unity 3d 控制 SpringJoint2D 弹力过大的方法

Rigidbody2D 依然采用 Dynamic，在鼠标松开的一刻， 速率 乘以 一个 0-1 之间的浮点数 用来控制 弹力的大小

面板设置 

以下是代码

1.  
   using System.Collections;
2.  
   using System.Collections.Generic;
3.  
   using UnityEngine;
4.  
    
5.  
   public class BirdsController : MonoBehaviour
6.  
   {
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   [Header("旋转原点对象")]
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   public Transform trunOriginPoint;
9.  
    
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    [Header("限定的最大距离")]
11.  
    public float maxDistance;
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    [Header("弹簧力")]
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    [Range(0f, 1f)]
15.  
    public float springForce;
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    /// <summary>
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    /// 鼠标是否按住小鸟
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    /// </summary>
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    private bool isEnter = false;
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    private SpringJoint2D spj;
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    private Rigidbody2D rig;
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    private void Awake()
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    {
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    spj = GetComponent<SpringJoint2D>();
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    rig = GetComponent<Rigidbody2D>();
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    }
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33.  
    // Start is called before the first frame update
34.  
    void Start()
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    {
36.  
    }
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    // Update is called once per frame
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    void Update()
40.  
    {
41.  
    if (isEnter)
42.  
    {
43.  
    transform.position = Camera.main.ScreenToWorldPoint(Input.mousePosition);
44.  
    transform.position = new Vector3(0,0, -Camera.main.transform.position.z);
45.  
     
46.  
    if(Vector3.Distance(transform.position, trunOriginPoint.position) > maxDistance)
47.  
    {
48.  
    Vector3 dir = (transform.position - trunOriginPoint.position).normalized;
49.  
    transform.position = dir * maxDistance trunOriginPoint.position;
50.  
    }
51.  
     
52.  
     
53.  
     
54.  
     
55.  
    }
56.  
    }
57.  
     
58.  
     
59.  
    private void OnMouseDown()
60.  
    {
61.  
    isEnter = true;
62.  
    spj.enabled = true;
63.  
    }
64.  
     
65.  
    private void OnMouseUp()
66.  
    {
67.  
    isEnter = false;
68.  
    spj.enabled = false;
69.  
    rig.velocity *= springForce;
70.  
    }
71.  
    }

------------------------------ 2022-10-11 月更新

类似愤怒小鸟发射 不要使用 SpringJoint2D  有些教学视频简直就是误人子弟 我们学习者要懂得思考 擦亮眼睛

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