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 fixUserGameDataDir();
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;
332 #if defined(TARGET_SDL)
333 SDLInitVideoBuffer(backbuffer, window, fullscreen);
335 X11InitVideoBuffer(backbuffer, window);
339 Bitmap *CreateBitmapStruct(void)
341 #if defined(TARGET_SDL)
342 return checked_calloc(sizeof(struct SDLSurfaceInfo));
344 return checked_calloc(sizeof(struct X11DrawableInfo));
348 Bitmap *CreateBitmap(int width, int height, int depth)
350 Bitmap *new_bitmap = CreateBitmapStruct();
351 int real_depth = GetRealDepth(depth);
353 #if defined(TARGET_SDL)
354 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
356 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
359 new_bitmap->width = width;
360 new_bitmap->height = height;
365 inline static void FreeBitmapPointers(Bitmap *bitmap)
370 #if defined(TARGET_SDL)
371 SDLFreeBitmapPointers(bitmap);
373 X11FreeBitmapPointers(bitmap);
376 checked_free(bitmap->source_filename);
377 bitmap->source_filename = NULL;
380 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
383 if (src_bitmap == NULL || dst_bitmap == NULL)
386 FreeBitmapPointers(dst_bitmap);
388 *dst_bitmap = *src_bitmap;
391 void FreeBitmap(Bitmap *bitmap)
396 FreeBitmapPointers(bitmap);
401 void CloseWindow(DrawWindow *window)
403 #if defined(TARGET_X11)
404 if (window->drawable)
406 XUnmapWindow(display, window->drawable);
407 XDestroyWindow(display, window->drawable);
410 XFreeGC(display, window->gc);
414 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
417 if (draw_mask == REDRAW_NONE)
420 if (draw_mask & REDRAW_ALL)
423 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
426 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
429 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
435 boolean DrawingDeactivated(int x, int y, int width, int height)
437 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
440 boolean DrawingOnBackground(int x, int y)
442 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
443 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
446 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
447 int src_x, int src_y, int width, int height,
448 int dst_x, int dst_y)
450 if (DrawingDeactivated(dst_x, dst_y, width, height))
453 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
454 dst_x, dst_y, BLIT_OPAQUE);
457 void FadeScreen(Bitmap *bitmap_cross, int fade_mode, int fade_delay,
460 #if defined(TARGET_SDL)
461 SDLFadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
463 X11FadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
467 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
470 if (DrawingDeactivated(x, y, width, height))
473 sysFillRectangle(bitmap, x, y, width, height, color);
476 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
478 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
481 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
482 int width, int height)
484 if (DrawingOnBackground(x, y))
485 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
487 ClearRectangle(bitmap, x, y, width, height);
490 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
492 #if defined(TARGET_X11)
495 bitmap->clip_gc = clip_gc;
496 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
501 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
503 #if defined(TARGET_X11)
506 bitmap->clip_gc = clip_gc;
507 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
512 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
513 int src_x, int src_y, int width, int height,
514 int dst_x, int dst_y)
516 if (DrawingDeactivated(dst_x, dst_y, width, height))
519 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
520 dst_x, dst_y, BLIT_MASKED);
523 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
524 int src_x, int src_y, int width, int height,
525 int dst_x, int dst_y)
527 if (DrawingOnBackground(dst_x, dst_y))
529 /* draw background */
530 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
533 /* draw foreground */
534 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
535 dst_x - src_x, dst_y - src_y);
536 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
540 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
544 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
547 #if defined(TARGET_SDL)
548 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
550 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
554 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
557 #if defined(TARGET_SDL)
558 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
560 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
564 #if !defined(TARGET_X11_NATIVE)
565 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
566 int to_x, int to_y, Pixel pixel, int line_width)
570 for (x = 0; x < line_width; x++)
572 for (y = 0; y < line_width; y++)
574 int dx = x - line_width / 2;
575 int dy = y - line_width / 2;
577 if ((x == 0 && y == 0) ||
578 (x == 0 && y == line_width - 1) ||
579 (x == line_width - 1 && y == 0) ||
580 (x == line_width - 1 && y == line_width - 1))
583 #if defined(TARGET_SDL)
585 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
586 #elif defined(TARGET_ALLEGRO)
587 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
588 to_x + dx, to_y + dy, pixel);
595 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
597 #if !defined(TARGET_X11_NATIVE)
601 for (i = 0; i < num_points - 1; i++)
602 DrawLine(bitmap, points[i].x, points[i].y,
603 points[i + 1].x, points[i + 1].y, pixel, line_width);
606 SDLDrawLines(bitmap->surface, points, num_points, pixel);
609 XSetForeground(display, bitmap->line_gc[1], pixel);
610 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
611 (XPoint *)points, num_points, CoordModeOrigin);
615 Pixel GetPixel(Bitmap *bitmap, int x, int y)
617 if (x < 0 || x >= bitmap->width ||
618 y < 0 || y >= bitmap->height)
621 #if defined(TARGET_SDL)
622 return SDLGetPixel(bitmap, x, y);
623 #elif defined(TARGET_ALLEGRO)
624 return AllegroGetPixel(bitmap->drawable, x, y);
626 return X11GetPixel(bitmap, x, y);
630 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
631 unsigned int color_g, unsigned int color_b)
633 #if defined(TARGET_SDL)
634 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
635 #elif defined(TARGET_ALLEGRO)
636 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
638 return X11GetPixelFromRGB(color_r, color_g, color_b);
642 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
644 unsigned int color_r = (color >> 16) & 0xff;
645 unsigned int color_g = (color >> 8) & 0xff;
646 unsigned int color_b = (color >> 0) & 0xff;
648 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
651 /* execute all pending screen drawing operations */
652 void FlushDisplay(void)
659 /* execute and wait for all pending screen drawing operations */
660 void SyncDisplay(void)
663 XSync(display, FALSE);
667 void KeyboardAutoRepeatOn(void)
669 #if defined(TARGET_SDL)
670 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
671 SDL_DEFAULT_REPEAT_INTERVAL / 2);
672 SDL_EnableUNICODE(1);
675 XAutoRepeatOn(display);
679 void KeyboardAutoRepeatOff(void)
681 #if defined(TARGET_SDL)
682 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
683 SDL_EnableUNICODE(0);
686 XAutoRepeatOff(display);
690 boolean PointerInWindow(DrawWindow *window)
692 #if defined(TARGET_SDL)
700 /* if XQueryPointer() returns False, the pointer
701 is not on the same screen as the specified window */
702 return XQueryPointer(display, window->drawable, &root, &child,
703 &root_x, &root_y, &win_x, &win_y, &mask);
707 boolean SetVideoMode(boolean fullscreen)
709 #if defined(TARGET_SDL)
710 return SDLSetVideoMode(&backbuffer, fullscreen);
712 boolean success = TRUE;
714 if (fullscreen && video.fullscreen_available)
716 Error(ERR_WARN, "fullscreen not available in X11 version");
718 /* display error message only once */
719 video.fullscreen_available = FALSE;
728 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
730 #if defined(TARGET_SDL)
731 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
732 (!fullscreen && video.fullscreen_enabled))
733 fullscreen = SetVideoMode(fullscreen);
739 Bitmap *LoadImage(char *filename)
743 #if defined(TARGET_SDL)
744 new_bitmap = SDLLoadImage(filename);
746 new_bitmap = X11LoadImage(filename);
750 new_bitmap->source_filename = getStringCopy(filename);
755 Bitmap *LoadCustomImage(char *basename)
757 char *filename = getCustomImageFilename(basename);
760 if (filename == NULL)
761 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
763 if ((new_bitmap = LoadImage(filename)) == NULL)
764 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
769 void ReloadCustomImage(Bitmap *bitmap, char *basename)
771 char *filename = getCustomImageFilename(basename);
774 if (filename == NULL) /* (should never happen) */
776 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
780 if (strEqual(filename, bitmap->source_filename))
782 /* The old and new image are the same (have the same filename and path).
783 This usually means that this image does not exist in this graphic set
784 and a fallback to the existing image is done. */
789 if ((new_bitmap = LoadImage(filename)) == NULL)
791 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
795 if (bitmap->width != new_bitmap->width ||
796 bitmap->height != new_bitmap->height)
798 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
800 FreeBitmap(new_bitmap);
804 TransferBitmapPointers(new_bitmap, bitmap);
808 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
810 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
812 #if defined(TARGET_SDL)
813 SDLZoomBitmap(src_bitmap, dst_bitmap);
815 X11ZoomBitmap(src_bitmap, dst_bitmap);
821 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
822 boolean create_small_bitmaps)
825 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_4,*tmp_bitmap_8;
826 int width_1, height_1, width_2, height_2, width_4, height_4, width_8,height_8;
827 int new_width, new_height;
829 /* calculate new image dimensions for normal sized image */
830 width_1 = old_bitmap->width * zoom_factor;
831 height_1 = old_bitmap->height * zoom_factor;
833 /* get image with normal size (this might require scaling up) */
834 if (zoom_factor != 1)
835 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
837 tmp_bitmap_1 = old_bitmap;
839 /* this is only needed to make compilers happy */
840 tmp_bitmap_2 = tmp_bitmap_4 = tmp_bitmap_8 = NULL;
842 if (create_small_bitmaps)
844 /* calculate new image dimensions for small images */
845 width_2 = width_1 / 2;
846 height_2 = height_1 / 2;
847 width_4 = width_1 / 4;
848 height_4 = height_1 / 4;
849 width_8 = width_1 / 8;
850 height_8 = height_1 / 8;
852 /* get image with 1/2 of normal size (for use in the level editor) */
853 if (zoom_factor != 2)
854 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
856 tmp_bitmap_2 = old_bitmap;
858 /* get image with 1/4 of normal size (for use in the level editor) */
859 if (zoom_factor != 4)
860 tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
862 tmp_bitmap_4 = old_bitmap;
864 /* get image with 1/8 of normal size (for use on the preview screen) */
865 if (zoom_factor != 8)
866 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
868 tmp_bitmap_8 = old_bitmap;
871 /* if image was scaled up, create new clipmask for normal size image */
872 if (zoom_factor != 1)
874 #if defined(TARGET_X11)
875 if (old_bitmap->clip_mask)
876 XFreePixmap(display, old_bitmap->clip_mask);
878 old_bitmap->clip_mask =
879 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
881 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
883 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
885 if (old_bitmap->surface_masked)
886 SDL_FreeSurface(old_bitmap->surface_masked);
888 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
889 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
890 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
891 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
892 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
896 if (create_small_bitmaps)
899 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
901 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
903 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
904 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
906 BlitBitmap(tmp_bitmap_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
907 width_1 / 2, height_1);
908 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
909 3 * width_1 / 4, height_1);
914 new_height = height_1;
916 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
919 if (create_small_bitmaps)
921 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
922 if (zoom_factor != 1)
923 FreeBitmap(tmp_bitmap_1);
925 if (zoom_factor != 2)
926 FreeBitmap(tmp_bitmap_2);
928 if (zoom_factor != 4)
929 FreeBitmap(tmp_bitmap_4);
931 if (zoom_factor != 8)
932 FreeBitmap(tmp_bitmap_8);
935 /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
936 #if defined(TARGET_SDL)
937 swap_bitmap.surface = old_bitmap->surface;
938 old_bitmap->surface = new_bitmap->surface;
939 new_bitmap->surface = swap_bitmap.surface;
941 swap_bitmap.drawable = old_bitmap->drawable;
942 old_bitmap->drawable = new_bitmap->drawable;
943 new_bitmap->drawable = swap_bitmap.drawable;
946 old_bitmap->width = new_bitmap->width;
947 old_bitmap->height = new_bitmap->height;
949 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
952 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
954 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
957 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
959 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
963 /* ------------------------------------------------------------------------- */
964 /* mouse pointer functions */
965 /* ------------------------------------------------------------------------- */
967 #if !defined(PLATFORM_MSDOS)
969 static const char *cursor_image_playfield[] =
971 /* width height num_colors chars_per_pixel */
980 /* some people complained about a "white dot" on the screen and thought it
981 was a graphical error... OK, let's just remove the whole pointer :-) */
1029 #if defined(TARGET_SDL)
1030 static const int cursor_bit_order = BIT_ORDER_MSB;
1031 #elif defined(TARGET_X11_NATIVE)
1032 static const int cursor_bit_order = BIT_ORDER_LSB;
1035 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1037 struct MouseCursorInfo *cursor;
1038 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1039 int header_lines = 4;
1042 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1044 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1047 for (y = 0; y < cursor->width; y++)
1049 for (x = 0; x < cursor->height; x++)
1052 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1057 cursor->data[i] = cursor->mask[i] = 0;
1060 switch (image[header_lines + y][x])
1063 cursor->data[i] |= bit_mask;
1064 cursor->mask[i] |= bit_mask;
1068 cursor->mask[i] |= bit_mask;
1077 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1081 #endif /* !PLATFORM_MSDOS */
1083 void SetMouseCursor(int mode)
1085 #if !defined(PLATFORM_MSDOS)
1086 static struct MouseCursorInfo *cursor_playfield = NULL;
1088 if (cursor_playfield == NULL)
1089 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1091 #if defined(TARGET_SDL)
1092 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1093 #elif defined(TARGET_X11_NATIVE)
1094 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1100 /* ========================================================================= */
1101 /* audio functions */
1102 /* ========================================================================= */
1104 void OpenAudio(void)
1106 /* always start with reliable default values */
1107 audio.sound_available = FALSE;
1108 audio.music_available = FALSE;
1109 audio.loops_available = FALSE;
1111 audio.sound_enabled = FALSE;
1112 audio.sound_deactivated = FALSE;
1114 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1115 audio.mixer_pid = 0;
1116 audio.device_name = NULL;
1117 audio.device_fd = -1;
1119 audio.num_channels = 0;
1120 audio.music_channel = 0;
1121 audio.first_sound_channel = 0;
1123 #if defined(TARGET_SDL)
1125 #elif defined(PLATFORM_UNIX)
1127 #elif defined(PLATFORM_MSDOS)
1132 void CloseAudio(void)
1134 #if defined(TARGET_SDL)
1136 #elif defined(PLATFORM_UNIX)
1138 #elif defined(PLATFORM_MSDOS)
1142 audio.sound_enabled = FALSE;
1145 void SetAudioMode(boolean enabled)
1147 if (!audio.sound_available)
1150 audio.sound_enabled = enabled;
1154 /* ========================================================================= */
1155 /* event functions */
1156 /* ========================================================================= */
1158 void InitEventFilter(EventFilter filter_function)
1160 #if defined(TARGET_SDL)
1161 /* set event filter to filter out certain events */
1162 SDL_SetEventFilter(filter_function);
1166 boolean PendingEvent(void)
1168 #if defined(TARGET_SDL)
1169 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1171 return (XPending(display) ? TRUE : FALSE);
1175 void NextEvent(Event *event)
1177 #if defined(TARGET_SDL)
1178 SDLNextEvent(event);
1180 XNextEvent(display, event);
1184 void PeekEvent(Event *event)
1186 #if defined(TARGET_SDL)
1187 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1189 XPeekEvent(display, event);
1193 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1195 #if defined(TARGET_SDL)
1198 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1199 (int)event->keysym.unicode,
1200 (int)event->keysym.sym,
1201 (int)SDL_GetModState());
1204 if (with_modifiers &&
1205 event->keysym.unicode > 0x0000 &&
1206 event->keysym.unicode < 0x2000)
1207 return event->keysym.unicode;
1209 return event->keysym.sym;
1214 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1215 (int)XLookupKeysym(event, event->state),
1216 (int)XLookupKeysym(event, 0));
1220 return XLookupKeysym(event, event->state);
1222 return XLookupKeysym(event, 0);
1226 KeyMod HandleKeyModState(Key key, int key_status)
1228 static KeyMod current_modifiers = KMOD_None;
1230 #if !defined(TARGET_SDL)
1231 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1233 KeyMod new_modifier = KMOD_None;
1238 new_modifier = KMOD_Shift_L;
1241 new_modifier = KMOD_Shift_R;
1243 case KSYM_Control_L:
1244 new_modifier = KMOD_Control_L;
1246 case KSYM_Control_R:
1247 new_modifier = KMOD_Control_R;
1250 new_modifier = KMOD_Meta_L;
1253 new_modifier = KMOD_Meta_R;
1256 new_modifier = KMOD_Alt_L;
1259 new_modifier = KMOD_Alt_R;
1265 if (key_status == KEY_PRESSED)
1266 current_modifiers |= new_modifier;
1268 current_modifiers &= ~new_modifier;
1272 return current_modifiers;
1275 KeyMod GetKeyModState()
1277 #if defined(TARGET_SDL)
1278 return (KeyMod)SDL_GetModState();
1280 return HandleKeyModState(KSYM_UNDEFINED, 0);
1284 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1286 if (event->type != EVENT_CLIENTMESSAGE)
1289 #if defined(TARGET_SDL)
1290 return TRUE; /* the only possible message here is SDL_QUIT */
1291 #elif defined(PLATFORM_UNIX)
1292 if ((event->window == window->drawable) &&
1293 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1301 /* ========================================================================= */
1302 /* joystick functions */
1303 /* ========================================================================= */
1305 void InitJoysticks()
1309 #if defined(NO_JOYSTICK)
1310 return; /* joysticks generally deactivated by compile-time directive */
1313 /* always start with reliable default values */
1314 joystick.status = JOYSTICK_NOT_AVAILABLE;
1315 for (i = 0; i < MAX_PLAYERS; i++)
1316 joystick.fd[i] = -1; /* joystick device closed */
1318 #if defined(TARGET_SDL)
1320 #elif defined(PLATFORM_UNIX)
1321 UnixInitJoysticks();
1322 #elif defined(PLATFORM_MSDOS)
1323 MSDOSInitJoysticks();
1327 for (i = 0; i < MAX_PLAYERS; i++)
1328 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1332 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1334 #if defined(TARGET_SDL)
1335 return SDLReadJoystick(nr, x, y, b1, b2);
1336 #elif defined(PLATFORM_UNIX)
1337 return UnixReadJoystick(nr, x, y, b1, b2);
1338 #elif defined(PLATFORM_MSDOS)
1339 return MSDOSReadJoystick(nr, x, y, b1, b2);