ichni_Official/Assets/Scripts/UI/Settings/SettingsUIPage.cs

using Ichni.UI;
using UnityEngine.UI;

namespace Ichni.Menu
{
    public class SettingsUIPage : UIPageBase
    {
        SettingsSaveData gameSettings => SettingsManager.instance.settingsSaveData;
        
        public Button backButton;
        public SettingsWindowController settingsWindowController;
        public OffsetEditor offsetEditor;

        // 设置页不再假定只能从章节选择页进入。该引用只保存本次打开设置时的来源，
        // 不需要写入存档；关闭设置页后即清空。
        private UIPageBase _returnPage;
        
        protected override void Awake()
        {
            base.Awake();
            
            backButton.onClick.AddListener(() =>
            {
                FadeOut();
                SettingsManager.instance.SaveGameSettings();
                (_returnPage ?? MenuManager.instance.chapterSelectionUIPage)?.FadeIn();
                _returnPage = null;
            });
        }

        /// <summary>
        /// 由独立的 <see cref="SettingsButton"/> 调用，记录打开设置页的来源并切换页面。
        /// 这样章节选择页、剧情页及未来其它页面都可复用同一个设置按钮逻辑。
        /// </summary>
        public void OpenFrom(UIPageBase sourcePage)
        {
            _returnPage = sourcePage;
            sourcePage?.FadeOut();
            FadeIn();
        }
    }
}