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

public class sceneController : MonoBehaviour {

	public GameObject player1;
	public GameObject player2;
	public Camera cameraPlayer1;
	public Camera cameraPlayer2;
	public GameObject crossHairPlayer1;
	public GameObject crossHairPlayer2;
	public GameObject playerPointer;
	public Animator push;
	public Animator pull;

	public float screenAnimationTime;

	private thirdPersonController movementP1;
	private thirdPersonController movementP2;

	private bool activeP1 = true;
	private bool activeP2 = false;

	private string playerSwapInput = "playerSwap";


	// Call PlayerSound script to allow sounds upon button presses
	// NOTE: Make sure the SceneController's inspector has the PlayerAvatar
	// attached as an element under its script component.
	public PlayerSounds _playerSoundScript;




	// Use this for initialization
	void Start () {

		//Physics.IgnoreCollision(player1.GetComponent<Collider>(), player2.GetComponent<Collider>(),true);


		movementP1 = player1.GetComponent<thirdPersonController> ();
		movementP2 = player2.GetComponent<thirdPersonController> ();


		movementP2.active = false;

		crossHairPlayer2.SetActive (false);

		Component[] p1Colliders = player1.GetComponentsInChildren<Collider> ();
		Component[] p2Colliders = player2.GetComponentsInChildren<Collider> ();

		foreach (Collider p1Col in p1Colliders){
			foreach (Collider p2Col in p2Colliders){
				Physics.IgnoreCollision(p1Col, p2Col);
			}
		}


	
	}
	
	// Update is called once per frame
	void Update () {
		swapCharacters ();
		pointAtOther ();

		if (Input.GetKeyDown (KeyCode.R))
			Application.LoadLevel(Application.loadedLevel);

	}

	private void swapCharacters(){

		Camera newCamera;
		Camera oldCamera;

		if (Input.GetButtonDown(playerSwapInput)) {
			Debug.Log("swappy Swap");
			activeP1  = !activeP1;
			activeP2  = !activeP2;
			_playerSoundScript.PlaySwitch();  //Play "Switch Character" sound function


			if (activeP1){
				newCamera = cameraPlayer1;
				oldCamera = cameraPlayer2;
				crossHairPlayer1.SetActive(true);
				crossHairPlayer2.SetActive(false);
				pull.SetTrigger("appear");



			}else{
				newCamera = cameraPlayer2;
				oldCamera = cameraPlayer1;
				crossHairPlayer1.SetActive(false);
				crossHairPlayer2.SetActive(true);
				push.SetTrigger("appear");


			}

			movementP1.active = activeP1;
			movementP2.active = activeP2;

			newCamera.depth = 0;
			oldCamera.depth = 1;

			StartCoroutine(swapCameras (newCamera, oldCamera, screenAnimationTime));

			//newCamera.rect = new Rect (0.0f,0.0f,1.0f,1.0f);
			//oldCamera.rect = new Rect (0.84f, 0.74f, 0.155f, 0.25f);



		}



	}

	private void pointAtOther(){

		Transform target;
		Camera curCamera;


		if (movementP1.enabled) {
			target = player2.transform;
			curCamera = cameraPlayer1;
		} else {
			target = player1.transform;
			curCamera = cameraPlayer2;
		}

		Vector3 screenPos = curCamera.WorldToViewportPoint(target.position);
		Vector3 guiPos;

		//Debug.Log (screenPos);

		if (screenPos.x >= 0.0f && screenPos.x <= 1.0f && screenPos.y >= 0.0f && screenPos.y <= 1.0f) {
			guiPos = new Vector3 (screenPos.x * Screen.width, screenPos.y * Screen.height, 0.0f);
			playerPointer.transform.position = guiPos;
			return; // Object center is visible
		}

		//Debug.Log (screenPos);



		if (Mathf.Abs(screenPos.x-0.5f) > Mathf.Abs(screenPos.y-0.5f)) {
			screenPos.y = Mathf.Abs((screenPos.y));
			if (screenPos.x > 0.0f)
				screenPos.x = 1.0f;
			else
				screenPos.x = 0.0f;
		} else {
			screenPos.x = Mathf.Abs((screenPos.x));
			if (screenPos.y > 0.0f)
				screenPos.y = 1.0f;
			else
				screenPos.y = 0.0f;
		}

		guiPos = new Vector3 (screenPos.x * Screen.width, screenPos.y * Screen.height, 0.0f);

		//guiPos.x = Mathf.Clamp (guiPos.x, 0.0f, Screen.width);
		//guiPos.y = Mathf.Clamp (guiPos.y, 0.0f, Screen.height);

		playerPointer.transform.position = guiPos;
		
		
		
		
		
	}
	


	IEnumerator swapCameras (Camera newCamera, Camera oldCamera, float inTime){

		Rect tempNewRect = newCamera.rect;
		Rect tempOldRect = oldCamera.rect;


		for (float i = 0; i < 1; i+=Time.deltaTime/inTime) {

			tempNewRect.x = Mathf.Lerp (0.84f, 0.0f, i);
			tempNewRect.y = Mathf.Lerp (0.74f, 0.0f, i);
			tempNewRect.width = Mathf.Lerp (0.155f, 1.0f, i);
			tempNewRect.height = Mathf.Lerp (0.25f, 1.0f, i);

			tempOldRect.x = Mathf.Lerp (0.0f, 0.84f, i);
			tempOldRect.y = Mathf.Lerp (0.0f, 0.74f, i);
			tempOldRect.width = Mathf.Lerp (1.0f, 0.155f, i);
			tempOldRect.height = Mathf.Lerp (1.0f, 0.25f, i);

			newCamera.rect = tempNewRect;
			oldCamera.rect = tempOldRect;

			yield return null;
		}

		Debug.Log ("new rect: " + tempNewRect);

		newCamera.rect = new Rect (0.0f,0.0f,1.0f,1.0f);
		oldCamera.rect = new Rect (0.84f, 0.74f, 0.155f, 0.25f);


	}
	

}