统一。如何使玩家转向运动方向

Question

正如您在此视频中看到的那样，对象向任何方向移动，但其模型不会沿移动方向旋转。怎么解决？？

视频链接

https://youtu.be/n4FDFDlsXK4

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

public class MoveController : MonoBehaviour
{
    private CharacterController controller = null;
    private Animator animator = null;
    private float speed = 5f;


    void Start()
    {
        controller = gameObject.GetComponent<CharacterController>();
        animator = gameObject.GetComponent<Animator>();
    }

    void Update()
    {
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        Vector3 move = (transform.right * x) + (transform.forward * z);
        controller.Move(move * speed * Time.deltaTime);

        var angle = Mathf.Atan2(move.z, move.x) * Mathf.Rad2Deg;

        if (x != 0 || z != 0) animator.SetTrigger("run");
        if (x == 0 && z == 0) animator.SetTrigger("idle");
    }
}

Answer 1

不要使用transform.forward 和transform.right 来制作您的移动矢量，只需在世界空间中制作即可。然后，您可以将transform.forward设置为移动方向。

另外，正如derHugo 在下面的评论中提到的，你应该

1. 避免使用完全相等来比较浮点数。而是使用Mathf.Approximately 或使用您自己的阈值，如下所示

2. 避免每帧设置触发器。相反，您可以使用一个标志来确定您是否已经空闲或已经在运行，并且仅在您尚未执行此操作时才设置触发器。

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

public class MoveController : MonoBehaviour
{
    private CharacterController controller = null;
    private Animator animator = null;
    private float speed = 5f;
    bool isIdle;

    void Start()
    {
        controller = gameObject.GetComponent<CharacterController>();
        animator = gameObject.GetComponent<Animator>();
        isIdle = true;
    }

    void Update()
    {
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        Vector3 move = new Vector3(x, 0f, z);
        controller.Move(move * speed * Time.deltaTime);

        var angle = Mathf.Atan2(move.z, move.x) * Mathf.Rad2Deg;

        if (move.magnitude > idleThreshold)
        {
            transform.forward = move;
            if (isIdle) 
            {
                animator.SetTrigger("run");
                isIdle = false;
            }
        } 
        else if (!isIdle)
        {
            animator.SetTrigger("idle");
            isIdle = true;
        }
    }
}