public override void Update()
        {
            base.Update();

            // Display nothing and exit if quest debugger not enabled
            if (!DaggerfallUnity.Settings.EnableQuestDebugger)
            {
                displayState = DisplayState.Nothing;
                return;
            }

            // Do not tick while HUD fading or load in progress
            // This is to prevent quest popups or other actions while player/world unavailable
            if (DaggerfallUI.Instance.FadeBehaviour.FadeInProgress || SaveLoadManager.Instance.LoadInProgress)
            {
                return;
            }

            if (QuestMachine.Instance.QuestCount == 0 && currentQuest != null)
            {
                ClearCurrentQuest();
                FullRefresh();
                return;
            }

            if (allQuests == null || allQuests.Length != QuestMachine.Instance.QuestCount)
            {
                FullRefresh();
            }

            // Clamp display state
            if (displayState < DisplayState.Nothing || displayState > DisplayState.QuestStateFull)
            {
                displayState = DisplayState.Nothing;
            }

            // Change quest selection
            HotkeySequence.KeyModifiers keyModifiers = HotkeySequence.GetKeyboardKeyModifiers();
            if (DaggerfallShortcut.GetBinding(DaggerfallShortcut.Buttons.DebuggerPrevQuest).IsDownWith(keyModifiers))
            {
                MovePreviousQuest();
            }
            else if (DaggerfallShortcut.GetBinding(DaggerfallShortcut.Buttons.DebuggerNextQuest).IsDownWith(keyModifiers))
            {
                MoveNextQuest();
            }

            // Change marker selection
            if (DaggerfallShortcut.GetBinding(DaggerfallShortcut.Buttons.DebuggerPrevMarker).IsDownWith(keyModifiers))
            {
                MovePreviousMarker();
            }
            else if (DaggerfallShortcut.GetBinding(DaggerfallShortcut.Buttons.DebuggerNextMarker).IsDownWith(keyModifiers))
            {
                MoveNextMarker();
            }
        }
        void Setup()
        {
            // Cut out red up/down arrows
            Texture2D arrowTexture = ImageReader.GetTexture(redArrowsTextureName);

            arrowUpTexture   = ImageReader.GetSubTexture(arrowTexture, upArrowRect, arrowsFullSize);
            arrowDownTexture = ImageReader.GetSubTexture(arrowTexture, downArrowRect, arrowsFullSize);

            // Drop down button
            dropDownToggleButton = DaggerfallUI.AddButton(new Rect(0, 0, 7, 7), this);
            dropDownToggleButton.BackgroundColor   = new Color(0.2f, 0.2f, 0.2f, 0.5f);//0.5f);
            dropDownToggleButton.OnMouseClick     += DropdownButton_OnMouseClick;
            dropDownToggleButton.Hotkey            = DaggerfallShortcut.GetBinding(DaggerfallShortcut.Buttons.OptionsDropdown);
            dropDownToggleButton.BackgroundTexture = arrowUpTexture;

            // Dropdown options panel
            dropdownPanel                 = new Panel();
            dropdownPanel.Position        = new Vector2(0, dropDownToggleButton.Position.y + dropDownToggleButton.Size.y);
            dropdownPanel.Size            = new Vector2(50, 30);
            dropdownPanel.BackgroundColor = Color.black;
            dropdownPanel.Enabled         = false;
            dropdownPanel.Outline.Enabled = true;
            this.Components.Add(dropdownPanel);

            dropdownList                = new ListBox();
            dropdownList.Position       = new Vector2(2, 2);
            dropdownList.ShadowPosition = Vector2.zero;
            dropdownList.RowsDisplayed  = unitsDisplayed;
            SetBackground(dropdownList, Color.black, "pauseDropdownListBackgroundColor");
            dropdownList.OnSelectItem     += DropdownList_OnUseSelectedItem;
            dropdownList.SelectedTextColor = dropdownList.TextColor;
            dropdownList.OnScroll         += DropdownList_OnScroll;
            dropdownPanel.Components.Add(dropdownList);

            AddOptions();
            var height = dropdownList.HeightContent();

            dropdownList.Size  = new Vector2(maxTextWidth, height > 80 ? 80 : height);
            dropdownPanel.Size = new Vector2(dropdownList.Size.x + 6, dropdownList.Size.y + 3);

            dropdownScroller              = new VerticalScrollBar();
            dropdownScroller.Position     = new Vector2(maxTextWidth, 2);
            dropdownScroller.Size         = new Vector2(5, dropdownPanel.Size.y - 3);
            dropdownScroller.DisplayUnits = unitsDisplayed;
            dropdownScroller.TotalUnits   = dropdownList.Count;
            dropdownScroller.OnScroll    += SavesScroller_OnScroll;
            dropdownPanel.Components.Add(dropdownScroller);
        }