Fixed everything, added sound, etc.

FricaDeGaze/Assets/Scripts/AddSpider.cs

@@ -0,0 +1,34 @@
+using UnityEngine;
+using System.Collections;
+
+public class AddSpider : MonoBehaviour {
+
+	// Use this for initialization
+	public GameObject enemy;
+	public SpiderMove sc;
+
+	float randomInterval = 5.0f;
+	
+	IEnumerator Start() 
+	{
+		while(true)
+		{
+			yield return new WaitForSeconds(Random.Range(randomInterval, 2 * randomInterval));
+
+			if (randomInterval > .2f)
+				randomInterval -= randomInterval / 10;
+
+			Instantiate(enemy);
+			
+			float scale = Random.Range(.5f / randomInterval, .5f / randomInterval);
+
+			enemy.transform.position = new Vector3(-4, 0, -4);
+			enemy.transform.localScale = new Vector3(scale, scale, scale);
+		}
+	}
+	
+	// Update is called once per frame
+	void Update () {
+	
+	}
+}

FricaDeGaze/Assets/Scripts/AddSpider.cs.meta

@@ -0,0 +1,8 @@
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FricaDeGaze/Assets/Scripts/BallCollisionWithSpider.cs

@@ -0,0 +1,29 @@
+using UnityEngine;
+using System.Collections;
+
+public class BallCollisionWithSpider : MonoBehaviour {
+
+	public AudioSource SoundToPlay;
+
+	void OnTriggerEnter(Collider other)
+	{
+		if (other.gameObject.name.Contains ("Spider")) 
+		{
+			Destroy (gameObject);
+			Destroy (other.gameObject);
+
+			SoundToPlay.enabled = true;
+			SoundToPlay.Play ();
+		}
+	}
+
+	// Use this for initialization
+	void Start () {
+	
+	}
+	
+	// Update is called once per frame
+	void Update () {
+	
+	}
+}

FricaDeGaze/Assets/Scripts/BallCollisionWithSpider.cs.meta

@@ -0,0 +1,8 @@
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FricaDeGaze/Assets/Scripts/BallShoot.cs

@@ -0,0 +1,38 @@
+using UnityEngine;
+using System.Collections;
+
+public class BallShoot : MonoBehaviour {
+
+	public GameObject Ball;
+	public float ThrowSpeed = 10f;
+	public AudioSource ThrowSound;
+
+	private float LastThrowTime = 0;
+
+	// Use this for initialization
+	void Start () {
+		
+		Physics.gravity = new Vector3(0, -20, 0);
+	}
+	
+	// Update is called once per frame
+	void Update () {
+	
+		var direction = Camera.main.transform.forward;
+
+		if (Input.GetButton ("Fire1") && LastThrowTime + .05 < Time.timeSinceLevelLoad) 
+		{
+			// Throw ball
+			var ball = Instantiate(Ball) as GameObject;
+			ball.transform.position = Camera.main.transform.position + direction;
+			ball.rigidbody.AddForce(direction * ThrowSpeed, ForceMode.Impulse);
+
+			LastThrowTime = Time.timeSinceLevelLoad;
+
+			// Play sound
+			if (ThrowSound != null)
+				ThrowSound.Play();
+		}
+
+	}
+}

FricaDeGaze/Assets/Scripts/BallShoot.cs.meta

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FricaDeGaze/Assets/Scripts/SpiderMove.cs

@@ -0,0 +1,43 @@
+using UnityEngine;
+using System.Collections;
+
+public class SpiderMove : MonoBehaviour {
+
+	public float Speed;
+
+	Vector3 source;
+	Vector3 destination;
+
+	Vector3 generaterandom()
+	{
+		// Generate positions outside box
+		float x, z;
+		x = Random.Range(-4f, 4f);
+		z = -Random.Range(-4f, 4f);
+
+		return new Vector3 (x, .2f, z);
+	}
+
+	IEnumerator Start () {
+
+
+		source = generaterandom ();
+		destination = generaterandom ();
+
+		gameObject.transform.forward = destination - source;
+		gameObject.transform.position = source;
+
+		yield return null;
+	}
+	
+	// Update is called once per frame
+	void Update () 
+	{
+		gameObject.transform.position += gameObject.transform.forward * Speed;
+
+		if (Mathf.Abs(gameObject.transform.position.x) > 5f 
+		    || Mathf.Abs(gameObject.transform.position.y) > 5f
+		    || Mathf.Abs(gameObject.transform.position.z) > 5f)
+			Destroy (gameObject);
+	}
+}

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