[ODE] Patch for QuadTreeSpace

[Nguyen Binh]

Hi Erwin,

  I found a peoblem in dxQuadTreeSpace which may result in mem leaks.
  Here is my description and solution
  
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// line 380 in collision_quadtreespace.cpp
dxQuadTreeSpace::~dxQuadTreeSpace(){
        int Depth = 0;
        Block* Current = &Blocks[0];
        while (Current){
                Depth++;
                Current = Current->Children;
        }

        int BlockCount = 0;
        int i = 0;
        for ( i = 0; i < Depth; i++){
                BlockCount += (int)pow(SPLITS, i);
        }

        // Add code to delete all geoms in blocks
        Block* currentBlock = NULL;
        dxGeom *g,*n;
        for (i = 0; i < BlockCount; i ++)
        {
                currentBlock = &Blocks[i];
                
                for (g = currentBlock->First; g; g=n) 
                {
                        n = g->next;
                        dGeomDestroy (g);
                }
        }
        // End
        
        dFree(Blocks, BlockCount * sizeof(Block));
        dFree(CurrentChild, (Depth + 1) * sizeof(int));
}  
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With this patch, all geoms attached to QuadTreeSpace will
automatically destroy when we call dSpaceDestroy().


--
Best regards,

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   Nguyen Binh
   Software Engineer
   Glass Egg Digital Media
   
   E.Town Building  
   7th Floor, 364 CongHoa Street
   Tan Binh District,
   HoChiMinh City,
   VietNam,

   Phone : +84 8 8109018
   Fax   : +84 8 8109013

     www.glassegg.com
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