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(svn r16552) -Codechange: make AddTileIndexDiffCWrap() a bit faster

This commit is contained in:
smatz 2009-06-10 14:07:08 +00:00
parent d6996c110a
commit 5e1c59c3de
1 changed files with 3 additions and 4 deletions
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7
src/map_func.h
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@ -297,10 +297,9 @@ static inline TileIndex AddTileIndexDiffCWrap(TileIndex tile, TileIndexDiffC dif
{
int x = TileX(tile) + diff.x;
int y = TileY(tile) + diff.y;
if (x < 0 || y < 0 || x > (int)MapMaxX() || y > (int)MapMaxY())
return INVALID_TILE;
else
return TileXY(x, y);
/* Negative value will become big positive value after cast */
if ((uint)x >= MapSizeX() || (uint)y >= MapSizeY()) return INVALID_TILE;
return TileXY(x, y);
}
/**