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 static Bitmap *main_bitmap_tile = NULL;
217 static Bitmap *door_bitmap_tile = NULL;
219 if (mask == REDRAW_FIELD)
221 if (background_bitmap_tile == main_bitmap_tile)
222 return; /* main background tile has not changed */
224 main_bitmap_tile = background_bitmap_tile;
226 else if (mask == REDRAW_DOOR_1)
228 if (background_bitmap_tile == door_bitmap_tile)
229 return; /* main background tile has not changed */
231 door_bitmap_tile = background_bitmap_tile;
233 else /* should not happen */
236 if (background_bitmap_tile)
237 gfx.background_bitmap_mask |= mask;
239 gfx.background_bitmap_mask &= ~mask;
241 if (gfx.background_bitmap == NULL)
242 gfx.background_bitmap = CreateBitmap(video.width, video.height,
245 if (background_bitmap_tile == NULL) /* empty background requested */
248 if (mask == REDRAW_FIELD)
249 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
250 gfx.real_sx, gfx.real_sy,
251 gfx.full_sxsize, gfx.full_sysize);
253 DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
255 gfx.dxsize, gfx.dysize);
258 void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
260 SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
263 void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
265 SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
269 /* ========================================================================= */
270 /* video functions */
271 /* ========================================================================= */
273 inline static int GetRealDepth(int depth)
275 return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
278 inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
279 int width, int height, Pixel color)
281 #if defined(TARGET_SDL)
282 SDLFillRectangle(bitmap, x, y, width, height, color);
284 X11FillRectangle(bitmap, x, y, width, height, color);
288 inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
289 int src_x, int src_y, int width, int height,
290 int dst_x, int dst_y, int mask_mode)
292 #if defined(TARGET_SDL)
293 SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
294 dst_x, dst_y, mask_mode);
296 X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
297 dst_x, dst_y, mask_mode);
301 inline void InitVideoDisplay(void)
303 #if defined(TARGET_SDL)
304 SDLInitVideoDisplay();
306 X11InitVideoDisplay();
310 inline void CloseVideoDisplay(void)
312 KeyboardAutoRepeatOn();
314 #if defined(TARGET_SDL)
315 SDL_QuitSubSystem(SDL_INIT_VIDEO);
318 XCloseDisplay(display);
322 inline void InitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
323 int width, int height, int depth,
327 video.height = height;
328 video.depth = GetRealDepth(depth);
329 video.fullscreen_available = FULLSCREEN_STATUS;
330 video.fullscreen_enabled = FALSE;
332 #if defined(TARGET_SDL)
333 SDLInitVideoBuffer(backbuffer, window, fullscreen);
335 X11InitVideoBuffer(backbuffer, window);
339 inline Bitmap *CreateBitmapStruct(void)
341 #if defined(TARGET_SDL)
342 return checked_calloc(sizeof(struct SDLSurfaceInfo));
344 return checked_calloc(sizeof(struct X11DrawableInfo));
348 inline Bitmap *CreateBitmap(int width, int height, int depth)
350 Bitmap *new_bitmap = CreateBitmapStruct();
351 int real_depth = GetRealDepth(depth);
353 #if defined(TARGET_SDL)
354 SDLCreateBitmapContent(new_bitmap, width, height, real_depth);
356 X11CreateBitmapContent(new_bitmap, width, height, real_depth);
359 new_bitmap->width = width;
360 new_bitmap->height = height;
365 inline static void FreeBitmapPointers(Bitmap *bitmap)
370 #if defined(TARGET_SDL)
371 SDLFreeBitmapPointers(bitmap);
373 X11FreeBitmapPointers(bitmap);
376 checked_free(bitmap->source_filename);
377 bitmap->source_filename = NULL;
380 inline static void TransferBitmapPointers(Bitmap *src_bitmap,
383 if (src_bitmap == NULL || dst_bitmap == NULL)
386 FreeBitmapPointers(dst_bitmap);
388 *dst_bitmap = *src_bitmap;
391 inline void FreeBitmap(Bitmap *bitmap)
396 FreeBitmapPointers(bitmap);
401 inline void CloseWindow(DrawWindow *window)
403 #if defined(TARGET_X11)
404 if (window->drawable)
406 XUnmapWindow(display, window->drawable);
407 XDestroyWindow(display, window->drawable);
410 XFreeGC(display, window->gc);
414 static inline boolean CheckDrawingArea(int x, int y, int width, int height,
417 if (draw_mask == REDRAW_NONE)
420 if (draw_mask & REDRAW_ALL)
423 if ((draw_mask & REDRAW_FIELD) && x < gfx.real_sx + gfx.full_sxsize)
426 if ((draw_mask & REDRAW_DOOR_1) && x >= gfx.dx && y < gfx.dy + gfx.dysize)
429 if ((draw_mask & REDRAW_DOOR_2) && x >= gfx.dx && y >= gfx.vy)
435 inline boolean DrawingDeactivated(int x, int y, int width, int height)
437 return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
440 inline boolean DrawingOnBackground(int x, int y)
442 return ((gfx.draw_background_mask & gfx.background_bitmap_mask) &&
443 CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
446 inline void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
447 int src_x, int src_y, int width, int height,
448 int dst_x, int dst_y)
450 if (DrawingDeactivated(dst_x, dst_y, width, height))
453 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
454 dst_x, dst_y, BLIT_OPAQUE);
457 inline void FillRectangle(Bitmap *bitmap, int x, int y, int width, int height,
460 if (DrawingDeactivated(x, y, width, height))
463 sysFillRectangle(bitmap, x, y, width, height, color);
466 inline void ClearRectangle(Bitmap *bitmap, int x, int y, int width, int height)
468 FillRectangle(bitmap, x, y, width, height, BLACK_PIXEL);
471 inline void ClearRectangleOnBackground(Bitmap *bitmap, int x, int y,
472 int width, int height)
474 if (DrawingOnBackground(x, y))
475 BlitBitmap(gfx.background_bitmap, bitmap, x, y, width, height, x, y);
477 ClearRectangle(bitmap, x, y, width, height);
482 static GC last_clip_gc = 0; /* needed for XCopyArea() through clip mask */
486 inline void SetClipMask(Bitmap *bitmap, GC clip_gc, Pixmap clip_pixmap)
488 #if defined(TARGET_X11)
491 bitmap->clip_gc = clip_gc;
492 XSetClipMask(display, bitmap->clip_gc, clip_pixmap);
495 last_clip_gc = clip_gc;
500 inline void SetClipOrigin(Bitmap *bitmap, GC clip_gc, int clip_x, int clip_y)
502 #if defined(TARGET_X11)
505 bitmap->clip_gc = clip_gc;
506 XSetClipOrigin(display, bitmap->clip_gc, clip_x, clip_y);
509 last_clip_gc = clip_gc;
514 inline void BlitBitmapMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
515 int src_x, int src_y,
516 int width, int height,
517 int dst_x, int dst_y)
519 if (DrawingDeactivated(dst_x, dst_y, width, height))
522 sysCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
523 dst_x, dst_y, BLIT_MASKED);
526 inline void BlitBitmapOnBackground(Bitmap *src_bitmap, Bitmap *dst_bitmap,
527 int src_x, int src_y,
528 int width, int height,
529 int dst_x, int dst_y)
531 if (DrawingOnBackground(dst_x, dst_y))
533 /* draw background */
534 BlitBitmap(gfx.background_bitmap, dst_bitmap, dst_x, dst_y, width, height,
537 /* draw foreground */
538 SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
539 dst_x - src_x, dst_y - src_y);
540 BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, width, height,
544 BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, width, height,
548 inline void DrawSimpleWhiteLine(Bitmap *bitmap, int from_x, int from_y,
551 #if defined(TARGET_SDL)
552 SDLDrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
554 X11DrawSimpleLine(bitmap, from_x, from_y, to_x, to_y, WHITE_PIXEL);
558 #if !defined(TARGET_X11_NATIVE)
559 inline void DrawLine(Bitmap *bitmap, int from_x, int from_y,
560 int to_x, int to_y, Pixel pixel, int line_width)
564 for (x = 0; x < line_width; x++)
566 for (y = 0; y < line_width; y++)
568 int dx = x - line_width / 2;
569 int dy = y - line_width / 2;
571 if ((x == 0 && y == 0) ||
572 (x == 0 && y == line_width - 1) ||
573 (x == line_width - 1 && y == 0) ||
574 (x == line_width - 1 && y == line_width - 1))
577 #if defined(TARGET_SDL)
579 from_x + dx, from_y + dy, to_x + dx, to_y + dy, pixel);
580 #elif defined(TARGET_ALLEGRO)
581 AllegroDrawLine(bitmap->drawable, from_x + dx, from_y + dy,
582 to_x + dx, to_y + dy, pixel);
589 inline void DrawLines(Bitmap *bitmap, struct XY *points, int num_points,
592 #if !defined(TARGET_X11_NATIVE)
596 for (i = 0; i < num_points - 1; i++)
597 DrawLine(bitmap, points[i].x, points[i].y,
598 points[i + 1].x, points[i + 1].y, pixel, line_width);
601 SDLDrawLines(bitmap->surface, points, num_points, pixel);
604 XSetForeground(display, bitmap->line_gc[1], pixel);
605 XDrawLines(display, bitmap->drawable, bitmap->line_gc[1],
606 (XPoint *)points, num_points, CoordModeOrigin);
610 inline Pixel GetPixel(Bitmap *bitmap, int x, int y)
612 if (x < 0 || x >= bitmap->width ||
613 y < 0 || y >= bitmap->height)
616 #if defined(TARGET_SDL)
617 return SDLGetPixel(bitmap, x, y);
618 #elif defined(TARGET_ALLEGRO)
619 return AllegroGetPixel(bitmap->drawable, x, y);
621 return X11GetPixel(bitmap, x, y);
625 inline Pixel GetPixelFromRGB(Bitmap *bitmap, unsigned int color_r,
626 unsigned int color_g, unsigned int color_b)
628 #if defined(TARGET_SDL)
629 return SDL_MapRGB(bitmap->surface->format, color_r, color_g, color_b);
630 #elif defined(TARGET_ALLEGRO)
631 return AllegroAllocColorCell(color_r << 8, color_g << 8, color_b << 8);
633 return X11GetPixelFromRGB(color_r, color_g, color_b);
637 inline Pixel GetPixelFromRGBcompact(Bitmap *bitmap, unsigned int color)
639 unsigned int color_r = (color >> 16) & 0xff;
640 unsigned int color_g = (color >> 8) & 0xff;
641 unsigned int color_b = (color >> 0) & 0xff;
643 return GetPixelFromRGB(bitmap, color_r, color_g, color_b);
646 /* execute all pending screen drawing operations */
647 inline void FlushDisplay(void)
654 /* execute and wait for all pending screen drawing operations */
655 inline void SyncDisplay(void)
658 XSync(display, FALSE);
662 inline void KeyboardAutoRepeatOn(void)
664 #if defined(TARGET_SDL)
665 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY / 2,
666 SDL_DEFAULT_REPEAT_INTERVAL / 2);
667 SDL_EnableUNICODE(1);
670 XAutoRepeatOn(display);
674 inline void KeyboardAutoRepeatOff(void)
676 #if defined(TARGET_SDL)
677 SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
678 SDL_EnableUNICODE(0);
681 XAutoRepeatOff(display);
685 inline boolean PointerInWindow(DrawWindow *window)
687 #if defined(TARGET_SDL)
695 /* if XQueryPointer() returns False, the pointer
696 is not on the same screen as the specified window */
697 return XQueryPointer(display, window->drawable, &root, &child,
698 &root_x, &root_y, &win_x, &win_y, &mask);
702 inline boolean SetVideoMode(boolean fullscreen)
704 #if defined(TARGET_SDL)
705 return SDLSetVideoMode(&backbuffer, fullscreen);
707 boolean success = TRUE;
709 if (fullscreen && video.fullscreen_available)
711 Error(ERR_WARN, "fullscreen not available in X11 version");
713 /* display error message only once */
714 video.fullscreen_available = FALSE;
723 inline boolean ChangeVideoModeIfNeeded(boolean fullscreen)
725 #if defined(TARGET_SDL)
726 if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
727 (!fullscreen && video.fullscreen_enabled))
728 fullscreen = SetVideoMode(fullscreen);
734 Bitmap *LoadImage(char *filename)
738 #if defined(TARGET_SDL)
739 new_bitmap = SDLLoadImage(filename);
741 new_bitmap = X11LoadImage(filename);
745 new_bitmap->source_filename = getStringCopy(filename);
750 Bitmap *LoadCustomImage(char *basename)
752 char *filename = getCustomImageFilename(basename);
755 if (filename == NULL)
756 Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
758 if ((new_bitmap = LoadImage(filename)) == NULL)
759 Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
764 void ReloadCustomImage(Bitmap *bitmap, char *basename)
766 char *filename = getCustomImageFilename(basename);
769 if (filename == NULL) /* (should never happen) */
771 Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
775 if (strcmp(filename, bitmap->source_filename) == 0)
777 /* The old and new image are the same (have the same filename and path).
778 This usually means that this image does not exist in this graphic set
779 and a fallback to the existing image is done. */
784 if ((new_bitmap = LoadImage(filename)) == NULL)
786 Error(ERR_WARN, "LoadImage() failed: %s", GetError());
790 if (bitmap->width != new_bitmap->width ||
791 bitmap->height != new_bitmap->height)
793 Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
795 FreeBitmap(new_bitmap);
799 TransferBitmapPointers(new_bitmap, bitmap);
803 Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
805 Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
807 #if defined(TARGET_SDL)
808 SDLZoomBitmap(src_bitmap, dst_bitmap);
810 X11ZoomBitmap(src_bitmap, dst_bitmap);
816 void CreateBitmapWithSmallBitmaps(Bitmap *old_bitmap, int zoom_factor)
819 Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_8;
820 int width_1, height_1, width_2, height_2, width_8, height_8;
821 int new_width, new_height;
823 width_1 = old_bitmap->width * zoom_factor;
824 height_1 = old_bitmap->height * zoom_factor;
825 width_2 = width_1 / 2;
826 height_2 = height_1 / 2;
827 width_8 = width_1 / 8;
828 height_8 = height_1 / 8;
830 /* get image with normal size (this might require scaling up) */
831 if (zoom_factor != 1)
832 tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
834 tmp_bitmap_1 = old_bitmap;
836 /* get image with 1/2 of normal size (for use in the level editor) */
837 if (zoom_factor != 2)
838 tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
840 tmp_bitmap_2 = old_bitmap;
842 /* get image with 1/8 of normal size (for use on the preview screen) */
843 if (zoom_factor != 8)
844 tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_1, width_1 / 8, height_1 / 8);
846 tmp_bitmap_8 = old_bitmap;
848 /* if image was scaled up, create new clipmask for normal size image */
849 if (zoom_factor != 1)
851 #if defined(TARGET_X11)
852 if (old_bitmap->clip_mask)
853 XFreePixmap(display, old_bitmap->clip_mask);
855 old_bitmap->clip_mask =
856 Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
858 XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
860 SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
862 if (old_bitmap->surface_masked)
863 SDL_FreeSurface(old_bitmap->surface_masked);
865 SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
866 SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
867 if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
868 Error(ERR_EXIT, "SDL_DisplayFormat() failed");
869 SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
874 new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
876 new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
878 BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
879 BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
881 BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
882 3 * width_1 / 4, height_1);
884 if (zoom_factor != 1)
885 FreeBitmap(tmp_bitmap_1);
887 if (zoom_factor != 2)
888 FreeBitmap(tmp_bitmap_2);
890 if (zoom_factor != 8)
891 FreeBitmap(tmp_bitmap_8);
895 #if defined(TARGET_SDL)
896 /* !!! what about the old old_bitmap->surface ??? FIX ME !!! */
897 old_bitmap->surface = new_bitmap->surface;
898 new_bitmap->surface = NULL;
900 /* !!! see above !!! */
901 old_bitmap->drawable = new_bitmap->drawable;
902 new_bitmap->drawable = None;
907 /* replace image with extended image (containing normal, 1/2 and 1/8 size) */
908 #if defined(TARGET_SDL)
909 swap_bitmap.surface = old_bitmap->surface;
910 old_bitmap->surface = new_bitmap->surface;
911 new_bitmap->surface = swap_bitmap.surface;
913 swap_bitmap.drawable = old_bitmap->drawable;
914 old_bitmap->drawable = new_bitmap->drawable;
915 new_bitmap->drawable = swap_bitmap.drawable;
920 old_bitmap->width = new_bitmap->width;
921 old_bitmap->height = new_bitmap->height;
923 FreeBitmap(new_bitmap);
927 /* ------------------------------------------------------------------------- */
928 /* mouse pointer functions */
929 /* ------------------------------------------------------------------------- */
931 #if !defined(PLATFORM_MSDOS)
933 static const char *cursor_image_playfield[] =
935 /* width height num_colors chars_per_pixel */
944 /* some people complained about a "white dot" on the screen and thought it
945 was a graphical error... OK, let's just remove the whole pointer :-) */
991 #if defined(TARGET_SDL)
992 static const int cursor_bit_order = BIT_ORDER_MSB;
993 #elif defined(TARGET_X11_NATIVE)
994 static const int cursor_bit_order = BIT_ORDER_LSB;
997 static struct MouseCursorInfo *get_cursor_from_image(const char **image)
999 struct MouseCursorInfo *cursor;
1000 boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
1001 int header_lines = 4;
1004 cursor = checked_calloc(sizeof(struct MouseCursorInfo));
1006 sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
1009 for (y = 0; y < cursor->width; y++)
1011 for (x = 0; x < cursor->height; x++)
1014 int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
1019 cursor->data[i] = cursor->mask[i] = 0;
1022 switch (image[header_lines + y][x])
1025 cursor->data[i] |= bit_mask;
1026 cursor->mask[i] |= bit_mask;
1030 cursor->mask[i] |= bit_mask;
1039 sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
1043 #endif /* !PLATFORM_MSDOS */
1045 void SetMouseCursor(int mode)
1047 #if !defined(PLATFORM_MSDOS)
1048 static struct MouseCursorInfo *cursor_playfield = NULL;
1050 if (cursor_playfield == NULL)
1051 cursor_playfield = get_cursor_from_image(cursor_image_playfield);
1053 #if defined(TARGET_SDL)
1054 SDLSetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1055 #elif defined(TARGET_X11_NATIVE)
1056 X11SetMouseCursor(mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
1062 /* ========================================================================= */
1063 /* audio functions */
1064 /* ========================================================================= */
1066 inline void OpenAudio(void)
1068 /* always start with reliable default values */
1069 audio.sound_available = FALSE;
1070 audio.music_available = FALSE;
1071 audio.loops_available = FALSE;
1073 audio.sound_enabled = FALSE;
1074 audio.sound_deactivated = FALSE;
1076 audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
1077 audio.mixer_pid = 0;
1078 audio.device_name = NULL;
1079 audio.device_fd = -1;
1081 audio.num_channels = 0;
1082 audio.music_channel = 0;
1083 audio.first_sound_channel = 0;
1085 #if defined(TARGET_SDL)
1087 #elif defined(PLATFORM_UNIX)
1089 #elif defined(PLATFORM_MSDOS)
1094 inline void CloseAudio(void)
1096 #if defined(TARGET_SDL)
1098 #elif defined(PLATFORM_UNIX)
1100 #elif defined(PLATFORM_MSDOS)
1104 audio.sound_enabled = FALSE;
1107 inline void SetAudioMode(boolean enabled)
1109 if (!audio.sound_available)
1112 audio.sound_enabled = enabled;
1116 /* ========================================================================= */
1117 /* event functions */
1118 /* ========================================================================= */
1120 inline void InitEventFilter(EventFilter filter_function)
1122 #if defined(TARGET_SDL)
1123 /* set event filter to filter out certain events */
1124 SDL_SetEventFilter(filter_function);
1128 inline boolean PendingEvent(void)
1130 #if defined(TARGET_SDL)
1131 return (SDL_PollEvent(NULL) ? TRUE : FALSE);
1133 return (XPending(display) ? TRUE : FALSE);
1137 inline void NextEvent(Event *event)
1139 #if defined(TARGET_SDL)
1140 SDLNextEvent(event);
1142 XNextEvent(display, event);
1146 inline Key GetEventKey(KeyEvent *event, boolean with_modifiers)
1148 #if defined(TARGET_SDL)
1150 printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
1151 (int)event->keysym.unicode,
1152 (int)event->keysym.sym,
1153 (int)SDL_GetModState());
1156 if (with_modifiers &&
1157 event->keysym.unicode > 0x0000 &&
1158 event->keysym.unicode < 0x2000)
1159 return event->keysym.unicode;
1161 return event->keysym.sym;
1164 printf("with modifiers == '0x%04x', without modifiers == '0x%04x'\n",
1165 (int)XLookupKeysym(event, event->state),
1166 (int)XLookupKeysym(event, 0));
1170 return XLookupKeysym(event, event->state);
1172 return XLookupKeysym(event, 0);
1176 inline KeyMod HandleKeyModState(Key key, int key_status)
1178 static KeyMod current_modifiers = KMOD_None;
1180 #if !defined(TARGET_SDL)
1181 if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
1183 KeyMod new_modifier = KMOD_None;
1188 new_modifier = KMOD_Shift_L;
1191 new_modifier = KMOD_Shift_R;
1193 case KSYM_Control_L:
1194 new_modifier = KMOD_Control_L;
1196 case KSYM_Control_R:
1197 new_modifier = KMOD_Control_R;
1200 new_modifier = KMOD_Meta_L;
1203 new_modifier = KMOD_Meta_R;
1206 new_modifier = KMOD_Alt_L;
1209 new_modifier = KMOD_Alt_R;
1215 if (key_status == KEY_PRESSED)
1216 current_modifiers |= new_modifier;
1218 current_modifiers &= ~new_modifier;
1222 return current_modifiers;
1225 inline KeyMod GetKeyModState()
1227 #if defined(TARGET_SDL)
1228 return (KeyMod)SDL_GetModState();
1230 return HandleKeyModState(KSYM_UNDEFINED, 0);
1234 inline boolean CheckCloseWindowEvent(ClientMessageEvent *event)
1236 if (event->type != EVENT_CLIENTMESSAGE)
1239 #if defined(TARGET_SDL)
1240 return TRUE; /* the only possible message here is SDL_QUIT */
1241 #elif defined(PLATFORM_UNIX)
1242 if ((event->window == window->drawable) &&
1243 (event->data.l[0] == XInternAtom(display, "WM_DELETE_WINDOW", FALSE)))
1251 /* ========================================================================= */
1252 /* joystick functions */
1253 /* ========================================================================= */
1255 inline void InitJoysticks()
1259 #if defined(NO_JOYSTICK)
1260 return; /* joysticks generally deactivated by compile-time directive */
1263 /* always start with reliable default values */
1264 joystick.status = JOYSTICK_NOT_AVAILABLE;
1265 for (i = 0; i < MAX_PLAYERS; i++)
1266 joystick.fd[i] = -1; /* joystick device closed */
1268 #if defined(TARGET_SDL)
1270 #elif defined(PLATFORM_UNIX)
1271 UnixInitJoysticks();
1272 #elif defined(PLATFORM_MSDOS)
1273 MSDOSInitJoysticks();
1277 inline boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
1279 #if defined(TARGET_SDL)
1280 return SDLReadJoystick(nr, x, y, b1, b2);
1281 #elif defined(PLATFORM_UNIX)
1282 return UnixReadJoystick(nr, x, y, b1, b2);
1283 #elif defined(PLATFORM_MSDOS)
1284 return MSDOSReadJoystick(nr, x, y, b1, b2);