minetest/src/map.h

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/*
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Minetest
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Copyright (C) 2010-2013 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 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 Lesser General Public License for more details.
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.
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*/
#pragma once
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#include <iostream>
#include <sstream>
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#include <set>
#include <map>
#include <list>
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#include "irrlichttypes_bloated.h"
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#include "mapnode.h"
#include "constants.h"
#include "voxel.h"
#include "modifiedstate.h"
#include "util/container.h"
#include "util/metricsbackend.h"
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#include "nodetimer.h"
#include "map_settings_manager.h"
#include "debug.h"
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class Settings;
class MapDatabase;
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class ClientMap;
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class MapSector;
class ServerMapSector;
class MapBlock;
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class NodeMetadata;
class IGameDef;
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class IRollbackManager;
class EmergeManager;
class MetricsBackend;
class ServerEnvironment;
struct BlockMakeData;
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/*
MapEditEvent
*/
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enum MapEditEventType{
// Node added (changed from air or something else to something)
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MEET_ADDNODE,
// Node removed (changed to air)
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MEET_REMOVENODE,
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// Node swapped (changed without metadata change)
MEET_SWAPNODE,
// Node metadata changed
MEET_BLOCK_NODE_METADATA_CHANGED,
// Anything else (modified_blocks are set unsent)
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MEET_OTHER
};
struct MapEditEvent
{
MapEditEventType type = MEET_OTHER;
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v3s16 p;
MapNode n = CONTENT_AIR;
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std::set<v3s16> modified_blocks;
bool is_private_change = false;
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MapEditEvent() = default;
VoxelArea getArea() const
{
switch(type){
case MEET_ADDNODE:
return VoxelArea(p);
case MEET_REMOVENODE:
return VoxelArea(p);
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case MEET_SWAPNODE:
return VoxelArea(p);
case MEET_BLOCK_NODE_METADATA_CHANGED:
{
v3s16 np1 = p*MAP_BLOCKSIZE;
v3s16 np2 = np1 + v3s16(1,1,1)*MAP_BLOCKSIZE - v3s16(1,1,1);
return VoxelArea(np1, np2);
}
case MEET_OTHER:
{
VoxelArea a;
for (v3s16 p : modified_blocks) {
v3s16 np1 = p*MAP_BLOCKSIZE;
v3s16 np2 = np1 + v3s16(1,1,1)*MAP_BLOCKSIZE - v3s16(1,1,1);
a.addPoint(np1);
a.addPoint(np2);
}
return a;
}
}
return VoxelArea();
}
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};
class MapEventReceiver
{
public:
// event shall be deleted by caller after the call.
virtual void onMapEditEvent(const MapEditEvent &event) = 0;
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};
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class Map /*: public NodeContainer*/
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{
public:
Map(IGameDef *gamedef);
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virtual ~Map();
DISABLE_CLASS_COPY(Map);
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/*
Drop (client) or delete (server) the map.
*/
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virtual void drop()
{
delete this;
}
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void addEventReceiver(MapEventReceiver *event_receiver);
void removeEventReceiver(MapEventReceiver *event_receiver);
// event shall be deleted by caller after the call.
void dispatchEvent(const MapEditEvent &event);
// On failure returns NULL
MapSector * getSectorNoGenerateNoLock(v2s16 p2d);
// Same as the above (there exists no lock anymore)
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MapSector * getSectorNoGenerate(v2s16 p2d);
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/*
This is overloaded by ClientMap and ServerMap to allow
their differing fetch methods.
*/
virtual MapSector * emergeSector(v2s16 p){ return NULL; }
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// Returns InvalidPositionException if not found
MapBlock * getBlockNoCreate(v3s16 p);
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// Returns NULL if not found
MapBlock * getBlockNoCreateNoEx(v3s16 p);
/* Server overrides */
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virtual MapBlock * emergeBlock(v3s16 p, bool create_blank=true)
{ return getBlockNoCreateNoEx(p); }
inline const NodeDefManager * getNodeDefManager() { return m_nodedef; }
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bool isValidPosition(v3s16 p);
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// throws InvalidPositionException if not found
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void setNode(v3s16 p, MapNode & n);
// Returns a CONTENT_IGNORE node if not found
// If is_valid_position is not NULL then this will be set to true if the
// position is valid, otherwise false
MapNode getNode(v3s16 p, bool *is_valid_position = NULL);
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/*
These handle lighting but not faces.
*/
virtual void addNodeAndUpdate(v3s16 p, MapNode n,
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std::map<v3s16, MapBlock*> &modified_blocks,
bool remove_metadata = true);
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void removeNodeAndUpdate(v3s16 p,
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std::map<v3s16, MapBlock*> &modified_blocks);
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/*
Wrappers for the latter ones.
These emit events.
Return true if succeeded, false if not.
*/
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bool addNodeWithEvent(v3s16 p, MapNode n, bool remove_metadata = true);
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bool removeNodeWithEvent(v3s16 p);
// Call these before and after saving of many blocks
virtual void beginSave() {}
virtual void endSave() {}
virtual void save(ModifiedState save_level) { FATAL_ERROR("FIXME"); }
/*
Return true unless the map definitely cannot save blocks.
*/
virtual bool maySaveBlocks() { return true; }
// Server implements these.
// Client leaves them as no-op.
virtual bool saveBlock(MapBlock *block) { return false; }
virtual bool deleteBlock(v3s16 blockpos) { return false; }
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/*
Updates usage timers and unloads unused blocks and sectors.
Saves modified blocks before unloading if possible.
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*/
void timerUpdate(float dtime, float unload_timeout, u32 max_loaded_blocks,
std::vector<v3s16> *unloaded_blocks=NULL);
/*
Unloads all blocks with a zero refCount().
Saves modified blocks before unloading if possible.
*/
void unloadUnreferencedBlocks(std::vector<v3s16> *unloaded_blocks=NULL);
// Deletes sectors and their blocks from memory
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// Takes cache into account
// If deleted sector is in sector cache, clears cache
void deleteSectors(std::vector<v2s16> &list);
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// For debug printing. Prints "Map: ", "ServerMap: " or "ClientMap: "
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virtual void PrintInfo(std::ostream &out);
/*
Node metadata
These are basically coordinate wrappers to MapBlock
*/
std::vector<v3s16> findNodesWithMetadata(v3s16 p1, v3s16 p2);
NodeMetadata *getNodeMetadata(v3s16 p);
/**
* Sets metadata for a node.
* This method sets the metadata for a given node.
* On success, it returns @c true and the object pointed to
* by @p meta is then managed by the system and should
* not be deleted by the caller.
*
* In case of failure, the method returns @c false and the
* caller is still responsible for deleting the object!
*
* @param p node coordinates
* @param meta pointer to @c NodeMetadata object
* @return @c true on success, false on failure
*/
bool setNodeMetadata(v3s16 p, NodeMetadata *meta);
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void removeNodeMetadata(v3s16 p);
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/*
Node Timers
These are basically coordinate wrappers to MapBlock
*/
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NodeTimer getNodeTimer(v3s16 p);
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void setNodeTimer(const NodeTimer &t);
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void removeNodeTimer(v3s16 p);
/*
Variables
*/
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bool isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes);
protected:
IGameDef *m_gamedef;
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std::set<MapEventReceiver*> m_event_receivers;
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std::map<v2s16, MapSector*> m_sectors;
// Be sure to set this to NULL when the cached sector is deleted
MapSector *m_sector_cache = nullptr;
v2s16 m_sector_cache_p;
// This stores the properties of the nodes on the map.
const NodeDefManager *m_nodedef;
bool determineAdditionalOcclusionCheck(const v3s16 &pos_camera,
const core::aabbox3d<s16> &block_bounds, v3s16 &check);
bool isOccluded(const v3s16 &pos_camera, const v3s16 &pos_target,
float step, float stepfac, float start_offset, float end_offset,
u32 needed_count);
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};
/*
ServerMap
This is the only map class that is able to generate map.
*/
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class ServerMap : public Map
{
public:
/*
savedir: directory to which map data should be saved
*/
ServerMap(const std::string &savedir, IGameDef *gamedef, EmergeManager *emerge, MetricsBackend *mb);
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~ServerMap();
/*
Get a sector from somewhere.
- Check memory
- Check disk (doesn't load blocks)
- Create blank one
*/
MapSector *createSector(v2s16 p);
/*
Blocks are generated by using these and makeBlock().
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*/
bool blockpos_over_mapgen_limit(v3s16 p);
bool initBlockMake(v3s16 blockpos, BlockMakeData *data);
void finishBlockMake(BlockMakeData *data,
std::map<v3s16, MapBlock*> *changed_blocks);
/*
Get a block from somewhere.
- Memory
- Create blank
*/
MapBlock *createBlock(v3s16 p);
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/*
Forcefully get a block from somewhere.
- Memory
- Load from disk
- Create blank filled with CONTENT_IGNORE
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*/
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MapBlock *emergeBlock(v3s16 p, bool create_blank=true) override;
/*
Try to get a block.
If it does not exist in memory, add it to the emerge queue.
- Memory
- Emerge Queue (deferred disk or generate)
*/
MapBlock *getBlockOrEmerge(v3s16 p3d);
bool isBlockInQueue(v3s16 pos);
void addNodeAndUpdate(v3s16 p, MapNode n,
std::map<v3s16, MapBlock*> &modified_blocks,
bool remove_metadata) override;
/*
Database functions
*/
static MapDatabase *createDatabase(const std::string &name, const std::string &savedir, Settings &conf);
// Call these before and after saving of blocks
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void beginSave() override;
void endSave() override;
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void save(ModifiedState save_level) override;
void listAllLoadableBlocks(std::vector<v3s16> &dst);
void listAllLoadedBlocks(std::vector<v3s16> &dst);
MapgenParams *getMapgenParams();
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bool saveBlock(MapBlock *block) override;
static bool saveBlock(MapBlock *block, MapDatabase *db, int compression_level = -1);
MapBlock* loadBlock(v3s16 p);
// Database version
void loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool save_after_load=false);
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bool deleteBlock(v3s16 blockpos) override;
void updateVManip(v3s16 pos);
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// For debug printing
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void PrintInfo(std::ostream &out) override;
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bool isSavingEnabled(){ return m_map_saving_enabled; }
u64 getSeed();
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/*!
* Fixes lighting in one map block.
* May modify other blocks as well, as light can spread
* out of the specified block.
* Returns false if the block is not generated (so nothing
* changed), true otherwise.
*/
bool repairBlockLight(v3s16 blockpos,
std::map<v3s16, MapBlock *> *modified_blocks);
void transformLiquids(std::map<v3s16, MapBlock*> & modified_blocks,
ServerEnvironment *env);
void transforming_liquid_add(v3s16 p);
MapSettingsManager settings_mgr;
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private:
friend class LuaVoxelManip;
// Emerge manager
EmergeManager *m_emerge;
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std::string m_savedir;
bool m_map_saving_enabled;
int m_map_compression_level;
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std::set<v3s16> m_chunks_in_progress;
// Queued transforming water nodes
UniqueQueue<v3s16> m_transforming_liquid;
f32 m_transforming_liquid_loop_count_multiplier = 1.0f;
u32 m_unprocessed_count = 0;
u64 m_inc_trending_up_start_time = 0; // milliseconds
bool m_queue_size_timer_started = false;
/*
Metadata is re-written on disk only if this is true.
This is reset to false when written on disk.
*/
bool m_map_metadata_changed = true;
MapDatabase *dbase = nullptr;
MapDatabase *dbase_ro = nullptr;
MetricCounterPtr m_save_time_counter;
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};
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#define VMANIP_BLOCK_DATA_INEXIST 1
#define VMANIP_BLOCK_CONTAINS_CIGNORE 2
class MMVManip : public VoxelManipulator
{
public:
MMVManip(Map *map);
virtual ~MMVManip() = default;
virtual void clear()
{
VoxelManipulator::clear();
m_loaded_blocks.clear();
}
void initialEmerge(v3s16 blockpos_min, v3s16 blockpos_max,
bool load_if_inexistent = true);
// This is much faster with big chunks of generated data
void blitBackAll(std::map<v3s16, MapBlock*> * modified_blocks,
bool overwrite_generated = true);
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bool m_is_dirty = false;
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protected:
Map *m_map;
/*
key = blockpos
value = flags describing the block
*/
std::map<v3s16, u8> m_loaded_blocks;
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};