From dbba72fb511aee11057e6db5d0e9a4d53c9a0ddc Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sun, 20 Aug 2023 13:31:23 +0200
Subject: [PATCH] added setting global animation position from CE triggering
 that animation

---
 src/anim.c           | 16 +++++++++++++---
 src/anim.h           |  2 +-
 src/files.c          |  1 +
 src/game.c           |  9 ++++++++-
 src/libgame/system.h |  3 ++-
 5 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/src/anim.c b/src/anim.c
index d570be06..219c79fd 100644
--- a/src/anim.c
+++ b/src/anim.c
@@ -1360,7 +1360,8 @@ static void InitGlobalAnim_Triggered(struct GlobalAnimPartControlInfo *part,
   }
 }
 
-static void InitGlobalAnim_Triggered_ByCustomElement(int nr, int page)
+static void InitGlobalAnim_Triggered_ByCustomElement(int nr, int page,
+						     int x, int y)
 {
   struct GlobalAnimControlInfo *ctrl = &global_anim_ctrl[GAME_MODE_PLAYING];
 
@@ -1383,6 +1384,14 @@ static void InitGlobalAnim_Triggered_ByCustomElement(int nr, int page)
 
       if (isClickablePart(part2, mask))
       {
+	struct GraphicInfo *c = &part2->control_info;
+
+	if (c->position == POS_CE)
+	{
+	  part2->x = c->x + x;
+	  part2->y = c->y + y;
+	}
+
 	part2->triggered = TRUE;
 
 #if 0
@@ -2148,11 +2157,12 @@ int getGlobalAnimSyncFrame(void)
   return anim_sync_frame;
 }
 
-void HandleGlobalAnimEventByElementChange(int element, int page)
+void HandleGlobalAnimEventByElementChange(int element, int page, int x, int y)
 {
   if (!IS_CUSTOM_ELEMENT(element))
     return;
 
   // custom element stored as 0 to 255, change page stored as 1 to 32
-  InitGlobalAnim_Triggered_ByCustomElement(element - EL_CUSTOM_START, page + 1);
+  InitGlobalAnim_Triggered_ByCustomElement(element - EL_CUSTOM_START, page + 1,
+					   x, y);
 }
diff --git a/src/anim.h b/src/anim.h
index 5224be13..0bde9a0b 100644
--- a/src/anim.h
+++ b/src/anim.h
@@ -22,7 +22,7 @@ void DrawGlobalAnimations(int, int);
 void RestartGlobalAnimsByStatus(int);
 
 boolean HandleGlobalAnimClicks(int, int, int, boolean);
-void HandleGlobalAnimEventByElementChange(int, int);
+void HandleGlobalAnimEventByElementChange(int, int, int, int);
 
 int getGlobalAnimSyncFrame(void);
 
diff --git a/src/files.c b/src/files.c
index 13141d7f..77fe2cdb 100644
--- a/src/files.c
+++ b/src/files.c
@@ -11829,6 +11829,7 @@ int get_parameter_value(char *value_raw, char *suffix, int type)
 	      strEqual(value, "lower")  ? POS_LOWER :
 	      strEqual(value, "bottom") ? POS_BOTTOM :
 	      strEqual(value, "any")    ? POS_ANY :
+	      strEqual(value, "ce")     ? POS_CE :
 	      strEqual(value, "last")   ? POS_LAST : POS_UNDEFINED);
   }
   else if (strEqual(suffix, ".align"))
diff --git a/src/game.c b/src/game.c
index 299fd72b..8cabb12d 100644
--- a/src/game.c
+++ b/src/game.c
@@ -10716,7 +10716,14 @@ static boolean ChangeElement(int x, int y, int element, int page)
   ChangeCount[x][y]++;		// count number of changes in the same frame
 
   if (ei->has_anim_event)
-    HandleGlobalAnimEventByElementChange(element, page);
+  {
+    int fx = getFieldbufferOffsetX_RND(ScreenMovDir, ScreenGfxPos);
+    int fy = getFieldbufferOffsetY_RND(ScreenMovDir, ScreenGfxPos);
+    int sx = FX + SCREENX(x) * TILEX_VAR;
+    int sy = FY + SCREENY(y) * TILEY_VAR;
+
+    HandleGlobalAnimEventByElementChange(element, page, sx - fx, sy - fy);
+  }
 
   if (change->explode)
   {
diff --git a/src/libgame/system.h b/src/libgame/system.h
index e429d233..05f9f08a 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -478,7 +478,8 @@
 #define POS_LOWER		5
 #define POS_BOTTOM		6
 #define POS_ANY			7
-#define POS_LAST		8
+#define POS_CE			8
+#define POS_LAST		9
 
 // values for text alignment
 #define ALIGN_LEFT		(1 << 0)
-- 
2.34.1