static int draw(RGB32 *src, RGB32 *dst)
{
memcpy(dst, src, video_area * PIXEL_SIZE);
apply_lens(x,y,src,dst);
if (mode==1){
x+= xd; y+=yd;
if (x > (video_width - lens_width - 5) || x < 5) xd = -xd;
if (y > (video_height - lens_width - 5) || y < 5) yd = -yd;
}
return 0;
}
int main( int argc, char* argv[] )
{
int x = 16, y = 16;
int xd = 1, yd = 1;
if (argc > 1) {
printf("Retro Lens Effect - B. Ellacott - 2002\n");
return -1;
}
if (!TDEC_set_video(SCREEN_WIDTH, SCREEN_HEIGHT, 8, SDL_HWSURFACE | SDL_HWPALETTE /*| SDL_FULLSCREEN*/))
quit(1);
TDEC_init_timer();
SDL_WM_SetCaption("Retro - Lens - ", "");
init();
/* time based demo loop */
while( 1 ) {
TDEC_new_time();
process_events();
/* blit the whole backing image across */
SDL_UnlockSurface(screen);
SDL_BlitSurface(backing, NULL, screen, &dst);
SDL_LockSurface(screen);
/* apply the lens */
apply_lens(x, y);
/* shift the coordinates around */
x += xd; y += yd;
if (x > (SCREEN_WIDTH - LENS_WIDTH - 15) || x < 15) xd = -xd;
if (y > (SCREEN_HEIGHT - LENS_WIDTH - 15) || y < 15) yd = -yd;
/* update changed portions */
if (TDEC_fps_ok()) {
SDL_UpdateRects(screen, 1, &dst);
}
}
return 0; /* never reached */
}
