool getId(const std::string &name, content_t &result) const
        {
-               infostream<<"registerNode: registering content \""<<c<<"\""<<std::endl;
-               assert(c <= MAX_CONTENT);
-               m_content_features[c] = def;
+               std::map<std::string, content_t>::const_iterator
+                       i = m_name_id_mapping_with_aliases.find(name);
+               if(i == m_name_id_mapping_with_aliases.end())
+                       return false;
+               result = i->second;
+               return true;
        }
-       virtual ContentFeatures* getModifiable(content_t c)
+       virtual content_t getId(const std::string &name) const
        {
-               assert(c <= MAX_CONTENT);
-               m_content_features[c].modified = true; // Assume it is modified
-               return &m_content_features[c];
+               content_t id = CONTENT_IGNORE;
+               getId(name, id);
+               return id;
        }
-       virtual void updateTextures(ITextureSource *tsrc)
+       virtual void getIds(const std::string &name, std::set<content_t> &result)
+                       const
+       {
+               //TimeTaker t("getIds", NULL, PRECISION_MICRO);
+               if(name.substr(0,6) != "group:"){
+                       content_t id = CONTENT_IGNORE;
+                       if(getId(name, id))
+                               result.insert(id);
+                       return;
+               }
+               std::string group = name.substr(6);
+
+               std::map<std::string, GroupItems>::const_iterator
+                       i = m_group_to_items.find(group);
+               if (i == m_group_to_items.end())
+                       return;
+
+               const GroupItems &items = i->second;
+               for (GroupItems::const_iterator j = items.begin();
+                       j != items.end(); ++j) {
+                       if ((*j).second != 0)
+                               result.insert((*j).first);
+               }
+               //printf("getIds: %dus\n", t.stop());
+       }
+       virtual const ContentFeatures& get(const std::string &name) const
+       {
+               content_t id = CONTENT_UNKNOWN;
+               getId(name, id);
+               return get(id);
+       }
+       // returns CONTENT_IGNORE if no free ID found
+       content_t allocateId()
+       {
+               for(content_t id = m_next_id;
+                               id >= m_next_id; // overflow?
+                               ++id){
+                       while(id >= m_content_features.size()){
+                               m_content_features.push_back(ContentFeatures());
+                       }
+                       const ContentFeatures &f = m_content_features[id];
+                       if(f.name == ""){
+                               m_next_id = id + 1;
+                               return id;
+                       }
+               }
+               // If we arrive here, an overflow occurred in id.
+               // That means no ID was found
+               return CONTENT_IGNORE;
+       }
+       // IWritableNodeDefManager
+       virtual content_t set(const std::string &name,
+                       const ContentFeatures &def)
+       {
+               assert(name != "");
+               assert(name == def.name);
+
+               // Don't allow redefining ignore (but allow air and unknown)
+               if(name == "ignore"){
+                       infostream<<"NodeDefManager: WARNING: Ignoring "
+                                       <<"CONTENT_IGNORE redefinition"<<std::endl;
+                       return CONTENT_IGNORE;
+               }
+
+               content_t id = CONTENT_IGNORE;
+               bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
+               if(!found){
+                       // Get new id
+                       id = allocateId();
+                       if(id == CONTENT_IGNORE){
+                               infostream<<"NodeDefManager: WARNING: Absolute "
+                                               <<"limit reached"<<std::endl;
+                               return CONTENT_IGNORE;
+                       }
+                       assert(id != CONTENT_IGNORE);
+                       addNameIdMapping(id, name);
+               }
+               m_content_features[id] = def;
+               verbosestream<<"NodeDefManager: registering content id \""<<id
+                               <<"\": name=\""<<def.name<<"\""<<std::endl;
+
+               // Add this content to the list of all groups it belongs to
+               // FIXME: This should remove a node from groups it no longer
+               // belongs to when a node is re-registered
+               for (ItemGroupList::const_iterator i = def.groups.begin();
+                       i != def.groups.end(); ++i) {
+                       std::string group_name = i->first;
+
+                       std::map<std::string, GroupItems>::iterator
+                               j = m_group_to_items.find(group_name);
+                       if (j == m_group_to_items.end()) {
+                               m_group_to_items[group_name].push_back(
+                                               std::make_pair(id, i->second));
+                       } else {
+                               GroupItems &items = j->second;
+                               items.push_back(std::make_pair(id, i->second));
+                       }
+               }
+               return id;
+       }
+       virtual content_t allocateDummy(const std::string &name)
+       {
+               assert(name != "");
+               ContentFeatures f;
+               f.name = name;
+               return set(name, f);
+       }
+       virtual void updateAliases(IItemDefManager *idef)
+       {
+               std::set<std::string> all = idef->getAll();
+               m_name_id_mapping_with_aliases.clear();
+               for(std::set<std::string>::iterator
+                               i = all.begin(); i != all.end(); i++)
+               {
+                       std::string name = *i;
+                       std::string convert_to = idef->getAlias(name);
+                       content_t id;
+                       if(m_name_id_mapping.getId(convert_to, id))
+                       {
+                               m_name_id_mapping_with_aliases.insert(
+                                               std::make_pair(name, id));
+                       }
+               }
+       }
+       virtual void updateTextures(ITextureSource *tsrc,
+               IShaderSource *shdsrc)
        {
 #ifndef SERVER
                infostream<<"CNodeDefManager::updateTextures(): Updating "
@@ -339,11 +607,29 @@ public:
                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++)
+               bool enable_shaders = g_settings->getBool("enable_shaders");
+               bool enable_bumpmapping = g_settings->getBool("enable_bumpmapping");
+               bool enable_parallax_occlusion = g_settings->getBool("enable_parallax_occlusion");
+
+               for(u32 i=0; i<m_content_features.size(); i++)
                {
                        ContentFeatures *f = &m_content_features[i];
 
+                       // Figure out the actual tiles to use
+                       TileDef tiledef[6];
+                       for(u32 j = 0; j < 6; j++)
+                       {
+                               tiledef[j] = f->tiledef[j];
+                               if(tiledef[j].name == "")
+                                       tiledef[j].name = "unknown_node.png";
+                       }
+
+                       bool is_liquid = false;
+                       bool is_water_surface = false;
+
+                       u8 material_type;
+                       material_type = (f->alpha == 255) ? TILE_MATERIAL_BASIC : TILE_MATERIAL_ALPHA;
+
                        switch(f->drawtype){
                        default:
                        case NDT_NORMAL:
@@ -360,20 +646,25 @@ public:
                                        f->solidness = 0;
                                } else {
                                        f->solidness = 1;
-                                       if(f->alpha == 255)
-                                               f->solidness = 2;
+                                       f->backface_culling = false;
                                }
+                               is_liquid = true;
                                break;
                        case NDT_FLOWINGLIQUID:
                                assert(f->liquid_type == LIQUID_FLOWING);
                                f->solidness = 0;
                                if(opaque_water)
                                        f->alpha = 255;
+                               is_liquid = true;
                                break;
                        case NDT_GLASSLIKE:
                                f->solidness = 0;
                                f->visual_solidness = 1;
                                break;
+                       case NDT_GLASSLIKE_FRAMED:
+                               f->solidness = 0;
+                               f->visual_solidness = 1;
+                               break;
                        case NDT_ALLFACES:
                                f->solidness = 0;
                                f->visual_solidness = 1;
@@ -385,108 +676,240 @@ public:
                                        f->visual_solidness = 1;
                                } else {
                                        f->drawtype = NDT_NORMAL;
-                                       f->solidness = 1;
+                                       f->solidness = 2;
                                        for(u32 i=0; i<6; i++){
-                                               f->tname_tiles[i] = std::string("[noalpha:")
-                                                               + f->tname_tiles[i];
+                                               tiledef[i].name += std::string("^[noalpha");
                                        }
                                }
+                               if (f->waving == 1)
+                                       material_type = TILE_MATERIAL_WAVING_LEAVES;
+                               break;
+                       case NDT_PLANTLIKE:
+                               f->solidness = 0;
+                               f->backface_culling = false;
+                               if (f->waving == 1)
+                                       material_type = TILE_MATERIAL_WAVING_PLANTS;
                                break;
                        case NDT_TORCHLIKE:
                        case NDT_SIGNLIKE:
-                       case NDT_PLANTLIKE:
                        case NDT_FENCELIKE:
                        case NDT_RAILLIKE:
+                       case NDT_NODEBOX:
                                f->solidness = 0;
                                break;
                        }
 
-                       // Inventory texture
-                       if(f->tname_inventory != "")
-                               f->inventory_texture = tsrc->getTextureRaw(f->tname_inventory);
-                       else
-                               f->inventory_texture = NULL;
-                       // Tile textures
-                       for(u16 j=0; j<6; j++){
-                               if(f->tname_tiles[j] == "")
-                                       continue;
-                               f->tiles[j].texture = tsrc->getTexture(f->tname_tiles[j]);
+                       if (is_liquid){
+                               material_type = (f->alpha == 255) ? TILE_MATERIAL_LIQUID_OPAQUE : TILE_MATERIAL_LIQUID_TRANSPARENT;
+                               if (f->name == "default:water_source")
+                                       is_water_surface = true;
+                       }
+                       u32 tile_shader[6];
+                       for(u16 j=0; j<6; j++)
+                               tile_shader[j] = shdsrc->getShader("nodes_shader",material_type, f->drawtype);
+
+                       if (is_water_surface)
+                               tile_shader[0] = shdsrc->getShader("water_surface_shader",material_type, f->drawtype);
+
+                       // Tiles (fill in f->tiles[])
+                       for(u16 j = 0; j < 6; j++){
+                               // Shader
+                               f->tiles[j].shader_id = tile_shader[j];
+                               // Texture
+                               f->tiles[j].texture = tsrc->getTexture(
+                                               tiledef[j].name,
+                                               &f->tiles[j].texture_id);
+                               // Normal texture
+                               if (enable_shaders && (enable_bumpmapping || enable_parallax_occlusion))
+                                       f->tiles[j].normal_texture = tsrc->getNormalTexture(tiledef[j].name);
+                               // Alpha
                                f->tiles[j].alpha = f->alpha;
-                               if(f->alpha == 255)
-                                       f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
-                               else
-                                       f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
+                               // Material type
+                               f->tiles[j].material_type = material_type;
+                               // Material flags
+                               f->tiles[j].material_flags = 0;
                                if(f->backface_culling)
                                        f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
-                               else
-                                       f->tiles[j].material_flags &= ~MATERIAL_FLAG_BACKFACE_CULLING;
+                               if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
+                                       f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
+                               // Animation parameters
+                               int frame_count = 1;
+                               if(f->tiles[j].material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
+                                       // Get texture size to determine frame count by
+                                       // aspect ratio
+                                       v2u32 size = f->tiles[j].texture->getOriginalSize();
+                                       int frame_height = (float)size.X /
+                                                       (float)tiledef[j].animation.aspect_w *
+                                                       (float)tiledef[j].animation.aspect_h;
+                                       frame_count = size.Y / frame_height;
+                                       int frame_length_ms = 1000.0 *
+                                                       tiledef[j].animation.length / frame_count;
+                                       f->tiles[j].animation_frame_count = frame_count;
+                                       f->tiles[j].animation_frame_length_ms = frame_length_ms;
+                               }
+                               if(frame_count == 1) {
+                                       f->tiles[j].material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
+                               } else {
+                                       std::ostringstream os(std::ios::binary);
+                                       for (int i = 0; i < frame_count; i++) {
+                                               FrameSpec frame;
+                                               os.str("");
+                                               os<<tiledef[j].name<<"^[verticalframe:"<<frame_count<<":"<<i;
+                                               frame.texture = tsrc->getTexture(os.str(), &frame.texture_id);
+                                               if (f->tiles[j].normal_texture)
+                                                       frame.normal_texture = tsrc->getNormalTexture(os.str());
+                                               f->tiles[j].frames[i]=frame;
+                                       }
+                               }
                        }
-                       // Special textures
+                       // Special tiles (fill in f->special_tiles[])
                        for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
-                               // Remove all stuff
-                               if(f->special_aps[j]){
-                                       delete f->special_aps[j];
-                                       f->special_aps[j] = NULL;
+                               // Shader
+                               f->special_tiles[j].shader_id = tile_shader[j];
+                               // Texture
+                               f->special_tiles[j].texture = tsrc->getTexture(
+                                               f->tiledef_special[j].name,
+                                               &f->special_tiles[j].texture_id);
+                               // Normal texture
+                               if (enable_shaders && (enable_bumpmapping || enable_parallax_occlusion))
+                                       f->special_tiles[j].normal_texture = tsrc->getNormalTexture(f->tiledef_special[j].name);
+                               // Alpha
+                               f->special_tiles[j].alpha = f->alpha;
+                               // Material type
+                               f->special_tiles[j].material_type = material_type;
+                               // Material flags
+                               f->special_tiles[j].material_flags = 0;
+                               if(f->tiledef_special[j].backface_culling)
+                                       f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
+                               if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
+                                       f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
+                               // Animation parameters
+                               int frame_count = 1;
+                               if(f->special_tiles[j].material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
+                                       // Get texture size to determine frame count by
+                                       // aspect ratio
+                                       v2u32 size = f->special_tiles[j].texture->getOriginalSize();
+                                       int frame_height = (float)size.X /
+                                                       (float)f->tiledef_special[j].animation.aspect_w *
+                                                       (float)f->tiledef_special[j].animation.aspect_h;
+                                       frame_count = size.Y / frame_height;
+                                       int frame_length_ms = 1000.0 *
+                                                       f->tiledef_special[j].animation.length / frame_count;
+                                       f->special_tiles[j].animation_frame_count = frame_count;
+                                       f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
                                }
-                               if(f->special_materials[j]){
-                                       delete f->special_materials[j];
-                                       f->special_materials[j] = NULL;
+                               if(frame_count == 1) {
+                                       f->special_tiles[j].material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
+                               } else {
+                                       std::ostringstream os(std::ios::binary);
+                                       for (int i = 0; i < frame_count; i++) {
+                                               FrameSpec frame;
+                                               os.str("");
+                                               os<<f->tiledef_special[j].name<<"^[verticalframe:"<<frame_count<<":"<<i;
+                                               frame.texture = tsrc->getTexture(os.str(), &frame.texture_id);
+                                               if (f->special_tiles[j].normal_texture)
+                                                       frame.normal_texture = tsrc->getNormalTexture(os.str());
+                                               f->special_tiles[j].frames[i]=frame;
+                                       }
                                }
-                               // Skip if should not exist
-                               if(f->mspec_special[j].tname == "")
-                                       continue;
-                               // Create all stuff
-                               f->special_aps[j] = new AtlasPointer(
-                                               tsrc->getTexture(f->mspec_special[j].tname));
-                               f->special_materials[j] = new video::SMaterial;
-                               f->special_materials[j]->setFlag(video::EMF_LIGHTING, false);
-                               f->special_materials[j]->setFlag(video::EMF_BACK_FACE_CULLING,
-                                               f->mspec_special[j].backface_culling);
-                               f->special_materials[j]->setFlag(video::EMF_BILINEAR_FILTER, false);
-                               f->special_materials[j]->setFlag(video::EMF_FOG_ENABLE, true);
-                               f->special_materials[j]->setTexture(0, f->special_aps[j]->atlas);
-                               if(f->alpha != 255)
-                                       f->special_materials[j]->MaterialType =
-                                                       video::EMT_TRANSPARENT_VERTEX_ALPHA;
                        }
                }
 #endif
        }
-       void serialize(std::ostream &os)
+       void serialize(std::ostream &os, u16 protocol_version)
        {
+               writeU8(os, 1); // version
                u16 count = 0;
-               std::ostringstream tmp_os(std::ios::binary);
-               for(u16 i=0; i<=MAX_CONTENT; i++)
+               std::ostringstream os2(std::ios::binary);
+               for(u32 i = 0; i < m_content_features.size(); i++)
                {
+                       if(i == CONTENT_IGNORE || i == CONTENT_AIR
+                                       || i == CONTENT_UNKNOWN)
+                               continue;
                        ContentFeatures *f = &m_content_features[i];
-                       if(!f->modified)
+                       if(f->name == "")
                                continue;
-                       writeU16(tmp_os, i);
-                       f->serialize(tmp_os);
+                       writeU16(os2, i);
+                       // Wrap it in a string to allow different lengths without
+                       // strict version incompatibilities
+                       std::ostringstream wrapper_os(std::ios::binary);
+                       f->serialize(wrapper_os, protocol_version);
+                       os2<<serializeString(wrapper_os.str());
+
+                       assert(count + 1 > count); // must not overflow
                        count++;
                }
                writeU16(os, count);
-               os<<serializeLongString(tmp_os.str());
+               os<<serializeLongString(os2.str());
        }
-       void deSerialize(std::istream &is, IGameDef *gamedef)
+       void deSerialize(std::istream &is)
        {
                clear();
+               int version = readU8(is);
+               if(version != 1)
+                       throw SerializationError("unsupported NodeDefinitionManager version");
                u16 count = readU16(is);
-               std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary);
-               for(u16 n=0; n<count; n++){
-                       u16 i = readU16(tmp_is);
-                       if(i > MAX_CONTENT){
-                               errorstream<<"ContentFeatures::deSerialize(): "
-                                               <<"Too large content id: "<<i<<std::endl;
+               std::istringstream is2(deSerializeLongString(is), std::ios::binary);
+               ContentFeatures f;
+               for(u16 n = 0; n < count; n++){
+                       u16 i = readU16(is2);
+
+                       // Read it from the string wrapper
+                       std::string wrapper = deSerializeString(is2);
+                       std::istringstream wrapper_is(wrapper, std::ios::binary);
+                       f.deSerialize(wrapper_is);
+
+                       // Check error conditions
+                       if(i == CONTENT_IGNORE || i == CONTENT_AIR
+                                       || i == CONTENT_UNKNOWN){
+                               infostream<<"NodeDefManager::deSerialize(): WARNING: "
+                                       <<"not changing builtin node "<<i
+                                       <<std::endl;
                                continue;
                        }
-                       ContentFeatures *f = &m_content_features[i];
-                       f->deSerialize(tmp_is, gamedef);
-                       f->modified = true;
+                       if(f.name == ""){
+                               infostream<<"NodeDefManager::deSerialize(): WARNING: "
+                                       <<"received empty name"<<std::endl;
+                               continue;
+                       }
+                       u16 existing_id;
+                       bool found = m_name_id_mapping.getId(f.name, existing_id);  // ignore aliases
+                       if(found && i != existing_id){
+                               infostream<<"NodeDefManager::deSerialize(): WARNING: "
+                                       <<"already defined with different ID: "
+                                       <<f.name<<std::endl;
+                               continue;
+                       }
+
+                       // All is ok, add node definition with the requested ID
+                       if(i >= m_content_features.size())
+                               m_content_features.resize((u32)(i) + 1);
+                       m_content_features[i] = f;
+                       addNameIdMapping(i, f.name);
+                       verbosestream<<"deserialized "<<f.name<<std::endl;
                }
        }
 private:
-       ContentFeatures m_content_features[MAX_CONTENT+1];
+       void addNameIdMapping(content_t i, std::string name)
+       {
+               m_name_id_mapping.set(i, name);
+               m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
+       }
+private:
+       // Features indexed by id
+       std::vector<ContentFeatures> m_content_features;
+       // A mapping for fast converting back and forth between names and ids
+       NameIdMapping m_name_id_mapping;
+       // Like m_name_id_mapping, but only from names to ids, and includes
+       // item aliases too. Updated by updateAliases()
+       // Note: Not serialized.
+       std::map<std::string, content_t> m_name_id_mapping_with_aliases;
+       // A mapping from groups to a list of content_ts (and their levels)
+       // that belong to it.  Necessary for a direct lookup in getIds().
+       // Note: Not serialized.
+       std::map<std::string, GroupItems> m_group_to_items;
+       // Next possibly free id
+       content_t m_next_id;
 };
 
 IWritableNodeDefManager* createNodeDefManager()
@@ -494,3 +917,224 @@ IWritableNodeDefManager* createNodeDefManager()
        return new CNodeDefManager();
 }
 
+/*
+       Serialization of old ContentFeatures formats
+*/
+
+void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
+{
+       if(protocol_version == 13)
+       {
+               writeU8(os, 5); // version
+               os<<serializeString(name);
+               writeU16(os, groups.size());
+               for(ItemGroupList::const_iterator
+                               i = groups.begin(); i != groups.end(); i++){
+                       os<<serializeString(i->first);
+                       writeS16(os, i->second);
+               }
+               writeU8(os, drawtype);
+               writeF1000(os, visual_scale);
+               writeU8(os, 6);
+               for(u32 i = 0; i < 6; i++)
+                       tiledef[i].serialize(os, protocol_version);
+               //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
+               writeU8(os, 2);
+               for(u32 i = 0; i < 2; i++){
+                       tiledef_special[i].serialize(os, protocol_version);
+               }
+               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, param_type_2);
+               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);
+               os<<serializeString(""); // legacy: used to be metadata_name
+               writeU8(os, liquid_type);
+               os<<serializeString(liquid_alternative_flowing);
+               os<<serializeString(liquid_alternative_source);
+               writeU8(os, liquid_viscosity);
+               writeU8(os, light_source);
+               writeU32(os, damage_per_second);
+               node_box.serialize(os, protocol_version);
+               selection_box.serialize(os, protocol_version);
+               writeU8(os, legacy_facedir_simple);
+               writeU8(os, legacy_wallmounted);
+               serializeSimpleSoundSpec(sound_footstep, os);
+               serializeSimpleSoundSpec(sound_dig, os);
+               serializeSimpleSoundSpec(sound_dug, os);
+       }
+       else if (protocol_version > 13 && protocol_version < 24) {
+               writeU8(os, 6); // version
+               os<<serializeString(name);
+               writeU16(os, groups.size());
+               for(ItemGroupList::const_iterator
+                       i = groups.begin(); i != groups.end(); i++){
+                               os<<serializeString(i->first);
+                               writeS16(os, i->second);
+               }
+               writeU8(os, drawtype);
+               writeF1000(os, visual_scale);
+               writeU8(os, 6);
+               for(u32 i = 0; i < 6; i++)
+                       tiledef[i].serialize(os, protocol_version);
+               //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
+               writeU8(os, 2);
+               for(u32 i = 0; i < 2; i++){
+                       tiledef_special[i].serialize(os, protocol_version);
+               }
+               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, param_type_2);
+               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);
+               os<<serializeString(""); // legacy: used to be metadata_name
+               writeU8(os, liquid_type);
+               os<<serializeString(liquid_alternative_flowing);
+               os<<serializeString(liquid_alternative_source);
+               writeU8(os, liquid_viscosity);
+               writeU8(os, liquid_renewable);
+               writeU8(os, light_source);
+               writeU32(os, damage_per_second);
+               node_box.serialize(os, protocol_version);
+               selection_box.serialize(os, protocol_version);
+               writeU8(os, legacy_facedir_simple);
+               writeU8(os, legacy_wallmounted);
+               serializeSimpleSoundSpec(sound_footstep, os);
+               serializeSimpleSoundSpec(sound_dig, os);
+               serializeSimpleSoundSpec(sound_dug, os);
+               writeU8(os, rightclickable);
+               writeU8(os, drowning);
+               writeU8(os, leveled);
+               writeU8(os, liquid_range);
+       } else 
+               throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
+}
+
+void ContentFeatures::deSerializeOld(std::istream &is, int version)
+{
+       if(version == 5) // In PROTOCOL_VERSION 13
+       {
+               name = deSerializeString(is);
+               groups.clear();
+               u32 groups_size = readU16(is);
+               for(u32 i=0; i<groups_size; i++){
+                       std::string name = deSerializeString(is);
+                       int value = readS16(is);
+                       groups[name] = value;
+               }
+               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++)
+                       tiledef[i].deSerialize(is);
+               if(readU8(is) != CF_SPECIAL_COUNT)
+                       throw SerializationError("unsupported CF_SPECIAL_COUNT");
+               for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
+                       tiledef_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);
+               param_type_2 = (enum ContentParamType2)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);
+               deSerializeString(is); // legacy: used to be metadata_name
+               liquid_type = (enum LiquidType)readU8(is);
+               liquid_alternative_flowing = deSerializeString(is);
+               liquid_alternative_source = deSerializeString(is);
+               liquid_viscosity = readU8(is);
+               light_source = readU8(is);
+               damage_per_second = readU32(is);
+               node_box.deSerialize(is);
+               selection_box.deSerialize(is);
+               legacy_facedir_simple = readU8(is);
+               legacy_wallmounted = readU8(is);
+               deSerializeSimpleSoundSpec(sound_footstep, is);
+               deSerializeSimpleSoundSpec(sound_dig, is);
+               deSerializeSimpleSoundSpec(sound_dug, is);
+       } else if (version == 6) {
+               name = deSerializeString(is);
+               groups.clear();
+               u32 groups_size = readU16(is);
+               for(u32 i=0; i<groups_size; i++){
+                       std::string name = deSerializeString(is);
+                       int     value = readS16(is);
+                       groups[name] = value;
+               }
+               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++)
+                       tiledef[i].deSerialize(is);
+               // CF_SPECIAL_COUNT in version 6 = 2
+               if(readU8(is) != 2)
+                       throw SerializationError("unsupported CF_SPECIAL_COUNT");
+               for(u32 i=0; i<2; i++)
+                       tiledef_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);
+               param_type_2 = (enum ContentParamType2)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);
+               deSerializeString(is); // legacy: used to be metadata_name
+               liquid_type = (enum LiquidType)readU8(is);
+               liquid_alternative_flowing = deSerializeString(is);
+               liquid_alternative_source = deSerializeString(is);
+               liquid_viscosity = readU8(is);
+               liquid_renewable = readU8(is);
+               light_source = readU8(is);
+               damage_per_second = readU32(is);
+               node_box.deSerialize(is);
+               selection_box.deSerialize(is);
+               legacy_facedir_simple = readU8(is);
+               legacy_wallmounted = readU8(is);
+               deSerializeSimpleSoundSpec(sound_footstep, is);
+               deSerializeSimpleSoundSpec(sound_dig, is);
+               deSerializeSimpleSoundSpec(sound_dug, is);
+               rightclickable = readU8(is);
+               drowning = readU8(is);
+               leveled = readU8(is);
+               liquid_range = readU8(is);
+       } else
+               throw SerializationError("unsupported ContentFeatures version");
+}