1.步骤：

（1）导入模型  

（2）添加状态机

（3）添加动画控制器

（4）通过脚本触发条件

(5)控制脚本代码

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

public class AnimalCs : MonoBehaviour
{
    private Animator anim;
    // Start is called before the first frame update
    void Start()
    {
        anim = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Alpha0))
        {
           // anim.SetBool("isRuning", false);
            anim.SetInteger("id", 0);
        }
        else if (Input.GetKeyDown(KeyCode.Alpha1))
        {
            //anim.SetBool("isRuning", false);
            anim.SetInteger("id", 1);
        }
        else if (Input.GetKeyDown(KeyCode.Alpha2))
        {
            //anim.SetBool("isRuning", false);
            anim.SetInteger("id", 2);
        }
        else if (Input.GetKeyDown(KeyCode.Alpha3))
        {
            //anim.SetBool("isRuning", false);
            anim.SetInteger("id", 3);
        }
        else if (Input.GetKeyDown(KeyCode.Alpha4))
        {
            anim.SetInteger("id", 4);
            //anim.SetBool("isRuning", true);

            //anim.SetTrigger("run2");
            //anim.SetInteger("id2", 130);
        }
    }
}