1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2006 Artsoft Entertainment *
6 * Detmolder Strasse 189 *
9 * e-mail: info@artsoft.org *
10 *----------------------------------------------------------*
12 ***********************************************************/
19 #if defined(PLATFORM_MSDOS)
31 /* ========================================================================= */
32 /* exported variables */
33 /* ========================================================================= */
35 struct ProgramInfo program;
36 struct OptionInfo options;
37 struct VideoSystemInfo video;
38 struct AudioSystemInfo audio;
40 struct ArtworkInfo artwork;
41 struct JoystickInfo joystick;
42 struct SetupInfo setup;
44 LevelDirTree *leveldir_first_all = NULL;
45 LevelDirTree *leveldir_first = NULL;
46 LevelDirTree *leveldir_current = NULL;
49 Display *display = NULL;
50 Visual *visual = NULL;
54 DrawWindow *window = NULL;
55 DrawBuffer *backbuffer = NULL;
56 DrawBuffer *drawto = NULL;
58 int button_status = MB_NOT_PRESSED;
59 boolean motion_status = FALSE;
61 int redraw_mask = REDRAW_NONE;
67 /* ========================================================================= */
68 /* init/close functions */
69 /* ========================================================================= */
71 void InitProgramInfo(char *argv0,
72 char *userdata_subdir, char *userdata_subdir_unix,
73 char *program_title, char *window_title, char *icon_title,
74 char *x11_icon_filename, char *x11_iconmask_filename,
75 char *sdl_icon_filename, char *msdos_cursor_filename,
76 char *cookie_prefix, char *filename_prefix,
79 program.command_basepath = getBasePath(argv0);
80 program.command_basename = getBaseName(argv0);
82 program.userdata_subdir = userdata_subdir;
83 program.userdata_subdir_unix = userdata_subdir_unix;
84 program.userdata_path = getUserGameDataDir();
86 program.program_title = program_title;
87 program.window_title = window_title;
88 program.icon_title = icon_title;
90 program.x11_icon_filename = x11_icon_filename;
91 program.x11_iconmask_filename = x11_iconmask_filename;
92 program.sdl_icon_filename = sdl_icon_filename;
93 program.msdos_cursor_filename = msdos_cursor_filename;
95 program.cookie_prefix = cookie_prefix;
96 program.filename_prefix = filename_prefix;
98 program.version_major = VERSION_MAJOR(program_version);
99 program.version_minor = VERSION_MINOR(program_version);
100 program.version_patch = VERSION_PATCH(program_version);
102 program.error_filename = getErrorFilename(ERROR_BASENAME);
103 program.error_file = stderr;
106 void InitExitFunction(void (*exit_function)(int))
108 program.exit_function = exit_function;
110 /* set signal handlers to custom exit function */
111 signal(SIGINT, exit_function);
112 signal(SIGTERM, exit_function);
114 #if defined(TARGET_SDL)
115 /* set exit function to automatically cleanup SDL stuff after exit() */
120 void InitPlatformDependentStuff(void)
122 #if defined(PLATFORM_MSDOS)
126 #if defined(PLATFORM_MACOSX)
127 updateUserGameDataDir();
130 #if !defined(PLATFORM_UNIX) || defined(PLATFORM_MACOSX)
134 #if defined(TARGET_SDL)
135 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
136 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
142 void ClosePlatformDependentStuff(void)
144 #if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
148 #if defined(PLATFORM_MSDOS)
153 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
154 int real_sx, int real_sy,
155 int full_sxsize, int full_sysize,
156 Bitmap *field_save_buffer)
162 gfx.real_sx = real_sx;
163 gfx.real_sy = real_sy;
164 gfx.full_sxsize = full_sxsize;
165 gfx.full_sysize = full_sysize;
167 gfx.field_save_buffer = field_save_buffer;
169 gfx.background_bitmap = NULL;
170 gfx.background_bitmap_mask = REDRAW_NONE;
172 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
173 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
176 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
184 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
192 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
194 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
195 gfx.scrollbuffer_width = scrollbuffer_width;
196 gfx.scrollbuffer_height = scrollbuffer_height;
199 void SetDrawDeactivationMask(int draw_deactivation_mask)
201 gfx.draw_deactivation_mask = draw_deactivation_mask;
204 void SetDrawBackgroundMask(int draw_background_mask)
206 gfx.draw_background_mask = draw_background_mask;
209 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
210 int dest_x, int dest_y, int width, int height)
212 int bitmap_xsize = width;
213 int bitmap_ysize = height;
214 int tile_xsize = tile->width;
215 int tile_ysize = tile->height;
216 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
217 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
220 for (y = 0; y < tile_ysteps; y++)
222 for (x = 0; x < tile_xsteps; x++)
224 int draw_x = dest_x + x * tile_xsize;
225 int draw_y = dest_y + y * tile_ysize;
226 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
227 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
229 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
234 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
236 if (background_bitmap_tile != NULL)
237 gfx.background_bitmap_mask |= mask;
239 gfx.background_bitmap_mask &= ~mask;
241 if (gfx.background_bitmap == NULL)
242 gfx.background_bitmap = CreateBitmap(video.width, video.height,
245 if (background_bitmap_tile == NULL) /* empty background requested */
248 if (mask == REDRAW_ALL)
249 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
250 0, 0, video.width, video.height);
251 else if (mask == REDRAW_FIELD)
252 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
253 gfx.real_sx, gfx.real_sy,
254 gfx.full_sxsize, gfx.full_sysize);
255 else if (mask == REDRAW_DOOR_1)
257 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
259 gfx.dxsize, gfx.dysize);
263 void SetWindowBackgroundBitmap(Bitmap *background_bitmap_tile)
265 SetBackgroundBitmap(background_bitmap_tile, REDRAW_ALL);
268 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
270 SetBackgroundBitmap(NULL, REDRAW_ALL); /* !!! FIX THIS !!! */
271 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
274 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
276 SetBackgroundBitmap(NULL, REDRAW_ALL); /* !!! FIX THIS !!! */
277 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
281 /* ========================================================================= */
282 /* video functions */
283 /* ========================================================================= */
285 inline static int GetRealDepth(int depth)
287 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
290 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
291 int width, int height, Pixel color)
293 #if defined(TARGET_SDL)
294 SDLFillRectangle(bitmap, x, y, width, height, color);
296 X11FillRectangle(bitmap, x, y, width, height, color);
300 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
301 int src_x, int src_y, int width, int height,
302 int dst_x, int dst_y, int mask_mode)
304 #if defined(TARGET_SDL)
305 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
306 dst_x, dst_y, mask_mode);
308 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
309 dst_x, dst_y, mask_mode);
313 void InitVideoDisplay(void)
315 #if defined(TARGET_SDL)
316 SDLInitVideoDisplay();
318 X11InitVideoDisplay();
322 void CloseVideoDisplay(void)
324 KeyboardAutoRepeatOn();
326 #if defined(TARGET_SDL)
327 SDL_QuitSubSystem(SDL_INIT_VIDEO);
330 XCloseDisplay(display);
334 void InitVideoBuffer(int width, int height, int depth, boolean fullscreen)
337 video.height = height;
338 video.depth = GetRealDepth(depth);
340 video.fullscreen_available = FULLSCREEN_STATUS;
341 video.fullscreen_enabled = FALSE;
342 video.fullscreen_modes = NULL;
343 video.fullscreen_mode_current = NULL;
345 #if defined(TARGET_SDL)
346 SDLInitVideoBuffer(&backbuffer, &window, fullscreen);
348 X11InitVideoBuffer(&backbuffer, &window);
354 Bitmap *CreateBitmapStruct(void)
356 #if defined(TARGET_SDL)
357 return checked_calloc(sizeof(struct SDLSurfaceInfo));
359 return checked_calloc(sizeof(struct X11DrawableInfo));
363 Bitmap *CreateBitmap(int width, int height, int depth)
365 Bitmap *new_bitmap = CreateBitmapStruct();
366 int real_depth = GetRealDepth(depth);
368 #if defined(TARGET_SDL)
369 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
371 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
374 new_bitmap->width = width;
375 new_bitmap->height = height;
380 inline static void FreeBitmapPointers(Bitmap *bitmap)
385 #if defined(TARGET_SDL)
386 SDLFreeBitmapPointers(bitmap);
388 X11FreeBitmapPointers(bitmap);
391 checked_free(bitmap->source_filename);
392 bitmap->source_filename = NULL;
395 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
398 if (src_bitmap == NULL || dst_bitmap == NULL)
401 FreeBitmapPointers(dst_bitmap);
403 *dst_bitmap = *src_bitmap;
406 void FreeBitmap(Bitmap *bitmap)
411 FreeBitmapPointers(bitmap);
416 void CloseWindow(DrawWindow *window)
418 #if defined(TARGET_X11)
419 if (window->drawable)
421 XUnmapWindow(display, window->drawable);
422 XDestroyWindow(display, window->drawable);
425 XFreeGC(display, window->gc);
429 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
432 if (draw_mask == REDRAW_NONE)
435 if (draw_mask & REDRAW_ALL)
438 if ((draw_mask & REDRAW_FIELD) &&
439 x >= gfx.real_sx && x < gfx.real_sx + gfx.full_sxsize)
442 if ((draw_mask & REDRAW_DOOR_1) &&
443 x >= gfx.dx && y < gfx.dy + gfx.dysize)
446 if ((draw_mask & REDRAW_DOOR_2) &&
447 x >= gfx.dx && y >= gfx.vy)
453 boolean DrawingDeactivated(int x, int y, int width, int height)
455 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
458 boolean DrawingOnBackground(int x, int y)
460 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
461 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
464 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
465 int src_x, int src_y, int width, int height,
466 int dst_x, int dst_y)
468 if (DrawingDeactivated(dst_x, dst_y, width, height))
471 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
472 dst_x, dst_y, BLIT_OPAQUE);
475 void FadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
476 int fade_mode, int fade_delay, int post_delay,
477 void (*draw_border_function)(void))
479 #if defined(TARGET_SDL)
480 SDLFadeRectangle(bitmap_cross, x, y, width, height,
481 fade_mode, fade_delay, post_delay, draw_border_function);
483 X11FadeRectangle(bitmap_cross, x, y, width, height,
484 fade_mode, fade_delay, post_delay, draw_border_function);
488 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
491 if (DrawingDeactivated(x, y, width, height))
494 sysFillRectangle(bitmap, x, y, width, height, color);
497 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
499 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
502 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
503 int width, int height)
505 if (DrawingOnBackground(x, y))
506 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
508 ClearRectangle(bitmap, x, y, width, height);
511 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
513 #if defined(TARGET_X11)
516 bitmap->clip_gc = clip_gc;
517 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
522 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
524 #if defined(TARGET_X11)
527 bitmap->clip_gc = clip_gc;
528 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
533 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
534 int src_x, int src_y, int width, int height,
535 int dst_x, int dst_y)
537 if (DrawingDeactivated(dst_x, dst_y, width, height))
540 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
541 dst_x, dst_y, BLIT_MASKED);
544 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
545 int src_x, int src_y, int width, int height,
546 int dst_x, int dst_y)
548 if (DrawingOnBackground(dst_x, dst_y))
550 /* draw background */
551 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
554 /* draw foreground */
555 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
556 dst_x - src_x, dst_y - src_y);
557 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
561 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
565 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
568 #if defined(TARGET_SDL)
569 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
571 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
575 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
578 #if defined(TARGET_SDL)
579 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
581 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
585 #if !defined(TARGET_X11_NATIVE)
586 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
587 int to_x, int to_y, Pixel pixel, int line_width)
591 for (x = 0; x < line_width; x++)
593 for (y = 0; y < line_width; y++)
595 int dx = x - line_width / 2;
596 int dy = y - line_width / 2;
598 if ((x == 0 && y == 0) ||
599 (x == 0 && y == line_width - 1) ||
600 (x == line_width - 1 && y == 0) ||
601 (x == line_width - 1 && y == line_width - 1))
604 #if defined(TARGET_SDL)
606 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
607 #elif defined(TARGET_ALLEGRO)
608 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
609 to_x + dx, to_y + dy, pixel);
616 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
618 #if !defined(TARGET_X11_NATIVE)
622 for (i = 0; i < num_points - 1; i++)
623 DrawLine(bitmap, points[i].x, points[i].y,
624 points[i + 1].x, points[i + 1].y, pixel, line_width);
627 SDLDrawLines(bitmap->surface, points, num_points, pixel);
630 XSetForeground(display, bitmap->line_gc[1], pixel);
631 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
632 (XPoint *)points, num_points, CoordModeOrigin);
636 Pixel GetPixel(Bitmap *bitmap, int x, int y)
638 if (x < 0 || x >= bitmap->width ||
639 y < 0 || y >= bitmap->height)
642 #if defined(TARGET_SDL)
643 return SDLGetPixel(bitmap, x, y);
644 #elif defined(TARGET_ALLEGRO)
645 return AllegroGetPixel(bitmap->drawable, x, y);
647 return X11GetPixel(bitmap, x, y);
651 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
652 unsigned int color_g, unsigned int color_b)
654 #if defined(TARGET_SDL)
655 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
656 #elif defined(TARGET_ALLEGRO)
657 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
659 return X11GetPixelFromRGB(color_r, color_g, color_b);
663 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
665 unsigned int color_r = (color >> 16) & 0xff;
666 unsigned int color_g = (color >> 8) & 0xff;
667 unsigned int color_b = (color >> 0) & 0xff;
669 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
672 /* execute all pending screen drawing operations */
673 void FlushDisplay(void)
680 /* execute and wait for all pending screen drawing operations */
681 void SyncDisplay(void)
684 XSync(display, FALSE);
688 void KeyboardAutoRepeatOn(void)
690 #if defined(TARGET_SDL)
691 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
692 SDL_DEFAULT_REPEAT_INTERVAL / 2);
693 SDL_EnableUNICODE(1);
696 XAutoRepeatOn(display);
700 void KeyboardAutoRepeatOff(void)
702 #if defined(TARGET_SDL)
703 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
704 SDL_EnableUNICODE(0);
707 XAutoRepeatOff(display);
711 boolean PointerInWindow(DrawWindow *window)
713 #if defined(TARGET_SDL)
721 /* if XQueryPointer() returns False, the pointer
722 is not on the same screen as the specified window */
723 return XQueryPointer(display, window->drawable, &root, &child,
724 &root_x, &root_y, &win_x, &win_y, &mask);
728 boolean SetVideoMode(boolean fullscreen)
730 #if defined(TARGET_SDL)
731 return SDLSetVideoMode(&backbuffer, fullscreen);
733 boolean success = TRUE;
735 if (fullscreen && video.fullscreen_available)
737 Error(ERR_WARN, "fullscreen not available in X11 version");
739 /* display error message only once */
740 video.fullscreen_available = FALSE;
749 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
751 #if defined(TARGET_SDL)
752 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
753 (!fullscreen && video.fullscreen_enabled))
754 fullscreen = SetVideoMode(fullscreen);
760 Bitmap *LoadImage(char *filename)
764 #if defined(TARGET_SDL)
765 new_bitmap = SDLLoadImage(filename);
767 new_bitmap = X11LoadImage(filename);
771 new_bitmap->source_filename = getStringCopy(filename);
776 Bitmap *LoadCustomImage(char *basename)
778 char *filename = getCustomImageFilename(basename);
781 if (filename == NULL)
782 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
784 if ((new_bitmap = LoadImage(filename)) == NULL)
785 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
790 void ReloadCustomImage(Bitmap *bitmap, char *basename)
792 char *filename = getCustomImageFilename(basename);
795 if (filename == NULL) /* (should never happen) */
797 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
801 if (strEqual(filename, bitmap->source_filename))
803 /* The old and new image are the same (have the same filename and path).
804 This usually means that this image does not exist in this graphic set
805 and a fallback to the existing image is done. */
810 if ((new_bitmap = LoadImage(filename)) == NULL)
812 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
816 if (bitmap->width != new_bitmap->width ||
817 bitmap->height != new_bitmap->height)
819 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
821 FreeBitmap(new_bitmap);
825 TransferBitmapPointers(new_bitmap, bitmap);
829 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
831 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
833 #if defined(TARGET_SDL)
834 SDLZoomBitmap(src_bitmap, dst_bitmap);
836 X11ZoomBitmap(src_bitmap, dst_bitmap);
842 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
843 boolean create_small_bitmaps)
846 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_4,*tmp_bitmap_8;
847 int width_1, height_1, width_2, height_2, width_4, height_4, width_8,height_8;
848 int new_width, new_height;
850 /* calculate new image dimensions for normal sized image */
851 width_1 = old_bitmap->width * zoom_factor;
852 height_1 = old_bitmap->height * zoom_factor;
854 /* get image with normal size (this might require scaling up) */
855 if (zoom_factor != 1)
856 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
858 tmp_bitmap_1 = old_bitmap;
860 /* this is only needed to make compilers happy */
861 tmp_bitmap_2 = tmp_bitmap_4 = tmp_bitmap_8 = NULL;
863 if (create_small_bitmaps)
865 /* calculate new image dimensions for small images */
866 width_2 = width_1 / 2;
867 height_2 = height_1 / 2;
868 width_4 = width_1 / 4;
869 height_4 = height_1 / 4;
870 width_8 = width_1 / 8;
871 height_8 = height_1 / 8;
873 /* get image with 1/2 of normal size (for use in the level editor) */
874 if (zoom_factor != 2)
875 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
877 tmp_bitmap_2 = old_bitmap;
879 /* get image with 1/4 of normal size (for use in the level editor) */
880 if (zoom_factor != 4)
881 tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
883 tmp_bitmap_4 = old_bitmap;
885 /* get image with 1/8 of normal size (for use on the preview screen) */
886 if (zoom_factor != 8)
887 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
889 tmp_bitmap_8 = old_bitmap;
892 /* if image was scaled up, create new clipmask for normal size image */
893 if (zoom_factor != 1)
895 #if defined(TARGET_X11)
896 if (old_bitmap->clip_mask)
897 XFreePixmap(display, old_bitmap->clip_mask);
899 old_bitmap->clip_mask =
900 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
902 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
904 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
906 if (old_bitmap->surface_masked)
907 SDL_FreeSurface(old_bitmap->surface_masked);
909 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
910 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
911 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
912 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
913 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
917 if (create_small_bitmaps)
920 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
922 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
924 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
925 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
927 BlitBitmap(tmp_bitmap_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
928 width_1 / 2, height_1);
929 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
930 3 * width_1 / 4, height_1);
935 new_height = height_1;
937 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
940 if (create_small_bitmaps)
942 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
943 if (zoom_factor != 1)
944 FreeBitmap(tmp_bitmap_1);
946 if (zoom_factor != 2)
947 FreeBitmap(tmp_bitmap_2);
949 if (zoom_factor != 4)
950 FreeBitmap(tmp_bitmap_4);
952 if (zoom_factor != 8)
953 FreeBitmap(tmp_bitmap_8);
956 /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
957 #if defined(TARGET_SDL)
958 swap_bitmap.surface = old_bitmap->surface;
959 old_bitmap->surface = new_bitmap->surface;
960 new_bitmap->surface = swap_bitmap.surface;
962 swap_bitmap.drawable = old_bitmap->drawable;
963 old_bitmap->drawable = new_bitmap->drawable;
964 new_bitmap->drawable = swap_bitmap.drawable;
967 old_bitmap->width = new_bitmap->width;
968 old_bitmap->height = new_bitmap->height;
970 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
973 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
975 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
978 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
980 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
984 /* ------------------------------------------------------------------------- */
985 /* mouse pointer functions */
986 /* ------------------------------------------------------------------------- */
988 #if !defined(PLATFORM_MSDOS)
990 static const char *cursor_image_playfield[] =
992 /* width height num_colors chars_per_pixel */
1001 /* some people complained about a "white dot" on the screen and thought it
1002 was a graphical error... OK, let's just remove the whole pointer :-) */
1050 #if defined(TARGET_SDL)
1051 static const int cursor_bit_order = BIT_ORDER_MSB;
1052 #elif defined(TARGET_X11_NATIVE)
1053 static const int cursor_bit_order = BIT_ORDER_LSB;
1056 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1058 struct MouseCursorInfo *cursor;
1059 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1060 int header_lines = 4;
1063 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1065 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1068 for (y = 0; y < cursor->width; y++)
1070 for (x = 0; x < cursor->height; x++)
1073 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1078 cursor->data[i] = cursor->mask[i] = 0;
1081 switch (image[header_lines + y][x])
1084 cursor->data[i] |= bit_mask;
1085 cursor->mask[i] |= bit_mask;
1089 cursor->mask[i] |= bit_mask;
1098 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1102 #endif /* !PLATFORM_MSDOS */
1104 void SetMouseCursor(int mode)
1106 #if !defined(PLATFORM_MSDOS)
1107 static struct MouseCursorInfo *cursor_playfield = NULL;
1109 if (cursor_playfield == NULL)
1110 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1112 #if defined(TARGET_SDL)
1113 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1114 #elif defined(TARGET_X11_NATIVE)
1115 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1121 /* ========================================================================= */
1122 /* audio functions */
1123 /* ========================================================================= */
1125 void OpenAudio(void)
1127 /* always start with reliable default values */
1128 audio.sound_available = FALSE;
1129 audio.music_available = FALSE;
1130 audio.loops_available = FALSE;
1132 audio.sound_enabled = FALSE;
1133 audio.sound_deactivated = FALSE;
1135 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1136 audio.mixer_pid = 0;
1137 audio.device_name = NULL;
1138 audio.device_fd = -1;
1140 audio.num_channels = 0;
1141 audio.music_channel = 0;
1142 audio.first_sound_channel = 0;
1144 #if defined(TARGET_SDL)
1146 #elif defined(PLATFORM_UNIX)
1148 #elif defined(PLATFORM_MSDOS)
1153 void CloseAudio(void)
1155 #if defined(TARGET_SDL)
1157 #elif defined(PLATFORM_UNIX)
1159 #elif defined(PLATFORM_MSDOS)
1163 audio.sound_enabled = FALSE;
1166 void SetAudioMode(boolean enabled)
1168 if (!audio.sound_available)
1171 audio.sound_enabled = enabled;
1175 /* ========================================================================= */
1176 /* event functions */
1177 /* ========================================================================= */
1179 void InitEventFilter(EventFilter filter_function)
1181 #if defined(TARGET_SDL)
1182 /* set event filter to filter out certain events */
1183 SDL_SetEventFilter(filter_function);
1187 boolean PendingEvent(void)
1189 #if defined(TARGET_SDL)
1190 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1192 return (XPending(display) ? TRUE : FALSE);
1196 void NextEvent(Event *event)
1198 #if defined(TARGET_SDL)
1199 SDLNextEvent(event);
1201 XNextEvent(display, event);
1205 void PeekEvent(Event *event)
1207 #if defined(TARGET_SDL)
1208 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1210 XPeekEvent(display, event);
1214 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1216 #if defined(TARGET_SDL)
1219 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1220 (int)event->keysym.unicode,
1221 (int)event->keysym.sym,
1222 (int)SDL_GetModState());
1225 if (with_modifiers &&
1226 event->keysym.unicode > 0x0000 &&
1227 event->keysym.unicode < 0x2000)
1228 return event->keysym.unicode;
1230 return event->keysym.sym;
1235 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1236 (int)XLookupKeysym(event, event->state),
1237 (int)XLookupKeysym(event, 0));
1241 return XLookupKeysym(event, event->state);
1243 return XLookupKeysym(event, 0);
1247 KeyMod HandleKeyModState(Key key, int key_status)
1249 static KeyMod current_modifiers = KMOD_None;
1251 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1253 KeyMod new_modifier = KMOD_None;
1258 new_modifier = KMOD_Shift_L;
1261 new_modifier = KMOD_Shift_R;
1263 case KSYM_Control_L:
1264 new_modifier = KMOD_Control_L;
1266 case KSYM_Control_R:
1267 new_modifier = KMOD_Control_R;
1270 new_modifier = KMOD_Meta_L;
1273 new_modifier = KMOD_Meta_R;
1276 new_modifier = KMOD_Alt_L;
1279 new_modifier = KMOD_Alt_R;
1285 if (key_status == KEY_PRESSED)
1286 current_modifiers |= new_modifier;
1288 current_modifiers &= ~new_modifier;
1291 return current_modifiers;
1294 KeyMod GetKeyModState()
1296 #if defined(TARGET_SDL)
1297 return (KeyMod)SDL_GetModState();
1299 return HandleKeyModState(KSYM_UNDEFINED, 0);
1303 KeyMod GetKeyModStateFromEvents()
1305 /* always use key modifier state as tracked from key events (this is needed
1306 if the modifier key event was injected into the event queue, but the key
1307 was not really pressed on keyboard -- SDL_GetModState() seems to directly
1308 query the keys as held pressed on the keyboard) -- this case is currently
1309 only used to filter out clipboard insert events from "True X-Mouse" tool */
1311 return HandleKeyModState(KSYM_UNDEFINED, 0);
1314 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1316 if (event->type != EVENT_CLIENTMESSAGE)
1319 #if defined(TARGET_SDL)
1320 return TRUE; /* the only possible message here is SDL_QUIT */
1321 #elif defined(PLATFORM_UNIX)
1322 if ((event->window == window->drawable) &&
1323 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1331 /* ========================================================================= */
1332 /* joystick functions */
1333 /* ========================================================================= */
1335 void InitJoysticks()
1339 #if defined(NO_JOYSTICK)
1340 return; /* joysticks generally deactivated by compile-time directive */
1343 /* always start with reliable default values */
1344 joystick.status = JOYSTICK_NOT_AVAILABLE;
1345 for (i = 0; i < MAX_PLAYERS; i++)
1346 joystick.fd[i] = -1; /* joystick device closed */
1348 #if defined(TARGET_SDL)
1350 #elif defined(PLATFORM_UNIX)
1351 UnixInitJoysticks();
1352 #elif defined(PLATFORM_MSDOS)
1353 MSDOSInitJoysticks();
1357 for (i = 0; i < MAX_PLAYERS; i++)
1358 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1362 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1364 #if defined(TARGET_SDL)
1365 return SDLReadJoystick(nr, x, y, b1, b2);
1366 #elif defined(PLATFORM_UNIX)
1367 return UnixReadJoystick(nr, x, y, b1, b2);
1368 #elif defined(PLATFORM_MSDOS)
1369 return MSDOSReadJoystick(nr, x, y, b1, b2);