public class Builder : MonoBehaviour {
    //Private vars
    private GameObject plane1;
    private GameObject plane2;
    private GameObject plane3;
    public GameObject obstacle;
    public GameObject coin;
    //Generates random vector3 within given range
    public Vector3 generateRandomVector(float xMin, float xMax, float zMin, float zMax){
        return new Vector3 (Random.Range (xMin,xMax),0,Random.Range (zMin,zMax)) ;
    }
    // Use this for initialization
    void Start () {
        plane1 = Resources.Load ("Plane1") as GameObject;
        plane2 = Resources.Load ("Plane2") as GameObject;
        plane3 = Resources.Load ("Plane3") as GameObject;
    }
    //Updates the position of the gameObject, this is the location where the next plane will be spawned
    public void updatePosition(){
        Vector3 newPosition = new Vector3 (gameObject.transform.position.x, gameObject.transform.position.y, gameObject.transform.position.z + 10);
        gameObject.transform.position = newPosition;
    }
    // This will pick up random plate and add the corresponding nnumber of other objects(coins, obstacles and powerups)
    public void generateTerrain(){
        if (Random.Range (0, 6) > 3) {
            //Clone the plane
            GameObject newPlate = Instantiate (plane3, transform.position, transform.rotation) as GameObject;
            //Generate objects
            generateObjects(newPlate, 7);

        } else if (Random.Range (0, 4) > 2) {
            //Clone the plane
            GameObject newPlate = Instantiate (plane2, transform.position, transform.rotation) as GameObject;
            //Generate objects
            generateObjects(newPlate, 5);
        } else {
            //Clone the plane
            GameObject newPlate = Instantiate (plane1, transform.position, transform.rotation) as GameObject;
            //Generate objects
            generateObjects(newPlate, 3);
        }
        //Updating the position so that the next element won't be on the same position as this one
        updatePosition();
    }
    //Generates obstales, coins and powerups
    public void generateObjects(GameObject parent, int numOfObjects){
        for(int i = 0; i < numOfObjects; i++){
            // Generate what kind of object will be spawned
            int rand = Random.Range (0, 10);
            //Generate random location within the parent
            float xMin, xMax,zMin,zMax;
            Renderer parentRenderer = parent.GetComponent<Renderer>();
            xMin = parentRenderer.bounds.min.x;
            zMin = parentRenderer.bounds.min.z;
            xMax =  parentRenderer.bounds.max.x;
            zMax =  parentRenderer.bounds.max.z;
            Vector3 pos = generateRandomVector(xMin, xMax, zMin, zMax);
            //TODO add powerups
            if(rand < 6){
                //Instantiate obstacle
                GameObject newObstale = Instantiate(obstacle, pos, parent.transform.rotation) as GameObject;
                newObstale.transform.parent = parent.transform;
            }else{
                //Instantiate coin
                GameObject newObstale = Instantiate(coin, pos, parent.transform.rotation) as GameObject;
                newObstale.transform.parent = parent.transform;
            }
        }
    }
}

public class PlayerTrigger : MonoBehaviour {
    private gameData gameDataInstance = new gameData();
    void OnTriggerEnter(Collider collider){
        if (collider.gameObject.tag == "Coin") {
            gameDataInstance.addCoins(1);
        }
        if (collider.gameObject.tag == "Obstacle") {
            Debug.Log ("Obstacle");
            //StorePersisten.storePersistenInstance.Save(gameDataInstance);
        }
        if (collider.gameObject.tag == "PowerUp") {
            // powerup
            Debug.Log("powerUp");
        }
    }
}

public class Destroyer : MonoBehaviour {
    private Builder builder;
    private bool isColliding;
    void Start() {
        builder = (Builder)FindObjectOfType(typeof(Builder));
        Debug.Log("Destroyer");
    }
    void Update(){
        isColliding = false;
    }
    void OnTriggerEnter(Collider collider){
        if (isColliding)
            return;
        isColliding = true;
        if (collider.gameObject.transform.parent != null) {
            Destroy (collider.gameObject.transform.parent.gameObject);
            Debug.Log ("Destroyed parent");
        } else {
            Destroy(collider.gameObject);
        }
        if (builder) {
            builder.generateTerrain ();
        }
    }
}