c# - 如何检查旋转方向是否不为0且与上一个不相同？

Question

不确定我是否在随机部分做对了，下一个方向不会是 0 并且不相同。

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

public class rotate : MonoBehaviour {

    public Vector3 Direction;
    [Range(0,300)]
    public float speed = 10f;
    public bool randomSpeed = false;
    [Range(0.0f, 360.0f)]
    public float angleToRotate = 360.0f;
    public bool randomDirection = false;

    private Quaternion lastRotation;
    private Vector3 lastDirection;

    // Use this for initialization
    void Start ()
    {
        lastRotation = transform.rotation;
        lastDirection = Direction;
    }

    private void Update()
    {
        if (randomSpeed)
        {
            speed = Random.Range(0, 300);
        }

        if (randomDirection)
        {
            Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));

            if (Direction == new Vector3(0, 0, 0) || lastDirection == Direction)
            {
                Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));
            }

            lastDirection = Direction;
            randomDirection = false;
        }

        transform.Rotate(Direction, speed * Time.deltaTime);
    }
}

这部分:

 if (randomDirection)
            {
                Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));

                if (Direction == new Vector3(0, 0, 0) || lastDirection == Direction)
                {
                    Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));
                }

                lastDirection = Direction;
                randomDirection = false;
            }

我希望方向永远不会是 0,0,0，也不会与当前方向相同。所以每次下一个方向都会不同。

更新:

这就是我现在正在做的。 (尚未测试)

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

public class rotate : MonoBehaviour
{

    public Vector3 Direction;
    [Range(0, 300)]
    public float speed = 10f;
    public bool randomSpeed = false;
    [Range(0.0f, 360.0f)]
    public float angleToRotate = 360.0f;
    public bool randomDirection = false;

    private int counter = 0;

    // Use this for initialization
    void Start()
    {

    }

    private void Update()
    {
        if (randomSpeed)
        {
            speed = Random.Range(0, 300);
        }

        RandomDirection();

        transform.Rotate(Direction, speed * Time.deltaTime);
    }

    private void RandomDirection()
    {
        if (randomDirection)
        {
            Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));
            while (Direction == new Vector3(0, 0, 0))
            {
                counter++;
                Direction = new Vector3(Random.Range(-1, 1), Random.Range(-1, 1), Random.Range(-1, 1));

                if (counter == 5)
                {
                    Direction = new Vector3(1, 0, 0);
                    break;
                }
            }

            counter = 0;
        }
    }
}

在 while 内的 RandomDirection 方法中，如果结果为 0,0,0 并且连续出现 5 次，那么我会给出一个默认方向并停止循环。

Answer 1

如果当前方向等于(0,0,0)或前一个方向。您可以通过我在下面编写的这个 ChangeToSlightlyDifferentVector3(Vector3 vector3) 方法运行方向。

它将通过加 1 或减 1 来偏移 vector3 中的每个坐标，但将其保持在 -1 到 1 的范围内。加或减 1 是随机的，但因为它会为全部或全部减一，并且在检查 (-1, -1, -1) 和 (1, 1, 1) 时，它不能以 (0,0,0) 或前一个方向结束。

Vector3 ChangeToSlightlyDifferentVector3(Vector3 vector3){
    int RandomChance = Random.Range(0,100);
    if (vector3.x == 1f && vector3.x == 1f && vector3.x == 1f)
    {    //Has to "add or loop" so it doesn't end at 0.
        RandomChance = 100f
    }
    else if (vector3.x == -1f && vector3.x == -1f && vector3.x == -1f)
    {    //Has to "subtract or loop" so it doesn't end at 0.
        RandomChance = 0f;
    }
    float x = RandomizeToDifferentOne(vector3.x, RandomChance);
    float y = RandomizeToDifferentOne(vector3.y, RandomChance);
    float z = RandomizeToDifferentOne(vector3.z, RandomChance);
    Vector3 newVector3 = new Vector3(x,y,z);    
    return newVector3;
}

float RandomizeToDifferentOne(int input, int RandomizeChance){

    if (RandomChance < 50)
    {
      return DeductOrLoop(input);
    }
    else
    {
      return AddOrLoop(input);
    }
}

float AddOrLoop(float input){
    float offset = Random.Range(0.1f, 0.75f);
    float leftOver = (input + offset) - 1f;
    input += offset;
    if (input > 1f)
    {
    input = -1f + leftOver;
    }

    return input;
}

float DeductOrLoop(float input){
    float offset = Random.Range(0.1f, 0.75f);
    float leftOver = (input - offset) + 1f;
    input -= offset;
    if (input < -1f)
    {
    input = 1f;
    input -= leftOver;
    }
    return input;
}