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)
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 *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.msdos_cursor_filename = msdos_cursor_filename;
94 program.cookie_prefix = cookie_prefix;
95 program.filename_prefix = filename_prefix;
97 program.version_major = VERSION_MAJOR(program_version);
98 program.version_minor = VERSION_MINOR(program_version);
99 program.version_patch = VERSION_PATCH(program_version);
101 program.error_filename = getErrorFilename(ERROR_BASENAME);
102 program.error_file = stderr;
105 void InitExitFunction(void (*exit_function)(int))
107 program.exit_function = exit_function;
109 /* set signal handlers to custom exit function */
110 signal(SIGINT, exit_function);
111 signal(SIGTERM, exit_function);
113 #if defined(TARGET_SDL)
114 /* set exit function to automatically cleanup SDL stuff after exit() */
119 void InitPlatformDependentStuff(void)
121 #if defined(PLATFORM_MSDOS)
125 #if defined(PLATFORM_MACOSX)
126 updateUserGameDataDir();
129 #if !defined(PLATFORM_UNIX) || defined(PLATFORM_MACOSX)
133 #if defined(TARGET_SDL)
134 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
135 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
141 void ClosePlatformDependentStuff(void)
143 #if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
147 #if defined(PLATFORM_MSDOS)
152 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
153 int real_sx, int real_sy,
154 int full_sxsize, int full_sysize,
155 Bitmap *field_save_buffer)
161 gfx.real_sx = real_sx;
162 gfx.real_sy = real_sy;
163 gfx.full_sxsize = full_sxsize;
164 gfx.full_sysize = full_sysize;
166 gfx.field_save_buffer = field_save_buffer;
168 gfx.background_bitmap = NULL;
169 gfx.background_bitmap_mask = REDRAW_NONE;
171 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
172 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
175 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
183 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
191 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
193 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
194 gfx.scrollbuffer_width = scrollbuffer_width;
195 gfx.scrollbuffer_height = scrollbuffer_height;
198 void SetDrawDeactivationMask(int draw_deactivation_mask)
200 gfx.draw_deactivation_mask = draw_deactivation_mask;
203 void SetDrawBackgroundMask(int draw_background_mask)
205 gfx.draw_background_mask = draw_background_mask;
208 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
209 int dest_x, int dest_y, int width, int height)
211 int bitmap_xsize = width;
212 int bitmap_ysize = height;
213 int tile_xsize = tile->width;
214 int tile_ysize = tile->height;
215 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
216 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
219 for (y = 0; y < tile_ysteps; y++)
221 for (x = 0; x < tile_xsteps; x++)
223 int draw_x = dest_x + x * tile_xsize;
224 int draw_y = dest_y + y * tile_ysize;
225 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
226 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
228 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
233 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
235 if (background_bitmap_tile != NULL)
236 gfx.background_bitmap_mask |= mask;
238 gfx.background_bitmap_mask &= ~mask;
240 if (gfx.background_bitmap == NULL)
241 gfx.background_bitmap = CreateBitmap(video.width, video.height,
244 if (background_bitmap_tile == NULL) /* empty background requested */
247 if (mask == REDRAW_FIELD)
248 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
249 gfx.real_sx, gfx.real_sy,
250 gfx.full_sxsize, gfx.full_sysize);
251 else if (mask == REDRAW_DOOR_1)
253 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
255 gfx.dxsize, gfx.dysize);
259 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
261 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
264 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
266 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
270 /* ========================================================================= */
271 /* video functions */
272 /* ========================================================================= */
274 inline static int GetRealDepth(int depth)
276 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
279 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
280 int width, int height, Pixel color)
282 #if defined(TARGET_SDL)
283 SDLFillRectangle(bitmap, x, y, width, height, color);
285 X11FillRectangle(bitmap, x, y, width, height, color);
289 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
290 int src_x, int src_y, int width, int height,
291 int dst_x, int dst_y, int mask_mode)
293 #if defined(TARGET_SDL)
294 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
295 dst_x, dst_y, mask_mode);
297 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
298 dst_x, dst_y, mask_mode);
302 void InitVideoDisplay(void)
304 #if defined(TARGET_SDL)
305 SDLInitVideoDisplay();
307 X11InitVideoDisplay();
311 void CloseVideoDisplay(void)
313 KeyboardAutoRepeatOn();
315 #if defined(TARGET_SDL)
316 SDL_QuitSubSystem(SDL_INIT_VIDEO);
319 XCloseDisplay(display);
323 void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
324 int width, int height, int depth, boolean fullscreen)
327 video.height = height;
328 video.depth = GetRealDepth(depth);
329 video.fullscreen_available = FULLSCREEN_STATUS;
330 video.fullscreen_enabled = FALSE;
331 video.fullscreen_modes = NULL;
332 video.fullscreen_mode_current = NULL;
334 #if defined(TARGET_SDL)
335 SDLInitVideoBuffer(backbuffer, window, fullscreen);
337 X11InitVideoBuffer(backbuffer, window);
341 Bitmap *CreateBitmapStruct(void)
343 #if defined(TARGET_SDL)
344 return checked_calloc(sizeof(struct SDLSurfaceInfo));
346 return checked_calloc(sizeof(struct X11DrawableInfo));
350 Bitmap *CreateBitmap(int width, int height, int depth)
352 Bitmap *new_bitmap = CreateBitmapStruct();
353 int real_depth = GetRealDepth(depth);
355 #if defined(TARGET_SDL)
356 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
358 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
361 new_bitmap->width = width;
362 new_bitmap->height = height;
367 inline static void FreeBitmapPointers(Bitmap *bitmap)
372 #if defined(TARGET_SDL)
373 SDLFreeBitmapPointers(bitmap);
375 X11FreeBitmapPointers(bitmap);
378 checked_free(bitmap->source_filename);
379 bitmap->source_filename = NULL;
382 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
385 if (src_bitmap == NULL || dst_bitmap == NULL)
388 FreeBitmapPointers(dst_bitmap);
390 *dst_bitmap = *src_bitmap;
393 void FreeBitmap(Bitmap *bitmap)
398 FreeBitmapPointers(bitmap);
403 void CloseWindow(DrawWindow *window)
405 #if defined(TARGET_X11)
406 if (window->drawable)
408 XUnmapWindow(display, window->drawable);
409 XDestroyWindow(display, window->drawable);
412 XFreeGC(display, window->gc);
416 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
419 if (draw_mask == REDRAW_NONE)
422 if (draw_mask & REDRAW_ALL)
425 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
428 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
431 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
437 boolean DrawingDeactivated(int x, int y, int width, int height)
439 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
442 boolean DrawingOnBackground(int x, int y)
444 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
445 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
448 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
449 int src_x, int src_y, int width, int height,
450 int dst_x, int dst_y)
452 if (DrawingDeactivated(dst_x, dst_y, width, height))
455 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
456 dst_x, dst_y, BLIT_OPAQUE);
459 void FadeScreen(Bitmap *bitmap_cross, int fade_mode, int fade_delay,
462 #if defined(TARGET_SDL)
463 SDLFadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
465 X11FadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
469 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
472 if (DrawingDeactivated(x, y, width, height))
475 sysFillRectangle(bitmap, x, y, width, height, color);
478 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
480 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
483 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
484 int width, int height)
486 if (DrawingOnBackground(x, y))
487 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
489 ClearRectangle(bitmap, x, y, width, height);
492 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
494 #if defined(TARGET_X11)
497 bitmap->clip_gc = clip_gc;
498 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
503 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
505 #if defined(TARGET_X11)
508 bitmap->clip_gc = clip_gc;
509 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
514 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
515 int src_x, int src_y, int width, int height,
516 int dst_x, int dst_y)
518 if (DrawingDeactivated(dst_x, dst_y, width, height))
521 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
522 dst_x, dst_y, BLIT_MASKED);
525 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
526 int src_x, int src_y, int width, int height,
527 int dst_x, int dst_y)
529 if (DrawingOnBackground(dst_x, dst_y))
531 /* draw background */
532 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
535 /* draw foreground */
536 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
537 dst_x - src_x, dst_y - src_y);
538 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
542 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
546 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
549 #if defined(TARGET_SDL)
550 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
552 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
556 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
559 #if defined(TARGET_SDL)
560 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
562 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
566 #if !defined(TARGET_X11_NATIVE)
567 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
568 int to_x, int to_y, Pixel pixel, int line_width)
572 for (x = 0; x < line_width; x++)
574 for (y = 0; y < line_width; y++)
576 int dx = x - line_width / 2;
577 int dy = y - line_width / 2;
579 if ((x == 0 && y == 0) ||
580 (x == 0 && y == line_width - 1) ||
581 (x == line_width - 1 && y == 0) ||
582 (x == line_width - 1 && y == line_width - 1))
585 #if defined(TARGET_SDL)
587 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
588 #elif defined(TARGET_ALLEGRO)
589 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
590 to_x + dx, to_y + dy, pixel);
597 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
599 #if !defined(TARGET_X11_NATIVE)
603 for (i = 0; i < num_points - 1; i++)
604 DrawLine(bitmap, points[i].x, points[i].y,
605 points[i + 1].x, points[i + 1].y, pixel, line_width);
608 SDLDrawLines(bitmap->surface, points, num_points, pixel);
611 XSetForeground(display, bitmap->line_gc[1], pixel);
612 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
613 (XPoint *)points, num_points, CoordModeOrigin);
617 Pixel GetPixel(Bitmap *bitmap, int x, int y)
619 if (x < 0 || x >= bitmap->width ||
620 y < 0 || y >= bitmap->height)
623 #if defined(TARGET_SDL)
624 return SDLGetPixel(bitmap, x, y);
625 #elif defined(TARGET_ALLEGRO)
626 return AllegroGetPixel(bitmap->drawable, x, y);
628 return X11GetPixel(bitmap, x, y);
632 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
633 unsigned int color_g, unsigned int color_b)
635 #if defined(TARGET_SDL)
636 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
637 #elif defined(TARGET_ALLEGRO)
638 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
640 return X11GetPixelFromRGB(color_r, color_g, color_b);
644 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
646 unsigned int color_r = (color >> 16) & 0xff;
647 unsigned int color_g = (color >> 8) & 0xff;
648 unsigned int color_b = (color >> 0) & 0xff;
650 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
653 /* execute all pending screen drawing operations */
654 void FlushDisplay(void)
661 /* execute and wait for all pending screen drawing operations */
662 void SyncDisplay(void)
665 XSync(display, FALSE);
669 void KeyboardAutoRepeatOn(void)
671 #if defined(TARGET_SDL)
672 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
673 SDL_DEFAULT_REPEAT_INTERVAL / 2);
674 SDL_EnableUNICODE(1);
677 XAutoRepeatOn(display);
681 void KeyboardAutoRepeatOff(void)
683 #if defined(TARGET_SDL)
684 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
685 SDL_EnableUNICODE(0);
688 XAutoRepeatOff(display);
692 boolean PointerInWindow(DrawWindow *window)
694 #if defined(TARGET_SDL)
702 /* if XQueryPointer() returns False, the pointer
703 is not on the same screen as the specified window */
704 return XQueryPointer(display, window->drawable, &root, &child,
705 &root_x, &root_y, &win_x, &win_y, &mask);
709 boolean SetVideoMode(boolean fullscreen)
711 #if defined(TARGET_SDL)
712 return SDLSetVideoMode(&backbuffer, fullscreen);
714 boolean success = TRUE;
716 if (fullscreen && video.fullscreen_available)
718 Error(ERR_WARN, "fullscreen not available in X11 version");
720 /* display error message only once */
721 video.fullscreen_available = FALSE;
730 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
732 #if defined(TARGET_SDL)
733 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
734 (!fullscreen && video.fullscreen_enabled))
735 fullscreen = SetVideoMode(fullscreen);
741 Bitmap *LoadImage(char *filename)
745 #if defined(TARGET_SDL)
746 new_bitmap = SDLLoadImage(filename);
748 new_bitmap = X11LoadImage(filename);
752 new_bitmap->source_filename = getStringCopy(filename);
757 Bitmap *LoadCustomImage(char *basename)
759 char *filename = getCustomImageFilename(basename);
762 if (filename == NULL)
763 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
765 if ((new_bitmap = LoadImage(filename)) == NULL)
766 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
771 void ReloadCustomImage(Bitmap *bitmap, char *basename)
773 char *filename = getCustomImageFilename(basename);
776 if (filename == NULL) /* (should never happen) */
778 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
782 if (strEqual(filename, bitmap->source_filename))
784 /* The old and new image are the same (have the same filename and path).
785 This usually means that this image does not exist in this graphic set
786 and a fallback to the existing image is done. */
791 if ((new_bitmap = LoadImage(filename)) == NULL)
793 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
797 if (bitmap->width != new_bitmap->width ||
798 bitmap->height != new_bitmap->height)
800 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
802 FreeBitmap(new_bitmap);
806 TransferBitmapPointers(new_bitmap, bitmap);
810 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
812 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
814 #if defined(TARGET_SDL)
815 SDLZoomBitmap(src_bitmap, dst_bitmap);
817 X11ZoomBitmap(src_bitmap, dst_bitmap);
823 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
824 boolean create_small_bitmaps)
827 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_4,*tmp_bitmap_8;
828 int width_1, height_1, width_2, height_2, width_4, height_4, width_8,height_8;
829 int new_width, new_height;
831 /* calculate new image dimensions for normal sized image */
832 width_1 = old_bitmap->width * zoom_factor;
833 height_1 = old_bitmap->height * zoom_factor;
835 /* get image with normal size (this might require scaling up) */
836 if (zoom_factor != 1)
837 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
839 tmp_bitmap_1 = old_bitmap;
841 /* this is only needed to make compilers happy */
842 tmp_bitmap_2 = tmp_bitmap_4 = tmp_bitmap_8 = NULL;
844 if (create_small_bitmaps)
846 /* calculate new image dimensions for small images */
847 width_2 = width_1 / 2;
848 height_2 = height_1 / 2;
849 width_4 = width_1 / 4;
850 height_4 = height_1 / 4;
851 width_8 = width_1 / 8;
852 height_8 = height_1 / 8;
854 /* get image with 1/2 of normal size (for use in the level editor) */
855 if (zoom_factor != 2)
856 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
858 tmp_bitmap_2 = old_bitmap;
860 /* get image with 1/4 of normal size (for use in the level editor) */
861 if (zoom_factor != 4)
862 tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
864 tmp_bitmap_4 = old_bitmap;
866 /* get image with 1/8 of normal size (for use on the preview screen) */
867 if (zoom_factor != 8)
868 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
870 tmp_bitmap_8 = old_bitmap;
873 /* if image was scaled up, create new clipmask for normal size image */
874 if (zoom_factor != 1)
876 #if defined(TARGET_X11)
877 if (old_bitmap->clip_mask)
878 XFreePixmap(display, old_bitmap->clip_mask);
880 old_bitmap->clip_mask =
881 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
883 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
885 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
887 if (old_bitmap->surface_masked)
888 SDL_FreeSurface(old_bitmap->surface_masked);
890 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
891 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
892 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
893 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
894 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
898 if (create_small_bitmaps)
901 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
903 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
905 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
906 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
908 BlitBitmap(tmp_bitmap_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
909 width_1 / 2, height_1);
910 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
911 3 * width_1 / 4, height_1);
916 new_height = height_1;
918 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
921 if (create_small_bitmaps)
923 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
924 if (zoom_factor != 1)
925 FreeBitmap(tmp_bitmap_1);
927 if (zoom_factor != 2)
928 FreeBitmap(tmp_bitmap_2);
930 if (zoom_factor != 4)
931 FreeBitmap(tmp_bitmap_4);
933 if (zoom_factor != 8)
934 FreeBitmap(tmp_bitmap_8);
937 /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
938 #if defined(TARGET_SDL)
939 swap_bitmap.surface = old_bitmap->surface;
940 old_bitmap->surface = new_bitmap->surface;
941 new_bitmap->surface = swap_bitmap.surface;
943 swap_bitmap.drawable = old_bitmap->drawable;
944 old_bitmap->drawable = new_bitmap->drawable;
945 new_bitmap->drawable = swap_bitmap.drawable;
948 old_bitmap->width = new_bitmap->width;
949 old_bitmap->height = new_bitmap->height;
951 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
954 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
956 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
959 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
961 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
965 /* ------------------------------------------------------------------------- */
966 /* mouse pointer functions */
967 /* ------------------------------------------------------------------------- */
969 #if !defined(PLATFORM_MSDOS)
971 static const char *cursor_image_playfield[] =
973 /* width height num_colors chars_per_pixel */
982 /* some people complained about a "white dot" on the screen and thought it
983 was a graphical error... OK, let's just remove the whole pointer :-) */
1031 #if defined(TARGET_SDL)
1032 static const int cursor_bit_order = BIT_ORDER_MSB;
1033 #elif defined(TARGET_X11_NATIVE)
1034 static const int cursor_bit_order = BIT_ORDER_LSB;
1037 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1039 struct MouseCursorInfo *cursor;
1040 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1041 int header_lines = 4;
1044 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1046 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1049 for (y = 0; y < cursor->width; y++)
1051 for (x = 0; x < cursor->height; x++)
1054 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1059 cursor->data[i] = cursor->mask[i] = 0;
1062 switch (image[header_lines + y][x])
1065 cursor->data[i] |= bit_mask;
1066 cursor->mask[i] |= bit_mask;
1070 cursor->mask[i] |= bit_mask;
1079 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1083 #endif /* !PLATFORM_MSDOS */
1085 void SetMouseCursor(int mode)
1087 #if !defined(PLATFORM_MSDOS)
1088 static struct MouseCursorInfo *cursor_playfield = NULL;
1090 if (cursor_playfield == NULL)
1091 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1093 #if defined(TARGET_SDL)
1094 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1095 #elif defined(TARGET_X11_NATIVE)
1096 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1102 /* ========================================================================= */
1103 /* audio functions */
1104 /* ========================================================================= */
1106 void OpenAudio(void)
1108 /* always start with reliable default values */
1109 audio.sound_available = FALSE;
1110 audio.music_available = FALSE;
1111 audio.loops_available = FALSE;
1113 audio.sound_enabled = FALSE;
1114 audio.sound_deactivated = FALSE;
1116 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1117 audio.mixer_pid = 0;
1118 audio.device_name = NULL;
1119 audio.device_fd = -1;
1121 audio.num_channels = 0;
1122 audio.music_channel = 0;
1123 audio.first_sound_channel = 0;
1125 #if defined(TARGET_SDL)
1127 #elif defined(PLATFORM_UNIX)
1129 #elif defined(PLATFORM_MSDOS)
1134 void CloseAudio(void)
1136 #if defined(TARGET_SDL)
1138 #elif defined(PLATFORM_UNIX)
1140 #elif defined(PLATFORM_MSDOS)
1144 audio.sound_enabled = FALSE;
1147 void SetAudioMode(boolean enabled)
1149 if (!audio.sound_available)
1152 audio.sound_enabled = enabled;
1156 /* ========================================================================= */
1157 /* event functions */
1158 /* ========================================================================= */
1160 void InitEventFilter(EventFilter filter_function)
1162 #if defined(TARGET_SDL)
1163 /* set event filter to filter out certain events */
1164 SDL_SetEventFilter(filter_function);
1168 boolean PendingEvent(void)
1170 #if defined(TARGET_SDL)
1171 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1173 return (XPending(display) ? TRUE : FALSE);
1177 void NextEvent(Event *event)
1179 #if defined(TARGET_SDL)
1180 SDLNextEvent(event);
1182 XNextEvent(display, event);
1186 void PeekEvent(Event *event)
1188 #if defined(TARGET_SDL)
1189 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1191 XPeekEvent(display, event);
1195 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1197 #if defined(TARGET_SDL)
1200 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1201 (int)event->keysym.unicode,
1202 (int)event->keysym.sym,
1203 (int)SDL_GetModState());
1206 if (with_modifiers &&
1207 event->keysym.unicode > 0x0000 &&
1208 event->keysym.unicode < 0x2000)
1209 return event->keysym.unicode;
1211 return event->keysym.sym;
1216 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1217 (int)XLookupKeysym(event, event->state),
1218 (int)XLookupKeysym(event, 0));
1222 return XLookupKeysym(event, event->state);
1224 return XLookupKeysym(event, 0);
1228 KeyMod HandleKeyModState(Key key, int key_status)
1230 static KeyMod current_modifiers = KMOD_None;
1232 #if !defined(TARGET_SDL)
1233 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1235 KeyMod new_modifier = KMOD_None;
1240 new_modifier = KMOD_Shift_L;
1243 new_modifier = KMOD_Shift_R;
1245 case KSYM_Control_L:
1246 new_modifier = KMOD_Control_L;
1248 case KSYM_Control_R:
1249 new_modifier = KMOD_Control_R;
1252 new_modifier = KMOD_Meta_L;
1255 new_modifier = KMOD_Meta_R;
1258 new_modifier = KMOD_Alt_L;
1261 new_modifier = KMOD_Alt_R;
1267 if (key_status == KEY_PRESSED)
1268 current_modifiers |= new_modifier;
1270 current_modifiers &= ~new_modifier;
1274 return current_modifiers;
1277 KeyMod GetKeyModState()
1279 #if defined(TARGET_SDL)
1280 return (KeyMod)SDL_GetModState();
1282 return HandleKeyModState(KSYM_UNDEFINED, 0);
1286 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1288 if (event->type != EVENT_CLIENTMESSAGE)
1291 #if defined(TARGET_SDL)
1292 return TRUE; /* the only possible message here is SDL_QUIT */
1293 #elif defined(PLATFORM_UNIX)
1294 if ((event->window == window->drawable) &&
1295 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1303 /* ========================================================================= */
1304 /* joystick functions */
1305 /* ========================================================================= */
1307 void InitJoysticks()
1311 #if defined(NO_JOYSTICK)
1312 return; /* joysticks generally deactivated by compile-time directive */
1315 /* always start with reliable default values */
1316 joystick.status = JOYSTICK_NOT_AVAILABLE;
1317 for (i = 0; i < MAX_PLAYERS; i++)
1318 joystick.fd[i] = -1; /* joystick device closed */
1320 #if defined(TARGET_SDL)
1322 #elif defined(PLATFORM_UNIX)
1323 UnixInitJoysticks();
1324 #elif defined(PLATFORM_MSDOS)
1325 MSDOSInitJoysticks();
1329 for (i = 0; i < MAX_PLAYERS; i++)
1330 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1334 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1336 #if defined(TARGET_SDL)
1337 return SDLReadJoystick(nr, x, y, b1, b2);
1338 #elif defined(PLATFORM_UNIX)
1339 return UnixReadJoystick(nr, x, y, b1, b2);
1340 #elif defined(PLATFORM_MSDOS)
1341 return MSDOSReadJoystick(nr, x, y, b1, b2);