UMiniGame/Assets/Scripts/AirPlane.cs

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

public class AirPlane : MonoBehaviour
{
    [Tooltip("×óÓÒ·­×ªËÙ¶È")]
    public float flipSpeed = 1f;
    [Tooltip("×óÓÒ·­×ª½Ç¶È")]
    public float flipAngle = 25f;

    private float beforePositionX = 0;
    private float lerpEulerAnglesZ = 0;
    private float targetEulerAnglesZ = 0;
    private Vector3 targetEulerAngles = Vector3.zero;
    // Start is called before the first frame update
    void Start()
    {
        beforePositionX = transform.position.x;
        targetEulerAngles = transform.eulerAngles;
        lerpEulerAnglesZ = transform.eulerAngles.z;
        targetEulerAnglesZ = lerpEulerAnglesZ;
    }

    // Update is called once per frame
    void Update()
    {
        if (transform.position.x < beforePositionX)
        {
            targetEulerAnglesZ = -flipAngle;
        }
        else
        {
            targetEulerAnglesZ = flipAngle;
        }
        beforePositionX = Mathf.Lerp(beforePositionX, transform.position.x, Time.deltaTime * flipSpeed);
        if (Mathf.Abs(beforePositionX - transform.position.x) < 0.3f)
        {
            targetEulerAnglesZ = 0;
        }

        lerpEulerAnglesZ = Mathf.Lerp(lerpEulerAnglesZ, targetEulerAnglesZ, Time.deltaTime * flipSpeed);
        targetEulerAngles.Set(transform.eulerAngles.x, transform.eulerAngles.y, lerpEulerAnglesZ);
        transform.eulerAngles = targetEulerAngles;
    }
}