1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2001 Artsoft Entertainment *
6 * Detmolder Strasse 189 *
9 * e-mail: info@artsoft.org *
10 *----------------------------------------------------------*
12 ***********************************************************/
19 #if defined(PLATFORM_MSDOS)
30 /* ========================================================================= */
31 /* exported variables */
32 /* ========================================================================= */
34 struct ProgramInfo program;
35 struct OptionInfo options;
36 struct VideoSystemInfo video;
37 struct AudioSystemInfo audio;
39 struct ArtworkInfo artwork;
40 struct JoystickInfo joystick;
41 struct SetupInfo setup;
43 struct LevelDirInfo *leveldir_first = NULL;
44 struct LevelDirInfo *leveldir_current = NULL;
47 Display *display = NULL;
48 Visual *visual = NULL;
52 DrawWindow *window = NULL;
53 DrawBuffer *backbuffer = NULL;
54 DrawBuffer *drawto = NULL;
56 int button_status = MB_NOT_PRESSED;
57 boolean motion_status = FALSE;
59 int redraw_mask = REDRAW_NONE;
65 /* ========================================================================= */
66 /* init/close functions */
67 /* ========================================================================= */
69 void InitCommandName(char *argv0)
71 program.command_basename =
72 (strrchr(argv0, '/') ? strrchr(argv0, '/') + 1 : argv0);
75 void InitExitFunction(void (*exit_function)(int))
77 program.exit_function = exit_function;
79 /* set signal handlers to custom exit function */
80 signal(SIGINT, exit_function);
81 signal(SIGTERM, exit_function);
83 #if defined(TARGET_SDL)
84 /* set exit function to automatically cleanup SDL stuff after exit() */
89 void InitPlatformDependantStuff(void)
91 #if defined(PLATFORM_MSDOS)
95 #if !defined(PLATFORM_UNIX)
96 program.userdata_directory = "userdata";
100 #if defined(TARGET_SDL)
101 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
102 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
106 void ClosePlatformDependantStuff(void)
108 #if !defined(PLATFORM_UNIX)
113 void InitProgramInfo(char *unix_userdata_directory, char *program_title,
114 char *window_title, char *icon_title,
115 char *x11_icon_basename, char *x11_iconmask_basename,
116 char *msdos_pointer_basename,
117 char *cookie_prefix, char *filename_prefix,
120 char *x11_icon_filename =
121 getPath2(options.graphics_directory, x11_icon_basename);
122 char *x11_iconmask_filename =
123 getPath2(options.graphics_directory, x11_iconmask_basename);
124 char *msdos_pointer_filename =
125 getPath2(options.graphics_directory, msdos_pointer_basename);
127 #if defined(PLATFORM_UNIX)
128 program.userdata_directory = unix_userdata_directory;
130 program.userdata_directory = "userdata";
133 program.program_title = program_title;
134 program.window_title = window_title;
135 program.icon_title = icon_title;
136 program.x11_icon_filename = x11_icon_filename;
137 program.x11_iconmask_filename = x11_iconmask_filename;
138 program.msdos_pointer_filename = msdos_pointer_filename;
140 program.cookie_prefix = cookie_prefix;
141 program.filename_prefix = filename_prefix;
143 program.version_major = VERSION_MAJOR(program_version);
144 program.version_minor = VERSION_MINOR(program_version);
145 program.version_patch = VERSION_PATCH(program_version);
148 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
149 int real_sx, int real_sy,
150 int full_sxsize, int full_sysize)
156 gfx.real_sx = real_sx;
157 gfx.real_sy = real_sy;
158 gfx.full_sxsize = full_sxsize;
159 gfx.full_sysize = full_sysize;
162 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
170 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
178 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
180 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
181 gfx.scrollbuffer_width = scrollbuffer_width;
182 gfx.scrollbuffer_height = scrollbuffer_height;
186 /* ========================================================================= */
187 /* video functions */
188 /* ========================================================================= */
190 inline static int GetRealDepth(int depth)
192 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
195 inline void InitVideoDisplay(void)
197 #if defined(TARGET_SDL)
198 SDLInitVideoDisplay();
200 X11InitVideoDisplay();
204 inline void CloseVideoDisplay(void)
206 KeyboardAutoRepeatOn();
208 #if defined(TARGET_SDL)
209 SDL_QuitSubSystem(SDL_INIT_VIDEO);
212 XCloseDisplay(display);
216 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
217 int width, int height, int depth,
221 video.height = height;
222 video.depth = GetRealDepth(depth);
223 video.fullscreen_available = FULLSCREEN_STATUS;
224 video.fullscreen_enabled = FALSE;
227 SDLInitVideoBuffer(backbuffer, window, fullscreen);
229 X11InitVideoBuffer(backbuffer, window);
233 inline Bitmap *CreateBitmapStruct(void)
236 return checked_calloc(sizeof(struct SDLSurfaceInfo));
238 return checked_calloc(sizeof(struct X11DrawableInfo));
242 inline Bitmap *CreateBitmap(int width, int height, int depth)
244 Bitmap *new_bitmap = CreateBitmapStruct();
245 int real_depth = GetRealDepth(depth);
248 SDL_Surface *surface_tmp, *surface_native;
250 if ((surface_tmp = SDL_CreateRGBSurface(SURFACE_FLAGS, width, height,
251 real_depth, 0, 0, 0, 0))
253 Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
255 if ((surface_native = SDL_DisplayFormat(surface_tmp)) == NULL)
256 Error(ERR_EXIT, "SDL_DisplayFormat() failed: %s", SDL_GetError());
258 SDL_FreeSurface(surface_tmp);
260 new_bitmap->surface = surface_native;
264 if ((pixmap = XCreatePixmap(display, window->drawable,
265 width, height, real_depth))
267 Error(ERR_EXIT, "cannot create pixmap");
269 new_bitmap->drawable = pixmap;
272 Error(ERR_EXIT, "Window GC needed for Bitmap -- create Window first");
274 new_bitmap->gc = window->gc;
276 new_bitmap->line_gc[0] = window->line_gc[0];
277 new_bitmap->line_gc[1] = window->line_gc[1];
283 inline void FreeBitmap(Bitmap *bitmap)
290 SDL_FreeSurface(bitmap->surface);
291 if (bitmap->surface_masked)
292 SDL_FreeSurface(bitmap->surface_masked);
294 if (bitmap->drawable)
295 XFreePixmap(display, bitmap->drawable);
296 if (bitmap->clip_mask)
297 XFreePixmap(display, bitmap->clip_mask);
298 if (bitmap->stored_clip_gc)
299 XFreeGC(display, bitmap->stored_clip_gc);
302 if (bitmap->source_filename)
303 free(bitmap->source_filename);
308 inline void CloseWindow(DrawWindow *window)
311 if (window->drawable)
313 XUnmapWindow(display, window->drawable);
314 XDestroyWindow(display, window->drawable);
317 XFreeGC(display, window->gc);
321 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
322 int src_x, int src_y,
323 int width, int height,
324 int dst_x, int dst_y)
327 SDLCopyArea(src_bitmap, dst_bitmap,
328 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_OPAQUE);
330 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
331 dst_bitmap->gc, src_x, src_y, width, height, dst_x, dst_y);
335 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
338 SDLFillRectangle(bitmap, x, y, width, height, 0x000000);
340 XFillRectangle(display, bitmap->drawable, bitmap->gc, x, y, width, height);
346 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
350 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
355 bitmap->clip_gc = clip_gc;
356 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
359 last_clip_gc = clip_gc;
364 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
369 bitmap->clip_gc = clip_gc;
370 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
373 last_clip_gc = clip_gc;
378 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
379 int src_x, int src_y,
380 int width, int height,
381 int dst_x, int dst_y)
384 SDLCopyArea(src_bitmap, dst_bitmap,
385 src_x, src_y, width, height, dst_x, dst_y, SDLCOPYAREA_MASKED);
387 XCopyArea(display, src_bitmap->drawable, dst_bitmap->drawable,
388 src_bitmap->clip_gc, src_x, src_y, width, height, dst_x, dst_y);
392 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
396 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, 0xffffff);
398 XSetForeground(display, bitmap->gc, WhitePixel(display, screen));
399 XDrawLine(display, bitmap->drawable, bitmap->gc, from_x, from_y, to_x, to_y);
400 XSetForeground(display, bitmap->gc, BlackPixel(display, screen));
404 #if !defined(TARGET_X11_NATIVE)
405 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
406 int to_x, int to_y, Pixel pixel, int line_width)
410 for (x=0; x<line_width; x++)
412 for (y=0; y<line_width; y++)
414 int dx = x - line_width / 2;
415 int dy = y - line_width / 2;
417 if ((x == 0 && y == 0) ||
418 (x == 0 && y == line_width - 1) ||
419 (x == line_width - 1 && y == 0) ||
420 (x == line_width - 1 && y == line_width - 1))
423 #if defined(TARGET_SDL)
425 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
426 #elif defined(TARGET_ALLEGRO)
427 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
428 to_x + dx, to_y + dy, pixel);
435 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
438 #if !defined(TARGET_X11_NATIVE)
442 for (i=0; i<num_points - 1; i++)
443 DrawLine(bitmap, points[i].x, points[i].y,
444 points[i + 1].x, points[i + 1].y, pixel, line_width);
447 SDLDrawLines(bitmap->surface, points, num_points, pixel);
450 XSetForeground(display, bitmap->line_gc[1], pixel);
451 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
452 (XPoint *)points, num_points, CoordModeOrigin);
454 XSetForeground(display, gc, BlackPixel(display, screen));
459 inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
461 #if defined(TARGET_SDL)
462 return SDLGetPixel(bitmap, x, y);
463 #elif defined(TARGET_ALLEGRO)
464 return AllegroGetPixel(bitmap->drawable, x, y);
466 unsigned long pixel_value;
469 pixel_image = XGetImage(display, bitmap->drawable, x, y, 1, 1,
471 pixel_value = XGetPixel(pixel_image, 0, 0);
473 XDestroyImage(pixel_image);
479 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
480 unsigned int color_g, unsigned int color_b)
484 #if defined(TARGET_SDL)
485 pixel = SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
486 #elif defined(TARGET_ALLEGRO)
487 pixel = AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
488 #elif defined(TARGET_X11_NATIVE)
491 xcolor.flags = DoRed | DoGreen | DoBlue;
492 xcolor.red = (color_r << 8);
493 xcolor.green = (color_g << 8);
494 xcolor.blue = (color_b << 8);
495 XAllocColor(display, cmap, &xcolor);
496 pixel = xcolor.pixel;
502 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
504 unsigned int color_r = (color >> 16) & 0xff;
505 unsigned int color_g = (color >> 8) & 0xff;
506 unsigned int color_b = (color >> 0) & 0xff;
508 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
511 /* execute all pending screen drawing operations */
512 inline void FlushDisplay(void)
519 /* execute and wait for all pending screen drawing operations */
520 inline void SyncDisplay(void)
523 XSync(display, FALSE);
527 inline void KeyboardAutoRepeatOn(void)
530 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
531 SDL_DEFAULT_REPEAT_INTERVAL / 2);
532 SDL_EnableUNICODE(1);
535 XAutoRepeatOn(display);
539 inline void KeyboardAutoRepeatOff(void)
542 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
543 SDL_EnableUNICODE(0);
546 XAutoRepeatOff(display);
550 inline boolean PointerInWindow(DrawWindow *window)
560 /* if XQueryPointer() returns False, the pointer
561 is not on the same screen as the specified window */
562 return XQueryPointer(display, window->drawable, &root, &child,
563 &root_x, &root_y, &win_x, &win_y, &mask);
567 inline boolean SetVideoMode(boolean fullscreen)
570 return SDLSetVideoMode(&backbuffer, fullscreen);
572 boolean success = TRUE;
574 if (fullscreen && video.fullscreen_available)
576 Error(ERR_WARN, "fullscreen not available in X11 version");
578 /* display error message only once */
579 video.fullscreen_available = FALSE;
588 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
591 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
592 (!fullscreen && video.fullscreen_enabled))
593 fullscreen = SetVideoMode(fullscreen);
599 Bitmap *LoadImage(char *filename)
603 #if defined(TARGET_SDL)
604 new_bitmap = SDLLoadImage(filename);
606 new_bitmap = X11LoadImage(filename);
612 Bitmap *LoadCustomImage(char *basename)
614 char *filename = getStringCopy(getCustomImageFilename(basename));
617 if ((new_bitmap = LoadImage(filename)) == NULL)
618 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
620 new_bitmap->source_filename = filename;
626 /* ========================================================================= */
627 /* audio functions */
628 /* ========================================================================= */
630 inline void OpenAudio(void)
632 /* always start with reliable default values */
633 audio.sound_available = FALSE;
634 audio.music_available = FALSE;
635 audio.loops_available = FALSE;
636 audio.mods_available = FALSE;
637 audio.sound_enabled = FALSE;
639 audio.soundserver_pipe[0] = audio.soundserver_pipe[1] = 0;
640 audio.soundserver_pid = 0;
641 audio.device_name = NULL;
645 audio.music_channel = 0;
648 #if defined(TARGET_SDL)
650 #elif defined(PLATFORM_UNIX)
652 #elif defined(PLATFORM_MSDOS)
657 inline void CloseAudio(void)
659 #if defined(TARGET_SDL)
661 #elif defined(PLATFORM_UNIX)
663 #elif defined(PLATFORM_MSDOS)
667 audio.sound_enabled = FALSE;
670 inline void SetAudioMode(boolean enabled)
672 if (!audio.sound_available)
675 audio.sound_enabled = enabled;
679 /* ========================================================================= */
680 /* event functions */
681 /* ========================================================================= */
683 inline void InitEventFilter(EventFilter filter_function)
686 /* set event filter to filter out certain events */
687 SDL_SetEventFilter(filter_function);
691 inline boolean PendingEvent(void)
694 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
696 return (XPending(display) ? TRUE : FALSE);
700 inline void NextEvent(Event *event)
705 XNextEvent(display, event);
709 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
713 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
714 (int)event->keysym.unicode,
715 (int)event->keysym.sym,
716 (int)SDL_GetModState());
719 if (with_modifiers && event->keysym.unicode != 0)
720 return event->keysym.unicode;
722 return event->keysym.sym;
725 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
726 (int)XLookupKeysym(event, event->state),
727 (int)XLookupKeysym(event, 0));
731 return XLookupKeysym(event, event->state);
733 return XLookupKeysym(event, 0);
737 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
739 if (event->type != EVENT_CLIENTMESSAGE)
742 #if defined(TARGET_SDL)
743 return TRUE; /* the only possible message here is SDL_QUIT */
744 #elif defined(PLATFORM_UNIX)
745 if ((event->window == window->drawable) &&
746 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
754 /* ========================================================================= */
755 /* joystick functions */
756 /* ========================================================================= */
758 inline void InitJoysticks()
763 return; /* joysticks generally deactivated by compile-time directive */
766 /* always start with reliable default values */
767 joystick.status = JOYSTICK_NOT_AVAILABLE;
768 for (i=0; i<MAX_PLAYERS; i++)
769 joystick.fd[i] = -1; /* joystick device closed */
771 #if defined(TARGET_SDL)
773 #elif defined(PLATFORM_UNIX)
775 #elif defined(PLATFORM_MSDOS)
776 MSDOSInitJoysticks();
780 inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
782 #if defined(TARGET_SDL)
783 return SDLReadJoystick(nr, x, y, b1, b2);
784 #elif defined(PLATFORM_UNIX)
785 return UnixReadJoystick(nr, x, y, b1, b2);
786 #elif defined(PLATFORM_MSDOS)
787 return MSDOSReadJoystick(nr, x, y, b1, b2);