using System;
using System.Collections;
using System.Collections.Generic;
using Godot;
 
/// <summary>
/// 房间内活动物体基类, 所有物体都必须继承该类,
/// ActivityObject 使用的时候代码和场景分离的设计模式, 所以创建时必须指定模板场景路径, 这样做的好处是一个模板场景可以用在多个代码类上, 同样一个代码类也可以指定不同的目模板场景, 
/// ActivityObject 子类实例化请不要直接使用 new, 而用该在类上标上 [RegisterActivity(id, prefabPath)],
/// ActivityObject 类会自动扫描并注册物体, 然后使用而是使用 ActivityObject.Create(id) 来创建实例
/// </summary>
[Tool]
public abstract partial class ActivityObject : CharacterBody2D, IDestroy
{
    /// <summary>
    /// 是否是调试模式
    /// </summary>
    public static bool IsDebug { get; set; }
 
    /// <summary>
    /// 当前物体类型id, 用于区分是否是同一种物体, 如果不是通过 ActivityObject.Create() 函数创建出来的对象那么 ItemId 为 null
    /// </summary>
    public string ItemId { get; private set; }
 
    /// <summary>
    /// 是否是静态物体, 如果为true, 则会禁用移动处理
    /// </summary>
    public bool IsStatic { get; set; }
    
    /// <summary>
    /// 当前物体显示的精灵图像, 节点名称必须叫 "AnimatedSprite2D", 类型为 AnimatedSprite2D
    /// </summary>
    public AnimatedSprite2D AnimatedSprite { get; private set; }
 
    /// <summary>
    /// 当前物体显示的阴影图像, 节点名称必须叫 "ShadowSprite", 类型为 Sprite2D
    /// </summary>
    public Sprite2D ShadowSprite { get; private set; }
 
    /// <summary>
    /// 当前物体碰撞器节点, 节点名称必须叫 "Collision", 类型为 CollisionShape2D
    /// </summary>
    public CollisionShape2D Collision { get; private set; }
 
    /// <summary>
    /// 是否调用过 Destroy() 函数
    /// </summary>
    public bool IsDestroyed { get; private set; }
    
    /// <summary>
    /// 阴影偏移
    /// </summary>
    public Vector2 ShadowOffset { get; protected set; } = new Vector2(0, 2);
    
    /// <summary>
    /// 移动控制器
    /// </summary>
    public MoveController MoveController { get; private set; }
 
    /// <summary>
    /// 物体移动基础速率
    /// </summary>
    public Vector2 BasisVelocity
    {
        get => MoveController.BasisVelocity;
        set => MoveController.BasisVelocity = value;
    }
 
    /// <summary>
    /// 当前物体归属的区域, 如果为 null 代表不属于任何一个区域
    /// </summary>
    public AffiliationArea AffiliationArea
    {
        get => _affiliationArea;
        set
        {
            if (value != _affiliationArea)
            {
                _affiliationArea = value;
                OnAffiliationChange();
            }
        }
    }
 
    /// <summary>
    /// 是否正在投抛过程中
    /// </summary>
    public bool IsThrowing => _throwForce != null && !_isFallOver;
 
    /// <summary>
    /// 当前物体的海拔高度, 如果大于0, 则会做自由落体运动, 也就是执行投抛代码
    /// </summary>
    public float Altitude
    {
        get => _altitude;
        set
        {
            _altitude = value;
            _hasResilienceVerticalSpeed = false;
        }
    }
 
    private float _altitude = 0;
 
    /// <summary>
    /// 物体纵轴移动速度, 如果设置大于0, 就可以营造向上投抛物体的效果, 该值会随着重力加速度衰减
    /// </summary>
    public float VerticalSpeed
    {
        get => _verticalSpeed;
        set
        {
            _verticalSpeed = value;
            _hasResilienceVerticalSpeed = false;
        }
    }
 
    private float _verticalSpeed;
    
    /// <summary>
    /// 物体投抛时旋转速度, 角度制
    /// </summary>
    public float ThrowRotationDegreesSpeed { get; set; }
 
    /// <summary>
    /// 落地之后是否回弹
    /// </summary>
    public bool Bounce { get; set; } = true;
 
    /// <summary>
    /// 物体下坠回弹的强度
    /// </summary>
    public float BounceStrength { get; set; } = 0.5f;
 
    /// <summary>
    /// 物体下坠回弹后的运动速度衰减量
    /// </summary>
    public float BounceSpeed { get; set; } = 0.75f;
    
    /// <summary>
    /// 投抛状态下物体碰撞器大小, 如果 (x, y) 都小于 0, 则默认使用 AnimatedSprite 的默认动画第一帧的大小
    /// </summary>
    public Vector2 ThrowCollisionSize { get; set; } = new Vector2(-1, -1);
 
    /// <summary>
    /// 是否启用垂直方向上的运动模拟, 默认开启, 如果禁用, 那么下落和投抛效果, 同样 Throw() 函数也将失效
    /// </summary>
    public bool EnableVerticalMotion { get; set; } = true;
 
    /// <summary>
    /// 是否启用物体更新行为, 默认 true, 如果禁用, 则会停止当前物体的 Process(), PhysicsProcess() 调用, 并且禁用 Collision 节点, 禁用后所有组件也同样被禁用行为
    /// </summary>
    public bool EnableBehavior
    {
        get => _enableBehavior;
        set
        {
            if (value != _enableBehavior)
            {
                _enableBehavior = value;
                SetProcess(value);
                SetPhysicsProcess(value);
                if (value)
                {
                    Collision.Disabled = _enableBehaviorCollisionDisabledFlag;
                }
                else
                {
                    _enableBehaviorCollisionDisabledFlag = Collision.Disabled;
                    Collision.Disabled = true;
                }
            }
        }
    }
 
    /// <summary>
    /// 是否启用自定义行为, 默认 true, 如果禁用, 则会停止调用子类重写的 Process(), PhysicsProcess() 函数, 并且当前物体除 MoveController 以外的组件 Process(), PhysicsProcess() 也会停止调用
    /// </summary>
    public bool EnableCustomBehavior { get; set; } = true;
    
    /// <summary>
    /// 所在的 World 对象
    /// </summary>
    public World World { get; private set; }
    
    // --------------------------------------------------------------------------------
 
    //组件集合
    private List<KeyValuePair<Type, Component>> _components = new List<KeyValuePair<Type, Component>>();
    //是否初始化阴影
    private bool _initShadow;
    //上一帧动画名称
    private string _prevAnimation;
    //上一帧动画
    private int _prevAnimationFrame;
 
    //播放 Hit 动画
    private bool _playHit;
    private float _playHitSchedule;
 
    //混色shader材质
    private ShaderMaterial _blendShaderMaterial;
    
    //存储投抛该物体时所产生的数据
    private ActivityFallData _fallData = new ActivityFallData();
    
    //所在层级
    private RoomLayerEnum _currLayer;
    
    //标记字典
    private Dictionary<string, object> _signMap;
    
    //开启的协程
    private List<CoroutineData> _coroutineList;
 
    //物体所在区域
    private AffiliationArea _affiliationArea;
 
    //是否是第一次下坠
    private bool _firstFall = true;
    
    //下坠是否已经结束
    private bool _isFallOver = true;
 
    //下坠状态碰撞器形状
    private RectangleShape2D _throwRectangleShape;
 
    //投抛移动速率
    private ExternalForce _throwForce;
    
    //落到地上回弹的速度
    private float _resilienceVerticalSpeed = 0;
    private bool _hasResilienceVerticalSpeed = false;
 
    //是否启用物体行为
    private bool _enableBehavior = true;
    private bool _enableBehaviorCollisionDisabledFlag;
 
    // --------------------------------------------------------------------------------
    
    //实例索引
    private static long _instanceIndex = 0;
 
    //初始化节点
    private void _InitNode(string itemId, World world)
    {
        World = world;
 
        ItemId = itemId;
        Name = GetType().Name + (_instanceIndex++);
        
        AnimatedSprite = GetNode<AnimatedSprite2D>("AnimatedSprite");
        _blendShaderMaterial = AnimatedSprite.Material as ShaderMaterial;
        ShadowSprite = GetNode<Sprite2D>("ShadowSprite");
        ShadowSprite.Visible = false;
        Collision = GetNode<CollisionShape2D>("Collision");
 
        MotionMode = MotionModeEnum.Floating;
        MoveController = AddComponent<MoveController>();
 
        OnInit();
    }
 
    /// <summary>
    /// 子类重写的 _Ready() 可能会比 _InitNode() 函数调用晚, 所以禁止子类重写, 如需要 _Ready() 类似的功能需重写 OnInit()
    /// </summary>
    public sealed override void _Ready()
    {
#if TOOLS
        // 在工具模式下创建的 template 节点自动创建对应的必要子节点
        if (Engine.IsEditorHint())
        {
            var parent = GetParent();
            if (parent != null)
            {
                //寻找 owner
                Node owner;
                if (parent.Owner != null)
                {
                    owner = parent.Owner;
                }
                else if (Plugin.Plugin.Instance.GetEditorInterface().GetEditedSceneRoot() == this)
                {
                    owner = this;
                }
                else
                {
                    owner = parent;
                }
 
                var sprite = GetNodeOrNull<Sprite2D>("ShadowSprite");
                //创建Shadow
                if (sprite == null)
                {
                    sprite = new Sprite2D();
                    sprite.Name = "ShadowSprite";
                    sprite.ZIndex = -1;
                    var material =
                        ResourceManager.Load<ShaderMaterial>(ResourcePath.resource_material_Blend_tres, false);
                    material.SetShaderParameter("blend", new Color(0, 0, 0, 0.47058824F));
                    material.SetShaderParameter("schedule", 1);
                    sprite.Material = material;
                    AddChild(sprite);
                    sprite.Owner = owner;
                }
                else if (sprite.Material == null)
                {
                    var material =
                        ResourceManager.Load<ShaderMaterial>(ResourcePath.resource_material_Blend_tres, false);
                    material.SetShaderParameter("blend", new Color(0, 0, 0, 0.47058824F));
                    material.SetShaderParameter("schedule", 1);
                    sprite.Material = material;
                }
 
                var animatedSprite = GetNodeOrNull<AnimatedSprite2D>("AnimatedSprite");
                //创建 Sprite2D
                if (animatedSprite == null)
                {
                    animatedSprite = new AnimatedSprite2D();
                    animatedSprite.Name = "AnimatedSprite";
                    var material =
                        ResourceManager.Load<ShaderMaterial>(ResourcePath.resource_material_Blend_tres, false);
                    material.SetShaderParameter("blend", new Color(1, 1, 1, 1));
                    material.SetShaderParameter("schedule", 0);
                    animatedSprite.Material = material;
                    AddChild(animatedSprite);
                    animatedSprite.Owner = owner;
                }
                else if (animatedSprite.Material == null)
                {
                    var material =
                        ResourceManager.Load<ShaderMaterial>(ResourcePath.resource_material_Blend_tres, false);
                    material.SetShaderParameter("blend", new Color(1, 1, 1, 1));
                    material.SetShaderParameter("schedule", 0);
                    animatedSprite.Material = material;
                }
 
                //创建Collision
                if (GetNodeOrNull("Collision") == null)
                {
                    var co = new CollisionShape2D();
                    co.Name = "Collision";
                    AddChild(co);
                    co.Owner = owner;
                }
            }
        }
#endif
    }
 
    /// <summary>
    /// 显示阴影
    /// </summary>
    public void ShowShadowSprite()
    {
        if (!_initShadow)
        {
            _initShadow = true;
            ShadowSprite.Material = ResourceManager.BlendMaterial;
        }
 
        var anim = AnimatedSprite.Animation;
        
        var frame = AnimatedSprite.Frame;
        if (_prevAnimation != anim || _prevAnimationFrame != frame)
        {
            var frames = AnimatedSprite.SpriteFrames;
            if (frames != null && frames.HasAnimation(anim))
            {
                //切换阴影动画
                ShadowSprite.Texture = frames.GetFrameTexture(anim, frame);
            }
        }
 
        _prevAnimation = anim;
        _prevAnimationFrame = frame;
 
        CalcShadow();
        ShadowSprite.Visible = true;
    }
 
    /// <summary>
    /// 隐藏阴影
    /// </summary>
    public void HideShadowSprite()
    {
        ShadowSprite.Visible = false;
    }
 
    /// <summary>
    /// 设置默认序列帧动画的第一帧
    /// </summary>
    public void SetDefaultTexture(Texture2D texture)
    {
        if (AnimatedSprite.SpriteFrames == null)
        {
            SpriteFrames spriteFrames = new SpriteFrames();
            AnimatedSprite.SpriteFrames = spriteFrames;
            spriteFrames.AddFrame("default", texture);
        }
        else
        {
            SpriteFrames spriteFrames = AnimatedSprite.SpriteFrames;
            spriteFrames.SetFrame("default", 0, texture);
        }
    
        AnimatedSprite.Play("default");
    }
 
    /// <summary>
    /// 获取默认序列帧动画的第一帧
    /// </summary>
    public Texture2D GetDefaultTexture()
    {
        return AnimatedSprite.SpriteFrames.GetFrameTexture("default", 0);
    }
    
    /// <summary>
    /// 获取当前序列帧动画的 Texture2D
    /// </summary>
    public Texture2D GetCurrentTexture()
    {
        var spriteFrames = AnimatedSprite.SpriteFrames;
        if (spriteFrames == null)
        {
            return null;
        }
        return spriteFrames.GetFrameTexture(AnimatedSprite.Animation, AnimatedSprite.Frame);
    }
 
    /// <summary>
    /// 物体初始化时调用
    /// </summary>
    public virtual void OnInit()
    {
    }
    
    /// <summary>
    /// 返回是否能与其他ActivityObject互动
    /// </summary>
    /// <param name="master">触发者</param>
    public virtual CheckInteractiveResult CheckInteractive(ActivityObject master)
    {
        return new CheckInteractiveResult(this);
    }
 
    /// <summary>
    /// 与其它ActivityObject互动时调用, 如果要检测是否能互动请 CheckInteractive() 函数, 如果直接调用该函数那么属于强制互动行为, 例如子弹碰到物体
    /// </summary>
    /// <param name="master">触发者</param>
    public virtual void Interactive(ActivityObject master)
    {
    }
 
    /// <summary>
    /// 开始投抛该物体时调用
    /// </summary>
    protected virtual void OnThrowStart()
    {
    }
    
    /// <summary>
    /// 投抛该物体达到最高点时调用
    /// </summary>
    protected virtual void OnThrowMaxHeight(float height)
    {
    }
 
    /// <summary>
    /// 投抛状态下第一次接触地面时调用, 之后的回弹落地将不会调用该函数
    /// </summary>
    protected virtual void OnFirstFallToGround()
    {
    }
 
    /// <summary>
    /// 投抛状态下每次接触地面时调用
    /// </summary>
    protected virtual void OnFallToGround()
    {
    }
 
    /// <summary>
    /// 投抛结束时调用
    /// </summary>
    protected virtual void OnThrowOver()
    {
    }
 
    /// <summary>
    /// 当前物体销毁时调用, 销毁物体请调用 Destroy() 函数
    /// </summary>
    protected virtual void OnDestroy()
    {
    }
 
    /// <summary>
    /// 每帧调用一次, 物体的 Process() 会在组件的 Process() 之前调用
    /// </summary>
    protected virtual void Process(float delta)
    {
    }
    
    /// <summary>
    /// 每帧调用一次, ProcessOver() 会在组件的 Process() 之后调用
    /// </summary>
    protected virtual void ProcessOver(float delta)
    {
    }
    
    /// <summary>
    /// 每物理帧调用一次, 物体的 PhysicsProcess() 会在组件的 PhysicsProcess() 之前调用
    /// </summary>
    protected virtual void PhysicsProcess(float delta)
    {
    }
    
    /// <summary>
    /// 每物理帧调用一次, PhysicsProcessOver() 会在组件的 PhysicsProcess() 之后调用
    /// </summary>
    protected virtual void PhysicsProcessOver(float delta)
    {
    }
    
    /// <summary>
    /// 如果开启 debug, 则每帧调用该函数, 可用于绘制文字线段等
    /// </summary>
    protected virtual void DebugDraw()
    {
    }
 
    /// <summary>
    /// 归属区域发生改变
    /// </summary>
    protected virtual void OnAffiliationChange()
    {
    }
 
    /// <summary>
    /// 返回当物体 CollisionLayer 是否能与 mask 层碰撞
    /// </summary>
    public bool CollisionWithMask(uint mask)
    {
        return (CollisionLayer & mask) != 0;
    }
    
    /// <summary>
    /// 拾起一个 node 节点, 也就是将其从场景树中移除
    /// </summary>
    public void Pickup()
    {
        var parent = GetParent();
        if (parent != null)
        {
            if (IsThrowing)
            {
                StopThrow();
            }
 
            parent.RemoveChild(this);
        }
    }
 
    /// <summary>
    /// 将一个节点扔到地上
    /// <param name="layer">放入的层</param>
    /// <param name="showShadow">是否显示阴影</param>
    /// </summary>
    public virtual void PutDown(RoomLayerEnum layer, bool showShadow = true)
    {
        _currLayer = layer;
        var parent = GetParent();
        var root = GameApplication.Instance.World.GetRoomLayer(layer);
        if (parent != root)
        {
            if (parent != null)
            {
                parent.RemoveChild(this);
            }
 
            this.AddToActivityRoot(layer);
        }
 
        if (showShadow)
        {
            if (IsInsideTree())
            {
                ShowShadowSprite();
            }
            else
            {
                //注意需要延时调用
                CallDeferred(nameof(ShowShadowSprite));
            }
        }
        else
        {
            ShadowSprite.Visible = false;
        }
    }
 
    /// <summary>
    /// 将一个节点扔到地上
    /// </summary>
    /// <param name="position">放置的位置</param>
    /// <param name="layer">放入的层</param>
    /// <param name="showShadow">是否显示阴影</param>
    public void PutDown(Vector2 position, RoomLayerEnum layer, bool showShadow = true)
    {
        PutDown(layer);
        Position = position;
    }
 
    /// <summary>
    /// 将该节点投抛出去
    /// </summary>
    /// <param name="altitude">初始高度</param>
    /// <param name="verticalSpeed">纵轴速度</param>
    /// <param name="velocity">移动速率</param>
    /// <param name="rotate">旋转速度</param>
    public void Throw(float altitude, float verticalSpeed, Vector2 velocity, float rotate)
    {
        var parent = GetParent();
        if (parent == null)
        {
            GameApplication.Instance.World.YSortLayer.AddChild(this);
        }
        else if (parent != GameApplication.Instance.World.YSortLayer)
        {
            parent.RemoveChild(this);
            GameApplication.Instance.World.YSortLayer.AddChild(this);
        }
        
        Altitude = altitude;
        //Position = Position + new Vector2(0, altitude);
        VerticalSpeed = verticalSpeed;
        ThrowRotationDegreesSpeed = rotate;
        if (_throwForce != null)
        {
            MoveController.RemoveForce(_throwForce);
        }
 
        _throwForce = new ExternalForce("throw");
        _throwForce.Velocity = velocity;
        MoveController.AddConstantForce(_throwForce);
 
        InitThrowData();
    }
 
    /// <summary>
    /// 将该节点投抛出去
    /// </summary>
    /// <param name="position">初始位置</param>
    /// <param name="altitude">初始高度</param>
    /// <param name="verticalSpeed">纵轴速度</param>
    /// <param name="velocity">移动速率</param>
    /// <param name="rotate">旋转速度</param>
    public void Throw(Vector2 position, float altitude, float verticalSpeed, Vector2 velocity, float rotate)
    {
        GlobalPosition = position;
        Throw(altitude, verticalSpeed, velocity, rotate);
    }
 
 
    /// <summary>
    /// 强制停止投抛运动
    /// </summary>
    public void StopThrow()
    {
        _isFallOver = true;
        RestoreCollision();
    }
 
    /// <summary>
    /// 往当前物体上挂载一个组件
    /// </summary>
    public T AddComponent<T>() where T : Component, new()
    {
        var component = new T();
        _components.Add(new KeyValuePair<Type, Component>(typeof(T), component));
        component.ActivityInstance = this;
        return component;
    }
 
    /// <summary>
    /// 移除一个组件, 并且销毁
    /// </summary>
    /// <param name="component">组件对象</param>
    public void RemoveComponent(Component component)
    {
        for (int i = 0; i < _components.Count; i++)
        {
            if (_components[i].Value == component)
            {
                _components.RemoveAt(i);
                component.Destroy();
                return;
            }
        }
    }
 
    /// <summary>
    /// 根据类型获取一个组件
    /// </summary>
    public Component GetComponent(Type type)
    {
        for (int i = 0; i < _components.Count; i++)
        {
            var temp = _components[i];
            if (temp.Key == type)
            {
                return temp.Value;
            }
        }
 
        return null;
    }
 
    /// <summary>
    /// 根据类型获取一个组件
    /// </summary>
    public T GetComponent<T>() where T : Component
    {
        var component = GetComponent(typeof(T));
        if (component == null) return null;
        return (T)component;
    }
 
    /// <summary>
    /// 设置混色材质的颜色
    /// </summary>
    public void SetBlendColor(Color color)
    {
        _blendShaderMaterial.SetShaderParameter("blend", color);
    }
 
    /// <summary>
    /// 获取混色材质的颜色
    /// </summary>
    public Color GetBlendColor()
    {
        return _blendShaderMaterial.GetShaderParameter("blend").AsColor();
    }
    
    /// <summary>
    /// 设置混色材质的强度
    /// </summary>
    public void SetBlendSchedule(float value)
    {
        _blendShaderMaterial.SetShaderParameter("schedule", value);
    }
 
    /// <summary>
    /// 获取混色材质的强度
    /// </summary>
    public float GetBlendSchedule()
    {
        return _blendShaderMaterial.GetShaderParameter("schedule").AsSingle();
    }
    
    
    /// <summary>
    /// 每帧调用一次, 为了防止子类覆盖 _Process(), 给 _Process() 加上了 sealed, 子类需要帧循环函数请重写 Process() 函数
    /// </summary>
    public sealed override void _Process(double delta)
    {
        var newDelta = (float)delta;
        if (EnableCustomBehavior)
        {
            Process(newDelta);
        }
        
        //更新组件
        if (_components.Count > 0)
        {
            if (EnableCustomBehavior) //启用所有组件
            {
                var arr = _components.ToArray();
                for (int i = 0; i < arr.Length; i++)
                {
                    if (IsDestroyed) return;
                    var temp = arr[i].Value;
                    if (temp != null && temp.ActivityInstance == this && temp.Enable)
                    {
                        if (!temp.IsReady)
                        {
                            temp.Ready();
                            temp.IsReady = true;
                        }
 
                        temp.Process(newDelta);
                    }
                }
            }
            else //只更新 MoveController 组件
            {
                if (!MoveController.IsReady)
                {
                    MoveController.Ready();
                    MoveController.IsReady = true;
                }
                MoveController.Process(newDelta);
            }
        }
 
        // 下坠判定
        if (Altitude > 0 || VerticalSpeed != 0)
        {
            if (_isFallOver) // 没有处于下坠状态, 则进入下坠状态
            {
                InitThrowData();
            }
            else
            {
                if (EnableVerticalMotion) //如果启用了纵向运动, 则更新运动
                {
                    GlobalRotationDegrees = GlobalRotationDegrees + ThrowRotationDegreesSpeed * newDelta;
 
                    var ysp = VerticalSpeed;
 
                    _altitude += VerticalSpeed * newDelta;
                    _verticalSpeed -= GameConfig.G * newDelta;
 
                    //当高度大于16时, 显示在所有物体上
                    if (Altitude >= 16)
                    {
                        AnimatedSprite.ZIndex = 20;
                    }
                    else
                    {
                        AnimatedSprite.ZIndex = 0;
                    }
                
                    //达到最高点
                    if (ysp > 0 && ysp * VerticalSpeed < 0)
                    {
                        OnThrowMaxHeight(Altitude);
                    }
 
                    //落地判断
                    if (Altitude <= 0)
                    {
                        _altitude = 0;
 
                        //第一次接触地面
                        if (_firstFall)
                        {
                            _firstFall = false;
                            OnFirstFallToGround();
                        }
 
                        MoveController.ScaleAllForce(BounceSpeed);
                        //如果落地高度不够低, 再抛一次
                        if (Bounce && (!_hasResilienceVerticalSpeed || _resilienceVerticalSpeed > 1))
                        {
                            if (!_hasResilienceVerticalSpeed)
                            {
                                _hasResilienceVerticalSpeed = true;
                                _resilienceVerticalSpeed = -VerticalSpeed * BounceStrength;
                            }
                            else
                            {
                                _resilienceVerticalSpeed = _resilienceVerticalSpeed * BounceStrength;
                            }
                            _verticalSpeed = _resilienceVerticalSpeed;
                            ThrowRotationDegreesSpeed = ThrowRotationDegreesSpeed * BounceStrength;
                            _isFallOver = false;
 
                            OnFallToGround();
                        }
                        else //结束
                        {
                            _verticalSpeed = 0;
 
                            if (_throwForce != null)
                            {
                                MoveController.RemoveForce(_throwForce);
                                _throwForce = null;
                            }
                            _isFallOver = true;
                            
                            OnFallToGround();
                            ThrowOver();
                        }
                    }
                }
 
                //计算精灵位置
                CalcThrowAnimatedPosition();
            }
        }
 
        //阴影
        if (ShadowSprite.Visible)
        {
            //更新阴影贴图, 使其和动画一致
            var anim = AnimatedSprite.Animation;
            var frame = AnimatedSprite.Frame;
            if (_prevAnimation != anim || _prevAnimationFrame != frame)
            {
                //切换阴影动画
                ShadowSprite.Texture = AnimatedSprite.SpriteFrames.GetFrameTexture(anim, AnimatedSprite.Frame);
            }
 
            _prevAnimation = anim;
            _prevAnimationFrame = frame;
 
            //计算阴影
            CalcShadow();
        }
 
        // Hit 动画
        if (_playHit)
        {
            if (_playHitSchedule < 0.05f)
            {
                _blendShaderMaterial.SetShaderParameter("schedule", 1);
            }
            else if (_playHitSchedule < 0.15f)
            {
                _blendShaderMaterial.SetShaderParameter("schedule", Mathf.Lerp(1, 0, (_playHitSchedule - 0.05f) / 0.1f));
            }
            if (_playHitSchedule >= 0.15f)
            {
                _blendShaderMaterial.SetShaderParameter("schedule", 0);
                _playHitSchedule = 0;
                _playHit = false;
            }
            else
            {
                _playHitSchedule += newDelta;
            }
        }
        
        //协程更新
        if (_coroutineList != null)
        {
            ProxyCoroutineHandler.ProxyUpdateCoroutine(ref _coroutineList, newDelta);
        }
 
        ProcessOver(newDelta);
        
        //调试绘制
        if (IsDebug)
        {
            QueueRedraw();
        }
    }
 
    /// <summary>
    /// 每物理帧调用一次, 为了防止子类覆盖 _PhysicsProcess(), 给 _PhysicsProcess() 加上了 sealed, 子类需要帧循环函数请重写 PhysicsProcess() 函数
    /// </summary>
    public sealed override void _PhysicsProcess(double delta)
    {
        var newDelta = (float)delta;
        if (EnableCustomBehavior)
        {
            PhysicsProcess(newDelta);
        }
        
        //更新组件
        if (_components.Count > 0)
        {
            if (EnableCustomBehavior) //启用所有组件
            {
                var arr = _components.ToArray();
                for (int i = 0; i < arr.Length; i++)
                {
                    if (IsDestroyed) return;
                    var temp = arr[i].Value;
                    if (temp != null && temp.ActivityInstance == this && temp.Enable)
                    {
                        if (!temp.IsReady)
                        {
                            temp.Ready();
                            temp.IsReady = true;
                        }
 
                        temp.PhysicsProcess(newDelta);
                    }
                }
            }
            else //只更新 MoveController 组件
            {
                if (!MoveController.IsReady)
                {
                    MoveController.Ready();
                    MoveController.IsReady = true;
                }
                MoveController.PhysicsProcess(newDelta);
            }
        }
 
        PhysicsProcessOver(newDelta);
    }
 
    /// <summary>
    /// 绘制函数, 子类不允许重写, 需要绘制函数请重写 DebugDraw()
    /// </summary>
    public sealed override void _Draw()
    {
        if (IsDebug)
        {
            DebugDraw();
            var arr = _components.ToArray();
            for (int i = 0; i < arr.Length; i++)
            {
                if (IsDestroyed) return;
                var temp = arr[i].Value;
                if (temp != null && temp.ActivityInstance == this && temp.Enable)
                {
                    temp.DebugDraw();
                }
            }
        }
    }
 
    /// <summary>
    /// 重新计算物体阴影的位置和旋转信息, 无论是否显示阴影
    /// </summary>
    public void CalcShadow()
    {
        //缩放
        ShadowSprite.Scale = AnimatedSprite.Scale;
        //阴影角度
        ShadowSprite.Rotation = 0;
        //阴影位置计算
        var pos = AnimatedSprite.GlobalPosition;
        ShadowSprite.GlobalPosition = new Vector2(pos.X + ShadowOffset.X, pos.Y + ShadowOffset.Y + Altitude);
    }
 
    //计算位置
    private void CalcThrowAnimatedPosition()
    {
        if (Scale.Y < 0)
        {
            AnimatedSprite.GlobalPosition = GlobalPosition + new Vector2(0, -Altitude) - _fallData.OriginSpritePosition.Rotated(Rotation) * Scale.Abs();
        }
        else
        {
            AnimatedSprite.GlobalPosition = GlobalPosition + new Vector2(0, -Altitude) + _fallData.OriginSpritePosition.Rotated(Rotation);
        }
    }
 
 
    /// <summary>
    /// 销毁物体
    /// </summary>
    public void Destroy()
    {
        if (IsDestroyed)
        {
            return;
        }
 
        IsDestroyed = true;
        QueueFree();
        OnDestroy();
 
        var arr = _components.ToArray();
        for (int i = 0; i < arr.Length; i++)
        {
            arr[i].Value?.Destroy();
        }
        
        if (AffiliationArea != null)
        {
            AffiliationArea.RemoveItem(this);
        }
    }
 
    /// <summary>
    /// 延时销毁
    /// </summary>
    public void DelayDestroy()
    {
        CallDeferred(nameof(Destroy));
    }
 
    /// <summary>
    /// 继承指定物体的运动速率, 该速率可能会有衰减
    /// </summary>
    public void InheritVelocity(ActivityObject other)
    {
        var velocity = other.Velocity;
        if (velocity != Vector2.Zero)
        {
            var force = MoveController.AddConstantForce(velocity * 0.5f, 15);
            force.EnableResistanceInTheAir = false;
        }
    }
 
    /// <summary>
    /// 触发投抛动作
    /// </summary>
    private void Throw()
    {
        var parent = GetParent();
        //投抛时必须要加入 YSortLayer 节点下
        if (parent == null)
        {
            this.AddToActivityRoot(RoomLayerEnum.YSortLayer);
        }
        else if (parent == GameApplication.Instance.World.NormalLayer)
        {
            parent.RemoveChild(this);
            this.AddToActivityRoot(RoomLayerEnum.YSortLayer);
        }
 
        CalcThrowAnimatedPosition();
        //显示阴影
        ShowShadowSprite();
 
        if (EnableVerticalMotion)
        {
            OnThrowStart();
        }
    }
 
    /// <summary>
    /// 设置下坠状态下的碰撞器
    /// </summary>
    private void SetFallCollision()
    {
        if (_fallData != null && _fallData.UseOrigin)
        {
            _fallData.OriginShape = Collision.Shape;
            _fallData.OriginPosition = Collision.Position;
            _fallData.OriginRotation = Collision.Rotation;
            _fallData.OriginScale = Collision.Scale;
            _fallData.OriginZIndex = ZIndex;
            _fallData.OriginSpritePosition = AnimatedSprite.Position;
            _fallData.OriginCollisionEnable = Collision.Disabled;
            _fallData.OriginCollisionPosition = Collision.Position;
            _fallData.OriginCollisionRotation = Collision.Rotation;
            _fallData.OriginCollisionScale = Collision.Scale;
            _fallData.OriginCollisionMask = CollisionMask;
            _fallData.OriginCollisionLayer = CollisionLayer;
 
            if (_throwRectangleShape == null)
            {
                _throwRectangleShape = new RectangleShape2D();
            }
 
            Collision.Shape = _throwRectangleShape;
            Collision.Position = Vector2.Zero;
            Collision.Rotation = 0;
            Collision.Scale = Vector2.One;
            ZIndex = 0;
            Collision.Disabled = false;
            Collision.Position = Vector2.Zero;
            Collision.Rotation = 0;
            Collision.Scale = Vector2.One;
            CollisionMask = 1;
            CollisionLayer = 0;
            _fallData.UseOrigin = false;
        }
    }
 
    /// <summary>
    /// 重置碰撞器
    /// </summary>
    private void RestoreCollision()
    {
        if (_fallData != null && !_fallData.UseOrigin)
        {
            Collision.Shape = _fallData.OriginShape;
            Collision.Position = _fallData.OriginPosition;
            Collision.Rotation = _fallData.OriginRotation;
            Collision.Scale = _fallData.OriginScale;
            ZIndex = _fallData.OriginZIndex;
            AnimatedSprite.Position = _fallData.OriginSpritePosition;
            Collision.Disabled = _fallData.OriginCollisionEnable;
            Collision.Position = _fallData.OriginCollisionPosition;
            Collision.Rotation = _fallData.OriginCollisionRotation;
            Collision.Scale = _fallData.OriginCollisionScale;
            CollisionMask = _fallData.OriginCollisionMask;
            CollisionLayer = _fallData.OriginCollisionLayer;
 
            _fallData.UseOrigin = true;
        }
    }
 
    /// <summary>
    /// 投抛结束
    /// </summary>
    private void ThrowOver()
    {
        var parent = GetParent();
        var roomLayer = GameApplication.Instance.World.GetRoomLayer(_currLayer);
        if (parent != roomLayer)
        {
            parent.RemoveChild(this);
            roomLayer.AddChild(this);
        }
        RestoreCollision();
 
        OnThrowOver();
    }
 
    //初始化投抛状态数据
    private void InitThrowData()
    {
        SetFallCollision();
 
        _isFallOver = false;
        _firstFall = true;
        _hasResilienceVerticalSpeed = false;
        _resilienceVerticalSpeed = 0;
                
        if (ThrowCollisionSize.X < 0 && ThrowCollisionSize.Y < 0)
        {
            _throwRectangleShape.Size = GetDefaultTexture().GetSize();
        }
        else
        {
            _throwRectangleShape.Size = ThrowCollisionSize;
        }
 
        Throw();
    }
 
    /// <summary>
    /// 设置标记, 用于在物体上记录自定义数据
    /// </summary>
    /// <param name="name">标记名称</param>
    /// <param name="v">存入值</param>
    public void SetSign(string name, object v)
    {
        if (_signMap == null)
        {
            _signMap = new Dictionary<string, object>();
        }
 
        _signMap[name] = v;
    }
 
    /// <summary>
    /// 返回是否存在指定名称的标记数据
    /// </summary>
    public bool HasSign(string name)
    {
        return _signMap == null ? false : _signMap.ContainsKey(name);
    }
 
    /// <summary>
    /// 根据名称获取标记值
    /// </summary>
    public object GetSign(string name)
    {
        if (_signMap == null)
        {
            return null;
        }
 
        _signMap.TryGetValue(name, out var value);
        return value;
    }
 
    /// <summary>
    /// 根据名称获取标记值
    /// </summary>
    public T GetSign<T>(string name)
    {
        if (_signMap == null)
        {
            return default;
        }
 
        _signMap.TryGetValue(name, out var value);
        if (value is T v)
        {
            return v;
        }
        return default;
    }
 
    /// <summary>
    /// 根据名称删除标记
    /// </summary>
    public void RemoveSign(string name)
    {
        if (_signMap != null)
        {
            _signMap.Remove(name);
        }
    }
 
    /// <summary>
    /// 播放受伤动画, 该动画不与 Animation 节点的动画冲突
    /// </summary>
    public void PlayHitAnimation()
    {
        _playHit = true;
        _playHitSchedule = 0;
    }
 
    /// <summary>
    /// 开启一个协程, 返回协程 id, 协程是在普通帧执行的, 支持: 协程嵌套, WaitForSeconds, WaitForFixedProcess, Task, SignalAwaiter
    /// </summary>
    public long StartCoroutine(IEnumerator able)
    {
        return ProxyCoroutineHandler.ProxyStartCoroutine(ref _coroutineList, able);
    }
 
    /// <summary>
    /// 根据协程 id 停止协程
    /// </summary>
    public void StopCoroutine(long coroutineId)
    {
        ProxyCoroutineHandler.ProxyStopCoroutine(ref _coroutineList, coroutineId);
    }
    
    /// <summary>
    /// 停止所有协程
    /// </summary>
    public void StopAllCoroutine()
    {
        ProxyCoroutineHandler.ProxyStopAllCoroutine(ref _coroutineList);
    }
}