+
+void KeyboardAutoRepeatOff(void)
+{
+#if defined(TARGET_SDL2)
+ keyrepeat_status = FALSE;
+#else
+ SDL_EnableKeyRepeat(0, SDL_DEFAULT_REPEAT_INTERVAL);
+ SDL_EnableUNICODE(0);
+#endif
+}
+
+boolean SetVideoMode(boolean fullscreen)
+{
+ return SDLSetVideoMode(fullscreen);
+}
+
+void SetVideoFrameDelay(unsigned int frame_delay_value)
+{
+ video.frame_delay_value = frame_delay_value;
+}
+
+unsigned int GetVideoFrameDelay()
+{
+ return video.frame_delay_value;
+}
+
+boolean ChangeVideoModeIfNeeded(boolean fullscreen)
+{
+ if ((fullscreen && !video.fullscreen_enabled && video.fullscreen_available)||
+ (!fullscreen && video.fullscreen_enabled))
+ fullscreen = SetVideoMode(fullscreen);
+
+ return fullscreen;
+}
+
+Bitmap *LoadImage(char *filename)
+{
+ Bitmap *new_bitmap;
+
+ new_bitmap = SDLLoadImage(filename);
+
+ if (new_bitmap)
+ new_bitmap->source_filename = getStringCopy(filename);
+
+ return new_bitmap;
+}
+
+Bitmap *LoadCustomImage(char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL)
+ Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ Error(ERR_EXIT, "LoadImage('%s') failed: %s", basename, GetError());
+
+ return new_bitmap;
+}
+
+void ReloadCustomImage(Bitmap *bitmap, char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL) /* (should never happen) */
+ {
+ Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
+ return;
+ }
+
+ if (strEqual(filename, bitmap->source_filename))
+ {
+ /* The old and new image are the same (have the same filename and path).
+ This usually means that this image does not exist in this graphic set
+ and a fallback to the existing image is done. */
+
+ return;
+ }
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ {
+ Error(ERR_WARN, "LoadImage('%s') failed: %s", basename, GetError());
+ return;
+ }
+
+ if (bitmap->width != new_bitmap->width ||
+ bitmap->height != new_bitmap->height)
+ {
+ Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
+ filename);
+ FreeBitmap(new_bitmap);
+ return;
+ }
+
+ TransferBitmapPointers(new_bitmap, bitmap);
+ free(new_bitmap);
+}
+
+static Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
+{
+ return SDLZoomBitmap(src_bitmap, zoom_width, zoom_height);
+}
+
+void ReCreateGameTileSizeBitmap(Bitmap **bitmaps)
+{
+ if (bitmaps[IMG_BITMAP_CUSTOM])
+ {
+ FreeBitmap(bitmaps[IMG_BITMAP_CUSTOM]);
+
+ bitmaps[IMG_BITMAP_CUSTOM] = NULL;
+ }
+
+ if (gfx.game_tile_size == gfx.standard_tile_size)
+ {
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_STANDARD];
+
+ return;
+ }
+
+ Bitmap *bitmap = bitmaps[IMG_BITMAP_STANDARD];
+ int width = bitmap->width * gfx.game_tile_size / gfx.standard_tile_size;;
+ int height = bitmap->height * gfx.game_tile_size / gfx.standard_tile_size;;
+
+ Bitmap *bitmap_new = ZoomBitmap(bitmap, width, height);
+
+ bitmaps[IMG_BITMAP_CUSTOM] = bitmap_new;
+ bitmaps[IMG_BITMAP_GAME] = bitmap_new;
+}
+
+static void CreateScaledBitmaps(Bitmap **bitmaps, int zoom_factor,
+ int tile_size, boolean create_small_bitmaps)
+{
+ Bitmap *old_bitmap = bitmaps[IMG_BITMAP_STANDARD];
+ Bitmap *tmp_bitmap_final = NULL;
+ Bitmap *tmp_bitmap_0 = NULL;
+ Bitmap *tmp_bitmap_1 = NULL;
+ Bitmap *tmp_bitmap_2 = NULL;
+ Bitmap *tmp_bitmap_4 = NULL;
+ Bitmap *tmp_bitmap_8 = NULL;
+ Bitmap *tmp_bitmap_16 = NULL;
+ Bitmap *tmp_bitmap_32 = NULL;
+ int width_final, height_final;
+ int width_0, height_0;
+ int width_1, height_1;
+ int width_2, height_2;
+ int width_4, height_4;
+ int width_8, height_8;
+ int width_16, height_16;
+ int width_32, height_32;
+ int old_width, old_height;
+ int i;
+
+ print_timestamp_init("CreateScaledBitmaps");
+
+ old_width = old_bitmap->width;
+ old_height = old_bitmap->height;
+
+ /* calculate new image dimensions for final image size */
+ width_final = old_width * zoom_factor;
+ height_final = old_height * zoom_factor;
+
+ /* get image with final size (this might require scaling up) */
+ /* ("final" size may result in non-standard tile size image) */
+ if (zoom_factor != 1)
+ tmp_bitmap_final = ZoomBitmap(old_bitmap, width_final, height_final);
+ else
+ tmp_bitmap_final = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+
+ width_0 = width_1 = width_final;
+ height_0 = height_1 = height_final;
+
+ tmp_bitmap_0 = tmp_bitmap_1 = tmp_bitmap_final;
+
+ if (create_small_bitmaps)
+ {
+ /* check if we have a non-gameplay tile size image */
+ if (tile_size != gfx.game_tile_size)
+ {
+ /* get image with gameplay tile size */
+ width_0 = width_final * gfx.game_tile_size / tile_size;
+ height_0 = height_final * gfx.game_tile_size / tile_size;
+
+ if (width_0 == old_width)
+ tmp_bitmap_0 = old_bitmap;
+ else if (width_0 == width_final)
+ tmp_bitmap_0 = tmp_bitmap_final;
+ else
+ tmp_bitmap_0 = ZoomBitmap(old_bitmap, width_0, height_0);
+
+ UPDATE_BUSY_STATE();
+ }
+
+ /* check if we have a non-standard tile size image */
+ if (tile_size != gfx.standard_tile_size)
+ {
+ /* get image with standard tile size */
+ width_1 = width_final * gfx.standard_tile_size / tile_size;
+ height_1 = height_final * gfx.standard_tile_size / tile_size;
+
+ if (width_1 == old_width)
+ tmp_bitmap_1 = old_bitmap;
+ else if (width_1 == width_final)
+ tmp_bitmap_1 = tmp_bitmap_final;
+ else if (width_1 == width_0)
+ tmp_bitmap_1 = tmp_bitmap_0;
+ else
+ tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
+
+ UPDATE_BUSY_STATE();
+ }
+
+ /* calculate new image dimensions for small images */
+ width_2 = width_1 / 2;
+ height_2 = height_1 / 2;
+ width_4 = width_1 / 4;
+ height_4 = height_1 / 4;
+ width_8 = width_1 / 8;
+ height_8 = height_1 / 8;
+ width_16 = width_1 / 16;
+ height_16 = height_1 / 16;
+ width_32 = width_1 / 32;
+ height_32 = height_1 / 32;
+
+ /* get image with 1/2 of normal size (for use in the level editor) */
+ if (width_2 == old_width)
+ tmp_bitmap_2 = old_bitmap;
+ else
+ tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_2, height_2);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/4 of normal size (for use in the level editor) */
+ if (width_4 == old_width)
+ tmp_bitmap_4 = old_bitmap;
+ else
+ tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_4, height_4);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/8 of normal size (for use on the preview screen) */
+ if (width_8 == old_width)
+ tmp_bitmap_8 = old_bitmap;
+ else
+ tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_8, height_8);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/16 of normal size (for use on the preview screen) */
+ if (width_16 == old_width)
+ tmp_bitmap_16 = old_bitmap;
+ else
+ tmp_bitmap_16 = ZoomBitmap(tmp_bitmap_8, width_16, height_16);
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/32 of normal size (for use on the preview screen) */
+ if (width_32 == old_width)
+ tmp_bitmap_32 = old_bitmap;
+ else
+ tmp_bitmap_32 = ZoomBitmap(tmp_bitmap_16, width_32, height_32);
+
+ UPDATE_BUSY_STATE();
+
+ bitmaps[IMG_BITMAP_32x32] = tmp_bitmap_1;
+ bitmaps[IMG_BITMAP_16x16] = tmp_bitmap_2;
+ bitmaps[IMG_BITMAP_8x8] = tmp_bitmap_4;
+ bitmaps[IMG_BITMAP_4x4] = tmp_bitmap_8;
+ bitmaps[IMG_BITMAP_2x2] = tmp_bitmap_16;
+ bitmaps[IMG_BITMAP_1x1] = tmp_bitmap_32;
+
+ if (width_0 != width_1)
+ bitmaps[IMG_BITMAP_CUSTOM] = tmp_bitmap_0;
+
+ if (bitmaps[IMG_BITMAP_CUSTOM])
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_CUSTOM];
+ else
+ bitmaps[IMG_BITMAP_GAME] = bitmaps[IMG_BITMAP_STANDARD];
+
+ boolean free_old_bitmap = TRUE;
+
+ for (i = 0; i < NUM_IMG_BITMAPS; i++)
+ if (bitmaps[i] == old_bitmap)
+ free_old_bitmap = FALSE;
+
+ if (free_old_bitmap)
+ FreeBitmap(old_bitmap);
+ }
+ else
+ {
+ bitmaps[IMG_BITMAP_32x32] = tmp_bitmap_1;
+ }
+
+ UPDATE_BUSY_STATE();
+
+ print_timestamp_done("CreateScaledBitmaps");
+}
+
+void CreateBitmapWithSmallBitmaps(Bitmap **bitmaps, int zoom_factor,
+ int tile_size)
+{
+ CreateScaledBitmaps(bitmaps, zoom_factor, tile_size, TRUE);
+}
+
+void CreateBitmapTextures(Bitmap **bitmaps)
+{
+ SDLCreateBitmapTextures(bitmaps[IMG_BITMAP_STANDARD]);
+}
+
+void FreeBitmapTextures(Bitmap **bitmaps)
+{
+ SDLFreeBitmapTextures(bitmaps[IMG_BITMAP_STANDARD]);
+}
+
+void ScaleBitmap(Bitmap **bitmaps, int zoom_factor)
+{
+ CreateScaledBitmaps(bitmaps, zoom_factor, 0, FALSE);
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* mouse pointer functions */
+/* ------------------------------------------------------------------------- */
+
+#define USE_ONE_PIXEL_PLAYFIELD_MOUSEPOINTER 0
+
+/* XPM image definitions */
+static const char *cursor_image_none[] =
+{
+ /* width height num_colors chars_per_pixel */
+ " 16 16 3 1",
+
+ /* colors */
+ "X c #000000",
+ ". c #ffffff",
+ " c None",
+
+ /* pixels */
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+
+ /* hot spot */
+ "0,0"
+};
+
+#if USE_ONE_PIXEL_PLAYFIELD_MOUSEPOINTER
+static const char *cursor_image_dot[] =
+{
+ /* width height num_colors chars_per_pixel */
+ " 16 16 3 1",
+
+ /* colors */
+ "X c #000000",
+ ". c #ffffff",
+ " c None",
+
+ /* pixels */
+ " X ",
+ "X.X ",
+ " X ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+
+ /* hot spot */
+ "1,1"
+};
+static const char **cursor_image_playfield = cursor_image_dot;
+#else
+/* some people complained about a "white dot" on the screen and thought it
+ was a graphical error... OK, let's just remove the whole pointer :-) */
+static const char **cursor_image_playfield = cursor_image_none;
+#endif
+
+static const int cursor_bit_order = BIT_ORDER_MSB;
+
+static struct MouseCursorInfo *get_cursor_from_image(const char **image)
+{
+ struct MouseCursorInfo *cursor;
+ boolean bit_order_msb = (cursor_bit_order == BIT_ORDER_MSB);
+ int header_lines = 4;
+ int x, y, i;
+
+ cursor = checked_calloc(sizeof(struct MouseCursorInfo));
+
+ sscanf(image[0], " %d %d ", &cursor->width, &cursor->height);
+
+ i = -1;
+ for (y = 0; y < cursor->width; y++)
+ {
+ for (x = 0; x < cursor->height; x++)
+ {
+ int bit_nr = x % 8;
+ int bit_mask = 0x01 << (bit_order_msb ? 7 - bit_nr : bit_nr );
+
+ if (bit_nr == 0)
+ {
+ i++;
+ cursor->data[i] = cursor->mask[i] = 0;
+ }
+
+ switch (image[header_lines + y][x])
+ {
+ case 'X':
+ cursor->data[i] |= bit_mask;
+ cursor->mask[i] |= bit_mask;
+ break;
+
+ case '.':
+ cursor->mask[i] |= bit_mask;
+ break;
+
+ case ' ':
+ break;
+ }
+ }
+ }
+
+ sscanf(image[header_lines + y], "%d,%d", &cursor->hot_x, &cursor->hot_y);
+
+ return cursor;
+}
+
+void SetMouseCursor(int mode)
+{
+ static struct MouseCursorInfo *cursor_none = NULL;
+ static struct MouseCursorInfo *cursor_playfield = NULL;
+ struct MouseCursorInfo *cursor_new;
+
+ if (cursor_none == NULL)
+ cursor_none = get_cursor_from_image(cursor_image_none);
+
+ if (cursor_playfield == NULL)
+ cursor_playfield = get_cursor_from_image(cursor_image_playfield);
+
+ cursor_new = (mode == CURSOR_DEFAULT ? NULL :
+ mode == CURSOR_NONE ? cursor_none :
+ mode == CURSOR_PLAYFIELD ? cursor_playfield : NULL);
+
+ SDLSetMouseCursor(cursor_new);
+
+ gfx.cursor_mode = mode;
+}
+
+
+/* ========================================================================= */
+/* audio functions */
+/* ========================================================================= */
+
+void OpenAudio(void)
+{
+ /* always start with reliable default values */
+ audio.sound_available = FALSE;
+ audio.music_available = FALSE;
+ audio.loops_available = FALSE;
+
+ audio.sound_enabled = FALSE;
+ audio.sound_deactivated = FALSE;
+
+ audio.mixer_pipe[0] = audio.mixer_pipe[1] = 0;
+ audio.mixer_pid = 0;
+ audio.device_name = NULL;
+ audio.device_fd = -1;
+
+ audio.num_channels = 0;
+ audio.music_channel = 0;
+ audio.first_sound_channel = 0;
+
+ SDLOpenAudio();
+}
+
+void CloseAudio(void)
+{
+ SDLCloseAudio();
+
+ audio.sound_enabled = FALSE;
+}
+
+void SetAudioMode(boolean enabled)
+{
+ if (!audio.sound_available)
+ return;
+
+ audio.sound_enabled = enabled;
+}
+
+
+/* ========================================================================= */
+/* event functions */
+/* ========================================================================= */
+
+boolean PendingEvent(void)
+{
+ return (SDL_PollEvent(NULL) ? TRUE : FALSE);
+}
+
+void NextEvent(Event *event)
+{
+ SDLNextEvent(event);
+}
+
+void PeekEvent(Event *event)
+{
+#if defined(TARGET_SDL2)
+ SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT);
+#else
+ SDL_PeepEvents(event, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
+#endif
+}
+
+Key GetEventKey(KeyEvent *event, boolean with_modifiers)
+{
+#if defined(TARGET_SDL2)
+ /* key up/down events in SDL2 do not return text characters anymore */
+ return event->keysym.sym;
+#else
+
+#if ENABLE_UNUSED_CODE
+ printf("unicode == '%d', sym == '%d', mod == '0x%04x'\n",
+ (int)event->keysym.unicode,
+ (int)event->keysym.sym,
+ (int)SDL_GetModState());
+#endif
+
+ if (with_modifiers &&
+ event->keysym.unicode > 0x0000 &&
+ event->keysym.unicode < 0x2000)
+ return event->keysym.unicode;
+ else
+ return event->keysym.sym;
+
+#endif
+}
+
+KeyMod HandleKeyModState(Key key, int key_status)
+{
+ static KeyMod current_modifiers = KMOD_None;
+
+ if (key != KSYM_UNDEFINED) /* new key => check for modifier key change */
+ {
+ KeyMod new_modifier = KMOD_None;
+
+ switch(key)
+ {
+ case KSYM_Shift_L:
+ new_modifier = KMOD_Shift_L;
+ break;
+ case KSYM_Shift_R:
+ new_modifier = KMOD_Shift_R;
+ break;
+ case KSYM_Control_L:
+ new_modifier = KMOD_Control_L;
+ break;
+ case KSYM_Control_R:
+ new_modifier = KMOD_Control_R;
+ break;
+ case KSYM_Meta_L:
+ new_modifier = KMOD_Meta_L;
+ break;
+ case KSYM_Meta_R:
+ new_modifier = KMOD_Meta_R;
+ break;
+ case KSYM_Alt_L:
+ new_modifier = KMOD_Alt_L;
+ break;
+ case KSYM_Alt_R:
+ new_modifier = KMOD_Alt_R;
+ break;
+ default:
+ break;
+ }
+
+ if (key_status == KEY_PRESSED)
+ current_modifiers |= new_modifier;
+ else
+ current_modifiers &= ~new_modifier;
+ }
+
+ return current_modifiers;
+}
+
+KeyMod GetKeyModState()
+{
+ return (KeyMod)SDL_GetModState();
+}
+
+KeyMod GetKeyModStateFromEvents()
+{
+ /* always use key modifier state as tracked from key events (this is needed
+ if the modifier key event was injected into the event queue, but the key
+ was not really pressed on keyboard -- SDL_GetModState() seems to directly
+ query the keys as held pressed on the keyboard) -- this case is currently
+ only used to filter out clipboard insert events from "True X-Mouse" tool */
+
+ return HandleKeyModState(KSYM_UNDEFINED, 0);
+}
+
+void StartTextInput(int x, int y, int width, int height)
+{
+#if defined(TARGET_SDL2)
+#if defined(HAS_SCREEN_KEYBOARD)
+ SDL_StartTextInput();
+
+ if (y + height > SCREEN_KEYBOARD_POS(video.height))
+ {
+ video.shifted_up_pos = y + height - SCREEN_KEYBOARD_POS(video.height);
+ video.shifted_up_delay = SDL_GetTicks();
+ video.shifted_up = TRUE;
+ }
+#endif
+#endif
+}
+
+void StopTextInput()
+{
+#if defined(TARGET_SDL2)
+#if defined(HAS_SCREEN_KEYBOARD)
+ SDL_StopTextInput();
+
+ if (video.shifted_up)
+ {
+ video.shifted_up_pos = 0;
+ video.shifted_up_delay = SDL_GetTicks();
+ video.shifted_up = FALSE;
+ }
+#endif
+#endif
+}
+
+boolean CheckCloseWindowEvent(ClientMessageEvent *event)
+{
+ if (event->type != EVENT_CLIENTMESSAGE)
+ return FALSE;
+
+ return TRUE; /* the only possible message here is SDL_QUIT */
+}
+
+
+/* ========================================================================= */
+/* joystick functions */
+/* ========================================================================= */
+
+void InitJoysticks()
+{
+ int i;
+
+#if defined(NO_JOYSTICK)
+ return; /* joysticks generally deactivated by compile-time directive */
+#endif
+
+ /* always start with reliable default values */
+ joystick.status = JOYSTICK_NOT_AVAILABLE;
+ for (i = 0; i < MAX_PLAYERS; i++)
+ joystick.nr[i] = -1; /* no joystick configured */
+
+ SDLInitJoysticks();
+}
+
+boolean ReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
+{
+ return SDLReadJoystick(nr, x, y, b1, b2);
+}
+
+boolean CheckJoystickOpened(int nr)
+{
+ return SDLCheckJoystickOpened(nr);
+}
+
+void ClearJoystickState()
+{
+ SDLClearJoystickState();
+}