23 static void FillBackground(SDL_Surface *screen)  in FillBackground()  argument
32 	if ( SDL_LockSurface(screen) < 0 ) {  in FillBackground()
37 	buffer=(Uint8 *)screen->pixels;  in FillBackground()
38 	if (screen->format->BytesPerPixel!=2) {  in FillBackground()
39 		for ( i=0; i<screen->h; ++i ) {  in FillBackground()
40 			memset(buffer,(i*255)/screen->h, screen->w*screen->format->BytesPerPixel);  in FillBackground()
41 			buffer += screen->pitch;  in FillBackground()
46 		for ( i=0; i<screen->h; ++i ) {  in FillBackground()
47 			gradient=((i*255)/screen->h);  in FillBackground()
48                         color = (Uint16)SDL_MapRGB(screen->format, gradient, gradient, gradient);  in FillBackground()
50                         for (k=0; k<screen->w; k++)  in FillBackground()
54 			buffer += screen->pitch;  in FillBackground()
58 	SDL_UnlockSurface(screen);  in FillBackground()
59 	SDL_UpdateRect(screen, 0, 0, 0, 0);  in FillBackground()
153 void FlashLight(SDL_Surface *screen, SDL_Surface *light, int x, int y)  in FlashLight()  argument
165 	SDL_BlitSurface(light, NULL, screen, &position);  in FlashLight()
167 	SDL_UpdateRects(screen, 1, &position);  in FlashLight()
181 int LoadSprite(SDL_Surface *screen, char *file)  in LoadSprite()  argument
230 	position.x = (screen->w-sprite->w)/2;  in LoadSprite()
231 	position.y = (screen->h-sprite->h)/2;  in LoadSprite()
247 void MoveSprite(SDL_Surface *screen, SDL_Surface *light)  in MoveSprite()  argument
255 		SDL_BlitSurface(backing, NULL, screen, &updates[0]);  in MoveSprite()
269 		FlashLight(screen, light, x, y);  in MoveSprite()
274 	if ( (position.x < 0) || (position.x >= screen->w) ) {  in MoveSprite()
279 	if ( (position.y < 0) || (position.y >= screen->h) ) {  in MoveSprite()
296 	SDL_BlitSurface(screen, &updates[1], backing, NULL);  in MoveSprite()
300 	SDL_BlitSurface(sprite, NULL, screen, &updates[1]);  in MoveSprite()
303 	SDL_UpdateRects(screen, 2, updates);  in MoveSprite()
306 void WarpSprite(SDL_Surface *screen, int x, int y)  in WarpSprite()  argument
312 	SDL_BlitSurface(backing, NULL, screen, &updates[0]);  in WarpSprite()
316 	SDL_BlitSurface(screen, &updates[1], backing, NULL);  in WarpSprite()
318 	SDL_BlitSurface(sprite, NULL, screen, &updates[1]);  in WarpSprite()
319 	SDL_UpdateRects(screen, 2, updates);  in WarpSprite()
325 	SDL_Surface *screen;  in main()  local
396 	if ( (screen=SDL_SetVideoMode(w,h,video_bpp,videoflags)) == NULL ) {  in main()
401 	FillBackground(screen);  in main()
410 	if ( LoadSprite(screen, "icon.bmp") < 0 ) {  in main()
416 	printf("Screen is at %d bits per pixel\n",screen->format->BitsPerPixel);  in main()
417 	if ( (screen->flags & SDL_HWSURFACE) == SDL_HWSURFACE ) {  in main()
422 	if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {  in main()
432 	MoveSprite(screen, NULL);  in main()
443 		clip.w = screen->w-(2*32);  in main()
444 		clip.h = screen->h-(2*32);  in main()
445 		SDL_SetClipRect(screen, &clip);  in main()
455 			MoveSprite(screen, light);  in main()
458 			MoveSprite(screen, NULL);  in main()
478 					screen = SDL_SetVideoMode(event.resize.w, event.resize.h, video_bpp, videoflags);  in main()
479 					if ( screen ) {  in main()
480 						FillBackground(screen);  in main()
503 						SDL_FillRect(screen, &area, 0);  in main()
504 						SDL_UpdateRects(screen,1,&area);  in main()
516 						screen = SDL_SetVideoMode(w, h, video_bpp, videoflags);  in main()
517 						if ( screen == NULL ) {  in main()
522 						FillBackground(screen);  in main()