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)
90 program.userdata_directory = "userdata";
94 #if defined(TARGET_SDL)
95 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
96 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
100 void ClosePlatformDependantStuff(void)
102 #if !defined(PLATFORM_UNIX)
107 void InitProgramInfo(char *unix_userdata_directory, char *program_title,
108 char *window_title, char *icon_title,
109 char *x11_icon_basename, char *x11_iconmask_basename,
110 char *msdos_pointer_basename)
112 char *gfx_dir = getPath2(options.ro_base_directory, GRAPHICS_DIRECTORY);
113 char *x11_icon_filename = getPath2(gfx_dir, x11_icon_basename);
114 char *x11_iconmask_filename = getPath2(gfx_dir, x11_iconmask_basename);
115 char *msdos_pointer_filename = getPath2(gfx_dir, msdos_pointer_basename);
119 #if defined(PLATFORM_UNIX)
120 program.userdata_directory = unix_userdata_directory;
122 program.userdata_directory = "userdata";
125 program.program_title = program_title;
126 program.window_title = window_title;
127 program.icon_title = icon_title;
128 program.x11_icon_filename = x11_icon_filename;
129 program.x11_iconmask_filename = x11_iconmask_filename;
130 program.msdos_pointer_filename = msdos_pointer_filename;
133 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
134 int real_sx, int real_sy,
135 int full_sxsize, int full_sysize)
141 gfx.real_sx = real_sx;
142 gfx.real_sy = real_sy;
143 gfx.full_sxsize = full_sxsize;
144 gfx.full_sysize = full_sysize;
147 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
155 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
163 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
165 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
166 gfx.scrollbuffer_width = scrollbuffer_width;
167 gfx.scrollbuffer_height = scrollbuffer_height;
171 /* ========================================================================= */
172 /* video functions */
173 /* ========================================================================= */
175 inline static int GetRealDepth(int depth)
177 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
180 inline void InitVideoDisplay(void)
183 SDLInitVideoDisplay();
185 X11InitVideoDisplay();
189 inline void CloseVideoDisplay(void)
191 #if defined(TARGET_X11)
193 XCloseDisplay(display);
197 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
198 int width, int height, int depth,
202 video.height = height;
203 video.depth = GetRealDepth(depth);
204 video.fullscreen_available = FULLSCREEN_STATUS;
205 video.fullscreen_enabled = FALSE;
208 SDLInitVideoBuffer(backbuffer, window, fullscreen);
210 X11InitVideoBuffer(backbuffer, window);
214 inline Bitmap *CreateBitmapStruct(void)
217 return checked_calloc(sizeof(struct SDLSurfaceInfo));
219 return checked_calloc(sizeof(struct X11DrawableInfo));
223 inline Bitmap *CreateBitmap(int width, int height, int depth)
225 Bitmap *new_bitmap = CreateBitmapStruct();
226 int real_depth = GetRealDepth(depth);
229 SDL_Surface *surface_tmp, *surface_native;
231 if ((surface_tmp = SDL_CreateRGBSurface(SURFACE_FLAGS, width, height,
232 real_depth, 0, 0, 0, 0))
234 Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
236 if ((surface_native = SDL_DisplayFormat(surface_tmp)) == NULL)
237 Error(ERR_EXIT, "SDL_DisplayFormat() failed: %s", SDL_GetError());
239 SDL_FreeSurface(surface_tmp);
241 new_bitmap->surface = surface_native;
245 if ((pixmap = XCreatePixmap(display, window->drawable,
246 width, height, real_depth))
248 Error(ERR_EXIT, "cannot create pixmap");
250 new_bitmap->drawable = pixmap;
253 Error(ERR_EXIT, "Window GC needed for Bitmap -- create Window first");
255 new_bitmap->gc = window->gc;
257 new_bitmap->line_gc[0] = window->line_gc[0];
258 new_bitmap->line_gc[1] = window->line_gc[1];
264 inline void FreeBitmap(Bitmap *bitmap)
271 SDL_FreeSurface(bitmap->surface);
272 if (bitmap->surface_masked)
273 SDL_FreeSurface(bitmap->surface_masked);
275 if (bitmap->drawable)
276 XFreePixmap(display, bitmap->drawable);
277 if (bitmap->clip_mask)
278 XFreePixmap(display, bitmap->clip_mask);
279 if (bitmap->stored_clip_gc)
280 XFreeGC(display, bitmap->stored_clip_gc);
286 inline void CloseWindow(DrawWindow *window)
289 if (window->drawable)
291 XUnmapWindow(display, window->drawable);
292 XDestroyWindow(display, window->drawable);
295 XFreeGC(display, window->gc);
299 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
300 int src_x, int src_y,
301 int width, int height,
302 int dst_x, int dst_y)
305 SDLCopyArea(src_bitmap, dst_bitmap,
306 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_OPAQUE);
308 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
309 dst_bitmap->gc, src_x, src_y, width, height, dst_x, dst_y);
313 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
316 SDLFillRectangle(bitmap, x, y, width, height, 0x000000);
318 XFillRectangle(display, bitmap->drawable, bitmap->gc, x, y, width, height);
324 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
328 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
333 bitmap->clip_gc = clip_gc;
334 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
337 last_clip_gc = clip_gc;
342 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
347 bitmap->clip_gc = clip_gc;
348 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
351 last_clip_gc = clip_gc;
356 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
357 int src_x, int src_y,
358 int width, int height,
359 int dst_x, int dst_y)
362 SDLCopyArea(src_bitmap, dst_bitmap,
363 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_MASKED);
365 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
366 src_bitmap->clip_gc, src_x, src_y, width, height, dst_x, dst_y);
370 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
374 SDLDrawSimpleLine(bitmap->surface, from_x, from_y, to_x, to_y, 0xffffff);
376 XSetForeground(display, bitmap->gc, WhitePixel(display, screen));
377 XDrawLine(display, bitmap->drawable, bitmap->gc, from_x, from_y, to_x, to_y);
378 XSetForeground(display, bitmap->gc, BlackPixel(display, screen));
382 #if !defined(TARGET_X11_NATIVE)
383 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
384 int to_x, int to_y, Pixel pixel, int line_width)
388 for (x=0; x<line_width; x++)
390 for (y=0; y<line_width; y++)
392 int dx = x - line_width / 2;
393 int dy = y - line_width / 2;
395 if ((x == 0 && y == 0) ||
396 (x == 0 && y == line_width - 1) ||
397 (x == line_width - 1 && y == 0) ||
398 (x == line_width - 1 && y == line_width - 1))
401 #if defined(TARGET_SDL)
402 sge_Line(bitmap->surface,
403 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
404 #elif defined(TARGET_ALLEGRO)
405 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
406 to_x + dx, to_y + dy, pixel);
413 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
416 #if !defined(TARGET_X11_NATIVE)
420 for (i=0; i<num_points - 1; i++)
421 DrawLine(bitmap, points[i].x, points[i].y,
422 points[i + 1].x, points[i + 1].y, pixel, line_width);
425 SDLDrawLines(bitmap->surface, points, num_points, pixel);
428 XSetForeground(display, bitmap->line_gc[1], pixel);
429 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
430 (XPoint *)points, num_points, CoordModeOrigin);
432 XSetForeground(display, gc, BlackPixel(display, screen));
437 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
438 unsigned int color_g, unsigned int color_b)
442 #if defined(TARGET_SDL)
443 pixel = SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
444 #elif defined(TARGET_X11_NATIVE)
447 xcolor.flags = DoRed | DoGreen | DoBlue;
448 xcolor.red = (color_r << 8);
449 xcolor.green = (color_g << 8);
450 xcolor.blue = (color_b << 8);
451 XAllocColor(display, cmap, &xcolor);
452 pixel = xcolor.pixel;
458 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
460 unsigned int color_r = (color >> 16) & 0xff;
461 unsigned int color_g = (color >> 8) & 0xff;
462 unsigned int color_b = (color >> 0) & 0xff;
464 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
467 /* execute all pending screen drawing operations */
468 inline void FlushDisplay(void)
475 /* execute and wait for all pending screen drawing operations */
476 inline void SyncDisplay(void)
479 XSync(display, FALSE);
483 inline void KeyboardAutoRepeatOn(void)
486 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
487 SDL_DEFAULT_REPEAT_INTERVAL / 2);
488 SDL_EnableUNICODE(1);
491 XAutoRepeatOn(display);
495 inline void KeyboardAutoRepeatOff(void)
498 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
499 SDL_EnableUNICODE(0);
502 XAutoRepeatOff(display);
506 inline boolean PointerInWindow(DrawWindow *window)
516 /* if XQueryPointer() returns False, the pointer
517 is not on the same screen as the specified window */
518 return XQueryPointer(display, window->drawable, &root, &child,
519 &root_x, &root_y, &win_x, &win_y, &mask);
523 inline boolean SetVideoMode(boolean fullscreen)
526 return SDLSetVideoMode(&backbuffer, fullscreen);
528 boolean success = TRUE;
530 if (fullscreen && video.fullscreen_available)
532 Error(ERR_WARN, "fullscreen not available in X11 version");
534 /* display error message only once */
535 video.fullscreen_available = FALSE;
544 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
547 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
548 (!fullscreen && video.fullscreen_enabled))
549 fullscreen = SetVideoMode(fullscreen);
555 Bitmap *LoadImage(char *basename)
560 sprintf(filename, "%s/%s/%s",
561 options.ro_base_directory, GRAPHICS_DIRECTORY, basename);
563 #if defined(TARGET_SDL)
564 new_bitmap = SDLLoadImage(filename);
566 new_bitmap = X11LoadImage(filename);
573 /* ========================================================================= */
574 /* audio functions */
575 /* ========================================================================= */
577 inline void OpenAudio(void)
579 /* always start with reliable default values */
580 audio.sound_available = FALSE;
581 audio.music_available = FALSE;
582 audio.loops_available = FALSE;
583 audio.mods_available = FALSE;
584 audio.sound_enabled = FALSE;
586 audio.soundserver_pipe[0] = audio.soundserver_pipe[1] = 0;
587 audio.soundserver_pid = 0;
588 audio.device_name = NULL;
592 audio.music_channel = 0;
595 #if defined(TARGET_SDL)
597 #elif defined(PLATFORM_MSDOS)
599 #elif defined(PLATFORM_UNIX)
604 inline void CloseAudio(void)
606 #if defined(TARGET_SDL)
608 #elif defined(PLATFORM_MSDOS)
610 #elif defined(PLATFORM_UNIX)
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)