mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-11-10 17:29:10 +00:00
538 lines
13 KiB
C++
538 lines
13 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as
|
|
// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include "stdpacs.h"
|
|
|
|
#include "chain_quad.h"
|
|
|
|
using namespace std;
|
|
using namespace NLMISC;
|
|
|
|
|
|
namespace NLPACS
|
|
{
|
|
|
|
|
|
// ***************************************************************************
|
|
const float CChainQuad::_QuadElementSize= 4; // = 4 meters.
|
|
|
|
|
|
// ***************************************************************************
|
|
CChainQuad::CChainQuad()
|
|
{
|
|
_QuadData= NULL;
|
|
_QuadDataLen= 0;
|
|
}
|
|
// ***************************************************************************
|
|
CChainQuad::~CChainQuad()
|
|
{
|
|
delete [] _QuadData;
|
|
_QuadData= NULL;
|
|
_QuadDataLen= 0;
|
|
}
|
|
// ***************************************************************************
|
|
CChainQuad::CChainQuad(const CChainQuad &o)
|
|
{
|
|
_QuadData= NULL;
|
|
_QuadDataLen= 0;
|
|
*this= o;
|
|
}
|
|
// ***************************************************************************
|
|
CChainQuad &CChainQuad::operator=(const CChainQuad &o)
|
|
{
|
|
// Alloc good quaddata.
|
|
_QuadDataLen= o._QuadDataLen;
|
|
delete [] _QuadData;
|
|
if(_QuadDataLen>0)
|
|
{
|
|
_QuadData= (uint8*)new uint8[_QuadDataLen];
|
|
// copy contents.
|
|
memcpy(_QuadData, o._QuadData, _QuadDataLen);
|
|
}
|
|
else
|
|
_QuadData= NULL;
|
|
|
|
// copy infos.
|
|
_Width= o._Width;
|
|
_Height= o._Height;
|
|
_X= o._X;
|
|
_Y= o._Y;
|
|
|
|
// copy good pointers.
|
|
_Quad.clear();
|
|
_Quad.resize(o._Quad.size(), NULL);
|
|
for(sint i=0; i<(sint)_Quad.size(); i++)
|
|
{
|
|
if(o._Quad[i])
|
|
{
|
|
uint32 off= (uint32)(o._Quad[i]-o._QuadData);
|
|
_Quad[i]= _QuadData+off;
|
|
}
|
|
}
|
|
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
|
|
// ***************************************************************************
|
|
void CChainQuad::getGridBounds(sint32 &x0, sint32 &y0, sint32 &x1, sint32 &y1, const CVector &minP, const CVector &maxP) const
|
|
{
|
|
x0= (sint32)floor(minP.x / _QuadElementSize) - _X;
|
|
y0= (sint32)floor(minP.y / _QuadElementSize) - _Y;
|
|
x1= (sint32) ceil(maxP.x / _QuadElementSize) - _X;
|
|
y1= (sint32) ceil(maxP.y / _QuadElementSize) - _Y;
|
|
// Manage selection of a point exactly on a quad bound
|
|
if(x1-x0==0)
|
|
x0--, x1++;
|
|
if(y1-y0==0)
|
|
y0--, y1++;
|
|
// clamp
|
|
x0= max(x0, (sint32)0);
|
|
y0= max(y0, (sint32)0);
|
|
x1= min(x1, (sint32)_Width);
|
|
y1= min(y1, (sint32)_Height);
|
|
}
|
|
|
|
|
|
// ***************************************************************************
|
|
void CChainQuad::build(const std::vector<COrderedChain> &ochains)
|
|
{
|
|
vector< list<CEdgeChainEntry> > tempQuad;
|
|
sint i,j;
|
|
|
|
// first, clear any pr-build.
|
|
contReset(_Quad);
|
|
delete [] _QuadData;
|
|
_QuadData= NULL;
|
|
_QuadDataLen= 0;
|
|
|
|
|
|
// 0. Find BBox of the grid. Allocate grid.
|
|
//=========================================
|
|
bool first=true;
|
|
CAABBox chainquadBBox;
|
|
// run all chains.
|
|
for(i=0;i<(sint)ochains.size();i++)
|
|
{
|
|
const std::vector<CVector2s> &vertices= ochains[i].getVertices();
|
|
|
|
// run all vertices.
|
|
for(j= 0; j<(sint)vertices.size();j++)
|
|
{
|
|
// enlarge bbox.
|
|
if(first)
|
|
first= false, chainquadBBox.setCenter(vertices[j].unpack3f());
|
|
else
|
|
chainquadBBox.extend(vertices[j].unpack3f());
|
|
}
|
|
}
|
|
|
|
// compute X,Y,Width, Height.
|
|
_X= (sint32)floor(chainquadBBox.getMin().x / _QuadElementSize);
|
|
_Y= (sint32)floor(chainquadBBox.getMin().y / _QuadElementSize);
|
|
_Width= (sint32)ceil(chainquadBBox.getMax().x / _QuadElementSize) - _X;
|
|
_Height= (sint32)ceil(chainquadBBox.getMax().y / _QuadElementSize) - _Y;
|
|
|
|
tempQuad.resize(_Width*_Height);
|
|
_Quad.resize(_Width*_Height, NULL);
|
|
|
|
|
|
// 1. For each edge, add them to the quadgrid.
|
|
//=========================================
|
|
// run all chains.
|
|
for(i=0;i<(sint)ochains.size();i++)
|
|
{
|
|
const std::vector<CVector2s> &vertices= ochains[i].getVertices();
|
|
|
|
sint numEdges= (sint)vertices.size()-1;
|
|
|
|
// run all edges.
|
|
for(j= 0; j<numEdges; j++)
|
|
{
|
|
const CVector p0= vertices[j].unpack3f();
|
|
const CVector p1= vertices[j+1].unpack3f();
|
|
CVector minP,maxP;
|
|
minP.minof(p0, p1);
|
|
maxP.maxof(p0, p1);
|
|
// PrecisionPb: extend a little this edge. This is important for special case like borders on zones.
|
|
if(minP.x-maxP.x==0)
|
|
minP.x-=0.001f, maxP.x+=0.001f;
|
|
if(minP.y-maxP.y==0)
|
|
minP.y-=0.001f, maxP.y+=0.001f;
|
|
|
|
|
|
// get bounding coordinate of this edge in the quadgrid.
|
|
sint32 x0, y0, x1, y1;
|
|
getGridBounds(x0, y0, x1, y1, minP, maxP);
|
|
|
|
// add this edge to all the quadnode it touch.
|
|
for(sint y= y0; y<y1; y++)
|
|
{
|
|
for(sint x= x0; x<x1; x++)
|
|
{
|
|
list<CEdgeChainEntry> &quadNode= tempQuad[y*_Width+x];
|
|
|
|
addEdgeToQuadNode(quadNode, i, j);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// 2. Mem optimisation: Use only 1 block for ALL quads of the grid.
|
|
//=========================================
|
|
sint memSize= 0;
|
|
// run all quads.
|
|
for(i=0;i<(sint)tempQuad.size();i++)
|
|
{
|
|
list<CEdgeChainEntry> &quadNode= tempQuad[i];
|
|
|
|
if(!quadNode.empty())
|
|
{
|
|
// add an entry for Len.
|
|
memSize+= sizeof(uint16);
|
|
// add N entry of CEdgeChainEntry.
|
|
memSize+= (sint)quadNode.size()*sizeof(CEdgeChainEntry);
|
|
}
|
|
}
|
|
|
|
// allocate.
|
|
_QuadData= (uint8*)new uint8[memSize];
|
|
_QuadDataLen= memSize;
|
|
|
|
|
|
// 3. Fill _QuadData with lists.
|
|
//=========================================
|
|
uint8 *ptr= _QuadData;
|
|
for(i=0;i<(sint)tempQuad.size();i++)
|
|
{
|
|
list<CEdgeChainEntry> &srcQuadNode= tempQuad[i];
|
|
list<CEdgeChainEntry>::iterator it;
|
|
|
|
if(!srcQuadNode.empty())
|
|
{
|
|
_Quad[i]= ptr;
|
|
|
|
// write len.
|
|
uint16 len= uint16(srcQuadNode.size());
|
|
*((uint16*)ptr)= len;
|
|
ptr+= sizeof(uint16);
|
|
|
|
// add entries.
|
|
it= srcQuadNode.begin();
|
|
for(j=0; j<len; j++, it++)
|
|
{
|
|
*((CEdgeChainEntry*)ptr)= *it;
|
|
ptr+= sizeof(CEdgeChainEntry);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// End.
|
|
}
|
|
|
|
|
|
// ***************************************************************************
|
|
void CChainQuad::addEdgeToQuadNode(list<CEdgeChainEntry> &quadNode, sint ochainId, sint edgeId)
|
|
{
|
|
// 0. try to find, insert an edge in an existing CEdgeChainEntry.
|
|
//=========================================
|
|
list<CEdgeChainEntry>::iterator it;
|
|
for(it= quadNode.begin(); it!=quadNode.end();it++)
|
|
{
|
|
if(it->OChainId==ochainId)
|
|
{
|
|
// selection is faster if we only manages a single start/end block.
|
|
it->EdgeStart= min(it->EdgeStart, (uint16)edgeId);
|
|
it->EdgeEnd= max(it->EdgeEnd, (uint16)(edgeId+1));
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
// 1. else, create new one.
|
|
//=========================================
|
|
CEdgeChainEntry entry;
|
|
entry.OChainId= uint16(ochainId);
|
|
entry.EdgeStart= uint16(edgeId);
|
|
entry.EdgeEnd= uint16(edgeId+1);
|
|
quadNode.push_back(entry);
|
|
}
|
|
|
|
|
|
// ***************************************************************************
|
|
sint CChainQuad::selectEdges(const NLMISC::CAABBox &bbox, CCollisionSurfaceTemp &cst) const
|
|
{
|
|
sint nRes=0;
|
|
sint i;
|
|
uint16 *ochainLUT= cst.OChainLUT;
|
|
|
|
// start: no edge found.
|
|
cst.EdgeChainEntries.clear();
|
|
|
|
// get bounding coordinate of this bbox in the quadgrid.
|
|
sint32 x0, y0, x1, y1;
|
|
getGridBounds(x0, y0, x1, y1, bbox.getMin(), bbox.getMax());
|
|
|
|
|
|
// run all intersected quads.
|
|
for(sint y= y0; y<y1; y++)
|
|
{
|
|
for(sint x= x0; x<x1; x++)
|
|
{
|
|
uint8 *quadNode= _Quad[y*_Width+x];
|
|
|
|
// no edgechain entry??
|
|
if(!quadNode)
|
|
continue;
|
|
|
|
// get edgechain entries
|
|
sint numEdgeChainEntries= *((uint16*)quadNode);
|
|
quadNode+= sizeof(uint16);
|
|
CEdgeChainEntry *ptrEdgeChainEntry= (CEdgeChainEntry*)quadNode;
|
|
|
|
// For each one, add it to the result list.
|
|
for(i=0;i<numEdgeChainEntries;i++)
|
|
{
|
|
uint16 ochainId= ptrEdgeChainEntry[i].OChainId;
|
|
|
|
// if ochain not yet inserted.
|
|
if(ochainLUT[ochainId]==0xFFFF)
|
|
{
|
|
// inc the list.
|
|
ochainLUT[ochainId]= uint16(nRes);
|
|
cst.EdgeChainEntries.push_back(ptrEdgeChainEntry[i]);
|
|
nRes++;
|
|
}
|
|
else
|
|
{
|
|
// extend the entry in the list.
|
|
uint16 id= ochainLUT[ochainId];
|
|
CEdgeChainEntry &ece= cst.EdgeChainEntries[id];
|
|
ece.EdgeStart= min(ece.EdgeStart, ptrEdgeChainEntry[i].EdgeStart);
|
|
ece.EdgeEnd= max(ece.EdgeEnd, ptrEdgeChainEntry[i].EdgeEnd);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// reset LUT to 0xFFFF for all ochains selected.
|
|
for(i=0;i<nRes;i++)
|
|
{
|
|
uint16 ochainId= cst.EdgeChainEntries[i].OChainId;
|
|
ochainLUT[ochainId]= 0xFFFF;
|
|
}
|
|
|
|
|
|
return nRes;
|
|
}
|
|
|
|
sint CChainQuad::selectEdges(CVector start, CVector end, CCollisionSurfaceTemp &cst) const
|
|
{
|
|
sint nRes=0;
|
|
sint i;
|
|
uint16 *ochainLUT= cst.OChainLUT;
|
|
|
|
// start: no edge found.
|
|
cst.EdgeChainEntries.clear();
|
|
|
|
if (end.x < start.x)
|
|
swap(start, end);
|
|
|
|
float minx = _X*_QuadElementSize,
|
|
miny = _Y*_QuadElementSize,
|
|
maxx = minx + _Width*_QuadElementSize,
|
|
maxy = miny + _Height*_QuadElementSize;
|
|
|
|
if (start.x > maxx || end.x < minx || start.y > maxy || end.y < miny)
|
|
return nRes;
|
|
|
|
if (start.x < minx)
|
|
{
|
|
start.y = start.y+(end.y-start.y)*(minx-start.x)/(end.x-start.x);
|
|
start.x = minx;
|
|
}
|
|
|
|
if (start.y < miny)
|
|
{
|
|
start.x = start.x+(end.x-start.x)*(miny-start.y)/(end.y-start.y);
|
|
start.y = miny;
|
|
}
|
|
|
|
if (end.x > maxx)
|
|
{
|
|
end.y = start.y+(end.y-start.y)*(minx-start.x)/(end.x-start.x);
|
|
end.x = maxx;
|
|
}
|
|
|
|
if (end.y > maxy)
|
|
{
|
|
end.x = start.x+(end.x-start.x)*(miny-start.y)/(end.y-start.y);
|
|
end.y = maxy;
|
|
}
|
|
|
|
sint32 x0, x1, ya, yb;
|
|
sint x, y;
|
|
float fx, fxa, fxb, fya, fyb;
|
|
|
|
x0 = (sint32)floor(start.x / _QuadElementSize) - _X;
|
|
x1 = (sint32)ceil(end.x / _QuadElementSize) - _X;
|
|
fx = (x0+_X)*_QuadElementSize;
|
|
|
|
for (x=x0; x<x1; ++x)
|
|
{
|
|
fxa = (fx < start.x) ? start.x : fx;
|
|
fxb = (fx+_QuadElementSize > end.x) ? end.x : fx+_QuadElementSize;
|
|
|
|
fya = start.y+(end.y-start.y)*(fxa-start.x)/(end.x-start.x);
|
|
fyb = start.y+(end.y-start.y)*(fxb-start.x)/(end.x-start.x);
|
|
|
|
if (fya > fyb)
|
|
swap (fya, fyb);
|
|
|
|
ya = (sint32)floor(fya / _QuadElementSize) - _Y;
|
|
yb = (sint32)ceil(fyb / _QuadElementSize) - _Y;
|
|
|
|
fx += _QuadElementSize;
|
|
|
|
for (y=ya; y<yb; ++y)
|
|
{
|
|
uint8 *quadNode= _Quad[y*_Width+x];
|
|
|
|
// no edgechain entry??
|
|
if(!quadNode)
|
|
continue;
|
|
|
|
// get edgechain entries
|
|
sint numEdgeChainEntries= *((uint16*)quadNode);
|
|
quadNode+= sizeof(uint16);
|
|
CEdgeChainEntry *ptrEdgeChainEntry= (CEdgeChainEntry*)quadNode;
|
|
|
|
// For each one, add it to the result list.
|
|
for(i=0;i<numEdgeChainEntries;i++)
|
|
{
|
|
uint16 ochainId= ptrEdgeChainEntry[i].OChainId;
|
|
|
|
// if ochain not yet inserted.
|
|
if(ochainLUT[ochainId]==0xFFFF)
|
|
{
|
|
// inc the list.
|
|
ochainLUT[ochainId]= uint16(nRes);
|
|
cst.EdgeChainEntries.push_back(ptrEdgeChainEntry[i]);
|
|
nRes++;
|
|
}
|
|
else
|
|
{
|
|
// extend the entry in the list.
|
|
uint16 id= ochainLUT[ochainId];
|
|
CEdgeChainEntry &ece= cst.EdgeChainEntries[id];
|
|
ece.EdgeStart= min(ece.EdgeStart, ptrEdgeChainEntry[i].EdgeStart);
|
|
ece.EdgeEnd= max(ece.EdgeEnd, ptrEdgeChainEntry[i].EdgeEnd);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// reset LUT to 0xFFFF for all ochains selected.
|
|
for(i=0;i<nRes;i++)
|
|
{
|
|
uint16 ochainId= cst.EdgeChainEntries[i].OChainId;
|
|
ochainLUT[ochainId]= 0xFFFF;
|
|
}
|
|
|
|
return nRes;
|
|
}
|
|
|
|
// ***************************************************************************
|
|
void CChainQuad::serial(NLMISC::IStream &f)
|
|
{
|
|
/*
|
|
Version 0:
|
|
- base version.
|
|
*/
|
|
(void)f.serialVersion(0);
|
|
uint i;
|
|
|
|
// serial basics.
|
|
f.serial(_X, _Y, _Width, _Height, _QuadDataLen);
|
|
|
|
|
|
// serial _QuadData.
|
|
if(f.isReading())
|
|
{
|
|
delete [] _QuadData;
|
|
if(_QuadDataLen>0)
|
|
_QuadData= (uint8*)new uint8[_QuadDataLen];
|
|
else
|
|
_QuadData= NULL;
|
|
}
|
|
// Since we have only uint16 (see CEdgeChainEntry), serial them in a single block.
|
|
uint16 *ptrQData= (uint16*)_QuadData;
|
|
for(i=0;i<_QuadDataLen/2; i++, ptrQData++)
|
|
{
|
|
f.serial(*ptrQData);
|
|
}
|
|
|
|
|
|
// serial _Quad.
|
|
std::vector<uint32> offsets;
|
|
uint32 len;
|
|
uint32 val;
|
|
if(f.isReading())
|
|
{
|
|
// len/resize.
|
|
f.serial(len);
|
|
offsets.resize(len);
|
|
contReset(_Quad);
|
|
_Quad.resize(len);
|
|
|
|
// read offsets -> ptrs.
|
|
for(i=0; i<len; i++)
|
|
{
|
|
f.serial(val);
|
|
if(val== 0xFFFFFFFF)
|
|
_Quad[i]= NULL;
|
|
else
|
|
_Quad[i]= _QuadData+val;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// len/resize.
|
|
len= (uint32)_Quad.size();
|
|
f.serial(len);
|
|
|
|
// write offsets.
|
|
for(i=0; i<len; i++)
|
|
{
|
|
uint8 *ptr= _Quad[i];
|
|
if(ptr==NULL)
|
|
val= 0xFFFFFFFF;
|
|
else
|
|
val= (uint32)(ptr-_QuadData);
|
|
f.serial(val);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} // NLPACS
|