1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2002 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 LevelDirTree *leveldir_first = NULL;
44 LevelDirTree *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 InitProgramInfo(char *argv0,
70 char *userdata_directory, char *program_title,
71 char *window_title, char *icon_title,
72 char *x11_icon_filename, char *x11_iconmask_filename,
73 char *msdos_pointer_filename,
74 char *cookie_prefix, char *filename_prefix,
77 program.command_basename =
78 (strrchr(argv0, '/') ? strrchr(argv0, '/') + 1 : argv0);
80 program.userdata_directory = userdata_directory;
81 program.program_title = program_title;
82 program.window_title = window_title;
83 program.icon_title = icon_title;
84 program.x11_icon_filename = x11_icon_filename;
85 program.x11_iconmask_filename = x11_iconmask_filename;
86 program.msdos_pointer_filename = msdos_pointer_filename;
88 program.cookie_prefix = cookie_prefix;
89 program.filename_prefix = filename_prefix;
91 program.version_major = VERSION_MAJOR(program_version);
92 program.version_minor = VERSION_MINOR(program_version);
93 program.version_patch = VERSION_PATCH(program_version);
96 void InitExitFunction(void (*exit_function)(int))
98 program.exit_function = exit_function;
100 /* set signal handlers to custom exit function */
101 signal(SIGINT, exit_function);
102 signal(SIGTERM, exit_function);
104 #if defined(TARGET_SDL)
105 /* set exit function to automatically cleanup SDL stuff after exit() */
110 void InitPlatformDependantStuff(void)
112 #if defined(PLATFORM_MSDOS)
117 #if defined(TARGET_SDL)
118 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
119 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
123 void ClosePlatformDependantStuff(void)
125 #if defined(PLATFORM_MSDOS)
130 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
131 int real_sx, int real_sy,
132 int full_sxsize, int full_sysize,
133 Bitmap *field_save_buffer)
139 gfx.real_sx = real_sx;
140 gfx.real_sy = real_sy;
141 gfx.full_sxsize = full_sxsize;
142 gfx.full_sysize = full_sysize;
144 gfx.field_save_buffer = field_save_buffer;
146 gfx.background_bitmap = NULL;
147 gfx.background_bitmap_mask = REDRAW_NONE;
149 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
150 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
153 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
161 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
169 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
171 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
172 gfx.scrollbuffer_width = scrollbuffer_width;
173 gfx.scrollbuffer_height = scrollbuffer_height;
176 void SetDrawDeactivationMask(int draw_deactivation_mask)
178 gfx.draw_deactivation_mask = draw_deactivation_mask;
181 void SetDrawBackgroundMask(int draw_background_mask)
183 gfx.draw_background_mask = draw_background_mask;
186 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
187 int dest_x, int dest_y, int width, int height)
189 int bitmap_xsize = width;
190 int bitmap_ysize = height;
191 int tile_xsize = tile->width;
192 int tile_ysize = tile->height;
193 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
194 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
197 for (y=0; y < tile_ysteps; y++)
199 for (x=0; x < tile_xsteps; x++)
201 int draw_x = dest_x + x * tile_xsize;
202 int draw_y = dest_y + y * tile_ysize;
203 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
204 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
206 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
211 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
213 static Bitmap *main_bitmap_tile = NULL;
214 static Bitmap *door_bitmap_tile = NULL;
216 if (mask == REDRAW_FIELD)
218 if (background_bitmap_tile == main_bitmap_tile)
219 return; /* main background tile has not changed */
221 main_bitmap_tile = background_bitmap_tile;
223 else if (mask == REDRAW_DOOR_1)
225 if (background_bitmap_tile == door_bitmap_tile)
226 return; /* main background tile has not changed */
228 door_bitmap_tile = background_bitmap_tile;
230 else /* should not happen */
233 if (background_bitmap_tile)
234 gfx.background_bitmap_mask |= mask;
236 gfx.background_bitmap_mask &= ~mask;
238 if (gfx.background_bitmap == NULL)
239 gfx.background_bitmap = CreateBitmap(video.width, video.height,
242 if (background_bitmap_tile == NULL) /* empty background requested */
245 if (mask == REDRAW_FIELD)
246 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
247 gfx.real_sx, gfx.real_sy,
248 gfx.full_sxsize, gfx.full_sysize);
250 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
252 gfx.dxsize, gfx.dysize);
255 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
257 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
260 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
262 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
266 /* ========================================================================= */
267 /* video functions */
268 /* ========================================================================= */
270 inline static int GetRealDepth(int depth)
272 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
275 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
276 int width, int height, Pixel color)
279 SDLFillRectangle(bitmap, x, y, width, height, color);
281 X11FillRectangle(bitmap, x, y, width, height, color);
285 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
286 int src_x, int src_y, int width, int height,
287 int dst_x, int dst_y, int mask_mode)
290 SDLCopyArea(src_bitmap, dst_bitmap,
291 src_x, src_y, width, height, dst_x, dst_y, mask_mode);
293 X11CopyArea(src_bitmap, dst_bitmap,
294 src_x, src_y, width, height, dst_x, dst_y, mask_mode);
298 inline void InitVideoDisplay(void)
300 #if defined(TARGET_SDL)
301 SDLInitVideoDisplay();
303 X11InitVideoDisplay();
307 inline void CloseVideoDisplay(void)
309 KeyboardAutoRepeatOn();
311 #if defined(TARGET_SDL)
312 SDL_QuitSubSystem(SDL_INIT_VIDEO);
316 XCloseDisplay(display);
320 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
321 int width, int height, int depth,
325 video.height = height;
326 video.depth = GetRealDepth(depth);
327 video.fullscreen_available = FULLSCREEN_STATUS;
328 video.fullscreen_enabled = FALSE;
331 SDLInitVideoBuffer(backbuffer, window, fullscreen);
333 X11InitVideoBuffer(backbuffer, window);
337 inline Bitmap *CreateBitmapStruct(void)
340 return checked_calloc(sizeof(struct SDLSurfaceInfo));
342 return checked_calloc(sizeof(struct X11DrawableInfo));
346 inline Bitmap *CreateBitmap(int width, int height, int depth)
348 Bitmap *new_bitmap = CreateBitmapStruct();
349 int real_depth = GetRealDepth(depth);
352 SDL_Surface *surface_tmp, *surface_native;
354 if ((surface_tmp = SDL_CreateRGBSurface(SURFACE_FLAGS, width, height,
355 real_depth, 0, 0, 0, 0))
357 Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
359 if ((surface_native = SDL_DisplayFormat(surface_tmp)) == NULL)
360 Error(ERR_EXIT, "SDL_DisplayFormat() failed: %s", SDL_GetError());
362 SDL_FreeSurface(surface_tmp);
364 new_bitmap->surface = surface_native;
368 if ((pixmap = XCreatePixmap(display, window->drawable,
369 width, height, real_depth))
371 Error(ERR_EXIT, "cannot create pixmap");
373 new_bitmap->drawable = pixmap;
376 Error(ERR_EXIT, "Window GC needed for Bitmap -- create Window first");
378 new_bitmap->gc = window->gc;
380 new_bitmap->line_gc[0] = window->line_gc[0];
381 new_bitmap->line_gc[1] = window->line_gc[1];
384 new_bitmap->width = width;
385 new_bitmap->height = height;
390 inline static void FreeBitmapPointers(Bitmap *bitmap)
397 SDL_FreeSurface(bitmap->surface);
398 if (bitmap->surface_masked)
399 SDL_FreeSurface(bitmap->surface_masked);
400 bitmap->surface = NULL;
401 bitmap->surface_masked = NULL;
403 /* The X11 version seems to have a memory leak here -- although
404 "XFreePixmap()" is called, the corresponding memory seems not
405 to be freed (according to "ps"). The SDL version apparently
406 does not have this problem. */
408 if (bitmap->drawable)
409 XFreePixmap(display, bitmap->drawable);
410 if (bitmap->clip_mask)
411 XFreePixmap(display, bitmap->clip_mask);
412 if (bitmap->stored_clip_gc)
413 XFreeGC(display, bitmap->stored_clip_gc);
414 /* the other GCs are only pointers to GCs used elsewhere */
415 bitmap->drawable = None;
416 bitmap->clip_mask = None;
417 bitmap->stored_clip_gc = None;
420 if (bitmap->source_filename)
421 free(bitmap->source_filename);
422 bitmap->source_filename = NULL;
425 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
428 if (src_bitmap == NULL || dst_bitmap == NULL)
431 FreeBitmapPointers(dst_bitmap);
433 *dst_bitmap = *src_bitmap;
436 inline void FreeBitmap(Bitmap *bitmap)
441 FreeBitmapPointers(bitmap);
446 inline void CloseWindow(DrawWindow *window)
449 if (window->drawable)
451 XUnmapWindow(display, window->drawable);
452 XDestroyWindow(display, window->drawable);
455 XFreeGC(display, window->gc);
459 static inline boolean CheckDrawingArea(int x, int y, int width, int height,
462 if (draw_mask == REDRAW_NONE)
465 if (draw_mask & REDRAW_ALL)
468 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
471 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
474 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
480 inline boolean DrawingDeactivated(int x, int y, int width, int height)
482 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
485 inline boolean DrawingOnBackground(int x, int y)
487 return ((gfx.draw_background_mask & gfx.background_bitmap_mask) &&
488 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
491 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
492 int src_x, int src_y, int width, int height,
493 int dst_x, int dst_y)
495 if (DrawingDeactivated(dst_x, dst_y, width, height))
498 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
499 dst_x, dst_y, BLIT_OPAQUE);
502 inline void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
505 if (DrawingDeactivated(x, y, width, height))
508 sysFillRectangle(bitmap, x, y, width, height, color);
511 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
513 FillRectangle(bitmap, x, y, width, height, BlackPixel(display, screen));
516 inline void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
517 int width, int height)
519 if (DrawingOnBackground(x, y))
520 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
522 ClearRectangle(bitmap, x, y, width, height);
527 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
531 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
536 bitmap->clip_gc = clip_gc;
537 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
540 last_clip_gc = clip_gc;
545 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
550 bitmap->clip_gc = clip_gc;
551 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
554 last_clip_gc = clip_gc;
559 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
560 int src_x, int src_y,
561 int width, int height,
562 int dst_x, int dst_y)
564 if (DrawingDeactivated(dst_x, dst_y, width, height))
567 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
568 dst_x, dst_y, BLIT_MASKED);
571 inline void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
572 int src_x, int src_y,
573 int width, int height,
574 int dst_x, int dst_y)
576 if (DrawingOnBackground(dst_x, dst_y))
578 /* draw background */
579 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
582 /* draw foreground */
583 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
584 dst_x - src_x, dst_y - src_y);
585 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
589 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
593 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
597 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, 0xffffff);
599 XSetForeground(display, bitmap->gc, WhitePixel(display, screen));
600 XDrawLine(display, bitmap->drawable, bitmap->gc, from_x, from_y, to_x, to_y);
604 #if !defined(TARGET_X11_NATIVE)
605 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
606 int to_x, int to_y, Pixel pixel, int line_width)
610 for (x=0; x<line_width; x++)
612 for (y=0; y<line_width; y++)
614 int dx = x - line_width / 2;
615 int dy = y - line_width / 2;
617 if ((x == 0 && y == 0) ||
618 (x == 0 && y == line_width - 1) ||
619 (x == line_width - 1 && y == 0) ||
620 (x == line_width - 1 && y == line_width - 1))
623 #if defined(TARGET_SDL)
625 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
626 #elif defined(TARGET_ALLEGRO)
627 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
628 to_x + dx, to_y + dy, pixel);
635 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
638 #if !defined(TARGET_X11_NATIVE)
642 for (i=0; i<num_points - 1; i++)
643 DrawLine(bitmap, points[i].x, points[i].y,
644 points[i + 1].x, points[i + 1].y, pixel, line_width);
647 SDLDrawLines(bitmap->surface, points, num_points, pixel);
650 XSetForeground(display, bitmap->line_gc[1], pixel);
651 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
652 (XPoint *)points, num_points, CoordModeOrigin);
656 inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
658 #if defined(TARGET_SDL)
659 return SDLGetPixel(bitmap, x, y);
660 #elif defined(TARGET_ALLEGRO)
661 return AllegroGetPixel(bitmap->drawable, x, y);
663 return X11GetPixel(bitmap, x, y);
667 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
668 unsigned int color_g, unsigned int color_b)
670 #if defined(TARGET_SDL)
671 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
672 #elif defined(TARGET_ALLEGRO)
673 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
675 return X11GetPixelFromRGB(color_r, color_g, color_b);
679 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
681 unsigned int color_r = (color >> 16) & 0xff;
682 unsigned int color_g = (color >> 8) & 0xff;
683 unsigned int color_b = (color >> 0) & 0xff;
685 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
688 /* execute all pending screen drawing operations */
689 inline void FlushDisplay(void)
696 /* execute and wait for all pending screen drawing operations */
697 inline void SyncDisplay(void)
700 XSync(display, FALSE);
704 inline void KeyboardAutoRepeatOn(void)
707 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
708 SDL_DEFAULT_REPEAT_INTERVAL / 2);
709 SDL_EnableUNICODE(1);
712 XAutoRepeatOn(display);
716 inline void KeyboardAutoRepeatOff(void)
719 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
720 SDL_EnableUNICODE(0);
723 XAutoRepeatOff(display);
727 inline boolean PointerInWindow(DrawWindow *window)
737 /* if XQueryPointer() returns False, the pointer
738 is not on the same screen as the specified window */
739 return XQueryPointer(display, window->drawable, &root, &child,
740 &root_x, &root_y, &win_x, &win_y, &mask);
744 inline boolean SetVideoMode(boolean fullscreen)
747 return SDLSetVideoMode(&backbuffer, fullscreen);
749 boolean success = TRUE;
751 if (fullscreen && video.fullscreen_available)
753 Error(ERR_WARN, "fullscreen not available in X11 version");
755 /* display error message only once */
756 video.fullscreen_available = FALSE;
765 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
768 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
769 (!fullscreen && video.fullscreen_enabled))
770 fullscreen = SetVideoMode(fullscreen);
776 Bitmap *LoadImage(char *filename)
780 #if defined(TARGET_SDL)
781 new_bitmap = SDLLoadImage(filename);
783 new_bitmap = X11LoadImage(filename);
787 new_bitmap->source_filename = getStringCopy(filename);
792 Bitmap *LoadCustomImage(char *basename)
794 char *filename = getCustomImageFilename(basename);
797 if (filename == NULL)
798 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
800 if ((new_bitmap = LoadImage(filename)) == NULL)
801 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
806 void ReloadCustomImage(Bitmap *bitmap, char *basename)
808 char *filename = getCustomImageFilename(basename);
811 if (filename == NULL) /* (should never happen) */
813 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
817 if (strcmp(filename, bitmap->source_filename) == 0)
819 /* The old and new image are the same (have the same filename and path).
820 This usually means that this image does not exist in this graphic set
821 and a fallback to the existing image is done. */
826 if ((new_bitmap = LoadImage(filename)) == NULL)
828 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
832 if (bitmap->width != new_bitmap->width ||
833 bitmap->height != new_bitmap->height)
835 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
837 FreeBitmap(new_bitmap);
841 TransferBitmapPointers(new_bitmap, bitmap);
845 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
847 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
849 #if defined(TARGET_SDL)
850 SDLZoomBitmap(src_bitmap, dst_bitmap);
852 X11ZoomBitmap(src_bitmap, dst_bitmap);
858 void CreateBitmapWithSmallBitmaps(Bitmap *src_bitmap)
860 Bitmap *tmp_bitmap, *tmp_bitmap_2, *tmp_bitmap_8;
861 int src_width, src_height;
862 int tmp_width, tmp_height;
864 src_width = src_bitmap->width;
865 src_height = src_bitmap->height;
867 tmp_width = src_width;
868 tmp_height = src_height + src_height / 2;
870 tmp_bitmap = CreateBitmap(tmp_width, tmp_height, DEFAULT_DEPTH);
872 tmp_bitmap_2 = ZoomBitmap(src_bitmap, src_width / 2, src_height / 2);
873 tmp_bitmap_8 = ZoomBitmap(src_bitmap, src_width / 8, src_height / 8);
875 BlitBitmap(src_bitmap, tmp_bitmap, 0, 0, src_width, src_height, 0, 0);
876 BlitBitmap(tmp_bitmap_2, tmp_bitmap, 0, 0, src_width / 2, src_height / 2,
878 BlitBitmap(tmp_bitmap_8, tmp_bitmap, 0, 0, src_width / 8, src_height / 8,
879 3 * src_width / 4, src_height);
881 FreeBitmap(tmp_bitmap_2);
882 FreeBitmap(tmp_bitmap_8);
885 src_bitmap->surface = tmp_bitmap->surface;
886 tmp_bitmap->surface = NULL;
888 src_bitmap->drawable = tmp_bitmap->drawable;
889 tmp_bitmap->drawable = None;
892 src_bitmap->height = tmp_bitmap->height;
894 FreeBitmap(tmp_bitmap);
898 /* ========================================================================= */
899 /* audio functions */
900 /* ========================================================================= */
902 inline void OpenAudio(void)
904 /* always start with reliable default values */
905 audio.sound_available = FALSE;
906 audio.music_available = FALSE;
907 audio.loops_available = FALSE;
909 audio.sound_enabled = FALSE;
910 audio.sound_deactivated = FALSE;
912 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
914 audio.device_name = NULL;
915 audio.device_fd = -1;
917 audio.num_channels = 0;
918 audio.music_channel = 0;
919 audio.first_sound_channel = 0;
921 #if defined(TARGET_SDL)
923 #elif defined(PLATFORM_UNIX)
925 #elif defined(PLATFORM_MSDOS)
930 inline void CloseAudio(void)
932 #if defined(TARGET_SDL)
934 #elif defined(PLATFORM_UNIX)
936 #elif defined(PLATFORM_MSDOS)
940 audio.sound_enabled = FALSE;
943 inline void SetAudioMode(boolean enabled)
945 if (!audio.sound_available)
948 audio.sound_enabled = enabled;
952 /* ========================================================================= */
953 /* event functions */
954 /* ========================================================================= */
956 inline void InitEventFilter(EventFilter filter_function)
959 /* set event filter to filter out certain events */
960 SDL_SetEventFilter(filter_function);
964 inline boolean PendingEvent(void)
967 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
969 return (XPending(display) ? TRUE : FALSE);
973 inline void NextEvent(Event *event)
978 XNextEvent(display, event);
982 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
986 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
987 (int)event->keysym.unicode,
988 (int)event->keysym.sym,
989 (int)SDL_GetModState());
992 if (with_modifiers &&
993 event->keysym.unicode > 0x0000 &&
994 event->keysym.unicode < 0x2000)
995 return event->keysym.unicode;
997 return event->keysym.sym;
1000 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1001 (int)XLookupKeysym(event, event->state),
1002 (int)XLookupKeysym(event, 0));
1006 return XLookupKeysym(event, event->state);
1008 return XLookupKeysym(event, 0);
1012 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1014 if (event->type != EVENT_CLIENTMESSAGE)
1017 #if defined(TARGET_SDL)
1018 return TRUE; /* the only possible message here is SDL_QUIT */
1019 #elif defined(PLATFORM_UNIX)
1020 if ((event->window == window->drawable) &&
1021 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1029 /* ========================================================================= */
1030 /* joystick functions */
1031 /* ========================================================================= */
1033 inline void InitJoysticks()
1038 return; /* joysticks generally deactivated by compile-time directive */
1041 /* always start with reliable default values */
1042 joystick.status = JOYSTICK_NOT_AVAILABLE;
1043 for (i=0; i<MAX_PLAYERS; i++)
1044 joystick.fd[i] = -1; /* joystick device closed */
1046 #if defined(TARGET_SDL)
1048 #elif defined(PLATFORM_UNIX)
1049 UnixInitJoysticks();
1050 #elif defined(PLATFORM_MSDOS)
1051 MSDOSInitJoysticks();
1055 inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1057 #if defined(TARGET_SDL)
1058 return SDLReadJoystick(nr, x, y, b1, b2);
1059 #elif defined(PLATFORM_UNIX)
1060 return UnixReadJoystick(nr, x, y, b1, b2);
1061 #elif defined(PLATFORM_MSDOS)
1062 return MSDOSReadJoystick(nr, x, y, b1, b2);