(svn r10519) -Fix: when getting a "nearby" tile, make sure you never roam outside of the map.

17 years ago · de084ace1c
parent 9dee540233
commit de084ace1c
1 changed files with 2 additions and 1 deletions
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@ -265,5 +265,6 @@ TileIndex GetNearbyTile(byte parameter, TileIndex tile)
 	if (x >= 8) x -= 16;
 	if (y >= 8) y -= 16;

-	return tile + TileDiffXY(x, y);
+	/* Make sure we never roam outside of the map */
+	return TILE_MASK(tile + TileDiffXY(x, y));
 }