ty = y / TILE_SIZE;
if (tx >= state->width || ty >= state->height)
return NULL;
- if (tx % TILE_SIZE >= TILE_SIZE - TILE_BORDER ||
- ty % TILE_SIZE >= TILE_SIZE - TILE_BORDER)
+ if (x % TILE_SIZE >= TILE_SIZE - TILE_BORDER ||
+ y % TILE_SIZE >= TILE_SIZE - TILE_BORDER)
return NULL;
/*