1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2000 Artsoft Entertainment *
6 * Detmolder Strasse 189 *
9 * e-mail: info@artsoft.org *
10 *----------------------------------------------------------*
12 ***********************************************************/
19 #if defined(PLATFORM_MSDOS)
28 /* ========================================================================= */
29 /* exported variables */
30 /* ========================================================================= */
32 struct ProgramInfo program;
33 struct OptionInfo options;
34 struct VideoSystemInfo video;
35 struct AudioSystemInfo audio;
38 struct LevelDirInfo *leveldir_first = NULL;
39 struct LevelDirInfo *leveldir_current = NULL;
41 Display *display = NULL;
42 Visual *visual = NULL;
46 DrawWindow *window = NULL;
47 DrawBuffer *backbuffer = NULL;
48 DrawBuffer *drawto = NULL;
50 int button_status = MB_NOT_PRESSED;
51 boolean motion_status = FALSE;
53 int redraw_mask = REDRAW_NONE;
59 /* ========================================================================= */
60 /* init/close functions */
61 /* ========================================================================= */
63 void InitCommandName(char *argv0)
65 program.command_basename =
66 (strrchr(argv0, '/') ? strrchr(argv0, '/') + 1 : argv0);
69 void InitExitFunction(void (*exit_function)(int))
71 program.exit_function = exit_function;
73 /* set signal handlers to custom exit function */
74 signal(SIGINT, exit_function);
75 signal(SIGTERM, exit_function);
77 #if defined(TARGET_SDL)
78 /* set exit function to automatically cleanup SDL stuff after exit() */
83 void InitPlatformDependantStuff(void)
85 #if defined(PLATFORM_MSDOS)
89 #if !defined(PLATFORM_UNIX)
94 void ClosePlatformDependantStuff(void)
96 #if !defined(PLATFORM_UNIX)
101 void InitProgramInfo(char *unix_userdata_directory, char *program_title,
102 char *window_title, char *icon_title,
103 char *x11_icon_basename, char *x11_iconmask_basename,
104 char *msdos_pointer_basename)
106 char *gfx_dir = getPath2(options.ro_base_directory, GRAPHICS_DIRECTORY);
107 char *x11_icon_filename = getPath2(gfx_dir, x11_icon_basename);
108 char *x11_iconmask_filename = getPath2(gfx_dir, x11_iconmask_basename);
109 char *msdos_pointer_filename = getPath2(gfx_dir, msdos_pointer_basename);
113 #if defined(PLATFORM_UNIX)
114 program.userdata_directory = unix_userdata_directory;
116 program.userdata_directory = "userdata";
119 program.program_title = program_title;
120 program.window_title = window_title;
121 program.icon_title = icon_title;
122 program.x11_icon_filename = x11_icon_filename;
123 program.x11_iconmask_filename = x11_iconmask_filename;
124 program.msdos_pointer_filename = msdos_pointer_filename;
127 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
128 int real_sx, int real_sy,
129 int full_sxsize, int full_sysize)
135 gfx.real_sx = real_sx;
136 gfx.real_sy = real_sy;
137 gfx.full_sxsize = full_sxsize;
138 gfx.full_sysize = full_sysize;
141 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
149 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
157 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
159 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
160 gfx.scrollbuffer_width = scrollbuffer_width;
161 gfx.scrollbuffer_height = scrollbuffer_height;
165 /* ========================================================================= */
166 /* video functions */
167 /* ========================================================================= */
169 inline static int GetRealDepth(int depth)
171 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
174 inline void InitVideoDisplay(void)
177 SDLInitVideoDisplay();
179 X11InitVideoDisplay();
183 inline void CloseVideoDisplay(void)
185 #if defined(TARGET_X11)
187 XCloseDisplay(display);
191 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
192 int width, int height, int depth,
196 video.height = height;
197 video.depth = GetRealDepth(depth);
198 video.fullscreen_available = FULLSCREEN_STATUS;
199 video.fullscreen_enabled = FALSE;
202 SDLInitVideoBuffer(backbuffer, window, fullscreen);
204 X11InitVideoBuffer(backbuffer, window);
208 inline Bitmap *CreateBitmapStruct(void)
211 return checked_calloc(sizeof(struct SDLSurfaceInfo));
213 return checked_calloc(sizeof(struct X11DrawableInfo));
217 inline Bitmap *CreateBitmap(int width, int height, int depth)
219 Bitmap *new_bitmap = CreateBitmapStruct();
220 int real_depth = GetRealDepth(depth);
223 SDL_Surface *surface_tmp, *surface_native;
225 if ((surface_tmp = SDL_CreateRGBSurface(SURFACE_FLAGS, width, height,
226 real_depth, 0, 0, 0, 0))
228 Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
230 if ((surface_native = SDL_DisplayFormat(surface_tmp)) == NULL)
231 Error(ERR_EXIT, "SDL_DisplayFormat() failed: %s", SDL_GetError());
233 SDL_FreeSurface(surface_tmp);
235 new_bitmap->surface = surface_native;
239 if ((pixmap = XCreatePixmap(display, window->drawable,
240 width, height, real_depth))
242 Error(ERR_EXIT, "cannot create pixmap");
244 new_bitmap->drawable = pixmap;
247 Error(ERR_EXIT, "Window GC needed for Bitmap -- create Window first");
249 new_bitmap->gc = window->gc;
251 new_bitmap->line_gc[0] = window->line_gc[0];
252 new_bitmap->line_gc[1] = window->line_gc[1];
258 inline void FreeBitmap(Bitmap *bitmap)
265 SDL_FreeSurface(bitmap->surface);
266 if (bitmap->surface_masked)
267 SDL_FreeSurface(bitmap->surface_masked);
269 if (bitmap->drawable)
270 XFreePixmap(display, bitmap->drawable);
271 if (bitmap->clip_mask)
272 XFreePixmap(display, bitmap->clip_mask);
273 if (bitmap->stored_clip_gc)
274 XFreeGC(display, bitmap->stored_clip_gc);
280 inline void CloseWindow(DrawWindow *window)
283 if (window->drawable)
285 XUnmapWindow(display, window->drawable);
286 XDestroyWindow(display, window->drawable);
289 XFreeGC(display, window->gc);
293 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
294 int src_x, int src_y,
295 int width, int height,
296 int dst_x, int dst_y)
299 SDLCopyArea(src_bitmap, dst_bitmap,
300 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_OPAQUE);
302 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
303 dst_bitmap->gc, src_x, src_y, width, height, dst_x, dst_y);
307 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
310 SDLFillRectangle(bitmap, x, y, width, height, 0x000000);
312 XFillRectangle(display, bitmap->drawable, bitmap->gc, x, y, width, height);
318 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
322 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
327 bitmap->clip_gc = clip_gc;
328 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
331 last_clip_gc = clip_gc;
336 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
341 bitmap->clip_gc = clip_gc;
342 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
345 last_clip_gc = clip_gc;
350 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
351 int src_x, int src_y,
352 int width, int height,
353 int dst_x, int dst_y)
356 SDLCopyArea(src_bitmap, dst_bitmap,
357 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_MASKED);
359 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
360 src_bitmap->clip_gc, src_x, src_y, width, height, dst_x, dst_y);
364 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
368 SDLDrawSimpleLine(bitmap->surface, from_x, from_y, to_x, to_y, 0xffffff);
370 XSetForeground(display, bitmap->gc, WhitePixel(display, screen));
371 XDrawLine(display, bitmap->drawable, bitmap->gc, from_x, from_y, to_x, to_y);
372 XSetForeground(display, bitmap->gc, BlackPixel(display, screen));
376 #if !defined(TARGET_X11_NATIVE)
377 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
378 int to_x, int to_y, Pixel pixel, int line_width)
382 for (x=0; x<line_width; x++)
384 for (y=0; y<line_width; y++)
386 int dx = x - line_width / 2;
387 int dy = y - line_width / 2;
389 if ((x == 0 && y == 0) ||
390 (x == 0 && y == line_width - 1) ||
391 (x == line_width - 1 && y == 0) ||
392 (x == line_width - 1 && y == line_width - 1))
395 #if defined(TARGET_SDL)
396 sge_Line(bitmap->surface,
397 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
398 #elif defined(TARGET_ALLEGRO)
399 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
400 to_x + dx, to_y + dy, pixel);
407 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
410 #if !defined(TARGET_X11_NATIVE)
414 for (i=0; i<num_points - 1; i++)
415 DrawLine(bitmap, points[i].x, points[i].y,
416 points[i + 1].x, points[i + 1].y, pixel, line_width);
419 SDLDrawLines(bitmap->surface, points, num_points, pixel);
422 XSetForeground(display, bitmap->line_gc[1], pixel);
423 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
424 (XPoint *)points, num_points, CoordModeOrigin);
426 XSetForeground(display, gc, BlackPixel(display, screen));
431 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
432 unsigned int color_g, unsigned int color_b)
436 #if defined(TARGET_SDL)
437 pixel = SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
438 #elif defined(TARGET_X11_NATIVE)
441 xcolor.flags = DoRed | DoGreen | DoBlue;
442 xcolor.red = (color_r << 8);
443 xcolor.green = (color_g << 8);
444 xcolor.blue = (color_b << 8);
445 XAllocColor(display, cmap, &xcolor);
446 pixel = xcolor.pixel;
452 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
454 unsigned int color_r = (color >> 16) & 0xff;
455 unsigned int color_g = (color >> 8) & 0xff;
456 unsigned int color_b = (color >> 0) & 0xff;
458 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
461 /* execute all pending screen drawing operations */
462 inline void FlushDisplay(void)
469 /* execute and wait for all pending screen drawing operations */
470 inline void SyncDisplay(void)
473 XSync(display, FALSE);
477 inline void KeyboardAutoRepeatOn(void)
480 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
481 SDL_DEFAULT_REPEAT_INTERVAL / 2);
482 SDL_EnableUNICODE(1);
485 XAutoRepeatOn(display);
489 inline void KeyboardAutoRepeatOff(void)
492 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
493 SDL_EnableUNICODE(0);
496 XAutoRepeatOff(display);
500 inline boolean PointerInWindow(DrawWindow *window)
510 /* if XQueryPointer() returns False, the pointer
511 is not on the same screen as the specified window */
512 return XQueryPointer(display, window->drawable, &root, &child,
513 &root_x, &root_y, &win_x, &win_y, &mask);
517 inline boolean SetVideoMode(boolean fullscreen)
520 return SDLSetVideoMode(&backbuffer, fullscreen);
522 boolean success = TRUE;
524 if (fullscreen && video.fullscreen_available)
526 Error(ERR_WARN, "fullscreen not available in X11 version");
528 /* display error message only once */
529 video.fullscreen_available = FALSE;
538 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
541 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
542 (!fullscreen && video.fullscreen_enabled))
543 fullscreen = SetVideoMode(fullscreen);
549 Bitmap *LoadImage(char *basename)
554 sprintf(filename, "%s/%s/%s",
555 options.ro_base_directory, GRAPHICS_DIRECTORY, basename);
557 #if defined(TARGET_SDL)
558 new_bitmap = SDLLoadImage(filename);
560 new_bitmap = X11LoadImage(filename);
567 /* ========================================================================= */
568 /* audio functions */
569 /* ========================================================================= */
571 inline boolean OpenAudio(struct AudioSystemInfo *audio)
573 audio->sound_available = FALSE;
574 audio->loops_available = FALSE;
575 audio->sound_enabled = FALSE;
576 audio->soundserver_pipe[0] = audio->soundserver_pipe[1] = 0;
577 audio->soundserver_pid = 0;
578 audio->device_name = NULL;
579 audio->device_fd = 0;
581 #if defined(TARGET_SDL)
584 audio->sound_available = TRUE;
585 audio->loops_available = TRUE;
586 audio->sound_enabled = TRUE;
588 #elif defined(PLATFORM_MSDOS)
589 if (MSDOSOpenAudio())
591 audio->sound_available = TRUE;
592 audio->loops_available = TRUE;
593 audio->sound_enabled = TRUE;
595 #elif defined(PLATFORM_UNIX)
596 UnixOpenAudio(audio);
599 return audio->sound_available;
602 inline void CloseAudio(struct AudioSystemInfo *audio)
604 #if defined(TARGET_SDL)
606 #elif defined(PLATFORM_MSDOS)
608 #elif defined(PLATFORM_UNIX)
609 UnixCloseAudio(audio);
612 audio->sound_available = FALSE;
613 audio->loops_available = FALSE;
614 audio->sound_enabled = FALSE;
617 inline void SetAudioMode(boolean enabled)
619 if (!audio.sound_available)
622 audio.sound_enabled = enabled;
626 /* ========================================================================= */
627 /* event functions */
628 /* ========================================================================= */
630 inline void InitEventFilter(EventFilter filter_function)
633 /* set event filter to filter out certain events */
634 SDL_SetEventFilter(filter_function);
638 inline boolean PendingEvent(void)
641 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
643 return (XPending(display) ? TRUE : FALSE);
647 inline void NextEvent(Event *event)
650 SDL_WaitEvent(event);
652 XNextEvent(display, event);
656 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
660 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
661 (int)event->keysym.unicode,
662 (int)event->keysym.sym,
663 (int)SDL_GetModState());
666 if (with_modifiers && event->keysym.unicode != 0)
667 return event->keysym.unicode;
669 return event->keysym.sym;
672 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
673 (int)XLookupKeysym(event, event->state),
674 (int)XLookupKeysym(event, 0));
678 return XLookupKeysym(event, event->state);
680 return XLookupKeysym(event, 0);
684 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
686 if (event->type != EVENT_CLIENTMESSAGE)
689 #if defined(TARGET_SDL)
690 return TRUE; /* the only possible message here is SDL_QUIT */
691 #elif defined(PLATFORM_UNIX)
692 if ((event->window == window->drawable) &&
693 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
701 inline void dummy(void)