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_directory, char *program_title,
73 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_directory = userdata_directory;
83 program.program_title = program_title;
84 program.window_title = window_title;
85 program.icon_title = icon_title;
86 program.x11_icon_filename = x11_icon_filename;
87 program.x11_iconmask_filename = x11_iconmask_filename;
88 program.msdos_cursor_filename = msdos_cursor_filename;
90 program.cookie_prefix = cookie_prefix;
91 program.filename_prefix = filename_prefix;
93 program.version_major = VERSION_MAJOR(program_version);
94 program.version_minor = VERSION_MINOR(program_version);
95 program.version_patch = VERSION_PATCH(program_version);
97 program.error_filename = getErrorFilename(ERROR_BASENAME);
98 program.error_file = stderr;
101 void InitExitFunction(void (*exit_function)(int))
103 program.exit_function = exit_function;
105 /* set signal handlers to custom exit function */
106 signal(SIGINT, exit_function);
107 signal(SIGTERM, exit_function);
109 #if defined(TARGET_SDL)
110 /* set exit function to automatically cleanup SDL stuff after exit() */
115 void InitPlatformDependentStuff(void)
117 #if defined(PLATFORM_MSDOS)
121 #if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
125 #if defined(TARGET_SDL)
126 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
127 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
133 void ClosePlatformDependentStuff(void)
135 #if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
139 #if defined(PLATFORM_MSDOS)
144 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
145 int real_sx, int real_sy,
146 int full_sxsize, int full_sysize,
147 Bitmap *field_save_buffer)
153 gfx.real_sx = real_sx;
154 gfx.real_sy = real_sy;
155 gfx.full_sxsize = full_sxsize;
156 gfx.full_sysize = full_sysize;
158 gfx.field_save_buffer = field_save_buffer;
160 gfx.background_bitmap = NULL;
161 gfx.background_bitmap_mask = REDRAW_NONE;
163 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
164 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
167 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
175 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
183 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
185 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
186 gfx.scrollbuffer_width = scrollbuffer_width;
187 gfx.scrollbuffer_height = scrollbuffer_height;
190 void SetDrawDeactivationMask(int draw_deactivation_mask)
192 gfx.draw_deactivation_mask = draw_deactivation_mask;
195 void SetDrawBackgroundMask(int draw_background_mask)
197 gfx.draw_background_mask = draw_background_mask;
200 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
201 int dest_x, int dest_y, int width, int height)
203 int bitmap_xsize = width;
204 int bitmap_ysize = height;
205 int tile_xsize = tile->width;
206 int tile_ysize = tile->height;
207 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
208 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
211 for (y = 0; y < tile_ysteps; y++)
213 for (x = 0; x < tile_xsteps; x++)
215 int draw_x = dest_x + x * tile_xsize;
216 int draw_y = dest_y + y * tile_ysize;
217 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
218 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
220 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
225 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
227 if (background_bitmap_tile != NULL)
228 gfx.background_bitmap_mask |= mask;
230 gfx.background_bitmap_mask &= ~mask;
232 if (gfx.background_bitmap == NULL)
233 gfx.background_bitmap = CreateBitmap(video.width, video.height,
236 if (background_bitmap_tile == NULL) /* empty background requested */
239 if (mask == REDRAW_FIELD)
240 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
241 gfx.real_sx, gfx.real_sy,
242 gfx.full_sxsize, gfx.full_sysize);
243 else if (mask == REDRAW_DOOR_1)
245 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
247 gfx.dxsize, gfx.dysize);
251 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
253 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
256 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
258 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
262 /* ========================================================================= */
263 /* video functions */
264 /* ========================================================================= */
266 inline static int GetRealDepth(int depth)
268 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
271 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
272 int width, int height, Pixel color)
274 #if defined(TARGET_SDL)
275 SDLFillRectangle(bitmap, x, y, width, height, color);
277 X11FillRectangle(bitmap, x, y, width, height, color);
281 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
282 int src_x, int src_y, int width, int height,
283 int dst_x, int dst_y, int mask_mode)
285 #if defined(TARGET_SDL)
286 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
287 dst_x, dst_y, mask_mode);
289 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
290 dst_x, dst_y, mask_mode);
294 void InitVideoDisplay(void)
296 #if defined(TARGET_SDL)
297 SDLInitVideoDisplay();
299 X11InitVideoDisplay();
303 void CloseVideoDisplay(void)
305 KeyboardAutoRepeatOn();
307 #if defined(TARGET_SDL)
308 SDL_QuitSubSystem(SDL_INIT_VIDEO);
311 XCloseDisplay(display);
315 void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
316 int width, int height, int depth, boolean fullscreen)
319 video.height = height;
320 video.depth = GetRealDepth(depth);
321 video.fullscreen_available = FULLSCREEN_STATUS;
322 video.fullscreen_enabled = FALSE;
324 #if defined(TARGET_SDL)
325 SDLInitVideoBuffer(backbuffer, window, fullscreen);
327 X11InitVideoBuffer(backbuffer, window);
331 Bitmap *CreateBitmapStruct(void)
333 #if defined(TARGET_SDL)
334 return checked_calloc(sizeof(struct SDLSurfaceInfo));
336 return checked_calloc(sizeof(struct X11DrawableInfo));
340 Bitmap *CreateBitmap(int width, int height, int depth)
342 Bitmap *new_bitmap = CreateBitmapStruct();
343 int real_depth = GetRealDepth(depth);
345 #if defined(TARGET_SDL)
346 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
348 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
351 new_bitmap->width = width;
352 new_bitmap->height = height;
357 inline static void FreeBitmapPointers(Bitmap *bitmap)
362 #if defined(TARGET_SDL)
363 SDLFreeBitmapPointers(bitmap);
365 X11FreeBitmapPointers(bitmap);
368 checked_free(bitmap->source_filename);
369 bitmap->source_filename = NULL;
372 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
375 if (src_bitmap == NULL || dst_bitmap == NULL)
378 FreeBitmapPointers(dst_bitmap);
380 *dst_bitmap = *src_bitmap;
383 void FreeBitmap(Bitmap *bitmap)
388 FreeBitmapPointers(bitmap);
393 void CloseWindow(DrawWindow *window)
395 #if defined(TARGET_X11)
396 if (window->drawable)
398 XUnmapWindow(display, window->drawable);
399 XDestroyWindow(display, window->drawable);
402 XFreeGC(display, window->gc);
406 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
409 if (draw_mask == REDRAW_NONE)
412 if (draw_mask & REDRAW_ALL)
415 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
418 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
421 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
427 boolean DrawingDeactivated(int x, int y, int width, int height)
429 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
432 boolean DrawingOnBackground(int x, int y)
434 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
435 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
438 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
439 int src_x, int src_y, int width, int height,
440 int dst_x, int dst_y)
442 if (DrawingDeactivated(dst_x, dst_y, width, height))
445 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
446 dst_x, dst_y, BLIT_OPAQUE);
449 void FadeScreen(Bitmap *bitmap_cross, int fade_mode, int fade_delay,
452 #if defined(TARGET_SDL)
453 SDLFadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
455 X11FadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
459 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
462 if (DrawingDeactivated(x, y, width, height))
465 sysFillRectangle(bitmap, x, y, width, height, color);
468 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
470 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
473 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
474 int width, int height)
476 if (DrawingOnBackground(x, y))
477 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
479 ClearRectangle(bitmap, x, y, width, height);
482 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
484 #if defined(TARGET_X11)
487 bitmap->clip_gc = clip_gc;
488 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
493 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
495 #if defined(TARGET_X11)
498 bitmap->clip_gc = clip_gc;
499 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
504 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
505 int src_x, int src_y, int width, int height,
506 int dst_x, int dst_y)
508 if (DrawingDeactivated(dst_x, dst_y, width, height))
511 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
512 dst_x, dst_y, BLIT_MASKED);
515 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
516 int src_x, int src_y, int width, int height,
517 int dst_x, int dst_y)
519 if (DrawingOnBackground(dst_x, dst_y))
521 /* draw background */
522 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
525 /* draw foreground */
526 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
527 dst_x - src_x, dst_y - src_y);
528 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
532 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
536 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
539 #if defined(TARGET_SDL)
540 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
542 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
546 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
549 #if defined(TARGET_SDL)
550 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
552 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
556 #if !defined(TARGET_X11_NATIVE)
557 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
558 int to_x, int to_y, Pixel pixel, int line_width)
562 for (x = 0; x < line_width; x++)
564 for (y = 0; y < line_width; y++)
566 int dx = x - line_width / 2;
567 int dy = y - line_width / 2;
569 if ((x == 0 && y == 0) ||
570 (x == 0 && y == line_width - 1) ||
571 (x == line_width - 1 && y == 0) ||
572 (x == line_width - 1 && y == line_width - 1))
575 #if defined(TARGET_SDL)
577 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
578 #elif defined(TARGET_ALLEGRO)
579 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
580 to_x + dx, to_y + dy, pixel);
587 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
589 #if !defined(TARGET_X11_NATIVE)
593 for (i = 0; i < num_points - 1; i++)
594 DrawLine(bitmap, points[i].x, points[i].y,
595 points[i + 1].x, points[i + 1].y, pixel, line_width);
598 SDLDrawLines(bitmap->surface, points, num_points, pixel);
601 XSetForeground(display, bitmap->line_gc[1], pixel);
602 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
603 (XPoint *)points, num_points, CoordModeOrigin);
607 Pixel GetPixel(Bitmap *bitmap, int x, int y)
609 if (x < 0 || x >= bitmap->width ||
610 y < 0 || y >= bitmap->height)
613 #if defined(TARGET_SDL)
614 return SDLGetPixel(bitmap, x, y);
615 #elif defined(TARGET_ALLEGRO)
616 return AllegroGetPixel(bitmap->drawable, x, y);
618 return X11GetPixel(bitmap, x, y);
622 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
623 unsigned int color_g, unsigned int color_b)
625 #if defined(TARGET_SDL)
626 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
627 #elif defined(TARGET_ALLEGRO)
628 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
630 return X11GetPixelFromRGB(color_r, color_g, color_b);
634 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
636 unsigned int color_r = (color >> 16) & 0xff;
637 unsigned int color_g = (color >> 8) & 0xff;
638 unsigned int color_b = (color >> 0) & 0xff;
640 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
643 /* execute all pending screen drawing operations */
644 void FlushDisplay(void)
651 /* execute and wait for all pending screen drawing operations */
652 void SyncDisplay(void)
655 XSync(display, FALSE);
659 void KeyboardAutoRepeatOn(void)
661 #if defined(TARGET_SDL)
662 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
663 SDL_DEFAULT_REPEAT_INTERVAL / 2);
664 SDL_EnableUNICODE(1);
667 XAutoRepeatOn(display);
671 void KeyboardAutoRepeatOff(void)
673 #if defined(TARGET_SDL)
674 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
675 SDL_EnableUNICODE(0);
678 XAutoRepeatOff(display);
682 boolean PointerInWindow(DrawWindow *window)
684 #if defined(TARGET_SDL)
692 /* if XQueryPointer() returns False, the pointer
693 is not on the same screen as the specified window */
694 return XQueryPointer(display, window->drawable, &root, &child,
695 &root_x, &root_y, &win_x, &win_y, &mask);
699 boolean SetVideoMode(boolean fullscreen)
701 #if defined(TARGET_SDL)
702 return SDLSetVideoMode(&backbuffer, fullscreen);
704 boolean success = TRUE;
706 if (fullscreen && video.fullscreen_available)
708 Error(ERR_WARN, "fullscreen not available in X11 version");
710 /* display error message only once */
711 video.fullscreen_available = FALSE;
720 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
722 #if defined(TARGET_SDL)
723 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
724 (!fullscreen && video.fullscreen_enabled))
725 fullscreen = SetVideoMode(fullscreen);
731 Bitmap *LoadImage(char *filename)
735 #if defined(TARGET_SDL)
736 new_bitmap = SDLLoadImage(filename);
738 new_bitmap = X11LoadImage(filename);
742 new_bitmap->source_filename = getStringCopy(filename);
747 Bitmap *LoadCustomImage(char *basename)
749 char *filename = getCustomImageFilename(basename);
752 if (filename == NULL)
753 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
755 if ((new_bitmap = LoadImage(filename)) == NULL)
756 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
761 void ReloadCustomImage(Bitmap *bitmap, char *basename)
763 char *filename = getCustomImageFilename(basename);
766 if (filename == NULL) /* (should never happen) */
768 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
772 if (strEqual(filename, bitmap->source_filename))
774 /* The old and new image are the same (have the same filename and path).
775 This usually means that this image does not exist in this graphic set
776 and a fallback to the existing image is done. */
781 if ((new_bitmap = LoadImage(filename)) == NULL)
783 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
787 if (bitmap->width != new_bitmap->width ||
788 bitmap->height != new_bitmap->height)
790 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
792 FreeBitmap(new_bitmap);
796 TransferBitmapPointers(new_bitmap, bitmap);
800 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
802 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
804 #if defined(TARGET_SDL)
805 SDLZoomBitmap(src_bitmap, dst_bitmap);
807 X11ZoomBitmap(src_bitmap, dst_bitmap);
813 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
814 boolean create_small_bitmaps)
817 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_4,*tmp_bitmap_8;
818 int width_1, height_1, width_2, height_2, width_4, height_4, width_8,height_8;
819 int new_width, new_height;
821 /* calculate new image dimensions for normal sized image */
822 width_1 = old_bitmap->width * zoom_factor;
823 height_1 = old_bitmap->height * zoom_factor;
825 /* get image with normal size (this might require scaling up) */
826 if (zoom_factor != 1)
827 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
829 tmp_bitmap_1 = old_bitmap;
831 /* this is only needed to make compilers happy */
832 tmp_bitmap_2 = tmp_bitmap_4 = tmp_bitmap_8 = NULL;
834 if (create_small_bitmaps)
836 /* calculate new image dimensions for small images */
837 width_2 = width_1 / 2;
838 height_2 = height_1 / 2;
839 width_4 = width_1 / 4;
840 height_4 = height_1 / 4;
841 width_8 = width_1 / 8;
842 height_8 = height_1 / 8;
844 /* get image with 1/2 of normal size (for use in the level editor) */
845 if (zoom_factor != 2)
846 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
848 tmp_bitmap_2 = old_bitmap;
850 /* get image with 1/4 of normal size (for use in the level editor) */
851 if (zoom_factor != 4)
852 tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
854 tmp_bitmap_4 = old_bitmap;
856 /* get image with 1/8 of normal size (for use on the preview screen) */
857 if (zoom_factor != 8)
858 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
860 tmp_bitmap_8 = old_bitmap;
863 /* if image was scaled up, create new clipmask for normal size image */
864 if (zoom_factor != 1)
866 #if defined(TARGET_X11)
867 if (old_bitmap->clip_mask)
868 XFreePixmap(display, old_bitmap->clip_mask);
870 old_bitmap->clip_mask =
871 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
873 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
875 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
877 if (old_bitmap->surface_masked)
878 SDL_FreeSurface(old_bitmap->surface_masked);
880 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
881 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
882 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
883 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
884 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
888 if (create_small_bitmaps)
891 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
893 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
895 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
896 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
898 BlitBitmap(tmp_bitmap_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
899 width_1 / 2, height_1);
900 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
901 3 * width_1 / 4, height_1);
906 new_height = height_1;
908 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
911 if (create_small_bitmaps)
913 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
914 if (zoom_factor != 1)
915 FreeBitmap(tmp_bitmap_1);
917 if (zoom_factor != 2)
918 FreeBitmap(tmp_bitmap_2);
920 if (zoom_factor != 4)
921 FreeBitmap(tmp_bitmap_4);
923 if (zoom_factor != 8)
924 FreeBitmap(tmp_bitmap_8);
927 /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
928 #if defined(TARGET_SDL)
929 swap_bitmap.surface = old_bitmap->surface;
930 old_bitmap->surface = new_bitmap->surface;
931 new_bitmap->surface = swap_bitmap.surface;
933 swap_bitmap.drawable = old_bitmap->drawable;
934 old_bitmap->drawable = new_bitmap->drawable;
935 new_bitmap->drawable = swap_bitmap.drawable;
938 old_bitmap->width = new_bitmap->width;
939 old_bitmap->height = new_bitmap->height;
941 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
944 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
946 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
949 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
951 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
955 /* ------------------------------------------------------------------------- */
956 /* mouse pointer functions */
957 /* ------------------------------------------------------------------------- */
959 #if !defined(PLATFORM_MSDOS)
961 static const char *cursor_image_playfield[] =
963 /* width height num_colors chars_per_pixel */
972 /* some people complained about a "white dot" on the screen and thought it
973 was a graphical error... OK, let's just remove the whole pointer :-) */
1021 #if defined(TARGET_SDL)
1022 static const int cursor_bit_order = BIT_ORDER_MSB;
1023 #elif defined(TARGET_X11_NATIVE)
1024 static const int cursor_bit_order = BIT_ORDER_LSB;
1027 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1029 struct MouseCursorInfo *cursor;
1030 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1031 int header_lines = 4;
1034 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1036 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1039 for (y = 0; y < cursor->width; y++)
1041 for (x = 0; x < cursor->height; x++)
1044 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1049 cursor->data[i] = cursor->mask[i] = 0;
1052 switch (image[header_lines + y][x])
1055 cursor->data[i] |= bit_mask;
1056 cursor->mask[i] |= bit_mask;
1060 cursor->mask[i] |= bit_mask;
1069 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1073 #endif /* !PLATFORM_MSDOS */
1075 void SetMouseCursor(int mode)
1077 #if !defined(PLATFORM_MSDOS)
1078 static struct MouseCursorInfo *cursor_playfield = NULL;
1080 if (cursor_playfield == NULL)
1081 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1083 #if defined(TARGET_SDL)
1084 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1085 #elif defined(TARGET_X11_NATIVE)
1086 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1092 /* ========================================================================= */
1093 /* audio functions */
1094 /* ========================================================================= */
1096 void OpenAudio(void)
1098 /* always start with reliable default values */
1099 audio.sound_available = FALSE;
1100 audio.music_available = FALSE;
1101 audio.loops_available = FALSE;
1103 audio.sound_enabled = FALSE;
1104 audio.sound_deactivated = FALSE;
1106 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1107 audio.mixer_pid = 0;
1108 audio.device_name = NULL;
1109 audio.device_fd = -1;
1111 audio.num_channels = 0;
1112 audio.music_channel = 0;
1113 audio.first_sound_channel = 0;
1115 #if defined(TARGET_SDL)
1117 #elif defined(PLATFORM_UNIX)
1119 #elif defined(PLATFORM_MSDOS)
1124 void CloseAudio(void)
1126 #if defined(TARGET_SDL)
1128 #elif defined(PLATFORM_UNIX)
1130 #elif defined(PLATFORM_MSDOS)
1134 audio.sound_enabled = FALSE;
1137 void SetAudioMode(boolean enabled)
1139 if (!audio.sound_available)
1142 audio.sound_enabled = enabled;
1146 /* ========================================================================= */
1147 /* event functions */
1148 /* ========================================================================= */
1150 void InitEventFilter(EventFilter filter_function)
1152 #if defined(TARGET_SDL)
1153 /* set event filter to filter out certain events */
1154 SDL_SetEventFilter(filter_function);
1158 boolean PendingEvent(void)
1160 #if defined(TARGET_SDL)
1161 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1163 return (XPending(display) ? TRUE : FALSE);
1167 void NextEvent(Event *event)
1169 #if defined(TARGET_SDL)
1170 SDLNextEvent(event);
1172 XNextEvent(display, event);
1176 void PeekEvent(Event *event)
1178 #if defined(TARGET_SDL)
1179 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1181 XPeekEvent(display, event);
1185 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1187 #if defined(TARGET_SDL)
1190 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1191 (int)event->keysym.unicode,
1192 (int)event->keysym.sym,
1193 (int)SDL_GetModState());
1196 if (with_modifiers &&
1197 event->keysym.unicode > 0x0000 &&
1198 event->keysym.unicode < 0x2000)
1199 return event->keysym.unicode;
1201 return event->keysym.sym;
1206 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1207 (int)XLookupKeysym(event, event->state),
1208 (int)XLookupKeysym(event, 0));
1212 return XLookupKeysym(event, event->state);
1214 return XLookupKeysym(event, 0);
1218 KeyMod HandleKeyModState(Key key, int key_status)
1220 static KeyMod current_modifiers = KMOD_None;
1222 #if !defined(TARGET_SDL)
1223 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1225 KeyMod new_modifier = KMOD_None;
1230 new_modifier = KMOD_Shift_L;
1233 new_modifier = KMOD_Shift_R;
1235 case KSYM_Control_L:
1236 new_modifier = KMOD_Control_L;
1238 case KSYM_Control_R:
1239 new_modifier = KMOD_Control_R;
1242 new_modifier = KMOD_Meta_L;
1245 new_modifier = KMOD_Meta_R;
1248 new_modifier = KMOD_Alt_L;
1251 new_modifier = KMOD_Alt_R;
1257 if (key_status == KEY_PRESSED)
1258 current_modifiers |= new_modifier;
1260 current_modifiers &= ~new_modifier;
1264 return current_modifiers;
1267 KeyMod GetKeyModState()
1269 #if defined(TARGET_SDL)
1270 return (KeyMod)SDL_GetModState();
1272 return HandleKeyModState(KSYM_UNDEFINED, 0);
1276 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1278 if (event->type != EVENT_CLIENTMESSAGE)
1281 #if defined(TARGET_SDL)
1282 return TRUE; /* the only possible message here is SDL_QUIT */
1283 #elif defined(PLATFORM_UNIX)
1284 if ((event->window == window->drawable) &&
1285 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1293 /* ========================================================================= */
1294 /* joystick functions */
1295 /* ========================================================================= */
1297 void InitJoysticks()
1301 #if defined(NO_JOYSTICK)
1302 return; /* joysticks generally deactivated by compile-time directive */
1305 /* always start with reliable default values */
1306 joystick.status = JOYSTICK_NOT_AVAILABLE;
1307 for (i = 0; i < MAX_PLAYERS; i++)
1308 joystick.fd[i] = -1; /* joystick device closed */
1310 #if defined(TARGET_SDL)
1312 #elif defined(PLATFORM_UNIX)
1313 UnixInitJoysticks();
1314 #elif defined(PLATFORM_MSDOS)
1315 MSDOSInitJoysticks();
1319 for (i = 0; i < MAX_PLAYERS; i++)
1320 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1324 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1326 #if defined(TARGET_SDL)
1327 return SDLReadJoystick(nr, x, y, b1, b2);
1328 #elif defined(PLATFORM_UNIX)
1329 return UnixReadJoystick(nr, x, y, b1, b2);
1330 #elif defined(PLATFORM_MSDOS)
1331 return MSDOSReadJoystick(nr, x, y, b1, b2);