절대강좌 유니티 - 깡통 주변 폭파, 3대 맞으면 파괴, 이펙트,

 

RemoveBullet

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

public class RemoveBullet : MonoBehaviour
{
    [SerializeField]
    private GameObject sparkEffect;
    private void OnCollisionEnter(Collision collision)
    {
        Debug.Log(collision);

        //if(collision.collider.CompareTag("Bullet"))
        //{

        //}
        if(collision.collider.tag == "Bullet")
        {
            //스파크 파티클을 동적으로 생성
            //Instantiate(sparkEffect, collision.transform.position, Quaternion.identity);

            Debug.LogFormat("collision.contactCount: {0}", collision.contactCount);

            for(int i = 0; i < collision.contactCount; i++)
            {
                ContactPoint contactPoint = collision.GetContact(i);
                Debug.LogFormat("<color=cyan>=> {0}</color>", contactPoint.point);
            }

            //충돌지점의 법선벡터를 구하기 위함
            ContactPoint cp = collision.GetContact(0);
            DrawArrow.ForDebug(cp.point, -1 * cp.normal, 5f, Color.green, ArrowType.Solid);
            //벡터 뒤집기
            var rot = Quaternion.LookRotation(-1 * cp.normal);
            //Instantiate(this.sparkEffect, cp.point, rot);

            GameObject spark = Instantiate(this.sparkEffect, cp.point, rot);
            Destroy(spark, 1f);
            Destroy(collision.gameObject);
        }
    }
}

 

BarrelController

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

public class BarrelController : MonoBehaviour
{
    private int hitCount = 0;
    [SerializeField]
    private GameObject expEffect; //프리팹
    private Rigidbody rBody;
    [SerializeField]
    private Texture[] textures;

    private new MeshRenderer renderer; // new를 안쓰면 부모가 이미 쓰고있다.
    private void Start()
    {
        this.rBody = this.GetComponent<Rigidbody>();

        int idx = Random.Range(0, this.textures.Length); // 0, 1, 2

        this.renderer = this.gameObject.GetComponentInChildren<MeshRenderer>();
        this.renderer.material.mainTexture = this.textures[idx];
    }
    private void OnCollisionEnter(Collision collision)
    {
        if(collision.collider.CompareTag("Bullet"))
        {
            //횟수를 증가
            this.hitCount++;
            Debug.LogFormat("{0}회 맞았다!", this.hitCount);
            if(this.hitCount >= 3)
            {
                this.ExpBarrel();
            }
        }
    }

    void ExpBarrel()
    {
        Debug.Log("폭파");
        //연출
        //동적으로 폭파 이펙트 생성하기
        GameObject exp = Instantiate(this.expEffect, this.transform.position, Quaternion.identity);
        Destroy(exp, 0.5f);
        //위로 힘줘서 날려버리기
        this.rBody.mass = 1f; //무게를 가볍게
        this.rBody.AddForce(Vector2.up * 1500f);

        //간접 폭발력 전달
        this.IndirectDamage(this.transform.position);

        //3초후 드럼통 제거
        Destroy(this.gameObject, 3.0f);
    }

    private void IndirectDamage(Vector3 position)
    {
        //주변에 있는 모든 드럼통을 추출한다.
        Collider[] colls = Physics.OverlapSphere(position, this.radius, 1 << 3); //레이어 3번을 의미
        foreach(Collider col in colls)
        {
            var rb = col.GetComponent<Rigidbody>();
            rb.mass = 1f;
            rb.constraints = RigidbodyConstraints.None;
            rb.AddExplosionForce(1500, position, 1200);
        }
    }

    [SerializeField]
    private float radius = 1f;
    private void OnDrawGizmos()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(this.transform.position, this.radius);
    }
}