From: Holger Schemel <info@artsoft.org>
Date: Thu, 18 Nov 2021 22:16:32 +0000 (+0100)
Subject: added graphics animation mode "tiled" for tiled graphics on elements
X-Git-Tag: 4.3.1.0~27
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=fb0df571e1a4207bc756e73f7954e1ba05fa1fad;p=rocksndiamonds.git

added graphics animation mode "tiled" for tiled graphics on elements
---

diff --git a/src/files.c b/src/files.c
index 16fe01ed..9a4999b8 100644
--- a/src/files.c
+++ b/src/files.c
@@ -11985,6 +11985,7 @@ int get_parameter_value(char *value_raw, char *suffix, int type)
 	      string_has_parameter(value, "vertical")	? ANIM_VERTICAL :
 	      string_has_parameter(value, "centered")	? ANIM_CENTERED :
 	      string_has_parameter(value, "all")	? ANIM_ALL :
+	      string_has_parameter(value, "tiled")	? ANIM_TILED :
 	      ANIM_DEFAULT);
 
     if (string_has_parameter(value, "once"))
diff --git a/src/libgame/system.h b/src/libgame/system.h
index 306757a6..90a7fe4f 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -369,6 +369,7 @@
 #define ANIM_STATIC_PANEL	(1 << 13)
 #define ANIM_ALL		(1 << 14)
 #define ANIM_ONCE		(1 << 15)
+#define ANIM_TILED		(1 << 16)
 
 #define ANIM_DEFAULT		ANIM_LOOP
 
diff --git a/src/tools.c b/src/tools.c
index 2ddbb303..e16a35ff 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -1483,6 +1483,20 @@ int getGraphicAnimationFrame(int graphic, int sync_frame)
 
 int getGraphicAnimationFrameXY(int graphic, int lx, int ly)
 {
+  if (graphic_info[graphic].anim_mode & ANIM_TILED)
+  {
+    struct GraphicInfo *g = &graphic_info[graphic];
+    int xsize = MAX(1, g->anim_frames_per_line);
+    int ysize = MAX(1, g->anim_frames / xsize);
+    int xoffset = g->anim_start_frame % xsize;
+    int yoffset = g->anim_start_frame % ysize;
+    int x = (lx + xoffset) % xsize;
+    int y = (ly + yoffset) % ysize;
+    int sync_frame = y * xsize + x;
+
+    return sync_frame % g->anim_frames;
+  }
+
   return getGraphicAnimationFrame(graphic, GfxFrame[lx][ly]);
 }