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Game Freeze when Dashed to Enemy

Home Forums Video Game Tutorial Series Creating a Metroidvania in Unity Game Freeze when Dashed to Enemy

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  • #16686
    shiriko Kataure
    Level 1
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    As what the title said, it only fix when stop the game

    
    using System;
    using System.Collections.Generic;
    using System.Collections;
    using Unity.VisualScripting;
    using UnityEngine;
    using UnityEngine.UI;
    
    public class PlayerController : MonoBehaviour
    {
        // Start is called once before the first execution of Update after the MonoBehaviour is created
    
        [Header("Horizontal Movement Settings")]
        [SerializeField] private float walkSpeed = 1;
        [Space(5)]
    
        [Header("Vertical Movement Settings")]
        [SerializeField] private float jumpForce = 45;
        private int jumpBufferCounter = 0;
        [SerializeField] private int jumpBufferFrames;
        private float coyoteTimeCounter = 0;
        [SerializeField] private float coyoteTime;
        private int airJumpCounter = 0;
        [SerializeField] private int maxAirJumps;
        [Space(5)]
    
        [Header("Ground Check Settings")]
        [SerializeField] private Transform groundCheckPoint;
        [SerializeField] private float groundCheckY = 0.2f;
        [SerializeField] private float groundCheckX = 0.5f;
        [SerializeField] private LayerMask whatIsGround;
        [Space(5)]
    
        [Header("Dash Settings")]
        [SerializeField] private float dashSpeed;
        [SerializeField] private float dashTime;
        [SerializeField] private float dashCooldown;
        [SerializeField] GameObject dashEffect;
        [Space(5)]
    
        [Header("Attacking")]
        bool attack = false;
        [SerializeField]private float timeBetweenAttack;
        private float timeSinceAttack;
        [SerializeField] Transform SideAttackTransform, UpAttackTransform, DownAttackTransform;
        [SerializeField] Vector2 SideAttackArea, UpAttackArea, DownAttackArea;
        [SerializeField] LayerMask attackableLayer;
        [SerializeField] float damage;
        [SerializeField] GameObject slashEffect;
    
        bool restoreTime;
        float restoreTimeSpeed;
        [Space(5)]
    
        [Header("Recoil")]
        [SerializeField]  int recoilXSteps = 5; //how many FixedUpdates() the player recoils horizontally for
        [SerializeField]  int recoilYSteps = 5;
        [SerializeField] float recoilXSpeed = 100; //the speed of horizontal recoil
        [SerializeField] float recoilYSpeed = 100; //the speed of vertical recoil
        int stepsXRecoiled, stepsYRecoiled;
        [Space(5)]
    
        [Header("Health Settings")]
        public int health;
        public int maxHealth;
        [SerializeField] GameObject bloodSpurt;
        [SerializeField] float hitFlashSpeed;
        public delegate void OnHealthChangedDelegate();
        [HideInInspector] public OnHealthChangedDelegate onHealthChangedCallback;
    
        float healTimer;
        [SerializeField] float timeToHeal;
        [Space(5)]
    
        [Header("Mana Settings")]
        [SerializeField] UnityEngine.UI.Image manaStorage;
    
        [SerializeField] float mana;
        [SerializeField] float manaDrainSpeed;
        [SerializeField] float manaGain;
        [Space(5)]
    
        [Header("Spell Settings")]
        //spell stats
        [SerializeField] float manaSpellCost = 0.3f;
        [SerializeField] float timeBetweenCast = 0.5f;
        float timeSinceCast;
        [SerializeField] float spellDamage; //upspellexplosion and downspellfireball
        [SerializeField] float downSpellForce; // desolate dive only
        //spell cast objects
        [SerializeField] GameObject sideSpellFireball;
        [SerializeField] GameObject upSpellExplosion;
        [SerializeField] GameObject downSpellFireball;
        [Space(5)]
    
        [HideInInspector] public PlayerStateList pState;
        private Animator anim;
        private Rigidbody2D rb;
        private SpriteRenderer sr;
    
        private float xAxis, yAxis;
        private float gravity;
        private bool canDash;
        private bool dashed;
    
    
    
        public static PlayerController Instance;
    
        private void Awake()
        {
            if (Instance != null && Instance != this)
            { 
                Destroy(gameObject);
            }
            else
            {
                Instance = this;
            }
            DontDestroyOnLoad(gameObject);
        }
    
        void Start()
        {
    
            pState = GetComponent<PlayerStateList>();
            rb = GetComponent<Rigidbody2D>();
            sr = GetComponent<SpriteRenderer>();
            anim = GetComponent<Animator>();
            gravity = rb.gravityScale;
            canDash = true; // Ensure dash starts enabled
            Mana = mana;
            manaStorage.fillAmount = Mana;
            Health = maxHealth;
        }
    
        private void OnDrawGizmos()
        {
            Gizmos.color = Color.red;
            Gizmos.DrawWireCube(SideAttackTransform.position, SideAttackArea);
            Gizmos.DrawWireCube(UpAttackTransform.position, UpAttackArea);
            Gizmos.DrawWireCube(DownAttackTransform.position, DownAttackArea);
        }
    
        // Update is called once per frame
        void Update()
        {
            GetInput();
            UpdateJumpVariables();
    
            if (pState.dashing) return;
            RestoreTimeScale();
            FlashWhileInvincible();
            Move();
             Heal();
            CastSpell();
    
            if(pState.healing) return;
            Flip();
            Jump();
            StartDash();
            Attack();
            Recoil();
    
    
    
        }
        private void OnTriggerEnter2D(Collider2D _other) //for up and down cast spell
        {
            if (_other.GetComponent<Enemy>() != null && pState.casting)
            {
                _other.GetComponent<Enemy>().EnemyHit(spellDamage, (_other.transform.position - transform.position).normalized, -recoilYSpeed);
            }
        }
    
        private void FixedUpdate()
        {
            if (pState.dashing) return;
            Recoil();
        }
    
        void GetInput()
        {
            xAxis = Input.GetAxisRaw("Horizontal");
            yAxis = Input.GetAxisRaw("Vertical");
            attack = Input.GetButtonDown("Attack");
        }
    
        void Flip()
        {
            if(xAxis < 0)
            {
                transform.localScale = new Vector2(-1, transform.localScale.y);
                pState.lookingRight = false;
            }
            else if(xAxis > 0)
            {
                transform.localScale = new Vector2(1, transform.localScale.y);
                pState.lookingRight = true;
            }
        }
    
        private void Move()
        {
            if (pState.healing)
            {
                rb.linearVelocity = new Vector2(0, rb.linearVelocity.y); // Stop horizontal movement, keep vertical velocity (e.g., for jumping)
                return; // Early return to skip the rest of the movement code
            }
    
            // Normal movement code
            rb.linearVelocity = new Vector2(walkSpeed * xAxis, rb.linearVelocity.y);
            anim.SetBool("Walking", rb.linearVelocity.x != 0 && Grounded());
        }
    
        void StartDash()
        {
            if(Input.GetButtonDown("Dash") && canDash && !dashed)
            {
                StartCoroutine(Dash());
                dashed = true;
            }
    
            if (Grounded())
            {
                dashed = false;
    
            }
        }
    
        IEnumerator Dash()
        {
            canDash = false;
            pState.dashing = true;
            anim.SetTrigger("Dashing");
            rb.gravityScale = 0;
            int _dir = pState.lookingRight ? 1 : -1;
            rb.linearVelocity = new Vector2(_dir * dashSpeed, 0);
            if(Grounded()) Instantiate(dashEffect, transform);
            yield return new WaitForSeconds(dashTime);
            rb.gravityScale = gravity;
            pState.dashing = false;
            yield return new WaitForSeconds(dashCooldown);
            canDash = true;
        }
        void Attack()
        {
            timeSinceAttack += Time.deltaTime;
            if(attack && timeSinceAttack >= timeBetweenAttack)
            {
                timeSinceAttack = 0;
                anim.SetTrigger("Attacking");
    
                if(yAxis == 0 || yAxis < 0 && Grounded())
                {
                    Hit(SideAttackTransform, SideAttackArea, ref pState.recoilingX, recoilXSpeed);
                    Instantiate(slashEffect, SideAttackTransform);
                }
                else if(yAxis > 0)
                {
                    Hit(UpAttackTransform, UpAttackArea, ref pState.recoilingY, recoilYSpeed);
                    SlashEffectAtAngle(slashEffect, 80, UpAttackTransform);
                }
                else if (yAxis < 0 && !Grounded())
                {
                    Hit(DownAttackTransform, DownAttackArea, ref pState.recoilingY, recoilYSpeed);
                    SlashEffectAtAngle(slashEffect, -90, DownAttackTransform);
                }
            }
        }
        private void Hit(Transform _attackTransform, Vector2 _attackArea, ref bool _recoilDir, float _recoilStrength)
        {
            Collider2D[] objectsToHit = Physics2D.OverlapBoxAll(_attackTransform.position, _attackArea, 0, attackableLayer);
    
            if (objectsToHit.Length > 0)
            {
                _recoilDir = true;
            }
            for (int i = 0; i < objectsToHit.Length; i++)
            {
                if (objectsToHit[i].GetComponent<Enemy>() != null)
                {
                    objectsToHit[i].GetComponent<Enemy>().EnemyHit
                        (damage, (transform.position - objectsToHit[i].transform.position).normalized, _recoilStrength);
    
                    if (objectsToHit[i].CompareTag("Enemy"))
                    {
                        Mana += manaGain;
                    }
                }
            }
        } 
        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);
        }
        void Recoil()
        {
            if (pState.recoilingX)
            {
                if (pState.lookingRight)
                {
                    rb.linearVelocity = new Vector2(-recoilXSpeed, 0);
                }
                else
                {
                    rb.linearVelocity = new Vector2(recoilXSpeed, 0);
                }
            }
    
            if (pState.recoilingY)
            {
                rb.gravityScale = 0;
                if (yAxis < 0)
                {
                    rb.linearVelocity = new Vector2(rb.linearVelocity.x, recoilYSpeed);
                }
                else
                {
                    rb.linearVelocity = new Vector2(rb.linearVelocity.x, -recoilYSpeed);
                }
                airJumpCounter = 0;
            }
            else
            {
                rb.gravityScale = gravity;
            }
    
    
            //stop recoil
            if(pState.recoilingX && stepsXRecoiled < recoilXSteps)
            {
                stepsXRecoiled++;
            }
            else
            {
                StopRecoilX();
            }
            if (pState.recoilingY && stepsYRecoiled < recoilYSteps)
            {
                stepsYRecoiled++;
            }
            else
            {
                StopRecoilY();
            }
    
            if (Grounded())
            {
                StopRecoilY();
            }
        } 
        void StopRecoilX()
        {
            stepsXRecoiled = 0;
            pState.recoilingX = false;
        }
        void StopRecoilY()
        {
            stepsYRecoiled = 0;
            pState.recoilingY = false;
        }
    
        public void TakeDamage(float _damage)
        {
            Health -= Mathf.RoundToInt(_damage);
            StartCoroutine(StopTakingDamage());
        }
    
        IEnumerator StopTakingDamage()
        {
            pState.invincible = true;
            GameObject _bloodSpurtParticles = Instantiate(bloodSpurt, transform.position, Quaternion.identity);
            Destroy(_bloodSpurtParticles, 1.5f);
            anim.SetTrigger("TakeDamage");
    
            yield return new WaitForSeconds(1f);
            pState.invincible = false;
        }
        void FlashWhileInvincible()
        {
            sr.material.color = pState.invincible ? 
                Color.Lerp(Color.white, Color.black, Mathf.PingPong(Time.time * hitFlashSpeed, 1.0f)) : Color.white;
        }
    
        void RestoreTimeScale()
        {
            if (restoreTime)
            {
                if (Time.timeScale < 1)
                {
                    Time.timeScale += Time.unscaledDeltaTime * restoreTimeSpeed;
                }
                else
                {
                    Time.timeScale = 1;
                    restoreTime = false;
                }
            }
        }
        public void HitStopTime(float _newTimeScale, int _restoreSpeed, float _delay)
        {
            restoreTimeSpeed = _restoreSpeed;
            Time.timeScale = _newTimeScale;
    
            if (_delay > 0)
            {
                StopCoroutine(StartTimeAgain(_delay));
                StartCoroutine(StartTimeAgain(_delay));
            }
            else
            {
                restoreTime = true;
            }
        }
        IEnumerator StartTimeAgain(float _delay)
        {
            yield return new WaitForSecondsRealtime(_delay);
            restoreTime = true;
        }
    
        public int Health
        {
            get { return health; }
            set
            {
                if (health != value)
                {
                    health = Mathf.Clamp(value, 0, maxHealth);
    
                    if (onHealthChangedCallback != null)
                    {
                        onHealthChangedCallback.Invoke();
                    }
                }
            }
        }
        void Heal()
        {
            if(Input.GetButton("Healing") && Health < maxHealth && Mana > 0 && !pState.jumping && !pState.dashing)
            {
                pState.healing = true;
                anim.SetBool("Healing", true);
    
                //healing
                healTimer += Time.deltaTime;
                if(healTimer >= timeToHeal)
                {
                    Health++;
                    healTimer = 0;
                }
    
                //drain mana
                Mana -= Time.deltaTime * manaDrainSpeed;
            }
            else
            {
                pState.healing = false;
                anim.SetBool("Healing", false);
                healTimer = 0;
            }
        }
        float Mana
        {
            get { return mana; }
            set
            {
                //if mana stats change
                if (mana != value)
                {
                    mana = Mathf.Clamp(value, 0, 1);
                    manaStorage.fillAmount = Mana;
                }
            }
        }
        void CastSpell()
        {
            if (Input.GetButtonDown("CastSpell") && timeSinceCast >= timeBetweenCast && Mana >= manaSpellCost)
            {
                pState.casting = true;
                timeSinceCast = 0;
                StartCoroutine(CastCoroutine());
            }
            else
            {
                timeSinceCast += Time.deltaTime;
            }
    
            if (Grounded())
            {
                //disable downspell if on the ground
                downSpellFireball.SetActive(false);
            }
            //if down spell is active, force player down until grounded
            if (downSpellFireball.activeInHierarchy)
            {
                rb.linearVelocity += downSpellForce * Vector2.down;
            }
        }
        IEnumerator CastCoroutine()
        {
            anim.SetBool("Casting", true);
            yield return new WaitForSeconds(0.15f);
    
            //side cast
            if (yAxis == 0 || (yAxis < 0 && Grounded()))
            {
                GameObject _fireBall = Instantiate(sideSpellFireball, SideAttackTransform.position, Quaternion.identity);
    
                //flip fireball
                if (pState.lookingRight)
                {
                    _fireBall.transform.eulerAngles = Vector3.zero; // if facing right, fireball continues as per normal
                }
                else
                {
                    _fireBall.transform.eulerAngles = new Vector2(_fireBall.transform.eulerAngles.x, 180);
                    //if not facing right, rotate the fireball 180 deg
                }
                pState.recoilingX = true;
            }
    
            //up cast
            else if (yAxis > 0)
            {
                Instantiate(upSpellExplosion, transform);
                rb.linearVelocity = Vector2.zero;
            }
    
            //down cast
            else if (yAxis < 0 && !Grounded())
            {
                downSpellFireball.SetActive(true);
            }
    
            Mana -= manaSpellCost;
            yield return new WaitForSeconds(0.35f);
            anim.SetBool("Casting", false);
            pState.casting = false;
        }
    
        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;
            } 
        }
    
        void Jump()
        {
            if (Input.GetButtonUp("Jump") && rb.linearVelocity.y > 0)
            {
                rb.linearVelocity = new Vector2(rb.linearVelocity.x, 0);
    
                pState.jumping = false;
            }
    
            if (!pState.jumping)
            {
                if (jumpBufferCounter > 0 && coyoteTimeCounter > 0)
                {
                    rb.linearVelocity = new Vector3(rb.linearVelocity.x, jumpForce);
    
                    pState.jumping = true;
                }
                else if (!Grounded() && airJumpCounter < maxAirJumps && Input.GetButtonDown("Jump"))
                {
                    pState.jumping = true;
    
                    airJumpCounter++;
    
                    rb.linearVelocity = new Vector3(rb.linearVelocity.x, jumpForce);
                }
            }
    
            anim.SetBool("Jumping", !Grounded ());
        }
    
        void UpdateJumpVariables()
        {
            if (Grounded())
            {
                pState.jumping = false;
                coyoteTimeCounter = coyoteTime;
                airJumpCounter = 0;
            }
            else
            {
                coyoteTimeCounter -= Time.deltaTime;
            }
    
            if (Input.GetButtonDown("Jump"))
            {
                jumpBufferCounter = jumpBufferFrames;
            }
            else
            {
                jumpBufferCounter--;
            }
        }
    }
    
    #16698
    Terence
    Level 30
    Keymaster
    Helpful?
    Up
    0
    ::

    To fix your issue, we need to find out which line in your Dash() function is causing the game to freeze. To start, you can comment out everything in your Dash() function and try to dash again.

        IEnumerator Dash()
        {
            /*canDash = false;
            pState.dashing = true;
            anim.SetTrigger("Dashing");
            rb.gravityScale = 0;
            int _dir = pState.lookingRight ? 1 : -1;
            rb.linearVelocity = new Vector2(_dir * dashSpeed, 0);
            if(Grounded()) Instantiate(dashEffect, transform);
            yield return new WaitForSeconds(dashTime);
            rb.gravityScale = gravity;
            pState.dashing = false;
            yield return new WaitForSeconds(dashCooldown);
            canDash = true;*/
        }

    May I know which part of the tutorial you are at as well?

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