mirror of
https://github.com/minetest/minetest.git
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693 lines
15 KiB
C++
693 lines
15 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MAPBLOCK_HEADER
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#define MAPBLOCK_HEADER
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#include <jmutex.h>
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#include <jmutexautolock.h>
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#include <exception>
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#include "debug.h"
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#include "common_irrlicht.h"
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#include "mapnode.h"
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#include "exceptions.h"
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#include "serialization.h"
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#include "constants.h"
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#include "voxel.h"
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#include "staticobject.h"
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#include "mapblock_nodemod.h"
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#ifndef SERVER
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#include "mapblock_mesh.h"
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#endif
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class Map;
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class NodeMetadataList;
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class ITextureSource;
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class IGameDef;
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#define BLOCK_TIMESTAMP_UNDEFINED 0xffffffff
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/*// Named by looking towards z+
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enum{
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FACE_BACK=0,
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FACE_TOP,
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FACE_RIGHT,
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FACE_FRONT,
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FACE_BOTTOM,
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FACE_LEFT
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};*/
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enum ModifiedState
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{
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// Has not been modified.
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MOD_STATE_CLEAN = 0,
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MOD_RESERVED1 = 1,
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// Has been modified, and will be saved when being unloaded.
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MOD_STATE_WRITE_AT_UNLOAD = 2,
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MOD_RESERVED3 = 3,
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// Has been modified, and will be saved as soon as possible.
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MOD_STATE_WRITE_NEEDED = 4,
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MOD_RESERVED5 = 5,
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};
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// NOTE: If this is enabled, set MapBlock to be initialized with
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// CONTENT_IGNORE.
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/*enum BlockGenerationStatus
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{
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// Completely non-generated (filled with CONTENT_IGNORE).
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BLOCKGEN_UNTOUCHED=0,
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// Trees or similar might have been blitted from other blocks to here.
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// Otherwise, the block contains CONTENT_IGNORE
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BLOCKGEN_FROM_NEIGHBORS=2,
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// Has been generated, but some neighbors might put some stuff in here
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// when they are generated.
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// Does not contain any CONTENT_IGNORE
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BLOCKGEN_SELF_GENERATED=4,
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// The block and all its neighbors have been generated
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BLOCKGEN_FULLY_GENERATED=6
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};*/
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#if 0
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enum
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{
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NODECONTAINER_ID_MAPBLOCK,
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NODECONTAINER_ID_MAPSECTOR,
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NODECONTAINER_ID_MAP,
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NODECONTAINER_ID_MAPBLOCKCACHE,
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NODECONTAINER_ID_VOXELMANIPULATOR,
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};
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class NodeContainer
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{
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public:
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virtual bool isValidPosition(v3s16 p) = 0;
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virtual MapNode getNode(v3s16 p) = 0;
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virtual void setNode(v3s16 p, MapNode & n) = 0;
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virtual u16 nodeContainerId() const = 0;
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MapNode getNodeNoEx(v3s16 p)
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{
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try{
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return getNode(p);
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}
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catch(InvalidPositionException &e){
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return MapNode(CONTENT_IGNORE);
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}
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}
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};
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#endif
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/*
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MapBlock itself
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*/
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class MapBlock /*: public NodeContainer*/
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{
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public:
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MapBlock(Map *parent, v3s16 pos, bool dummy=false);
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~MapBlock();
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/*virtual u16 nodeContainerId() const
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{
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return NODECONTAINER_ID_MAPBLOCK;
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}*/
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Map * getParent()
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{
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return m_parent;
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}
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void reallocate()
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{
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if(data != NULL)
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delete[] data;
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u32 l = MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
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data = new MapNode[l];
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for(u32 i=0; i<l; i++){
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//data[i] = MapNode();
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data[i] = MapNode(CONTENT_IGNORE);
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}
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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/*
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Flags
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*/
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bool isDummy()
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{
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return (data == NULL);
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}
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void unDummify()
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{
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assert(isDummy());
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reallocate();
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}
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/*
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This is called internally or externally after the block is
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modified, so that the block is saved and possibly not deleted from
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memory.
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*/
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// DEPRECATED, use *Modified()
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void setChangedFlag()
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{
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//dstream<<"Deprecated setChangedFlag() called"<<std::endl;
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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// DEPRECATED, use *Modified()
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void resetChangedFlag()
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{
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//dstream<<"Deprecated resetChangedFlag() called"<<std::endl;
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resetModified();
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}
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// DEPRECATED, use *Modified()
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bool getChangedFlag()
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{
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//dstream<<"Deprecated getChangedFlag() called"<<std::endl;
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if(getModified() == MOD_STATE_CLEAN)
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return false;
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else
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return true;
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}
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// m_modified methods
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void raiseModified(u32 mod)
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{
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m_modified = MYMAX(m_modified, mod);
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}
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u32 getModified()
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{
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return m_modified;
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}
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void resetModified()
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{
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m_modified = MOD_STATE_CLEAN;
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}
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// is_underground getter/setter
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bool getIsUnderground()
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{
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return is_underground;
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}
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void setIsUnderground(bool a_is_underground)
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{
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is_underground = a_is_underground;
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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#ifndef SERVER
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void setMeshExpired(bool expired)
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{
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m_mesh_expired = expired;
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}
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bool getMeshExpired()
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{
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return m_mesh_expired;
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}
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#endif
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void setLightingExpired(bool expired)
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{
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if(expired != m_lighting_expired){
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m_lighting_expired = expired;
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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}
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bool getLightingExpired()
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{
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return m_lighting_expired;
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}
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bool isGenerated()
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{
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return m_generated;
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}
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void setGenerated(bool b)
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{
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if(b != m_generated){
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raiseModified(MOD_STATE_WRITE_NEEDED);
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m_generated = b;
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}
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}
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bool isValid()
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{
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if(m_lighting_expired)
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return false;
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if(data == NULL)
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return false;
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return true;
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}
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/*
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Position stuff
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*/
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v3s16 getPos()
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{
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return m_pos;
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}
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v3s16 getPosRelative()
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{
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return m_pos * MAP_BLOCKSIZE;
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}
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core::aabbox3d<s16> getBox()
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{
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return core::aabbox3d<s16>(getPosRelative(),
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getPosRelative()
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+ v3s16(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE)
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- v3s16(1,1,1));
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}
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/*
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Regular MapNode get-setters
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*/
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bool isValidPosition(v3s16 p)
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{
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if(data == NULL)
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return false;
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return (p.X >= 0 && p.X < MAP_BLOCKSIZE
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&& p.Y >= 0 && p.Y < MAP_BLOCKSIZE
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&& p.Z >= 0 && p.Z < MAP_BLOCKSIZE);
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}
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MapNode getNode(s16 x, s16 y, s16 z)
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{
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if(data == NULL)
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throw InvalidPositionException();
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if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
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return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
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}
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MapNode getNode(v3s16 p)
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{
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return getNode(p.X, p.Y, p.Z);
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}
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MapNode getNodeNoEx(v3s16 p)
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{
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try{
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return getNode(p.X, p.Y, p.Z);
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}catch(InvalidPositionException &e){
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return MapNode(CONTENT_IGNORE);
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}
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}
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void setNode(s16 x, s16 y, s16 z, MapNode & n)
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{
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if(data == NULL)
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throw InvalidPositionException();
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if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
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data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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void setNode(v3s16 p, MapNode & n)
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{
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setNode(p.X, p.Y, p.Z, n);
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}
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/*
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Non-checking variants of the above
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*/
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MapNode getNodeNoCheck(s16 x, s16 y, s16 z)
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{
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if(data == NULL)
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throw InvalidPositionException();
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return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
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}
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MapNode getNodeNoCheck(v3s16 p)
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{
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return getNodeNoCheck(p.X, p.Y, p.Z);
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}
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void setNodeNoCheck(s16 x, s16 y, s16 z, MapNode & n)
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{
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if(data == NULL)
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throw InvalidPositionException();
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data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
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raiseModified(MOD_STATE_WRITE_NEEDED);
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}
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void setNodeNoCheck(v3s16 p, MapNode & n)
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{
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setNodeNoCheck(p.X, p.Y, p.Z, n);
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}
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/*
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These functions consult the parent container if the position
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is not valid on this MapBlock.
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*/
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bool isValidPositionParent(v3s16 p);
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MapNode getNodeParent(v3s16 p);
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void setNodeParent(v3s16 p, MapNode & n);
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MapNode getNodeParentNoEx(v3s16 p);
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void drawbox(s16 x0, s16 y0, s16 z0, s16 w, s16 h, s16 d, MapNode node)
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{
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for(u16 z=0; z<d; z++)
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for(u16 y=0; y<h; y++)
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for(u16 x=0; x<w; x++)
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setNode(x0+x, y0+y, z0+z, node);
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}
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/*
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Graphics-related methods
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*/
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/*// A quick version with nodes passed as parameters
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u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
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v3s16 face_dir);*/
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/*// A more convenient version
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u8 getFaceLight(u32 daynight_ratio, v3s16 p, v3s16 face_dir)
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{
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return getFaceLight(daynight_ratio,
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getNodeParentNoEx(p),
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getNodeParentNoEx(p + face_dir),
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face_dir);
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}*/
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u8 getFaceLight2(u32 daynight_ratio, v3s16 p, v3s16 face_dir)
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{
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return getFaceLight(daynight_ratio,
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getNodeParentNoEx(p),
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getNodeParentNoEx(p + face_dir),
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face_dir);
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}
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#ifndef SERVER // Only on client
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#if 1
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/*
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Thread-safely updates the whole mesh of the mapblock.
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NOTE: Prefer generating the mesh separately and then using
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replaceMesh().
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*/
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void updateMesh(u32 daynight_ratio, ITextureSource *tsrc);
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#endif
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// Replace the mesh with a new one
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void replaceMesh(scene::SMesh *mesh_new);
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#endif
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// See comments in mapblock.cpp
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bool propagateSunlight(core::map<v3s16, bool> & light_sources,
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bool remove_light=false, bool *black_air_left=NULL);
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// Copies data to VoxelManipulator to getPosRelative()
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void copyTo(VoxelManipulator &dst);
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// Copies data from VoxelManipulator getPosRelative()
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void copyFrom(VoxelManipulator &dst);
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#ifndef SERVER // Only on client
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/*
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Methods for setting temporary modifications to nodes for
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drawing
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returns true if the mod was different last time
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*/
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bool setTempMod(v3s16 p, const NodeMod &mod)
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{
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/*dstream<<"setTempMod called on block"
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<<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
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<<", mod.type="<<mod.type
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<<", mod.param="<<mod.param
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<<std::endl;*/
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JMutexAutoLock lock(m_temp_mods_mutex);
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return m_temp_mods.set(p, mod);
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}
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// Returns true if there was one
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bool getTempMod(v3s16 p, NodeMod *mod)
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{
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JMutexAutoLock lock(m_temp_mods_mutex);
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return m_temp_mods.get(p, mod);
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}
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bool clearTempMod(v3s16 p)
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{
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JMutexAutoLock lock(m_temp_mods_mutex);
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return m_temp_mods.clear(p);
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}
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bool clearTempMods()
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{
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JMutexAutoLock lock(m_temp_mods_mutex);
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return m_temp_mods.clear();
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}
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void copyTempMods(NodeModMap &dst)
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{
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JMutexAutoLock lock(m_temp_mods_mutex);
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m_temp_mods.copy(dst);
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}
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#endif
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/*
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Update day-night lighting difference flag.
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Sets m_day_night_differs to appropriate value.
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These methods don't care about neighboring blocks.
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It means that to know if a block really doesn't need a mesh
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update between day and night, the neighboring blocks have
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to be taken into account. Use Map::dayNightDiffed().
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*/
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void updateDayNightDiff();
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bool dayNightDiffed()
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{
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return m_day_night_differs;
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}
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/*
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Miscellaneous stuff
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*/
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/*
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Tries to measure ground level.
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Return value:
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-1 = only air
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-2 = only ground
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-3 = random fail
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0...MAP_BLOCKSIZE-1 = ground level
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*/
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s16 getGroundLevel(v2s16 p2d);
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/*
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Timestamp (see m_timestamp)
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NOTE: BLOCK_TIMESTAMP_UNDEFINED=0xffffffff means there is no timestamp.
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*/
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void setTimestamp(u32 time)
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{
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m_timestamp = time;
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raiseModified(MOD_STATE_WRITE_AT_UNLOAD);
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}
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void setTimestampNoChangedFlag(u32 time)
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{
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m_timestamp = time;
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}
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u32 getTimestamp()
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{
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return m_timestamp;
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}
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/*
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See m_usage_timer
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*/
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void resetUsageTimer()
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{
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m_usage_timer = 0;
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}
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void incrementUsageTimer(float dtime)
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{
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m_usage_timer += dtime;
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}
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u32 getUsageTimer()
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{
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return m_usage_timer;
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}
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/*
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Serialization
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*/
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// These don't write or read version by itself
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void serialize(std::ostream &os, u8 version);
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void deSerialize(std::istream &is, u8 version, IGameDef *gamedef);
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// Used after the basic ones when writing on disk (serverside)
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void serializeDiskExtra(std::ostream &os, u8 version);
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void deSerializeDiskExtra(std::istream &is, u8 version);
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private:
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/*
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Private methods
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*/
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/*
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Used only internally, because changes can't be tracked
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*/
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MapNode & getNodeRef(s16 x, s16 y, s16 z)
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{
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if(data == NULL)
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throw InvalidPositionException();
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if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
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if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
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return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
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}
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MapNode & getNodeRef(v3s16 &p)
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{
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return getNodeRef(p.X, p.Y, p.Z);
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}
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public:
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/*
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Public member variables
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*/
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#ifndef SERVER // Only on client
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scene::SMesh *mesh;
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|
JMutex mesh_mutex;
|
|
#endif
|
|
|
|
NodeMetadataList *m_node_metadata;
|
|
StaticObjectList m_static_objects;
|
|
|
|
private:
|
|
/*
|
|
Private member variables
|
|
*/
|
|
|
|
// NOTE: Lots of things rely on this being the Map
|
|
Map *m_parent;
|
|
// Position in blocks on parent
|
|
v3s16 m_pos;
|
|
|
|
/*
|
|
If NULL, block is a dummy block.
|
|
Dummy blocks are used for caching not-found-on-disk blocks.
|
|
*/
|
|
MapNode * data;
|
|
|
|
/*
|
|
- On the server, this is used for telling whether the
|
|
block has been modified from the one on disk.
|
|
- On the client, this is used for nothing.
|
|
*/
|
|
u32 m_modified;
|
|
|
|
/*
|
|
When propagating sunlight and the above block doesn't exist,
|
|
sunlight is assumed if this is false.
|
|
|
|
In practice this is set to true if the block is completely
|
|
undeground with nothing visible above the ground except
|
|
caves.
|
|
*/
|
|
bool is_underground;
|
|
|
|
/*
|
|
Set to true if changes has been made that make the old lighting
|
|
values wrong but the lighting hasn't been actually updated.
|
|
|
|
If this is false, lighting is exactly right.
|
|
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;
|
|
|
|
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;
|
|
|
|
/*
|
|
When the block is accessed, this is set to 0.
|
|
Map will unload the block when this reaches a timeout.
|
|
*/
|
|
float m_usage_timer;
|
|
};
|
|
|
|
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);
|
|
}
|
|
|
|
/*
|
|
Returns the position of the block where the node is located
|
|
*/
|
|
inline v3s16 getNodeBlockPos(v3s16 p)
|
|
{
|
|
return getContainerPos(p, MAP_BLOCKSIZE);
|
|
}
|
|
|
|
inline v2s16 getNodeSectorPos(v2s16 p)
|
|
{
|
|
return getContainerPos(p, MAP_BLOCKSIZE);
|
|
}
|
|
|
|
inline s16 getNodeBlockY(s16 y)
|
|
{
|
|
return getContainerPos(y, MAP_BLOCKSIZE);
|
|
}
|
|
|
|
/*
|
|
Get a quick string to describe what a block actually contains
|
|
*/
|
|
std::string analyze_block(MapBlock *block);
|
|
|
|
#endif
|
|
|