GameController

using UnityEngine;
using System.Collections;
 
public class GameController : MonoBehaviour {
 
	public bool craneSwitch;
	public static GameController instance;

	void Awake () {
		// There can only be one
		if (instance != null)
		{
			this.enabled = false;
			Destroy (this.gameObject);
			return;
		}

		instance = this;
	}

	// Use this for initialization
	void Start () {
		craneSwitch = false;
	}

	// Update is called once per frame
	void Update () {

		if (Input.GetKeyDown(KeyCode.Space))
		{
			craneSwitch = !craneSwitch;
			Debug.Log (craneSwitch);
		}
	}
}