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;
333 #if defined(TARGET_SDL)
334 SDLInitVideoBuffer(backbuffer, window, fullscreen);
336 X11InitVideoBuffer(backbuffer, window);
340 Bitmap *CreateBitmapStruct(void)
342 #if defined(TARGET_SDL)
343 return checked_calloc(sizeof(struct SDLSurfaceInfo));
345 return checked_calloc(sizeof(struct X11DrawableInfo));
349 Bitmap *CreateBitmap(int width, int height, int depth)
351 Bitmap *new_bitmap = CreateBitmapStruct();
352 int real_depth = GetRealDepth(depth);
354 #if defined(TARGET_SDL)
355 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
357 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
360 new_bitmap->width = width;
361 new_bitmap->height = height;
366 inline static void FreeBitmapPointers(Bitmap *bitmap)
371 #if defined(TARGET_SDL)
372 SDLFreeBitmapPointers(bitmap);
374 X11FreeBitmapPointers(bitmap);
377 checked_free(bitmap->source_filename);
378 bitmap->source_filename = NULL;
381 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
384 if (src_bitmap == NULL || dst_bitmap == NULL)
387 FreeBitmapPointers(dst_bitmap);
389 *dst_bitmap = *src_bitmap;
392 void FreeBitmap(Bitmap *bitmap)
397 FreeBitmapPointers(bitmap);
402 void CloseWindow(DrawWindow *window)
404 #if defined(TARGET_X11)
405 if (window->drawable)
407 XUnmapWindow(display, window->drawable);
408 XDestroyWindow(display, window->drawable);
411 XFreeGC(display, window->gc);
415 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
418 if (draw_mask == REDRAW_NONE)
421 if (draw_mask & REDRAW_ALL)
424 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
427 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
430 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
436 boolean DrawingDeactivated(int x, int y, int width, int height)
438 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
441 boolean DrawingOnBackground(int x, int y)
443 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
444 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
447 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
448 int src_x, int src_y, int width, int height,
449 int dst_x, int dst_y)
451 if (DrawingDeactivated(dst_x, dst_y, width, height))
454 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
455 dst_x, dst_y, BLIT_OPAQUE);
458 void FadeScreen(Bitmap *bitmap_cross, int fade_mode, int fade_delay,
461 #if defined(TARGET_SDL)
462 SDLFadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
464 X11FadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
468 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
471 if (DrawingDeactivated(x, y, width, height))
474 sysFillRectangle(bitmap, x, y, width, height, color);
477 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
479 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
482 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
483 int width, int height)
485 if (DrawingOnBackground(x, y))
486 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
488 ClearRectangle(bitmap, x, y, width, height);
491 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
493 #if defined(TARGET_X11)
496 bitmap->clip_gc = clip_gc;
497 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
502 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
504 #if defined(TARGET_X11)
507 bitmap->clip_gc = clip_gc;
508 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
513 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
514 int src_x, int src_y, int width, int height,
515 int dst_x, int dst_y)
517 if (DrawingDeactivated(dst_x, dst_y, width, height))
520 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
521 dst_x, dst_y, BLIT_MASKED);
524 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
525 int src_x, int src_y, int width, int height,
526 int dst_x, int dst_y)
528 if (DrawingOnBackground(dst_x, dst_y))
530 /* draw background */
531 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
534 /* draw foreground */
535 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
536 dst_x - src_x, dst_y - src_y);
537 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
541 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
545 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
548 #if defined(TARGET_SDL)
549 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
551 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
555 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
558 #if defined(TARGET_SDL)
559 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
561 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
565 #if !defined(TARGET_X11_NATIVE)
566 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
567 int to_x, int to_y, Pixel pixel, int line_width)
571 for (x = 0; x < line_width; x++)
573 for (y = 0; y < line_width; y++)
575 int dx = x - line_width / 2;
576 int dy = y - line_width / 2;
578 if ((x == 0 && y == 0) ||
579 (x == 0 && y == line_width - 1) ||
580 (x == line_width - 1 && y == 0) ||
581 (x == line_width - 1 && y == line_width - 1))
584 #if defined(TARGET_SDL)
586 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
587 #elif defined(TARGET_ALLEGRO)
588 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
589 to_x + dx, to_y + dy, pixel);
596 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
598 #if !defined(TARGET_X11_NATIVE)
602 for (i = 0; i < num_points - 1; i++)
603 DrawLine(bitmap, points[i].x, points[i].y,
604 points[i + 1].x, points[i + 1].y, pixel, line_width);
607 SDLDrawLines(bitmap->surface, points, num_points, pixel);
610 XSetForeground(display, bitmap->line_gc[1], pixel);
611 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
612 (XPoint *)points, num_points, CoordModeOrigin);
616 Pixel GetPixel(Bitmap *bitmap, int x, int y)
618 if (x < 0 || x >= bitmap->width ||
619 y < 0 || y >= bitmap->height)
622 #if defined(TARGET_SDL)
623 return SDLGetPixel(bitmap, x, y);
624 #elif defined(TARGET_ALLEGRO)
625 return AllegroGetPixel(bitmap->drawable, x, y);
627 return X11GetPixel(bitmap, x, y);
631 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
632 unsigned int color_g, unsigned int color_b)
634 #if defined(TARGET_SDL)
635 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
636 #elif defined(TARGET_ALLEGRO)
637 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
639 return X11GetPixelFromRGB(color_r, color_g, color_b);
643 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
645 unsigned int color_r = (color >> 16) & 0xff;
646 unsigned int color_g = (color >> 8) & 0xff;
647 unsigned int color_b = (color >> 0) & 0xff;
649 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
652 /* execute all pending screen drawing operations */
653 void FlushDisplay(void)
660 /* execute and wait for all pending screen drawing operations */
661 void SyncDisplay(void)
664 XSync(display, FALSE);
668 void KeyboardAutoRepeatOn(void)
670 #if defined(TARGET_SDL)
671 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
672 SDL_DEFAULT_REPEAT_INTERVAL / 2);
673 SDL_EnableUNICODE(1);
676 XAutoRepeatOn(display);
680 void KeyboardAutoRepeatOff(void)
682 #if defined(TARGET_SDL)
683 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
684 SDL_EnableUNICODE(0);
687 XAutoRepeatOff(display);
691 boolean PointerInWindow(DrawWindow *window)
693 #if defined(TARGET_SDL)
701 /* if XQueryPointer() returns False, the pointer
702 is not on the same screen as the specified window */
703 return XQueryPointer(display, window->drawable, &root, &child,
704 &root_x, &root_y, &win_x, &win_y, &mask);
708 boolean SetVideoMode(boolean fullscreen)
710 #if defined(TARGET_SDL)
711 return SDLSetVideoMode(&backbuffer, fullscreen);
713 boolean success = TRUE;
715 if (fullscreen && video.fullscreen_available)
717 Error(ERR_WARN, "fullscreen not available in X11 version");
719 /* display error message only once */
720 video.fullscreen_available = FALSE;
729 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
731 #if defined(TARGET_SDL)
732 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
733 (!fullscreen && video.fullscreen_enabled))
734 fullscreen = SetVideoMode(fullscreen);
740 Bitmap *LoadImage(char *filename)
744 #if defined(TARGET_SDL)
745 new_bitmap = SDLLoadImage(filename);
747 new_bitmap = X11LoadImage(filename);
751 new_bitmap->source_filename = getStringCopy(filename);
756 Bitmap *LoadCustomImage(char *basename)
758 char *filename = getCustomImageFilename(basename);
761 if (filename == NULL)
762 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
764 if ((new_bitmap = LoadImage(filename)) == NULL)
765 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
770 void ReloadCustomImage(Bitmap *bitmap, char *basename)
772 char *filename = getCustomImageFilename(basename);
775 if (filename == NULL) /* (should never happen) */
777 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
781 if (strEqual(filename, bitmap->source_filename))
783 /* The old and new image are the same (have the same filename and path).
784 This usually means that this image does not exist in this graphic set
785 and a fallback to the existing image is done. */
790 if ((new_bitmap = LoadImage(filename)) == NULL)
792 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
796 if (bitmap->width != new_bitmap->width ||
797 bitmap->height != new_bitmap->height)
799 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
801 FreeBitmap(new_bitmap);
805 TransferBitmapPointers(new_bitmap, bitmap);
809 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
811 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
813 #if defined(TARGET_SDL)
814 SDLZoomBitmap(src_bitmap, dst_bitmap);
816 X11ZoomBitmap(src_bitmap, dst_bitmap);
822 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
823 boolean create_small_bitmaps)
826 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_4,*tmp_bitmap_8;
827 int width_1, height_1, width_2, height_2, width_4, height_4, width_8,height_8;
828 int new_width, new_height;
830 /* calculate new image dimensions for normal sized image */
831 width_1 = old_bitmap->width * zoom_factor;
832 height_1 = old_bitmap->height * zoom_factor;
834 /* get image with normal size (this might require scaling up) */
835 if (zoom_factor != 1)
836 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
838 tmp_bitmap_1 = old_bitmap;
840 /* this is only needed to make compilers happy */
841 tmp_bitmap_2 = tmp_bitmap_4 = tmp_bitmap_8 = NULL;
843 if (create_small_bitmaps)
845 /* calculate new image dimensions for small images */
846 width_2 = width_1 / 2;
847 height_2 = height_1 / 2;
848 width_4 = width_1 / 4;
849 height_4 = height_1 / 4;
850 width_8 = width_1 / 8;
851 height_8 = height_1 / 8;
853 /* get image with 1/2 of normal size (for use in the level editor) */
854 if (zoom_factor != 2)
855 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
857 tmp_bitmap_2 = old_bitmap;
859 /* get image with 1/4 of normal size (for use in the level editor) */
860 if (zoom_factor != 4)
861 tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
863 tmp_bitmap_4 = old_bitmap;
865 /* get image with 1/8 of normal size (for use on the preview screen) */
866 if (zoom_factor != 8)
867 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
869 tmp_bitmap_8 = old_bitmap;
872 /* if image was scaled up, create new clipmask for normal size image */
873 if (zoom_factor != 1)
875 #if defined(TARGET_X11)
876 if (old_bitmap->clip_mask)
877 XFreePixmap(display, old_bitmap->clip_mask);
879 old_bitmap->clip_mask =
880 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
882 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
884 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
886 if (old_bitmap->surface_masked)
887 SDL_FreeSurface(old_bitmap->surface_masked);
889 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
890 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
891 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
892 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
893 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
897 if (create_small_bitmaps)
900 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
902 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
904 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
905 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
907 BlitBitmap(tmp_bitmap_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
908 width_1 / 2, height_1);
909 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
910 3 * width_1 / 4, height_1);
915 new_height = height_1;
917 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
920 if (create_small_bitmaps)
922 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
923 if (zoom_factor != 1)
924 FreeBitmap(tmp_bitmap_1);
926 if (zoom_factor != 2)
927 FreeBitmap(tmp_bitmap_2);
929 if (zoom_factor != 4)
930 FreeBitmap(tmp_bitmap_4);
932 if (zoom_factor != 8)
933 FreeBitmap(tmp_bitmap_8);
936 /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
937 #if defined(TARGET_SDL)
938 swap_bitmap.surface = old_bitmap->surface;
939 old_bitmap->surface = new_bitmap->surface;
940 new_bitmap->surface = swap_bitmap.surface;
942 swap_bitmap.drawable = old_bitmap->drawable;
943 old_bitmap->drawable = new_bitmap->drawable;
944 new_bitmap->drawable = swap_bitmap.drawable;
947 old_bitmap->width = new_bitmap->width;
948 old_bitmap->height = new_bitmap->height;
950 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
953 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
955 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
958 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
960 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
964 /* ------------------------------------------------------------------------- */
965 /* mouse pointer functions */
966 /* ------------------------------------------------------------------------- */
968 #if !defined(PLATFORM_MSDOS)
970 static const char *cursor_image_playfield[] =
972 /* width height num_colors chars_per_pixel */
981 /* some people complained about a "white dot" on the screen and thought it
982 was a graphical error... OK, let's just remove the whole pointer :-) */
1030 #if defined(TARGET_SDL)
1031 static const int cursor_bit_order = BIT_ORDER_MSB;
1032 #elif defined(TARGET_X11_NATIVE)
1033 static const int cursor_bit_order = BIT_ORDER_LSB;
1036 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1038 struct MouseCursorInfo *cursor;
1039 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1040 int header_lines = 4;
1043 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1045 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1048 for (y = 0; y < cursor->width; y++)
1050 for (x = 0; x < cursor->height; x++)
1053 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1058 cursor->data[i] = cursor->mask[i] = 0;
1061 switch (image[header_lines + y][x])
1064 cursor->data[i] |= bit_mask;
1065 cursor->mask[i] |= bit_mask;
1069 cursor->mask[i] |= bit_mask;
1078 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1082 #endif /* !PLATFORM_MSDOS */
1084 void SetMouseCursor(int mode)
1086 #if !defined(PLATFORM_MSDOS)
1087 static struct MouseCursorInfo *cursor_playfield = NULL;
1089 if (cursor_playfield == NULL)
1090 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1092 #if defined(TARGET_SDL)
1093 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1094 #elif defined(TARGET_X11_NATIVE)
1095 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1101 /* ========================================================================= */
1102 /* audio functions */
1103 /* ========================================================================= */
1105 void OpenAudio(void)
1107 /* always start with reliable default values */
1108 audio.sound_available = FALSE;
1109 audio.music_available = FALSE;
1110 audio.loops_available = FALSE;
1112 audio.sound_enabled = FALSE;
1113 audio.sound_deactivated = FALSE;
1115 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1116 audio.mixer_pid = 0;
1117 audio.device_name = NULL;
1118 audio.device_fd = -1;
1120 audio.num_channels = 0;
1121 audio.music_channel = 0;
1122 audio.first_sound_channel = 0;
1124 #if defined(TARGET_SDL)
1126 #elif defined(PLATFORM_UNIX)
1128 #elif defined(PLATFORM_MSDOS)
1133 void CloseAudio(void)
1135 #if defined(TARGET_SDL)
1137 #elif defined(PLATFORM_UNIX)
1139 #elif defined(PLATFORM_MSDOS)
1143 audio.sound_enabled = FALSE;
1146 void SetAudioMode(boolean enabled)
1148 if (!audio.sound_available)
1151 audio.sound_enabled = enabled;
1155 /* ========================================================================= */
1156 /* event functions */
1157 /* ========================================================================= */
1159 void InitEventFilter(EventFilter filter_function)
1161 #if defined(TARGET_SDL)
1162 /* set event filter to filter out certain events */
1163 SDL_SetEventFilter(filter_function);
1167 boolean PendingEvent(void)
1169 #if defined(TARGET_SDL)
1170 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1172 return (XPending(display) ? TRUE : FALSE);
1176 void NextEvent(Event *event)
1178 #if defined(TARGET_SDL)
1179 SDLNextEvent(event);
1181 XNextEvent(display, event);
1185 void PeekEvent(Event *event)
1187 #if defined(TARGET_SDL)
1188 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1190 XPeekEvent(display, event);
1194 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1196 #if defined(TARGET_SDL)
1199 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1200 (int)event->keysym.unicode,
1201 (int)event->keysym.sym,
1202 (int)SDL_GetModState());
1205 if (with_modifiers &&
1206 event->keysym.unicode > 0x0000 &&
1207 event->keysym.unicode < 0x2000)
1208 return event->keysym.unicode;
1210 return event->keysym.sym;
1215 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1216 (int)XLookupKeysym(event, event->state),
1217 (int)XLookupKeysym(event, 0));
1221 return XLookupKeysym(event, event->state);
1223 return XLookupKeysym(event, 0);
1227 KeyMod HandleKeyModState(Key key, int key_status)
1229 static KeyMod current_modifiers = KMOD_None;
1231 #if !defined(TARGET_SDL)
1232 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1234 KeyMod new_modifier = KMOD_None;
1239 new_modifier = KMOD_Shift_L;
1242 new_modifier = KMOD_Shift_R;
1244 case KSYM_Control_L:
1245 new_modifier = KMOD_Control_L;
1247 case KSYM_Control_R:
1248 new_modifier = KMOD_Control_R;
1251 new_modifier = KMOD_Meta_L;
1254 new_modifier = KMOD_Meta_R;
1257 new_modifier = KMOD_Alt_L;
1260 new_modifier = KMOD_Alt_R;
1266 if (key_status == KEY_PRESSED)
1267 current_modifiers |= new_modifier;
1269 current_modifiers &= ~new_modifier;
1273 return current_modifiers;
1276 KeyMod GetKeyModState()
1278 #if defined(TARGET_SDL)
1279 return (KeyMod)SDL_GetModState();
1281 return HandleKeyModState(KSYM_UNDEFINED, 0);
1285 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1287 if (event->type != EVENT_CLIENTMESSAGE)
1290 #if defined(TARGET_SDL)
1291 return TRUE; /* the only possible message here is SDL_QUIT */
1292 #elif defined(PLATFORM_UNIX)
1293 if ((event->window == window->drawable) &&
1294 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1302 /* ========================================================================= */
1303 /* joystick functions */
1304 /* ========================================================================= */
1306 void InitJoysticks()
1310 #if defined(NO_JOYSTICK)
1311 return; /* joysticks generally deactivated by compile-time directive */
1314 /* always start with reliable default values */
1315 joystick.status = JOYSTICK_NOT_AVAILABLE;
1316 for (i = 0; i < MAX_PLAYERS; i++)
1317 joystick.fd[i] = -1; /* joystick device closed */
1319 #if defined(TARGET_SDL)
1321 #elif defined(PLATFORM_UNIX)
1322 UnixInitJoysticks();
1323 #elif defined(PLATFORM_MSDOS)
1324 MSDOSInitJoysticks();
1328 for (i = 0; i < MAX_PLAYERS; i++)
1329 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1333 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1335 #if defined(TARGET_SDL)
1336 return SDLReadJoystick(nr, x, y, b1, b2);
1337 #elif defined(PLATFORM_UNIX)
1338 return UnixReadJoystick(nr, x, y, b1, b2);
1339 #elif defined(PLATFORM_MSDOS)
1340 return MSDOSReadJoystick(nr, x, y, b1, b2);