『功能项目』宠物的召唤跟随【79】

我们打开上一篇78装备齐全特效的项目，

本章要做的事情是实现宠物跟随功能

首先创建一个宠物召唤界面

重命名按钮组件为CallPetBtn

重命名Image组件为PetExample

宠物资源所在资源文件夹

在主角预制体中的身后位置设置一个宠物跟随点

创建宠物动画控制器

拖拽至Pet01预制体动画控制器框选

创建脚本：PetFollowTarget.cs

实现宠物到达目标点就播放Idle动画，未到目标点就朝着目标点前进

cs 复制代码

using UnityEngine;
public class PetFollowTarget : MonoBehaviour{
    Transform target; 
    float speed = 2f; 
    Animator animator;
    void Start(){
        target = GameObject.Find("PlayerNormal/PetsSmallPos").gameObject.transform;
        animator = GetComponent<Animator>(); 
    }
    void Update(){
        if (target != null){
            Vector3 direction = target.position - transform.position;
            float distance = direction.magnitude;
            if (distance > 0.1f){
                animator.SetBool("IsMoving", true);
                transform.LookAt(target.position);
                transform.position = Vector3.MoveTowards(transform.position, target.position, speed * Time.deltaTime);
            }
            else{
                animator.SetBool("IsMoving", false);
            }
        }
    }
}

修改脚本：CallOrHidePet.cs

cs 复制代码

using UnityEngine;
using UnityEngine.UI;
public class CallOrHidePet : MonoBehaviour{
    Button callBtn;
    GameObject petPrefab;
    GameObject petInstance;
    void Start(){
        petPrefab = Resources.Load<GameObject>("Prefabs/Pets/Pet01Small");
        callBtn = transform.Find("Image/CallPetBtn").GetComponent<Button>(); ;
        callBtn.onClick.AddListener(OnCallButtonClick);
    }
    public void OnCallButtonClick(){

        if (petInstance == null){
            petInstance = Instantiate(petPrefab,
                GameObject.FindWithTag("Player").transform.position + new Vector3(-2f, 0, -1f),
                Quaternion.identity);
            petInstance.AddComponent<PetFollowTarget>();
        }
        else{
            if (GameObject.Find("PlayerNormal") == null)
                return;
            else
                Destroy(petInstance);
        }
    }
    void OnDestroy(){
        Button callBtn = transform.Find("Image/CallPetBtn").GetComponent<Button>();
        if (callBtn != null)
            callBtn.onClick.RemoveListener(OnCallButtonClick);
    }
}