I guess I was thinking something like this: http://roguebasin.roguelikedevelopment.org/index.php/Eligloscode http://roguebasin.roguelikedevelopment.org/index.p

I guess I was thinking something like this: http://roguebasin.roguelikedevelopment.org/index.php/Eligloscode http://roguebasin.roguelikedevelopment.org/index.php/Eliglos... (the second example, "raycasting"). You'd work on the "native tile resolution". I.e. you just "swipe" lines starting at the player position to the edge of the map, in a circle; as soon as you hit an obstacle tile, you stop marking the tiles ("pixels") on the line as lightened. No need to do any per-object iteration (as long as the tile map contains object references in tile positions)