Alex教程每一P的教程原代码加上我自己的理解初步理解写的注释，可供学习Alex教程的人参考
此代码仅为较上一P有所改变的代码

【Unity教程】从0编程制作类银河恶魔城游戏_哔哩哔哩_bilibili

Entity.cs

 using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Entity : MonoBehaviour
{
    [Header("Knockback info")]
    [SerializeField] protected Vector2 knockbackDirection;//被击打后的速度信息
    [SerializeField] protected float knockbackDuration;//被击打的时间
    protected bool isKnocked;//此值通过卡住SetVelocity函数的方式用来阻止当一个角色被攻击时，会乱动的情况

    [Header("Collision Info")]
    public Transform attackCheck;//transform类，代表的时物体的位置,用来控制攻击检测的位置
    public float attackCheckRadius;//检测半径
    [SerializeField] protected Transform groundCheck;//transform类，代表的时物体的位置,后面会来定位子组件的位置    
    [SerializeField] protected float groundCheckDistance;
    [SerializeField] protected Transform wallCheck;//transform类，代表的时物体的位置,后面会来定位子组件的位置    
    [SerializeField] protected float wallCheckDistance;
    [SerializeField] protected LayerMask whatIsGround;//LayerMask类，与Raycast配合，https://docs.unity3d.com/cn/current/ScriptReference/Physics.Raycast.html

    #region 定义Unity组件
    public SpriteRenderer sr { get; private set; }
    public Animator anim { get; private set; }//这样才能配合着拿到自己身上的animator的控制权
    public Rigidbody2D rb { get; private set; }//配合拿到身上的Rigidbody2D组件控制权
    public EntityFX fx { get; private set; }//拿到EntityFX
    public CharacterStats stats { get; private set; }
    public CapsuleCollider2D cd { get; private set; }
    #endregion
    public int facingDir { get; private set; } = 1;
    protected bool facingRight = true;//判断是否朝右


    public System.Action onFlipped;//一个自身不用写函数，只是接受其他函数并调用他们的函数
    //https://blog.csdn.net/weixin_44299531/article/details/131343583

    protected virtual void Awake()
    {
        
    }
    protected virtual void Start()
    {
        anim = GetComponentInChildren<Animator>();//拿到自己子组件身上的animator的控制权
        sr = GetComponentInChildren<SpriteRenderer>();
        fx = GetComponent<EntityFX>();拿到的组件上的EntityFX控制权
        rb = GetComponent<Rigidbody2D>();
        stats = GetComponent<CharacterStats>();
        cd = GetComponent<CapsuleCollider2D>();
    }
    protected virtual void Update()
    {

    }

    protected virtual void Exit()
    {

    }
    public virtual void DamageImpact()
    {

        
        StartCoroutine("HitKnockback");//调用被击打后产生后退效果的函数
        //Debug.Log(gameObject.name+"was damaged");
    }
    
    public virtual void SlowEntityBy(float _slowPercentage,float flowDuration)//减缓一切速度函数
    {
        
    }

    protected virtual void ReturnDefaultSpeed()//动画速度恢复正常函数
    {
        anim.speed = 1;
    }

    protected virtual IEnumerator HitKnockback()
    {
        isKnocked = true;//此值通过卡住SetVelocity函数的方式用来阻止当一个角色被攻击时，会乱动的情况
        rb.velocity = new Vector2(knockbackDirection.x * -facingDir, knockbackDirection.y);
        yield return new WaitForSeconds(knockbackDuration);
        isKnocked = false;
    }
    //被击打后产生后退效果的函数
    #region 速度函数Velocity
    public virtual void SetZeroVelocity()
    {
        if(isKnocked)
        {
            return;
        }
        rb.velocity = new Vector2(0, 0);
    }//设置速度为0函数

    public virtual void SetVelocity(float _xVelocity, float _yVelocity)
    {
        if(isKnocked)
            return;此值通过卡住SetVelocity函数的方式用来阻止当一个角色被攻击时，会乱动的情况

        rb.velocity = new Vector2(_xVelocity, _yVelocity);//将rb的velocity属性设置为对应的想要的二维向量。因为2D游戏的速度就是二维向量
        FlipController(_xVelocity);//在其他设置速度的时候调用翻转控制器
    }//控制速度的函数，此函数在其他State中可能会使用，但仅能通过player.SeVelocity调用
    #endregion
    #region 翻转函数Flip
    public virtual void Flip()
    {
        facingDir = facingDir * -1;
        facingRight = !facingRight;
        transform.Rotate(0, 180, 0);//旋转函数,transform不需要额外定义，因为他是自带的

        if(onFlipped != null)
          onFlipped();

    }//翻转函数

    public virtual void FlipController(float _x)//目前设置x，目的时能在空中时也能转身
    {
        if (_x > 0 && !facingRight)//当速度大于0且没有朝右时，翻转
        {
            Flip();
        }
        else if (_x < 0 && facingRight)
        {
            Flip();
        }
    }
    #endregion
    #region 碰撞函数Collision
    public virtual bool IsGroundDetected()
    {
        return Physics2D.Raycast(groundCheck.position, Vector2.down, groundCheckDistance, whatIsGround);
    }//通过RayCast检测是否挨着地面,https://docs.unity3d.com/cn/current/ScriptReference/Physics2D.Raycast.html
    //xxxxxxxx()   => xxxxxxxx  == xxxxxxxxxx() return xxxxxxxxx;
    public virtual bool IsWallDetected()
    {
        return Physics2D.Raycast(wallCheck.position, Vector2.right * facingDir, wallCheckDistance, whatIsGround);
    }//通过RayCast检测是否挨着地面,https://docs.unity3d.com/cn/current/ScriptReference/Physics2D.Raycast.html
    //xxxxxxxx()   => xxxxxxxx  == xxxxxxxxxx() return xxxxxxxxx;
    protected virtual void OnDrawGizmos()
    {
        Gizmos.DrawLine(groundCheck.position, new Vector3(groundCheck.position.x, groundCheck.position.y - groundCheckDistance));//绘制一条从 from(前面的) 开始到 to（后面的） 的线。
        Gizmos.DrawLine(wallCheck.position, new Vector3(wallCheck.position.x + wallCheckDistance, wallCheck.position.y));//绘制一条从 from(前面的) 开始到 to（后面的） 的线。
        Gizmos.DrawWireSphere(attackCheck.position, attackCheckRadius);//https://docs.unity3d.com/2022.3/Documentation/ScriptReference/Gizmos.DrawWireSphere.html
        //绘制具有中心和半径的线框球体。
    }//画图函数
    #endregion
    

    public virtual void Die()
    {

    }
}

EntityFX.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EntityFX : MonoBehaviour
{
    private SpriteRenderer sr;//定义SR组件来保持要用的组件
    [Header("Flash FX")]
    [SerializeField] private Material hitMat;//要改成的材料
    [SerializeField] private float flashDuration;//闪光的时间
    private Material originalMat;//原来的材料

    [Header("Aliment colors")]
    [SerializeField] private Color[] chillColor;
    [SerializeField] private Color[] igniteColor;
    [SerializeField] private Color[] shockColor;

    private void Start()
    {
        sr = GetComponentInChildren<SpriteRenderer>();//从子组件中拿到SR组件


        originalMat = sr.material;//拿到原来的材料

    }

    public void MakeTransprent(bool isClear)
    {
        if (isClear)
            sr.color = Color.clear;
        else
            sr.color = Color.white;
    }

    private IEnumerator FlashFX()//被打后该触发的函数
    {
        sr.material = hitMat;

        //修复在元素效果期间击中，颜色变红的情况
        Color currentColor = sr.color;
        sr.color = Color.white;


        yield return new WaitForSeconds(flashDuration);

        sr.color = currentColor;
        sr.material = originalMat;
    } //IEnumertor本质就是将一个函数分块执行，只有满足某些条件才能执行下一段代码，此函数有StartCoroutine调用
    //https://www.zhihu.com/tardis/bd/art/504607545?source_id=1001
    private void RedColorBlink()//使角色闪烁的函数
    {
        if (sr.color != Color.white)
        {
            sr.color = Color.white;
        }
        else
        {
            sr.color = Color.red;
        }
    }
    private void CancelColorChange()//使角色停止闪烁的函数
    {
        CancelInvoke();//取消该 MonoBehaviour 上的所有 Invoke 调用。
        //https://docs.unity3d.com/cn/current/ScriptReference/MonoBehaviour.CancelInvoke.html
        sr.color = Color.white;
    }

    public void ShockFxFor(float _second)
    {
        InvokeRepeating("ShockColorFx", 0, .3f);
        Invoke("CancelColorChange", _second);
    }

    public void ChillFxFor(float _second)
    {
        InvokeRepeating("ChillColor", 0, .3f);
        Invoke("CancelColorChange", _second);
    }



    public void IgniteFxFor(float _second)
    {
        InvokeRepeating("IgniteColorFX", 0, .3f);
        Invoke("CancelColorChange", _second);
    }

    private void IgniteColorFX()
    {
        if (sr.color != igniteColor[0])
            sr.color = igniteColor[0];
        else
            sr.color = igniteColor[1];
    }

    private void ShockColorFx()
    {
        if (sr.color != shockColor[0])
            sr.color = shockColor[0];
        else
            sr.color = shockColor[1];
    }

    private void ChillColor()
    {
        if (sr.color != chillColor[0])
            sr.color = chillColor[0];
        else
            sr.color = chillColor[1];
    }

   
}

CharacterStats.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CharacterStats : MonoBehaviour
{
    private EntityFX fx;


    [Header("Major stats")]
    public Stat strength; // 力量 增伤1点 爆伤增加 1% 物抗
    public Stat agility;// 敏捷 闪避 1% 闪避几率增加 1%
    public Stat intelligence;// 1 点 魔法伤害 1点魔抗 
    public Stat vitality;//加血的

    [Header("Offensive stats")]
    public Stat damage;
    public Stat critChance;      // 暴击率
    public Stat critPower;       //150% 爆伤

    [Header("Defensive stats")]
    public Stat maxHealth;
    public Stat armor;
    public Stat evasion;//闪避值
    public Stat magicResistance;

    [Header("Magic stats")]
    public Stat fireDamage;
    public Stat iceDamage;
    public Stat lightingDamage;


    public bool isIgnited;  // 持续烧伤
    public bool isChilded;  // 削弱护甲 20%
    public bool isShocked;  // 降低敌人命中率

    [SerializeField] private float ailmentsDuration = 4;
    private float ignitedTimer;
    private float chilledTimer;
    private float shockedTimer;


    private float igniteDamageCooldown = .3f;
    private float ignitedDamageTimer;
    private int igniteDamage;
    [SerializeField] private GameObject shockStrikePrefab;
    private int shockDamage;


    public System.Action onHealthChanged;//使角色在Stat里调用UI层的函数
    protected bool isDead;

    [SerializeField] public int currentHealth;


    protected virtual void Start()
    {
        critPower.SetDefaultValue(150);//设置默认爆伤
        currentHealth = GetMaxHealthValue();

        fx = GetComponent<EntityFX>();
    }

    protected virtual void Update()
    {
        //所有的状态都设置上默认持续时间，持续过了就结束状态
        ignitedTimer -= Time.deltaTime;
        chilledTimer -= Time.deltaTime;
        shockedTimer -= Time.deltaTime;
        ignitedDamageTimer -= Time.deltaTime;

        if (ignitedTimer < 0)
            isIgnited = false;
        if (chilledTimer < 0)
            isChilded = false;
        if (shockedTimer < 0)
            isShocked = false;

        //被点燃后，出现多段伤害后点燃停止
        if(isIgnited)
        ApplyIgnitedDamage();
    }

    

    public virtual void DoDamage(CharacterStats _targetStats)//计算后造成伤害函数
    {
        if (TargetCanAvoidAttack(_targetStats))设置闪避
        {
            return;
        }



        int totleDamage = damage.GetValue() + strength.GetValue();

        //爆伤设置
        if (CanCrit())
        {
            totleDamage = CalculateCriticalDamage(totleDamage);
        }

        totleDamage = CheckTargetArmor(_targetStats, totleDamage);//设置防御

        _targetStats.TakeDamage(totleDamage);

        //DoMagicaDamage(_targetStats);
    }
    protected virtual void Die()
    {
        isDead = true;
    }
    public virtual void TakeDamage(int _damage)//造成伤害是出特效
    {
        fx.StartCoroutine("FlashFX");//IEnumertor本质就是将一个函数分块执行，只有满足某些条件才能执行下一段代码，此函数有StartCoroutine调用
                                     //https://www.zhihu.com/tardis/bd/art/504607545?source_id=1001
        DecreaseHealthBy(_damage);

        GetComponent<Entity>().DamageImpact();

        if (currentHealth < 0 && !isDead)
            Die();

    }
    protected virtual void DecreaseHealthBy(int _damage)//此函数用来改变当前生命值，不调用特效
    {
        currentHealth -= _damage;

        if (onHealthChanged != null)
        {
            onHealthChanged();
        }
    }

    #region Magical damage and ailements
    private void ApplyIgnitedDamage()
    {
        if (ignitedDamageTimer < 0 )
        {
            DecreaseHealthBy(igniteDamage);
            if (currentHealth < 0 && !isDead)
                Die();
            ignitedDamageTimer = igniteDamageCooldown;
        }
    }被点燃后，出现多段伤害后点燃停止
    public virtual void DoMagicaDamage(CharacterStats _targetStats)//法伤计算和造成元素效果调用的地方
    {
        int _fireDamage = fireDamage.GetValue();
        int _iceDamage = iceDamage.GetValue();
        int _lightingDamage = lightingDamage.GetValue();

        int totleMagicalDamage = _fireDamage + _iceDamage + _lightingDamage + intelligence.GetValue();
        totleMagicalDamage = CheckTargetResistance(_targetStats, totleMagicalDamage);

        _targetStats.TakeDamage(totleMagicalDamage);

        //防止循环在所有元素伤害为0时出现死循环
        if (Mathf.Max(_fireDamage, _iceDamage, _lightingDamage) <= 0)
            return;

        //让元素效果取决与伤害


        //为了防止出现元素伤害一致而导致无法触发元素效果
        //循环判断触发某个元素效果

        AttemptyToApplyAilement(_targetStats, _fireDamage, _iceDamage, _lightingDamage);
    }

    private  void AttemptyToApplyAilement(CharacterStats _targetStats, int _fireDamage, int _iceDamage, int _lightingDamage)
    {
        bool canApplyIgnite = _fireDamage > _iceDamage && _fireDamage > _lightingDamage;
        bool canApplyChill = _iceDamage > _lightingDamage && _iceDamage > _fireDamage;
        bool canApplyShock = _lightingDamage > _fireDamage && _lightingDamage > _iceDamage;



        while (!canApplyIgnite && !canApplyChill && !canApplyShock)
        {
            if (Random.value < .25f)
            {
                canApplyIgnite = true;
                Debug.Log("Ignited");
                _targetStats.ApplyAilments(canApplyIgnite, canApplyChill, canApplyShock);
                return;
            }
            if (Random.value < .35f)
            {
                canApplyChill = true;
                Debug.Log("Chilled");
                _targetStats.ApplyAilments(canApplyIgnite, canApplyChill, canApplyShock);
                return;
            }
            if (Random.value < .55f)
            {
                canApplyShock = true;
                Debug.Log("Shocked");
                _targetStats.ApplyAilments(canApplyIgnite, canApplyChill, canApplyShock);
                return;
            }

        }


        if (canApplyIgnite)
        {
            _targetStats.SetupIgniteDamage(Mathf.RoundToInt(_fireDamage * .2f));
        }

        if (canApplyShock)
            _targetStats.SetupShockStrikeDamage(Mathf.RoundToInt(_lightingDamage * .1f));

        //给点燃伤害赋值

        _targetStats.ApplyAilments(canApplyIgnite, canApplyChill, canApplyShock);
    }//造成元素效果

    public void ApplyAilments(bool _ignite, bool _chill, bool _shock)//判断异常状态
    {
        bool canApplyIgnite = !isIgnited && !isChilded && !isShocked;
        bool canApplyChill = !isIgnited && !isChilded && !isShocked;
        bool canApplyShock = !isIgnited && !isChilded;
        //使当isShock为真时Shock里的函数仍然可以调用

        if (_ignite && canApplyIgnite)
        {
            isIgnited = _ignite;
            ignitedTimer = ailmentsDuration;

            fx.IgniteFxFor(ailmentsDuration);
        }
        if (_chill && canApplyChill)
        {
            isChilded = _chill;
            chilledTimer = ailmentsDuration;

            float slowPercentage = .2f;

            GetComponent<Entity>().SlowEntityBy(slowPercentage, ailmentsDuration);

            fx.ChillFxFor(ailmentsDuration);
        }
        if (_shock && canApplyShock)
        {
            if(!isShocked)
            {
                ApplyShock(_shock);
            }
            else
            {
                if (GetComponent<Player>() != null)//防止出现敌人使玩家进入shock状态后也出现闪电
                    return;
                HitNearestTargetWithShockStrike();
            }//isShock为真时反复执行的函数为寻找最近的敌人，创建闪电实例并传入数据

        }
    }

    public void ApplyShock(bool _shock)
    {
        if (isShocked)
            return;

        isShocked = _shock;
        shockedTimer = ailmentsDuration;

        fx.ShockFxFor(ailmentsDuration);
    }//触电变色效果

    private void HitNearestTargetWithShockStrike()
    {
        Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, 25);//找到环绕自己的所有碰撞器

        float closestDistance = Mathf.Infinity;//正无穷大的表示形式（只读）
        Transform closestEnemy = null;


        //https://docs.unity3d.com/cn/current/ScriptReference/Mathf.Infinity.html
        foreach (var hit in colliders)
        {
            if (hit.GetComponent<Enemy>() != null && Vector2.Distance(transform.position, hit.transform.position) > 1)// 防止最近的敌人就是Shock状态敌人自己
            {
                float distanceToEnemy = Vector2.Distance(transform.position, hit.transform.position);//拿到与敌人之间的距离
                if (distanceToEnemy < closestDistance)//比较距离，如果离得更近，保存这个敌人的位置,更改最近距离
                {
                    closestDistance = distanceToEnemy;
                    closestEnemy = hit.transform;
                }
            }

            if (closestEnemy == null)
                closestEnemy = transform;
        }

        if (closestEnemy != null)
        {
            GameObject newShockStrike = Instantiate(shockStrikePrefab, transform.position, Quaternion.identity);
            newShockStrike.GetComponent<ShockStrike_Controller>().Setup(shockDamage, closestEnemy.GetComponent<CharacterStats>());
        }
    }//给最近的敌人以雷劈

    public void SetupIgniteDamage(int _damage) => igniteDamage = _damage;//给点燃伤害赋值
    public void SetupShockStrikeDamage(int _damage) => shockDamage = _damage;//雷电伤害赋值

    #endregion

    #region Stat calculations

    private int CheckTargetResistance(CharacterStats _targetStats, int totleMagicalDamage)//法抗计算
    {
        totleMagicalDamage -= _targetStats.magicResistance.GetValue() + (_targetStats.intelligence.GetValue() * 3);
        totleMagicalDamage = Mathf.Clamp(totleMagicalDamage, 0, int.MaxValue);
        return totleMagicalDamage;
    }
    
   
   
    private static int CheckTargetArmor(CharacterStats _targetStats, int totleDamage)//防御计算
    {

        //被冰冻后，角色护甲减少
        if (_targetStats.isChilded)
            totleDamage -= Mathf.RoundToInt(_targetStats.armor.GetValue() * .8f);
        else
            totleDamage -= _targetStats.armor.GetValue();
        totleDamage = Mathf.Clamp(totleDamage, 0, int.MaxValue);
        return totleDamage;
    }

    private bool TargetCanAvoidAttack(CharacterStats _targetStats)//闪避计算
    {
        int totleEvation = _targetStats.evasion.GetValue() + _targetStats.agility.GetValue();

        //我被麻痹后
        //敌人的闪避率提升
        if (isShocked)
            totleEvation += 20;

        if (Random.Range(0, 100) < totleEvation)
        {
            return true;
        }
        return false;
    }

    private bool CanCrit()//判断是否暴击
    {
        int totleCriticalChance = critChance.GetValue() + agility.GetValue();

        if (Random.Range(0, 100) <= totleCriticalChance)
        {
            return true;
        }

        return false;
    }

    private int CalculateCriticalDamage(int _damage)//计算暴击后伤害
    {
        float totleCirticalPower = (critPower.GetValue() + strength.GetValue()) * .01f;

        float critDamage = _damage * totleCirticalPower;

        return Mathf.RoundToInt(critDamage);//返回舍入为最近整数的
    }
    public int GetMaxHealthValue()
    {

        return maxHealth.GetValue() + vitality.GetValue() * 10;

    }//统计生命值函数

    #endregion
}

PlayerStat.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerStat : CharacterStats
{
    private Player player;
    

    

    protected override void Start()
    {
        player = GetComponent<Player>();
        base.Start();
    }
    public override void DoDamage(CharacterStats _targetStats)
    {
        base.DoDamage(_targetStats);

    }
    public override void TakeDamage(int _damage)
    {
        base.TakeDamage(_damage);
    }
    protected override void Die()
    {
        base.Die();

        player.Die();
    }
}

EnemyStat.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyStat : CharacterStats
{
    private Enemy enemy;
    public override void DoDamage(CharacterStats _targetStats)
    {
        base.DoDamage(_targetStats);
    }

    protected override void Die()
    {
        base.Die();
        enemy.Die();
    }

    protected override void Start()
    {
        enemy = GetComponent<Enemy>();
        base.Start();
    }

    public override void TakeDamage(int _damage)
    {
        base.TakeDamage(_damage);

    }
}

Sword_Skill_Controller.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Sword_Skill_Controller : MonoBehaviour
{
    private float returnSpeed;
    private bool isReturning;

    private Animator anim;
    private Rigidbody2D rb;
    private CircleCollider2D cd;
    private Player player;

    private bool canRotate = true;

    private float freezeTimeDuration;
    [Header("Piece info")]
    [SerializeField] float pierceAmount;

    [Header("Bounce info")]
    private float bounceSpeed;//设置弹跳速度
    private bool isBouncing;//判断是否可以弹跳
    private int bounceAmount;//弹跳的次数
    public List<Transform> enemyTargets;//保存所有在剑范围内的敌人的列表
    private int targetIndex;//设置targetIndex作为敌人计数器

    [Header("Spin info")]
    private float maxTravelDistance;//最大攻击距离
    private float spinDuration;//持续时间
    private float spinTimer;//计时器
    private bool wasStopped;//是否停止
    private bool isSpinning;

    private float hitTimer;
    private float hitColldown;

    private float spinDirection;//用来不断推进剑在x轴上移动的值
   
    private void Awake()
    {
        anim = GetComponentInChildren<Animator>();
        rb = GetComponent<Rigidbody2D>();
        cd = GetComponent<CircleCollider2D>();
    }

    private void DestroyMe()
    {
        Destroy(gameObject);
    }
    public void ReturnSword()
    {
        rb.constraints = RigidbodyConstraints2D.FreezeAll;//修复剑只要不触碰到物体就无法收回的bug
        //rb.isKinematic = false;
        transform.parent = null;
        isReturning = true;
    }
    public void SetupSword(Vector2 _dir,float _gravityScale,Player _player,float _freezeTimeDuration,float _returnSpeed)
    {
        player = _player;
        rb.velocity = _dir;
        rb.gravityScale = _gravityScale;
        freezeTimeDuration = _freezeTimeDuration;
        returnSpeed = _returnSpeed;
        if(pierceAmount <= 0)
          anim.SetBool("Rotation", true); //其次在pierceAmount > 0时不启动旋转动画
        spinDirection = Mathf.Clamp(rb.velocity.x, -1, 1);用来不断推进剑在x轴上移动的值
        //Mathf.Clamp,当剑使向右飞的时候，direction为1，反之为-1
        //https://docs.unity3d.com/cn/current/ScriptReference/Mathf.Clamp.html
        Invoke("DestroyMe",7);//在一定时间后自动销毁剑
    }

    public void SetupBounce(bool _isBouncing,int _bounceAmount,float _bounceSpeed)
    {
        isBouncing = _isBouncing;
        bounceAmount = _bounceAmount;
        bounceSpeed = _bounceSpeed;
    }

    public void SetupPierce(int _pierceAomunt)
    {
        pierceAmount = _pierceAomunt;
    }

    public void SetupSpin(bool _isSpinning, float _maxTravelDistance,float _spinDuration,float _hitCooldown)
    {
        isSpinning = _isSpinning;
        maxTravelDistance = _maxTravelDistance;
        spinDuration = _spinDuration;
        hitColldown = _hitCooldown;
    }

    private void Update()
    {
        if (canRotate)
            transform.right = rb.velocity;//使武器随着速度而改变朝向

        if (isReturning)
        {
            transform.position = Vector2.MoveTowards(transform.position, player.transform.position, returnSpeed * Time.deltaTime);//从原来的位置返回到player的位置
                                                                                                                                  //并且随着时间增加而增加速度
            if (Vector2.Distance(transform.position, player.transform.position) < 1)//当剑与player的距离小于一定距离，清除剑
            {
                player.CatchTheSword();
            }
        }


        BounceLogic();
        SpinLogic();
    }

    private void SpinLogic()
    {
        if (isSpinning)//首先当isSpining为true才可进入
        {
            if (Vector2.Distance(player.transform.position, transform.position) > maxTravelDistance && !wasStopped)//当剑与角色到达最大攻击距离，stop为true，停止剑运动，给剑一个倒计时
            {
                StopWhenSpinning();
            }
            if (wasStopped)//当stop为true，倒计时过了，回归角色
            {
                spinTimer -= Time.deltaTime;                                                                    //spinDirection一直是1或者-1，但position是变化的
                transform.position = Vector2.MoveTowards(transform.position, new Vector2(transform.position.x + spinDirection, transform.position.y), 1.5f * Time.deltaTime);//让剑在x轴上移动的函数
                if (spinTimer < 0)
                {
                    isReturning = true;
                    isSpinning = false;
                }

                hitTimer -= Time.deltaTime;

                if (hitTimer < 0)
                {
                    hitTimer = hitColldown;
                    Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, 1);
                    foreach (var hit in colliders)
                    {
                        if (hit.GetComponent<Enemy>() != null)
                        {
                            hit.GetComponent<Enemy>().DamageImpact();
                        }
                    }
                }
            }
        }
    }

    private void StopWhenSpinning()
    {
        wasStopped = true;
        rb.constraints = RigidbodyConstraints2D.FreezeAll;
        spinTimer = spinDuration;
    }

    private void BounceLogic()
    {
        if (isBouncing && enemyTargets.Count > 0)
        {

            transform.position = Vector2.MoveTowards(transform.position, enemyTargets[targetIndex].position, bounceSpeed * Time.deltaTime);
            //3.当可以弹跳且列表内数量大于0，调用ToWords,这将使剑能够跳到敌人身上
            if (Vector2.Distance(transform.position, enemyTargets[targetIndex].position) < .1f)
            {
                enemyTargets[targetIndex].GetComponent<Enemy>().DamageImpact();
                targetIndex++;
                bounceAmount--;//设置弹跳次数
                if (bounceAmount <= 0)
                {
                    isBouncing = false;
                    isReturning = true;
                }//这样会使当弹跳次数为0时，返回到角色手中
                if (targetIndex >= enemyTargets.Count)
                {
                    targetIndex = 0;
                }
            }//利用与目标距离的判断，使剑接近目标距离时切换到下一个目标。
             //且如果所有目标都跳完了，切回第一个
        }
    }

    private void OnTriggerEnter2D(Collider2D collision)//传入碰到的物体的碰撞器
    {
        if (isReturning)
        {
            return;
        }//修复在返回时扔出时没有碰到任何物体，但返回时碰到了物体导致剑的一些性质发生改变的问题，及回来的时候调用了OnTriggerEnter2D

        if(collision.GetComponent<Enemy>()!=null)
        {
            Enemy enemy = collision.GetComponent<Enemy>();
            SwordSkillDamage(enemy);
        }


        SetupTargetsForBounce(collision);

        StuckInto(collision);
    }//打开IsTrigger时才可使用该函数

    private void SwordSkillDamage(Enemy enemy)
    {
        player.stats.DoDamage(enemy.GetComponent<CharacterStats>());
        enemy.StartCoroutine("FreezeTimeFor", freezeTimeDuration);
    }//造成伤害函数

    private void SetupTargetsForBounce(Collider2D collision)
    {
        if (collision.GetComponent<Enemy>() != null)//首先得碰到敌人，只有碰到敌人才会跳
        {
            if (isBouncing && enemyTargets.Count <= 0)
            {
                Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, 10);
                foreach (var hit in colliders)
                {
                    if (hit.GetComponent<Enemy>() != null)
                    {
                        enemyTargets.Add(hit.transform);
                    }
                }
            }
        }
    }

    //https://docs.unity3d.com/cn/current/ScriptReference/Collider2D.OnTriggerEnter2D.html

    private void StuckInto(Collider2D collision)
    {
        if(pierceAmount > 0 && collision.GetComponent<Enemy>()!= null)//本质就是能穿过敌人，在amount>0时不执行能让剑卡在敌人里的语句就行
        {
            pierceAmount--;
            return;
        }

        if (isSpinning)
        {
            StopWhenSpinning();
            return;
        }//防止卡在敌人身上

        canRotate = false;
        cd.enabled = false;//相当于关闭碰撞后触发函数。//https://docs.unity3d.com/cn/current/ScriptReference/Collision2D-enabled.html

        rb.isKinematic = true;//开启物理学反应 https://docs.unity3d.com/cn/current/ScriptReference/Rigidbody2D-isKinematic.html
        rb.constraints = RigidbodyConstraints2D.FreezeAll;//冻结所有移动

        if (isBouncing&&enemyTargets.Count>0)//修复剑卡不到墙上的bug
            return;

        //终止对动画的改变和终止附在敌人上
        transform.parent = collision.transform;//设置sword的父组件为碰撞到的物体
        anim.SetBool("Rotation", false);
    }
    
}

Sword_Skill.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public enum SwordType
{
    Regular,
    Bounce,
    Pierce,
    Spin
}

public class Sword_Skill : Skill
{
    public SwordType swordType = SwordType.Regular;//创建应一个enum列表,后面用来判断切换状态


    [Header("Bounce Info")]
    [SerializeField] private int bounceAmount;
    [SerializeField] private float bounceGravity;
    [SerializeField] private float bounceSpeed;

    [Header("Pierce info")]
    [SerializeField] private int pierceAmount;
    [SerializeField] private float pierceGravity;

    [Header("Skill Info")]
    [SerializeField] private GameObject swordPrefab;//sword预制体
    [SerializeField] private Vector2 launchForce;//发射力度
    [SerializeField] private float swordGravity;//发射体的重力
    [SerializeField] private float freezeTimeDuration;
    [SerializeField] private float returnSpeed;

    [Header("Spin info")]
    [SerializeField] private float hitCooldown = .35f;//攻击冷却
    [SerializeField] private float maxTravelDistance = 7;//最大攻击距离
    [SerializeField] private float spinDuration = 2;//持续时间
    [SerializeField] private float spinGravity = 1;

    [Header("Aim dots")]
    [SerializeField] private int numberOfDots;//需要的点的数量
    [SerializeField] private float spaceBetweenDots;//相隔的距离
    [SerializeField] private GameObject dotPrefab;//dot预制体
    [SerializeField] private Transform dotsParent;//不是很懂

    private GameObject[] dots;//dot组
    private Vector2 finalDir;
    protected override void Start()
    {
        base.Start();

        GenerateDots();//生成点函数

        SetupGravity();
    }

    private void SetupGravity()//每个剑的状态都对应了不同的剑重力
    {
        if(swordType == SwordType.Pierce)
        {
            swordGravity = pierceGravity;
        }
        if(swordType == SwordType.Bounce)
        {
            swordGravity = bounceGravity;
        }
        if(swordType == SwordType.Spin)
        {
            swordGravity = spinGravity;
        }
    }

    protected override void Update()
    {
        base.Update();
        if (Input.GetKeyUp(KeyCode.Mouse1))
        {
            finalDir = new Vector2(AimDirection().normalized.x * launchForce.x, AimDirection().normalized.y * launchForce.y);
            //将位移量改为单位向量分别与力度的x，y相乘作为finalDir
        }

        if (Input.GetKey(KeyCode.Mouse1))
        {
            for (int i = 0; i < dots.Length; i++)
            {
                dots[i].transform.position = DotsPosition(i * spaceBetweenDots);//用循环为每个点以返回值赋值（传入值为每个点的顺序i*点间距
            }
        }
    }
    public void CreateSword()
    {
        GameObject newSword = Instantiate(swordPrefab, player.transform.position, transform.rotation);//创造实例，初始位置为此时player的位置
        Sword_Skill_Controller newSwordScript = newSword.GetComponent<Sword_Skill_Controller>();//获得Controller
        
        if(swordType == SwordType.Bounce)
        {
            newSwordScript.SetupBounce(true, bounceAmount,returnSpeed);
        }
        else if(swordType == SwordType.Pierce)
        {
            newSwordScript.SetupPierce(pierceAmount);
        }
        else if(swordType == SwordType.Spin)
        {
            newSwordScript.SetupSpin(true, maxTravelDistance, spinDuration,hitCooldown);
        }


        
        newSwordScript.SetupSword(finalDir, swordGravity, player,freezeTimeDuration,bounceSpeed);//调用Controller里的SetupSword函数，给予其速度和重力和player实例

        player.AssignNewSword(newSword);//调用在player中保存通过此方法创造出的sword实例
        DotsActive(false);//关闭点的显示
    }
    #region Aim region
    public Vector2 AimDirection()
    {
        Vector2 playerPosition = player.transform.position;//拿到玩家此时的位置
        Vector2 mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);//https://docs.unity3d.com/cn/current/ScriptReference/Camera.ScreenToWorldPoint.html
                                                                                    //大概就是返回屏幕上括号里的参数的位置，这里返回了鼠标的位置
                                                                                    //拿到此时鼠标的位置
        Vector2 direction = mousePosition - playerPosition;//获得距离的绝对向量

        return direction;//返回距离向量
    }

    public void DotsActive(bool _isActive)
    {
        for (int i = 0; i < dots.Length; i++)
        {
            dots[i].SetActive(_isActive);//设置每个点是否显示函数
        }
    }
    private void GenerateDots()//生成点函数
    {
        dots = new GameObject[numberOfDots];//为dot赋予实例数量
        for (int i = 0; i < numberOfDots; i++)
        {
            dots[i] = Instantiate(dotPrefab, player.transform.position, Quaternion.identity, dotsParent);//对象与世界轴或父轴完全对齐
            //https://docs.unity3d.com/cn/current/ScriptReference/Quaternion-identity.html
            dots[i].SetActive(false);//关闭dot
        }
    }

    private Vector2 DotsPosition(float t)//传入顺序相关的点间距
    {
        Vector2 position = (Vector2)player.transform.position +
            new Vector2
            (AimDirection().normalized.x * launchForce.x,
             AimDirection().normalized.y * launchForce.y) * t  //基本间距
             + .5f * (Physics2D.gravity * swordGravity) * (t * t)//重力影响
             ;
        //t是控制之间点间距的
        return position;//返回位置
    }//设置点间距函数
    #endregion
}

Clone_Skill_Controller.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

//Clone_Skill_Controller是绑在Clone体上的也就是Prefah上的
public class Clone_Skill_Controller : MonoBehaviour
{
    private Player player;
    private Animator anim;//声明animator
    private SpriteRenderer sr;//定义Sr
    [SerializeField] private float colorLoosingSpeed;//加速消失时间 

    private float cloneTimer;//定时器
    [SerializeField]private Transform attackCheck;
    [SerializeField] private float attackCheckRadius = .8f;
    private Transform closestEnemy;
    
    private int facingDir = 1;//这个是控制位置的，产生的克隆体的位置能在敌人外侧

    private bool canDuplicateClone;
    private float chanceToDuplicate;

    private void Awake()
    {
        sr = GetComponent<SpriteRenderer>();//拿到Sr
        anim = GetComponent<Animator>();//拿到anim
    }
    private void Update()
    {
        cloneTimer -= Time.deltaTime;

        if(cloneTimer < 0)
        {
            sr.color = new Color(1, 1, 1,sr.color.a-(Time.deltaTime * colorLoosingSpeed));//设置sr消失
        }
        if(sr.color.a<0)
        {
            Destroy(gameObject);
        }
    }
    public void SetupClone(Transform _newTransform,float _cloneDuration,bool _canAttack,Vector3 _offset,Transform _closestEnemy,bool _canDuplicateClone,float _chanceToDuplicate,Player _player)
    {

        if(_canAttack)
        {                                     
            anim.SetInteger("AttackNumber", Random.Range(1, 3));//返回[minInclusive..maxInclusive]（范围包括在内）内的随机浮点值。如果minInclusive大于maxInclusive，则数字会自动交换。
        }

        player = _player;
        //Random.Range()//https://docs.unity3d.com/cn/current/ScriptReference/Random.Range.html
        transform.position = _newTransform.position+_offset;//这个函数实现了将克隆出来的对象的位置与Dash之前的位置重合的效果


        cloneTimer = _cloneDuration;
        
        closestEnemy = _closestEnemy;
        canDuplicateClone = _canDuplicateClone;
        chanceToDuplicate = _chanceToDuplicate;


        FaceCloseTarget();
    }

    private void AnimationTrigger()
    {
        cloneTimer = -.1f;
    }
    private void AttackTrigger()
    {
        Collider2D[] colliders = Physics2D.OverlapCircleAll(attackCheck.position, attackCheckRadius);//创建一个碰撞器组，保存所有圈所碰到的碰撞器
        //https://docs.unity3d.com/2022.3/Documentation/ScriptReference/Physics2D.OverlapCircleAll.html
        foreach (var hit in colliders)//https://blog.csdn.net/m0_52358030/article/details/121722077
        {
            if (hit.GetComponent<Enemy>() != null)
            {
                player.stats.DoDamage(hit.GetComponent<CharacterStats>());

                //使角色克隆体的攻击有概率产生新的克隆体
                if (canDuplicateClone)
                {
                    if(Random.Range(1,100)<chanceToDuplicate)
                    {
                        SkillManager.instance.clone.CreateClone(hit.transform, new Vector3(1.5f*facingDir, 0));
                    }
                }
            }
        }
    }

    private void FaceCloseTarget()
    {
        if(closestEnemy != null)
        {
            if(transform.position.x>closestEnemy.position.x)//敌人在左面，转一圈
            {
                facingDir = -1;//这个是控制位置的
                transform.Rotate(0,180,0);
              
            }
        }

    }
}

Clone_Skill.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Clone_Skill : Skill
{
    [Header("Clone Info")]
    [SerializeField] private GameObject clonePrefab;//克隆原型
    [SerializeField] private float cloneDuration;//克隆持续时间

    [SerializeField] private bool canAttack;// 判断是否可以攻击

    [SerializeField] private bool createCloneOnDashStart;
    [SerializeField] private bool createCloneOnDashOver;
    [SerializeField] private bool canCreateCloneOnCounterAttack;

    [Header("Clone can duplicate")]
    [SerializeField] private bool canDuplicateClone;
    [SerializeField] private float chanceToDuplicate;

    [Header("Crystal instead of clone")]
    public bool crystalInsteadOfClone;


    public void CreateClone(Transform _clonePosition,Vector3 _offset)//传入克隆位置
    {
        if(crystalInsteadOfClone)
        {
            SkillManager.instance.crystal.CreateCrystal();
           
            return;
        }//让所有的生成克隆的技能都变成生成水晶


        GameObject newClone = Instantiate(clonePrefab);//创建新的克隆//克隆 original 对象并返回克隆对象。
        //https://docs.unity3d.com/cn/current/ScriptReference/Object.Instantiate.html

        newClone.GetComponent<Clone_Skill_Controller>().SetupClone(_clonePosition,cloneDuration,canAttack,_offset,FindClosestEnemy(newClone.transform),canDuplicateClone,chanceToDuplicate,player);//调试clone的位置,同时调试克隆持续时间                                                                                            //Controller绑在克隆原型上的，所以用GetComponent                                                                                        
    }

    //让冲刺留下来的克隆在开始和结束各有一个
    public void CreateCloneOnDashStart()
    {
        if (createCloneOnDashStart)
            CreateClone(player.transform, Vector3.zero);
    }

    public void CreateCloneOnDashOver()
    {
        if(createCloneOnDashOver)
            CreateClone(player.transform, Vector3.zero);
    }

    //反击后产生一个克隆被刺敌人
    public void CanCreateCloneOnCounterAttack(Transform _enemyTransform)
    {
        if (canCreateCloneOnCounterAttack)
            StartCoroutine(CreateCloneWithDelay(_enemyTransform, new Vector3(1 * player.facingDir, 0, 0)));
    }
    //整个延迟生成
    private IEnumerator CreateCloneWithDelay(Transform _enemyTransform, Vector3 _offset)
    {
        yield return new WaitForSeconds(.4f);
        CreateClone(_enemyTransform, _offset);

    }
}

Blackhole_Skill_Controller.cs

using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;

public class Blackhole_Skill_Controller : MonoBehaviour
{
    [SerializeField] private GameObject hotKeyPrefab;
    [SerializeField] private List<KeyCode> KeyCodeList;

    private float maxSize;//最大尺寸
    private float growSpeed;//变大速度
    private float shrinkSpeed;//缩小速度
    private float blackholeTimer;

    private bool canGrow = true;//是否可以变大
    private bool canShrink;//缩小
    private bool canCreateHotKeys = true;专门控制后面进入的没法生成热键
    private bool cloneAttackReleased;
    private bool playerCanDisaper = true;

    private int amountOfAttacks = 4;
    private float cloneAttackCooldown = .3f;
    private float cloneAttackTimer;

    private List<Transform> targets = new List<Transform>();
    private List<GameObject> createdHotKey = new List<GameObject>();

    public bool playerCanExitState { get; private set; }

    
    public void SetupBlackhole(float _maxSize,float _growSpeed,float _shrinkSpeed,int _amountOfAttacks,float _cloneAttackCooldown,float _blackholeDuration)
    {
        maxSize = _maxSize;
        growSpeed = _growSpeed;
        shrinkSpeed = _shrinkSpeed;
        amountOfAttacks = _amountOfAttacks;
        cloneAttackCooldown = _cloneAttackCooldown;
        blackholeTimer = _blackholeDuration;

        if (SkillManager.instance.clone.crystalInsteadOfClone)//释放水晶时角色不消失
            playerCanDisaper = false;

            
    }

    private void Update()
    {
        blackholeTimer -= Time.deltaTime;
        cloneAttackTimer -= Time.deltaTime;

        if(blackholeTimer <= 0)
        {
            blackholeTimer = Mathf.Infinity;//防止重复检测
            if (targets.Count > 0)//只有有target才释放攻击
            {
                ReleaseCloneAttack();//释放攻击
            }
            else
               
                FinishBlackholeAbility();//缩小黑洞
        }

        if (Input.GetKeyDown(KeyCode.R)&& targets.Count > 0)
        {
            
            ReleaseCloneAttack();
        }

        CloneAttackLogic();

        if (canGrow && !canShrink)
        {
            //这是控制物体大小的参数
            transform.localScale = Vector2.Lerp(transform.localScale, new Vector2(maxSize, maxSize), growSpeed * Time.deltaTime);
            //类似MoveToward，不过是放大到多少大小 https://docs.unity3d.com/cn/current/ScriptReference/Vector2.Lerp.html
        }
        if (canShrink)
        {
            transform.localScale = Vector2.Lerp(transform.localScale, new Vector2(0, 0), shrinkSpeed * Time.deltaTime);

            if (transform.localScale.x <= 1f)
            {
                Destroy(gameObject);
            }
        }
    }

    //释放技能
    private void ReleaseCloneAttack()
    {
        cloneAttackReleased = true;
        canCreateHotKeys = false;

        DestroyHotKeys();

        if(playerCanDisaper)
        {
            playerCanDisaper = false;
            PlayerManager.instance.player.fx.MakeTransprent(true);
        }
       
    }

    private void CloneAttackLogic()
    {
        if (cloneAttackTimer < 0 && cloneAttackReleased&&amountOfAttacks>0)
        {
            cloneAttackTimer = cloneAttackCooldown;

            int randomIndex = Random.Range(0, targets.Count);


            //限制攻击次数和设置攻击偏移量
            float _offset;

            if (Random.Range(0, 100) > 50)
                _offset = 1.5f;
            else
                _offset = -1.5f;

           
            if (SkillManager.instance.clone.crystalInsteadOfClone)
            {
                SkillManager.instance.crystal.CreateCrystal(); //让生成克隆变成生成水晶
                SkillManager.instance.crystal.CurrentCrystalChooseRandomTarget(); //让黑洞里替换出来的水晶能够随机选择目标

            }
            else
            {
                SkillManager.instance.clone.CreateClone(targets[randomIndex], new Vector3(_offset, 0, 0));
            }
            
            amountOfAttacks--;


            if (amountOfAttacks <= 0)
            {
                Invoke("FinishBlackholeAbility", 0.5f);
            }
        }
    }

    //完成黑洞技能后
    private void FinishBlackholeAbility()
    {
        DestroyHotKeys();
        canShrink = true;
        cloneAttackReleased = false;
        playerCanExitState = true;
        
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.GetComponent<Enemy>()!=null)
        {
            collision.GetComponent<Enemy>().FreezeTime(true);
            CreateHotKey(collision);
        }
    }
    private void OnTriggerExit2D(Collider2D collision)
    {
        if (collision.GetComponent<Enemy>() != null)
        {
            collision.GetComponent<Enemy>().FreezeTime(false);
           
        }
    }

    //创建QTE函数
    private void CreateHotKey(Collider2D collision)
    {
        if(KeyCodeList.Count == 0)//当所有的KeyCode都被去除，就不在创建实例
        {
            return;
        }

        if(!canCreateHotKeys)//这是当角色已经开大了，不在创建实例
        {
            return;
        }
        
        //创建实例
        GameObject newHotKey = Instantiate(hotKeyPrefab, collision.transform.position + new Vector3(0, 2), Quaternion.identity);

        //将实例添加进列表
        createdHotKey.Add(newHotKey);


        //随机KeyCode传给HotKey，并且传过去一个毁掉一个
        KeyCode choosenKey = KeyCodeList[Random.Range(0, KeyCodeList.Count)];

        KeyCodeList.Remove(choosenKey);

        Blackhole_Hotkey_Controller newHotKeyScript = newHotKey.GetComponent<Blackhole_Hotkey_Controller>();

        newHotKeyScript.SetupHotKey(choosenKey, collision.transform, this);
    }

    //添加点击hotkey后对应的敌人进入敌人列表
    public void AddEnemyToList(Transform _myEnemy)
    {
        targets.Add(_myEnemy);
    }

    //销毁Hotkey
    private void DestroyHotKeys()
    {

        if(createdHotKey.Count <= 0)
        {
            return;
        }
        for (int i = 0; i < createdHotKey.Count; i++)
        {
            Destroy(createdHotKey[i]); 
        }

    }
    
}

PlayerBlackholeState.cs

using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;

public class PlayerBlackholeState : PlayerState
{
    private float flyTime = .4f;//飞行时间
    private bool skillUsed;//技能是否在被使用
    private float defaultGravity;

    public PlayerBlackholeState(Player _player, PlayerStateMachine _stateMachine, string _animBoolName) : base(_player, _stateMachine, _animBoolName)
    {
    }

    public override void AnimationFinishTrigger()
    {
        base.AnimationFinishTrigger();
    }

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

        skillUsed = false;
        stateTimer = flyTime;
        defaultGravity = rb.gravityScale;
        rb.gravityScale = 0;
    }

    public override void Exit()
    {
        base.Exit();
        rb.gravityScale = defaultGravity;
        player.fx.MakeTransprent(false);
    }

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

        //使角色释放技能后能飞起来
        if (stateTimer > 0)
        {
            rb.velocity = new Vector2(0, 15);
        }

        if(stateTimer < 0)
        {
            rb.velocity = new Vector2(0, -.1f);

            if(!skillUsed)
            {
                if(player.skill.blackhole.CanUseSkill())//创建实体
                skillUsed = true;
            }
        }

        if(player.skill.blackhole.SkillCompleted())
        {
            stateMachine.ChangeState(player.airState);
        }
    }
    
    
}