fixed crash bug caused by division by zero

[rocksndiamonds.git] / src / init.c

diff --git a/src/init.c b/src/init.c
index eb18b6da49da8f47cdd69267a4e5742512550655..a022f3944ab4858500e60a9021175b0935ae3dc7 100644 (file)
--- a/src/init.c
+++ b/src/init.c
@@ -1476,7 +1476,7 @@ static void set_graphic_parameters_ext(int graphic, int *parameter,
   else
     g->anim_frames = 1;
 
-  if (g->anim_frames == 0)             // frames must be at least 1
+  if (g->anim_frames < 1)              // frames must be at least 1
     g->anim_frames = 1;
 
   g->anim_frames_per_line =
@@ -1484,7 +1484,7 @@ static void set_graphic_parameters_ext(int graphic, int *parameter,
      parameter[GFX_ARG_FRAMES_PER_LINE] : anim_frames_per_line);
 
   g->anim_delay = parameter[GFX_ARG_DELAY];
-  if (g->anim_delay == 0)              // delay must be at least 1
+  if (g->anim_delay < 1)               // delay must be at least 1
     g->anim_delay = 1;
 
   g->anim_mode = parameter[GFX_ARG_ANIM_MODE];
@@ -1552,6 +1552,9 @@ static void set_graphic_parameters_ext(int graphic, int *parameter,
   g->x            = parameter[GFX_ARG_X];      // (may be uninitialized,
   g->y            = parameter[GFX_ARG_Y];      // unlike src_x and src_y)
 
+  if (g->step_delay < 1)                       // delay must be at least 1
+    g->step_delay = 1;
+
   // this is only used for drawing font characters
   g->draw_xoffset = parameter[GFX_ARG_DRAW_XOFFSET];
   g->draw_yoffset = parameter[GFX_ARG_DRAW_YOFFSET];