lvjincheng_infraredlocategamepc/Assets/GameDemo/GameController.cs

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

public class GameController : MonoBehaviour
{
    [System.NonSerialized] public GameObject gameNode;

    void Start()
    {
        gameNode = transform.GetChild(0).gameObject;
        if (UnityEngine.SceneManagement.SceneManager.GetActiveScene().name != "GameDemo")
        {
            gameNode.SetActive(false);
        }
    }

    [System.NonSerialized] public bool crossHairIsOn = true;
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.F1))
        {
            gameNode.SetActive(!gameNode.activeSelf);
        }
        if (Input.GetKeyDown(KeyCode.F2))
        {
            crossHairIsOn = !crossHairIsOn;
        }
    }
}