From f5859ace642a543cafcd27f8fc7b96d8baf31436 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sun, 16 Jul 2006 23:09:07 +0200
Subject: [PATCH] rnd-20060716-2-src * fixed bug (very special case) with
 CE_SCORE_GETS_ZERO, which can   affect multiple instances of the same CE,
 although this kind of   change condition usually only affects one single
 custom element

---
 ChangeLog      |  5 +++++
 src/conftime.h |  2 +-
 src/game.c     | 22 ++++++++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index b568e17a..4a0bb135 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-07-16
+	* fixed bug (very special case) with CE_SCORE_GETS_ZERO, which can
+	  affect multiple instances of the same CE, although this kind of
+	  change condition usually only affects one single custom element
+
 2006-07-16
 	* version number set to 3.2.1
 
diff --git a/src/conftime.h b/src/conftime.h
index 34832b94..200c0a43 100644
--- a/src/conftime.h
+++ b/src/conftime.h
@@ -1 +1 @@
-#define COMPILE_DATE_STRING "[2006-07-16 14:46]"
+#define COMPILE_DATE_STRING "[2006-07-16 23:06]"
diff --git a/src/game.c b/src/game.c
index f06c86d8..20491136 100644
--- a/src/game.c
+++ b/src/game.c
@@ -8420,6 +8420,8 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
 
 	if (ei->collect_score == 0)
 	{
+	  int xx, yy;
+
 #if 0
 	  printf("::: CE_SCORE_GETS_ZERO\n");
 #endif
@@ -8430,6 +8432,26 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
 #if 0
 	  printf("::: RESULT: %d, %d\n", Feld[x][y], ChangePage[x][y]);
 #endif
+
+#if 1
+	  /*
+	    This is a very special case that seems to be a mixture between
+	    CheckElementChange() and CheckTriggeredElementChange(): while
+	    the first one only affects single elements that are triggered
+	    directly, the second one affects multiple elements in the playfield
+	    that are triggered indirectly by another element. This is a third
+	    case: Changing the CE score always affects multiple identical CEs,
+	    so every affected CE must be checked, not only the single CE for
+	    which the CE score was changed in the first place (as every instance
+	    of that CE shares the same CE score, and therefore also can change)!
+	  */
+	  SCAN_PLAYFIELD(xx, yy)
+	  {
+	    if (Feld[xx][yy] == element)
+	      CheckElementChange(xx, yy, element, EL_UNDEFINED,
+				 CE_SCORE_GETS_ZERO);
+	  }
+#endif
 	}
       }
 
-- 
2.34.1