[Part 10] The Boss have some bugs and cannot respawn from other scene if die

[Joseph Tang]

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Good to hear your GameManager now works.

[Elvin Sim]

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Can you tell me where to change the code because I don’t which place to put it: For the boss not taking damage, check it’s inspector. Likely the Parry method isn’t completed correctly and parrying remained active. It’s most probably ResetAllAttacks(). So just put an if statement to return ResetAllAttacks at the start if your parrying bool is true.

[Elvin Sim]

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<code>IEnumerator Parry()
{
    attacking = true;
    rb.velocity = Vector2.zero;
    anim.SetBool("Parry", true);
    yield return new WaitForSeconds(0.8f);
    anim.SetBool("Parry", false);

    parrying = false;
    ResetAllAttacks();
}</code>

[Elvin Sim]

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<code>using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class TheHollowKnight : Enemy
{
    public static TheHollowKnight Instance;

    [SerializeField] GameObject slashEffect;
    public Transform SideAttackTransform; 
    public Vector2 SideAttackArea;

    public Transform UpAttackTransform;
    public Vector2 UpAttackArea;

    public Transform DownAttackTransform;
    public Vector2 DownAttackArea;

    public float attackRange;
    public float attackTimer;

    [HideInInspector] public bool facingRight;

    [Header("Ground Check Settings:")]
    [SerializeField] public Transform groundCheckPoint;
    [SerializeField] private float groundCheckY = 0.2f;
    [SerializeField] private float groundCheckX = 0.5f;
    [SerializeField] private LayerMask whatIsGround;

    int hitCounter;
    bool stunned, canStun;
    bool alive;

    [HideInInspector] public float runSpeed;

    public GameObject impactParticle;

    private void Awake()
    {
        if(Instance != null && Instance != this)
        {
            Destroy(gameObject);
        }
        else
        {
            Instance = this;
        }
    }

    // Start is called before the first frame update
    protected override void Start()
    {
        base.Start();
        sr = GetComponentInChildren<SpriteRenderer>();
        anim = GetComponentInChildren<Animator>();
        ChangeState(EnemyStates.THK_Stage1);
        alive = true;
    }

    public bool Grounded()
    {
        if (Physics2D.Raycast(groundCheckPoint.position, Vector2.down, groundCheckY, whatIsGround)
            || Physics2D.Raycast(groundCheckPoint.position + new Vector3(groundCheckX, 0, 0), Vector2.down, groundCheckY, whatIsGround)
            || Physics2D.Raycast(groundCheckPoint.position + new Vector3(-groundCheckX, 0, 0), Vector2.down, groundCheckY, whatIsGround))
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    private void OnDrawGizmos()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawWireCube(SideAttackTransform.position, SideAttackArea);
        Gizmos.DrawWireCube(UpAttackTransform.position, UpAttackArea);
        Gizmos.DrawWireCube(DownAttackTransform.position, DownAttackArea);
    }

    float bloodCountdown;
    float bloodTimer;

    // Update is called once per frame
    protected override void Update()
    {
        base.Update();

        if(health <= 0 && alive)
        {
            Death(0);
        }

        if (!attacking)
        {
            attackCountdown -= Time.deltaTime;
        }

        if (stunned)
        {
            rb.velocity = Vector2.zero;
        }

        bloodCountdown -= Time.deltaTime;
        if(bloodCountdown <= 0 && (currentEnemyState != EnemyStates.THK_Stage1 && currentEnemyState != EnemyStates.THK_Stage2))
        {
            GameObject _orangeBlood = Instantiate(orangeBlood, groundCheckPoint.position, Quaternion.identity);
            Destroy(_orangeBlood, 4f);
            bloodCountdown = bloodTimer;
        }
    }

    public void Flip()
    {
        if(PlayerController.Instance.transform.position.x < transform.position.x && transform.localScale.x > 0)
        {
            transform.eulerAngles = new Vector2(transform.eulerAngles.x, 180);
            facingRight = false;
        }
        else
        {
            transform.eulerAngles = new Vector2(transform.eulerAngles.x, 0);
            facingRight = true;
        }
    }

    protected override void UpdateEnemyState()
    {
        if(PlayerController.Instance != null)
        {
            switch (GetCurrentEnemyState)
            {
                case EnemyStates.THK_Stage1:
                    canStun = true;
                    attackTimer = 3;
                    runSpeed = speed;
                    break;

                case EnemyStates.THK_Stage2:
                    canStun = true;
                    attackTimer = 2;
                    break;

                case EnemyStates.THK_Stage3:
                    canStun = false;
                    attackTimer = 5;
                    bloodTimer = 5f;
                    break;

                case EnemyStates.THK_Stage4:
                    canStun = false;
                    attackTimer = 6;
                    runSpeed = speed / 2;
                    bloodTimer = 1.5f;
                    break;
            }
        }
    }

    protected override void OnCollisionStay2D(Collision2D _other)
    {

    }

    #region attacking
    #region variables
    [HideInInspector] public bool attacking;
    [HideInInspector] public float attackCountdown;
    [HideInInspector] public bool damagedPlayer = false;
    [HideInInspector] public bool parrying;

    [HideInInspector] public Vector2 moveToPosition;
    [HideInInspector] public bool diveAttack;
    public GameObject divingCollider;
    public GameObject pillar;

    [HideInInspector] public bool barrageAttack;
    public GameObject barrageFireball;
    [HideInInspector] public bool outbreakAttack;

    [HideInInspector] public bool bounceAttack;
    [HideInInspector] public float rotationDirectionToTarget;
    [HideInInspector] public int bounceCount;

    #endregion

    #region Control

    public void AttackHandler()
    {
        if(currentEnemyState == EnemyStates.THK_Stage1)
        {
            if(Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(TripleSlash());
            }
            else
            {
                StartCoroutine(Lunge()); 
            }
        }

        if (currentEnemyState == EnemyStates.THK_Stage2)
        {
            if (Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(TripleSlash());
            }
            else
            {
                int _attackChosen = Random.Range(1, 4);
                if(_attackChosen == 1)
                {
                    StartCoroutine(Lunge());
                }
                if(_attackChosen == 2)
                {
                    DiveAttackJump();
                }
                if(_attackChosen == 3)
                {
                    BarrageBendDown();
                }
                if(_attackChosen == 4)
                {
                    DivingPillars();
                }
            }
        }

        if (currentEnemyState == EnemyStates.THK_Stage3)
        {
            int _attackChosen = Random.Range(1, 4);
            if (_attackChosen == 1)
            {
                OutbreakBendDown();
            }
            if (_attackChosen == 2)
            {
                DiveAttackJump();
            }
            if (_attackChosen == 3)
            {
                BarrageBendDown();
            }
            if(_attackChosen == 4)
            {
                BounceAttack();
            }

        }

        if (currentEnemyState == EnemyStates.THK_Stage4)
        {
            if (Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(Slash());
            }
            else
            {
                BounceAttack();
            }
        }
    }

    public void ResetAllAttacks()
    {
        attacking = false;

        StopCoroutine(TripleSlash());
        StopCoroutine(Lunge());
        StopCoroutine(Parry());
        StopCoroutine(Slash());

        diveAttack = false;
        barrageAttack = false;
        outbreakAttack = false;
        bounceAttack = false;
    }
    #endregion


    #region Stage 1
    IEnumerator TripleSlash()
    {
        attacking = true;
        rb.velocity = Vector2.zero;

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.3f);
        anim.ResetTrigger("Slash");

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.5f);
        anim.ResetTrigger("Slash");

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.2f);
        anim.ResetTrigger("Slash");

        ResetAllAttacks();
    }

    void SlashAngle()
    {
        if(PlayerController.Instance.transform.position.x > transform.position.x || PlayerController.Instance.transform.position.x < transform.position.x)
        {
            Instantiate(slashEffect, SideAttackTransform);
        }
        else if (PlayerController.Instance.transform.position.y > transform.position.y)
        {
            SlashEffectAtAngle(slashEffect, 80, UpAttackTransform);
        }
        else if (PlayerController.Instance.transform.position.y < transform.position.y)
        {
            SlashEffectAtAngle(slashEffect, -90, UpAttackTransform);
        }
    }

    void SlashEffectAtAngle(GameObject _slashEffect, int _effectAngle, Transform _attackTransform)
    {
        _slashEffect = Instantiate(_slashEffect, _attackTransform);
        _slashEffect.transform.eulerAngles = new Vector3(0, 0, _effectAngle);
        _slashEffect.transform.localScale = new Vector2(transform.localScale.x, transform.localScale.y);
    }

    IEnumerator Lunge()
    {
        Flip();
        attacking = true;

        anim.SetBool("Lunge", true);
        yield return new WaitForSeconds(1f);
        anim.SetBool("Lunge", false);
        damagedPlayer = false;
        ResetAllAttacks();
    }

    IEnumerator Parry()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        anim.SetBool("Parry", true);
        yield return new WaitForSeconds(0.8f);
        anim.SetBool("Parry", false);

        parrying = false;
        ResetAllAttacks();
    }

    IEnumerator Slash()
    {
        attacking = true;
        rb.velocity = Vector2.zero;

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.2f);
        anim.ResetTrigger("Slash");

        ResetAllAttacks();
    }

    #endregion
    #region Stage 2
    void DiveAttackJump()
    {
        attacking = true;
        moveToPosition = new Vector2(PlayerController.Instance.transform.position.x, rb.position.y + 10);
        diveAttack = true;
        anim.SetBool("Jump", true);
    }

    public void Dive()
    {
        anim.SetBool("Dive", true);
        anim.SetBool("Jump", false);
    }

    private void OnTriggerEnter2D(Collider2D _other)
    {
        if(_other.GetComponent<PlayerController>() != null && (diveAttack || bounceAttack))
        {
            _other.GetComponent<PlayerController>().TakeDamage(damage * 2);
            PlayerController.Instance.pState.recoilingX = true;
        }
    }

    public void DivingPillars()
    {
        Vector2 _impactPoint = groundCheckPoint.position;
        float _spawnDistance = 5;

        for(int i = 0; i < 10; i++)
        {
            Vector2 _pillarSpawnPointRight = _impactPoint + new Vector2(_spawnDistance, 0);
            Vector2 _pillarSpawnPointLeft = _impactPoint - new Vector2(_spawnDistance, 0);
            Instantiate(pillar, _pillarSpawnPointRight, Quaternion.Euler(0, 0, -90));
            Instantiate(pillar, _pillarSpawnPointLeft, Quaternion.Euler(0, 0, -90));

            _spawnDistance += 5;
        }
        ResetAllAttacks();
    }

    void BarrageBendDown()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        barrageAttack = true;
        anim.SetTrigger("BendDown");
    }

    public IEnumerator Barrage()
    {
        rb.velocity = Vector2.zero;

        float _currentAngle = 30f;
        for(int i = 0; i < 10; i++)
        {
            GameObject _projectile = Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, _currentAngle));

            if (facingRight)
            {
                _projectile.transform.eulerAngles = new Vector3(_projectile.transform.eulerAngles.x, 0, _currentAngle);
            }
            else
            {
                _projectile.transform.eulerAngles = new Vector3(_projectile.transform.eulerAngles.x, 180, _currentAngle);
            }

            _currentAngle += 5f;

            yield return new WaitForSeconds(0.3f);
        }
        yield return new WaitForSeconds(0.1f);
        anim.SetBool("Cast", false);
        ResetAllAttacks();
    }

    #endregion
    #region Stage 3
    void OutbreakBendDown()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        moveToPosition = new Vector2(transform.position.x, rb.position.y + 5);
        outbreakAttack = true;
        anim.SetTrigger("BendDown");
    }

    public IEnumerator Outbreak()
    {
        yield return new WaitForSeconds(1f);
        anim.SetBool("Cast", true);

        rb.velocity = Vector2.zero;
        for(int i = 0; i < 30; i++)
        {
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(110, 130))); //downwards
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(50, 70))); //diagonally right
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(260, 280))); //diagonally left

            yield return new WaitForSeconds(0.2f);
        }
        yield return new WaitForSeconds(0.1f);
        rb.constraints = RigidbodyConstraints2D.None;
        rb.constraints = RigidbodyConstraints2D.FreezeRotation;
        rb.velocity = new Vector2(rb.velocity.x, -10);
        yield return new WaitForSeconds(0.1f);
        anim.SetBool("Cast", false);
        ResetAllAttacks();
    }

    void BounceAttack()
    {
        attacking = true;
        bounceCount = Random.Range(2, 5);
        BounceBendDown();
    }
    int _bounces = 0;
    public void CheckBounce()
    {
        if(_bounces <  bounceCount - 1)
        {
            _bounces++;
            BounceBendDown();
        }
        else
        {
            _bounces = 0;
            anim.Play("Boss_Run");
        }
    }

    public void BounceBendDown()
    {
        rb.velocity = Vector2.zero;
        moveToPosition = new Vector2(PlayerController.Instance.transform.position.x, rb.position.y + 10);
        bounceAttack = true;
        anim.SetTrigger("BendDown");
    }

    public void CalculateTargetAngle()
    {
        Vector3 _directionToTarget = (PlayerController.Instance.transform.position - transform.position).normalized;

        float _angleOfTarget = Mathf.Atan2(_directionToTarget.y, _directionToTarget.x) * Mathf.Rad2Deg;
        rotationDirectionToTarget = _angleOfTarget;
    }

    #endregion
    #endregion

    public override void EnemyGetsHit(float _damageDone, Vector2 _hitDirection, float _hitForce)
    {
        if (!stunned)
        {
            if (!parrying)
            {
                if (canStun)
                {
                    hitCounter++;
                    if(hitCounter >= 3)
                    {
                        ResetAllAttacks();
                        StartCoroutine(Stunned());
                    }
                }
                base.EnemyGetsHit(_damageDone, _hitDirection, _hitForce);

                if (currentEnemyState != EnemyStates.THK_Stage4)
                {
                    ResetAllAttacks(); //cancel any current attack to avoid bugs
                    StartCoroutine(Parry());
                }

            }
            else
            {
                StopCoroutine(Parry());
                ResetAllAttacks();
                StartCoroutine(Slash()); //riposte
            }
        }
        else
        {
            StopCoroutine(Stunned());
            anim.SetBool("Stunned", false);
            stunned = false;
        }
        #region health to state
        if(health > 20)
        {
            ChangeState(EnemyStates.THK_Stage1);
        }
        if (health <= 15 && health < 10)
        {
            ChangeState(EnemyStates.THK_Stage2);
        }
        if (health <= 10 && health < 5)
        {
            ChangeState(EnemyStates.THK_Stage3);
        }
        if (health < 5)
        {
            ChangeState(EnemyStates.THK_Stage4);
        }
        if(health <= 0)
        {
            Death(0);
        }
        #endregion
    }

    public IEnumerator Stunned()
    {
        stunned = true;
        hitCounter = 0;
        anim.SetBool("Stunned", true);

        yield return new WaitForSeconds(6f);
        anim.SetBool("Stunned", false);
        stunned = false;
    }

    protected override void Death(float _destroyTime)
    {
        ResetAllAttacks();
        alive = false;
        rb.velocity = new Vector2(rb.velocity.x, -25);
        anim.SetTrigger("Die");
        bloodTimer = 0.8f;
    }

    public void DestroyAfterDeath()
    {
        Destroy(gameObject);
    }
}</code>

[Joseph Tang]

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TheHollowKnight.cs public void ResetAllAttacks()

Add a code: if (parrying) return; at the start

[Elvin Sim]

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View post on imgur.com

[Elvin Sim]

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<code>public override void EnemyGetsHit(float _damageDone, Vector2 _hitDirection, float _hitForce)
{
    if (!stunned)
    {
        if (!parrying)
        {
            if (canStun)
            {
                hitCounter++;
                if(hitCounter >= 3)
                {
                    ResetAllAttacks();
                    StartCoroutine(Stunned());
                }
            }
            base.EnemyGetsHit(_damageDone, _hitDirection, _hitForce);

            if (currentEnemyState != EnemyStates.THK_Stage4)
            {
                ResetAllAttacks(); //cancel any current attack to avoid bugs
                StartCoroutine(Parry());
            }

        }
        else
        {
            StopCoroutine(Parry());
            ResetAllAttacks();
            StartCoroutine(Slash()); //riposte
        }
    }
    else
    {
        StopCoroutine(Stunned());
        anim.SetBool("Stunned", false);
        stunned = false;
    }
    #region health to state
    if(health > 20)
    {
        ChangeState(EnemyStates.THK_Stage1);
    }
    if (health <= 15 && health < 10)
    {
        ChangeState(EnemyStates.THK_Stage2);
    }
    if (health <= 10 && health < 5)
    {
        ChangeState(EnemyStates.THK_Stage3);
    }
    if (health < 5)
    {
        ChangeState(EnemyStates.THK_Stage4);
    }
    if(health <= 0)
    {
        Death(0);
    }
    #endregion
}

public IEnumerator Stunned()
{
    stunned = true;
    hitCounter = 0;
    anim.SetBool("Stunned", true);

    yield return new WaitForSeconds(6f);
    anim.SetBool("Stunned", false);
    stunned = false;
}</code>

[Elvin Sim]

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DO you think is the Enemy Gets Hit and Stunned have bugs?

[Joseph Tang]

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What’s likely happening is that your enemy is getting hit multiple times from one attack.

My theory is that when attacked, your Boss’ EnemyGetsHit method is calling it’s if statement when not parrying to cast Parry. Then instantly thinking its getting attacked again to call the else statement to cancel Parry since its parrying, and cast Slash.

Perhaps find out if your Boss has multiple colliders that get hit by your player? If so then use the code from either of these:

[Part 3] Multiple colliders on Enemy causing multiple hits

[Part 3] Enemies with multiple colliders get hit multiple times

Otherwise, set up some print codes to check for what is firing mutliple times or not firing from EnemyGetsHit. It could also be that your Boss Parrying bool is set to true constantly for some reason.

[Elvin Sim]

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When The Boss health is 21, it will become invincible

View post on imgur.com

[Elvin Sim]

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now I test change the health but randomly it will also cause the boss invincible

[Elvin Sim]

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<code>public class TheHollowKnight : Enemy
{
    public static TheHollowKnight Instance;

    [SerializeField] GameObject slashEffect;
    public Transform SideAttackTransform; 
    public Vector2 SideAttackArea;

    public Transform UpAttackTransform;
    public Vector2 UpAttackArea;

    public Transform DownAttackTransform;
    public Vector2 DownAttackArea;

    public float attackRange;
    public float attackTimer;

    [HideInInspector] public bool facingRight;

    [Header("Ground Check Settings:")]
    [SerializeField] public Transform groundCheckPoint;
    [SerializeField] private float groundCheckY = 0.2f;
    [SerializeField] private float groundCheckX = 0.5f;
    [SerializeField] private LayerMask whatIsGround;

    int hitCounter;
    bool stunned, canStun;
    bool alive;

    [HideInInspector] public float runSpeed;

    public GameObject impactParticle;

    private void Awake()
    {
        if(Instance != null && Instance != this)
        {
            Destroy(gameObject);
        }
        else
        {
            Instance = this;
        }
    }

    // Start is called before the first frame update
    protected override void Start()
    {
        base.Start();
        sr = GetComponentInChildren<SpriteRenderer>();
        anim = GetComponentInChildren<Animator>();
        ChangeState(EnemyStates.THK_Stage1);
        alive = true;
    }

    public bool Grounded()
    {
        if (Physics2D.Raycast(groundCheckPoint.position, Vector2.down, groundCheckY, whatIsGround)
            || Physics2D.Raycast(groundCheckPoint.position + new Vector3(groundCheckX, 0, 0), Vector2.down, groundCheckY, whatIsGround)
            || Physics2D.Raycast(groundCheckPoint.position + new Vector3(-groundCheckX, 0, 0), Vector2.down, groundCheckY, whatIsGround))
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    private void OnDrawGizmos()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawWireCube(SideAttackTransform.position, SideAttackArea);
        Gizmos.DrawWireCube(UpAttackTransform.position, UpAttackArea);
        Gizmos.DrawWireCube(DownAttackTransform.position, DownAttackArea);
    }

    float bloodCountdown;
    float bloodTimer;

    // Update is called once per frame
    protected override void Update()
    {
        base.Update();

        if(health <= 0 && alive)
        {
            Death(0);
        }

        if (!attacking)
        {
            attackCountdown -= Time.deltaTime;
        }

        if (stunned)
        {
            rb.velocity = Vector2.zero;
        }

        bloodCountdown -= Time.deltaTime;
        if(bloodCountdown <= 0 && (currentEnemyState != EnemyStates.THK_Stage1 && currentEnemyState != EnemyStates.THK_Stage2))
        {
            GameObject _orangeBlood = Instantiate(orangeBlood, groundCheckPoint.position, Quaternion.identity);
            Destroy(_orangeBlood, 4f);
            bloodCountdown = bloodTimer;
        }
    }

    public void Flip()
    {
        if(PlayerController.Instance.transform.position.x < transform.position.x && transform.localScale.x > 0)
        {
            transform.eulerAngles = new Vector2(transform.eulerAngles.x, 180);
            facingRight = false;
        }
        else
        {
            transform.eulerAngles = new Vector2(transform.eulerAngles.x, 0);
            facingRight = true;
        }
    }

    protected override void UpdateEnemyState()
    {
        if(PlayerController.Instance != null)
        {
            switch (GetCurrentEnemyState)
            {
                case EnemyStates.THK_Stage1:
                    canStun = true;
                    attackTimer = 5;
                    runSpeed = speed;
                    break;

                case EnemyStates.THK_Stage2:
                    canStun = true;
                    attackTimer = 4;
                    break;

                case EnemyStates.THK_Stage3:
                    canStun = false;
                    attackTimer = 7;
                    bloodTimer = 5f;
                    break;

                case EnemyStates.THK_Stage4:
                    canStun = false;
                    attackTimer = 8;
                    runSpeed = speed / 2;
                    bloodTimer = 1.5f;
                    break;
            }
        }
    }

    protected override void OnCollisionStay2D(Collision2D _other)
    {

    }

    #region attacking
    #region variables
    [HideInInspector] public bool attacking;
    [HideInInspector] public float attackCountdown;
    [HideInInspector] public bool damagedPlayer = false;
    [HideInInspector] public bool parrying;

    [HideInInspector] public Vector2 moveToPosition;
    [HideInInspector] public bool diveAttack;
    public GameObject divingCollider;
    public GameObject pillar;

    [HideInInspector] public bool barrageAttack;
    public GameObject barrageFireball;
    [HideInInspector] public bool outbreakAttack;

    [HideInInspector] public bool bounceAttack;
    [HideInInspector] public float rotationDirectionToTarget;
    [HideInInspector] public int bounceCount;

    #endregion

    #region Control

    public void AttackHandler()
    {
        if(currentEnemyState == EnemyStates.THK_Stage1)
        {
            if(Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(TripleSlash());
            }
            else
            {
                StartCoroutine(Lunge()); 
            }
        }

        if (currentEnemyState == EnemyStates.THK_Stage2)
        {
            if (Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(TripleSlash());
            }
            else
            {
                int _attackChosen = Random.Range(1, 4);
                if(_attackChosen == 1)
                {
                    StartCoroutine(Lunge());
                }
                if(_attackChosen == 2)
                {
                    DiveAttackJump();
                }
                if(_attackChosen == 3)
                {
                    BarrageBendDown();
                }
                if(_attackChosen == 4)
                {
                    DivingPillars();
                }
            }
        }

        if (currentEnemyState == EnemyStates.THK_Stage3)
        {
            int _attackChosen = Random.Range(1, 4);
            if (_attackChosen == 1)
            {
                OutbreakBendDown();
            }
            if (_attackChosen == 2)
            {
                DiveAttackJump();
            }
            if (_attackChosen == 3)
            {
                BarrageBendDown();
            }
            if(_attackChosen == 4)
            {
                BounceAttack();
            }

        }

        if (currentEnemyState == EnemyStates.THK_Stage4)
        {
            if (Vector2.Distance(PlayerController.Instance.transform.position, rb.position) <= attackRange)
            {
                StartCoroutine(Slash());
            }
            else
            {
                BounceAttack();
            }
        }
    }

    public void ResetAllAttacks()
    {
        if (parrying) return;

        attacking = false;

        StopCoroutine(TripleSlash());
        StopCoroutine(Lunge());
        StopCoroutine(Parry());
        StopCoroutine(Slash());

        diveAttack = false;
        barrageAttack = false;
        outbreakAttack = false;
        bounceAttack = false;
    }
    #endregion


    #region Stage 1
    IEnumerator TripleSlash()
    {
        attacking = true;
        rb.velocity = Vector2.zero;

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.3f);
        anim.ResetTrigger("Slash");

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.5f);
        anim.ResetTrigger("Slash");

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.2f);
        anim.ResetTrigger("Slash");

        ResetAllAttacks();
    }

    void SlashAngle()
    {
        if(PlayerController.Instance.transform.position.x > transform.position.x || PlayerController.Instance.transform.position.x < transform.position.x)
        {
            Instantiate(slashEffect, SideAttackTransform);
        }
        else if (PlayerController.Instance.transform.position.y > transform.position.y)
        {
            SlashEffectAtAngle(slashEffect, 80, UpAttackTransform);
        }
        else if (PlayerController.Instance.transform.position.y < transform.position.y)
        {
            SlashEffectAtAngle(slashEffect, -90, UpAttackTransform);
        }
    }

    void SlashEffectAtAngle(GameObject _slashEffect, int _effectAngle, Transform _attackTransform)
    {
        _slashEffect = Instantiate(_slashEffect, _attackTransform);
        _slashEffect.transform.eulerAngles = new Vector3(0, 0, _effectAngle);
        _slashEffect.transform.localScale = new Vector2(transform.localScale.x, transform.localScale.y);
    }

    IEnumerator Lunge()
    {
        Flip();
        attacking = true;

        anim.SetBool("Lunge", true);
        yield return new WaitForSeconds(1f);
        anim.SetBool("Lunge", false);
        damagedPlayer = false;
        ResetAllAttacks();
    }

    IEnumerator Parry()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        anim.SetBool("Parry", true);
        yield return new WaitForSeconds(0.8f);
        anim.SetBool("Parry", false);

        parrying = false;
        ResetAllAttacks();
    }

    IEnumerator Slash()
    {
        attacking = true;
        rb.velocity = Vector2.zero;

        anim.SetTrigger("Slash");
        SlashAngle();
        yield return new WaitForSeconds(0.2f);
        anim.ResetTrigger("Slash");

        ResetAllAttacks();
    }

    #endregion
    #region Stage 2
    void DiveAttackJump()
    {
        attacking = true;
        moveToPosition = new Vector2(PlayerController.Instance.transform.position.x, rb.position.y + 10);
        diveAttack = true;
        anim.SetBool("Jump", true);
    }

    public void Dive()
    {
        anim.SetBool("Dive", true);
        anim.SetBool("Jump", false);
    }

    private void OnTriggerEnter2D(Collider2D _other)
    {
        if(_other.GetComponent<PlayerController>() != null && (diveAttack || bounceAttack))
        {
            _other.GetComponent<PlayerController>().TakeDamage(damage * 2);
            PlayerController.Instance.pState.recoilingX = true;
        }
    }

    public void DivingPillars()
    {
        Vector2 _impactPoint = groundCheckPoint.position;
        float _spawnDistance = 5;

        for(int i = 0; i < 10; i++)
        {
            Vector2 _pillarSpawnPointRight = _impactPoint + new Vector2(_spawnDistance, 0);
            Vector2 _pillarSpawnPointLeft = _impactPoint - new Vector2(_spawnDistance, 0);
            Instantiate(pillar, _pillarSpawnPointRight, Quaternion.Euler(0, 0, -90));
            Instantiate(pillar, _pillarSpawnPointLeft, Quaternion.Euler(0, 0, -90));

            _spawnDistance += 5;
        }
        ResetAllAttacks();
    }

    void BarrageBendDown()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        barrageAttack = true;
        anim.SetTrigger("BendDown");
    }

    public IEnumerator Barrage()
    {
        rb.velocity = Vector2.zero;

        float _currentAngle = 30f;
        for(int i = 0; i < 10; i++)
        {
            GameObject _projectile = Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, _currentAngle));

            if (facingRight)
            {
                _projectile.transform.eulerAngles = new Vector3(_projectile.transform.eulerAngles.x, 0, _currentAngle);
            }
            else
            {
                _projectile.transform.eulerAngles = new Vector3(_projectile.transform.eulerAngles.x, 180, _currentAngle);
            }

            _currentAngle += 5f;

            yield return new WaitForSeconds(0.3f);
        }
        yield return new WaitForSeconds(0.1f);
        anim.SetBool("Cast", false);
        ResetAllAttacks();
    }

    #endregion
    #region Stage 3
    void OutbreakBendDown()
    {
        attacking = true;
        rb.velocity = Vector2.zero;
        moveToPosition = new Vector2(transform.position.x, rb.position.y + 5);
        outbreakAttack = true;
        anim.SetTrigger("BendDown");
    }

    public IEnumerator Outbreak()
    {
        yield return new WaitForSeconds(1f);
        anim.SetBool("Cast", true);

        rb.velocity = Vector2.zero;
        for(int i = 0; i < 30; i++)
        {
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(110, 130))); //downwards
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(50, 70))); //diagonally right
            Instantiate(barrageFireball, transform.position, Quaternion.Euler(0, 0, Random.Range(260, 280))); //diagonally left

            yield return new WaitForSeconds(0.2f);
        }
        yield return new WaitForSeconds(0.1f);
        rb.constraints = RigidbodyConstraints2D.None;
        rb.constraints = RigidbodyConstraints2D.FreezeRotation;
        rb.velocity = new Vector2(rb.velocity.x, -10);
        yield return new WaitForSeconds(0.1f);
        anim.SetBool("Cast", false);
        ResetAllAttacks();
    }

    void BounceAttack()
    {
        attacking = true;
        bounceCount = Random.Range(2, 5);
        BounceBendDown();
    }
    int _bounces = 0;
    public void CheckBounce()
    {
        if(_bounces <  bounceCount - 1)
        {
            _bounces++;
            BounceBendDown();
        }
        else
        {
            _bounces = 0;
            anim.Play("Boss_Run");
        }
    }

    public void BounceBendDown()
    {
        rb.velocity = Vector2.zero;
        moveToPosition = new Vector2(PlayerController.Instance.transform.position.x, rb.position.y + 10);
        bounceAttack = true;
        anim.SetTrigger("BendDown");
    }

    public void CalculateTargetAngle()
    {
        Vector3 _directionToTarget = (PlayerController.Instance.transform.position - transform.position).normalized;

        float _angleOfTarget = Mathf.Atan2(_directionToTarget.y, _directionToTarget.x) * Mathf.Rad2Deg;
        rotationDirectionToTarget = _angleOfTarget;
    }

    #endregion
    #endregion

    public override void EnemyGetsHit(float _damageDone, Vector2 _hitDirection, float _hitForce)
    {
        if (!stunned)
        {
            if (!parrying)
            {
                if (canStun)
                {
                    hitCounter++;
                    if(hitCounter >= 3)
                    {
                        ResetAllAttacks();
                        StartCoroutine(Stunned());
                    }
                }
                base.EnemyGetsHit(_damageDone, _hitDirection, _hitForce);

                if (currentEnemyState != EnemyStates.THK_Stage4)
                {
                    ResetAllAttacks(); //cancel any current attack to avoid bugs
                    StartCoroutine(Parry());
                }

            }
            else
            {
                StopCoroutine(Parry());
                ResetAllAttacks();
                StartCoroutine(Slash()); //riposte
            }
        }
        else
        {
            StopCoroutine(Stunned());
            anim.SetBool("Stunned", false);
            stunned = false;
        }
        #region health to state
        if(health > 20)
        {
            ChangeState(EnemyStates.THK_Stage1);
        }
        if (health <= 15 && health < 10)
        {
            ChangeState(EnemyStates.THK_Stage2);
        }
        if (health <= 10 && health < 5)
        {
            ChangeState(EnemyStates.THK_Stage3);
        }
        if (health < 5)
        {
            ChangeState(EnemyStates.THK_Stage4);
        }
        if(health <= 0)
        {
            Death(0);
        }
        #endregion
    }

    public IEnumerator Stunned()
    {
        stunned = true;
        hitCounter = 0;
        anim.SetBool("Stunned", true);

        yield return new WaitForSeconds(6f);
        anim.SetBool("Stunned", false);
        stunned = false;
    }

    protected override void Death(float _destroyTime)
    {
        ResetAllAttacks();
        alive = false;
        rb.velocity = new Vector2(rb.velocity.x, -25);
        anim.SetTrigger("Die");
        bloodTimer = 0.8f;
    }

    public void DestroyAfterDeath()
    {
        Destroy(gameObject);
    }
}</code>

[Elvin Sim]

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<code>public class THKEvents : MonoBehaviour
{
    void SlashDamagePlayer()
    {
        if (PlayerController.Instance.transform.position.x > transform.position.x || PlayerController.Instance.transform.position.x < transform.position.x)
        {
            Hit(TheHollowKnight.Instance.SideAttackTransform, TheHollowKnight.Instance.SideAttackArea);
        }
        else if (PlayerController.Instance.transform.position.y > transform.position.y)
        {
            Hit(TheHollowKnight.Instance.UpAttackTransform, TheHollowKnight.Instance.UpAttackArea);
        }
        else if (PlayerController.Instance.transform.position.y < transform.position.y)
        {
            Hit(TheHollowKnight.Instance.DownAttackTransform, TheHollowKnight.Instance.DownAttackArea);
        }
    }

    void Hit(Transform _attackTransform, Vector2 _attackArea)
    {
        Collider2D[] _objectsToHit = Physics2D.OverlapBoxAll(_attackTransform.position, _attackArea, 0);
        for(int i = 0; i < _objectsToHit.Length; i++)
        {
            if (_objectsToHit[i].GetComponent<PlayerController>() != null)
            {
                _objectsToHit[i].GetComponent<PlayerController>().TakeDamage(TheHollowKnight.Instance.damage);
            }
        }
    }

    void Parrying()
    {
        TheHollowKnight.Instance.parrying = true;
    }

    void BendDownCheck()
    {
        if (TheHollowKnight.Instance.barrageAttack)
        {
            StartCoroutine(BarrageAttackTransition());
        }

        if (TheHollowKnight.Instance.outbreakAttack)
        {
            StartCoroutine(OutbreakAttackTransition());
        }

        if (TheHollowKnight.Instance.bounceAttack)
        {
            TheHollowKnight.Instance.anim.SetTrigger("Bounce1");
        }
    }

    void BarrageOrOutbreak()
    {
        if (TheHollowKnight.Instance.barrageAttack)
        {
            TheHollowKnight.Instance.StartCoroutine(TheHollowKnight.Instance.Barrage());
        }

        if (TheHollowKnight.Instance.outbreakAttack)
        {
            TheHollowKnight.Instance.StartCoroutine(TheHollowKnight.Instance.Outbreak());
        }
    }

    IEnumerator BarrageAttackTransition()
    {
        yield return new WaitForSeconds(1f);
        TheHollowKnight.Instance.anim.SetBool("Cast", true);
    }

    IEnumerator OutbreakAttackTransition()
    {
        yield return new WaitForSeconds(1f);
        TheHollowKnight.Instance.anim.SetBool("Cast", true);
    }

    void DestroyAfterDeath()
    {
        SpawnBoss.Instance.IsNotTrigger();
        TheHollowKnight.Instance.DestroyAfterDeath();
    }
}</code>

[Elvin Sim]

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<code>public class Enemy : MonoBehaviour
{
    [SerializeField] protected float health;
    [SerializeField] protected float recoilLength;
    [SerializeField] protected float recoilFactor;
    [SerializeField] protected bool isRecoiling = false;

    [SerializeField] public float speed;

    [SerializeField] public float damage;
    [SerializeField] protected GameObject orangeBlood;

    [SerializeField] AudioClip hurtSound;

    protected float recoilTimer;
    [HideInInspector] public Rigidbody2D rb;
    protected SpriteRenderer sr;
    public Animator anim;
    protected AudioSource audioSource;

    protected enum EnemyStates
    {
        //Crawler
        Crawler_Idle,
        Crawler_Flip,

        //Bat
        Bat_Idle,
        Bat_Chase,
        Bat_Stunned,
        Bat_Death,

        //Charger
        Charger_Idle,
        Charger_Suprised,
        Charger_Charge,

        //Shade
        Shade_Idle,
        Shade_Chase,
        Shade_Stunned,
        Shade_Death,

        //THK
        THK_Stage1,
        THK_Stage2,
        THK_Stage3,
        THK_Stage4
    }
    protected EnemyStates currentEnemyState;

    protected virtual EnemyStates GetCurrentEnemyState
    {
        get { return currentEnemyState; }
        set
        {
            if (currentEnemyState != value)
            {
                currentEnemyState = value;

                ChangeCurrentAnimation();
            }
        }
    }

    // Start is called before the first frame update
    protected virtual void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        sr = GetComponent<SpriteRenderer>();
        anim = GetComponent<Animator>();
        audioSource = GetComponent<AudioSource>();
    }

    // Update is called once per frame
    protected virtual void Update()
    {
        if (GameManager.Instance.gameIsPaused) return;

        if(isRecoiling)
        {
            if(recoilTimer < recoilLength)
            {
                recoilTimer += Time.deltaTime;
            }
            else
            {
                isRecoiling = false;
                recoilTimer = 0;
            }
        }
        else
        {
            UpdateEnemyState();
        }
    }

    public virtual void EnemyGetsHit(float _damageDone, Vector2 _hitDirection, float _hitForce)
    {
        health -= _damageDone;
        if (!isRecoiling)
        {
            audioSource.PlayOneShot(hurtSound);
            GameObject _orangeBlood = Instantiate(orangeBlood, transform.position, Quaternion.identity);
            Destroy(_orangeBlood, 5.5f);
            rb.velocity = _hitForce * recoilFactor * _hitDirection;
        }
    }
    protected virtual void OnCollisionStay2D(Collision2D _other)
    {
        if (_other.gameObject.CompareTag("Player") && !PlayerController.Instance.pState.invincible && health > 0)
        {
            Attack();
            if(PlayerController.Instance.pState.alive)
            {
                PlayerController.Instance.HitStopTime(0, 5, 0.5f);
            }
        }
    }

    protected virtual void Death(float _destroyTime)
    {
        Destroy(gameObject, _destroyTime);
    }

    protected virtual void UpdateEnemyState() { }
    protected virtual void ChangeCurrentAnimation() { }

    protected void ChangeState(EnemyStates _newState)
    {
        GetCurrentEnemyState = _newState;
    }

    protected virtual void Attack()
    {
        PlayerController.Instance.TakeDamage(damage);
    }
}</code>

[Elvin Sim]

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The Slash always Trigger if you see the animator

View post on imgur.com

[Elvin Sim]

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View post on imgur.com

[Elvin Sim]

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You can see the SlashAngle() and others related to the Slash

[Elvin Sim]

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I am so sorry for bother you all, because I try as much as I could but still cannot find the solution

[Joseph Tang]

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While testing the bug, can you show the rest of the Boss’ inspector? Particularly the bools.

Also, at 21 health, the boss shouldn’t be changing states as it should not have crossed the threshold to do so and to be stunned.

While in your else statement for EnemyGetsHit(), change the following code:

            else
            {
                StopCoroutine(Parry());
                parrying = false;
                ResetAllAttacks();
                StartCoroutine(Slash());  //riposte
            }

[Elvin Sim]

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Thank you it fix now!!!

[Author]

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