Project_WL/Assets/Script/Character/Projectile/Projectile/ProjectileHitChecker.cs

using UnityEngine;

public class ProjectileHitChecker : MonoBehaviour
{
    public bool Off_OnlyThisObj_byHit = false;
    public bool NoDMG = false;

    ProjectileBase m_ProjectileBase;
    BoxCollider m_Collider;
    Vector3 ColiiderOriginalSize;
    bool setInit = false;

    private void Init()
    {
        if (setInit) return;
        setInit = true;

        m_Collider = GetComponent<BoxCollider>();
        ColiiderOriginalSize = m_Collider.size;
    }

    public void Set(ProjectileBase pb) { m_ProjectileBase = pb; }
    public void Set_Size(float addSize)
    {
        Init();
        m_Collider.size = ColiiderOriginalSize + Vector3.one * addSize;
    }
    public BoxCollider Get_Collider() { Init(); return m_Collider; }

    void OnTriggerEnter(Collider other) { ProcessCollider(other); }
    void OnCollisionEnter(Collision collision) { ProcessCollider(collision.collider); }
    private void OnParticleCollision(GameObject other)
    {
        ProcessCollider(other.GetComponent<Collider>());
    }
    private void ProcessCollider(Collider other)
    {
        if (m_ProjectileBase.ProcessCollider(other, !Off_OnlyThisObj_byHit, NoDMG) && Off_OnlyThisObj_byHit)
            gameObject.SetActive(false);
    }
}