minetest/src/mapblock.h

595 lines
12 KiB
C++

/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU 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.
*/
#ifndef MAPBLOCK_HEADER
#define MAPBLOCK_HEADER
#include <jmutex.h>
#include <jmutexautolock.h>
#include <exception>
#include "debug.h"
#include "common_irrlicht.h"
#include "mapnode.h"
#include "exceptions.h"
#include "serialization.h"
#include "constants.h"
#include "mapblockobject.h"
#include "voxel.h"
// Named by looking towards z+
enum{
FACE_BACK=0,
FACE_TOP,
FACE_RIGHT,
FACE_FRONT,
FACE_BOTTOM,
FACE_LEFT
};
struct FastFace
{
TileSpec tile;
video::S3DVertex vertices[4]; // Precalculated vertices
};
enum NodeModType
{
NODEMOD_NONE,
NODEMOD_CHANGECONTENT, //param is content id
NODEMOD_CRACK // param is crack progression
};
struct NodeMod
{
NodeMod(enum NodeModType a_type=NODEMOD_NONE, u16 a_param=0)
{
type = a_type;
param = a_param;
}
bool operator==(const NodeMod &other)
{
return (type == other.type && param == other.param);
}
enum NodeModType type;
u16 param;
};
enum
{
NODECONTAINER_ID_MAPBLOCK,
NODECONTAINER_ID_MAPSECTOR,
NODECONTAINER_ID_MAP,
NODECONTAINER_ID_MAPBLOCKCACHE,
NODECONTAINER_ID_VOXELMANIPULATOR,
};
class NodeContainer
{
public:
virtual bool isValidPosition(v3s16 p) = 0;
virtual MapNode getNode(v3s16 p) = 0;
virtual void setNode(v3s16 p, MapNode & n) = 0;
virtual u16 nodeContainerId() const = 0;
};
class MapBlock : public NodeContainer
{
public:
MapBlock(NodeContainer *parent, v3s16 pos, bool dummy=false);
~MapBlock();
virtual u16 nodeContainerId() const
{
return NODECONTAINER_ID_MAPBLOCK;
}
NodeContainer * getParent()
{
return m_parent;
}
bool isDummy()
{
return (data == NULL);
}
void unDummify()
{
assert(isDummy());
reallocate();
}
bool getChangedFlag()
{
return changed;
}
void resetChangedFlag()
{
changed = false;
}
void setChangedFlag()
{
changed = true;
}
#ifndef SERVER
void setMeshExpired(bool expired)
{
m_mesh_expired = expired;
}
bool getMeshExpired()
{
return m_mesh_expired;
}
#endif
v3s16 getPos()
{
return m_pos;
}
v3s16 getPosRelative()
{
return m_pos * MAP_BLOCKSIZE;
}
bool getIsUnderground()
{
return is_underground;
}
void setIsUnderground(bool a_is_underground)
{
is_underground = a_is_underground;
setChangedFlag();
}
core::aabbox3d<s16> getBox()
{
return core::aabbox3d<s16>(getPosRelative(),
getPosRelative()
+ v3s16(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE)
- v3s16(1,1,1));
}
void reallocate()
{
if(data != NULL)
delete[] data;
u32 l = MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
data = new MapNode[l];
for(u32 i=0; i<l; i++){
data[i] = MapNode();
}
setChangedFlag();
}
bool isValidPosition(v3s16 p)
{
if(data == NULL)
return false;
return (p.X >= 0 && p.X < MAP_BLOCKSIZE
&& p.Y >= 0 && p.Y < MAP_BLOCKSIZE
&& p.Z >= 0 && p.Z < MAP_BLOCKSIZE);
}
/*
Regular MapNode get-setters
*/
MapNode getNode(s16 x, s16 y, s16 z)
{
if(data == NULL)
throw InvalidPositionException();
if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
}
MapNode getNode(v3s16 p)
{
return getNode(p.X, p.Y, p.Z);
}
void setNode(s16 x, s16 y, s16 z, MapNode & n)
{
if(data == NULL)
throw InvalidPositionException();
if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
setChangedFlag();
}
void setNode(v3s16 p, MapNode & n)
{
setNode(p.X, p.Y, p.Z, n);
}
/*
Non-checking variants of the above
*/
MapNode getNodeNoCheck(s16 x, s16 y, s16 z)
{
if(data == NULL)
throw InvalidPositionException();
return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
}
MapNode getNodeNoCheck(v3s16 p)
{
return getNodeNoCheck(p.X, p.Y, p.Z);
}
void setNodeNoCheck(s16 x, s16 y, s16 z, MapNode & n)
{
if(data == NULL)
throw InvalidPositionException();
data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x] = n;
setChangedFlag();
}
void setNodeNoCheck(v3s16 p, MapNode & n)
{
setNodeNoCheck(p.X, p.Y, p.Z, n);
}
/*
These functions consult the parent container if the position
is not valid on this MapBlock.
*/
bool isValidPositionParent(v3s16 p);
MapNode getNodeParent(v3s16 p);
void setNodeParent(v3s16 p, MapNode & n);
MapNode getNodeParentNoEx(v3s16 p);
void drawbox(s16 x0, s16 y0, s16 z0, s16 w, s16 h, s16 d, MapNode node)
{
for(u16 z=0; z<d; z++)
for(u16 y=0; y<h; y++)
for(u16 x=0; x<w; x++)
setNode(x0+x, y0+y, z0+z, node);
}
u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
v3s16 face_dir);
u8 getFaceLight(u32 daynight_ratio, v3s16 p, v3s16 face_dir)
{
return getFaceLight(daynight_ratio,
getNodeParentNoEx(p),
getNodeParentNoEx(p + face_dir),
face_dir);
}
#ifndef SERVER
// light = 0...255
static void makeFastFace(TileSpec tile, u8 light, v3f p,
v3s16 dir, v3f scale, v3f posRelative_f,
core::array<FastFace> &dest);
TileSpec getNodeTile(MapNode mn, v3s16 p, v3s16 face_dir);
u8 getNodeContent(v3s16 p, MapNode mn);
/*
startpos:
translate_dir: unit vector with only one of x, y or z
face_dir: unit vector with only one of x, y or z
*/
void updateFastFaceRow(
u32 daynight_ratio,
v3f posRelative_f,
v3s16 startpos,
u16 length,
v3s16 translate_dir,
v3f translate_dir_f,
v3s16 face_dir,
v3f face_dir_f,
core::array<FastFace> &dest);
void updateMesh(u32 daynight_ratio);
/*void updateMesh(s32 daynight_i);
// Updates all DAYNIGHT_CACHE_COUNT meshes
void updateMeshes(s32 first_i=0);*/
#endif // !SERVER
// See comments in mapblock.cpp
bool propagateSunlight(core::map<v3s16, bool> & light_sources,
bool remove_light=false, bool *black_air_left=NULL,
bool grow_grass=false);
// Copies data to VoxelManipulator to getPosRelative()
void copyTo(VoxelManipulator &dst);
/*
Object stuff
*/
void serializeObjects(std::ostream &os, u8 version)
{
m_objects.serialize(os, version);
}
// If smgr!=NULL, new objects are added to the scene
void updateObjects(std::istream &is, u8 version,
scene::ISceneManager *smgr, u32 daynight_ratio)
{
m_objects.update(is, version, smgr, daynight_ratio);
setChangedFlag();
}
void clearObjects()
{
m_objects.clear();
setChangedFlag();
}
void addObject(MapBlockObject *object)
throw(ContainerFullException, AlreadyExistsException)
{
m_objects.add(object);
setChangedFlag();
}
void removeObject(s16 id)
{
m_objects.remove(id);
setChangedFlag();
}
MapBlockObject * getObject(s16 id)
{
return m_objects.get(id);
}
JMutexAutoLock * getObjectLock()
{
return m_objects.getLock();
}
/*
Moves objects, deletes objects and spawns new objects
*/
void stepObjects(float dtime, bool server, u32 daynight_ratio);
/*void wrapObject(MapBlockObject *object)
{
m_objects.wrapObject(object);
setChangedFlag();
}*/
// origin is relative to block
void getObjects(v3f origin, f32 max_d,
core::array<DistanceSortedObject> &dest)
{
m_objects.getObjects(origin, max_d, dest);
}
/*void getPseudoObjects(v3f origin, f32 max_d,
core::array<DistanceSortedObject> &dest);*/
s32 getObjectCount()
{
return m_objects.getCount();
}
#ifndef SERVER
/*
Methods for setting temporary modifications to nodes for
drawing
returns true if the mod was different last time
*/
bool setTempMod(v3s16 p, NodeMod mod)
{
/*dstream<<"setTempMod called on block"
<<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
<<", mod.type="<<mod.type
<<", mod.param="<<mod.param
<<std::endl;*/
JMutexAutoLock lock(m_temp_mods_mutex);
// See if old is different, cancel if it is not different.
core::map<v3s16, NodeMod>::Node *n = m_temp_mods.find(p);
if(n)
{
NodeMod old = n->getValue();
if(old == mod)
return false;
}
m_temp_mods[p] = mod;
return true;
}
// Returns true if there was one
bool getTempMod(v3s16 p, struct NodeMod *mod)
{
JMutexAutoLock lock(m_temp_mods_mutex);
core::map<v3s16, NodeMod>::Node *n;
n = m_temp_mods.find(p);
if(n == NULL)
return false;
if(mod)
*mod = n->getValue();
return true;
}
bool clearTempMod(v3s16 p)
{
JMutexAutoLock lock(m_temp_mods_mutex);
if(m_temp_mods.find(p))
{
m_temp_mods.remove(p);
return true;
}
return false;
}
bool clearTempMods()
{
JMutexAutoLock lock(m_temp_mods_mutex);
if(m_temp_mods.size() == 0)
return false;
m_temp_mods.clear();
return true;
}
#endif
/*
Day-night lighting difference
These methods don't care about neighboring blocks.
It means that to know if a block really doesn't need a mesh
update between day and night, the neighboring blocks have
to be taken into account. Use Map::dayNightDiffed().
*/
void updateDayNightDiff();
bool dayNightDiffed()
{
return m_day_night_differs;
}
/*
Miscellaneous stuff
*/
/*
Tries to measure ground level.
Return value:
-1 = only air
-2 = only ground
-3 = random fail
0...MAP_BLOCKSIZE-1 = ground level
*/
s16 getGroundLevel(v2s16 p2d);
/*
Serialization
*/
// Doesn't write version by itself
void serialize(std::ostream &os, u8 version);
void deSerialize(std::istream &is, u8 version);
/*
Public member variables
*/
#ifndef SERVER
//scene::SMesh *mesh[DAYNIGHT_CACHE_COUNT];
scene::SMesh *mesh;
JMutex mesh_mutex;
#endif
private:
/*
Used only internally, because changes can't be tracked
*/
MapNode & getNodeRef(s16 x, s16 y, s16 z)
{
if(data == NULL)
throw InvalidPositionException();
if(x < 0 || x >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(y < 0 || y >= MAP_BLOCKSIZE) throw InvalidPositionException();
if(z < 0 || z >= MAP_BLOCKSIZE) throw InvalidPositionException();
return data[z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + y*MAP_BLOCKSIZE + x];
}
MapNode & getNodeRef(v3s16 &p)
{
return getNodeRef(p.X, p.Y, p.Z);
}
NodeContainer *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 client, this is used for checking whether to
recalculate the face cache. (Is it anymore?)
- On the server, this is used for telling whether the
block has been changed from the one on disk.
*/
bool changed;
/*
Used for some initial lighting stuff.
At least /has been/ used. 8)
It's probably useless now.
*/
bool is_underground;
// Whether day and night lighting differs
bool m_day_night_differs;
MapBlockObjectList m_objects;
// Object spawning stuff
float m_spawn_timer;
#ifndef SERVER
bool m_mesh_expired;
// Temporary modifications to nodes
// These are only used when drawing
core::map<v3s16, NodeMod> m_temp_mods;
JMutex m_temp_mods_mutex;
#endif
};
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);
}
#endif