Coins Come Back

Part of the Physics and Gameplay section of Coddy's Unity journey. Lesson 31 of 71.

Challenge

Medium

Bring a collected coin back after respawnDelay seconds.

In Coin.cs, add using System.Collections; and public float respawnDelay = 3f;.
Write IEnumerator Respawn(): turn off GetComponent<Renderer>().enabled and GetComponent<Collider>().enabled, wait respawnDelay, then turn both on.
Replace gameObject.SetActive(false); with StartCoroutine(Respawn());: an inactive object runs no coroutines.

Press Play and collect a coin: it returns 3 seconds later. Then Check.

Try it yourself

using UnityEngine;

public class Coin : MonoBehaviour
{
    public int value = 1;

    void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            other.GetComponent<Ball>().AddScore(value);
            gameObject.SetActive(false);
        }
    }
}

All lessons in Physics and Gameplay

2Collisions

OnCollisionEnter What Did I Hit?Break on Impact Standing on the Ground Bounce and Friction Collider Shapes Recap: Breakable Wall

5Project: Coin Rush

The Rolling Ball Coins to Collect

Keeping Score

Coins Come Back Project lesson

Beat the Clock

You Win

You Lose

8The Camera

Smooth Follow Orbit Camera Look Ahead Camera Shake Recap: Chase Camera

11Final Challenges

Cannon Range Moving Targets Marble Golf Into the Cup Escape Room The Door

Practice on your own: Unity playground