rnd-20030208-1-src

[rocksndiamonds.git] / src / libgame / toons.c

diff --git a/src/libgame/toons.c b/src/libgame/toons.c
index 84a21c2569d2ce89cb8ebc537eac39aec2d7d329..5c0d4444fbae5f68d1268d5b717ceaa924662251 100644 (file)
--- a/src/libgame/toons.c
+++ b/src/libgame/toons.c
@@ -35,31 +35,40 @@ int getAnimationFrame(int num_frames, int delay, int mode, int start_frame,
 
   sync_frame += start_frame * delay;
 
-  if (mode & ANIM_LOOP)                        /* normal, looping animation */
+  if (mode & ANIM_LOOP)                        /* looping animation */
   {
     frame = (sync_frame % (delay * num_frames)) / delay;
   }
-  else if (mode & ANIM_LINEAR)         /* normal, non-looping animation */
+  else if (mode & ANIM_LINEAR)         /* linear (non-looping) animation */
   {
     frame = sync_frame / delay;
 
     if (frame > num_frames - 1)
       frame = num_frames - 1;
   }
-  else if (mode & ANIM_PINGPONG)       /* use border frames once */
+  else if (mode & ANIM_PINGPONG)       /* oscillate (border frames once) */
   {
     int max_anim_frames = 2 * num_frames - 2;
 
     frame = (sync_frame % (delay * max_anim_frames)) / delay;
     frame = (frame < num_frames ? frame : max_anim_frames - frame);
   }
-  else if (mode & ANIM_PINGPONG2)      /* use border frames twice */
+  else if (mode & ANIM_PINGPONG2)      /* oscillate (border frames twice) */
   {
     int max_anim_frames = 2 * num_frames;
 
     frame = (sync_frame % (delay * max_anim_frames)) / delay;
     frame = (frame < num_frames ? frame : max_anim_frames - frame - 1);
   }
+  else if (mode & ANIM_RANDOM)         /* play frames in random order */
+  {
+    /* note: expect different frames for the same delay cycle! */
+
+    if (anim.random_frame < 0)
+      frame = SimpleRND(num_frames);
+    else
+      frame = anim.random_frame % num_frames;
+  }
 
   if (mode & ANIM_REVERSE)             /* use reverse animation direction */
     frame = num_frames - frame - 1;
@@ -78,7 +87,8 @@ void InitToonScreen(Bitmap *save_buffer,
                    boolean (*redraw_needed_function)(void),
                    struct ToonInfo *toons, int num_toons,
                    int startx, int starty,
-                   int width, int height)
+                   int width, int height,
+                   int frame_delay_value)
 {
   screen_info.save_buffer = save_buffer;
   screen_info.update_function = update_function;
@@ -90,6 +100,7 @@ void InitToonScreen(Bitmap *save_buffer,
   screen_info.starty = starty;
   screen_info.width = width;
   screen_info.height = height;
+  screen_info.frame_delay_value = frame_delay_value;
 }
 
 void DrawAnim(Bitmap *toon_bitmap, GC toon_clip_gc,
@@ -148,10 +159,10 @@ boolean AnimateToon(int toon_nr, boolean restart)
   {
     horiz_move = (anim->direction & (ANIMDIR_LEFT | ANIMDIR_RIGHT));
     vert_move = (anim->direction & (ANIMDIR_UP | ANIMDIR_DOWN));
-    anim_delay_value = anim->move_delay;
+    anim_delay_value = anim->step_delay * screen_info.frame_delay_value;
 
     frame = getAnimationFrame(anim->anim_frames, anim->anim_delay,
-                             anim->anim_mode, anim->start_frame,
+                             anim->anim_mode, anim->anim_start_frame,
                              animation_frame_counter++);
 
     if (horiz_move)
@@ -167,12 +178,12 @@ boolean AnimateToon(int toon_nr, boolean restart)
 
       if (anim->direction == ANIMDIR_RIGHT)
       {
-       delta_x = anim->stepsize;
+       delta_x = anim->step_offset;
        pos_x = -anim->width + delta_x;
       }
       else
       {
-       delta_x = -anim->stepsize;
+       delta_x = -anim->step_offset;
        pos_x = screen_info.width + delta_x;
       }
       delta_y = 0;
@@ -188,22 +199,22 @@ boolean AnimateToon(int toon_nr, boolean restart)
 
       if (anim->direction == ANIMDIR_DOWN)
       {
-       delta_y = anim->stepsize;
+       delta_y = anim->step_offset;
        pos_y = -anim->height + delta_y;
       }
       else
       {
-       delta_y = -anim->stepsize;
+       delta_y = -anim->step_offset;
        pos_y = screen_info.width + delta_y;
       }
       delta_x = 0;
     }
   }
 
-  if (pos_x <= -anim->width        - anim->stepsize ||
-      pos_x >=  screen_info.width  + anim->stepsize ||
-      pos_y <= -anim->height       - anim->stepsize ||
-      pos_y >=  screen_info.height + anim->stepsize)
+  if (pos_x <= -anim->width        - anim->step_offset ||
+      pos_x >=  screen_info.width  + anim->step_offset ||
+      pos_y <= -anim->height       - anim->step_offset ||
+      pos_y >=  screen_info.height + anim->step_offset)
     return TRUE;
 
   if (!DelayReached(&anim_delay, anim_delay_value))
@@ -228,8 +239,8 @@ boolean AnimateToon(int toon_nr, boolean restart)
   else if (pos_y > screen_info.height)
     pos_y = screen_info.height;
 
-  pad_x = (horiz_move ? anim->stepsize : 0);
-  pad_y = (vert_move  ? anim->stepsize : 0);
+  pad_x = (horiz_move ? anim->step_offset : 0);
+  pad_y = (vert_move  ? anim->step_offset : 0);
   src_x = anim->src_x + frame * anim->width;
   src_y = anim->src_y;
   dest_x = pos_x;
@@ -267,7 +278,7 @@ boolean AnimateToon(int toon_nr, boolean restart)
   pos_y += delta_y;
 
   frame = getAnimationFrame(anim->anim_frames, anim->anim_delay,
-                           anim->anim_mode, anim->start_frame,
+                           anim->anim_mode, anim->anim_start_frame,
                            animation_frame_counter++);
 
   return FALSE;