使用

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

public class haha : PoolController
{
    GameObject ziji;
    // Use this for initialization
    void Start()
    {
        ziji = GameObject.Find("Capsule");//任意gameobject，我用的是胶囊体
    }
    // Update is called once per frame
    void Update()
    {
        
        if (Input.GetKeyDown(KeyCode.F))
        {
            StartCoroutine(biu());
        }
    }
    IEnumerator biu()
    {
        
        float timer = 0;
        GameObject o = Spawn("Bullet");
        o.transform.position = ziji.transform.position;
        o.GetComponent<Rigidbody>().AddForce(ziji.transform.forward.normalized * 200);
        while (timer < 3)
        {
            yield return new WaitForSeconds(1);
            timer += 1;            
        }      
        print(timer);
        
        //o.transform.Translate(transform.forward * 5 *Time.deltaTime);
        if (timer >= 3)
        {
            UnSpawn(o);
            timer = 0;
        }
        

    }
    
}