From b71e46505e5e3dc2213e67124dd1d245ca7a2cbb Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Tue, 8 Feb 2022 16:17:42 +0100
Subject: [PATCH] fixed crash bug caused by accessing invalid (off-playfield)
 array positions

This bug caused accessing array "GfxElementEmpty[][]" out of bounds if
level position is not inside the playfield.
---
 src/tools.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/tools.c b/src/tools.c
index 0872e24b..6a998afb 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -1996,11 +1996,11 @@ void DrawScreenElementExt(int x, int y, int dx, int dy, int element,
   int graphic;
   int frame;
 
-  if (element == EL_EMPTY)
-    element = GfxElementEmpty[lx][ly];
-
   if (IN_LEV_FIELD(lx, ly))
   {
+    if (element == EL_EMPTY)
+      element = GfxElementEmpty[lx][ly];
+
     SetRandomAnimationValue(lx, ly);
 
     graphic = el_act_dir2img(element, GfxAction[lx][ly], GfxDir[lx][ly]);
-- 
2.34.1