如何在 Y 轴上进行局部旋转

Question

你好，我在零重力下有像宇航员一样的角色控制，但我想在 y 轴上局部旋转它，但它不能旋转。我尝试在 y 轴上旋转它，但玩家正在相对于世界旋转。我想要它相对于对象。谢谢你的帮助。

这是我的脚本

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

public class Astronaut : MonoBehaviour
{
    private static AstronautControls astronautControls;
    public Rigidbody rb;
    public float force;
    public float torque;
    public Vector2 move;
    float rotateHorizontal;
    float rotateVertical;
    float upDown;
    public PlayerInput playerInput;

    private void Awake()
    {
        astronautControls = new AstronautControls();
    }


    private void OnEnable()
    {
        astronautControls.Enable();
    }

    private void OnDisable()
    {
        astronautControls.Disable();
    }

    void Start()
    {
        rb = GetComponent<Rigidbody>();
    }

    void FixedUpdate()
    {
        Move();
        MoveUpDown();
        RotateHorizontal();
        RotateVertical();
    }

    private void Move()
    {
        move = playerInput.actions["Move"].ReadValue<Vector2>();
        rb.AddForce(transform.forward * force * move.y * Time.deltaTime);
        rb.AddForce(transform.right * force * move.x * Time.deltaTime);
        rb.AddForce(transform.up * force * upDown * Time.deltaTime);
    }

    private void MoveUpDown()
    {
        upDown = playerInput.actions["MoveVertical"].ReadValue<float>();
        rb.AddForce(transform.up * force * upDown * Time.deltaTime);
    }

    private void RotateHorizontal()
    {
        rotateHorizontal = playerInput.actions["RotateHorizontal"].ReadValue<float>();
        MouseLook.Z += rotateHorizontal;
    }

    //here is the problem when i rotate it seems it has gimbal lock or something i want local rotate relative to the player
    private void RotateVertical()
    {
        rotateVertical = playerInput.actions["RotateVertical"].ReadValue<float>();
        MouseLook.Y += rotateVertical;
    }
}

这是鼠标的样子

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


public class MouseLook : MonoBehaviour
{
    Mouse mouse;
    public static float X;
    public static float Y;
    public static float Z;
    const float MIN_X = -90f;
    const float MAX_X = 90f;
    const float MIN_Y = -180f;
    const float MAX_Y = 180f;
    public static Vector3 euler;

    public float Sensitivity;
 
    void Awake()
    {
        mouse = Mouse.current;
        euler = transform.rotation.eulerAngles;
        X = euler.x;
        Y = euler.y;
        Z = euler.z;
    }

    void Update()
    {
        X -= mouse.delta.y.ReadValue() * (Sensitivity * Time.deltaTime);
        if (X < MIN_X) X = MIN_X;
        else if (X > MAX_X) X = MAX_X;
        Y += mouse.delta.x.ReadValue() * (Sensitivity * Time.deltaTime);
        if (Y < MIN_Y) Y = MIN_Y;
        else if (Y > MAX_Y) Y = MAX_Y;
        transform.parent.localRotation = Quaternion.Euler(X, Y, Z);
    }
}

我的刚体设置

Answer 1

我提到了一些关于如何在本地空间中旋转对象的解决方案，但我相信应该为您的实现工作的解决方案将是最后一个。为了展示它的工作原理，这里有一个简单的测试脚本：

using UnityEngine;

public class TestScript2 : MonoBehaviour
{
    private float changeInX = 0f;
    private float changeInY = 10f;
    private float changeInZ = 0f;

    private void Update()
    {
        if(Input.GetKey(KeyCode.Space))
        {
            transform.rotation = transform.rotation * Quaternion.Euler(changeInX, changeInY, changeInZ);
        }
    }
}

只要按下Space 键，它就会旋转一个对象。我使用此脚本设置的对象是旋转对象的子对象。这是一个 gif，显示了一个立方体与另一个立方体围绕其局部 Y 轴旋转。

如果您希望所有轴在本地旋转，我相信插入 changeInX 和 changeInZ 会产生与 gif 相似的结果，其中旋转是在本地应用的。