Don't ship with broken languages (#4940)
[oweals/minetest.git] / src / mapblock.h
index dd1d5e5aa590dd8ee5888ed260b3f079a2529752..5adfcf3fb56deff54bbecbec0001f9411a88ff75 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.
 */
@@ -20,24 +20,24 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef MAPBLOCK_HEADER
 #define MAPBLOCK_HEADER
 
-#include <jmutex.h>
-#include <jmutexautolock.h>
-#include <exception>
+#include <set>
 #include "debug.h"
-#include "common_irrlicht.h"
+#include "irr_v3d.h"
 #include "mapnode.h"
 #include "exceptions.h"
-#include "serialization.h"
 #include "constants.h"
-#include "mapblockobject.h"
-#include "voxel.h"
-#include "nodemetadata.h"
 #include "staticobject.h"
-#include "mapblock_nodemod.h"
-#ifndef SERVER
-       #include "mapblock_mesh.h"
-#endif
+#include "nodemetadata.h"
+#include "nodetimer.h"
+#include "modifiedstate.h"
+#include "util/numeric.h" // getContainerPos
+#include "settings.h"
 
+class Map;
+class NodeMetadataList;
+class IGameDef;
+class MapBlockMesh;
+class VoxelManipulator;
 
 #define BLOCK_TIMESTAMP_UNDEFINED 0xffffffff
 
@@ -51,6 +51,24 @@ enum{
        FACE_LEFT
 };*/
 
+// NOTE: If this is enabled, set MapBlock to be initialized with
+//       CONTENT_IGNORE.
+/*enum BlockGenerationStatus
+{
+       // Completely non-generated (filled with CONTENT_IGNORE).
+       BLOCKGEN_UNTOUCHED=0,
+       // Trees or similar might have been blitted from other blocks to here.
+       // Otherwise, the block contains CONTENT_IGNORE
+       BLOCKGEN_FROM_NEIGHBORS=2,
+       // Has been generated, but some neighbors might put some stuff in here
+       // when they are generated.
+       // Does not contain any CONTENT_IGNORE
+       BLOCKGEN_SELF_GENERATED=4,
+       // The block and all its neighbors have been generated
+       BLOCKGEN_FULLY_GENERATED=6
+};*/
+
+#if 0
 enum
 {
        NODECONTAINER_ID_MAPBLOCK,
@@ -78,137 +96,173 @@ public:
                }
        }
 };
+#endif
 
-/*
-       MapBlock itself
-*/
-
-class MapBlock : public NodeContainer
+////
+//// MapBlock modified reason flags
+////
+
+#define MOD_REASON_INITIAL                   (1 << 0)
+#define MOD_REASON_REALLOCATE                (1 << 1)
+#define MOD_REASON_SET_IS_UNDERGROUND        (1 << 2)
+#define MOD_REASON_SET_LIGHTING_EXPIRED      (1 << 3)
+#define MOD_REASON_SET_GENERATED             (1 << 4)
+#define MOD_REASON_SET_NODE                  (1 << 5)
+#define MOD_REASON_SET_NODE_NO_CHECK         (1 << 6)
+#define MOD_REASON_SET_TIMESTAMP             (1 << 7)
+#define MOD_REASON_REPORT_META_CHANGE        (1 << 8)
+#define MOD_REASON_CLEAR_ALL_OBJECTS         (1 << 9)
+#define MOD_REASON_BLOCK_EXPIRED             (1 << 10)
+#define MOD_REASON_ADD_ACTIVE_OBJECT_RAW     (1 << 11)
+#define MOD_REASON_REMOVE_OBJECTS_REMOVE     (1 << 12)
+#define MOD_REASON_REMOVE_OBJECTS_DEACTIVATE (1 << 13)
+#define MOD_REASON_TOO_MANY_OBJECTS          (1 << 14)
+#define MOD_REASON_STATIC_DATA_ADDED         (1 << 15)
+#define MOD_REASON_STATIC_DATA_REMOVED       (1 << 16)
+#define MOD_REASON_STATIC_DATA_CHANGED       (1 << 17)
+#define MOD_REASON_EXPIRE_DAYNIGHTDIFF       (1 << 18)
+#define MOD_REASON_UNKNOWN                   (1 << 19)
+
+////
+//// MapBlock itself
+////
+
+class MapBlock /*: public NodeContainer*/
 {
 public:
-       MapBlock(NodeContainer *parent, v3s16 pos, bool dummy=false);
+       MapBlock(Map *parent, v3s16 pos, IGameDef *gamedef, bool dummy=false);
        ~MapBlock();
-       
-       virtual u16 nodeContainerId() const
+
+       /*virtual u16 nodeContainerId() const
        {
                return NODECONTAINER_ID_MAPBLOCK;
-       }
-       
-       NodeContainer * getParent()
+       }*/
+
+       Map * getParent()
        {
                return m_parent;
        }
 
        void reallocate()
        {
-               if(data != NULL)
-                       delete[] data;
-               u32 l = MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
-               data = new MapNode[l];
-               for(u32 i=0; i<l; i++){
-                       data[i] = MapNode();
-               }
-               setChangedFlag();
+               delete[] data;
+               data = new MapNode[nodecount];
+               for (u32 i = 0; i < nodecount; i++)
+                       data[i] = MapNode(CONTENT_IGNORE);
+
+               raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_REALLOCATE);
        }
 
-       /*
-               Flags
-       */
+       ////
+       //// Modification tracking methods
+       ////
+       void raiseModified(u32 mod, u32 reason=MOD_REASON_UNKNOWN)
+       {
+               if (mod > m_modified) {
+                       m_modified = mod;
+                       m_modified_reason = reason;
+                       if (m_modified >= MOD_STATE_WRITE_AT_UNLOAD)
+                               m_disk_timestamp = m_timestamp;
+               } else if (mod == m_modified) {
+                       m_modified_reason |= reason;
+               }
+       }
 
-       bool isDummy()
+       inline u32 getModified()
        {
-               return (data == NULL);
+               return m_modified;
        }
-       void unDummify()
+
+       inline u32 getModifiedReason()
        {
-               assert(isDummy());
-               reallocate();
+               return m_modified_reason;
        }
-       
-       /*
-               This is called internally or externally after the block is
-               modified, so that the block is saved and possibly not deleted from
-               memory.
-       */
-       void setChangedFlag()
+
+       std::string getModifiedReasonString();
+
+       inline void resetModified()
        {
-               changed = true;
+               m_modified = MOD_STATE_CLEAN;
+               m_modified_reason = 0;
        }
-       void resetChangedFlag()
+
+       ////
+       //// Flags
+       ////
+
+       inline bool isDummy()
        {
-               changed = false;
+               return (data == NULL);
        }
-       bool getChangedFlag()
+
+       inline void unDummify()
        {
-               return changed;
+               assert(isDummy()); // Pre-condition
+               reallocate();
        }
 
-       bool getIsUnderground()
+       // is_underground getter/setter
+       inline bool getIsUnderground()
        {
                return is_underground;
        }
-       void setIsUnderground(bool a_is_underground)
+
+       inline void setIsUnderground(bool a_is_underground)
        {
                is_underground = a_is_underground;
-               setChangedFlag();
+               raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_SET_IS_UNDERGROUND);
        }
 
-#ifndef SERVER
-       void setMeshExpired(bool expired)
-       {
-               m_mesh_expired = expired;
-       }
-       
-       bool getMeshExpired()
+       inline void setLightingExpired(bool expired)
        {
-               return m_mesh_expired;
+               if (expired != m_lighting_expired){
+                       m_lighting_expired = expired;
+                       raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_SET_LIGHTING_EXPIRED);
+               }
        }
-#endif
 
-       void setLightingExpired(bool expired)
-       {
-               m_lighting_expired = expired;
-               setChangedFlag();
-       }
-       bool getLightingExpired()
+       inline bool getLightingExpired()
        {
                return m_lighting_expired;
        }
 
-       /*bool isFullyGenerated()
+       inline bool isGenerated()
        {
-               return !m_not_fully_generated;
+               return m_generated;
        }
-       void setFullyGenerated(bool b)
+
+       inline void setGenerated(bool b)
        {
-               setChangedFlag();
-               m_not_fully_generated = !b;
-       }*/
+               if (b != m_generated) {
+                       raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_SET_GENERATED);
+                       m_generated = b;
+               }
+       }
 
-       bool isValid()
+       inline bool isValid()
        {
-               if(m_lighting_expired)
+               if (m_lighting_expired)
                        return false;
-               if(data == NULL)
+               if (data == NULL)
                        return false;
                return true;
        }
 
-       /*
-               Position stuff
-       */
+       ////
+       //// Position stuff
+       ////
 
-       v3s16 getPos()
+       inline v3s16 getPos()
        {
                return m_pos;
        }
-               
-       v3s16 getPosRelative()
+
+       inline v3s16 getPosRelative()
        {
-               return m_pos * MAP_BLOCKSIZE;
+               return m_pos_relative;
        }
-               
-       core::aabbox3d<s16> getBox()
+
+       inline core::aabbox3d<s16> getBox()
        {
                return core::aabbox3d<s16>(getPosRelative(),
                                getPosRelative()
@@ -216,336 +270,269 @@ public:
                                - v3s16(1,1,1));
        }
 
-       /*
-               Regular MapNode get-setters
-       */
-       
-       bool isValidPosition(v3s16 p)
+       ////
+       //// Regular MapNode get-setters
+       ////
+
+       inline bool isValidPosition(s16 x, s16 y, s16 z)
        {
-               if(data == NULL)
-                       return false;
-               return (p.X >= 0 && p.X < MAP_BLOCKSIZE
-                               && p.Y >= 0 && p.Y < MAP_BLOCKSIZE
-                               && p.Z >= 0 && p.Z < MAP_BLOCKSIZE);
+               return data != NULL
+                       && x >= 0 && x < MAP_BLOCKSIZE
+                       && y >= 0 && y < MAP_BLOCKSIZE
+                       && z >= 0 && z < MAP_BLOCKSIZE;
        }
 
-       MapNode getNode(s16 x, s16 y, s16 z)
+       inline bool isValidPosition(v3s16 p)
        {
-               if(data == NULL)
-                       throw InvalidPositionException();
-               if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
+               return isValidPosition(p.X, p.Y, p.Z);
        }
-       
-       MapNode getNode(v3s16 p)
+
+       inline MapNode getNode(s16 x, s16 y, s16 z, bool *valid_position)
        {
-               return getNode(p.X, p.Y, p.Z);
+               *valid_position = isValidPosition(x, y, z);
+
+               if (!*valid_position)
+                       return MapNode(CONTENT_IGNORE);
+
+               return data[z * zstride + y * ystride + x];
        }
-       
-       MapNode getNodeNoEx(v3s16 p)
+
+       inline MapNode getNode(v3s16 p, bool *valid_position)
        {
-               try{
-                       return getNode(p.X, p.Y, p.Z);
-               }catch(InvalidPositionException &e){
-                       return MapNode(CONTENT_IGNORE);
-               }
+               return getNode(p.X, p.Y, p.Z, valid_position);
        }
-       
-       void setNode(s16 x, s16 y, s16 z, MapNode & n)
+
+       inline MapNode getNodeNoEx(v3s16 p)
        {
-               if(data == NULL)
+               bool is_valid;
+               MapNode node = getNode(p.X, p.Y, p.Z, &is_valid);
+               return is_valid ? node : MapNode(CONTENT_IGNORE);
+       }
+
+       inline void setNode(s16 x, s16 y, s16 z, MapNode & n)
+       {
+               if (!isValidPosition(x, y, z))
                        throw InvalidPositionException();
-               if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
-               setChangedFlag();
+
+               data[z * zstride + y * ystride + x] = n;
+               raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_SET_NODE);
        }
-       
-       void setNode(v3s16 p, MapNode & n)
+
+       inline void setNode(v3s16 p, MapNode & n)
        {
                setNode(p.X, p.Y, p.Z, n);
        }
 
-       /*
-               Non-checking variants of the above
-       */
+       ////
+       //// Non-checking variants of the above
+       ////
 
-       MapNode getNodeNoCheck(s16 x, s16 y, s16 z)
+       inline MapNode getNodeNoCheck(s16 x, s16 y, s16 z, bool *valid_position)
        {
-               if(data == NULL)
-                       throw InvalidPositionException();
-               return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
+               *valid_position = data != NULL;
+               if (!valid_position)
+                       return MapNode(CONTENT_IGNORE);
+
+               return data[z * zstride + y * ystride + x];
        }
-       
-       MapNode getNodeNoCheck(v3s16 p)
+
+       inline MapNode getNodeNoCheck(v3s16 p, bool *valid_position)
        {
-               return getNodeNoCheck(p.X, p.Y, p.Z);
+               return getNodeNoCheck(p.X, p.Y, p.Z, valid_position);
        }
-       
-       void setNodeNoCheck(s16 x, s16 y, s16 z, MapNode & n)
+
+       inline void setNodeNoCheck(s16 x, s16 y, s16 z, MapNode & n)
        {
-               if(data == NULL)
+               if (data == NULL)
                        throw InvalidPositionException();
-               data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
-               setChangedFlag();
+
+               data[z * zstride + y * ystride + x] = n;
+               raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_SET_NODE_NO_CHECK);
        }
-       
-       void setNodeNoCheck(v3s16 p, MapNode & n)
+
+       inline void setNodeNoCheck(v3s16 p, MapNode & n)
        {
                setNodeNoCheck(p.X, p.Y, p.Z, n);
        }
 
-       /*
-               These functions consult the parent container if the position
-               is not valid on this MapBlock.
-       */
+       // These functions consult the parent container if the position
+       // is not valid on this MapBlock.
        bool isValidPositionParent(v3s16 p);
-       MapNode getNodeParent(v3s16 p);
+       MapNode getNodeParent(v3s16 p, bool *is_valid_position = NULL);
        void setNodeParent(v3s16 p, MapNode & n);
-       MapNode getNodeParentNoEx(v3s16 p);
-
-       void drawbox(s16 x0, s16 y0, s16 z0, s16 w, s16 h, s16 d, MapNode node)
-       {
-               for(u16 z=0; z<d; z++)
-                       for(u16 y=0; y<h; y++)
-                               for(u16 x=0; x<w; x++)
-                                       setNode(x0+x, y0+y, z0+z, node);
-       }
 
-       /*
-               Graphics-related methods
-       */
-       
-       /*// A quick version with nodes passed as parameters
-       u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
-                       v3s16 face_dir);*/
-       /*// A more convenient version
-       u8 getFaceLight(u32 daynight_ratio, v3s16 p, v3s16 face_dir)
-       {
-               return getFaceLight(daynight_ratio,
-                               getNodeParentNoEx(p),
-                               getNodeParentNoEx(p + face_dir),
-                               face_dir);
-       }*/
-       u8 getFaceLight2(u32 daynight_ratio, v3s16 p, v3s16 face_dir)
+       inline void drawbox(s16 x0, s16 y0, s16 z0, s16 w, s16 h, s16 d, MapNode node)
        {
-               return getFaceLight(daynight_ratio,
-                               getNodeParentNoEx(p),
-                               getNodeParentNoEx(p + face_dir),
-                               face_dir);
+               for (u16 z = 0; z < d; z++)
+               for (u16 y = 0; y < h; y++)
+               for (u16 x = 0; x < w; x++)
+                       setNode(x0 + x, y0 + y, z0 + z, node);
        }
-       
-#ifndef SERVER // Only on client
 
-#if 1
-       /*
-               Thread-safely updates the whole mesh of the mapblock.
-               NOTE: Prefer generating the mesh separately and then using
-               replaceMesh().
-       */
-       void updateMesh(u32 daynight_ratio);
-#endif
-       // Replace the mesh with a new one
-       void replaceMesh(scene::SMesh *mesh_new);
-#endif
-       
        // See comments in mapblock.cpp
-       bool propagateSunlight(core::map<v3s16, bool> & light_sources,
-                       bool remove_light=false, bool *black_air_left=NULL);
-       
+       bool propagateSunlight(std::set<v3s16> &light_sources,
+               bool remove_light=false, bool *black_air_left=NULL);
+
        // Copies data to VoxelManipulator to getPosRelative()
        void copyTo(VoxelManipulator &dst);
+
        // Copies data from VoxelManipulator getPosRelative()
        void copyFrom(VoxelManipulator &dst);
 
-       /*
-               MapBlockObject stuff
-               DEPRECATED
-       */
-       
-       void serializeObjects(std::ostream &os, u8 version)
+       // Update day-night lighting difference flag.
+       // Sets m_day_night_differs to appropriate value.
+       // These methods don't care about neighboring blocks.
+       void actuallyUpdateDayNightDiff();
+
+       // Call this to schedule what the previous function does to be done
+       // when the value is actually needed.
+       void expireDayNightDiff();
+
+       inline bool getDayNightDiff()
        {
-               m_objects.serialize(os, version);
+               if (m_day_night_differs_expired)
+                       actuallyUpdateDayNightDiff();
+               return m_day_night_differs;
        }
-       // If smgr!=NULL, new objects are added to the scene
-       void updateObjects(std::istream &is, u8 version,
-                       scene::ISceneManager *smgr, u32 daynight_ratio)
-       {
-               m_objects.update(is, version, smgr, daynight_ratio);
 
-               setChangedFlag();
-       }
-       void clearObjects()
-       {
-               m_objects.clear();
+       ////
+       //// Miscellaneous stuff
+       ////
 
-               setChangedFlag();
-       }
-       void addObject(MapBlockObject *object)
-                       throw(ContainerFullException, AlreadyExistsException)
-       {
-               m_objects.add(object);
+       /*
+               Tries to measure ground level.
+               Return value:
+                       -1 = only air
+                       -2 = only ground
+                       -3 = random fail
+                       0...MAP_BLOCKSIZE-1 = ground level
+       */
+       s16 getGroundLevel(v2s16 p2d);
 
-               setChangedFlag();
-       }
-       void removeObject(s16 id)
-       {
-               m_objects.remove(id);
+       ////
+       //// Timestamp (see m_timestamp)
+       ////
 
-               setChangedFlag();
-       }
-       MapBlockObject * getObject(s16 id)
+       // NOTE: BLOCK_TIMESTAMP_UNDEFINED=0xffffffff means there is no timestamp.
+
+       inline void setTimestamp(u32 time)
        {
-               return m_objects.get(id);
+               m_timestamp = time;
+               raiseModified(MOD_STATE_WRITE_AT_UNLOAD, MOD_REASON_SET_TIMESTAMP);
        }
-       JMutexAutoLock * getObjectLock()
+
+       inline void setTimestampNoChangedFlag(u32 time)
        {
-               return m_objects.getLock();
+               m_timestamp = time;
        }
 
-       /*
-               Moves objects, deletes objects and spawns new objects
-       */
-       void stepObjects(float dtime, bool server, u32 daynight_ratio);
-
-       // origin is relative to block
-       void getObjects(v3f origin, f32 max_d,
-                       core::array<DistanceSortedObject> &dest)
+       inline u32 getTimestamp()
        {
-               m_objects.getObjects(origin, max_d, dest);
+               return m_timestamp;
        }
 
-       s32 getObjectCount()
+       inline u32 getDiskTimestamp()
        {
-               return m_objects.getCount();
+               return m_disk_timestamp;
        }
 
-#ifndef SERVER // Only on client
-       /*
-               Methods for setting temporary modifications to nodes for
-               drawing
+       ////
+       //// Usage timer (see m_usage_timer)
+       ////
 
-               returns true if the mod was different last time
-       */
-       bool setTempMod(v3s16 p, const NodeMod &mod)
+       inline void resetUsageTimer()
        {
-               /*dstream<<"setTempMod called on block"
-                               <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
-                               <<", mod.type="<<mod.type
-                               <<", mod.param="<<mod.param
-                               <<std::endl;*/
-               JMutexAutoLock lock(m_temp_mods_mutex);
-
-               return m_temp_mods.set(p, mod);
+               m_usage_timer = 0;
        }
-       // Returns true if there was one
-       bool getTempMod(v3s16 p, NodeMod *mod)
-       {
-               JMutexAutoLock lock(m_temp_mods_mutex);
 
-               return m_temp_mods.get(p, mod);
+       inline void incrementUsageTimer(float dtime)
+       {
+               m_usage_timer += dtime;
        }
-       bool clearTempMod(v3s16 p)
+
+       inline float getUsageTimer()
        {
-               JMutexAutoLock lock(m_temp_mods_mutex);
+               return m_usage_timer;
+       }
+
+       ////
+       //// Reference counting (see m_refcount)
+       ////
 
-               return m_temp_mods.clear(p);
+       inline void refGrab()
+       {
+               m_refcount++;
        }
-       bool clearTempMods()
+
+       inline void refDrop()
        {
-               JMutexAutoLock lock(m_temp_mods_mutex);
-               
-               return m_temp_mods.clear();
+               m_refcount--;
        }
-       void copyTempMods(NodeModMap &dst)
+
+       inline int refGet()
        {
-               JMutexAutoLock lock(m_temp_mods_mutex);
-               m_temp_mods.copy(dst);
+               return m_refcount;
        }
-#endif
 
-       /*
-               Update day-night lighting difference flag.
-               
-               Sets m_day_night_differs to appropriate value.
-               
-               These methods don't care about neighboring blocks.
-               It means that to know if a block really doesn't need a mesh
-               update between day and night, the neighboring blocks have
-               to be taken into account. Use Map::dayNightDiffed().
-       */
-       void updateDayNightDiff();
+       ////
+       //// Node Timers
+       ////
 
-       bool dayNightDiffed()
+       inline NodeTimer getNodeTimer(v3s16 p)
        {
-               return m_day_night_differs;
+               return m_node_timers.get(p);
        }
 
-       /*
-               Miscellaneous stuff
-       */
-       
-       /*
-               Tries to measure ground level.
-               Return value:
-                       -1 = only air
-                       -2 = only ground
-                       -3 = random fail
-                       0...MAP_BLOCKSIZE-1 = ground level
-       */
-       s16 getGroundLevel(v2s16 p2d);
-
-       /*
-               Timestamp (see m_timestamp)
-               NOTE: BLOCK_TIMESTAMP_UNDEFINED=0xffffffff means there is no timestamp.
-       */
-       void setTimestamp(u32 time)
+       inline void removeNodeTimer(v3s16 p)
        {
-               m_timestamp = time;
-               setChangedFlag();
+               m_node_timers.remove(p);
        }
-       void setTimestampNoChangedFlag(u32 time)
+
+       inline void setNodeTimer(const NodeTimer &t)
        {
-               m_timestamp = time;
+               m_node_timers.set(t);
        }
-       u32 getTimestamp()
+
+       inline void clearNodeTimers()
        {
-               return m_timestamp;
+               m_node_timers.clear();
        }
 
-       /*
-               Serialization
-       */
-       
+       ////
+       //// Serialization
+       ///
+
        // These don't write or read version by itself
-       void serialize(std::ostream &os, u8 version);
-       void deSerialize(std::istream &is, u8 version);
-       // Used after the basic ones when writing on disk (serverside)
-       void serializeDiskExtra(std::ostream &os, u8 version);
-       void deSerializeDiskExtra(std::istream &is, u8 version);
+       // Set disk to true for on-disk format, false for over-the-network format
+       // Precondition: version >= SER_FMT_VER_LOWEST_WRITE
+       void serialize(std::ostream &os, u8 version, bool disk);
+       // If disk == true: In addition to doing other things, will add
+       // unknown blocks from id-name mapping to wndef
+       void deSerialize(std::istream &is, u8 version, bool disk);
+
+       void serializeNetworkSpecific(std::ostream &os, u16 net_proto_version);
+       void deSerializeNetworkSpecific(std::istream &is);
 
 private:
        /*
                Private methods
        */
 
+       void deSerialize_pre22(std::istream &is, u8 version, bool disk);
+
        /*
                Used only internally, because changes can't be tracked
        */
 
-       MapNode & getNodeRef(s16 x, s16 y, s16 z)
+       inline MapNode &getNodeRef(s16 x, s16 y, s16 z)
        {
-               if(data == NULL)
+               if (!isValidPosition(x, y, z))
                        throw InvalidPositionException();
-               if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
-               return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
+
+               return data[z * zstride + y * ystride + x];
        }
-       MapNode & getNodeRef(v3s16 &p)
+
+       inline MapNode &getNodeRef(v3s16 &p)
        {
                return getNodeRef(p.X, p.Y, p.Z);
        }
@@ -556,35 +543,51 @@ public:
        */
 
 #ifndef SERVER // Only on client
-       scene::SMesh *mesh;
-       JMutex mesh_mutex;
+       MapBlockMesh *mesh;
 #endif
-       
+
        NodeMetadataList m_node_metadata;
+       NodeTimerList m_node_timers;
        StaticObjectList m_static_objects;
-       
+
+       static const u32 ystride = MAP_BLOCKSIZE;
+       static const u32 zstride = MAP_BLOCKSIZE * MAP_BLOCKSIZE;
+
+       static const u32 nodecount = MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
+
 private:
        /*
                Private member variables
        */
 
        // NOTE: Lots of things rely on this being the Map
-       NodeContainer *m_parent;
+       Map *m_parent;
        // Position in blocks on parent
        v3s16 m_pos;
-       
+
+       /* This is the precalculated m_pos_relative value
+       * This caches the value, improving performance by removing 3 s16 multiplications
+       * at runtime on each getPosRelative call
+       * For a 5 minutes runtime with valgrind this removes 3 * 19M s16 multiplications
+       * The gain can be estimated in Release Build to 3 * 100M multiply operations for 5 mins
+       */
+       v3s16 m_pos_relative;
+
+       IGameDef *m_gamedef;
+
        /*
                If NULL, block is a dummy block.
                Dummy blocks are used for caching not-found-on-disk blocks.
        */
-       MapNode * data;
+       MapNode *data;
 
        /*
                - On the server, this is used for telling whether the
-                 block has been changed from the one on disk.
+                 block has been modified from the one on disk.
                - On the client, this is used for nothing.
        */
-       bool changed;
+       u32 m_modified;
+       u32 m_modified_reason;
 
        /*
                When propagating sunlight and the above block doesn't exist,
@@ -604,43 +607,58 @@ private:
                If this is true, lighting might be wrong or right.
        */
        bool m_lighting_expired;
-       
+
        // Whether day and night lighting differs
        bool m_day_night_differs;
-       
-       // DEPRECATED
-       MapBlockObjectList m_objects;
+       bool m_day_night_differs_expired;
+
+       bool m_generated;
 
-#ifndef SERVER // Only on client
-       /*
-               Set to true if the mesh has been ordered to be updated
-               sometime in the background.
-               In practice this is set when the day/night lighting switches.
-       */
-       bool m_mesh_expired;
-       
-       // Temporary modifications to nodes
-       // These are only used when drawing
-       NodeModMap m_temp_mods;
-       JMutex m_temp_mods_mutex;
-#endif
-       
        /*
                When block is removed from active blocks, this is set to gametime.
                Value BLOCK_TIMESTAMP_UNDEFINED=0xffffffff means there is no timestamp.
        */
        u32 m_timestamp;
+       // The on-disk (or to-be on-disk) timestamp value
+       u32 m_disk_timestamp;
+
+       /*
+               When the block is accessed, this is set to 0.
+               Map will unload the block when this reaches a timeout.
+       */
+       float m_usage_timer;
+
+       /*
+               Reference count; currently used for determining if this block is in
+               the list of blocks to be drawn.
+       */
+       int m_refcount;
 };
 
+typedef std::vector<MapBlock*> MapBlockVect;
+
+inline bool objectpos_over_limit(v3f p)
+{
+       const static float map_gen_limit_bs = MYMIN(MAX_MAP_GENERATION_LIMIT,
+               g_settings->getU16("map_generation_limit")) * BS;
+       return (p.X < -map_gen_limit_bs
+               || p.X >  map_gen_limit_bs
+               || p.Y < -map_gen_limit_bs
+               || p.Y >  map_gen_limit_bs
+               || p.Z < -map_gen_limit_bs
+               || p.Z >  map_gen_limit_bs);
+}
+
 inline bool blockpos_over_limit(v3s16 p)
 {
-       return
-         (p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
-       || p.X >  MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
-       || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
-       || p.Y >  MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
-       || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
-       || p.Z >  MAP_GENERATION_LIMIT / MAP_BLOCKSIZE);
+       const static u16 map_gen_limit = MYMIN(MAX_MAP_GENERATION_LIMIT,
+               g_settings->getU16("map_generation_limit"));
+       return (p.X < -map_gen_limit / MAP_BLOCKSIZE
+                       || p.X >  map_gen_limit / MAP_BLOCKSIZE
+                       || p.Y < -map_gen_limit / MAP_BLOCKSIZE
+                       || p.Y >  map_gen_limit / MAP_BLOCKSIZE
+                       || p.Z < -map_gen_limit / MAP_BLOCKSIZE
+                       || p.Z >  map_gen_limit / MAP_BLOCKSIZE);
 }
 
 /*
@@ -661,5 +679,19 @@ inline s16 getNodeBlockY(s16 y)
        return getContainerPos(y, MAP_BLOCKSIZE);
 }
 
-#endif
+inline void getNodeBlockPosWithOffset(const v3s16 &p, v3s16 &block, v3s16 &offset)
+{
+       getContainerPosWithOffset(p, MAP_BLOCKSIZE, block, offset);
+}
+
+inline void getNodeSectorPosWithOffset(const v2s16 &p, v2s16 &block, v2s16 &offset)
+{
+       getContainerPosWithOffset(p, MAP_BLOCKSIZE, block, offset);
+}
+
+/*
+       Get a quick string to describe what a block actually contains
+*/
+std::string analyze_block(MapBlock *block);
 
+#endif