From bb685147f9636112da4ee7e3a6e6dcbd739d8da4 Mon Sep 17 00:00:00 2001
From: qarmin <mikrutrafal54@gmail.com>
Date: Tue, 8 Oct 2019 15:46:38 +0200
Subject: [PATCH] Fix crash in TileMap::update_cell_bitmask

---
 scene/2d/tile_map.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scene/2d/tile_map.cpp b/scene/2d/tile_map.cpp
index c9ba51bafb..173214dfe4 100644
--- a/scene/2d/tile_map.cpp
+++ b/scene/2d/tile_map.cpp
@@ -955,6 +955,7 @@ void TileMap::update_bitmask_region(const Vector2 &p_start, const Vector2 &p_end
 
 void TileMap::update_cell_bitmask(int p_x, int p_y) {
 
+	ERR_FAIL_COND_MSG(tile_set.is_null(), "Cannot update cell bitmask if Tileset is not open.");
 	PosKey p(p_x, p_y);
 	Map<PosKey, Cell>::Element *E = tile_map.find(p);
 	if (E != NULL) {