带有胶囊对撞机的刚体在*与物体碰撞后自行移动

Question

首先我会说我对 Unity 和 C# 非常陌生，并且在学习了 Unity 教程系列之后，我正在制作我的第一个个人项目。我开始制作第一人称射击游戏，我让摄像机向下移动，我刚刚编写了一些代码来处理玩家移动和加速。最初在平面上移动时它工作正常，但是一旦我的玩家对象（PlayerColliderParent）碰到我放置在场景中的立方体，它就会开始以恒定的速度和方向自行移动，具体取决于关于它是如何撞到立方体的。除了 PlayerColliderParentScript.cs 之外，没有任何其他脚本可以移动 PlayerColliderParent。

这是出现问题的视频 why is it moving???

这是 PlayerColliderParentScript.cs（附加到 PlayerColliderParent）

using System.Collections.Generic;
using UnityEngine;

public class PlayerColliderParentScript : MonoBehaviour
{
    public Transform cameraRotation;
    public Vector3 directionalInput;
    public float accelerationFactor = 0.1f;
    public float maxSpeed = 6f;
    public Vector3 directionalSpeed;

    // Start is called before the first frame update
    void Start()
    {
       
    }

    // Update is called once per frame
    void Update()
    {
        //rotate horizontally with camera
        transform.localEulerAngles = new Vector3(0, cameraRotation.localEulerAngles.y, 0);

    }

    void FixedUpdate()
    {
        //accelerate while movement key is held
        //z axis
        if (Input.GetKey(KeyCode.W))
        {
            directionalInput.z = 1;
            if (directionalSpeed.z < maxSpeed)
            {
                directionalSpeed.z += accelerationFactor;
            }
        }
        else if (Input.GetKey(KeyCode.S))
        {
            directionalInput.z = -1;
            if (directionalSpeed.z < maxSpeed)
            {
                directionalSpeed.z += accelerationFactor;
            }
        }
        else if (directionalSpeed.z > 0)
        {
            directionalInput.z = 0;
            directionalSpeed.z -= accelerationFactor;
        }
        else if (directionalSpeed.z < 0)
        {
            directionalInput.z = 0;
            directionalSpeed.z += accelerationFactor;
        }
        else
        {
            directionalInput.z = 0;
        }

        //x axis
        if (Input.GetKey(KeyCode.D))
        {
            directionalInput.x = 1;
            if (directionalSpeed.x < maxSpeed)
            {
                directionalSpeed.x += accelerationFactor;
            }
        }
        else if (Input.GetKey(KeyCode.A))
        {
            directionalInput.x = -1;
            if (directionalSpeed.x < maxSpeed)
            {
                directionalSpeed.x += accelerationFactor;
            }
        }
        else if (directionalSpeed.x > 0)
        {
            directionalInput.x = 0;
            directionalSpeed.x -= accelerationFactor;
        }
        else if (directionalSpeed.x < 0)
        {
            directionalInput.x = 0;
            directionalSpeed.x += accelerationFactor;
        }
        else
        {
            directionalInput.x = 0;
        }

        //move the player according to directional speed
        Vector3 direction = directionalInput.normalized * Time.deltaTime;
        float velocityX = direction.x * directionalSpeed.x;
        float velocityY = direction.y * directionalSpeed.y;
        float velocityZ = direction.z * directionalSpeed.z;
        Vector3 velocity = new Vector3(velocityX, velocityY, velocityZ);
        transform.Translate(velocity);
    }


}

Answer 1

确保Rigidbody 具有isKinematic启用。这样您就可以通过transform.Translate 在FixedUpdate 中控制它，并且在碰撞检测仍然完好无损时，它不会对任何物理做出反应。

---

否则，通常只要您有 Rigidbody，您就不想通过 Transform 组件设置值。

我很确定会发生什么，在您已经移动之后，Rigidbody 具有一定的velocity。你永远不会再改变那个速度，所以在碰撞后你有两个，用户输入通过Transform和Rigidbody自己的velocity应用。

与其使用transform.Translate，不如直接操作Rigidbody.velocity本身。

[SerializeField] Rigidbody _rigidbody;

...

    //accelerate while movement key is held
    //z axis
    if (Input.GetKey(KeyCode.W))
    {
        directionalInput.z = 1;
        directionalSpeed.z += accelerationFactor * Time.deltaTime;
    }
    else if (Input.GetKey(KeyCode.S))
    {
        directionalInput.z = -1;
        directionalSpeed.z -= accelerationFactor * Time.deltaTime;
    }
    else
    {
        directionalInput.z = 0;

        if (directionalSpeed.z > 0)
        {
            directionalSpeed.z -= accelerationFactor * Time.deltaTime;
        }
        else if (directionalSpeed.z < 0)
        {
            directionalSpeed.z += accelerationFactor * Time.deltaTime;
        }
    }

    directionalSpeed.z = Mathf.Clamp(directionalSpeed.z, -maxSpeed, maxSpeed);

    //x axis
    if (Input.GetKey(KeyCode.D))
    {
        directionalInput.x = 1;
        directionalSpeed.x += accelerationFactor * Time.deltaTime;
    }
    else if (Input.GetKey(KeyCode.A))
    {
        directionalInput.x = -1;
        directionalSpeed.x -= accelerationFactor * Time.deltaTime;
    }
    else
    {
        directionalInput.x = 0;

        if (directionalSpeed.x > 0)
        {
            directionalSpeed.x -= accelerationFactor * Time.deltaTime;
        }
        else if (directionalSpeed.x < 0)
        {
            directionalSpeed.x += accelerationFactor * Time.deltaTime;
        }
    }

    directionalSpeed.x = Mathf.Clamp(directionalSpeed.x, -maxSpeed, maxSpeed);

    _rigidbody.velocity = directionalInput;

---

正如@Rhach 所提到的，轮换也是一个问题。

你可能更应该使用例如

_rigidbody.MoveRotation(new Vector3(0, cameraRotation.localEulerAngles.y, 0));