Player

using UnityEngine;
using System.Collections;

public class Player : MonoBehaviour {
    private Transform TS;
    public int pspeed = 8;
    public static int playerLives = 3;
    public static int score = 0;

    float timer = 0f;

    //variable to reference prefab.
    public GameObject LaserFab;

    // Use this for initialization
    void Start () {

        TS = transform;

        TS.position = new Vector3(0, -3.7f, 0); //Spawn point
    }

    // Update is called once per frame
    void Update () {
        TS.Translate(Vector3.right * Input.GetAxis("Horizontal") * pspeed * Time.deltaTime);

        if (TS.position.x>11.25f || TS.position.x<-11.25f) {
            TS.position = new Vector3 (TS.position.x*-1, TS.position.y, TS.position.z);
        }

        //Fire a laser with the Spacebar.
        if (Input.GetKeyDown("space")) {

            //Set Laser position
            Vector3 position = new Vector3(TS.position.x, TS.position.y+.8f, TS.position.z);

            //Fire projectile.
            Instantiate(LaserFab, position, Quaternion.identity);
        }

        if (Time.time - timer > 0.4f) {
            renderer.enabled = true;
        }

        print ("Lives remaining: " + playerLives + " Score: " + score + " Current playing time: " + Time.time);
    }

    void OnTriggerEnter(Collider collider)
    {
        if (collider.CompareTag ("Enemy")) { //Tag is name of prefab.
            //When the enemy hits the player, destroy the player and the enemy.
            playerLives--;
            renderer.enabled = false;
            timer = Time.time;
            print (playerLives);
        }

        if (playerLives < 1)
            Destroy(this.gameObject);
    }
}