If looks could kill

We got this far. We might as well try to kill Ethan (haha!). Here are the specifications for this new feature:

• Looking at Ethan hits him with our line-of-sight ray gun
• Sparks are emitted when the gun hits its target
• After 3 seconds of being hit, Ethan is killed
• When he's killed, Ethan explodes (we get a point) and then he respawns at a new location

The KillTarget script

This time, we'll attach the script to a new empty GameController object by performing the following steps:

1. Create an empty game object and name it GameController.
2. Attach a new C# script to it, using Add Component, named KillTarget.
3. Open the script in MonoDevelop.

Here's the completed KillTarget.cs script:

using UnityEngine;
using System.Collections;

public class KillTarget : MonoBehaviour {
  public GameObject target;
  public ParticleSystem hitEffect;
  public GameObject killEffect;
  public float timeToSelect = 3.0f;
  public int score;

  private float countDown;

  void Start () {
    score ...