The code in this chapter

Let's take a look at the code again to make sure we are on the same page.

The code for Collectable.cs:

using UnityEngine;
using System.Collections;

public class Collectable : MonoBehaviour {
  
  bool isCollected = false;

  void Show() {
    this.GetComponent<SpriteRenderer>().enabled = true;
    this.GetComponent<CircleCollider2D>().enabled = true;
    isCollected = false;
  }

  void Hide() {
    this.GetComponent<SpriteRenderer>().enabled = false;
    this.GetComponent<CircleCollider2D>().enabled = false;
  }


  void Collect() {

    isCollected = true;
    Hide();
    GameManager.instance.CollectedCoin();
  }

  void OnTriggerEnter2D(Collider2D other) {
    
    if (other.tag == "Player") {
      Collect();
    }
  }  
}

The code for playerController.cs:

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

  public static PlayerController instance;

  public float jumpForce = 6f...