尝试在 Unity 中创建随机 Vector3

Question

我正在尝试创建一个随机 Vector3，但 Unity 给了我这个错误：UnityException: Range is not allowed to be called from a MonoBehaviour 构造函数（或实例字段初始化程序），而是在 Awake 或 Start 中调用它。从 MonoBehavior 'particleMover' 调用。 这是我的代码：

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

public class particleMover : MonoBehaviour
{
    public float moveSpeed;
    public float temperature;
    public Rigidbody rb;
    public Transform tf;
    static private float[] directions;

    // Start is called before the first frame
    void Start()
    {
        System.Random rnd = new System.Random();
        float[] directions = { rnd.Next(1, 360), rnd.Next(1, 360), rnd.Next(1, 360) };
    }

    // Update is called once per frame
    void Update()
    {
        Vector3 direction = new Vector3(directions[0], directions[1], directions[2]);
        direction = moveSpeed * direction;
        rb.MovePosition(rb.position + direction);
    }
}

Answer 1

Vector3 direction = Random.insideUnitSphere;

而您使用了 (1, 360)，似乎您将方向与旋转混淆了。

Vector3(x, y, z) - x, y, z 是位置值，而不是角度。

另外，需要使用Time.deltaTime

direction = moveSpeed * direction * Time.deltaTime;

更多信息：https://docs.unity3d.com/ScriptReference/Time-deltaTime.html

更新答案：

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

public class particleMover : MonoBehaviour
{
    public float moveSpeed;
    public float temperature;
    public Rigidbody rb;
    public Transform tf;
    private Vector3 direction = Vector3.zero;

    void Start()
    {
        direction = Random.insideUnitSphere;
    }

    void Update()
    {
        rf.position += direction * moveSpeed * Time.deltaTime;
        // If this script is attached to tf object
        // transform.position += direction * moveSpeed * Time.deltaTime;
    }
}