vokselijuttu lisätty

master
Perttu Ahola 2010-11-29 10:57:05 +02:00
parent c707e00195
commit af95cfc7a1
3 changed files with 532 additions and 0 deletions

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RelativePath=".\src\utility.cpp"
>
</File>
<File
RelativePath=".\src\voxel.cpp"
>
</File>
</Filter>
<Filter
Name="Header Files"

304
src/voxel.cpp Normal file
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#include "voxel.h"
#include "map.h"
VoxelManipulator::VoxelManipulator():
m_data(NULL)
{
}
VoxelManipulator::~VoxelManipulator()
{
if(m_data)
delete[] m_data;
}
void VoxelManipulator::addArea(VoxelArea area)
{
if(area.getExtent() == v3s16(0,0,0))
return;
// Calculate new area
VoxelArea new_area;
if(m_area.getExtent() == v3s16(0,0,0))
{
new_area = area;
}
else
{
new_area = m_area;
new_area.addArea(area);
}
if(new_area == m_area)
return;
s32 new_size = new_area.getVolume();
/*dstream<<"adding area ";
area.print(dstream);
dstream<<", old area ";
m_area.print(dstream);
dstream<<", new area ";
new_area.print(dstream);
dstream<<", new_size="<<new_size;
dstream<<std::endl;*/
// Allocate and clear new data
MapNode *new_data;
new_data = new MapNode[new_size];
for(s32 i=0; i<new_size; i++)
{
new_data[i].d = MATERIAL_IGNORE;
}
// Copy old data
for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
{
new_data[new_area.index(z,y,x)] = m_data[m_area.index(x,y,z)];
}
// Replace member
m_area = new_area;
MapNode *old_data = m_data;
m_data = new_data;
delete[] old_data;
}
void VoxelManipulator::print(std::ostream &o)
{
v3s16 em = m_area.getExtent();
v3s16 of = m_area.MinEdge;
o<<"size: "<<em.X<<"x"<<em.Y<<"x"<<em.Z
<<" offset: ("<<of.X<<","<<of.Y<<","<<of.Z<<")"<<std::endl;
for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
{
if(em.X >= 3 && em.Y >= 3)
{
if(y==m_area.MinEdge.Y+0) o<<"y x-> ";
if(y==m_area.MinEdge.Y+1) o<<"| ";
if(y==m_area.MinEdge.Y+2) o<<"V ";
}
for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
{
for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
{
u8 m = m_data[m_area.index(x,y,z)].d;
char c = 'X';
if(m == MATERIAL_IGNORE)
c = 'I';
else if(m <= 9)
c = m + '0';
o<<c;
}
o<<' ';
}
o<<std::endl;
}
}
void VoxelManipulator::interpolate(VoxelArea area)
{
VoxelArea emerge_area = area;
emerge_area.MinEdge -= v3s16(1,1,1);
emerge_area.MaxEdge += v3s16(1,1,1);
emerge(emerge_area);
SharedBuffer<u8> buf(area.getVolume());
for(s32 z=area.MinEdge.Z; z<=area.MaxEdge.Z; z++)
for(s32 y=area.MinEdge.Y; y<=area.MaxEdge.Y; y++)
for(s32 x=area.MinEdge.X; x<=area.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
v3s16 dirs[] = {
v3s16(1,1,0),
v3s16(1,0,1),
v3s16(1,-1,0),
v3s16(1,0,-1),
v3s16(-1,1,0),
v3s16(-1,0,1),
v3s16(-1,-1,0),
v3s16(-1,0,-1),
};
//const v3s16 *dirs = g_26dirs;
s16 total = 0;
s16 airness = 0;
u8 m = MATERIAL_IGNORE;
for(s16 i=0; i<8; i++)
//for(s16 i=0; i<26; i++)
{
v3s16 p2 = p + dirs[i];
MapNode &n = m_data[m_area.index(p2)];
if(n.d == MATERIAL_IGNORE)
continue;
airness += (n.d == MATERIAL_AIR) ? 1 : -1;
total++;
if(m == MATERIAL_IGNORE && n.d != MATERIAL_AIR)
m = n.d;
}
// 1 if air, 0 if not
buf[area.index(p)] = airness > -total/2 ? MATERIAL_AIR : m;
//buf[area.index(p)] = airness > -total ? MATERIAL_AIR : m;
//buf[area.index(p)] = airness >= -7 ? MATERIAL_AIR : m;
}
for(s32 z=area.MinEdge.Z; z<=area.MaxEdge.Z; z++)
for(s32 y=area.MinEdge.Y; y<=area.MaxEdge.Y; y++)
for(s32 x=area.MinEdge.X; x<=area.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
m_data[m_area.index(p)].d = buf[area.index(p)];
}
}
#if 0
void VoxelManipulator::blitFromNodeContainer
(v3s16 p_from, v3s16 p_to, v3s16 size, NodeContainer *c)
{
VoxelArea a_to(p_to, p_to+size-v3s16(1,1,1));
addArea(a_to);
for(s16 z=0; z<size.Z; z++)
for(s16 y=0; y<size.Y; y++)
for(s16 x=0; x<size.X; x++)
{
v3s16 p(x,y,z);
try{
MapNode n = c->getNode(p_from + p);
m_data[m_area.index(p_to + p)] = n;
}
catch(InvalidPositionException &e)
{
}
/*v3s16 p(x,y,z);
MapNode n(MATERIAL_IGNORE);
try{
n = c->getNode(p_from + p);
}
catch(InvalidPositionException &e)
{
}
m_data[m_area.index(p_to + p)] = n;*/
}
}
void VoxelManipulator::blitToNodeContainer
(v3s16 p_from, v3s16 p_to, v3s16 size, NodeContainer *c)
{
for(s16 z=0; z<size.Z; z++)
for(s16 y=0; y<size.Y; y++)
for(s16 x=0; x<size.X; x++)
{
v3s16 p(x,y,z);
try{
MapNode &n = m_data[m_area.index(p_from + p)];
if(n.d == MATERIAL_IGNORE)
continue;
c->setNode(p_to + p, n);
}
catch(InvalidPositionException &e)
{
}
}
}
#endif
/*
MapVoxelManipulator
*/
MapVoxelManipulator::MapVoxelManipulator(Map *map)
{
m_map = map;
}
void MapVoxelManipulator::emerge(VoxelArea a)
{
v3s16 size = a.getExtent();
addArea(a);
for(s16 z=0; z<size.Z; z++)
for(s16 y=0; y<size.Y; y++)
for(s16 x=0; x<size.X; x++)
{
v3s16 p(x,y,z);
try{
MapNode n = m_map->getNode(a.MinEdge + p);
m_data[m_area.index(a.MinEdge + p)] = n;
}
catch(InvalidPositionException &e)
{
}
}
}
void MapVoxelManipulator::blitBack
(core::map<v3s16, MapBlock*> & modified_blocks)
{
/*
Initialize block cache
*/
v3s16 blockpos_last;
MapBlock *block = NULL;
bool block_checked_in_modified = false;
for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
MapNode &n = m_data[m_area.index(p)];
if(n.d == MATERIAL_IGNORE)
continue;
v3s16 blockpos = getNodeBlockPos(p);
try
{
// Get block
if(block == NULL || blockpos != blockpos_last){
block = m_map->getBlockNoCreate(blockpos);
blockpos_last = blockpos;
block_checked_in_modified = false;
}
// Calculate relative position in block
v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
// Don't continue if nothing has changed here
if(block->getNode(relpos) == n)
continue;
//m_map->setNode(m_area.MinEdge + p, n);
block->setNode(relpos, n);
/*
Make sure block is in modified_blocks
*/
if(block_checked_in_modified == false)
{
modified_blocks[blockpos] = block;
block_checked_in_modified = true;
}
}
catch(InvalidPositionException &e)
{
}
}
}
//END

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#ifndef VOXEL_HEADER
#define VOXEL_HEADER
#include "common_irrlicht.h"
#include "mapblock.h"
#include <iostream>
/*
TODO: A fast voxel manipulator class
Not thread-safe.
*/
/*
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)
{
}
void addArea(VoxelArea &a)
{
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(v3s16 p)
{
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;
}
v3s16 getExtent()
{
return MaxEdge - MinEdge + v3s16(1,1,1);
}
s32 getVolume()
{
v3s16 e = getExtent();
return (s32)e.X * (s32)e.Y * (s32)e.Z;
}
bool isInside(v3s16 p)
{
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 operator==(const VoxelArea &other)
{
return (MinEdge == other.MinEdge
&& MaxEdge == other.MaxEdge);
}
/*
Translates position from virtual coordinates to array index
*/
s32 index(s16 x, s16 y, s16 z)
{
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)
{
return index(p.X, p.Y, p.Z);
}
void print(std::ostream &o)
{
o<<"("<<MinEdge.X
<<","<<MinEdge.Y
<<","<<MinEdge.Z
<<")("<<MaxEdge.X
<<","<<MaxEdge.Y
<<","<<MaxEdge.Z
<<")";
}
// Edges are inclusive
v3s16 MinEdge;
v3s16 MaxEdge;
};
class VoxelManipulator : public NodeContainer
{
public:
VoxelManipulator();
~VoxelManipulator();
/*
Virtuals from NodeContainer
*/
virtual u16 nodeContainerId() const
{
return NODECONTAINER_ID_VOXELMANIPULATOR;
}
bool isValidPosition(v3s16 p)
{
return m_area.isInside(p);
}
// These are a bit slow and shouldn't be used internally
MapNode getNode(v3s16 p)
{
if(isValidPosition(p) == false)
emerge(VoxelArea(p));
MapNode &n = m_data[m_area.index(p)];
//TODO: Is this the right behaviour?
if(n.d == MATERIAL_IGNORE)
throw InvalidPositionException
("Not returning MATERIAL_IGNORE in VoxelManipulator");
return n;
}
void setNode(v3s16 p, MapNode & n)
{
if(isValidPosition(p) == false)
emerge(VoxelArea(p));
m_data[m_area.index(p)] = n;
}
MapNode & operator[](v3s16 p)
{
//dstream<<"operator[] p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;
if(isValidPosition(p) == false)
emerge(VoxelArea(p));
return m_data[m_area.index(p)];
}
/*
Manipulation of bigger chunks
*/
void print(std::ostream &o);
void addArea(VoxelArea area);
void interpolate(VoxelArea area);
/*void blitFromNodeContainer
(v3s16 p_from, v3s16 p_to, v3s16 size, NodeContainer *c);
void blitToNodeContainer
(v3s16 p_from, v3s16 p_to, v3s16 size, NodeContainer *c);*/
/*
Virtual functions
*/
/*
Get the contents of the requested area from somewhere.
If not found from source, add as MATERIAL_IGNORE.
*/
virtual void emerge(VoxelArea a)
{
//dstream<<"emerge p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;
addArea(a);
}
/*
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
Data is stored as [z*h*w + y*h + x]
Special data values:
MATERIAL_IGNORE: Unspecified node
*/
MapNode *m_data;
private:
};
class Map;
class MapVoxelManipulator : public VoxelManipulator
{
public:
MapVoxelManipulator(Map *map);
virtual void emerge(VoxelArea a);
void blitBack(core::map<v3s16, MapBlock*> & modified_blocks);
private:
Map *m_map;
};
#endif