forked from Mirrorlandia_minetest/minetest
600 lines
13 KiB
C++
600 lines
13 KiB
C++
/*
|
|
Minetest
|
|
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU 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.
|
|
*/
|
|
|
|
#ifndef VOXEL_HEADER
|
|
#define VOXEL_HEADER
|
|
|
|
#include "irrlichttypes.h"
|
|
#include "irr_v3d.h"
|
|
#include <iostream>
|
|
#include "debug.h"
|
|
#include "exceptions.h"
|
|
#include "mapnode.h"
|
|
#include <set>
|
|
#include <list>
|
|
#include <map>
|
|
|
|
class INodeDefManager;
|
|
|
|
// For VC++
|
|
#undef min
|
|
#undef max
|
|
|
|
/*
|
|
A fast voxel manipulator class.
|
|
|
|
In normal operation, it fetches more map when it is requested.
|
|
It can also be used so that all allowed area is fetched at the
|
|
start, using ManualMapVoxelManipulator.
|
|
|
|
Not thread-safe.
|
|
*/
|
|
|
|
/*
|
|
Debug stuff
|
|
*/
|
|
extern u64 emerge_time;
|
|
extern u64 emerge_load_time;
|
|
|
|
/*
|
|
This class resembles aabbox3d<s16> a lot, but has inclusive
|
|
edges for saner handling of integer sizes
|
|
*/
|
|
class VoxelArea
|
|
{
|
|
public:
|
|
// Starts as zero sized
|
|
VoxelArea():
|
|
MinEdge(1,1,1),
|
|
MaxEdge(0,0,0)
|
|
{
|
|
}
|
|
VoxelArea(v3s16 min_edge, v3s16 max_edge):
|
|
MinEdge(min_edge),
|
|
MaxEdge(max_edge)
|
|
{
|
|
}
|
|
VoxelArea(v3s16 p):
|
|
MinEdge(p),
|
|
MaxEdge(p)
|
|
{
|
|
}
|
|
|
|
/*
|
|
Modifying methods
|
|
*/
|
|
|
|
void addArea(const VoxelArea &a)
|
|
{
|
|
if (hasEmptyExtent())
|
|
{
|
|
*this = a;
|
|
return;
|
|
}
|
|
if(a.MinEdge.X < MinEdge.X) MinEdge.X = a.MinEdge.X;
|
|
if(a.MinEdge.Y < MinEdge.Y) MinEdge.Y = a.MinEdge.Y;
|
|
if(a.MinEdge.Z < MinEdge.Z) MinEdge.Z = a.MinEdge.Z;
|
|
if(a.MaxEdge.X > MaxEdge.X) MaxEdge.X = a.MaxEdge.X;
|
|
if(a.MaxEdge.Y > MaxEdge.Y) MaxEdge.Y = a.MaxEdge.Y;
|
|
if(a.MaxEdge.Z > MaxEdge.Z) MaxEdge.Z = a.MaxEdge.Z;
|
|
}
|
|
void addPoint(const v3s16 &p)
|
|
{
|
|
if(hasEmptyExtent())
|
|
{
|
|
MinEdge = p;
|
|
MaxEdge = p;
|
|
return;
|
|
}
|
|
if(p.X < MinEdge.X) MinEdge.X = p.X;
|
|
if(p.Y < MinEdge.Y) MinEdge.Y = p.Y;
|
|
if(p.Z < MinEdge.Z) MinEdge.Z = p.Z;
|
|
if(p.X > MaxEdge.X) MaxEdge.X = p.X;
|
|
if(p.Y > MaxEdge.Y) MaxEdge.Y = p.Y;
|
|
if(p.Z > MaxEdge.Z) MaxEdge.Z = p.Z;
|
|
}
|
|
|
|
// Pad with d nodes
|
|
void pad(const v3s16 &d)
|
|
{
|
|
MinEdge -= d;
|
|
MaxEdge += d;
|
|
}
|
|
|
|
/*void operator+=(v3s16 off)
|
|
{
|
|
MinEdge += off;
|
|
MaxEdge += off;
|
|
}
|
|
|
|
void operator-=(v3s16 off)
|
|
{
|
|
MinEdge -= off;
|
|
MaxEdge -= off;
|
|
}*/
|
|
|
|
/*
|
|
const methods
|
|
*/
|
|
|
|
v3s16 getExtent() const
|
|
{
|
|
return MaxEdge - MinEdge + v3s16(1,1,1);
|
|
}
|
|
|
|
/* Because MaxEdge and MinEdge are included in the voxel area an empty extent
|
|
* is not represented by (0, 0, 0), but instead (-1, -1, -1)
|
|
*/
|
|
bool hasEmptyExtent() const
|
|
{
|
|
return MaxEdge - MinEdge == v3s16(-1, -1, -1);
|
|
}
|
|
|
|
s32 getVolume() const
|
|
{
|
|
v3s16 e = getExtent();
|
|
return (s32)e.X * (s32)e.Y * (s32)e.Z;
|
|
}
|
|
bool contains(const VoxelArea &a) const
|
|
{
|
|
// No area contains an empty area
|
|
// NOTE: Algorithms depend on this, so do not change.
|
|
if(a.hasEmptyExtent())
|
|
return false;
|
|
|
|
return(
|
|
a.MinEdge.X >= MinEdge.X && a.MaxEdge.X <= MaxEdge.X &&
|
|
a.MinEdge.Y >= MinEdge.Y && a.MaxEdge.Y <= MaxEdge.Y &&
|
|
a.MinEdge.Z >= MinEdge.Z && a.MaxEdge.Z <= MaxEdge.Z
|
|
);
|
|
}
|
|
bool contains(v3s16 p) const
|
|
{
|
|
return(
|
|
p.X >= MinEdge.X && p.X <= MaxEdge.X &&
|
|
p.Y >= MinEdge.Y && p.Y <= MaxEdge.Y &&
|
|
p.Z >= MinEdge.Z && p.Z <= MaxEdge.Z
|
|
);
|
|
}
|
|
bool contains(s32 i) const
|
|
{
|
|
return (i >= 0 && i < getVolume());
|
|
}
|
|
bool operator==(const VoxelArea &other) const
|
|
{
|
|
return (MinEdge == other.MinEdge
|
|
&& MaxEdge == other.MaxEdge);
|
|
}
|
|
|
|
VoxelArea operator+(v3s16 off) const
|
|
{
|
|
return VoxelArea(MinEdge+off, MaxEdge+off);
|
|
}
|
|
|
|
VoxelArea operator-(v3s16 off) const
|
|
{
|
|
return VoxelArea(MinEdge-off, MaxEdge-off);
|
|
}
|
|
|
|
/*
|
|
Returns 0-6 non-overlapping areas that can be added to
|
|
a to make up this area.
|
|
|
|
a: area inside *this
|
|
*/
|
|
void diff(const VoxelArea &a, std::list<VoxelArea> &result)
|
|
{
|
|
/*
|
|
This can result in a maximum of 6 areas
|
|
*/
|
|
|
|
// If a is an empty area, return the current area as a whole
|
|
if(a.getExtent() == v3s16(0,0,0))
|
|
{
|
|
VoxelArea b = *this;
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
return;
|
|
}
|
|
|
|
assert(contains(a)); // pre-condition
|
|
|
|
// Take back area, XY inclusive
|
|
{
|
|
v3s16 min(MinEdge.X, MinEdge.Y, a.MaxEdge.Z+1);
|
|
v3s16 max(MaxEdge.X, MaxEdge.Y, MaxEdge.Z);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
// Take front area, XY inclusive
|
|
{
|
|
v3s16 min(MinEdge.X, MinEdge.Y, MinEdge.Z);
|
|
v3s16 max(MaxEdge.X, MaxEdge.Y, a.MinEdge.Z-1);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
// Take top area, X inclusive
|
|
{
|
|
v3s16 min(MinEdge.X, a.MaxEdge.Y+1, a.MinEdge.Z);
|
|
v3s16 max(MaxEdge.X, MaxEdge.Y, a.MaxEdge.Z);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
// Take bottom area, X inclusive
|
|
{
|
|
v3s16 min(MinEdge.X, MinEdge.Y, a.MinEdge.Z);
|
|
v3s16 max(MaxEdge.X, a.MinEdge.Y-1, a.MaxEdge.Z);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
// Take left area, non-inclusive
|
|
{
|
|
v3s16 min(MinEdge.X, a.MinEdge.Y, a.MinEdge.Z);
|
|
v3s16 max(a.MinEdge.X-1, a.MaxEdge.Y, a.MaxEdge.Z);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
// Take right area, non-inclusive
|
|
{
|
|
v3s16 min(a.MaxEdge.X+1, a.MinEdge.Y, a.MinEdge.Z);
|
|
v3s16 max(MaxEdge.X, a.MaxEdge.Y, a.MaxEdge.Z);
|
|
VoxelArea b(min, max);
|
|
if(b.getVolume() != 0)
|
|
result.push_back(b);
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
Translates position from virtual coordinates to array index
|
|
*/
|
|
s32 index(s16 x, s16 y, s16 z) const
|
|
{
|
|
v3s16 em = getExtent();
|
|
v3s16 off = MinEdge;
|
|
s32 i = (s32)(z-off.Z)*em.Y*em.X + (y-off.Y)*em.X + (x-off.X);
|
|
//dstream<<" i("<<x<<","<<y<<","<<z<<")="<<i<<" ";
|
|
return i;
|
|
}
|
|
s32 index(v3s16 p) const
|
|
{
|
|
return index(p.X, p.Y, p.Z);
|
|
}
|
|
|
|
// Translate index in the X coordinate
|
|
void add_x(const v3s16 &extent, u32 &i, s16 a)
|
|
{
|
|
i += a;
|
|
}
|
|
// Translate index in the Y coordinate
|
|
void add_y(const v3s16 &extent, u32 &i, s16 a)
|
|
{
|
|
i += a * extent.X;
|
|
}
|
|
// Translate index in the Z coordinate
|
|
void add_z(const v3s16 &extent, u32 &i, s16 a)
|
|
{
|
|
i += a * extent.X*extent.Y;
|
|
}
|
|
// Translate index in space
|
|
void add_p(const v3s16 &extent, u32 &i, v3s16 a)
|
|
{
|
|
i += a.Z*extent.X*extent.Y + a.Y*extent.X + a.X;
|
|
}
|
|
|
|
/*
|
|
Print method for debugging
|
|
*/
|
|
void print(std::ostream &o) const
|
|
{
|
|
v3s16 e = getExtent();
|
|
o<<"("<<MinEdge.X
|
|
<<","<<MinEdge.Y
|
|
<<","<<MinEdge.Z
|
|
<<")("<<MaxEdge.X
|
|
<<","<<MaxEdge.Y
|
|
<<","<<MaxEdge.Z
|
|
<<")"
|
|
<<"="<<e.X<<"x"<<e.Y<<"x"<<e.Z<<"="<<getVolume();
|
|
}
|
|
|
|
// Edges are inclusive
|
|
v3s16 MinEdge;
|
|
v3s16 MaxEdge;
|
|
};
|
|
|
|
// unused
|
|
#define VOXELFLAG_UNUSED (1<<0)
|
|
// no data about that node
|
|
#define VOXELFLAG_NO_DATA (1<<1)
|
|
// Algorithm-dependent
|
|
#define VOXELFLAG_CHECKED1 (1<<2)
|
|
// Algorithm-dependent
|
|
#define VOXELFLAG_CHECKED2 (1<<3)
|
|
// Algorithm-dependent
|
|
#define VOXELFLAG_CHECKED3 (1<<4)
|
|
// Algorithm-dependent
|
|
#define VOXELFLAG_CHECKED4 (1<<5)
|
|
|
|
enum VoxelPrintMode
|
|
{
|
|
VOXELPRINT_NOTHING,
|
|
VOXELPRINT_MATERIAL,
|
|
VOXELPRINT_WATERPRESSURE,
|
|
VOXELPRINT_LIGHT_DAY,
|
|
};
|
|
|
|
class VoxelManipulator /*: public NodeContainer*/
|
|
{
|
|
public:
|
|
VoxelManipulator();
|
|
virtual ~VoxelManipulator();
|
|
|
|
/*
|
|
Virtuals from NodeContainer
|
|
*/
|
|
/*virtual u16 nodeContainerId() const
|
|
{
|
|
return NODECONTAINER_ID_VOXELMANIPULATOR;
|
|
}
|
|
bool isValidPosition(v3s16 p)
|
|
{
|
|
addArea(p);
|
|
return !(m_flags[m_area.index(p)] & VOXELFLAG_NO_DATA);
|
|
}*/
|
|
|
|
/*
|
|
These are a bit slow and shouldn't be used internally.
|
|
Use m_data[m_area.index(p)] instead.
|
|
*/
|
|
MapNode getNode(v3s16 p)
|
|
{
|
|
VoxelArea voxel_area(p);
|
|
addArea(voxel_area);
|
|
|
|
if(m_flags[m_area.index(p)] & VOXELFLAG_NO_DATA)
|
|
{
|
|
/*dstream<<"EXCEPT: VoxelManipulator::getNode(): "
|
|
<<"p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"
|
|
<<", index="<<m_area.index(p)
|
|
<<", flags="<<(int)m_flags[m_area.index(p)]
|
|
<<" is inexistent"<<std::endl;*/
|
|
throw InvalidPositionException
|
|
("VoxelManipulator: getNode: inexistent");
|
|
}
|
|
|
|
return m_data[m_area.index(p)];
|
|
}
|
|
MapNode getNodeNoEx(v3s16 p)
|
|
{
|
|
VoxelArea voxel_area(p);
|
|
addArea(voxel_area);
|
|
|
|
if(m_flags[m_area.index(p)] & VOXELFLAG_NO_DATA)
|
|
{
|
|
return MapNode(CONTENT_IGNORE);
|
|
}
|
|
|
|
return m_data[m_area.index(p)];
|
|
}
|
|
MapNode getNodeNoExNoEmerge(v3s16 p)
|
|
{
|
|
if(m_area.contains(p) == false)
|
|
return MapNode(CONTENT_IGNORE);
|
|
if(m_flags[m_area.index(p)] & VOXELFLAG_NO_DATA)
|
|
return MapNode(CONTENT_IGNORE);
|
|
return m_data[m_area.index(p)];
|
|
}
|
|
// Stuff explodes if non-emerged area is touched with this.
|
|
// Emerge first, and check VOXELFLAG_NO_DATA if appropriate.
|
|
MapNode & getNodeRefUnsafe(const v3s16 &p)
|
|
{
|
|
return m_data[m_area.index(p)];
|
|
}
|
|
|
|
const MapNode & getNodeRefUnsafeCheckFlags(const v3s16 &p)
|
|
{
|
|
s32 index = m_area.index(p);
|
|
|
|
if (m_flags[index] & VOXELFLAG_NO_DATA)
|
|
return ContentIgnoreNode;
|
|
|
|
return m_data[index];
|
|
}
|
|
|
|
u8 & getFlagsRefUnsafe(v3s16 p)
|
|
{
|
|
return m_flags[m_area.index(p)];
|
|
}
|
|
bool exists(v3s16 p)
|
|
{
|
|
return m_area.contains(p) &&
|
|
!(getFlagsRefUnsafe(p) & VOXELFLAG_NO_DATA);
|
|
}
|
|
MapNode & getNodeRef(v3s16 p)
|
|
{
|
|
VoxelArea voxel_area(p);
|
|
addArea(voxel_area);
|
|
if(getFlagsRefUnsafe(p) & VOXELFLAG_NO_DATA)
|
|
{
|
|
/*dstream<<"EXCEPT: VoxelManipulator::getNode(): "
|
|
<<"p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"
|
|
<<", index="<<m_area.index(p)
|
|
<<", flags="<<(int)getFlagsRefUnsafe(p)
|
|
<<" is inexistent"<<std::endl;*/
|
|
throw InvalidPositionException
|
|
("VoxelManipulator: getNode: inexistent");
|
|
}
|
|
return getNodeRefUnsafe(p);
|
|
}
|
|
void setNode(v3s16 p, const MapNode &n)
|
|
{
|
|
VoxelArea voxel_area(p);
|
|
addArea(voxel_area);
|
|
|
|
m_data[m_area.index(p)] = n;
|
|
m_flags[m_area.index(p)] &= ~VOXELFLAG_NO_DATA;
|
|
}
|
|
// TODO: Should be removed and replaced with setNode
|
|
void setNodeNoRef(v3s16 p, const MapNode &n)
|
|
{
|
|
setNode(p, n);
|
|
}
|
|
|
|
/*void setExists(VoxelArea a)
|
|
{
|
|
addArea(a);
|
|
for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
|
|
for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
|
|
for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
|
|
{
|
|
m_flags[m_area.index(x,y,z)] &= ~VOXELFLAG_NO_DATA;
|
|
}
|
|
}*/
|
|
|
|
/*MapNode & operator[](v3s16 p)
|
|
{
|
|
//dstream<<"operator[] p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;
|
|
if(isValidPosition(p) == false)
|
|
addArea(VoxelArea(p));
|
|
|
|
return m_data[m_area.index(p)];
|
|
}*/
|
|
|
|
/*
|
|
Set stuff if available without an emerge.
|
|
Return false if failed.
|
|
This is convenient but slower than playing around directly
|
|
with the m_data table with indices.
|
|
*/
|
|
bool setNodeNoEmerge(v3s16 p, MapNode n)
|
|
{
|
|
if(m_area.contains(p) == false)
|
|
return false;
|
|
m_data[m_area.index(p)] = n;
|
|
return true;
|
|
}
|
|
bool setNodeNoEmerge(s32 i, MapNode n)
|
|
{
|
|
if(m_area.contains(i) == false)
|
|
return false;
|
|
m_data[i] = n;
|
|
return true;
|
|
}
|
|
/*bool setContentNoEmerge(v3s16 p, u8 c)
|
|
{
|
|
if(isValidPosition(p) == false)
|
|
return false;
|
|
m_data[m_area.index(p)].d = c;
|
|
}*/
|
|
|
|
/*
|
|
Control
|
|
*/
|
|
|
|
virtual void clear();
|
|
|
|
void print(std::ostream &o, INodeDefManager *nodemgr,
|
|
VoxelPrintMode mode=VOXELPRINT_MATERIAL);
|
|
|
|
void addArea(const VoxelArea &area);
|
|
|
|
/*
|
|
Copy data and set flags to 0
|
|
dst_area.getExtent() <= src_area.getExtent()
|
|
*/
|
|
void copyFrom(MapNode *src, const VoxelArea& src_area,
|
|
v3s16 from_pos, v3s16 to_pos, v3s16 size);
|
|
|
|
// Copy data
|
|
void copyTo(MapNode *dst, const VoxelArea& dst_area,
|
|
v3s16 dst_pos, v3s16 from_pos, v3s16 size);
|
|
|
|
/*
|
|
Algorithms
|
|
*/
|
|
|
|
void clearFlag(u8 flag);
|
|
|
|
// TODO: Move to voxelalgorithms.h
|
|
|
|
void unspreadLight(enum LightBank bank, v3s16 p, u8 oldlight,
|
|
std::set<v3s16> & light_sources, INodeDefManager *nodemgr);
|
|
void unspreadLight(enum LightBank bank,
|
|
std::map<v3s16, u8> & from_nodes,
|
|
std::set<v3s16> & light_sources, INodeDefManager *nodemgr);
|
|
|
|
void spreadLight(enum LightBank bank, v3s16 p, INodeDefManager *nodemgr);
|
|
void spreadLight(enum LightBank bank,
|
|
std::set<v3s16> & from_nodes, INodeDefManager *nodemgr);
|
|
|
|
/*
|
|
Virtual functions
|
|
*/
|
|
|
|
/*
|
|
Member variables
|
|
*/
|
|
|
|
/*
|
|
The area that is stored in m_data.
|
|
addInternalBox should not be used if getExtent() == v3s16(0,0,0)
|
|
MaxEdge is 1 higher than maximum allowed position
|
|
*/
|
|
VoxelArea m_area;
|
|
|
|
/*
|
|
NULL if data size is 0 (extent (0,0,0))
|
|
Data is stored as [z*h*w + y*h + x]
|
|
*/
|
|
MapNode *m_data;
|
|
|
|
/*
|
|
Flags of all nodes
|
|
*/
|
|
u8 *m_flags;
|
|
|
|
static const MapNode ContentIgnoreNode;
|
|
|
|
//TODO: Use these or remove them
|
|
//TODO: Would these make any speed improvement?
|
|
//bool m_pressure_route_valid;
|
|
//v3s16 m_pressure_route_surface;
|
|
|
|
/*
|
|
Some settings
|
|
*/
|
|
//bool m_disable_water_climb;
|
|
|
|
private:
|
|
};
|
|
|
|
#endif
|
|
|