玩家相对于相机方向的移动 C#答案

【问题标题】：Player Movement Relative to Camera Direction C#玩家相对于相机方向的移动 C#
【发布时间】：2021-04-18 10:57:00
【问题描述】：

我对统一制作游戏相当陌生，我正试图让我的玩家朝着相对于相机位置的方向移动。我不知道该怎么做，下面是我的代码，有人能帮我吗？

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

public class PlayerMovement : MonoBehaviour
{
    // Start is called before the first frame update


    public Rigidbody rb;
    public Transform cam;

    public float movementSpeed = 6.0f;      //speed the player moves at
    public float jumpHeight = 200.0f;       //height of the jump
    public float timeBetweenJumps = 1.0f;   //delay between each jump so the player can't jump again before reaching the ground
    private float timestamp;

    public Vector3 movement;
 
    void Start()
    {
        rb = this.GetComponent<Rigidbody>();
    }


    void Update()
    {
      
        movement = new Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical"));     
        transform.LookAt(transform.position + new Vector3(movement.x, 0f, movement.z));         // makes the player always face in the direction of movement

        if (Time.time >= timestamp && (Input.GetKeyDown("space")))
        {
            GetComponent<Rigidbody>().velocity = Vector3.up * jumpHeight;                       // multiplies the players Y position by the jumpHeight variable which causes the player to jump in-game
            timestamp = Time.time + timeBetweenJumps;

        }

    }
    

    void FixedUpdate()
    {
        moveCharacter(movement);    

    }

    void moveCharacter(Vector3 direction)
    {
        rb.MovePosition(transform.position + (direction * movementSpeed * Time.deltaTime));     //moves the rigidbody (player) 
        
    }
}

【问题讨论】：

标签： c# unity3d camera

【解决方案1】：

首先

// multiplies the players Y position by the jumpHeight variable which causes the player to jump in-game

不，它没有！您正在做的是完全替换速度，因此任何向前的速度都会被它覆盖。这是故意的吗？如果不是，它可能应该是

if (Time.time >= timestamp && (Input.GetKeyDown("space")))
{
    var velocity = rb.velocity;
    velocity.y = jumpHeight;
    rb.velocity = velocity;                      
    timestamp = Time.time + timeBetweenJumps;
 }

那么你正在世界空间中移动。

为了考虑相机的方向，例如

[SerializeField] private Camera mainCamera;

private void Awake ()
{
    if(!mainCamera) mainCamera = Camera.main;   
}

然后

movement = mainCamera.transform.right * Input.GetAxis("Horizontal") + mainCamera.transform.forward * Input.GetAxis("Vertical");

所以现在输入是相对于相机的当前旋转使用的。请注意，如果相机以某种方式在其他轴上旋转，而不仅仅是 Y ...

，请注意，这可能会表现得很奇怪

【讨论】：