Enemy Scripts

//==Scripts Used for Enemies==//

public class DestroyOnContact : MonoBehaviour {
	//Declare a scorevalue for the object this is attached to
	public int scoreVal;

	//Call the GameController Script
	private GameController gc;

	//When another object tagged with player collides with this, destroy both objects
	public float count;
	void Awake (){
		GameObject gco = GameObject.FindGameObjectWithTag("GameController");
		gc = gco.GetComponent<GameController>();
		count = 0;
	}

	void OnTriggerEnter2D(Collider2D other){
		if (other.CompareTag ("Boundary") || other.CompareTag ("Enemy")) {
			return;
		}
		if (other.CompareTag ("Weapon Shot") && count < 3) {
			count = count + 1;
			Destroy (other.gameObject);
			return;
		}
		else if (count > 2) {
			Destroy (other.gameObject);
			//Rather than duplicating code here, we should write and call a function
			Destroy (gameObject);
			gc.AddScore (scoreVal);
		}
	}
}

//===============//

public class Enemy1Control : MonoBehaviour {
	//What we want to do: Have the enemy move forward, only 1 direction; Have the enemy shoot; Have the enemy shoot at the player's position
	//Have the enemy move
	public GameObject shot;
	public Rigidbody2D rb;
	public float speed;

	//Check that the player is in the game
	public GameObject thePlayer;
	//Check that the Player isn't dead
	public bool thePlayerLives;

	//Have the enemy shoot at the player's position; the movement code is in the shot itself so what we do is instantiate it at the firing point
	public GameObject fireShot;
	//Where are we shooting from?
	public Transform fireMouth;
	//How long to wait between firing
	public float rateOfFire;
	public float fireDelay;

	//Call the Player Lives function just in case the shot is instantiated after the player dies
	private GameController gc;

	void Awake(){
		GameObject gco = GameObject.FindGameObjectWithTag("GameController");
		gc = gco.GetComponent<GameController>();
		rb = GetComponent<Rigidbody2D>();
		rb = GetComponent<Rigidbody2D>();
		rb.velocity = (-transform.right * speed);
		gc.Invoke ("CheckLIves",0);
		StartCoroutine ("Shooter");
	}

	void FixedUpdate () {
		gc.Invoke ("CheckLIves",0);
	}
	//Coroutine for spawning and shooting objects
	IEnumerator Shooter() {
		while (gc.thePlayerLives) {
//			print ("Coroutine Started");
			yield return new WaitForSeconds (fireDelay);
			gc.Invoke ("CheckLIves",0);
			if (gc.thePlayerLives) {
				for (int i = 0; i < 1; i++) {
					rb.velocity = Vector2.zero;
					yield return new WaitForSeconds (fireDelay);
					Instantiate (fireShot, fireMouth.position, fireMouth.rotation);
					rb.velocity = (-transform.right * speed);
					yield return new WaitForSeconds(rateOfFire);
				}
			}
			yield return new WaitForSeconds(rateOfFire);
			if (!gc.thePlayerLives) {
				rb.velocity = (-transform.right * speed);
				break;
			}
		}
	}
}

//===============//

public class Enemy2Control : MonoBehaviour {
	public Rigidbody2D rb;
	public float speed;

	//Have the enemy shoot at the player's position; the movement code is in the shot itself so what we do is instantiate it at the firing point
	public GameObject fireShots;
	//Where are we shooting from?
	public Transform fireBig;
	public Transform fireLong;
	//How long to wait between firing
	public float rateOfFireBig;
	public float rateOfFireLong;
	public float fireDelay;

	void Start () {
		rb = GetComponent<Rigidbody2D>();
		rb.velocity = (-transform.right * speed);
		InvokeRepeating ("BigGuns",fireDelay,rateOfFireBig);
		InvokeRepeating ("LongGuns",fireDelay,rateOfFireLong);
	}

	void BigGuns() {
		if (Time.time > rateOfFireBig) {
			Instantiate (fireShots, fireBig.position, fireBig.rotation);

		}
	}
	void LongGuns() {
		if (Time.time > rateOfFireLong) {
			Instantiate (fireShots, fireLong.position, fireLong.rotation);
		}
	}
}


//===============//


public class Enemy2DestroyOnContact : MonoBehaviour {

	//Declare a scorevalue for the object this is attached to
	public int scoreVal;

	//Call the GameController Script
	private GameController gc;

	void Awake (){
		GameObject gco = GameObject.FindGameObjectWithTag("GameController");
		gc = gco.GetComponent<GameController>();
	}

	void OnTriggerEnter2D(Collider2D other){
		if (other.CompareTag ("Weapon Shot")) {
			Destroy (other.gameObject);
			Destroy (gameObject);
			gc.AddScore (scoreVal);
		}
	}
}


//===============//


public class EnemyShot2Control : MonoBehaviour {

	public GameObject shot;
	public Rigidbody2D rb;
	public float speed;

	// Use this for initialization
	void Start () {
		rb = GetComponent<Rigidbody2D>();
		rb.velocity = ((-transform.right) * speed);
	}

}


//===============//


public class EnemyShotScript : MonoBehaviour {

	public GameObject shot;
	public Rigidbody2D rb;
	public float speed;

	public GameObject target;
	//private Transform shotTransform;
	private Vector3 targetPOS;

	//Call the Player Lives function just in case the shot is instantiated after the player dies
	private GameController gc;

	void Awake(){
		GameObject gco = GameObject.FindGameObjectWithTag("GameController");
		gc = gco.GetComponent<GameController>();
		rb = GetComponent<Rigidbody2D>();
	}

	void Start () {
		if (gc.thePlayerLives) {
			BeginShot ();
		} else
			Destroy (gameObject);
	}

	void BeginShot(){
		//Theoretically this finds the position of the player
		target = GameObject.FindGameObjectWithTag("Player");
		targetPOS = new Vector3 (target.transform.position.x, target.transform.position.y, target.transform.position.z);
		transform.rotation = Quaternion.FromToRotation (transform.up, targetPOS - transform.position) * transform.rotation;
		rb.velocity = (transform.up * speed);
		//Taken from Unity Answers, we need to break this down and figure out why it works
		//transform.rotation = Quaternion.FromToRotation (transform.up, targetPOS - transform.position) * transform.rotation;

	}
}