map: Fix layer rect math

1 files changed, 2 insertions, 2 deletions

diff --git a/src/map.c b/src/map.c
index 41d6af8..53dd570 100644
--- a/src/map.c
+++ b/src/map.c
@@ -542,8 +542,8 @@ _db_map_render_layer(struct db_map *map, struct db_map_layer *layer,
 				 tile_rect.h  = tileheight;
 				 tile_rect.x *= tile_rect.w;
 				 tile_rect.y *= tile_rect.h;
-				layer_rect.x  = i % columns;
-				layer_rect.y  = i / columns;
+				layer_rect.x  = i % map->w;
+				layer_rect.y  = i / map->w;
 				layer_rect.w  = tilewidth;
 				layer_rect.h  = tileheight;
 				layer_rect.x *= layer_rect.w;