警戒状态

using UnityEngine;

public class ScanState : IState
{
    private Transform head;
    private float angle;
    private float direction = 1f;

    public ScanState(Transform head)
    {
        this.head = head;
    }

    public void Enter()
    {
        angle = 0f;
        direction = 1f;
        head.GetComponent<Renderer>().material.color = Color.green;
    }

    public void Tick()
    {
        angle += 90f * direction * Time.deltaTime;
        if (angle > 45f)
        {
            angle = 45f;
            direction = -1f;
        }
        if (angle < -45f)
        {
            angle = -45f;
            direction = 1f;
        }
        head.localRotation = Quaternion.Euler(0f, angle, 0f);
    }

    public void Exit()
    {
    }
}