Falling sand and gravel
[oweals/minetest.git] / src / mapblock.cpp
index dcafaae73888f2661e8c30e41e35ec793e919d3e..76b8a5e799be3a8912c47d8806df81a1ddc77f60 100644 (file)
@@ -18,14 +18,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "mapblock.h"
+
+#include <sstream>
 #include "map.h"
 // For g_settings
 #include "main.h"
 #include "light.h"
-#include <sstream>
 #include "nodedef.h"
 #include "nodemetadata.h"
 #include "gamedef.h"
+#include "log.h"
+#include "nameidmapping.h"
+#include "content_mapnode.h" // For legacy name-id mapping
 
 /*
        MapBlock
@@ -188,13 +192,13 @@ void MapBlock::replaceMesh(scene::SMesh *mesh_new)
                        IMeshBuffer *buf = mesh_old->getMeshBuffer(i);
                }*/
                
-               /*dstream<<"mesh_old->getReferenceCount()="
+               /*infostream<<"mesh_old->getReferenceCount()="
                                <<mesh_old->getReferenceCount()<<std::endl;
                u32 c = mesh_old->getMeshBufferCount();
                for(u32 i=0; i<c; i++)
                {
                        scene::IMeshBuffer *buf = mesh_old->getMeshBuffer(i);
-                       dstream<<"buf->getReferenceCount()="
+                       infostream<<"buf->getReferenceCount()="
                                        <<buf->getReferenceCount()<<std::endl;
                }*/
 
@@ -271,7 +275,6 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
                                else
                                {
                                        MapNode n = getNode(v3s16(x, MAP_BLOCKSIZE-1, z));
-                                       //if(n.getContent() == CONTENT_WATER || n.getContent() == CONTENT_WATERSOURCE)
                                        if(m_gamedef->ndef()->get(n).sunlight_propagates == false)
                                        {
                                                no_sunlight = true;
@@ -327,26 +330,6 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
                                }
                                else if(nodemgr->get(n).light_propagates == false)
                                {
-                                       /*// DEPRECATED TODO: REMOVE
-                                       if(grow_grass)
-                                       {
-                                               bool upper_is_air = false;
-                                               try
-                                               {
-                                                       if(getNodeParent(pos+v3s16(0,1,0)).getContent() == CONTENT_AIR)
-                                                               upper_is_air = true;
-                                               }
-                                               catch(InvalidPositionException &e)
-                                               {
-                                               }
-                                               // Turn mud into grass
-                                               if(upper_is_air && n.getContent() == CONTENT_MUD
-                                                               && current_light == LIGHT_SUN)
-                                               {
-                                                       n.d = CONTENT_GRASS;
-                                               }
-                                       }*/
-
                                        // A solid object is on the way.
                                        stopped_to_solid_object = true;
                                        
@@ -519,6 +502,86 @@ s16 MapBlock::getGroundLevel(v2s16 p2d)
        Serialization
 */
 
+// List relevant id-name pairs for ids in the block using nodedef
+static void getBlockNodeIdMapping(NameIdMapping *nimap, MapBlock *block,
+               INodeDefManager *nodedef)
+{
+       std::set<content_t> unknown_contents;
+       for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
+       for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
+       for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
+       {
+               v3s16 p(x0,y0,z0);
+               MapNode n = block->getNode(p);
+               content_t id = n.getContent();
+               const ContentFeatures &f = nodedef->get(id);
+               const std::string &name = f.name;
+               if(name == "")
+                       unknown_contents.insert(id);
+               else
+                       nimap->set(id, name);
+       }
+       for(std::set<content_t>::const_iterator
+                       i = unknown_contents.begin();
+                       i != unknown_contents.end(); i++){
+               errorstream<<"getBlockNodeIdMapping(): IGNORING ERROR: "
+                               <<"Name for node id "<<(*i)<<" not known"<<std::endl;
+       }
+}
+// Correct ids in the block to match nodedef based on names.
+// Unknown ones are added to nodedef.
+// Will not update itself to match id-name pairs in nodedef.
+void correctBlockNodeIds(const NameIdMapping *nimap, MapBlock *block,
+               IGameDef *gamedef)
+{
+       INodeDefManager *nodedef = gamedef->ndef();
+       // This means the block contains incorrect ids, and we contain
+       // the information to convert those to names.
+       // nodedef contains information to convert our names to globally
+       // correct ids.
+       std::set<content_t> unnamed_contents;
+       std::set<std::string> unallocatable_contents;
+       for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
+       for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
+       for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
+       {
+               v3s16 p(x0,y0,z0);
+               MapNode n = block->getNode(p);
+               content_t local_id = n.getContent();
+               std::string name;
+               bool found = nimap->getName(local_id, name);
+               if(!found){
+                       unnamed_contents.insert(local_id);
+                       continue;
+               }
+               content_t global_id;
+               found = nodedef->getId(name, global_id);
+               if(!found){
+                       global_id = gamedef->allocateUnknownNodeId(name);
+                       if(global_id == CONTENT_IGNORE){
+                               unallocatable_contents.insert(name);
+                               continue;
+                       }
+               }
+               n.setContent(global_id);
+               block->setNode(p, n);
+       }
+       for(std::set<content_t>::const_iterator
+                       i = unnamed_contents.begin();
+                       i != unnamed_contents.end(); i++){
+               errorstream<<"correctBlockNodeIds(): IGNORING ERROR: "
+                               <<"Block contains id "<<(*i)
+                               <<" with no name mapping"<<std::endl;
+       }
+       for(std::set<std::string>::const_iterator
+                       i = unallocatable_contents.begin();
+                       i != unallocatable_contents.end(); i++){
+               errorstream<<"correctBlockNodeIds(): IGNORING ERROR: "
+                               <<"Could not allocate global id for node name \""
+                               <<(*i)<<"\""<<std::endl;
+       }
+}
+
 void MapBlock::serialize(std::ostream &os, u8 version)
 {
        if(!ser_ver_supported(version))
@@ -602,7 +665,7 @@ void MapBlock::serialize(std::ostream &os, u8 version)
                                flags |= 0x08;
                }
                os.write((char*)&flags, 1);
-
+               
                u32 nodecount = MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE;
 
                /*
@@ -663,8 +726,6 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 
 void MapBlock::deSerialize(std::istream &is, u8 version)
 {
-       INodeDefManager *nodemgr = m_gamedef->ndef();
-
        if(!ser_ver_supported(version))
                throw VersionMismatchException("ERROR: MapBlock format not supported");
 
@@ -698,7 +759,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
                        if(is.gcount() != len)
                                throw SerializationError
                                                ("MapBlock::deSerialize: no enough input data");
-                       data[i].deSerialize(*d, version, nodemgr);
+                       data[i].deSerialize(*d, version);
                }
        }
        else if(version <= 10)
@@ -780,7 +841,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
                        buf[0] = s[i];
                        buf[1] = s[i+nodecount];
                        buf[2] = s[i+nodecount*2];
-                       data[i].deSerialize(buf, version, m_gamedef->getNodeDefManager());
+                       data[i].deSerialize(buf, version);
                }
                
                /*
@@ -807,7 +868,7 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
                        }
                        catch(SerializationError &e)
                        {
-                               dstream<<"WARNING: MapBlock::deSerialize(): Ignoring an error"
+                               errorstream<<"WARNING: MapBlock::deSerialize(): Ignoring an error"
                                                <<" while deserializing node metadata"<<std::endl;
                        }
                }
@@ -834,6 +895,13 @@ void MapBlock::serializeDiskExtra(std::ostream &os, u8 version)
        {
                writeU32(os, getTimestamp());
        }
+
+       // Scan and write node definition id mapping
+       if(version >= 21){
+               NameIdMapping nimap;
+               getBlockNodeIdMapping(&nimap, this, m_gamedef->ndef());
+               nimap.serialize(os);
+       }
 }
 
 void MapBlock::deSerializeDiskExtra(std::istream &is, u8 version)
@@ -841,12 +909,11 @@ void MapBlock::deSerializeDiskExtra(std::istream &is, u8 version)
        /*
                Versions up from 9 have block objects. (DEPRECATED)
        */
-       if(version >= 9)
-       {
+       if(version >= 9){
                u16 count = readU16(is);
                // Not supported and length not known if count is not 0
                if(count != 0){
-                       dstream<<"WARNING: MapBlock::deSerializeDiskExtra(): "
+                       errorstream<<"WARNING: MapBlock::deSerializeDiskExtra(): "
                                        <<"Ignoring stuff coming at and after MBOs"<<std::endl;
                        return;
                }
@@ -856,19 +923,24 @@ void MapBlock::deSerializeDiskExtra(std::istream &is, u8 version)
                Versions up from 15 have static objects.
        */
        if(version >= 15)
-       {
                m_static_objects.deSerialize(is);
-       }
                
        // Timestamp
        if(version >= 17)
-       {
                setTimestamp(readU32(is));
-       }
        else
-       {
                setTimestamp(BLOCK_TIMESTAMP_UNDEFINED);
+       
+       // Dynamically re-set ids based on node names
+       NameIdMapping nimap;
+       // If supported, read node definition id mapping
+       if(version >= 21){
+               nimap.deSerialize(is);
+       // Else set the legacy mapping
+       } else {
+               content_mapnode_get_name_id_mapping(&nimap);
        }
+       correctBlockNodeIds(&nimap, this, m_gamedef);
 }
 
 /*
@@ -877,9 +949,7 @@ void MapBlock::deSerializeDiskExtra(std::istream &is, u8 version)
 std::string analyze_block(MapBlock *block)
 {
        if(block == NULL)
-       {
                return "NULL";
-       }
 
        std::ostringstream desc;
        
@@ -931,20 +1001,10 @@ std::string analyze_block(MapBlock *block)
        }
        else
        {
-               // We'll just define the numbers here, don't want to include
-               // content_mapnode.h
-               const content_t content_water = 2;
-               const content_t content_watersource = 9;
-               const content_t content_tree = 0x801;
-               const content_t content_leaves = 0x802;
-               const content_t content_jungletree = 0x815;
-
                bool full_ignore = true;
                bool some_ignore = false;
                bool full_air = true;
                bool some_air = false;
-               bool trees = false;
-               bool water = false;
                for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
                for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
                for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
@@ -960,12 +1020,6 @@ std::string analyze_block(MapBlock *block)
                                some_air = true;
                        else
                                full_air = false;
-                       if(c == content_tree || c == content_jungletree
-                                       || c == content_leaves)
-                               trees = true;
-                       if(c == content_water
-                                       || c == content_watersource)
-                               water = true;
                }
                
                desc<<"content {";
@@ -981,11 +1035,6 @@ std::string analyze_block(MapBlock *block)
                        ss<<"AIR (full), ";
                else if(some_air)
                        ss<<"AIR, ";
-
-               if(trees)
-                       ss<<"trees, ";
-               if(water)
-                       ss<<"water, ";
                
                if(ss.str().size()>=2)
                        desc<<ss.str().substr(0, ss.str().size()-2);