-/***********************************************************
-* 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"
-/* values for toon animation */
-#define ANIM_START 0
-#define ANIM_CONTINUE 1
-#define ANIM_STOP 2
+/* ========================================================================= */
+/* generic animation frame calculation */
+/* ========================================================================= */
-
-static struct ToonScreenInfo screen_info;
-
-void InitToonScreen(Bitmap **toon_bitmap_array,
- Bitmap *save_buffer,
- void (*update_function)(void),
- void (*prepare_backbuffer_function)(void),
- boolean (*redraw_needed_function)(void),
- struct ToonInfo *toons, int num_toons,
- int startx, int starty,
- int width, int height)
-{
- screen_info.toon_bitmap_array = toon_bitmap_array;
- screen_info.save_buffer = save_buffer;
- screen_info.update_function = update_function;
- screen_info.prepare_backbuffer_function = prepare_backbuffer_function;
- screen_info.redraw_needed_function = redraw_needed_function;
- screen_info.toons = toons;
- screen_info.num_toons = num_toons;
- screen_info.startx = startx;
- screen_info.starty = starty;
- screen_info.width = width;
- screen_info.height = height;
-}
-
-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;
-
-#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);
-
- 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
-
- FlushDisplay();
-}
-
-boolean AnimateToon(int toon_nr, boolean restart)
+int getAnimationFrame(int num_frames, int delay, int mode, int start_frame,
+ int sync_frame)
{
- static int pos_x = 0, pos_y = 0;
- static int delta_x = 0, delta_y = 0;
- static int frame = 0, frame_step = 1;
- static boolean horiz_move, vert_move;
- static unsigned long anim_delay = 0;
- static unsigned long anim_delay_value = 0;
- static int width,height;
- static int pad_x,pad_y;
- static int cut_x,cut_y;
- static int src_x, src_y;
- static int dest_x, dest_y;
+ int frame = 0;
- struct ToonInfo *anim = &screen_info.toons[toon_nr];
- int bitmap_nr = screen_info.toons[toon_nr].bitmap_nr;
- Bitmap *anim_bitmap = screen_info.toon_bitmap_array[bitmap_nr];
- GC anim_clip_gc = anim_bitmap->stored_clip_gc;
+ sync_frame += start_frame * delay;
- if (restart)
+ if (mode & ANIM_LOOP) /* looping animation */
{
- horiz_move = (anim->direction & (ANIMDIR_LEFT | ANIMDIR_RIGHT));
- vert_move = (anim->direction & (ANIMDIR_UP | ANIMDIR_DOWN));
- anim_delay_value = 1000/anim->frames_per_second;
- frame = 0;
-
- if (horiz_move)
- {
- if (anim->position == ANIMPOS_UP)
- 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
- pos_y = SimpleRND(screen_info.height - anim->height);
-
- if (anim->direction == ANIMDIR_RIGHT)
- {
- delta_x = anim->stepsize;
- pos_x = -anim->width + delta_x;
- }
- else
- {
- delta_x = -anim->stepsize;
- pos_x = screen_info.width + delta_x;
- }
- delta_y = 0;
- }
- else
- {
- if (anim->position == ANIMPOS_LEFT)
- pos_x = 0;
- else if (anim->position == ANIMPOS_RIGHT)
- pos_x = screen_info.width - anim->width;
- else
- pos_x = SimpleRND(screen_info.width - anim->width);
-
- if (anim->direction == ANIMDIR_DOWN)
- {
- delta_y = anim->stepsize;
- pos_y = -anim->height + delta_y;
- }
- else
- {
- delta_y = -anim->stepsize;
- pos_y = screen_info.width + delta_y;
- }
- delta_x = 0;
- }
+ frame = (sync_frame % (delay * num_frames)) / delay;
}
-
- 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)
- return TRUE;
-
- if (!DelayReached(&anim_delay, anim_delay_value))
+ else if (mode & ANIM_LINEAR) /* linear (non-looping) animation */
{
- if (screen_info.redraw_needed_function() && !restart)
- DrawAnim(anim_bitmap, anim_clip_gc,
- src_x + cut_x, src_y + cut_y,
- width, height,
- screen_info.startx + dest_x,
- screen_info.starty + dest_y,
- pad_x, pad_y);
+ frame = sync_frame / delay;
- return FALSE;
+ if (frame > num_frames - 1)
+ frame = num_frames - 1;
}
-
- if (pos_x < -anim->width)
- pos_x = -anim->width;
- else if (pos_x > screen_info.width)
- pos_x = screen_info.width;
- if (pos_y < -anim->height)
- pos_y = -anim->height;
- 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);
- src_x = anim->src_x + frame * anim->width;
- src_y = anim->src_y;
- dest_x = pos_x;
- dest_y = pos_y;
- cut_x = cut_y = 0;
- width = anim->width;
- height = anim->height;
-
- if (pos_x<0)
+ else if (mode & ANIM_PINGPONG) /* oscillate (border frames once) */
{
- dest_x = 0;
- width += pos_x;
- cut_x = -pos_x;
- }
- else if (pos_x > screen_info.width - anim->width)
- width -= (pos_x - (screen_info.width - anim->width));
+ int max_anim_frames = (num_frames > 1 ? 2 * num_frames - 2 : 1);
- if (pos_y<0)
- {
- dest_y = 0;
- height += pos_y;
- cut_y = -pos_y;
+ frame = (sync_frame % (delay * max_anim_frames)) / delay;
+ frame = (frame < num_frames ? frame : max_anim_frames - frame);
}
- else if (pos_y > screen_info.height - anim->height)
- height -= (pos_y - (screen_info.height - anim->height));
-
- DrawAnim(anim_bitmap, anim_clip_gc,
- src_x + cut_x, src_y + cut_y,
- width, height,
- screen_info.startx + dest_x,
- screen_info.starty + dest_y,
- pad_x, pad_y);
-
- pos_x += delta_x;
- pos_y += delta_y;
- frame += frame_step;
-
- if (frame<0 || frame>=anim->frames)
+ else if (mode & ANIM_PINGPONG2) /* oscillate (border frames twice) */
{
- if (anim->mode == ANIM_PINGPONG)
- {
- frame_step *= -1;
- frame = (frame<0 ? 1 : anim->frames-2);
- }
- else
- frame = (frame<0 ? anim->frames-1 : 0);
- }
-
- return FALSE;
-}
-
-void HandleAnimation(int mode)
-{
- static unsigned long animstart_delay = -1;
- static unsigned long animstart_delay_value = 0;
- static boolean anim_restart = TRUE;
- static boolean reset_delay = TRUE;
- static int toon_nr = 0;
- int draw_mode;
-
- if (!setup.toons)
- return;
-
- switch(mode)
- {
- case ANIM_START:
- screen_info.prepare_backbuffer_function();
- anim_restart = TRUE;
- reset_delay = TRUE;
-
- return;
-
- case ANIM_CONTINUE:
- break;
-
- case ANIM_STOP:
- 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;
-
- return;
+ int max_anim_frames = 2 * num_frames;
- default:
- break;
+ frame = (sync_frame % (delay * max_anim_frames)) / delay;
+ frame = (frame < num_frames ? frame : max_anim_frames - frame - 1);
}
-
- if (reset_delay)
+ else if (mode & ANIM_RANDOM) /* play frames in random order */
{
- animstart_delay = Counter();
- animstart_delay_value = SimpleRND(3000);
- reset_delay = FALSE;
- }
+ /* note: expect different frames for the same delay cycle! */
- if (anim_restart)
+ if (gfx.anim_random_frame < 0)
+ frame = GetSimpleRandom(num_frames);
+ else
+ frame = gfx.anim_random_frame % num_frames;
+ }
+ else if (mode & (ANIM_CE_VALUE | ANIM_CE_SCORE | ANIM_CE_DELAY))
{
- if (!DelayReached(&animstart_delay, animstart_delay_value))
- return;
-
- toon_nr = SimpleRND(screen_info.num_toons);
+ frame = sync_frame % num_frames;
}
- anim_restart = reset_delay = AnimateToon(toon_nr,anim_restart);
-}
+ if (mode & ANIM_REVERSE) /* use reverse animation direction */
+ frame = num_frames - frame - 1;
-void InitAnimation()
-{
- HandleAnimation(ANIM_START);
-}
-
-void StopAnimation()
-{
- HandleAnimation(ANIM_STOP);
-}
-
-void DoAnimation()
-{
- HandleAnimation(ANIM_CONTINUE);
+ return frame;
}
projects / rocksndiamonds.git / blobdiff