+ program.sdl_icon_filename = sdl_icon_filename;
+ program.msdos_cursor_filename = msdos_cursor_filename;
+
+ program.cookie_prefix = cookie_prefix;
+ program.filename_prefix = filename_prefix;
+
+ program.version_major = VERSION_MAJOR(program_version);
+ program.version_minor = VERSION_MINOR(program_version);
+ program.version_patch = VERSION_PATCH(program_version);
+
+ program.error_filename = getErrorFilename(ERROR_BASENAME);
+ program.error_file = stderr;
+}
+
+void InitExitFunction(void (*exit_function)(int))
+{
+ program.exit_function = exit_function;
+
+ /* set signal handlers to custom exit function */
+ signal(SIGINT, exit_function);
+ signal(SIGTERM, exit_function);
+
+#if defined(TARGET_SDL)
+ /* set exit function to automatically cleanup SDL stuff after exit() */
+ atexit(SDL_Quit);
+#endif
+}
+
+void InitPlatformDependentStuff(void)
+{
+#if defined(PLATFORM_MSDOS)
+ _fmode = O_BINARY;
+#endif
+
+#if defined(PLATFORM_MACOSX)
+ updateUserGameDataDir();
+#endif
+
+#if !defined(PLATFORM_UNIX) || defined(PLATFORM_MACOSX)
+ openErrorFile();
+#endif
+
+#if defined(TARGET_SDL)
+ if (SDL_Init(SDL_INIT_EVENTTHREAD | SDL_INIT_NOPARACHUTE) < 0)
+ Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
+
+ SDLNet_Init();
+#endif
+}
+
+void ClosePlatformDependentStuff(void)
+{
+#if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
+ closeErrorFile();
+#endif
+
+#if defined(PLATFORM_MSDOS)
+ dumpErrorFile();
+#endif
+}
+
+void InitGfxFieldInfo(int sx, int sy, int sxsize, int sysize,
+ int real_sx, int real_sy,
+ int full_sxsize, int full_sysize,
+ Bitmap *field_save_buffer)
+{
+ gfx.sx = sx;
+ gfx.sy = sy;
+ gfx.sxsize = sxsize;
+ gfx.sysize = sysize;
+ gfx.real_sx = real_sx;
+ gfx.real_sy = real_sy;
+ gfx.full_sxsize = full_sxsize;
+ gfx.full_sysize = full_sysize;
+
+ gfx.field_save_buffer = field_save_buffer;
+
+#if 0
+ gfx.background_bitmap = NULL;
+ gfx.background_bitmap_mask = REDRAW_NONE;
+#endif
+
+ SetDrawDeactivationMask(REDRAW_NONE); /* do not deactivate drawing */
+ SetDrawBackgroundMask(REDRAW_NONE); /* deactivate masked drawing */
+}
+
+void InitGfxDoor1Info(int dx, int dy, int dxsize, int dysize)
+{
+ gfx.dx = dx;
+ gfx.dy = dy;
+ gfx.dxsize = dxsize;
+ gfx.dysize = dysize;
+}
+
+void InitGfxDoor2Info(int vx, int vy, int vxsize, int vysize)
+{
+ gfx.vx = vx;
+ gfx.vy = vy;
+ gfx.vxsize = vxsize;
+ gfx.vysize = vysize;
+}
+
+void InitGfxWindowInfo(int win_xsize, int win_ysize)
+{
+ gfx.win_xsize = win_xsize;
+ gfx.win_ysize = win_ysize;
+
+#if 1
+ gfx.background_bitmap_mask = REDRAW_NONE;
+
+ ReCreateBitmap(&gfx.background_bitmap, win_xsize, win_ysize, DEFAULT_DEPTH);
+#endif
+}
+
+void InitGfxScrollbufferInfo(int scrollbuffer_width, int scrollbuffer_height)
+{
+ /* currently only used by MSDOS code to alloc VRAM buffer, if available */
+ /* 2009-03-24: also (temporarily?) used for overlapping blit workaround */
+ gfx.scrollbuffer_width = scrollbuffer_width;
+ gfx.scrollbuffer_height = scrollbuffer_height;
+}
+
+void InitGfxClipRegion(boolean enabled, int x, int y, int width, int height)
+{
+ gfx.clipping_enabled = enabled;
+ gfx.clip_x = x;
+ gfx.clip_y = y;
+ gfx.clip_width = width;
+ gfx.clip_height = height;
+}
+
+void InitGfxDrawBusyAnimFunction(void (*draw_busy_anim_function)(void))
+{
+ gfx.draw_busy_anim_function = draw_busy_anim_function;
+}
+
+void InitGfxCustomArtworkInfo()
+{
+ gfx.override_level_graphics = FALSE;
+ gfx.override_level_sounds = FALSE;
+ gfx.override_level_music = FALSE;
+
+ gfx.draw_init_text = TRUE;
+}
+
+void SetDrawDeactivationMask(int draw_deactivation_mask)
+{
+ gfx.draw_deactivation_mask = draw_deactivation_mask;
+}
+
+void SetDrawBackgroundMask(int draw_background_mask)
+{
+ gfx.draw_background_mask = draw_background_mask;
+}
+
+#if 0
+
+static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
+ int dest_x, int dest_y, int width, int height)
+{
+ int bitmap_xsize = width;
+ int bitmap_ysize = height;
+ int tile_xsize = tile->width;
+ int tile_ysize = tile->height;
+ int tile_xsteps = (bitmap_xsize + tile_xsize - 1) / tile_xsize;
+ int tile_ysteps = (bitmap_ysize + tile_ysize - 1) / tile_ysize;
+ int x, y;
+
+ for (y = 0; y < tile_ysteps; y++)
+ {
+ for (x = 0; x < tile_xsteps; x++)
+ {
+ int draw_x = dest_x + x * tile_xsize;
+ int draw_y = dest_y + y * tile_ysize;
+ int draw_xsize = MIN(tile_xsize, bitmap_xsize - x * tile_xsize);
+ int draw_ysize = MIN(tile_ysize, bitmap_ysize - y * tile_ysize);
+
+ BlitBitmap(tile, bitmap, 0, 0, draw_xsize, draw_ysize, draw_x, draw_y);
+ }
+ }
+}
+
+void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
+{
+ if (background_bitmap_tile != NULL)
+ gfx.background_bitmap_mask |= mask;
+ else
+ gfx.background_bitmap_mask &= ~mask;
+
+#if 0
+ if (gfx.background_bitmap == NULL)
+ gfx.background_bitmap = CreateBitmap(video.width, video.height,
+ DEFAULT_DEPTH);
+#endif
+
+ if (background_bitmap_tile == NULL) /* empty background requested */
+ return;
+
+ if (mask == REDRAW_ALL)
+ DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
+ 0, 0, video.width, video.height);
+ else if (mask == REDRAW_FIELD)
+ DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
+ gfx.real_sx, gfx.real_sy,
+ gfx.full_sxsize, gfx.full_sysize);
+ else if (mask == REDRAW_DOOR_1)
+ {
+ DrawBitmapFromTile(gfx.background_bitmap, background_bitmap_tile,
+ gfx.dx, gfx.dy,
+ gfx.dxsize, gfx.dysize);
+ }
+}
+
+#else
+
+void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
+{
+ if (background_bitmap_tile != NULL)
+ gfx.background_bitmap_mask |= mask;
+ else
+ gfx.background_bitmap_mask &= ~mask;
+
+#if 0
+ if (gfx.background_bitmap == NULL)
+ gfx.background_bitmap = CreateBitmap(video.width, video.height,
+ DEFAULT_DEPTH);
+#endif
+
+ if (background_bitmap_tile == NULL) /* empty background requested */
+ return;
+
+ if (mask == REDRAW_ALL)
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ 0, 0, video.width, video.height);
+ else if (mask == REDRAW_FIELD)
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ gfx.real_sx, gfx.real_sy, gfx.full_sxsize, gfx.full_sysize);
+ else if (mask == REDRAW_DOOR_1)
+ {
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ gfx.dx, gfx.dy, gfx.dxsize, gfx.dysize);
+ }
+}
+
+#endif
+
+void SetWindowBackgroundBitmap(Bitmap *background_bitmap_tile)
+{
+ /* remove every mask before setting mask for window */
+ /* (!!! TO BE FIXED: The whole REDRAW_* system really sucks! !!!) */
+ SetBackgroundBitmap(NULL, 0xffff); /* !!! FIX THIS !!! */
+ SetBackgroundBitmap(background_bitmap_tile, REDRAW_ALL);
+}
+
+void SetMainBackgroundBitmap(Bitmap *background_bitmap_tile)
+{
+ /* remove window area mask before setting mask for main area */
+ /* (!!! TO BE FIXED: The whole REDRAW_* system really sucks! !!!) */
+ SetBackgroundBitmap(NULL, REDRAW_ALL); /* !!! FIX THIS !!! */
+ SetBackgroundBitmap(background_bitmap_tile, REDRAW_FIELD);
+}
+
+void SetDoorBackgroundBitmap(Bitmap *background_bitmap_tile)
+{
+ /* remove window area mask before setting mask for door area */
+ /* (!!! TO BE FIXED: The whole REDRAW_* system really sucks! !!!) */
+ SetBackgroundBitmap(NULL, REDRAW_ALL); /* !!! FIX THIS !!! */
+ SetBackgroundBitmap(background_bitmap_tile, REDRAW_DOOR_1);
+}
+
+
+/* ========================================================================= */
+/* video functions */
+/* ========================================================================= */
+
+inline static int GetRealDepth(int depth)
+{
+ return (depth == DEFAULT_DEPTH ? video.default_depth : depth);
+}
+
+inline static void sysFillRectangle(Bitmap *bitmap, int x, int y,
+ int width, int height, Pixel color)
+{
+#if defined(TARGET_SDL)
+ SDLFillRectangle(bitmap, x, y, width, height, color);
+#else
+ X11FillRectangle(bitmap, x, y, width, height, color);
+#endif
+}
+
+inline static void sysCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y, int mask_mode)
+{
+#if defined(TARGET_SDL)
+ SDLCopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
+ dst_x, dst_y, mask_mode);
+#else
+ X11CopyArea(src_bitmap, dst_bitmap, src_x, src_y, width, height,
+ dst_x, dst_y, mask_mode);
+#endif
+}
+
+void InitVideoDisplay(void)
+{
+#if defined(TARGET_SDL)
+ SDLInitVideoDisplay();
+#else
+ X11InitVideoDisplay();
+#endif
+}
+
+void CloseVideoDisplay(void)
+{
+ KeyboardAutoRepeatOn();
+
+#if defined(TARGET_SDL)
+ SDL_QuitSubSystem(SDL_INIT_VIDEO);
+#else
+ if (display)
+ XCloseDisplay(display);
+#endif
+}
+
+void InitVideoBuffer(int width, int height, int depth, boolean fullscreen)
+{
+ video.width = width;
+ video.height = height;
+ video.depth = GetRealDepth(depth);
+
+ video.fullscreen_available = FULLSCREEN_STATUS;
+ video.fullscreen_enabled = FALSE;
+#if 0
+ video.fullscreen_mode_current = NULL;
+ video.fullscreen_modes = NULL;
+#endif
+
+#if defined(TARGET_SDL)
+ SDLInitVideoBuffer(&backbuffer, &window, fullscreen);
+#else
+ X11InitVideoBuffer(&backbuffer, &window);
+#endif
+
+ drawto = backbuffer;
+}
+
+inline static void FreeBitmapPointers(Bitmap *bitmap)
+{
+ if (bitmap == NULL)
+ return;
+
+#if defined(TARGET_SDL)
+ SDLFreeBitmapPointers(bitmap);
+#else
+ X11FreeBitmapPointers(bitmap);
+#endif
+
+ checked_free(bitmap->source_filename);
+ bitmap->source_filename = NULL;
+}
+
+inline static void TransferBitmapPointers(Bitmap *src_bitmap,
+ Bitmap *dst_bitmap)
+{
+ if (src_bitmap == NULL || dst_bitmap == NULL)
+ return;
+
+ FreeBitmapPointers(dst_bitmap);
+
+ *dst_bitmap = *src_bitmap;
+}
+
+void FreeBitmap(Bitmap *bitmap)
+{
+ if (bitmap == NULL)
+ return;
+
+ FreeBitmapPointers(bitmap);
+
+ free(bitmap);
+}
+
+Bitmap *CreateBitmapStruct(void)
+{
+#if defined(TARGET_SDL)
+ return checked_calloc(sizeof(struct SDLSurfaceInfo));
+#else
+ return checked_calloc(sizeof(struct X11DrawableInfo));
+#endif
+}
+
+Bitmap *CreateBitmap(int width, int height, int depth)
+{
+ Bitmap *new_bitmap = CreateBitmapStruct();
+ int real_width = MAX(1, width); /* prevent zero bitmap width */
+ int real_height = MAX(1, height); /* prevent zero bitmap height */
+ int real_depth = GetRealDepth(depth);
+
+#if defined(TARGET_SDL)
+ SDLCreateBitmapContent(new_bitmap, real_width, real_height, real_depth);
+#else
+ X11CreateBitmapContent(new_bitmap, real_width, real_height, real_depth);
+#endif
+
+ new_bitmap->width = real_width;
+ new_bitmap->height = real_height;
+
+ return new_bitmap;
+}
+
+void ReCreateBitmap(Bitmap **bitmap, int width, int height, int depth)
+{
+ Bitmap *new_bitmap = CreateBitmap(width, height, depth);
+
+ if (*bitmap == NULL)
+ {
+ *bitmap = new_bitmap;
+ }
+ else
+ {
+ TransferBitmapPointers(new_bitmap, *bitmap);
+ free(new_bitmap);
+ }
+}
+
+void CloseWindow(DrawWindow *window)
+{
+#if defined(TARGET_X11)
+ X11CloseWindow(window);
+#endif
+}
+
+inline static boolean CheckDrawingArea(int x, int y, int width, int height,
+ int draw_mask)
+{
+ if (draw_mask == REDRAW_NONE)
+ return FALSE;
+
+ if (draw_mask & REDRAW_ALL)
+ return TRUE;
+
+ if ((draw_mask & REDRAW_FIELD) &&
+ x >= gfx.real_sx && x < gfx.real_sx + gfx.full_sxsize)
+ return TRUE;
+
+ if ((draw_mask & REDRAW_DOOR_1) &&
+ x >= gfx.dx && y < gfx.dy + gfx.dysize)
+ return TRUE;
+
+ if ((draw_mask & REDRAW_DOOR_2) &&
+ x >= gfx.dx && y >= gfx.vy)
+ return TRUE;
+
+ return FALSE;
+}
+
+boolean DrawingDeactivated(int x, int y, int width, int height)
+{
+ return CheckDrawingArea(x, y, width, height, gfx.draw_deactivation_mask);
+}
+
+boolean DrawingOnBackground(int x, int y)
+{
+ return (CheckDrawingArea(x, y, 1, 1, gfx.background_bitmap_mask) &&
+ CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
+}
+
+static boolean InClippedRectangle(Bitmap *bitmap, int *x, int *y,
+ int *width, int *height, boolean is_dest)
+{
+#if 1
+ int clip_x, clip_y, clip_width, clip_height;
+
+ if (gfx.clipping_enabled && is_dest) /* only clip destination bitmap */
+ {
+ clip_x = MIN(MAX(0, gfx.clip_x), bitmap->width);
+ clip_y = MIN(MAX(0, gfx.clip_y), bitmap->height);
+ clip_width = MIN(MAX(0, gfx.clip_width), bitmap->width - clip_x);
+ clip_height = MIN(MAX(0, gfx.clip_height), bitmap->height - clip_y);
+ }
+ else
+ {
+ clip_x = 0;
+ clip_y = 0;
+ clip_width = bitmap->width;
+ clip_height = bitmap->height;
+ }
+
+ /* skip if rectangle completely outside bitmap */
+
+ if (*x + *width <= clip_x ||
+ *y + *height <= clip_y ||
+ *x >= clip_x + clip_width ||
+ *y >= clip_y + clip_height)
+ return FALSE;
+
+ /* clip if rectangle overlaps bitmap */
+
+ if (*x < clip_x)
+ {
+ *width -= clip_x - *x;
+ *x = clip_x;
+ }
+ else if (*x + *width > clip_x + clip_width)
+ {
+ *width = clip_x + clip_width - *x;
+ }
+
+ if (*y < clip_y)
+ {
+ *height -= clip_y - *y;
+ *y = clip_y;
+ }
+ else if (*y + *height > clip_y + clip_height)
+ {
+ *height = clip_y + clip_height - *y;
+ }
+
+ return TRUE;
+
+#else
+
+ /* skip if rectangle completely outside bitmap */
+
+ if (*x + *width <= 0 ||
+ *y + *height <= 0 ||
+ *x >= bitmap->width ||
+ *y >= bitmap->height)
+ return FALSE;
+
+ /* clip if rectangle overlaps bitmap */
+
+ if (*x < 0)
+ {
+ *width += *x;
+ *x = 0;
+ }
+ else if (*x + *width > bitmap->width)
+ {
+ *width = bitmap->width - *x;
+ }
+
+ if (*y < 0)
+ {
+ *height += *y;
+ *y = 0;
+ }
+ else if (*y + *height > bitmap->height)
+ {
+ *height = bitmap->height - *y;
+ }
+
+ return TRUE;
+#endif
+}
+
+void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ int dst_x_unclipped = dst_x;
+ int dst_y_unclipped = dst_y;
+
+ if (DrawingDeactivated(dst_x, dst_y, width, height))
+ return;
+
+#if 1
+ if (!InClippedRectangle(src_bitmap, &src_x, &src_y, &width, &height, FALSE) ||
+ !InClippedRectangle(dst_bitmap, &dst_x, &dst_y, &width, &height, TRUE))
+ return;
+
+ /* source x/y might need adjustment if destination x/y was clipped top/left */
+ src_x += dst_x - dst_x_unclipped;
+ src_y += dst_y - dst_y_unclipped;
+
+#else
+ /* skip if rectangle starts outside bitmap */
+ if (src_x >= src_bitmap->width ||
+ src_y >= src_bitmap->height ||
+ dst_x >= dst_bitmap->width ||
+ dst_y >= dst_bitmap->height)
+ return;
+
+ /* clip if rectangle overlaps bitmap */
+ if (src_x + width > src_bitmap->width)
+ width = src_bitmap->width - src_x;
+ if (src_y + height > src_bitmap->height)
+ height = src_bitmap->height - src_y;
+ if (dst_x + width > dst_bitmap->width)
+ width = dst_bitmap->width - dst_x;
+ if (dst_y + height > dst_bitmap->height)
+ height = dst_bitmap->height - dst_y;
+#endif
+
+#if 0
+ /* !!! 2009-03-30: Fixed by using self-compiled, patched SDL.dll !!! */
+ /* (This bug still exists in the actual (as of 2009-06-15) version 1.2.13,
+ but is already fixed in SVN and should therefore finally be fixed with
+ the next official SDL release, which is probably version 1.2.14.) */
+#if 1
+ /* !!! 2009-03-24: It seems that this problem still exists in 1.2.12 !!! */
+#if defined(TARGET_SDL) && defined(PLATFORM_WIN32)
+ if (src_bitmap == dst_bitmap)
+ {
+ /* !!! THIS IS A BUG (IN THE SDL LIBRARY?) AND SHOULD BE FIXED !!! */
+
+ /* needed when blitting directly to same bitmap -- should not be needed with
+ recent SDL libraries, but apparently does not work in 1.2.11 directly */
+
+ static Bitmap *tmp_bitmap = NULL;
+ static int tmp_bitmap_xsize = 0;
+ static int tmp_bitmap_ysize = 0;
+
+ /* start with largest static bitmaps for initial bitmap size ... */
+ if (tmp_bitmap_xsize == 0 && tmp_bitmap_ysize == 0)
+ {
+ tmp_bitmap_xsize = MAX(gfx.win_xsize, gfx.scrollbuffer_width);
+ tmp_bitmap_ysize = MAX(gfx.win_ysize, gfx.scrollbuffer_height);
+ }
+
+ /* ... and allow for later re-adjustments due to custom artwork bitmaps */
+ if (src_bitmap->width > tmp_bitmap_xsize ||
+ src_bitmap->height > tmp_bitmap_ysize)
+ {
+ tmp_bitmap_xsize = MAX(tmp_bitmap_xsize, src_bitmap->width);
+ tmp_bitmap_ysize = MAX(tmp_bitmap_ysize, src_bitmap->height);
+
+ FreeBitmap(tmp_bitmap);
+
+ tmp_bitmap = NULL;
+ }
+
+ if (tmp_bitmap == NULL)
+ tmp_bitmap = CreateBitmap(tmp_bitmap_xsize, tmp_bitmap_ysize,
+ DEFAULT_DEPTH);
+
+ sysCopyArea(src_bitmap, tmp_bitmap,
+ src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+ sysCopyArea(tmp_bitmap, dst_bitmap,
+ dst_x, dst_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+
+ return;
+ }
+#endif
+#endif
+#endif
+
+#if 0
+ if (dst_x < gfx.sx + gfx.sxsize)
+ printf("::: %d: BlitBitmap(%d, %d, %d, %d)\n",
+ FrameCounter, dst_x, dst_y, width, height);
+#endif
+
+ sysCopyArea(src_bitmap, dst_bitmap,
+ src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
+}
+
+void BlitBitmapTiled(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int src_width, int src_height,
+ int dst_x, int dst_y, int dst_width, int dst_height)
+{
+ int src_xsize = (src_width == 0 ? src_bitmap->width : src_width);
+ int src_ysize = (src_height == 0 ? src_bitmap->height : src_height);
+ int dst_xsize = dst_width;
+ int dst_ysize = dst_height;
+ int src_xsteps = (dst_xsize + src_xsize - 1) / src_xsize;
+ int src_ysteps = (dst_ysize + src_ysize - 1) / src_ysize;
+ int x, y;
+
+ for (y = 0; y < src_ysteps; y++)
+ {
+ for (x = 0; x < src_xsteps; x++)
+ {
+ int draw_x = dst_x + x * src_xsize;
+ int draw_y = dst_y + y * src_ysize;
+ int draw_xsize = MIN(src_xsize, dst_xsize - x * src_xsize);
+ int draw_ysize = MIN(src_ysize, dst_ysize - y * src_ysize);
+
+ BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, draw_xsize, draw_ysize,
+ draw_x, draw_y);
+ }
+ }