+++ /dev/null
-/***********************************************************
-* Rocks'n'Diamonds -- McDuffin Strikes Back! *
-*----------------------------------------------------------*
-* ©1995 Artsoft Development *
-* Holger Schemel *
-* 33659 Bielefeld-Senne *
-* Telefon: (0521) 493245 *
-* eMail: aeglos@valinor.owl.de *
-* aeglos@uni-paderborn.de *
-* q99492@pbhrzx.uni-paderborn.de *
-*----------------------------------------------------------*
-* sdl.c *
-***********************************************************/
-
-#ifdef TARGET_SDL
-
-#include "main.h"
-#include "misc.h"
-
-inline void SDLInitBufferedDisplay(DrawBuffer *backbuffer, DrawWindow *window)
-{
- /* initialize SDL video */
- if (SDL_Init(SDL_INIT_VIDEO) < 0)
- Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
-
- /* automatically cleanup SDL stuff after exit() */
- atexit(SDL_Quit);
-
- /* open SDL video output device (window or fullscreen mode) */
- if (!SDLSetVideoMode(backbuffer))
- Error(ERR_EXIT, "setting video mode failed");
-
- /* set window and icon title */
- SDL_WM_SetCaption(WINDOW_TITLE_STRING, WINDOW_TITLE_STRING);
-
- /* create additional buffer for double-buffering */
- pix[PIX_DB_BACK] = CreateBitmap(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH);
-
- /* SDL cannot directly draw to the visible video framebuffer like X11,
- but always uses a backbuffer, which is then blitted to the visible
- video framebuffer with 'SDL_UpdateRect' (or replaced with the current
- visible video framebuffer with 'SDL_Flip', if the hardware supports
- this). Therefore do not use an additional backbuffer for drawing, but
- use a symbolic buffer (distinguishable from the SDL backbuffer) called
- 'window', which indicates that the SDL backbuffer should be updated to
- the visible video framebuffer when attempting to blit to it.
-
- For convenience, it seems to be a good idea to create this symbolic
- buffer 'window' at the same size as the SDL backbuffer. Although it
- should never be drawn to directly, it would do no harm nevertheless. */
-
- *window = pix[PIX_DB_BACK]; /* 'window' is only symbolic buffer */
- pix[PIX_DB_BACK] = *backbuffer; /* 'backbuffer' is SDL screen buffer */
-}
-
-inline boolean SDLSetVideoMode(DrawBuffer *backbuffer)
-{
- boolean success = TRUE;
-
- if (setup.fullscreen && !fullscreen_enabled && fullscreen_available)
- {
- /* switch display to fullscreen mode, if available */
- DrawWindow window_old = *backbuffer;
- DrawWindow window_new;
-
- if ((window_new = SDL_SetVideoMode(WIN_XSIZE, WIN_YSIZE, WIN_SDL_DEPTH,
- SDL_HWSURFACE|SDL_FULLSCREEN))
- == NULL)
- {
- /* switching display to fullscreen mode failed */
- Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
-
- /* do not try it again */
- fullscreen_available = FALSE;
- success = FALSE;
- }
- else
- {
- if (window_old)
- SDL_FreeSurface(window_old);
- *backbuffer = window_new;
-
- fullscreen_enabled = TRUE;
- success = TRUE;
- }
- }
-
- if ((!setup.fullscreen && fullscreen_enabled) || !*backbuffer)
- {
- /* switch display to window mode */
- DrawWindow window_old = *backbuffer;
- DrawWindow window_new;
-
- if ((window_new = SDL_SetVideoMode(WIN_XSIZE, WIN_YSIZE, WIN_SDL_DEPTH,
- SDL_HWSURFACE))
- == NULL)
- {
- /* switching display to window mode failed -- should not happen */
- Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
-
- success = FALSE;
- }
- else
- {
- if (window_old)
- SDL_FreeSurface(window_old);
- *backbuffer = window_new;
-
- fullscreen_enabled = FALSE;
- success = TRUE;
- }
- }
-
- return success;
-}
-
-inline void SDLCopyArea(SDL_Surface *src_surface, SDL_Surface *dst_surface,
- int src_x, int src_y,
- int width, int height,
- int dst_x, int dst_y)
-{
- SDL_Surface *surface = (dst_surface == window ? backbuffer : dst_surface);
- SDL_Rect src_rect, dst_rect;
-
- src_rect.x = src_x;
- src_rect.y = src_y;
- src_rect.w = width;
- src_rect.h = height;
-
- dst_rect.x = dst_x;
- dst_rect.y = dst_y;
- dst_rect.w = width;
- dst_rect.h = height;
-
- if (src_surface != backbuffer || dst_surface != window)
- SDL_BlitSurface(src_surface, &src_rect, surface, &dst_rect);
-
- if (dst_surface == window)
- SDL_UpdateRect(backbuffer, dst_x, dst_y, width, height);
-}
-
-inline void SDLFillRectangle(SDL_Surface *dst_surface, int x, int y,
- int width, int height, unsigned int color)
-{
- SDL_Surface *surface = (dst_surface == window ? backbuffer : dst_surface);
- SDL_Rect rect;
- unsigned int color_r = (color >> 16) && 0xff;
- unsigned int color_g = (color >> 8) && 0xff;
- unsigned int color_b = (color >> 0) && 0xff;
-
- rect.x = x;
- rect.y = y;
- rect.w = width;
- rect.h = height;
-
- SDL_FillRect(surface, &rect,
- SDL_MapRGB(surface->format, color_r, color_g, color_b));
-
- if (dst_surface == window)
- SDL_UpdateRect(backbuffer, x, y, width, height);
-}
-
-inline void SDLDrawSimpleLine(SDL_Surface *surface, int from_x, int from_y,
- int to_x, int to_y, unsigned int color)
-{
- SDL_Rect rect;
- unsigned int color_r = (color >> 16) & 0xff;
- unsigned int color_g = (color >> 8) & 0xff;
- unsigned int color_b = (color >> 0) & 0xff;
-
- if (from_x > to_x)
- swap_numbers(&from_x, &to_x);
-
- if (from_y > to_y)
- swap_numbers(&from_y, &to_y);
-
- rect.x = from_x;
- rect.y = from_y;
- rect.w = (to_x - from_x + 1);
- rect.h = (to_y - from_y + 1);
-
- SDL_FillRect(surface, &rect,
- SDL_MapRGB(surface->format, color_r, color_g, color_b));
-}
-
-inline boolean SDLOpenAudio(void)
-{
- if (SDL_Init(SDL_INIT_AUDIO) < 0)
- {
- Error(ERR_WARN, "SDL_Init() failed: %s", SDL_GetError());
- return FALSE;
- }
-
- if (Mix_OpenAudio(22050, AUDIO_S16, 2, 512) < 0)
- {
- Error(ERR_WARN, "Mix_OpenAudio() failed: %s", SDL_GetError());
- return FALSE;
- }
-
- Mix_Volume(-1, SDL_MIX_MAXVOLUME / 4);
- Mix_VolumeMusic(SDL_MIX_MAXVOLUME / 4);
-
- return TRUE;
-}
-
-inline void SDLCloseAudio(void)
-{
- Mix_HaltMusic();
- Mix_HaltChannel(-1);
-
- Mix_CloseAudio();
-}
-
-#endif /* TARGET_SDL */
projects / rocksndiamonds.git / blobdiff