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);
98 void InitExitFunction(void (*exit_function)(int))
100 program.exit_function = exit_function;
102 /* set signal handlers to custom exit function */
103 signal(SIGINT, exit_function);
104 signal(SIGTERM, exit_function);
106 #if defined(TARGET_SDL)
107 /* set exit function to automatically cleanup SDL stuff after exit() */
112 void InitPlatformDependentStuff(void)
114 #if defined(PLATFORM_MSDOS)
119 #if defined(TARGET_SDL)
120 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
121 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
127 void ClosePlatformDependentStuff(void)
129 #if defined(PLATFORM_MSDOS)
134 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
135 int real_sx, int real_sy,
136 int full_sxsize, int full_sysize,
137 Bitmap *field_save_buffer)
143 gfx.real_sx = real_sx;
144 gfx.real_sy = real_sy;
145 gfx.full_sxsize = full_sxsize;
146 gfx.full_sysize = full_sysize;
148 gfx.field_save_buffer = field_save_buffer;
150 gfx.background_bitmap = NULL;
151 gfx.background_bitmap_mask = REDRAW_NONE;
153 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
154 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
157 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
165 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
173 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
175 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
176 gfx.scrollbuffer_width = scrollbuffer_width;
177 gfx.scrollbuffer_height = scrollbuffer_height;
180 void SetDrawDeactivationMask(int draw_deactivation_mask)
182 gfx.draw_deactivation_mask = draw_deactivation_mask;
185 void SetDrawBackgroundMask(int draw_background_mask)
187 gfx.draw_background_mask = draw_background_mask;
190 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
191 int dest_x, int dest_y, int width, int height)
193 int bitmap_xsize = width;
194 int bitmap_ysize = height;
195 int tile_xsize = tile->width;
196 int tile_ysize = tile->height;
197 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
198 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
201 for (y = 0; y < tile_ysteps; y++)
203 for (x = 0; x < tile_xsteps; x++)
205 int draw_x = dest_x + x * tile_xsize;
206 int draw_y = dest_y + y * tile_ysize;
207 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
208 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
210 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
215 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
217 if (background_bitmap_tile != NULL)
218 gfx.background_bitmap_mask |= mask;
220 gfx.background_bitmap_mask &= ~mask;
222 if (gfx.background_bitmap == NULL)
223 gfx.background_bitmap = CreateBitmap(video.width, video.height,
226 if (background_bitmap_tile == NULL) /* empty background requested */
229 if (mask == REDRAW_FIELD)
230 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
231 gfx.real_sx, gfx.real_sy,
232 gfx.full_sxsize, gfx.full_sysize);
233 else if (mask == REDRAW_DOOR_1)
235 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
237 gfx.dxsize, gfx.dysize);
241 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
243 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
246 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
248 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
252 /* ========================================================================= */
253 /* video functions */
254 /* ========================================================================= */
256 inline static int GetRealDepth(int depth)
258 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
261 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
262 int width, int height, Pixel color)
264 #if defined(TARGET_SDL)
265 SDLFillRectangle(bitmap, x, y, width, height, color);
267 X11FillRectangle(bitmap, x, y, width, height, color);
271 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
272 int src_x, int src_y, int width, int height,
273 int dst_x, int dst_y, int mask_mode)
275 #if defined(TARGET_SDL)
276 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
277 dst_x, dst_y, mask_mode);
279 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
280 dst_x, dst_y, mask_mode);
284 inline void InitVideoDisplay(void)
286 #if defined(TARGET_SDL)
287 SDLInitVideoDisplay();
289 X11InitVideoDisplay();
293 inline void CloseVideoDisplay(void)
295 KeyboardAutoRepeatOn();
297 #if defined(TARGET_SDL)
298 SDL_QuitSubSystem(SDL_INIT_VIDEO);
301 XCloseDisplay(display);
305 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
306 int width, int height, int depth,
310 video.height = height;
311 video.depth = GetRealDepth(depth);
312 video.fullscreen_available = FULLSCREEN_STATUS;
313 video.fullscreen_enabled = FALSE;
315 #if defined(TARGET_SDL)
316 SDLInitVideoBuffer(backbuffer, window, fullscreen);
318 X11InitVideoBuffer(backbuffer, window);
322 inline Bitmap *CreateBitmapStruct(void)
324 #if defined(TARGET_SDL)
325 return checked_calloc(sizeof(struct SDLSurfaceInfo));
327 return checked_calloc(sizeof(struct X11DrawableInfo));
331 inline Bitmap *CreateBitmap(int width, int height, int depth)
333 Bitmap *new_bitmap = CreateBitmapStruct();
334 int real_depth = GetRealDepth(depth);
336 #if defined(TARGET_SDL)
337 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
339 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
342 new_bitmap->width = width;
343 new_bitmap->height = height;
348 inline static void FreeBitmapPointers(Bitmap *bitmap)
353 #if defined(TARGET_SDL)
354 SDLFreeBitmapPointers(bitmap);
356 X11FreeBitmapPointers(bitmap);
359 checked_free(bitmap->source_filename);
360 bitmap->source_filename = NULL;
363 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
366 if (src_bitmap == NULL || dst_bitmap == NULL)
369 FreeBitmapPointers(dst_bitmap);
371 *dst_bitmap = *src_bitmap;
374 inline void FreeBitmap(Bitmap *bitmap)
379 FreeBitmapPointers(bitmap);
384 inline void CloseWindow(DrawWindow *window)
386 #if defined(TARGET_X11)
387 if (window->drawable)
389 XUnmapWindow(display, window->drawable);
390 XDestroyWindow(display, window->drawable);
393 XFreeGC(display, window->gc);
397 static inline boolean CheckDrawingArea(int x, int y, int width, int height,
400 if (draw_mask == REDRAW_NONE)
403 if (draw_mask & REDRAW_ALL)
406 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
409 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
412 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
418 inline boolean DrawingDeactivated(int x, int y, int width, int height)
420 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
423 inline boolean DrawingOnBackground(int x, int y)
425 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
426 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
429 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
430 int src_x, int src_y, int width, int height,
431 int dst_x, int dst_y)
433 if (DrawingDeactivated(dst_x, dst_y, width, height))
436 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
437 dst_x, dst_y, BLIT_OPAQUE);
440 inline void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
443 if (DrawingDeactivated(x, y, width, height))
446 sysFillRectangle(bitmap, x, y, width, height, color);
449 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
451 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
454 inline void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
455 int width, int height)
457 if (DrawingOnBackground(x, y))
458 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
460 ClearRectangle(bitmap, x, y, width, height);
463 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
465 #if defined(TARGET_X11)
468 bitmap->clip_gc = clip_gc;
469 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
474 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
476 #if defined(TARGET_X11)
479 bitmap->clip_gc = clip_gc;
480 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
485 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
486 int src_x, int src_y,
487 int width, int height,
488 int dst_x, int dst_y)
490 if (DrawingDeactivated(dst_x, dst_y, width, height))
493 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
494 dst_x, dst_y, BLIT_MASKED);
497 inline void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
498 int src_x, int src_y,
499 int width, int height,
500 int dst_x, int dst_y)
502 if (DrawingOnBackground(dst_x, dst_y))
504 /* draw background */
505 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
508 /* draw foreground */
509 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
510 dst_x - src_x, dst_y - src_y);
511 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
515 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
519 inline void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
522 #if defined(TARGET_SDL)
523 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
525 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
529 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
532 #if defined(TARGET_SDL)
533 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
535 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
539 #if !defined(TARGET_X11_NATIVE)
540 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
541 int to_x, int to_y, Pixel pixel, int line_width)
545 for (x = 0; x < line_width; x++)
547 for (y = 0; y < line_width; y++)
549 int dx = x - line_width / 2;
550 int dy = y - line_width / 2;
552 if ((x == 0 && y == 0) ||
553 (x == 0 && y == line_width - 1) ||
554 (x == line_width - 1 && y == 0) ||
555 (x == line_width - 1 && y == line_width - 1))
558 #if defined(TARGET_SDL)
560 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
561 #elif defined(TARGET_ALLEGRO)
562 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
563 to_x + dx, to_y + dy, pixel);
570 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
573 #if !defined(TARGET_X11_NATIVE)
577 for (i = 0; i < num_points - 1; i++)
578 DrawLine(bitmap, points[i].x, points[i].y,
579 points[i + 1].x, points[i + 1].y, pixel, line_width);
582 SDLDrawLines(bitmap->surface, points, num_points, pixel);
585 XSetForeground(display, bitmap->line_gc[1], pixel);
586 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
587 (XPoint *)points, num_points, CoordModeOrigin);
591 inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
593 if (x < 0 || x >= bitmap->width ||
594 y < 0 || y >= bitmap->height)
597 #if defined(TARGET_SDL)
598 return SDLGetPixel(bitmap, x, y);
599 #elif defined(TARGET_ALLEGRO)
600 return AllegroGetPixel(bitmap->drawable, x, y);
602 return X11GetPixel(bitmap, x, y);
606 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
607 unsigned int color_g, unsigned int color_b)
609 #if defined(TARGET_SDL)
610 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
611 #elif defined(TARGET_ALLEGRO)
612 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
614 return X11GetPixelFromRGB(color_r, color_g, color_b);
618 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
620 unsigned int color_r = (color >> 16) & 0xff;
621 unsigned int color_g = (color >> 8) & 0xff;
622 unsigned int color_b = (color >> 0) & 0xff;
624 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
627 /* execute all pending screen drawing operations */
628 inline void FlushDisplay(void)
635 /* execute and wait for all pending screen drawing operations */
636 inline void SyncDisplay(void)
639 XSync(display, FALSE);
643 inline void KeyboardAutoRepeatOn(void)
645 #if defined(TARGET_SDL)
646 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
647 SDL_DEFAULT_REPEAT_INTERVAL / 2);
648 SDL_EnableUNICODE(1);
651 XAutoRepeatOn(display);
655 inline void KeyboardAutoRepeatOff(void)
657 #if defined(TARGET_SDL)
658 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
659 SDL_EnableUNICODE(0);
662 XAutoRepeatOff(display);
666 inline boolean PointerInWindow(DrawWindow *window)
668 #if defined(TARGET_SDL)
676 /* if XQueryPointer() returns False, the pointer
677 is not on the same screen as the specified window */
678 return XQueryPointer(display, window->drawable, &root, &child,
679 &root_x, &root_y, &win_x, &win_y, &mask);
683 inline boolean SetVideoMode(boolean fullscreen)
685 #if defined(TARGET_SDL)
686 return SDLSetVideoMode(&backbuffer, fullscreen);
688 boolean success = TRUE;
690 if (fullscreen && video.fullscreen_available)
692 Error(ERR_WARN, "fullscreen not available in X11 version");
694 /* display error message only once */
695 video.fullscreen_available = FALSE;
704 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
706 #if defined(TARGET_SDL)
707 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
708 (!fullscreen && video.fullscreen_enabled))
709 fullscreen = SetVideoMode(fullscreen);
715 Bitmap *LoadImage(char *filename)
719 #if defined(TARGET_SDL)
720 new_bitmap = SDLLoadImage(filename);
722 new_bitmap = X11LoadImage(filename);
726 new_bitmap->source_filename = getStringCopy(filename);
731 Bitmap *LoadCustomImage(char *basename)
733 char *filename = getCustomImageFilename(basename);
736 if (filename == NULL)
737 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
739 if ((new_bitmap = LoadImage(filename)) == NULL)
740 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
745 void ReloadCustomImage(Bitmap *bitmap, char *basename)
747 char *filename = getCustomImageFilename(basename);
750 if (filename == NULL) /* (should never happen) */
752 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
756 if (strEqual(filename, bitmap->source_filename))
758 /* The old and new image are the same (have the same filename and path).
759 This usually means that this image does not exist in this graphic set
760 and a fallback to the existing image is done. */
765 if ((new_bitmap = LoadImage(filename)) == NULL)
767 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
771 if (bitmap->width != new_bitmap->width ||
772 bitmap->height != new_bitmap->height)
774 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
776 FreeBitmap(new_bitmap);
780 TransferBitmapPointers(new_bitmap, bitmap);
784 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
786 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
788 #if defined(TARGET_SDL)
789 SDLZoomBitmap(src_bitmap, dst_bitmap);
791 X11ZoomBitmap(src_bitmap, dst_bitmap);
797 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
800 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_8;
801 int width_1, height_1, width_2, height_2, width_8, height_8;
802 int new_width, new_height;
804 width_1 = old_bitmap->width * zoom_factor;
805 height_1 = old_bitmap->height * zoom_factor;
806 width_2 = width_1 / 2;
807 height_2 = height_1 / 2;
808 width_8 = width_1 / 8;
809 height_8 = height_1 / 8;
811 /* get image with normal size (this might require scaling up) */
812 if (zoom_factor != 1)
813 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
815 tmp_bitmap_1 = old_bitmap;
817 /* get image with 1/2 of normal size (for use in the level editor) */
818 if (zoom_factor != 2)
819 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
821 tmp_bitmap_2 = old_bitmap;
823 /* get image with 1/8 of normal size (for use on the preview screen) */
824 if (zoom_factor != 8)
825 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_1, width_1 / 8, height_1 / 8);
827 tmp_bitmap_8 = old_bitmap;
829 /* if image was scaled up, create new clipmask for normal size image */
830 if (zoom_factor != 1)
832 #if defined(TARGET_X11)
833 if (old_bitmap->clip_mask)
834 XFreePixmap(display, old_bitmap->clip_mask);
836 old_bitmap->clip_mask =
837 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
839 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
841 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
843 if (old_bitmap->surface_masked)
844 SDL_FreeSurface(old_bitmap->surface_masked);
846 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
847 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
848 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
849 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
850 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
855 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
857 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
859 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
860 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
862 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
863 3 * width_1 / 4, height_1);
865 if (zoom_factor != 1)
866 FreeBitmap(tmp_bitmap_1);
868 if (zoom_factor != 2)
869 FreeBitmap(tmp_bitmap_2);
871 if (zoom_factor != 8)
872 FreeBitmap(tmp_bitmap_8);
874 /* replace image with extended image (containing normal, 1/2 and 1/8 size) */
875 #if defined(TARGET_SDL)
876 swap_bitmap.surface = old_bitmap->surface;
877 old_bitmap->surface = new_bitmap->surface;
878 new_bitmap->surface = swap_bitmap.surface;
880 swap_bitmap.drawable = old_bitmap->drawable;
881 old_bitmap->drawable = new_bitmap->drawable;
882 new_bitmap->drawable = swap_bitmap.drawable;
885 old_bitmap->width = new_bitmap->width;
886 old_bitmap->height = new_bitmap->height;
888 FreeBitmap(new_bitmap);
892 /* ------------------------------------------------------------------------- */
893 /* mouse pointer functions */
894 /* ------------------------------------------------------------------------- */
896 #if !defined(PLATFORM_MSDOS)
898 static const char *cursor_image_playfield[] =
900 /* width height num_colors chars_per_pixel */
909 /* some people complained about a "white dot" on the screen and thought it
910 was a graphical error... OK, let's just remove the whole pointer :-) */
958 #if defined(TARGET_SDL)
959 static const int cursor_bit_order = BIT_ORDER_MSB;
960 #elif defined(TARGET_X11_NATIVE)
961 static const int cursor_bit_order = BIT_ORDER_LSB;
964 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
966 struct MouseCursorInfo *cursor;
967 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
968 int header_lines = 4;
971 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
973 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
976 for (y = 0; y < cursor->width; y++)
978 for (x = 0; x < cursor->height; x++)
981 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
986 cursor->data[i] = cursor->mask[i] = 0;
989 switch (image[header_lines + y][x])
992 cursor->data[i] |= bit_mask;
993 cursor->mask[i] |= bit_mask;
997 cursor->mask[i] |= bit_mask;
1006 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1010 #endif /* !PLATFORM_MSDOS */
1012 void SetMouseCursor(int mode)
1014 #if !defined(PLATFORM_MSDOS)
1015 static struct MouseCursorInfo *cursor_playfield = NULL;
1017 if (cursor_playfield == NULL)
1018 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1020 #if defined(TARGET_SDL)
1021 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1022 #elif defined(TARGET_X11_NATIVE)
1023 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1029 /* ========================================================================= */
1030 /* audio functions */
1031 /* ========================================================================= */
1033 inline void OpenAudio(void)
1035 /* always start with reliable default values */
1036 audio.sound_available = FALSE;
1037 audio.music_available = FALSE;
1038 audio.loops_available = FALSE;
1040 audio.sound_enabled = FALSE;
1041 audio.sound_deactivated = FALSE;
1043 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1044 audio.mixer_pid = 0;
1045 audio.device_name = NULL;
1046 audio.device_fd = -1;
1048 audio.num_channels = 0;
1049 audio.music_channel = 0;
1050 audio.first_sound_channel = 0;
1052 #if defined(TARGET_SDL)
1054 #elif defined(PLATFORM_UNIX)
1056 #elif defined(PLATFORM_MSDOS)
1061 inline void CloseAudio(void)
1063 #if defined(TARGET_SDL)
1065 #elif defined(PLATFORM_UNIX)
1067 #elif defined(PLATFORM_MSDOS)
1071 audio.sound_enabled = FALSE;
1074 inline void SetAudioMode(boolean enabled)
1076 if (!audio.sound_available)
1079 audio.sound_enabled = enabled;
1083 /* ========================================================================= */
1084 /* event functions */
1085 /* ========================================================================= */
1087 inline void InitEventFilter(EventFilter filter_function)
1089 #if defined(TARGET_SDL)
1090 /* set event filter to filter out certain events */
1091 SDL_SetEventFilter(filter_function);
1095 inline boolean PendingEvent(void)
1097 #if defined(TARGET_SDL)
1098 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1100 return (XPending(display) ? TRUE : FALSE);
1104 inline void NextEvent(Event *event)
1106 #if defined(TARGET_SDL)
1107 SDLNextEvent(event);
1109 XNextEvent(display, event);
1113 inline void PeekEvent(Event *event)
1115 #if defined(TARGET_SDL)
1116 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1118 XPeekEvent(display, event);
1122 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1124 #if defined(TARGET_SDL)
1127 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1128 (int)event->keysym.unicode,
1129 (int)event->keysym.sym,
1130 (int)SDL_GetModState());
1133 if (with_modifiers &&
1134 event->keysym.unicode > 0x0000 &&
1135 event->keysym.unicode < 0x2000)
1136 return event->keysym.unicode;
1138 return event->keysym.sym;
1143 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1144 (int)XLookupKeysym(event, event->state),
1145 (int)XLookupKeysym(event, 0));
1149 return XLookupKeysym(event, event->state);
1151 return XLookupKeysym(event, 0);
1155 inline KeyMod HandleKeyModState(Key key, int key_status)
1157 static KeyMod current_modifiers = KMOD_None;
1159 #if !defined(TARGET_SDL)
1160 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1162 KeyMod new_modifier = KMOD_None;
1167 new_modifier = KMOD_Shift_L;
1170 new_modifier = KMOD_Shift_R;
1172 case KSYM_Control_L:
1173 new_modifier = KMOD_Control_L;
1175 case KSYM_Control_R:
1176 new_modifier = KMOD_Control_R;
1179 new_modifier = KMOD_Meta_L;
1182 new_modifier = KMOD_Meta_R;
1185 new_modifier = KMOD_Alt_L;
1188 new_modifier = KMOD_Alt_R;
1194 if (key_status == KEY_PRESSED)
1195 current_modifiers |= new_modifier;
1197 current_modifiers &= ~new_modifier;
1201 return current_modifiers;
1204 inline KeyMod GetKeyModState()
1206 #if defined(TARGET_SDL)
1207 return (KeyMod)SDL_GetModState();
1209 return HandleKeyModState(KSYM_UNDEFINED, 0);
1213 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1215 if (event->type != EVENT_CLIENTMESSAGE)
1218 #if defined(TARGET_SDL)
1219 return TRUE; /* the only possible message here is SDL_QUIT */
1220 #elif defined(PLATFORM_UNIX)
1221 if ((event->window == window->drawable) &&
1222 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1230 /* ========================================================================= */
1231 /* joystick functions */
1232 /* ========================================================================= */
1234 inline void InitJoysticks()
1238 #if defined(NO_JOYSTICK)
1239 return; /* joysticks generally deactivated by compile-time directive */
1242 /* always start with reliable default values */
1243 joystick.status = JOYSTICK_NOT_AVAILABLE;
1244 for (i = 0; i < MAX_PLAYERS; i++)
1245 joystick.fd[i] = -1; /* joystick device closed */
1247 #if defined(TARGET_SDL)
1249 #elif defined(PLATFORM_UNIX)
1250 UnixInitJoysticks();
1251 #elif defined(PLATFORM_MSDOS)
1252 MSDOSInitJoysticks();
1256 for (i = 0; i < MAX_PLAYERS; i++)
1257 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1261 inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1263 #if defined(TARGET_SDL)
1264 return SDLReadJoystick(nr, x, y, b1, b2);
1265 #elif defined(PLATFORM_UNIX)
1266 return UnixReadJoystick(nr, x, y, b1, b2);
1267 #elif defined(PLATFORM_MSDOS)
1268 return MSDOSReadJoystick(nr, x, y, b1, b2);