From: Holger Schemel <holger.schemel@virtion.de>
Date: Mon, 1 Jul 2024 08:17:37 +0000 (+0200)
Subject: fixed bug causing BD engine hanging in wrap-around scrolling edge case
X-Git-Tag: 4.4.0.0-test-3~10
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=a027f851efb6f152594af57d465484ee697ae0fb;p=rocksndiamonds.git

fixed bug causing BD engine hanging in wrap-around scrolling edge case
---

diff --git a/src/game_bd/bd_graphics.c b/src/game_bd/bd_graphics.c
index c509ec57..793987e2 100644
--- a/src/game_bd/bd_graphics.c
+++ b/src/game_bd/bd_graphics.c
@@ -334,6 +334,11 @@ boolean gd_scroll(GdGame *game, boolean exact_scroll, boolean immediate)
     scroll_speed_last = -1;
 
   // check if active player is visible at the moment.
+  // but only if scrolling happened at all!
+  if (!changed)
+    return FALSE;
+
+  // check if active player is outside drawing area. if yes, we should wait for scrolling.
   return player_out_of_window(game, player_x, player_y);
 }