We got fast fuckers now

Assets/Scripts C#/GameState.cs

@@ -7,11 +7,13 @@ public class GameState : MonoBehaviour
 	public GameObject shop;
 	public GameObject ratbot;
 	public GameObject gunThrower;
+	public GameObject fastFucker;
 
-	int[] counts = new int[2];
+	int[] counts = new int[3];
 	enum CountIndex : uint {
 		ratbot = 0,
-		gunThrower = 1
+		gunThrower = 1,
+		fastFucker = 2
 	}
 
 	void Start() {
@@ -52,6 +54,7 @@ public class GameState : MonoBehaviour
 		for (uint _ = 0; _ <= wave; _++) {
 			GameObject newRatbot = Instantiate(
 				SpawnRatbot(),
+				// Spawn ratbots in a circle around the player
 				Random.insideUnitCircle.normalized*20
 				+ new Vector2 (
 					playerPosition.x,
@@ -59,6 +62,8 @@ public class GameState : MonoBehaviour
 				),
 				Quaternion.identity
 			);
+			// Set ratbot damageStrength and health
+			// TODO: set speed
 			newRatbot.GetComponent<Ratbot>().damageStrength 
 				= 5+wave*5;
 			newRatbot.GetComponent<Ratbot>().health = 5+wave*2;
@@ -66,12 +71,19 @@ public class GameState : MonoBehaviour
 		wave++;
 	}
 	public GameObject SpawnRatbot() {
+		// TODO: Convert this mess into a switch case
 		if (counts[(uint)CountIndex.gunThrower] < wave/3 
 			&& wave > 3
 		) {
 			counts[(uint)CountIndex.gunThrower]++;
 			return gunThrower;
 		}
+		if (counts[(uint)CountIndex.fastFucker] < wave/4 
+			&& wave > 2
+		) {
+			counts[(uint)CountIndex.fastFucker]++;
+			return fastFucker;
+		}
 		return ratbot;
 	}
 }

Assets/Scripts C#/Ratbots/FastFucker.cs

@@ -0,0 +1,30 @@
+using UnityEngine;
+using System.Collections;
+
+public class FastFucker : Ratbot
+{
+	bool attack = true;
+	void Update() {
+		if (attack)
+			MoveTowardsPlayer(moveSpeed*3);
+		else
+			MoveAwayFromPlayer(moveSpeed);
+    }
+	void MoveAwayFromPlayer(float speed) {
+		controller.AddRelativeForce(
+			(transform.position - player.transform.position)
+				.normalized
+			*speed
+			*Time.deltaTime
+		);
+	}
+	new void OnCollisionStay2D (Collision2D collision) {
+		base.OnCollisionStay2D(collision);
+		StartCoroutine("RunAway");
+	}
+	IEnumerator RunAway() {
+		attack = false;
+		yield return new WaitForSeconds (1F);
+		attack = true;
+	}
+}

Assets/Scripts C#/Ratbots/FastFucker.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 07603fdf7ab38f05493e2a22ef5cae06

Assets/Scripts C#/Ratbots/Ratbot.cs

@@ -10,28 +10,33 @@ public class Ratbot : MonoBehaviour
 
 	public static GameState gameState;
 	public static GameObject player;
+	public Rigidbody2D controller;
 
     void Start() {
 		SetVars();
     }
 
 	public void SetVars() {
+		controller = GetComponent<Rigidbody2D>();
 		// Set gameState and player objects
 		player = GameObject.FindGameObjectWithTag("Player");
 		gameState = GameObject.FindGameObjectWithTag("GameController").GetComponent<GameState>();
 	}
 
     void Update() {
-		MoveTowardsPlayer();
+		MoveTowardsPlayer(moveSpeed);
     }
 
-	public void MoveTowardsPlayer() {
-		Rigidbody2D controller = GetComponent<Rigidbody2D>();
-		Vector2 direction = (player.transform.position - transform.position).normalized;
-		controller.AddRelativeForce(direction*moveSpeed*Time.deltaTime);
+	public void MoveTowardsPlayer(float speed) {
+		controller.AddRelativeForce(
+			(player.transform.position - transform.position)
+				.normalized
+			*speed
+			*Time.deltaTime
+		);
 	}
 
-	void OnCollisionStay2D(Collision2D collision) {
+	public virtual void OnCollisionStay2D(Collision2D collision) {
 		// Deal damage when colliding with the player on a 0.5 second cooldown
 		if (collision.gameObject.tag != "Player") return;
 		if (lastDamageTime > Time.fixedTime-damageTimeoutSeconds) return;