0708 오브젝트 풀링

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

public class BullrtControler : MonoBehaviour
{
    public float speed = 1f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        var movement = new Vector3(0, 1, 0)/*vector3.up*/ * this.speed * Time.deltaTime;
        //this.transform.Translate(0, 1 * this.speed * Time.deltaTime, 0) ;
        this.transform.Translate(movement);
        if(this.transform.position.y > 5.5f)
        {
            //Destroy(this.gameObject);
            this.gameObject.SetActive(false);
        }
    }
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.tag == "enemy")
        {
            this.gameObject.SetActive(false);
        }
    }
}

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

public class ShipControler : MonoBehaviour
{
    [SerializeField]
    private GameObject bullet;
    private GameObject[] bullets;
    [SerializeField]
    private float speed = 1.0f;
    public UnityAction DieAction;
    public GameObject explosionGo;
    private int cnt = 0;
    // Start is called before the first frame update
    void Start()
    {
        this.bullets = new GameObject[100];
        for (int i = 0; i < 100; i++)
        {
            GameObject bullet = Instantiate(this.bullet);
            bullets[i] = bullet;
            bullet.SetActive(false);
        }
    }

    // Update is called once per frame
    void Update()
    {
        
        if (Input.GetKeyDown(KeyCode.F))
        {
            //var shot = Instantiate(this.bullet, this.transform.position + new Vector3(0, 0.66f, 0),Quaternion.identity);
            if (cnt == 100) cnt = 0;
            this.bullets[cnt].SetActive(true);
            this.bullets[cnt].transform.position = this.transform.position + new Vector3(0, 0.66f, 0);
            cnt++;
        }
        float getX = Input.GetAxisRaw("Horizontal");
        float getY = Input.GetAxisRaw("Vertical");
        var movement = new Vector3(getX, getY, 0);
        movement = movement.normalized * Time.deltaTime * this.speed;
        /*if (Input.GetKey(KeyCode.LeftArrow))
        {
            this.transform.position -= movement;
        }
        if (Input.GetKey(KeyCode.RightArrow))
        {
            this.transform.position += movement;
        }*/
        this.transform.Translate(movement);
    }
    public void Die()
    {
        this.DieAction();
        Destroy(this.gameObject);
    }
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag == "enemy")
        {
            Destroy(collision.gameObject);
            Instantiate(this.explosionGo, this.transform.position, Quaternion.identity);
            this.Die();
        }
    }
}

지금 ship은 100개의 비활성화된 bullet을 들고있고, 쏠때마다 하나씩 활성화시키고, bullet에 "적에게 닿거나" , "화면밖으로 날아갔을때" 비활성화 되도록 설정해놓는다.

 

시작하자마자 100개를 만들기때문에 메모리를 사용하게 되지만, 누를때마다 새 총알을 생성하고, 사라질때마다 destroy 시키는 방식에 비해서 컴퓨터의 부담이 훨씬 덜하게 된다.

좋다.