gistfile1.cs

using UnityEngine;
using System.Collections;

public class Enemy : MonoBehaviour {

	public int hp = 5;
	public GameObject dropPrefab;
	public GameObject heartPrefab;
	int maxWalkSpeed = 3;
	int direction = 3;
	bool freeze = false;
	SpriteRenderer sr;
	float secsToFreeze = 1;
	public Player player;

	public bool isBoss = false;

	public tk2dSpriteAnimator tkanim;

	void Start () {
		sr = GetComponent<SpriteRenderer>() as SpriteRenderer;
		if(player==null) {
			player = FindObjectOfType(typeof(Player)) as Player;
		}

		isBoss = ((Random.Range(0,100)<1.0f) /*&&(Time.timeSinceLevelLoad>15)*/ );

		if(isBoss) {
			transform.localScale = 2.0f*Vector3.one;
			hp = 150;
			maxWalkSpeed = 1;
			//tkanim.transform.localScale = 2.0f*Vector3.one;
		}
		else {
			if(Random.Range(0,100)<20) {
				// 20% of enemies are armored
				hp *= 2;
			}
		}

		direction = maxWalkSpeed;
	}

	//float lasty = 0;
	void Update () {
		if(freeze) return;
		//transform.position = new Vector3(transform.position.x+direction*Time.deltaTime, transform.position.y, transform.position.z);
		rigidbody2D.velocity = new Vector2(direction, rigidbody2D.velocity.y);

		if(direction>0) {
			transform.localScale = new Vector3(-Mathf.Abs(transform.localScale.x),transform.localScale.y,transform.localScale.z);
		}
		if(direction<0) {
			transform.localScale = new Vector3(Mathf.Abs(transform.localScale.x),transform.localScale.y,transform.localScale.z);
		}

		//float yd = Mathf.Abs(transform.position.y - lasty);
		//lasty = transform.position.y;


		//if(rigidbody2D.velocity.magnitude>0.1f) {
		//if(yd>0.0000001f) {
		if(Mathf.Abs(rigidbody2D.velocity.y)>0.1f) {
			// Falling
			if(hp>5)
				tkanim.Play("ArmoredFalling");
			else
				tkanim.Play("Falling");
		}
		else {
			if(hp>5)
				tkanim.Play("ArmoredWalk");
			else
				tkanim.Play("Walk");
		}

	}

	void OnTriggerEnter2D(Collider2D c) {
		if(c.CompareTag("Bullet")) {
			//Debug.Log("bullet hit enenmy in OnTriggerEnter2D");

			// Hit by bullet
			Bullet b = c.GetComponent<Bullet>() as Bullet;
			b.Hit(this);
		}
	}

	void OnCollisionEnter2D(Collision2D c) {
		if(c.collider.CompareTag("Enemy")) return;
		ContactPoint2D []contacts = c.contacts;
		foreach(ContactPoint2D contactPoint in contacts) {
			//Debug.Log("p: "+contactPoint.point.y+"  -  py: "+transform.position.y);
			float yd = (transform.position.y-contactPoint.point.y);
			//Debug.Log(yd);
			float spriteHeight = 0.38f * Mathf.Abs(transform.localScale.x);
			if((yd)<spriteHeight) {
				direction = -direction;
				transform.position -= Mathf.Abs(transform.localScale.x) * direction * Time.deltaTime * Vector3.left;
				//Debug.Log("TURN AROUND");
			}
			//if(contactPoint.point.y>transform.position.y)
			//	direction = -direction;
		}

		//direction = -direction;
		//if(c.collider.CompareTag("Wall")) direction = -direction;
		if(c.collider.CompareTag("Player")) {
			// Hit player, makes him drop metal
			//player.HurtMetal(5);

			//player.Hurt(35);
		}

		if(c.collider.CompareTag("Bullet")) {
			// Hit by bullet
			Bullet b = c.collider.GetComponent<Bullet>() as Bullet;
			b.Hit(this);
			Debug.Log("bullet hit enenmy in OnCollisionEnter2D");
		}
	}

	public void FreezeForSecs(float secs) {
		secsToFreeze=secs;
		StartCoroutine(FreezeForTime());
	}

	IEnumerator FreezeForTime() {
		StopCoroutine("FreezeForTime");
		freeze = true;
		sr.color = new Color(0,0,255);
		yield return new WaitForSeconds(secsToFreeze);
		freeze = false;
		sr.color = new Color(255,255,255);
		yield return null;
	}

	IEnumerator Decolor() {
		yield return new WaitForSeconds(0.1f);
		sr.color = Color.white;
		tkanim.Sprite.color = Color.white;
		yield return null;
	}

	public void Deactivate() {
		freeze = true;
		StopAllCoroutines();
	}

	public void Activate() {
		freeze = false;
	}

	public void Hurt(int amount) {
		sr.color = Color.red;
		tkanim.Sprite.color = Color.red;
		StartCoroutine(Decolor());
		hp -= amount;
		if(hp<=0) {
			hp = 0;
			if(Random.Range(0,100)>=70) {
				// 30% chance of dropping anything at all

				// 20% chance of that drop being health
				if(Random.Range(0,100)<=20) {
					GameObject.Instantiate(heartPrefab, transform.position, Quaternion.identity);
				}
				else {
					// 80% chance of the drop being scra[
					GameObject.Instantiate(dropPrefab, transform.position, Quaternion.identity);
				}
			}
			player.DidKillEnemy();
			Destroy(gameObject);
		}
	}



}