major cleanup of preprocessor hell
[rocksndiamonds.git] / src / libgame / toons.c
index 5c0d4444fbae5f68d1268d5b717ceaa924662251..8d0a8ba53a57d515fcecac5b469f5a621c40ec4d 100644 (file)
@@ -1,15 +1,13 @@
-/***********************************************************
-* Artsoft Retro-Game Library                               *
-*----------------------------------------------------------*
-* (c) 1995-2002 Artsoft Entertainment                      *
-*               Holger Schemel                             *
-*               Detmolder Strasse 189                      *
-*               33604 Bielefeld                            *
-*               Germany                                    *
-*               e-mail: info@artsoft.org                   *
-*----------------------------------------------------------*
-* toons.c                                                  *
-***********************************************************/
+// ============================================================================
+// Artsoft Retro-Game Library
+// ----------------------------------------------------------------------------
+// (c) 1995-2014 by Artsoft Entertainment
+//                         Holger Schemel
+//                 info@artsoft.org
+//                 http://www.artsoft.org/
+// ----------------------------------------------------------------------------
+// toons.c
+// ============================================================================
 
 #include "toons.h"
 #include "misc.h"
@@ -48,7 +46,7 @@ int getAnimationFrame(int num_frames, int delay, int mode, int start_frame,
   }
   else if (mode & ANIM_PINGPONG)       /* oscillate (border frames once) */
   {
-    int max_anim_frames = 2 * num_frames - 2;
+    int max_anim_frames = (num_frames > 1 ? 2 * num_frames - 2 : 1);
 
     frame = (sync_frame % (delay * max_anim_frames)) / delay;
     frame = (frame < num_frames ? frame : max_anim_frames - frame);
@@ -64,10 +62,14 @@ int getAnimationFrame(int num_frames, int delay, int mode, int start_frame,
   {
     /* note: expect different frames for the same delay cycle! */
 
-    if (anim.random_frame < 0)
-      frame = SimpleRND(num_frames);
+    if (gfx.anim_random_frame < 0)
+      frame = GetSimpleRandom(num_frames);
     else
-      frame = anim.random_frame % num_frames;
+      frame = gfx.anim_random_frame % num_frames;
+  }
+  else if (mode & (ANIM_CE_VALUE | ANIM_CE_SCORE | ANIM_CE_DELAY))
+  {
+    frame = sync_frame % num_frames;
   }
 
   if (mode & ANIM_REVERSE)             /* use reverse animation direction */
@@ -81,6 +83,20 @@ int getAnimationFrame(int num_frames, int delay, int mode, int start_frame,
 /* toon animation functions                                                  */
 /* ========================================================================= */
 
+static int get_toon_direction(char *direction_string_raw)
+{
+  char *direction_string = getStringToLower(direction_string_raw);
+  int direction = (strEqual(direction_string, "left")  ? MV_LEFT :
+                  strEqual(direction_string, "right") ? MV_RIGHT :
+                  strEqual(direction_string, "up")    ? MV_UP :
+                  strEqual(direction_string, "down")  ? MV_DOWN :
+                  MV_NONE);
+
+  free(direction_string);
+
+  return direction;
+}
+
 void InitToonScreen(Bitmap *save_buffer,
                    void (*update_function)(void),
                    void (*prepare_backbuffer_function)(void),
@@ -107,45 +123,57 @@ void DrawAnim(Bitmap *toon_bitmap, GC toon_clip_gc,
              int src_x, int src_y, int width, int height,
              int dest_x, int dest_y, int pad_x, int pad_y)
 {
-  int buf_x = DOOR_GFX_PAGEX3, buf_y = DOOR_GFX_PAGEY1;
+  int pad_dest_x = dest_x - pad_x;
+  int pad_dest_y = dest_y - pad_y;
+  int pad_width  = width  + 2 * pad_x;
+  int pad_height = height + 2 * pad_y;
+  int buffer_x = 0;
+  int buffer_y = 0;
+
+  /* correct values to avoid off-screen blitting (start position) */
+  if (pad_dest_x < screen_info.startx)
+  {
+    pad_width -= (screen_info.startx - pad_dest_x);
+    pad_dest_x = screen_info.startx;
+  }
+  if (pad_dest_y < screen_info.starty)
+  {
+    pad_height -= (screen_info.starty - pad_dest_y);
+    pad_dest_y = screen_info.starty;
+  }
+
+  /* correct values to avoid off-screen blitting (blit size) */
+  if (pad_width > screen_info.width)
+    pad_width = screen_info.width;
+  if (pad_height > screen_info.height)
+    pad_height = screen_info.height;
 
-#if 1
   /* special method to avoid flickering interference with BackToFront() */
-  BlitBitmap(backbuffer, screen_info.save_buffer, dest_x-pad_x, dest_y-pad_y,
-            width+2*pad_x, height+2*pad_y, buf_x, buf_y);
-  SetClipOrigin(toon_bitmap, toon_clip_gc, dest_x-src_x, dest_y-src_y);
-  BlitBitmapMasked(toon_bitmap, backbuffer,
-                  src_x, src_y, width, height, dest_x, dest_y);
-  BlitBitmap(backbuffer, window, dest_x-pad_x, dest_y-pad_y,
-            width+2*pad_x, height+2*pad_y, dest_x-pad_x, dest_y-pad_y);
+  BlitBitmap(backbuffer, screen_info.save_buffer, pad_dest_x, pad_dest_y,
+            pad_width, pad_height, buffer_x, buffer_y);
+  SetClipOrigin(toon_bitmap, toon_clip_gc, dest_x - src_x, dest_y - src_y);
+  BlitBitmapMasked(toon_bitmap, backbuffer, src_x, src_y, width, height,
+                  dest_x, dest_y);
+  BlitBitmap(backbuffer, window, pad_dest_x, pad_dest_y, pad_width, pad_height,
+            pad_dest_x, pad_dest_y);
 
   screen_info.update_function();
 
-  BlitBitmap(screen_info.save_buffer, backbuffer, buf_x, buf_y,
-           width+2*pad_x, height+2*pad_y, dest_x-pad_x, dest_y-pad_y);
-#else
-  /* normal method, causing flickering interference with BackToFront() */
-  BlitBitmap(backbuffer, screen_info.save_buffer, dest_x-pad_x, dest_y-pad_y,
-            width+2*pad_x, height+2*pad_y, buf_x, buf_y);
-  SetClipOrigin(toon_bitmap,toon_clip_gc, buf_x-src_x+pad_x,buf_y-src_y+pad_y);
-  BlitBitmapMasked(toon_bitmap, screen_info.save_buffer,
-                  src_x, src_y, width, height, buf_x+pad_x, buf_y+pad_y);
-  BlitBitmap(screen_info.save_buffer, window, buf_x, buf_y,
-            width+2*pad_x, height+2*pad_y, dest_x-pad_x, dest_y-pad_y);
-#endif
+  BlitBitmap(screen_info.save_buffer, backbuffer, buffer_x, buffer_y,
+            pad_width, pad_height, pad_dest_x, pad_dest_y);
 
   FlushDisplay();
 }
 
 boolean AnimateToon(int toon_nr, boolean restart)
 {
-  static unsigned long animation_frame_counter = 0;
+  static unsigned int animation_frame_counter = 0;
   static int pos_x = 0, pos_y = 0;
   static int delta_x = 0, delta_y = 0;
   static int frame = 0;
   static boolean horiz_move, vert_move;
-  static unsigned long anim_delay = 0;
-  static unsigned long anim_delay_value = 0;
+  static unsigned int anim_delay = 0;
+  static unsigned int anim_delay_value = 0;
   static int width,height;
   static int pad_x,pad_y;
   static int cut_x,cut_y;
@@ -154,11 +182,12 @@ boolean AnimateToon(int toon_nr, boolean restart)
   struct ToonInfo *anim = &screen_info.toons[toon_nr];
   Bitmap *anim_bitmap = screen_info.toons[toon_nr].bitmap;
   GC anim_clip_gc = anim_bitmap->stored_clip_gc;
+  int direction = get_toon_direction(anim->direction);
 
   if (restart)
   {
-    horiz_move = (anim->direction & (ANIMDIR_LEFT | ANIMDIR_RIGHT));
-    vert_move = (anim->direction & (ANIMDIR_UP | ANIMDIR_DOWN));
+    horiz_move = (direction & (MV_LEFT | MV_RIGHT));
+    vert_move = (direction & (MV_UP | MV_DOWN));
     anim_delay_value = anim->step_delay * screen_info.frame_delay_value;
 
     frame = getAnimationFrame(anim->anim_frames, anim->anim_delay,
@@ -167,16 +196,20 @@ boolean AnimateToon(int toon_nr, boolean restart)
 
     if (horiz_move)
     {
-      if (anim->position == ANIMPOS_UP)
+      int pos_bottom = screen_info.height - anim->height;
+
+      if (strEqual(anim->position, "top"))
        pos_y = 0;
-      else if (anim->position == ANIMPOS_DOWN)
-       pos_y = screen_info.height - anim->height;
-      else if (anim->position == ANIMPOS_UPPER)
-       pos_y = SimpleRND((screen_info.height - anim->height) / 2);
+      else if (strEqual(anim->position, "bottom"))
+       pos_y = pos_bottom;
+      else if (strEqual(anim->position, "upper"))
+       pos_y = GetSimpleRandom(pos_bottom / 2);
+      else if (strEqual(anim->position, "lower"))
+       pos_y = pos_bottom / 2 + GetSimpleRandom(pos_bottom / 2);
       else
-       pos_y = SimpleRND(screen_info.height - anim->height);
+       pos_y = GetSimpleRandom(pos_bottom);
 
-      if (anim->direction == ANIMDIR_RIGHT)
+      if (direction == MV_RIGHT)
       {
        delta_x = anim->step_offset;
        pos_x = -anim->width + delta_x;
@@ -186,18 +219,21 @@ boolean AnimateToon(int toon_nr, boolean restart)
        delta_x = -anim->step_offset;
        pos_x = screen_info.width + delta_x;
       }
+
       delta_y = 0;
     }
     else
     {
-      if (anim->position == ANIMPOS_LEFT)
+      int pos_right = screen_info.width - anim->width;
+
+      if (strEqual(anim->position, "left"))
        pos_x = 0;
-      else if (anim->position == ANIMPOS_RIGHT)
-       pos_x = screen_info.width - anim->width;
+      else if (strEqual(anim->position, "right"))
+       pos_x = pos_right;
       else
-       pos_x = SimpleRND(screen_info.width - anim->width);
+       pos_x = GetSimpleRandom(pos_right);
 
-      if (anim->direction == ANIMDIR_DOWN)
+      if (direction == MV_DOWN)
       {
        delta_y = anim->step_offset;
        pos_y = -anim->height + delta_y;
@@ -205,8 +241,9 @@ boolean AnimateToon(int toon_nr, boolean restart)
       else
       {
        delta_y = -anim->step_offset;
-       pos_y = screen_info.width + delta_y;
+       pos_y = screen_info.height + delta_y;
       }
+
       delta_x = 0;
     }
   }
@@ -286,36 +323,46 @@ boolean AnimateToon(int toon_nr, boolean restart)
 
 void HandleAnimation(int mode)
 {
-  static unsigned long animstart_delay = -1;
-  static unsigned long animstart_delay_value = 0;
+  static unsigned int animstart_delay = -1;
+  static unsigned int animstart_delay_value = 0;
+  static boolean anim_running = FALSE;
   static boolean anim_restart = TRUE;
   static boolean reset_delay = TRUE;
   static int toon_nr = 0;
-  int draw_mode;
 
-  if (!setup.toons)
+  if (!setup.toons || screen_info.num_toons == 0)
     return;
 
+  /* this may happen after reloading graphics and redefining "num_toons" */
+  if (toon_nr >= screen_info.num_toons)
+    anim_restart = TRUE;
+
   switch(mode)
   {
     case ANIM_START:
       screen_info.prepare_backbuffer_function();
+
+      anim_running = TRUE;
       anim_restart = TRUE;
       reset_delay = TRUE;
 
       return;
 
     case ANIM_CONTINUE:
+      if (!anim_running)
+       return;
+
       break;
 
     case ANIM_STOP:
-      redraw_mask |= (REDRAW_FIELD | REDRAW_FROM_BACKBUFFER);
+      if (anim_running)
+      {
+       redraw_mask |= (REDRAW_FIELD | REDRAW_FROM_BACKBUFFER);
 
-      /* Redraw background even when in direct drawing mode */
-      draw_mode = setup.direct_draw;
-      setup.direct_draw = FALSE;
-      screen_info.update_function();
-      setup.direct_draw = draw_mode;
+       screen_info.update_function();
+
+       anim_running = FALSE;
+      }
 
       return;
 
@@ -326,7 +373,7 @@ void HandleAnimation(int mode)
   if (reset_delay)
   {
     animstart_delay = Counter();
-    animstart_delay_value = SimpleRND(3000);
+    animstart_delay_value = GetSimpleRandom(3000);
     reset_delay = FALSE;
   }
 
@@ -335,10 +382,10 @@ void HandleAnimation(int mode)
     if (!DelayReached(&animstart_delay, animstart_delay_value))
       return;
 
-    toon_nr = SimpleRND(screen_info.num_toons);
+    toon_nr = GetSimpleRandom(screen_info.num_toons);
   }
 
-  anim_restart = reset_delay = AnimateToon(toon_nr,anim_restart);
+  anim_restart = reset_delay = AnimateToon(toon_nr, anim_restart);
 }
 
 void InitAnimation()