UnityAPI学习之协程原理与作用

协程的原理与作用

Unity 协程(Coroutine)原理与用法详解_unity coroutine-CSDN博客

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

public class NO14_coroutine : MonoBehaviour
{
    Animator animator;
    // Start is called before the first frame update
    void Start()
    {
        animator = transform.GetComponent<Animator>();
        //开启协程
        //StartCoroutine("Grisplay");
        IEnumerator ie = Grisplay();
        StartCoroutine(ie);
        //停止协程
        //StopCoroutine("Grisplay");
        StopCoroutine(ie);

        //StopAllCoroutines();
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    IEnumerator Grisplay()
    {
        //暂停几秒（协程挂起）
        yield return new WaitForSeconds(2);
        print("Run");
        animator.Play("Gris_Run");
        //等待一帧,与参数无关
        yield return null;
        yield return 10000;
        print("no!!!");
        //在帧末执行以下逻辑
    }
}

协程开始与停止方式

StartCoroutine("Grisplay");

StopCoroutine("Grisplay");

2.将协程对象转换为IEnumerator类型变量

IEnumerator ie = Grisplay();

StartCoroutine(ie);

StopCoroutine(ie);

注：以上两种协程开始与停止的两种方式必须配套使用不能混搭，StopAllCoroutines()可以停止所有不管任何方式开启的协程

示例1：用携程创造5个Gris，运用到协程传参和协程的嵌套调用，使所有克隆体和本体都进行Gris_Run动画

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

public class NO14_coroutine : MonoBehaviour
{
    public Animator animator;
    //public int grisCount = 5;
    public int grisNum = 0;
    // Start is called before the first frame update
    void Start()
    {
        
        //开启协程
        //StartCoroutine("Grisplay");
        /*IEnumerator ie = Grisplay();
        StartCoroutine(ie);*/
        //停止协程
        //StopCoroutine("Grisplay");
        //StopCoroutine(ie);

        //StopAllCoroutines();
        StartCoroutine("CreateGris",5);
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    IEnumerator CreateGris(int grisCount)
    {
        print(grisCount);
        StartCoroutine(Grisplay(animator));
        while (true)
        {
            if (grisNum >= grisCount)
            {
                yield break;
            }
            GameObject g = Instantiate(animator.gameObject);
            StartCoroutine(Grisplay(g.transform.GetComponent<Animator>()));
            grisNum++;
            yield return new WaitForSeconds(2);
        }
    }

    IEnumerator Grisplay(Animator g)
    {
        
        //等待一帧,与参数无关
        yield return null;
        yield return 10000;
        print("no!!!");
        //暂停几秒（协程挂起）
        yield return new WaitForSeconds(2);
        print("Run");
        g.Play("Gris_Run");
        //在本帧帧末执行以下逻辑
        yield return new WaitForEndOfFrame();
    }
    
}