585 lines
13 KiB
C++
585 lines
13 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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 "nodemetadata.h"
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#include "nodetimer.h"
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#include "modifiedstate.h"
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class Map;
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class NodeMetadataList;
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class IGameDef;
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class MapBlockMesh;
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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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// 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, IGameDef *gamedef, 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, "reallocate");
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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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// m_modified methods
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void raiseModified(u32 mod, const std::string &reason="unknown")
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{
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if(mod > m_modified){
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m_modified = mod;
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m_modified_reason = reason;
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m_modified_reason_too_long = false;
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if(m_modified >= MOD_STATE_WRITE_AT_UNLOAD){
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m_disk_timestamp = m_timestamp;
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}
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} else if(mod == m_modified){
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if(!m_modified_reason_too_long){
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if(m_modified_reason.size() < 40)
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m_modified_reason += ", " + reason;
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else{
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m_modified_reason += "...";
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m_modified_reason_too_long = true;
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}
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}
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}
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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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std::string getModifiedReason()
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{
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return m_modified_reason;
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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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m_modified_reason = "none";
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m_modified_reason_too_long = false;
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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, "setIsUnderground");
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}
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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, "setLightingExpired");
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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, "setGenerated");
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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, "setNode");
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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, "setNodeNoCheck");
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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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// 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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/*
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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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*/
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void actuallyUpdateDayNightDiff();
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/*
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Call this to schedule what the previous function does to be done
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when the value is actually needed.
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*/
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void expireDayNightDiff();
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bool getDayNightDiff()
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{
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if(m_day_night_differs_expired)
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actuallyUpdateDayNightDiff();
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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, "setTimestamp");
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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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u32 getDiskTimestamp()
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{
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return m_disk_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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// Set disk to true for on-disk format, false for over-the-network format
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void serialize(std::ostream &os, u8 version, bool disk);
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// If disk == true: In addition to doing other things, will add
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// unknown blocks from id-name mapping to wndef
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void deSerialize(std::istream &is, u8 version, bool disk);
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private:
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/*
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Private methods
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*/
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void serialize_pre22(std::ostream &os, u8 version, bool disk);
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void deSerialize_pre22(std::istream &is, u8 version, bool disk);
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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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MapBlockMesh *mesh;
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//JMutex mesh_mutex;
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#endif
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NodeMetadataList m_node_metadata;
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NodeTimerList m_node_timers;
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StaticObjectList m_static_objects;
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private:
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/*
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Private member variables
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*/
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// NOTE: Lots of things rely on this being the Map
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Map *m_parent;
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// Position in blocks on parent
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v3s16 m_pos;
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IGameDef *m_gamedef;
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/*
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If NULL, block is a dummy block.
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Dummy blocks are used for caching not-found-on-disk blocks.
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*/
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MapNode * data;
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/*
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- On the server, this is used for telling whether the
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block has been modified from the one on disk.
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- On the client, this is used for nothing.
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*/
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u32 m_modified;
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std::string m_modified_reason;
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bool m_modified_reason_too_long;
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/*
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When propagating sunlight and the above block doesn't exist,
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sunlight is assumed if this is false.
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In practice this is set to true if the block is completely
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undeground with nothing visible above the ground except
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caves.
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*/
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bool is_underground;
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/*
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Set to true if changes has been made that make the old lighting
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values wrong but the lighting hasn't been actually updated.
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If this is false, lighting is exactly right.
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If this is true, lighting might be wrong or right.
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*/
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bool m_lighting_expired;
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// Whether day and night lighting differs
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bool m_day_night_differs;
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bool m_day_night_differs_expired;
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bool m_generated;
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/*
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When block is removed from active blocks, this is set to gametime.
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Value BLOCK_TIMESTAMP_UNDEFINED=0xffffffff means there is no timestamp.
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*/
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u32 m_timestamp;
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// The on-disk (or to-be on-disk) timestamp value
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u32 m_disk_timestamp;
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/*
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When the block is accessed, this is set to 0.
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Map will unload the block when this reaches a timeout.
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*/
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float m_usage_timer;
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};
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inline bool blockpos_over_limit(v3s16 p)
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{
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return
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(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
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|| p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
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|| p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
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|| p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
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|| p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
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|| p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE);
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}
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/*
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Returns the position of the block where the node is located
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*/
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inline v3s16 getNodeBlockPos(v3s16 p)
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{
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return getContainerPos(p, MAP_BLOCKSIZE);
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}
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inline v2s16 getNodeSectorPos(v2s16 p)
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{
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return getContainerPos(p, MAP_BLOCKSIZE);
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}
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inline s16 getNodeBlockY(s16 y)
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{
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return getContainerPos(y, MAP_BLOCKSIZE);
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}
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/*
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Get a quick string to describe what a block actually contains
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*/
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std::string analyze_block(MapBlock *block);
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#endif
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