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 = NULL;
45 LevelDirTree *leveldir_current = NULL;
48 Display *display = NULL;
49 Visual *visual = NULL;
53 DrawWindow *window = NULL;
54 DrawBuffer *backbuffer = NULL;
55 DrawBuffer *drawto = NULL;
57 int button_status = MB_NOT_PRESSED;
58 boolean motion_status = FALSE;
60 int redraw_mask = REDRAW_NONE;
66 /* ========================================================================= */
67 /* init/close functions */
68 /* ========================================================================= */
70 void InitProgramInfo(char *argv0,
71 char *userdata_directory, char *program_title,
72 char *window_title, char *icon_title,
73 char *x11_icon_filename, char *x11_iconmask_filename,
74 char *msdos_cursor_filename,
75 char *cookie_prefix, char *filename_prefix,
78 program.command_basename =
79 (strrchr(argv0, '/') ? strrchr(argv0, '/') + 1 : argv0);
81 program.userdata_directory = userdata_directory;
82 program.program_title = program_title;
83 program.window_title = window_title;
84 program.icon_title = icon_title;
85 program.x11_icon_filename = x11_icon_filename;
86 program.x11_iconmask_filename = x11_iconmask_filename;
87 program.msdos_cursor_filename = msdos_cursor_filename;
89 program.cookie_prefix = cookie_prefix;
90 program.filename_prefix = filename_prefix;
92 program.version_major = VERSION_MAJOR(program_version);
93 program.version_minor = VERSION_MINOR(program_version);
94 program.version_patch = VERSION_PATCH(program_version);
97 void InitExitFunction(void (*exit_function)(int))
99 program.exit_function = exit_function;
101 /* set signal handlers to custom exit function */
102 signal(SIGINT, exit_function);
103 signal(SIGTERM, exit_function);
105 #if defined(TARGET_SDL)
106 /* set exit function to automatically cleanup SDL stuff after exit() */
111 void InitPlatformDependentStuff(void)
113 #if defined(PLATFORM_MSDOS)
118 #if defined(TARGET_SDL)
119 if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
120 Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
126 void ClosePlatformDependentStuff(void)
128 #if defined(PLATFORM_MSDOS)
133 void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
134 int real_sx, int real_sy,
135 int full_sxsize, int full_sysize,
136 Bitmap *field_save_buffer)
142 gfx.real_sx = real_sx;
143 gfx.real_sy = real_sy;
144 gfx.full_sxsize = full_sxsize;
145 gfx.full_sysize = full_sysize;
147 gfx.field_save_buffer = field_save_buffer;
149 gfx.background_bitmap = NULL;
150 gfx.background_bitmap_mask = REDRAW_NONE;
152 SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
153 SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
156 void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
164 void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
172 void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
174 /* currently only used by MSDOS code to alloc VRAM buffer, if available */
175 gfx.scrollbuffer_width = scrollbuffer_width;
176 gfx.scrollbuffer_height = scrollbuffer_height;
179 void SetDrawDeactivationMask(int draw_deactivation_mask)
181 gfx.draw_deactivation_mask = draw_deactivation_mask;
184 void SetDrawBackgroundMask(int draw_background_mask)
186 gfx.draw_background_mask = draw_background_mask;
189 static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
190 int dest_x, int dest_y, int width, int height)
192 int bitmap_xsize = width;
193 int bitmap_ysize = height;
194 int tile_xsize = tile->width;
195 int tile_ysize = tile->height;
196 int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
197 int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
200 for (y = 0; y < tile_ysteps; y++)
202 for (x = 0; x < tile_xsteps; x++)
204 int draw_x = dest_x + x * tile_xsize;
205 int draw_y = dest_y + y * tile_ysize;
206 int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
207 int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
209 BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
214 void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
216 /* !!! THIS DOES NOT WORK !!! REPLACED BITMAPS MAY HAVE SAME ADDRESS !!! */
218 static Bitmap *main_bitmap_tile = NULL;
219 static Bitmap *door_bitmap_tile = NULL;
221 if (mask == REDRAW_FIELD)
223 if (background_bitmap_tile == main_bitmap_tile)
224 return; /* main background tile has not changed */
226 main_bitmap_tile = background_bitmap_tile;
228 else if (mask == REDRAW_DOOR_1)
230 if (background_bitmap_tile == door_bitmap_tile)
231 return; /* main background tile has not changed */
233 door_bitmap_tile = background_bitmap_tile;
235 else /* should not happen */
239 if (background_bitmap_tile != NULL)
240 gfx.background_bitmap_mask |= mask;
242 gfx.background_bitmap_mask &= ~mask;
244 if (gfx.background_bitmap == NULL)
245 gfx.background_bitmap = CreateBitmap(video.width, video.height,
248 if (background_bitmap_tile == NULL) /* empty background requested */
251 if (mask == REDRAW_FIELD)
252 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
253 gfx.real_sx, gfx.real_sy,
254 gfx.full_sxsize, gfx.full_sysize);
255 else if (mask == REDRAW_DOOR_1)
257 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
259 gfx.dxsize, gfx.dysize);
263 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
265 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
268 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
270 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
274 /* ========================================================================= */
275 /* video functions */
276 /* ========================================================================= */
278 inline static int GetRealDepth(int depth)
280 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
283 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
284 int width, int height, Pixel color)
286 #if defined(TARGET_SDL)
287 SDLFillRectangle(bitmap, x, y, width, height, color);
289 X11FillRectangle(bitmap, x, y, width, height, color);
293 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
294 int src_x, int src_y, int width, int height,
295 int dst_x, int dst_y, int mask_mode)
297 #if defined(TARGET_SDL)
298 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
299 dst_x, dst_y, mask_mode);
301 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
302 dst_x, dst_y, mask_mode);
306 inline void InitVideoDisplay(void)
308 #if defined(TARGET_SDL)
309 SDLInitVideoDisplay();
311 X11InitVideoDisplay();
315 inline void CloseVideoDisplay(void)
317 KeyboardAutoRepeatOn();
319 #if defined(TARGET_SDL)
320 SDL_QuitSubSystem(SDL_INIT_VIDEO);
323 XCloseDisplay(display);
327 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
328 int width, int height, int depth,
332 video.height = height;
333 video.depth = GetRealDepth(depth);
334 video.fullscreen_available = FULLSCREEN_STATUS;
335 video.fullscreen_enabled = FALSE;
337 #if defined(TARGET_SDL)
338 SDLInitVideoBuffer(backbuffer, window, fullscreen);
340 X11InitVideoBuffer(backbuffer, window);
344 inline Bitmap *CreateBitmapStruct(void)
346 #if defined(TARGET_SDL)
347 return checked_calloc(sizeof(struct SDLSurfaceInfo));
349 return checked_calloc(sizeof(struct X11DrawableInfo));
353 inline Bitmap *CreateBitmap(int width, int height, int depth)
355 Bitmap *new_bitmap = CreateBitmapStruct();
356 int real_depth = GetRealDepth(depth);
358 #if defined(TARGET_SDL)
359 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
361 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
364 new_bitmap->width = width;
365 new_bitmap->height = height;
370 inline static void FreeBitmapPointers(Bitmap *bitmap)
375 #if defined(TARGET_SDL)
376 SDLFreeBitmapPointers(bitmap);
378 X11FreeBitmapPointers(bitmap);
381 checked_free(bitmap->source_filename);
382 bitmap->source_filename = NULL;
385 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
388 if (src_bitmap == NULL || dst_bitmap == NULL)
391 FreeBitmapPointers(dst_bitmap);
393 *dst_bitmap = *src_bitmap;
396 inline void FreeBitmap(Bitmap *bitmap)
401 FreeBitmapPointers(bitmap);
406 inline void CloseWindow(DrawWindow *window)
408 #if defined(TARGET_X11)
409 if (window->drawable)
411 XUnmapWindow(display, window->drawable);
412 XDestroyWindow(display, window->drawable);
415 XFreeGC(display, window->gc);
419 static inline boolean CheckDrawingArea(int x, int y, int width, int height,
422 if (draw_mask == REDRAW_NONE)
425 if (draw_mask & REDRAW_ALL)
428 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
431 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
434 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
440 inline boolean DrawingDeactivated(int x, int y, int width, int height)
442 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
445 inline boolean DrawingOnBackground(int x, int y)
448 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
449 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
451 return ((gfx.draw_background_mask & gfx.background_bitmap_mask) &&
452 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
456 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
457 int src_x, int src_y, int width, int height,
458 int dst_x, int dst_y)
460 if (DrawingDeactivated(dst_x, dst_y, width, height))
463 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
464 dst_x, dst_y, BLIT_OPAQUE);
467 inline 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 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
478 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
481 inline 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);
492 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
496 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
498 #if defined(TARGET_X11)
501 bitmap->clip_gc = clip_gc;
502 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
505 last_clip_gc = clip_gc;
510 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
512 #if defined(TARGET_X11)
515 bitmap->clip_gc = clip_gc;
516 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
519 last_clip_gc = clip_gc;
524 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
525 int src_x, int src_y,
526 int width, int height,
527 int dst_x, int dst_y)
529 if (DrawingDeactivated(dst_x, dst_y, width, height))
532 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
533 dst_x, dst_y, BLIT_MASKED);
536 inline void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
537 int src_x, int src_y,
538 int width, int height,
539 int dst_x, int dst_y)
541 if (DrawingOnBackground(dst_x, dst_y))
543 /* draw background */
544 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
547 /* draw foreground */
548 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
549 dst_x - src_x, dst_y - src_y);
550 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
554 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
558 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
561 #if defined(TARGET_SDL)
562 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
564 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
568 #if !defined(TARGET_X11_NATIVE)
569 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
570 int to_x, int to_y, Pixel pixel, int line_width)
574 for (x = 0; x < line_width; x++)
576 for (y = 0; y < line_width; y++)
578 int dx = x - line_width / 2;
579 int dy = y - line_width / 2;
581 if ((x == 0 && y == 0) ||
582 (x == 0 && y == line_width - 1) ||
583 (x == line_width - 1 && y == 0) ||
584 (x == line_width - 1 && y == line_width - 1))
587 #if defined(TARGET_SDL)
589 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
590 #elif defined(TARGET_ALLEGRO)
591 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
592 to_x + dx, to_y + dy, pixel);
599 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
602 #if !defined(TARGET_X11_NATIVE)
606 for (i = 0; i < num_points - 1; i++)
607 DrawLine(bitmap, points[i].x, points[i].y,
608 points[i + 1].x, points[i + 1].y, pixel, line_width);
611 SDLDrawLines(bitmap->surface, points, num_points, pixel);
614 XSetForeground(display, bitmap->line_gc[1], pixel);
615 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
616 (XPoint *)points, num_points, CoordModeOrigin);
620 inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
622 if (x < 0 || x >= bitmap->width ||
623 y < 0 || y >= bitmap->height)
626 #if defined(TARGET_SDL)
627 return SDLGetPixel(bitmap, x, y);
628 #elif defined(TARGET_ALLEGRO)
629 return AllegroGetPixel(bitmap->drawable, x, y);
631 return X11GetPixel(bitmap, x, y);
635 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
636 unsigned int color_g, unsigned int color_b)
638 #if defined(TARGET_SDL)
639 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
640 #elif defined(TARGET_ALLEGRO)
641 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
643 return X11GetPixelFromRGB(color_r, color_g, color_b);
647 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
649 unsigned int color_r = (color >> 16) & 0xff;
650 unsigned int color_g = (color >> 8) & 0xff;
651 unsigned int color_b = (color >> 0) & 0xff;
653 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
656 /* execute all pending screen drawing operations */
657 inline void FlushDisplay(void)
664 /* execute and wait for all pending screen drawing operations */
665 inline void SyncDisplay(void)
668 XSync(display, FALSE);
672 inline void KeyboardAutoRepeatOn(void)
674 #if defined(TARGET_SDL)
675 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
676 SDL_DEFAULT_REPEAT_INTERVAL / 2);
677 SDL_EnableUNICODE(1);
680 XAutoRepeatOn(display);
684 inline void KeyboardAutoRepeatOff(void)
686 #if defined(TARGET_SDL)
687 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
688 SDL_EnableUNICODE(0);
691 XAutoRepeatOff(display);
695 inline boolean PointerInWindow(DrawWindow *window)
697 #if defined(TARGET_SDL)
705 /* if XQueryPointer() returns False, the pointer
706 is not on the same screen as the specified window */
707 return XQueryPointer(display, window->drawable, &root, &child,
708 &root_x, &root_y, &win_x, &win_y, &mask);
712 inline boolean SetVideoMode(boolean fullscreen)
714 #if defined(TARGET_SDL)
715 return SDLSetVideoMode(&backbuffer, fullscreen);
717 boolean success = TRUE;
719 if (fullscreen && video.fullscreen_available)
721 Error(ERR_WARN, "fullscreen not available in X11 version");
723 /* display error message only once */
724 video.fullscreen_available = FALSE;
733 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
735 #if defined(TARGET_SDL)
736 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
737 (!fullscreen && video.fullscreen_enabled))
738 fullscreen = SetVideoMode(fullscreen);
744 Bitmap *LoadImage(char *filename)
748 #if defined(TARGET_SDL)
749 new_bitmap = SDLLoadImage(filename);
751 new_bitmap = X11LoadImage(filename);
755 new_bitmap->source_filename = getStringCopy(filename);
760 Bitmap *LoadCustomImage(char *basename)
762 char *filename = getCustomImageFilename(basename);
765 if (filename == NULL)
766 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
768 if ((new_bitmap = LoadImage(filename)) == NULL)
769 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
774 void ReloadCustomImage(Bitmap *bitmap, char *basename)
776 char *filename = getCustomImageFilename(basename);
779 if (filename == NULL) /* (should never happen) */
781 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
785 if (strcmp(filename, bitmap->source_filename) == 0)
787 /* The old and new image are the same (have the same filename and path).
788 This usually means that this image does not exist in this graphic set
789 and a fallback to the existing image is done. */
794 if ((new_bitmap = LoadImage(filename)) == NULL)
796 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
800 if (bitmap->width != new_bitmap->width ||
801 bitmap->height != new_bitmap->height)
803 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
805 FreeBitmap(new_bitmap);
809 TransferBitmapPointers(new_bitmap, bitmap);
813 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
815 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
817 #if defined(TARGET_SDL)
818 SDLZoomBitmap(src_bitmap, dst_bitmap);
820 X11ZoomBitmap(src_bitmap, dst_bitmap);
826 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
829 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_8;
830 int width_1, height_1, width_2, height_2, width_8, height_8;
831 int new_width, new_height;
833 width_1 = old_bitmap->width * zoom_factor;
834 height_1 = old_bitmap->height * zoom_factor;
835 width_2 = width_1 / 2;
836 height_2 = height_1 / 2;
837 width_8 = width_1 / 8;
838 height_8 = height_1 / 8;
840 /* get image with normal size (this might require scaling up) */
841 if (zoom_factor != 1)
842 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
844 tmp_bitmap_1 = old_bitmap;
846 /* get image with 1/2 of normal size (for use in the level editor) */
847 if (zoom_factor != 2)
848 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
850 tmp_bitmap_2 = old_bitmap;
852 /* get image with 1/8 of normal size (for use on the preview screen) */
853 if (zoom_factor != 8)
854 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_1, width_1 / 8, height_1 / 8);
856 tmp_bitmap_8 = old_bitmap;
858 /* if image was scaled up, create new clipmask for normal size image */
859 if (zoom_factor != 1)
861 #if defined(TARGET_X11)
862 if (old_bitmap->clip_mask)
863 XFreePixmap(display, old_bitmap->clip_mask);
865 old_bitmap->clip_mask =
866 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
868 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
870 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
872 if (old_bitmap->surface_masked)
873 SDL_FreeSurface(old_bitmap->surface_masked);
875 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
876 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
877 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
878 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
879 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
884 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
886 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
888 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
889 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
891 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
892 3 * width_1 / 4, height_1);
894 if (zoom_factor != 1)
895 FreeBitmap(tmp_bitmap_1);
897 if (zoom_factor != 2)
898 FreeBitmap(tmp_bitmap_2);
900 if (zoom_factor != 8)
901 FreeBitmap(tmp_bitmap_8);
905 #if defined(TARGET_SDL)
906 /* !!! what about the old old_bitmap->surface ??? FIX ME !!! */
907 old_bitmap->surface = new_bitmap->surface;
908 new_bitmap->surface = NULL;
910 /* !!! see above !!! */
911 old_bitmap->drawable = new_bitmap->drawable;
912 new_bitmap->drawable = None;
917 /* replace image with extended image (containing normal, 1/2 and 1/8 size) */
918 #if defined(TARGET_SDL)
919 swap_bitmap.surface = old_bitmap->surface;
920 old_bitmap->surface = new_bitmap->surface;
921 new_bitmap->surface = swap_bitmap.surface;
923 swap_bitmap.drawable = old_bitmap->drawable;
924 old_bitmap->drawable = new_bitmap->drawable;
925 new_bitmap->drawable = swap_bitmap.drawable;
930 old_bitmap->width = new_bitmap->width;
931 old_bitmap->height = new_bitmap->height;
933 FreeBitmap(new_bitmap);
937 /* ------------------------------------------------------------------------- */
938 /* mouse pointer functions */
939 /* ------------------------------------------------------------------------- */
941 #if !defined(PLATFORM_MSDOS)
943 static const char *cursor_image_playfield[] =
945 /* width height num_colors chars_per_pixel */
954 /* some people complained about a "white dot" on the screen and thought it
955 was a graphical error... OK, let's just remove the whole pointer :-) */
1001 #if defined(TARGET_SDL)
1002 static const int cursor_bit_order = BIT_ORDER_MSB;
1003 #elif defined(TARGET_X11_NATIVE)
1004 static const int cursor_bit_order = BIT_ORDER_LSB;
1007 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1009 struct MouseCursorInfo *cursor;
1010 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1011 int header_lines = 4;
1014 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1016 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1019 for (y = 0; y < cursor->width; y++)
1021 for (x = 0; x < cursor->height; x++)
1024 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1029 cursor->data[i] = cursor->mask[i] = 0;
1032 switch (image[header_lines + y][x])
1035 cursor->data[i] |= bit_mask;
1036 cursor->mask[i] |= bit_mask;
1040 cursor->mask[i] |= bit_mask;
1049 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1053 #endif /* !PLATFORM_MSDOS */
1055 void SetMouseCursor(int mode)
1057 #if !defined(PLATFORM_MSDOS)
1058 static struct MouseCursorInfo *cursor_playfield = NULL;
1060 if (cursor_playfield == NULL)
1061 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1063 #if defined(TARGET_SDL)
1064 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1065 #elif defined(TARGET_X11_NATIVE)
1066 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1072 /* ========================================================================= */
1073 /* audio functions */
1074 /* ========================================================================= */
1076 inline void OpenAudio(void)
1078 /* always start with reliable default values */
1079 audio.sound_available = FALSE;
1080 audio.music_available = FALSE;
1081 audio.loops_available = FALSE;
1083 audio.sound_enabled = FALSE;
1084 audio.sound_deactivated = FALSE;
1086 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1087 audio.mixer_pid = 0;
1088 audio.device_name = NULL;
1089 audio.device_fd = -1;
1091 audio.num_channels = 0;
1092 audio.music_channel = 0;
1093 audio.first_sound_channel = 0;
1095 #if defined(TARGET_SDL)
1097 #elif defined(PLATFORM_UNIX)
1099 #elif defined(PLATFORM_MSDOS)
1104 inline void CloseAudio(void)
1106 #if defined(TARGET_SDL)
1108 #elif defined(PLATFORM_UNIX)
1110 #elif defined(PLATFORM_MSDOS)
1114 audio.sound_enabled = FALSE;
1117 inline void SetAudioMode(boolean enabled)
1119 if (!audio.sound_available)
1122 audio.sound_enabled = enabled;
1126 /* ========================================================================= */
1127 /* event functions */
1128 /* ========================================================================= */
1130 inline void InitEventFilter(EventFilter filter_function)
1132 #if defined(TARGET_SDL)
1133 /* set event filter to filter out certain events */
1134 SDL_SetEventFilter(filter_function);
1138 inline boolean PendingEvent(void)
1140 #if defined(TARGET_SDL)
1141 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1143 return (XPending(display) ? TRUE : FALSE);
1147 inline void NextEvent(Event *event)
1149 #if defined(TARGET_SDL)
1150 SDLNextEvent(event);
1152 XNextEvent(display, event);
1156 inline void PeekEvent(Event *event)
1158 #if defined(TARGET_SDL)
1159 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1161 XPeekEvent(display, event);
1165 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1167 #if defined(TARGET_SDL)
1169 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1170 (int)event->keysym.unicode,
1171 (int)event->keysym.sym,
1172 (int)SDL_GetModState());
1175 if (with_modifiers &&
1176 event->keysym.unicode > 0x0000 &&
1177 event->keysym.unicode < 0x2000)
1178 return event->keysym.unicode;
1180 return event->keysym.sym;
1183 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1184 (int)XLookupKeysym(event, event->state),
1185 (int)XLookupKeysym(event, 0));
1189 return XLookupKeysym(event, event->state);
1191 return XLookupKeysym(event, 0);
1195 inline KeyMod HandleKeyModState(Key key, int key_status)
1197 static KeyMod current_modifiers = KMOD_None;
1199 #if !defined(TARGET_SDL)
1200 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1202 KeyMod new_modifier = KMOD_None;
1207 new_modifier = KMOD_Shift_L;
1210 new_modifier = KMOD_Shift_R;
1212 case KSYM_Control_L:
1213 new_modifier = KMOD_Control_L;
1215 case KSYM_Control_R:
1216 new_modifier = KMOD_Control_R;
1219 new_modifier = KMOD_Meta_L;
1222 new_modifier = KMOD_Meta_R;
1225 new_modifier = KMOD_Alt_L;
1228 new_modifier = KMOD_Alt_R;
1234 if (key_status == KEY_PRESSED)
1235 current_modifiers |= new_modifier;
1237 current_modifiers &= ~new_modifier;
1241 return current_modifiers;
1244 inline KeyMod GetKeyModState()
1246 #if defined(TARGET_SDL)
1247 return (KeyMod)SDL_GetModState();
1249 return HandleKeyModState(KSYM_UNDEFINED, 0);
1253 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1255 if (event->type != EVENT_CLIENTMESSAGE)
1258 #if defined(TARGET_SDL)
1259 return TRUE; /* the only possible message here is SDL_QUIT */
1260 #elif defined(PLATFORM_UNIX)
1261 if ((event->window == window->drawable) &&
1262 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1270 /* ========================================================================= */
1271 /* joystick functions */
1272 /* ========================================================================= */
1274 inline void InitJoysticks()
1278 #if defined(NO_JOYSTICK)
1279 return; /* joysticks generally deactivated by compile-time directive */
1282 /* always start with reliable default values */
1283 joystick.status = JOYSTICK_NOT_AVAILABLE;
1284 for (i = 0; i < MAX_PLAYERS; i++)
1285 joystick.fd[i] = -1; /* joystick device closed */
1287 #if defined(TARGET_SDL)
1289 #elif defined(PLATFORM_UNIX)
1290 UnixInitJoysticks();
1291 #elif defined(PLATFORM_MSDOS)
1292 MSDOSInitJoysticks();
1296 inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1298 #if defined(TARGET_SDL)
1299 return SDLReadJoystick(nr, x, y, b1, b2);
1300 #elif defined(PLATFORM_UNIX)
1301 return UnixReadJoystick(nr, x, y, b1, b2);
1302 #elif defined(PLATFORM_MSDOS)
1303 return MSDOSReadJoystick(nr, x, y, b1, b2);