+ FadeSoundsAndMusic();
+
+ ClearWindow();
+ DrawHeadline();
+
+ if (list->is_sound)
+ {
+ int sound = list->music;
+
+ if (sound_info[sound].loop)
+ PlaySoundLoop(sound);
+ else
+ PlaySound(sound);
+
+ DrawTextSCentered(100, FONT_TEXT_1, "The Game Background Sounds:");
+ }
+ else
+ {
+ PlayMusic(list->music);
+
+ DrawTextSCentered(100, FONT_TEXT_1, "The Game Background Music:");
+ }
+
+ if (!strEqual(list->title, UNKNOWN_NAME))
+ {
+ if (!strEqual(list->title_header, UNKNOWN_NAME))
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, list->title_header);
+
+ DrawTextFCentered(ystart + y++ * dy, FONT_TEXT_3, "\"%s\"", list->title);
+ }
+
+ if (!strEqual(list->artist, UNKNOWN_NAME))
+ {
+ if (!strEqual(list->artist_header, UNKNOWN_NAME))
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, list->artist_header);
+ else
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, "by");
+
+ DrawTextFCentered(ystart + y++ * dy, FONT_TEXT_3, "%s", list->artist);
+ }
+
+ if (!strEqual(list->album, UNKNOWN_NAME))
+ {
+ if (!strEqual(list->album_header, UNKNOWN_NAME))
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, list->album_header);
+ else
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, "from the album");
+
+ DrawTextFCentered(ystart + y++ * dy, FONT_TEXT_3, "\"%s\"", list->album);
+ }
+
+ if (!strEqual(list->year, UNKNOWN_NAME))
+ {
+ if (!strEqual(list->year_header, UNKNOWN_NAME))
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, list->year_header);
+ else
+ DrawTextSCentered(ystart + y++ * dy, FONT_TEXT_2, "from the year");
+
+ DrawTextFCentered(ystart + y++ * dy, FONT_TEXT_3, "%s", list->year);
+ }
+
+ DrawTextSCentered(ybottom, FONT_TEXT_4,
+ "Press any key or button for next page");
+ }
+
+ if (list != NULL && list->is_sound && sound_info[list->music].loop)
+ PlaySoundLoop(list->music);
+}
+
+static boolean DrawInfoScreen_CreditsScreen(int screen_nr)
+{
+ int ystart = 150, ystep = 30;
+ int ybottom = SYSIZE - 20;
+
+ ClearWindow();
+ DrawHeadline();
+
+ DrawTextSCentered(100, FONT_TEXT_1, "Credits:");
+
+ if (screen_nr == 0)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Special thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Peter Liepa");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for creating");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "\"Boulder Dash\"");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "in the year");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_3,
+ "1984");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_2,
+ "published by");
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_3,
+ "First Star Software");
+ }
+ else if (screen_nr == 1)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Special thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Klaus Heinz & Volker Wertich");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for creating");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "\"Emerald Mine\"");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "in the year");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_3,
+ "1987");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_2,
+ "published by");
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_3,
+ "Kingsoft");
+ }
+ else if (screen_nr == 2)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Special thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Michael Stopp & Philip Jespersen");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for creating");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "\"Supaplex\"");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "in the year");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_3,
+ "1991");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_2,
+ "published by");
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_3,
+ "Digital Integration");
+ }
+ else if (screen_nr == 3)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Special thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Hiroyuki Imabayashi");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for creating");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "\"Sokoban\"");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "in the year");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_3,
+ "1982");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_2,
+ "published by");
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_3,
+ "Thinking Rabbit");
+ }
+ else if (screen_nr == 4)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Special thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Alan Bond");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "and");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "Jürgen Bonhagen");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "for the continuous creation");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_2,
+ "of outstanding level sets");
+ }
+ else if (screen_nr == 5)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Peter Elzner");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for ideas and inspiration by");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "Diamond Caves");
+
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_2,
+ "Thanks to");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_3,
+ "Steffest");
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_2,
+ "for ideas and inspiration by");
+ DrawTextSCentered(ystart + 8 * ystep, FONT_TEXT_3,
+ "DX-Boulderdash");
+ }
+ else if (screen_nr == 6)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "David Tritscher");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for the new Emerald Mine engine");
+ }
+ else if (screen_nr == 7)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "Thanks to");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_3,
+ "Guido Schulz");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_2,
+ "for the initial DOS port");
+
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_2,
+ "Thanks to");
+ DrawTextSCentered(ystart + 5 * ystep, FONT_TEXT_3,
+ "Karl Hörnell");
+ DrawTextSCentered(ystart + 6 * ystep, FONT_TEXT_2,
+ "for some additional toons");
+ }
+ else if (screen_nr == 8)
+ {
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "And not to forget:");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_2,
+ "Many thanks to");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_3,
+ "All those who contributed");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_3,
+ "levels to this game");
+ DrawTextSCentered(ystart + 4 * ystep, FONT_TEXT_3,
+ "since 1995");
+ }
+ else
+ {
+ return FALSE;
+ }
+
+ DrawTextSCentered(ybottom, FONT_TEXT_4,
+ "Press any key or button for next page");
+
+ return TRUE;
+}
+
+void DrawInfoScreen_Credits()
+{
+ SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_CREDITS);
+
+ FadeSoundsAndMusic();
+
+ HandleInfoScreen_Credits(MB_MENU_INITIALIZE);
+}
+
+void HandleInfoScreen_Credits(int button)
+{
+ static int screen_nr = 0;
+
+ if (button == MB_MENU_INITIALIZE)
+ {
+ screen_nr = 0;
+
+ DrawInfoScreen_CreditsScreen(screen_nr);
+ }
+ else if (button == MB_MENU_LEAVE)
+ {
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+
+ return;
+ }
+ else if (button == MB_MENU_CHOICE)
+ {
+ screen_nr++;
+
+ if (!DrawInfoScreen_CreditsScreen(screen_nr))
+ {
+ FadeSoundsAndMusic();
+
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+ }
+ }
+ else
+ {
+ PlayMenuSoundIfLoop();
+ }
+}
+
+void DrawInfoScreen_Program()
+{
+ int ystart = 150, ystep = 30;
+ int ybottom = SYSIZE - 20;
+
+ SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_PROGRAM);
+
+ ClearWindow();
+ DrawHeadline();
+
+ DrawTextSCentered(100, FONT_TEXT_1, "Program Information:");
+
+ DrawTextSCentered(ystart + 0 * ystep, FONT_TEXT_2,
+ "This game is Freeware!");
+ DrawTextSCentered(ystart + 1 * ystep, FONT_TEXT_2,
+ "If you like it, send e-mail to:");
+ DrawTextSCentered(ystart + 2 * ystep, FONT_TEXT_3,
+ "info@artsoft.org");
+ DrawTextSCentered(ystart + 3 * ystep, FONT_TEXT_2,
+ "or SnailMail to:");
+ DrawTextSCentered(ystart + 4 * ystep + 0, FONT_TEXT_3,
+ "Holger Schemel");
+ DrawTextSCentered(ystart + 4 * ystep + 20, FONT_TEXT_3,
+ "Detmolder Strasse 189");
+ DrawTextSCentered(ystart + 4 * ystep + 40, FONT_TEXT_3,
+ "33604 Bielefeld");
+ DrawTextSCentered(ystart + 4 * ystep + 60, FONT_TEXT_3,
+ "Germany");
+
+ DrawTextSCentered(ystart + 7 * ystep, FONT_TEXT_2,
+ "If you have created new levels,");
+ DrawTextSCentered(ystart + 8 * ystep, FONT_TEXT_2,
+ "send them to me to include them!");
+ DrawTextSCentered(ystart + 9 * ystep, FONT_TEXT_2,
+ ":-)");
+
+ DrawTextSCentered(ybottom, FONT_TEXT_4,
+ "Press any key or button for info menu");
+}
+
+void HandleInfoScreen_Program(int button)
+{
+ int button_released = !button;
+
+ if (button == MB_MENU_LEAVE)
+ {
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+
+ return;
+ }
+
+ if (button_released)
+ {
+ FadeSoundsAndMusic();
+
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+ }
+ else
+ {
+ PlayMenuSoundIfLoop();
+ }
+}
+
+void DrawInfoScreen_LevelSet()
+{
+ int ystart = 150;
+ int ybottom = SYSIZE - 20;
+ char *filename = getLevelSetInfoFilename();
+ int font_nr = FONT_LEVEL_NUMBER;
+ int font_width = getFontWidth(font_nr);
+ int font_height = getFontHeight(font_nr);
+ int pad_x = 32;
+ int pad_y = ystart;
+ int sx = SX + pad_x;
+ int sy = SY + pad_y;
+ int max_chars_per_line = (SXSIZE - 2 * pad_x) / font_width;
+ int max_lines_per_screen = (SYSIZE - pad_y) / font_height - 1;
+
+ SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_LEVELSET);
+
+ ClearWindow();
+ DrawHeadline();
+
+ DrawTextSCentered(100, FONT_TEXT_1, "Level Set Information:");
+
+ DrawTextSCentered(ybottom, FONT_TEXT_4,
+ "Press any key or button for info menu");
+
+ if (filename != NULL)
+ DrawTextFromFile(sx, sy, filename, font_nr, max_chars_per_line,
+ max_lines_per_screen);
+ else
+ DrawTextSCentered(ystart, FONT_TEXT_2,
+ "No information for this level set.");
+}
+
+void HandleInfoScreen_LevelSet(int button)
+{
+ int button_released = !button;
+
+ if (button == MB_MENU_LEAVE)
+ {
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+
+ return;
+ }
+
+ if (button_released)
+ {
+ FadeSoundsAndMusic();
+
+ info_mode = INFO_MODE_MAIN;
+ DrawInfoScreen();
+ }
+ else
+ {
+ PlayMenuSoundIfLoop();
+ }
+}
+
+static void DrawInfoScreenExt(int fade_delay)
+{
+ SetMainBackgroundImage(IMG_BACKGROUND_INFO);
+
+ if (info_mode == INFO_MODE_TITLESCREEN)
+ DrawInfoScreen_TitleScreen();
+ else if (info_mode == INFO_MODE_ELEMENTS)
+ DrawInfoScreen_Elements();
+ else if (info_mode == INFO_MODE_MUSIC)
+ DrawInfoScreen_Music();
+ else if (info_mode == INFO_MODE_CREDITS)
+ DrawInfoScreen_Credits();
+ else if (info_mode == INFO_MODE_PROGRAM)
+ DrawInfoScreen_Program();
+ else if (info_mode == INFO_MODE_LEVELSET)
+ DrawInfoScreen_LevelSet();
+ else
+ DrawInfoScreen_Main(fade_delay);
+
+ if (info_mode != INFO_MODE_MUSIC)
+ {
+ PlayMenuSound();
+ PlayMenuMusic();
+ }
+}
+
+void DrawInfoScreen()
+{
+ DrawInfoScreenExt(0);
+}
+
+void HandleInfoScreen(int mx, int my, int dx, int dy, int button)
+{
+ if (info_mode == INFO_MODE_TITLESCREEN)
+ HandleInfoScreen_TitleScreen(button);
+ else if (info_mode == INFO_MODE_ELEMENTS)
+ HandleInfoScreen_Elements(button);
+ else if (info_mode == INFO_MODE_MUSIC)
+ HandleInfoScreen_Music(button);
+ else if (info_mode == INFO_MODE_CREDITS)
+ HandleInfoScreen_Credits(button);
+ else if (info_mode == INFO_MODE_PROGRAM)
+ HandleInfoScreen_Program(button);
+ else if (info_mode == INFO_MODE_LEVELSET)
+ HandleInfoScreen_LevelSet(button);
+ else
+ HandleInfoScreen_Main(mx, my, dx, dy, button);
+
+ DoAnimation();
+}
+
+
+/* ========================================================================= */
+/* type name functions */
+/* ========================================================================= */
+
+void HandleTypeName(int newxpos, Key key)
+{
+ static int xpos = 0, ypos = 2;
+ int font_width = getFontWidth(FONT_INPUT_1_ACTIVE);
+ int name_width = getFontWidth(FONT_MENU_1) * strlen("Name:");
+ int startx = mSX + 32 + name_width;
+ int starty = mSY + ypos * 32;
+
+ if (newxpos)
+ {
+ xpos = newxpos;
+
+ DrawText(startx, starty, setup.player_name, FONT_INPUT_1_ACTIVE);
+ DrawText(startx + xpos * font_width, starty, "_", FONT_INPUT_1_ACTIVE);
+
+ return;
+ }
+
+ if (((key >= KSYM_A && key <= KSYM_Z) ||
+ (key >= KSYM_a && key <= KSYM_z)) &&
+ xpos < MAX_PLAYER_NAME_LEN)
+ {
+ char ascii;
+
+ if (key >= KSYM_A && key <= KSYM_Z)
+ ascii = 'A' + (char)(key - KSYM_A);
+ else
+ ascii = 'a' + (char)(key - KSYM_a);
+
+ setup.player_name[xpos] = ascii;
+ setup.player_name[xpos + 1] = 0;
+ xpos++;
+
+ DrawText(startx, starty, setup.player_name, FONT_INPUT_1_ACTIVE);
+ DrawText(startx + xpos * font_width, starty, "_", FONT_INPUT_1_ACTIVE);
+ }
+ else if ((key == KSYM_Delete || key == KSYM_BackSpace) && xpos > 0)
+ {
+ xpos--;
+ setup.player_name[xpos] = 0;
+
+ DrawText(startx + xpos * font_width, starty, "_ ", FONT_INPUT_1_ACTIVE);
+ }
+ else if (key == KSYM_Return && xpos > 0)
+ {
+ DrawText(startx, starty, setup.player_name, FONT_INPUT_1);
+ DrawText(startx + xpos * font_width, starty, " ", FONT_INPUT_1_ACTIVE);
+
+ SaveSetup();
+ game_status = GAME_MODE_MAIN;
+ }
+}
+
+
+/* ========================================================================= */
+/* tree menu functions */
+/* ========================================================================= */
+
+static void DrawChooseTree(TreeInfo **ti_ptr)
+{
+ UnmapAllGadgets();
+
+ FreeScreenGadgets();
+ CreateScreenGadgets();
+
+ CloseDoor(DOOR_CLOSE_2);
+
+ ClearWindow();
+
+ HandleChooseTree(0, 0, 0, 0, MB_MENU_INITIALIZE, ti_ptr);
+ MapChooseTreeGadgets(*ti_ptr);
+
+ FadeToFront();
+ InitAnimation();
+}
+
+static void AdjustChooseTreeScrollbar(int id, int first_entry, TreeInfo *ti)
+{
+ struct GadgetInfo *gi = screen_gadget[id];
+ int items_max, items_visible, item_position;
+
+ items_max = numTreeInfoInGroup(ti);
+ items_visible = NUM_MENU_ENTRIES_ON_SCREEN;
+ item_position = first_entry;
+
+ if (item_position > items_max - items_visible)
+ item_position = items_max - items_visible;
+
+ ModifyGadget(gi, GDI_SCROLLBAR_ITEMS_MAX, items_max,
+ GDI_SCROLLBAR_ITEMS_VISIBLE, items_visible,
+ GDI_SCROLLBAR_ITEM_POSITION, item_position, GDI_END);
+}
+
+static void drawChooseTreeList(int first_entry, int num_page_entries,
+ TreeInfo *ti)
+{
+ int i;
+ char *title_string = NULL;
+#if 0
+ int xoffset_sets = 16;
+#endif
+ int yoffset_sets = MENU_TITLE1_YPOS;
+#if 0
+ int xoffset_setup = 16;
+#endif
+ int yoffset_setup = 16;
+#if 1
+#if 0
+ int xoffset = (ti->type == TREE_TYPE_LEVEL_DIR ? xoffset_sets :
+ xoffset_setup);
+#endif
+ int yoffset = (ti->type == TREE_TYPE_LEVEL_DIR ? yoffset_sets :
+ yoffset_setup);
+#else
+ int xoffset = (ti->type == TREE_TYPE_LEVEL_DIR ? 0 : xoffset_setup);
+ int yoffset = (ti->type == TREE_TYPE_LEVEL_DIR ? 0 : yoffset_setup);
+#endif
+ int last_game_status = game_status; /* save current game status */
+
+ title_string =
+ (ti->type == TREE_TYPE_LEVEL_DIR ? "Level Sets" :
+ ti->type == TREE_TYPE_GRAPHICS_DIR ? "Custom Graphics" :
+ ti->type == TREE_TYPE_SOUNDS_DIR ? "Custom Sounds" :
+ ti->type == TREE_TYPE_MUSIC_DIR ? "Custom Music" : "");
+
+#if 1
+ DrawTextSCentered(mSY - SY + yoffset, FONT_TITLE_1, title_string);
+#else
+ DrawText(SX + xoffset, SY + yoffset, title_string, FONT_TITLE_1);
+#endif
+
+ /* force LEVELS font on artwork setup screen */
+ game_status = GAME_MODE_LEVELS;
+
+ /* clear tree list area, but not title or scrollbar */
+ DrawBackground(mSX, mSY + MENU_SCREEN_START_YPOS * 32,
+ SC_SCROLLBAR_XPOS + menu.scrollbar_xoffset,
+ MAX_MENU_ENTRIES_ON_SCREEN * 32);
+
+ for (i = 0; i < num_page_entries; i++)
+ {
+ TreeInfo *node, *node_first;
+ int entry_pos = first_entry + i;
+ int xpos = MENU_SCREEN_START_XPOS;
+ int ypos = MENU_SCREEN_START_YPOS + i;
+ int startx = mSX + xpos * 32;
+ int starty = mSY + ypos * 32;
+ int font_nr = FONT_TEXT_1;
+ int font_xoffset = getFontBitmapInfo(font_nr)->draw_xoffset;
+ int startx_text = startx + font_xoffset;
+ int startx_scrollbar = mSX + SC_SCROLLBAR_XPOS + menu.scrollbar_xoffset;
+ int text_size = startx_scrollbar - startx_text;
+ int max_buffer_len = text_size / getFontWidth(font_nr);
+ char buffer[max_buffer_len + 1];
+
+ node_first = getTreeInfoFirstGroupEntry(ti);
+ node = getTreeInfoFromPos(node_first, entry_pos);
+
+ strncpy(buffer, node->name, max_buffer_len);
+ buffer[max_buffer_len] = '\0';
+
+ DrawText(startx, starty, buffer, font_nr + node->color);
+
+ if (node->parent_link)
+ initCursor(i, IMG_MENU_BUTTON_LEAVE_MENU);
+ else if (node->level_group)
+ initCursor(i, IMG_MENU_BUTTON_ENTER_MENU);
+ else
+ initCursor(i, IMG_MENU_BUTTON);
+ }
+
+ game_status = last_game_status; /* restore current game status */
+
+ redraw_mask |= REDRAW_FIELD;
+}
+
+static void drawChooseTreeInfo(int entry_pos, TreeInfo *ti)
+{
+ TreeInfo *node, *node_first;
+ int x, last_redraw_mask = redraw_mask;
+#if 1
+ int ypos = MENU_TITLE2_YPOS;
+#else
+ int ypos = 40;
+#endif
+
+ if (ti->type != TREE_TYPE_LEVEL_DIR)
+ return;
+
+ node_first = getTreeInfoFirstGroupEntry(ti);
+ node = getTreeInfoFromPos(node_first, entry_pos);
+
+ DrawBackground(SX, SY + ypos, SXSIZE, getFontHeight(FONT_TITLE_2));
+
+ if (node->parent_link)
+ DrawTextFCentered(ypos, FONT_TITLE_2, "leave group \"%s\"",
+ node->class_desc);
+ else if (node->level_group)
+ DrawTextFCentered(ypos, FONT_TITLE_2, "enter group \"%s\"",
+ node->class_desc);
+ else if (ti->type == TREE_TYPE_LEVEL_DIR)
+ DrawTextFCentered(ypos, FONT_TITLE_2, "%3d levels (%s)",
+ node->levels, node->class_desc);
+
+ /* let BackToFront() redraw only what is needed */
+ redraw_mask = last_redraw_mask | REDRAW_TILES;
+ for (x = 0; x < SCR_FIELDX; x++)
+ MarkTileDirty(x, 1);
+}
+
+static void HandleChooseTree(int mx, int my, int dx, int dy, int button,
+ TreeInfo **ti_ptr)
+{
+ TreeInfo *ti = *ti_ptr;
+ int x = 0;
+ int y = ti->cl_cursor;
+ int step = (button == 1 ? 1 : button == 2 ? 5 : 10);
+ int num_entries = numTreeInfoInGroup(ti);
+ int num_page_entries;
+ int last_game_status = game_status; /* save current game status */
+ boolean position_set_by_scrollbar = (dx == 999);
+
+ /* force LEVELS draw offset on choose level and artwork setup screen */
+ game_status = GAME_MODE_LEVELS;
+
+ if (num_entries <= NUM_MENU_ENTRIES_ON_SCREEN)
+ num_page_entries = num_entries;
+ else
+ num_page_entries = NUM_MENU_ENTRIES_ON_SCREEN;
+
+ game_status = last_game_status; /* restore current game status */
+
+ if (button == MB_MENU_INITIALIZE)
+ {
+ int num_entries = numTreeInfoInGroup(ti);
+ int entry_pos = posTreeInfo(ti);
+
+ if (ti->cl_first == -1)
+ {
+ /* only on initialization */
+ ti->cl_first = MAX(0, entry_pos - num_page_entries + 1);
+ ti->cl_cursor = entry_pos - ti->cl_first;
+ }
+ else if (ti->cl_cursor >= num_page_entries ||
+ (num_entries > num_page_entries &&
+ num_entries - ti->cl_first < num_page_entries))
+ {
+ /* only after change of list size (by custom graphic configuration) */
+ ti->cl_first = MAX(0, entry_pos - num_page_entries + 1);
+ ti->cl_cursor = entry_pos - ti->cl_first;
+ }
+
+ if (position_set_by_scrollbar)
+ ti->cl_first = dy;
+ else
+ AdjustChooseTreeScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL,
+ ti->cl_first, ti);
+
+ drawChooseTreeList(ti->cl_first, num_page_entries, ti);
+ drawChooseTreeInfo(ti->cl_first + ti->cl_cursor, ti);
+ drawChooseTreeCursor(ti->cl_cursor, FC_RED);
+
+ return;
+ }
+ else if (button == MB_MENU_LEAVE)
+ {
+ if (ti->node_parent)
+ {
+ *ti_ptr = ti->node_parent;
+ DrawChooseTree(ti_ptr);
+ }
+ else if (game_status == GAME_MODE_SETUP)
+ {
+ execSetupArtwork();
+ }
+ else
+ {
+ game_status = GAME_MODE_MAIN;
+ DrawMainMenu();
+ }
+
+ return;
+ }
+
+ if (mx || my) /* mouse input */
+ {
+ int last_game_status = game_status; /* save current game status */
+
+ /* force LEVELS draw offset on artwork setup screen */
+ game_status = GAME_MODE_LEVELS;
+
+ x = (mx - mSX) / 32;
+ y = (my - mSY) / 32 - MENU_SCREEN_START_YPOS;
+
+ game_status = last_game_status; /* restore current game status */
+ }
+ else if (dx || dy) /* keyboard or scrollbar/scrollbutton input */
+ {
+ /* move cursor instead of scrolling when already at start/end of list */
+ if (dy == -1 * SCROLL_LINE && ti->cl_first == 0)
+ dy = -1;
+ else if (dy == +1 * SCROLL_LINE &&
+ ti->cl_first + num_page_entries == num_entries)
+ dy = 1;
+
+ /* handle scrolling screen one line or page */
+ if (ti->cl_cursor + dy < 0 ||
+ ti->cl_cursor + dy > num_page_entries - 1)
+ {
+ if (ABS(dy) == SCROLL_PAGE)
+ step = num_page_entries - 1;
+
+ if (dy < 0 && ti->cl_first > 0)
+ {
+ /* scroll page/line up */
+
+ ti->cl_first -= step;
+ if (ti->cl_first < 0)
+ ti->cl_first = 0;
+
+ drawChooseTreeList(ti->cl_first, num_page_entries, ti);
+ drawChooseTreeInfo(ti->cl_first + ti->cl_cursor, ti);
+ drawChooseTreeCursor(ti->cl_cursor, FC_RED);
+ AdjustChooseTreeScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL,
+ ti->cl_first, ti);
+ }
+ else if (dy > 0 && ti->cl_first + num_page_entries < num_entries)
+ {
+ /* scroll page/line down */
+
+ ti->cl_first += step;
+ if (ti->cl_first + num_page_entries > num_entries)
+ ti->cl_first = MAX(0, num_entries - num_page_entries);
+
+ drawChooseTreeList(ti->cl_first, num_page_entries, ti);
+ drawChooseTreeInfo(ti->cl_first + ti->cl_cursor, ti);
+ drawChooseTreeCursor(ti->cl_cursor, FC_RED);
+ AdjustChooseTreeScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL,
+ ti->cl_first, ti);
+ }
+
+ return;
+ }
+
+ /* handle moving cursor one line */
+ y = ti->cl_cursor + dy;
+ }
+
+ if (dx == 1)
+ {
+ TreeInfo *node_first, *node_cursor;
+ int entry_pos = ti->cl_first + y;
+
+ node_first = getTreeInfoFirstGroupEntry(ti);
+ node_cursor = getTreeInfoFromPos(node_first, entry_pos);
+
+ if (node_cursor->node_group)