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 void InitVideoDisplay(void)
286 #if defined(TARGET_SDL)
287 SDLInitVideoDisplay();
289 X11InitVideoDisplay();
293 void CloseVideoDisplay(void)
295 KeyboardAutoRepeatOn();
297 #if defined(TARGET_SDL)
298 SDL_QuitSubSystem(SDL_INIT_VIDEO);
301 XCloseDisplay(display);
305 void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
306 int width, int height, int depth, boolean fullscreen)
309 video.height = height;
310 video.depth = GetRealDepth(depth);
311 video.fullscreen_available = FULLSCREEN_STATUS;
312 video.fullscreen_enabled = FALSE;
314 #if defined(TARGET_SDL)
315 SDLInitVideoBuffer(backbuffer, window, fullscreen);
317 X11InitVideoBuffer(backbuffer, window);
321 Bitmap *CreateBitmapStruct(void)
323 #if defined(TARGET_SDL)
324 return checked_calloc(sizeof(struct SDLSurfaceInfo));
326 return checked_calloc(sizeof(struct X11DrawableInfo));
330 Bitmap *CreateBitmap(int width, int height, int depth)
332 Bitmap *new_bitmap = CreateBitmapStruct();
333 int real_depth = GetRealDepth(depth);
335 #if defined(TARGET_SDL)
336 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
338 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
341 new_bitmap->width = width;
342 new_bitmap->height = height;
347 inline static void FreeBitmapPointers(Bitmap *bitmap)
352 #if defined(TARGET_SDL)
353 SDLFreeBitmapPointers(bitmap);
355 X11FreeBitmapPointers(bitmap);
358 checked_free(bitmap->source_filename);
359 bitmap->source_filename = NULL;
362 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
365 if (src_bitmap == NULL || dst_bitmap == NULL)
368 FreeBitmapPointers(dst_bitmap);
370 *dst_bitmap = *src_bitmap;
373 void FreeBitmap(Bitmap *bitmap)
378 FreeBitmapPointers(bitmap);
383 void CloseWindow(DrawWindow *window)
385 #if defined(TARGET_X11)
386 if (window->drawable)
388 XUnmapWindow(display, window->drawable);
389 XDestroyWindow(display, window->drawable);
392 XFreeGC(display, window->gc);
396 inline static boolean CheckDrawingArea(int x, int y, int width, int height,
399 if (draw_mask == REDRAW_NONE)
402 if (draw_mask & REDRAW_ALL)
405 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
408 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
411 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
417 boolean DrawingDeactivated(int x, int y, int width, int height)
419 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
422 boolean DrawingOnBackground(int x, int y)
424 return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
425 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
428 void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
429 int src_x, int src_y, int width, int height,
430 int dst_x, int dst_y)
432 if (DrawingDeactivated(dst_x, dst_y, width, height))
435 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
436 dst_x, dst_y, BLIT_OPAQUE);
439 void FadeScreen(Bitmap *bitmap_cross, int fade_mode, int fade_delay,
442 #if defined(TARGET_SDL)
443 SDLFadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
445 X11FadeScreen(bitmap_cross, fade_mode, fade_delay, post_delay);
449 void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
452 if (DrawingDeactivated(x, y, width, height))
455 sysFillRectangle(bitmap, x, y, width, height, color);
458 void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
460 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
463 void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
464 int width, int height)
466 if (DrawingOnBackground(x, y))
467 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
469 ClearRectangle(bitmap, x, y, width, height);
472 void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
474 #if defined(TARGET_X11)
477 bitmap->clip_gc = clip_gc;
478 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
483 void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
485 #if defined(TARGET_X11)
488 bitmap->clip_gc = clip_gc;
489 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
494 void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
495 int src_x, int src_y, int width, int height,
496 int dst_x, int dst_y)
498 if (DrawingDeactivated(dst_x, dst_y, width, height))
501 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
502 dst_x, dst_y, BLIT_MASKED);
505 void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
506 int src_x, int src_y, int width, int height,
507 int dst_x, int dst_y)
509 if (DrawingOnBackground(dst_x, dst_y))
511 /* draw background */
512 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
515 /* draw foreground */
516 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
517 dst_x - src_x, dst_y - src_y);
518 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
522 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
526 void DrawSimpleBlackLine(Bitmap *bitmap, int from_x, int from_y,
529 #if defined(TARGET_SDL)
530 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
532 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, BLACK_PIXEL);
536 void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
539 #if defined(TARGET_SDL)
540 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
542 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
546 #if !defined(TARGET_X11_NATIVE)
547 void DrawLine(Bitmap *bitmap, int from_x, int from_y,
548 int to_x, int to_y, Pixel pixel, int line_width)
552 for (x = 0; x < line_width; x++)
554 for (y = 0; y < line_width; y++)
556 int dx = x - line_width / 2;
557 int dy = y - line_width / 2;
559 if ((x == 0 && y == 0) ||
560 (x == 0 && y == line_width - 1) ||
561 (x == line_width - 1 && y == 0) ||
562 (x == line_width - 1 && y == line_width - 1))
565 #if defined(TARGET_SDL)
567 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
568 #elif defined(TARGET_ALLEGRO)
569 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
570 to_x + dx, to_y + dy, pixel);
577 void DrawLines(Bitmap *bitmap, struct XY *points, int num_points, Pixel pixel)
579 #if !defined(TARGET_X11_NATIVE)
583 for (i = 0; i < num_points - 1; i++)
584 DrawLine(bitmap, points[i].x, points[i].y,
585 points[i + 1].x, points[i + 1].y, pixel, line_width);
588 SDLDrawLines(bitmap->surface, points, num_points, pixel);
591 XSetForeground(display, bitmap->line_gc[1], pixel);
592 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
593 (XPoint *)points, num_points, CoordModeOrigin);
597 Pixel GetPixel(Bitmap *bitmap, int x, int y)
599 if (x < 0 || x >= bitmap->width ||
600 y < 0 || y >= bitmap->height)
603 #if defined(TARGET_SDL)
604 return SDLGetPixel(bitmap, x, y);
605 #elif defined(TARGET_ALLEGRO)
606 return AllegroGetPixel(bitmap->drawable, x, y);
608 return X11GetPixel(bitmap, x, y);
612 Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
613 unsigned int color_g, unsigned int color_b)
615 #if defined(TARGET_SDL)
616 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
617 #elif defined(TARGET_ALLEGRO)
618 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
620 return X11GetPixelFromRGB(color_r, color_g, color_b);
624 Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
626 unsigned int color_r = (color >> 16) & 0xff;
627 unsigned int color_g = (color >> 8) & 0xff;
628 unsigned int color_b = (color >> 0) & 0xff;
630 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
633 /* execute all pending screen drawing operations */
634 void FlushDisplay(void)
641 /* execute and wait for all pending screen drawing operations */
642 void SyncDisplay(void)
645 XSync(display, FALSE);
649 void KeyboardAutoRepeatOn(void)
651 #if defined(TARGET_SDL)
652 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
653 SDL_DEFAULT_REPEAT_INTERVAL / 2);
654 SDL_EnableUNICODE(1);
657 XAutoRepeatOn(display);
661 void KeyboardAutoRepeatOff(void)
663 #if defined(TARGET_SDL)
664 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
665 SDL_EnableUNICODE(0);
668 XAutoRepeatOff(display);
672 boolean PointerInWindow(DrawWindow *window)
674 #if defined(TARGET_SDL)
682 /* if XQueryPointer() returns False, the pointer
683 is not on the same screen as the specified window */
684 return XQueryPointer(display, window->drawable, &root, &child,
685 &root_x, &root_y, &win_x, &win_y, &mask);
689 boolean SetVideoMode(boolean fullscreen)
691 #if defined(TARGET_SDL)
692 return SDLSetVideoMode(&backbuffer, fullscreen);
694 boolean success = TRUE;
696 if (fullscreen && video.fullscreen_available)
698 Error(ERR_WARN, "fullscreen not available in X11 version");
700 /* display error message only once */
701 video.fullscreen_available = FALSE;
710 boolean ChangeVideoModeIfNeeded(boolean fullscreen)
712 #if defined(TARGET_SDL)
713 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
714 (!fullscreen && video.fullscreen_enabled))
715 fullscreen = SetVideoMode(fullscreen);
721 Bitmap *LoadImage(char *filename)
725 #if defined(TARGET_SDL)
726 new_bitmap = SDLLoadImage(filename);
728 new_bitmap = X11LoadImage(filename);
732 new_bitmap->source_filename = getStringCopy(filename);
737 Bitmap *LoadCustomImage(char *basename)
739 char *filename = getCustomImageFilename(basename);
742 if (filename == NULL)
743 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
745 if ((new_bitmap = LoadImage(filename)) == NULL)
746 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
751 void ReloadCustomImage(Bitmap *bitmap, char *basename)
753 char *filename = getCustomImageFilename(basename);
756 if (filename == NULL) /* (should never happen) */
758 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
762 if (strEqual(filename, bitmap->source_filename))
764 /* The old and new image are the same (have the same filename and path).
765 This usually means that this image does not exist in this graphic set
766 and a fallback to the existing image is done. */
771 if ((new_bitmap = LoadImage(filename)) == NULL)
773 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
777 if (bitmap->width != new_bitmap->width ||
778 bitmap->height != new_bitmap->height)
780 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
782 FreeBitmap(new_bitmap);
786 TransferBitmapPointers(new_bitmap, bitmap);
790 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
792 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
794 #if defined(TARGET_SDL)
795 SDLZoomBitmap(src_bitmap, dst_bitmap);
797 X11ZoomBitmap(src_bitmap, dst_bitmap);
803 static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
804 boolean create_small_bitmaps)
807 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_8;
808 int width_1, height_1, width_2, height_2, width_8, height_8;
809 int new_width, new_height;
811 /* calculate new image dimensions for normal sized image */
812 width_1 = old_bitmap->width * zoom_factor;
813 height_1 = old_bitmap->height * zoom_factor;
815 /* get image with normal size (this might require scaling up) */
816 if (zoom_factor != 1)
817 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
819 tmp_bitmap_1 = old_bitmap;
821 /* this is only needed to make compilers happy */
822 tmp_bitmap_2 = tmp_bitmap_8 = NULL;
824 if (create_small_bitmaps)
826 /* calculate new image dimensions for small images */
827 width_2 = width_1 / 2;
828 height_2 = height_1 / 2;
829 width_8 = width_1 / 8;
830 height_8 = height_1 / 8;
832 /* get image with 1/2 of normal size (for use in the level editor) */
833 if (zoom_factor != 2)
834 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
836 tmp_bitmap_2 = old_bitmap;
838 /* get image with 1/8 of normal size (for use on the preview screen) */
839 if (zoom_factor != 8)
840 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_1, width_1 / 8, height_1 / 8);
842 tmp_bitmap_8 = old_bitmap;
845 /* if image was scaled up, create new clipmask for normal size image */
846 if (zoom_factor != 1)
848 #if defined(TARGET_X11)
849 if (old_bitmap->clip_mask)
850 XFreePixmap(display, old_bitmap->clip_mask);
852 old_bitmap->clip_mask =
853 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
855 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
857 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
859 if (old_bitmap->surface_masked)
860 SDL_FreeSurface(old_bitmap->surface_masked);
862 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
863 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
864 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
865 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
866 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
870 if (create_small_bitmaps)
873 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
875 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
877 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
878 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
880 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
881 3 * width_1 / 4, height_1);
886 new_height = height_1;
888 new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
891 if (create_small_bitmaps)
893 /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
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);
904 /* replace image with extended image (containing normal, 1/2 and 1/8 size) */
905 #if defined(TARGET_SDL)
906 swap_bitmap.surface = old_bitmap->surface;
907 old_bitmap->surface = new_bitmap->surface;
908 new_bitmap->surface = swap_bitmap.surface;
910 swap_bitmap.drawable = old_bitmap->drawable;
911 old_bitmap->drawable = new_bitmap->drawable;
912 new_bitmap->drawable = swap_bitmap.drawable;
915 old_bitmap->width = new_bitmap->width;
916 old_bitmap->height = new_bitmap->height;
918 FreeBitmap(new_bitmap); /* this actually frees the _old_ bitmap now */
921 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
923 CreateScaledBitmaps(old_bitmap, zoom_factor, TRUE);
926 void ScaleBitmap(Bitmap *old_bitmap, int zoom_factor)
928 CreateScaledBitmaps(old_bitmap, zoom_factor, FALSE);
932 /* ------------------------------------------------------------------------- */
933 /* mouse pointer functions */
934 /* ------------------------------------------------------------------------- */
936 #if !defined(PLATFORM_MSDOS)
938 static const char *cursor_image_playfield[] =
940 /* width height num_colors chars_per_pixel */
949 /* some people complained about a "white dot" on the screen and thought it
950 was a graphical error... OK, let's just remove the whole pointer :-) */
998 #if defined(TARGET_SDL)
999 static const int cursor_bit_order = BIT_ORDER_MSB;
1000 #elif defined(TARGET_X11_NATIVE)
1001 static const int cursor_bit_order = BIT_ORDER_LSB;
1004 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
1006 struct MouseCursorInfo *cursor;
1007 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1008 int header_lines = 4;
1011 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1013 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1016 for (y = 0; y < cursor->width; y++)
1018 for (x = 0; x < cursor->height; x++)
1021 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1026 cursor->data[i] = cursor->mask[i] = 0;
1029 switch (image[header_lines + y][x])
1032 cursor->data[i] |= bit_mask;
1033 cursor->mask[i] |= bit_mask;
1037 cursor->mask[i] |= bit_mask;
1046 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1050 #endif /* !PLATFORM_MSDOS */
1052 void SetMouseCursor(int mode)
1054 #if !defined(PLATFORM_MSDOS)
1055 static struct MouseCursorInfo *cursor_playfield = NULL;
1057 if (cursor_playfield == NULL)
1058 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1060 #if defined(TARGET_SDL)
1061 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1062 #elif defined(TARGET_X11_NATIVE)
1063 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1069 /* ========================================================================= */
1070 /* audio functions */
1071 /* ========================================================================= */
1073 void OpenAudio(void)
1075 /* always start with reliable default values */
1076 audio.sound_available = FALSE;
1077 audio.music_available = FALSE;
1078 audio.loops_available = FALSE;
1080 audio.sound_enabled = FALSE;
1081 audio.sound_deactivated = FALSE;
1083 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1084 audio.mixer_pid = 0;
1085 audio.device_name = NULL;
1086 audio.device_fd = -1;
1088 audio.num_channels = 0;
1089 audio.music_channel = 0;
1090 audio.first_sound_channel = 0;
1092 #if defined(TARGET_SDL)
1094 #elif defined(PLATFORM_UNIX)
1096 #elif defined(PLATFORM_MSDOS)
1101 void CloseAudio(void)
1103 #if defined(TARGET_SDL)
1105 #elif defined(PLATFORM_UNIX)
1107 #elif defined(PLATFORM_MSDOS)
1111 audio.sound_enabled = FALSE;
1114 void SetAudioMode(boolean enabled)
1116 if (!audio.sound_available)
1119 audio.sound_enabled = enabled;
1123 /* ========================================================================= */
1124 /* event functions */
1125 /* ========================================================================= */
1127 void InitEventFilter(EventFilter filter_function)
1129 #if defined(TARGET_SDL)
1130 /* set event filter to filter out certain events */
1131 SDL_SetEventFilter(filter_function);
1135 boolean PendingEvent(void)
1137 #if defined(TARGET_SDL)
1138 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1140 return (XPending(display) ? TRUE : FALSE);
1144 void NextEvent(Event *event)
1146 #if defined(TARGET_SDL)
1147 SDLNextEvent(event);
1149 XNextEvent(display, event);
1153 void PeekEvent(Event *event)
1155 #if defined(TARGET_SDL)
1156 SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
1158 XPeekEvent(display, event);
1162 Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1164 #if defined(TARGET_SDL)
1167 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1168 (int)event->keysym.unicode,
1169 (int)event->keysym.sym,
1170 (int)SDL_GetModState());
1173 if (with_modifiers &&
1174 event->keysym.unicode > 0x0000 &&
1175 event->keysym.unicode < 0x2000)
1176 return event->keysym.unicode;
1178 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 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 KeyMod GetKeyModState()
1246 #if defined(TARGET_SDL)
1247 return (KeyMod)SDL_GetModState();
1249 return HandleKeyModState(KSYM_UNDEFINED, 0);
1253 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 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 for (i = 0; i < MAX_PLAYERS; i++)
1297 printf("::: Joystick for player %d: %d\n", i, joystick.fd[i]);
1301 boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1303 #if defined(TARGET_SDL)
1304 return SDLReadJoystick(nr, x, y, b1, b2);
1305 #elif defined(PLATFORM_UNIX)
1306 return UnixReadJoystick(nr, x, y, b1, b2);
1307 #elif defined(PLATFORM_MSDOS)
1308 return MSDOSReadJoystick(nr, x, y, b1, b2);