using System;
using System.Collections;
using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.Utility;
using DG.Tweening;
using UnityEngine;
using UnityEngine.ResourceManagement.AsyncOperations;

namespace AibisDream
{
    public class SpriteShowcase : Singleton<SpriteShowcase>
    {
        /// <summary>Addressable Key 模板，与 Scene_Dream 中梦境图 Address 一致。</summary>
        private const string DreamSpritePath = "Sprite/梦境/{0}.png";
        private const string KiteBaseSuffix = "_底图";
        private const string KiteMotionSuffix = "_风筝层";

        [SerializeField] private SpriteRenderer _spriteRenderer;
        [SerializeField] private SpriteRenderer _backgroundSpriteRenderer;
        [SerializeField] private SpriteRenderer _largeSpriteRenderer;

        private SpriteRenderer _smallMotionRenderer;
        private SpriteMask _smallMotionMask;
        private DG.Tweening.Sequence _smallMotionSequence;
        private Vector3 _smallBaseLocalPosition;
        private Quaternion _smallBaseLocalRotation;
        private Vector3 _smallBaseLocalScale;
        private Vector3 _smallMotionBaseOffset;
        private string _currentSmallPicName;

        // 通过 activeSelf 判断当前状态
        private bool IsSmallShowing => _spriteRenderer.gameObject.activeSelf;
        private bool IsLargeShowing => _largeSpriteRenderer != null && _largeSpriteRenderer.gameObject.activeSelf;

        public override void OnSingletonInit()
        {
            CaptureSmallBaseTransform();

            // 初始状态：隐藏
            _spriteRenderer.gameObject.SetActive(false);
            _spriteRenderer.SetAlpha(0);

            // 大图初始状态：隐藏
            if (_largeSpriteRenderer != null)
            {
                _largeSpriteRenderer.gameObject.SetActive(false);
                _largeSpriteRenderer.SetAlpha(0);
            }
        }

        private void CaptureSmallBaseTransform()
        {
            if (_spriteRenderer == null) return;

            var tr = _spriteRenderer.transform;
            _smallBaseLocalPosition = tr.localPosition;
            _smallBaseLocalRotation = tr.localRotation;
            _smallBaseLocalScale = tr.localScale;
        }

        private static string NormalizeDreamPicName(string picName)
        {
            if (string.IsNullOrEmpty(picName)) return picName;
            return picName.EndsWith(".png", StringComparison.OrdinalIgnoreCase)
                ? picName.Substring(0, picName.Length - 4)
                : picName;
        }

        private IEnumerator LoadDreamSpriteInto(SpriteRenderer target, string picName)
        {
            var key = string.Format(DreamSpritePath, NormalizeDreamPicName(picName));
            var handle = ResourceSystem.LoadAsync<Sprite>(key);
            yield return handle;
            if (handle.Status == AsyncOperationStatus.Succeeded && handle.Result != null)
                target.sprite = handle.Result;
            else
                Debug.LogError($"[SpriteShowcase] Failed to load sprite: {key}");
        }

        private void EnsureSmallMotionRenderer()
        {
            if (_smallMotionRenderer != null || _spriteRenderer == null) return;

            var motionObject = new GameObject($"{_spriteRenderer.name} Motion");
            motionObject.transform.SetParent(_spriteRenderer.transform.parent);
            _smallMotionRenderer = motionObject.AddComponent<SpriteRenderer>();
            CopySmallRendererSettings(_smallMotionRenderer, 1, SpriteMaskInteraction.VisibleInsideMask);
            _smallMotionRenderer.gameObject.SetActive(false);
            _smallMotionRenderer.SetAlpha(0);
        }

        private void CopySmallRendererSettings(SpriteRenderer target, int sortingOrderOffset, SpriteMaskInteraction maskInteraction)
        {
            if (target == null || _spriteRenderer == null) return;

            target.sharedMaterial = _spriteRenderer.sharedMaterial;
            target.sortingLayerID = _spriteRenderer.sortingLayerID;
            target.sortingOrder = _spriteRenderer.sortingOrder + sortingOrderOffset;
            target.drawMode = _spriteRenderer.drawMode;
            target.size = _spriteRenderer.size;
            target.flipX = _spriteRenderer.flipX;
            target.flipY = _spriteRenderer.flipY;
            target.maskInteraction = maskInteraction;
        }

        private void EnsureSmallMotionMask()
        {
            if (_smallMotionMask != null || _spriteRenderer == null) return;

            var maskObject = new GameObject($"{_spriteRenderer.name} Motion Mask");
            maskObject.transform.SetParent(_spriteRenderer.transform.parent);
            _smallMotionMask = maskObject.AddComponent<SpriteMask>();
            _smallMotionMask.alphaCutoff = 0.01f;
            _smallMotionMask.isCustomRangeActive = true;
            _smallMotionMask.enabled = false;
        }

        private void ConfigureSmallMotionMask()
        {
            EnsureSmallMotionMask();
            if (_smallMotionMask == null) return;

            _smallMotionMask.sprite = _spriteRenderer.sprite;
            _smallMotionMask.frontSortingLayerID = _spriteRenderer.sortingLayerID;
            _smallMotionMask.backSortingLayerID = _spriteRenderer.sortingLayerID;
            _smallMotionMask.frontSortingOrder = _spriteRenderer.sortingOrder + 2;
            _smallMotionMask.backSortingOrder = _spriteRenderer.sortingOrder;

            var maskTr = _smallMotionMask.transform;
            maskTr.localPosition = _smallBaseLocalPosition;
            maskTr.localRotation = _smallBaseLocalRotation;
            maskTr.localScale = _smallBaseLocalScale;
            _smallMotionMask.enabled = true;
        }

        private void KillSmallTweenState()
        {
            _smallMotionSequence?.Kill();
            _smallMotionSequence = null;
        }

        private void ResetSmallTransform(bool resetMotionLayer = true)
        {
            if (_spriteRenderer == null) return;

            var tr = _spriteRenderer.transform;
            tr.localPosition = _smallBaseLocalPosition;
            tr.localRotation = _smallBaseLocalRotation;
            tr.localScale = _smallBaseLocalScale;

            if (!resetMotionLayer || _smallMotionRenderer == null) return;

            var motionTr = _smallMotionRenderer.transform;
            motionTr.localPosition = _smallBaseLocalPosition + _smallMotionBaseOffset;
            motionTr.localRotation = _smallBaseLocalRotation;
            motionTr.localScale = _smallBaseLocalScale;
        }

        private static string NormalizeMotionProfile(string motionProfile)
        {
            return string.IsNullOrEmpty(motionProfile)
                ? string.Empty
                : motionProfile.Trim().ToLowerInvariant();
        }

        private Vector3 BaseOffset(float x, float y)
        {
            return _smallBaseLocalPosition + _smallMotionBaseOffset + new Vector3(x, y, 0f);
        }

        private static bool TryGetSplitMotionPicNames(string picName, out string basePicName, out string motionPicName)
        {
            var normalized = NormalizeDreamPicName(picName);

            // 风筝图已改由风筝 Rig（ShowKite 等）连续驱动，分层底图+遮罩通路仅保留给轱辘特写
            if (normalized == "D2S轱辘")
            {
                basePicName = $"{normalized}{KiteBaseSuffix}";
                motionPicName = $"{normalized}{KiteMotionSuffix}";
                return true;
            }

            basePicName = picName;
            motionPicName = null;
            return false;
        }

        private void PlaySmallMotion(string motionProfile)
        {
            _smallMotionSequence?.Kill();
            _smallMotionSequence = null;

            var profile = NormalizeMotionProfile(motionProfile);
            if (string.IsNullOrEmpty(profile) || profile == "none") return;

            var target = _smallMotionRenderer != null && _smallMotionRenderer.gameObject.activeSelf
                ? _smallMotionRenderer
                : _spriteRenderer;
            var tr = target.transform;
            var seq = DOTween.Sequence();

            switch (profile)
            {
                // 轱辘：持续拉扯里的几次失控顿挫。单向循环，避免 Yoyo 反放造成“被倒带”的怪感。
                case "reel_tension":
                    seq.Append(tr.DOLocalMove(BaseOffset(0.03f, -0.05f), 0.28f).SetEase(Ease.InOutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -1.5f), 0.28f).SetEase(Ease.InOutSine));
                    seq.Append(tr.DOLocalMove(BaseOffset(0.13f, -0.18f), 0.16f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -4.8f), 0.16f).SetEase(Ease.OutCubic));
                    seq.Append(tr.DOLocalMove(BaseOffset(0.08f, -0.11f), 0.48f).SetEase(Ease.InOutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -2.4f), 0.48f).SetEase(Ease.InOutSine));
                    seq.AppendInterval(0.12f);
                    seq.Append(tr.DOLocalMove(BaseOffset(0.19f, -0.25f), 0.13f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -6.5f), 0.13f).SetEase(Ease.OutCubic));
                    seq.Append(tr.DOLocalMove(BaseOffset(0.11f, -0.15f), 0.62f).SetEase(Ease.InOutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -3.2f), 0.62f).SetEase(Ease.InOutSine));
                    seq.AppendInterval(0.2f);
                    seq.Append(tr.DOLocalMove(BaseOffset(0.15f, -0.21f), 0.18f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -5.2f), 0.18f).SetEase(Ease.OutCubic));
                    seq.Append(tr.DOLocalMove(BaseOffset(0.06f, -0.09f), 0.75f).SetEase(Ease.InOutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -2f), 0.75f).SetEase(Ease.InOutSine));
                    seq.AppendInterval(0.18f);
                    seq.SetLoops(-1, LoopType.Restart);
                    break;

                default:
                    seq.Kill();
                    return;
            }

            _smallMotionSequence = seq;
        }

        public void PlayCurrentMotion(string motionProfile)
        {
            if (_spriteRenderer == null || !IsSmallShowing) return;
            PlaySmallMotion(motionProfile);
        }

        /// <summary>
        /// 显示物体（小图）
        /// </summary>
        /// <param name="picName">图片名（无扩展名，与 Yarn 中一致；Addressable Key 由 <see cref="DreamSpritePath"/> 拼接）</param>
        /// <param name="duration">淡入时长</param>
        /// <returns>协程</returns>
        public IEnumerator ShowObj(string picName, float duration = 1)
        {
            // 互斥：如果大图正在显示，先隐藏
            if (IsLargeShowing)
            {
                yield return HideLargeObj(duration);
            }

            // 互斥：风筝 Rig 正在显示时先隐藏
            if (IsKiteShowing)
            {
                yield return HideKite(Mathf.Min(duration, 0.25f));
            }

            KillSmallTweenState();
            ResetSmallTransform();

            if (_smallMotionRenderer != null)
            {
                _smallMotionRenderer.gameObject.SetActive(false);
                _smallMotionRenderer.SetAlpha(0);
                _smallMotionRenderer.maskInteraction = SpriteMaskInteraction.None;
            }

            if (_smallMotionMask != null)
            {
                _smallMotionMask.enabled = false;
            }

            _spriteRenderer.gameObject.SetActive(true);

            yield return LoadDreamSpriteInto(_spriteRenderer, picName);
            _currentSmallPicName = NormalizeDreamPicName(picName);

            yield return _spriteRenderer.DOFade(1, duration).WaitForCompletion();
        }

        public IEnumerator ShowObjWithMotion(string picName, string motionProfile, float duration)
        {
            // 互斥：如果大图正在显示，先隐藏
            if (IsLargeShowing)
            {
                yield return HideLargeObj(duration);
            }

            // 互斥：风筝 Rig 正在显示时先隐藏
            if (IsKiteShowing)
            {
                yield return HideKite(Mathf.Min(duration, 0.25f));
            }

            var normalizedName = NormalizeDreamPicName(picName);
            var useSplitMotion = TryGetSplitMotionPicNames(picName, out var basePicName, out var motionPicName);
            var isSamePic = string.Equals(_currentSmallPicName, normalizedName, StringComparison.OrdinalIgnoreCase);
            _smallMotionBaseOffset = normalizedName == "D2S轱辘" ? new Vector3(0f, -0.32f, 0f) : Vector3.zero;

            KillSmallTweenState();

            ResetSmallTransform(resetMotionLayer: !isSamePic);
            _spriteRenderer.gameObject.SetActive(true);

            if (!isSamePic || _spriteRenderer.sprite == null)
            {
                yield return LoadDreamSpriteInto(_spriteRenderer, useSplitMotion ? basePicName : picName);
                _currentSmallPicName = normalizedName;
            }
            _spriteRenderer.SetAlpha(1f);

            if (useSplitMotion)
            {
                EnsureSmallMotionRenderer();
                _smallMotionRenderer.gameObject.SetActive(true);
                CopySmallRendererSettings(_smallMotionRenderer, 1, SpriteMaskInteraction.VisibleInsideMask);
                ConfigureSmallMotionMask();
                ResetSmallTransform(resetMotionLayer: !isSamePic);
                if (!isSamePic || _smallMotionRenderer.sprite == null)
                {
                    yield return LoadDreamSpriteInto(_smallMotionRenderer, motionPicName);
                }
                _smallMotionRenderer.SetAlpha(1f);
            }
            else if (_smallMotionRenderer != null)
            {
                _smallMotionRenderer.gameObject.SetActive(false);
                _smallMotionRenderer.SetAlpha(0);
                _smallMotionRenderer.maskInteraction = SpriteMaskInteraction.None;

                if (_smallMotionMask != null)
                {
                    _smallMotionMask.enabled = false;
                }
            }

            PlaySmallMotion(motionProfile);
        }

        /// <summary>
        /// 显示大图
        /// </summary>
        /// <param name="picName">图片名（无扩展名，与 Yarn 中一致；Addressable Key 由 <see cref="DreamSpritePath"/> 拼接）</param>
        /// <param name="duration">淡入时长</param>
        /// <returns>协程</returns>
        public IEnumerator ShowLargeObj(string picName, float duration = 1)
        {
            // 互斥：小图立刻关掉，避免风筝层与底图不同步淡出造成的怪 fade
            if (IsSmallShowing)
            {
                yield return HideObj(0f);
            }

            if (IsKiteShowing)
            {
                yield return HideKite(0f);
            }

            if (_largeSpriteRenderer == null) yield break;

            _largeSpriteRenderer.gameObject.SetActive(true);

            yield return LoadDreamSpriteInto(_largeSpriteRenderer, picName);

            yield return _largeSpriteRenderer.DOFade(1, duration).WaitForCompletion();
        }

        /// <summary>
        /// 隐藏物体（小图）
        /// </summary>
        /// <param name="duration">淡出时长</param>
        /// <returns>协程</returns>
        public IEnumerator HideObj(float duration = 1)
        {
            yield return HideObj(force: false, duration);
        }

        /// <summary>
        /// 隐藏物体（小图）
        /// </summary>
        /// <param name="force">是否强制隐藏</param>
        /// <param name="duration">淡出时长</param>
        /// <returns>协程</returns>
        public IEnumerator HideObj(bool force, float duration = 1)
        {
            // 风筝 Rig 视作小图的一种，hide_sprite 时一并隐藏
            if (IsKiteShowing)
            {
                yield return HideKite(duration);
            }

            // force=false 时检查状态，未显示则直接返回
            if (!force && !IsSmallShowing) yield break;

            KillSmallTweenState();
            ResetSmallTransform();

            var motionActive = _smallMotionRenderer != null && _smallMotionRenderer.gameObject.activeSelf;
            if (duration <= 0f)
            {
                _spriteRenderer.SetAlpha(0);
                if (motionActive)
                    _smallMotionRenderer.SetAlpha(0);
            }
            else
            {
                var fade = _spriteRenderer.DOFade(0, duration);
                if (motionActive)
                    _smallMotionRenderer.DOFade(0, duration);
                yield return fade.WaitForCompletion();
            }

            _spriteRenderer.gameObject.SetActive(false);
            _currentSmallPicName = null;

            if (_smallMotionRenderer != null)
            {
                _smallMotionRenderer.gameObject.SetActive(false);
                _smallMotionRenderer.SetAlpha(0);
                _smallMotionRenderer.maskInteraction = SpriteMaskInteraction.None;
            }

            if (_smallMotionMask != null)
            {
                _smallMotionMask.enabled = false;
            }
        }
        
        /// <summary>
        /// 隐藏大图
        /// </summary>
        /// <param name="force">是否强制隐藏</param>
        /// <param name="duration">淡出时长</param>
        /// <returns>协程</returns>
        public IEnumerator HideLargeObj(float duration = 1)
        {
            if (_largeSpriteRenderer == null) yield break;

            yield return _largeSpriteRenderer.DOFade(0, duration).WaitForCompletion();
            _largeSpriteRenderer.gameObject.SetActive(false);
        }

        /// <summary>
        /// 隐藏所有（小图和大图）
        /// </summary>
        /// <param name="duration">淡出时长</param>
        /// <returns>协程</returns>
        public IEnumerator HideAll(float duration = 1)
        {
            if (IsSmallShowing || IsKiteShowing)
                yield return HideObj(duration);

            if (IsLargeShowing)
                yield return HideLargeObj(duration);
        }

        #region 风筝 Rig

        // 风筝段落弃用切图（D2S风筝1/2/3），改为单张风筝图 + 三层 Transform 连续驱动：
        // Kite Rig（高度补间：缩放+位移）→ Sway（常驻风况循环）→ Accent（一次性顿挫 + Renderer）
        // 三层各持有独立 Tween，互不覆盖。白色底图挂在独立的静态 renderer 上，不随高度缩放。
        private const string KiteSpritePicName = "D2S风筝1_风筝层";
        private const string KiteBasePicName = "D2S风筝1_底图";
        private const float KiteMaxHeight = 13f;
        /// <summary>每升高 1 点高度，缩放乘以该系数。</summary>
        private const float KiteScalePerHeight = 0.84f;
        /// <summary>缩放下限：最远处的风筝也不小于该比例。</summary>
        private const float KiteMinScaleFactor = 0.12f;
        /// <summary>高度最大时风筝相对基准位置的漂移量（向上飘 + 少量横移）。</summary>
        private static readonly Vector3 KiteTopDrift = new Vector3(0.5f, 1.2f, 0f);

        private Transform _kiteRootPivot;
        private Transform _kiteSwayPivot;
        private SpriteRenderer _kiteRenderer;
        private SpriteRenderer _kiteBaseRenderer;
        private SpriteMask _kiteMask;
        private DG.Tweening.Sequence _kiteHeightSequence;
        private DG.Tweening.Sequence _kiteSwaySequence;
        private DG.Tweening.Sequence _kiteAccentSequence;
        private Tween _kiteFadeTween;
        private Tween _kiteBaseFadeTween;
        private float _kiteHeight;
        /// <summary>当前乱度 0~1，由 kite_wind 显式设定；kite_state 沿用上次的值（粘滞）。</summary>
        private float _kiteTurbulence;
        private bool _kiteSpriteLoaded;
        private bool _kiteBaseSpriteLoaded;

        private bool IsKiteShowing => _kiteRootPivot != null && _kiteRootPivot.gameObject.activeSelf;

        private void EnsureKiteRig()
        {
            if (_kiteRootPivot != null || _spriteRenderer == null) return;

            var root = new GameObject("Kite Rig");
            root.transform.SetParent(_spriteRenderer.transform.parent);
            root.transform.localPosition = _smallBaseLocalPosition;
            root.transform.localRotation = _smallBaseLocalRotation;
            root.transform.localScale = _smallBaseLocalScale;

            var sway = new GameObject("Kite Sway");
            sway.transform.SetParent(root.transform, false);

            var accent = new GameObject("Kite Accent");
            accent.transform.SetParent(sway.transform, false);

            // 白色底图：独立静态节点，不随高度层缩放
            var baseObject = new GameObject("Kite Base");
            baseObject.transform.SetParent(_spriteRenderer.transform.parent);
            baseObject.transform.localPosition = _smallBaseLocalPosition;
            baseObject.transform.localRotation = _smallBaseLocalRotation;
            baseObject.transform.localScale = _smallBaseLocalScale;

            // 遮罩：把风筝层限制在底图（天空）范围内，不会飘出画框
            var maskObject = new GameObject("Kite Mask");
            maskObject.transform.SetParent(_spriteRenderer.transform.parent);
            maskObject.transform.localPosition = _smallBaseLocalPosition;
            maskObject.transform.localRotation = _smallBaseLocalRotation;
            maskObject.transform.localScale = _smallBaseLocalScale;

            _kiteRootPivot = root.transform;
            _kiteSwayPivot = sway.transform;
            _kiteRenderer = accent.AddComponent<SpriteRenderer>();
            CopySmallRendererSettings(_kiteRenderer, 1, SpriteMaskInteraction.VisibleInsideMask);
            _kiteBaseRenderer = baseObject.AddComponent<SpriteRenderer>();
            CopySmallRendererSettings(_kiteBaseRenderer, 0, SpriteMaskInteraction.None);
            _kiteMask = maskObject.AddComponent<SpriteMask>();
            _kiteMask.alphaCutoff = 0.01f;
            _kiteMask.isCustomRangeActive = true;
            _kiteMask.enabled = false;

            root.SetActive(false);
            baseObject.SetActive(false);
            _kiteRenderer.SetAlpha(0);
            _kiteBaseRenderer.SetAlpha(0);
        }

        private static float KiteScaleFactor(float height) =>
            Mathf.Max(Mathf.Pow(KiteScalePerHeight, height), KiteMinScaleFactor);

        private Vector3 KitePosition(float height) =>
            _smallBaseLocalPosition + KiteTopDrift * (height / KiteMaxHeight);

        private Vector3 KiteScale(float height) => _smallBaseLocalScale * KiteScaleFactor(height);

        /// <summary>极高处降低不透明度，配合“几乎看不见”的文本。</summary>
        private static float KiteAlpha(float height) =>
            height <= 8f ? 1f : Mathf.Lerp(1f, 0.75f, (height - 8f) / (KiteMaxHeight - 8f));

        private void KillKiteTweens()
        {
            _kiteHeightSequence?.Kill();
            _kiteHeightSequence = null;
            _kiteSwaySequence?.Kill();
            _kiteSwaySequence = null;
            _kiteAccentSequence?.Kill();
            _kiteAccentSequence = null;
            _kiteFadeTween?.Kill();
            _kiteFadeTween = null;
            _kiteBaseFadeTween?.Kill();
            _kiteBaseFadeTween = null;
        }

        private void ApplyKiteStateImmediate(float height)
        {
            _kiteRootPivot.localPosition = KitePosition(height);
            _kiteRootPivot.localRotation = _smallBaseLocalRotation;
            _kiteRootPivot.localScale = KiteScale(height);
            _kiteSwayPivot.localPosition = Vector3.zero;
            _kiteSwayPivot.localRotation = Quaternion.identity;
            _kiteRenderer.transform.localPosition = Vector3.zero;
            _kiteRenderer.transform.localRotation = Quaternion.identity;
        }

        /// <summary>
        /// 显示风筝 Rig。已显示时等价于 <see cref="SetKiteState"/>（幂等）。
        /// </summary>
        /// <param name="height">风筝高度（对应 Yarn 变量 $h）</param>
        /// <param name="wind">风向（对应 Yarn 变量 $wind：1 强 / 0 无 / -1 弱）</param>
        /// <param name="duration">淡入时长</param>
        public IEnumerator ShowKite(float height, int wind, float duration = 0.35f)
        {
            if (IsLargeShowing)
            {
                yield return HideLargeObj(duration);
            }

            if (IsSmallShowing)
            {
                yield return HideObj(Mathf.Min(duration, 0.25f));
            }

            EnsureKiteRig();
            if (_kiteRenderer == null) yield break;

            height = Mathf.Clamp(height, 0f, KiteMaxHeight);

            if (IsKiteShowing)
            {
                SetKiteState(height, wind, duration);
                yield break;
            }

            KillKiteTweens();
            ApplyKiteStateImmediate(height);
            _kiteHeight = height;
            _kiteRootPivot.gameObject.SetActive(true);
            _kiteBaseRenderer.gameObject.SetActive(true);

            if (!_kiteSpriteLoaded)
            {
                yield return LoadDreamSpriteInto(_kiteRenderer, KiteSpritePicName);
                _kiteSpriteLoaded = _kiteRenderer.sprite != null;
            }

            if (!_kiteBaseSpriteLoaded)
            {
                yield return LoadDreamSpriteInto(_kiteBaseRenderer, KiteBasePicName);
                _kiteBaseSpriteLoaded = _kiteBaseRenderer.sprite != null;
            }

            if (_kiteBaseSpriteLoaded)
            {
                _kiteMask.sprite = _kiteBaseRenderer.sprite;
                _kiteMask.frontSortingLayerID = _kiteRenderer.sortingLayerID;
                _kiteMask.backSortingLayerID = _kiteRenderer.sortingLayerID;
                _kiteMask.frontSortingOrder = _spriteRenderer.sortingOrder + 2;
                _kiteMask.backSortingOrder = _spriteRenderer.sortingOrder;
                _kiteMask.enabled = true;
            }

            _kiteTurbulence = 0f;
            PlayKiteSway(wind);
            _kiteBaseFadeTween = _kiteBaseRenderer.DOFade(1f, duration);
            _kiteFadeTween = _kiteRenderer.DOFade(KiteAlpha(height), duration);
            yield return _kiteFadeTween.WaitForCompletion();
        }

        /// <summary>
        /// 高度补间（每次选择的主反馈）+ 切换风况循环。
        /// </summary>
        public void SetKiteState(float height, int wind, float duration = 0.9f)
        {
            if (!IsKiteShowing) return;

            height = Mathf.Clamp(height, 0f, KiteMaxHeight);
            _kiteHeight = height;

            _kiteHeightSequence?.Kill();
            var seq = DOTween.Sequence();
            seq.Append(_kiteRootPivot.DOLocalMove(KitePosition(height), duration).SetEase(Ease.InOutSine));
            seq.Join(_kiteRootPivot.DOScale(KiteScale(height), duration).SetEase(Ease.InOutSine));
            _kiteHeightSequence = seq;

            _kiteFadeTween?.Kill();
            _kiteFadeTween = _kiteRenderer.DOFade(KiteAlpha(height), duration);

            PlayKiteSway(wind);
        }

        /// <summary>仅切换风况循环（选择前 telegraph 风向）。</summary>
        /// <param name="wind">风向：1 强 / 0 无 / -1 弱</param>
        /// <param name="turbulence">乱度 0~1；负数或省略表示平稳。设定后粘滞，kite_state 沿用。</param>
        public void SetKiteWind(int wind, float turbulence = -1f)
        {
            if (!IsKiteShowing) return;
            _kiteTurbulence = turbulence >= 0f ? Mathf.Clamp01(turbulence) : 0f;
            PlayKiteSway(wind);
        }

        /// <summary>
        /// 常驻风况循环。位移在高度层的子空间里会随缩放变小，用 comp 做部分补偿保证远处仍有可读的移动。
        /// 平稳（乱度 0）：大而缓的漫游位移，自由自在地飘，绝不抖。
        /// 乱流（乱度 &gt;0）：一阵一阵——静一下，猛地被拽走一截（位移+旋转），慢慢荡回来，再来一阵。
        /// </summary>
        private void PlayKiteSway(int wind)
        {
            _kiteSwaySequence?.Kill();
            _kiteSwaySequence = null;

            var tr = _kiteSwayPivot;
            var storm = _kiteTurbulence;
            // 屏幕可读性补偿：高度层缩小时适度放大局部位移（开方衰减），避免远处几乎不动
            var comp = Mathf.Clamp(1f / Mathf.Sqrt(KiteScaleFactor(_kiteHeight)), 1f, 2.2f);
            var seq = DOTween.Sequence();
            var loopType = LoopType.Yoyo;

            if (wind > 0 && storm > 0.01f)
            {
                // 乱流：先被阵风突然带走，再慢慢回撑；间隔不等，让“失控”读出来但不变成抖屏。
                loopType = LoopType.Restart;
                var amp = comp * (0.95f + storm * 0.95f);
                seq.AppendInterval(Mathf.Lerp(0.35f, 0.12f, storm));
                seq.Append(tr.DOLocalMove(new Vector3(0.46f, 0.08f, 0f) * amp, 0.22f).SetEase(Ease.OutCubic));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -13f - storm * 8f), 0.22f).SetEase(Ease.OutCubic));
                seq.Append(tr.DOLocalMove(new Vector3(0.2f, -0.08f, 0f) * amp, 0.95f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 5f + storm * 2f), 0.95f).SetEase(Ease.InOutSine));
                seq.AppendInterval(0.08f);
                seq.Append(tr.DOLocalMove(new Vector3(-0.3f, 0.16f, 0f) * amp, 0.18f).SetEase(Ease.OutCubic));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 12f + storm * 7f), 0.18f).SetEase(Ease.OutCubic));
                seq.Append(tr.DOLocalMove(new Vector3(-0.04f, 0.02f, 0f) * amp, 0.72f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -2f), 0.72f).SetEase(Ease.InOutSine));
                seq.AppendInterval(Mathf.Lerp(0.28f, 0.08f, storm));
                seq.Append(tr.DOLocalMove(new Vector3(0.36f, 0.2f, 0f) * amp, 0.16f).SetEase(Ease.OutCubic));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -10f - storm * 5f), 0.16f).SetEase(Ease.OutCubic));
                seq.Append(tr.DOLocalMove(new Vector3(0.1f, 0.04f, 0f) * amp, 1.05f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 2f), 1.05f).SetEase(Ease.InOutSine));
            }
            else if (wind > 0)
            {
                // 稳定的风：顶着风侧倾，大幅度缓慢巡游（位移为主，平稳无抖）
                seq.Append(tr.DOLocalMove(new Vector3(0.3f, 0.18f, 0f) * comp, 2.6f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -7f), 2.6f).SetEase(Ease.InOutSine));
                seq.Append(tr.DOLocalMove(new Vector3(0.42f, 0.06f, 0f) * comp, 2.2f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -4f), 2.2f).SetEase(Ease.InOutSine));
                seq.Append(tr.DOLocalMove(new Vector3(0.12f, 0.12f, 0f) * comp, 2.8f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -8.5f), 2.8f).SetEase(Ease.InOutSine));
            }
            else if (wind == 0)
            {
                // 平稳无风：自由自在地漫游，大而缓的位移
                seq.Append(tr.DOLocalMove(new Vector3(0.26f, 0.14f, 0f) * comp, 3.2f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 4f), 3.2f).SetEase(Ease.InOutSine));
                seq.Append(tr.DOLocalMove(new Vector3(-0.2f, 0.24f, 0f) * comp, 3.6f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -4.5f), 3.6f).SetEase(Ease.InOutSine));
                seq.Append(tr.DOLocalMove(new Vector3(-0.3f, 0.04f, 0f) * comp, 3f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 3f), 3f).SetEase(Ease.InOutSine));
            }
            else
            {
                // 风弱：缓慢的下坠漂移
                seq.Append(tr.DOLocalMove(new Vector3(0.08f, -0.22f, 0f) * comp, 2.6f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 3.5f), 2.6f).SetEase(Ease.InOutSine));
                seq.Append(tr.DOLocalMove(new Vector3(-0.14f, -0.1f, 0f) * comp, 2.2f).SetEase(Ease.InOutSine));
                seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -2f), 2.2f).SetEase(Ease.InOutSine));
            }

            seq.SetLoops(-1, loopType);
            _kiteSwaySequence = seq;
        }

        /// <summary>
        /// 一次性顿挫动效，叠加在 Accent 层上，结束回到原位，不打断高度/风况补间。
        /// 支持：lift（上冲回落）/ sink（下坠沉降）/ taut（前扯抖动）/ drop（猛地下坠）/ flutter（原地挣扎扑腾）。
        /// </summary>
        public void PlayKiteAccent(string profile)
        {
            if (!IsKiteShowing) return;

            _kiteAccentSequence?.Kill();
            _kiteAccentSequence = null;

            var tr = _kiteRenderer.transform;
            // 位移在高度层的子空间里，随缩放自动变小，无需额外乘缩放系数
            var seq = DOTween.Sequence();

            switch (NormalizeMotionProfile(profile))
            {
                case "lift":
                    seq.Append(tr.DOLocalMove(new Vector3(0.14f, 0.3f, 0f), 0.35f).SetEase(Ease.OutQuad));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -6f), 0.35f).SetEase(Ease.OutQuad));
                    break;

                case "sink":
                    seq.Append(tr.DOLocalMove(new Vector3(-0.06f, -0.28f, 0f), 0.4f).SetEase(Ease.OutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 5f), 0.4f).SetEase(Ease.OutSine));
                    break;

                // 绷紧：猛地被扯直，然后绷住缓慢微颤（小幅慢速拉锯，不是震动）
                case "taut":
                    seq.Append(tr.DOLocalMove(new Vector3(0.3f, 0.06f, 0f), 0.2f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -9f), 0.2f).SetEase(Ease.OutCubic));
                    seq.Append(tr.DOLocalMove(new Vector3(0.26f, 0.03f, 0f), 0.3f).SetEase(Ease.InOutSine));
                    seq.Append(tr.DOLocalMove(new Vector3(0.31f, 0.07f, 0f), 0.26f).SetEase(Ease.InOutSine));
                    seq.Append(tr.DOLocalMove(new Vector3(0.27f, 0.04f, 0f), 0.3f).SetEase(Ease.InOutSine));
                    break;

                case "drop":
                    seq.Append(tr.DOLocalMove(new Vector3(0.04f, -0.42f, 0f), 0.55f).SetEase(Ease.InQuad));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 7f), 0.55f).SetEase(Ease.InQuad));
                    break;

                // 挣扎：左右交替的几下小拉扯，力度递减
                case "flutter":
                    seq.Append(tr.DOLocalMove(new Vector3(0.1f, 0.14f, 0f), 0.2f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -5f), 0.2f).SetEase(Ease.OutCubic));
                    seq.Append(tr.DOLocalMove(new Vector3(-0.08f, 0.06f, 0f), 0.26f).SetEase(Ease.InOutSine));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, 4.5f), 0.26f).SetEase(Ease.InOutSine));
                    seq.Append(tr.DOLocalMove(new Vector3(0.06f, 0.1f, 0f), 0.22f).SetEase(Ease.OutCubic));
                    seq.Join(tr.DOLocalRotate(new Vector3(0f, 0f, -3.5f), 0.22f).SetEase(Ease.OutCubic));
                    break;

                default:
                    seq.Kill();
                    return;
            }

            // 回到原位，保证可与高度/风况补间叠加
            seq.Append(tr.DOLocalMove(Vector3.zero, 0.5f).SetEase(Ease.InOutSine));
            seq.Join(tr.DOLocalRotate(Vector3.zero, 0.5f).SetEase(Ease.InOutSine));
            _kiteAccentSequence = seq;
        }

        /// <summary>
        /// 隐藏风筝 Rig
        /// </summary>
        /// <param name="duration">淡出时长</param>
        public IEnumerator HideKite(float duration = 1)
        {
            if (!IsKiteShowing) yield break;

            KillKiteTweens();

            if (duration <= 0f)
            {
                _kiteRenderer.SetAlpha(0);
                _kiteBaseRenderer.SetAlpha(0);
            }
            else
            {
                _kiteBaseFadeTween = _kiteBaseRenderer.DOFade(0, duration);
                _kiteFadeTween = _kiteRenderer.DOFade(0, duration);
                yield return _kiteFadeTween.WaitForCompletion();
            }

            _kiteRootPivot.gameObject.SetActive(false);
            _kiteBaseRenderer.gameObject.SetActive(false);
            if (_kiteMask != null)
            {
                _kiteMask.enabled = false;
            }
        }

        #endregion

        /// <summary>
        /// 淡入（异步协程版本）
        /// </summary>
        /// <param name="duration">淡入时长</param>
        /// <returns>协程</returns>
        public IEnumerator FadeInAsync(float duration = 1)
        {
            if (_backgroundSpriteRenderer == null) yield break;
            
            _backgroundSpriteRenderer.gameObject.SetActive(true);
            yield return _backgroundSpriteRenderer.DOFade(1, duration).WaitForCompletion();
        }

        /// <summary>
        /// 淡出（异步协程版本）
        /// </summary>
        /// <param name="duration">淡出时长</param>
        /// <returns>协程</returns>
        public IEnumerator FadeOutAsync(float duration = 1)
        {
            if (_backgroundSpriteRenderer == null) yield break;
            
            _backgroundSpriteRenderer.gameObject.SetActive(true);
            yield return _backgroundSpriteRenderer.DOFade(0, duration).WaitForCompletion();
            _backgroundSpriteRenderer.gameObject.SetActive(false);
        }

        /// <summary>
        /// 淡入（同步版本，启动协程）
        /// </summary>
        /// <param name="duration">淡入时长</param>
        public void FadeInSync(float duration = 1)
        {
            StartCoroutine(FadeInAsync(duration));
        }

        /// <summary>
        /// 淡出（同步版本，启动协程）
        /// </summary>
        /// <param name="duration">淡出时长</param>
        public void FadeOutSync(float duration = 1)
        {
            StartCoroutine(FadeOutAsync(duration));
        }
    }
}