42 int GetSlopePixelZ(
int x, 
int y);
 
   86   pt.x = (y - x) * 2 * ZOOM_LVL_BASE;
 
   87   pt.y = (y + x - z) * ZOOM_LVL_BASE;
 
  114   Point pt = {(y * 2 - x) >> (2 + ZOOM_LVL_SHIFT), (y * 2 + x) >> (2 + ZOOM_LVL_SHIFT)};
 
  133 bool HasFoundationNW(
TileIndex tile, 
Slope slope_here, uint z_here);
 
  134 bool HasFoundationNE(
TileIndex tile, 
Slope slope_here, uint z_here);
 
  139 void InitializeLandscape();