selection.ec

   bool figurePosition(int x, int y, Point pos)
   {
      OldList list {};
      display.StartSelection(x,y, 0,0);
      display.SetCamera(null, camera);
      display.CollectHits();
      display.IntersectPolygons();

      pos = { -1, -1 };

      display.DrawObject(boardModel);
      if(display.GetHits(list))
      {
         Vector3D viewSpace, worldSpace;
         display.GetIntersect(viewSpace);
         camera.Untransform(viewSpace, worldSpace);
         pos.x = (int)((worldSpace.x - offset3D) / tileSize3D + 0.5) - 1;
         pos.y = (int)((worldSpace.z - offset3D) / tileSize3D + 0.5) - 1;
         list.Free(null);
      }
      display.SetCamera(null, null);
      display.StopSelection();

      return pos.y >= 0 && pos.y < goSize && pos.x >= 0 && pos.x < goSize;
   }