using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class CollisionScript : MonoBehaviour {
    public int scorePoints;
    public int healthAmount;
    public Text scoreUI;
    public Text health;
    public GameObject points;
    public GameObject player;
    public Camera mainCamera;
    public GameObject obstacle;
    public GameObject obstacle1;
    Vector3 randomPos;
    Vector3 randomPos2;
    Vector3 randomPos3;
    float speed = 1.0f;
    float obstacleSpeedX = 1.5f;
    float obstacleSpeedY = 1.5f;

    public void RandomFunction() {
        float screenX = Random.Range(2.0f, mainCamera.pixelWidth - 2.0f);
        float screenY = Random.Range(2.0f, mainCamera.pixelHeight - 2.0f);
        float screenZ = 10.0f;
        Vector3 position = mainCamera.ScreenToWorldPoint(new Vector3(screenX, screenY, screenZ));

        float screenX2 = Random.Range(4.0f, mainCamera.pixelWidth - 4.0f);
        float screenY2 = Random.Range(4.0f, mainCamera.pixelHeight - 4.0f);
        float screenZ2 = 10.0f;
        Vector3 position2 = mainCamera.ScreenToWorldPoint(new Vector3(screenX2, screenY2, screenZ2));

        float screenX3 = Random.Range(4.0f, mainCamera.pixelWidth - 4.0f);
        float screenY3 = Random.Range(4.0f, mainCamera.pixelHeight - 4.0f);
        float screenZ3 = 10.0f;
        Vector3 position3 = mainCamera.ScreenToWorldPoint(new Vector3(screenX3, screenY3, screenZ3));

        randomPos2 = position2;

        if (scorePoints == 1) {
            randomPos = position;
            randomPos3 = position3;
        }
    }

    void Start() {
        obstacle.SetActive (false);
        obstacle1.SetActive (false);
    }

    void Update() {
        if (scorePoints == 5) {
            obstacle.SetActive (true);
            obstacle.transform.position = randomPos;
        } else if (scorePoints == 10) {
            obstacle1.SetActive (true);
            obstacle1.transform.position = randomPos3;
        } else if (scorePoints >= 15) {
            obstacle.transform.position += Vector3.right * obstacleSpeedX * Time.deltaTime;
            obstacle1.transform.position += Vector3.up * obstacleSpeedY * Time.deltaTime;
        }

        if (obstacle.transform.position.x <= -8.9f) {
            obstacleSpeedX = 1.5f;
        }

        if (obstacle.transform.position.x >= 8.9f) {
            obstacleSpeedX = -1.5f;
        }

        if (obstacle1.transform.position.y <= -5.0f) {
            obstacleSpeedY = 1.5f;
        }

        if (obstacle1.transform.position.y >= 5.0f) {
            obstacleSpeedY = -1.5f;
        }

    }

    public void pointPosition() {
        points.transform.position = randomPos2;
    }
}

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class LethalCollisionScript : CollisionScript {

    void OnTriggerEnter2D(Collider2D coll) {
        healthAmount -= 1;
        player.transform.position = new Vector3(0,0,0);

        if (healthAmount >= 0) {
            health.text = "HEALTH: " + healthAmount;
        }

        if (healthAmount <= -1) {
            Application.LoadLevel (0);
        }
    }
}

using UnityEngine;
using System.Collections;

public class ObstacleScript : MonoBehaviour {

    // Update is called once per frame
    void Update () {
        transform.Rotate (new Vector3 (0, 0, 90) * Time.deltaTime * 2);
    }
}

using UnityEngine;
using System.Collections;

public class PlayerScript : MonoBehaviour {

    public float speed = 1.0f;
    public Camera mainCameraPS;

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        if (Input.GetKey (KeyCode.LeftArrow)) {
            transform.position += Vector3.left * speed * Time.deltaTime;
        }
        if (Input.GetKey (KeyCode.RightArrow)) {
            transform.position += Vector3.right * speed * Time.deltaTime;
        }
        if (Input.GetKey (KeyCode.UpArrow)) {
            transform.position += Vector3.up * speed * Time.deltaTime;
        }
        if (Input.GetKey (KeyCode.DownArrow)) {
            transform.position += Vector3.down * speed * Time.deltaTime;
        }

        if (transform.position.x <= -8.4f)
            transform.position = new Vector3 (-8.4f, transform.position.y, transform.position.z);
        else if (transform.position.x >= 8.4f)
            transform.position = new Vector3(8.4f, transform.position.y, transform.position.z);

        if (transform.position.y <= -4.6f)
            transform.position = new Vector3 (transform.position.x, -4.6f, transform.position.z);
        else if (transform.position.y >= 4.6f)
            transform.position = new Vector3 (transform.position.x, 4.6f, transform.position.z);
    }
}

using UnityEngine;
using System.Collections;

public class PointCollisionScript : CollisionScript {

    void OnTriggerEnter2D(Collider2D coll) {

        RandomFunction ();
        pointPosition ();

        scorePoints += 1;
        scoreUI.text = "SCORE: " + scorePoints.ToString ();
    }
}

public class GameController : MonoBehaviour
{
    public GameObject Player;
    public UIManager UIManager;

    void Awake()
    {
        Player = GameObject.FindWithTag("Player");
        UIManager = GameObject.FindObjectOfType<UIManager>();
    }
}

public class Some_of_Game_Scripts : MonoBehaviour
{
    GameController gameController;
    UIManager uiManager;

    void Start()
    {
        gameController = GameObject.FindWithTag("GameController");
        uiManager = gameController.UIManager;
    }

    void Update()
    {
        uiManager.SetStatusText_Or_Something("Some text");
        if (something)
            gameController.ResetGame();
    }
}