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

public class LockOn : MonoBehaviour
{
    public float lockRange = 50f;
    public Image aimImage;
    private Camera FPSCamera;
    private Color originalColor;

    void Start()
    {
        FPSCamera = GetComponent<Camera>();
        originalColor = aimImage.color;
    }

    void Update()
    {
        Vector3 rayOrigin = FPSCamera.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0));
        RaycastHit hit;

        if(Physics.Raycast(rayOrigin, FPSCamera.transform.forward, out hit, lockRange))
        {
            string hitTag = hit.transform.gameObject.tag;

            if(hitTag == "Target")
            {
                // 赤色に変更
                aimImage.color = new Color(1.0f, 0f, 0f, 1.0f);
            }
            else
            {
                aimImage.color = originalColor;
            }
        }
    }
}