using UnityEngine;

[AddComponentMenu("Camera-Control/Mouse Look")]
public class MouseLookAdvanced : MonoBehaviour
{
	public float sensitivityX = 5F;
	public float sensitivityY = 5F;

	public float minimumX = -360F;
	public float maximumX = 360F;

	public float minimumY = -90F;
	public float maximumY = 90F;
	
	public float smoothSpeed = 20F;

	float verticalAcceleration = 0f;
	
	float rotationX = 0F;
	float smoothRotationX = 0F;
	float rotationY = 0F;
	float smoothRotationY = 0F;
	Vector3 vMousePos;
	public float Speed = 100f;
	//bool bActive = false;
	
	void Start()
	{
		rotationY = -transform.localEulerAngles.x;
		rotationX = transform.localEulerAngles.y;
		smoothRotationX = transform.localEulerAngles.y;
		smoothRotationY = -transform.localEulerAngles.x;
	}

	bool IsCursorLock
	{
		get{ return Cursor.lockState == CursorLockMode.Locked; }
	    set {
	        Cursor.lockState = value ? CursorLockMode.Locked : CursorLockMode.None;
	    }
	}
    Vector3 sp, ep;
    float dist;
    bool capt = false, captRot = false;
	void FixedUpdate()
	{
        if(Input.touchCount > 0)
        {
            if(Input.touchCount == 1 && !captRot)
            {
                sp = Input.touches[0].position;
                captRot = true;
            }
            if(Input.touchCount == 1 && captRot)
            {
                Vector2 dir = (Vector2)sp - Input.touches[0].position;
                transform.Rotate(dir.normalized * 5);
            }
            if(captRot && (Input.touchCount == 0 ||Input.touches[0].phase == TouchPhase.Ended)){
                captRot = false;
            }
            if(Input.touchCount > 1 && !capt)
            {
                sp = Input.touches[0].position;
                ep = Input.touches[1].position;
                dist = Vector3.Distance(sp, ep);
                capt = true;
            }
            if (capt)
            {
                if(Input.touchCount == 0)
                {
                    capt = false;
                    return;
                }
                if(Input.touches[0].phase == TouchPhase.Ended)
                {
                    capt = false;
                    return;
                }
                float dist2 = Vector3.Distance(Input.touches[0].position, Input.touches[1].position);
                if(dist2 > dist)
                {
                    Vector3 inputM = new Vector3(0, 0, dist2 - dist);
                    Vector3 inputMove = transform.rotation * inputM;
                    transform.position += inputMove * Time.smoothDeltaTime;
                }
                if(dist2 < dist)
                {
                    Vector3 inputM = new Vector3(0, 0, (dist2 - dist));
                    Vector3 inputMove = transform.rotation * inputM;
                    transform.position += inputMove * Time.smoothDeltaTime;
                }
            }
            return;
        }
		verticalAcceleration = 0.0f;

		if (Input.GetMouseButtonDown (1)) {
		    IsCursorLock = !IsCursorLock;			
		}

		if (Input.GetKey(KeyCode.Space)) { verticalAcceleration = 1.0f; }
		if (Input.GetKey(KeyCode.LeftShift)) { verticalAcceleration = -1.0f; }


		if ( !IsCursorLock)
			return;

		rotationX += Input.GetAxis("Mouse X") * sensitivityX;
		rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
		rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);

		// smooth mouse look
		smoothRotationX += (rotationX - smoothRotationX) * smoothSpeed * Time.smoothDeltaTime;
		smoothRotationY += (rotationY - smoothRotationY) * smoothSpeed * Time.smoothDeltaTime;
		
		// transform camera to new direction
		transform.localEulerAngles = new Vector3(-smoothRotationY, smoothRotationX, 0);
		
		// handle camera movement via controller
		Vector3 inputMag = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
		Vector3 inputMoveDirection = transform.rotation * inputMag;
		transform.position += inputMoveDirection * Speed * Time.smoothDeltaTime;
		transform.position += new Vector3(0f, (Speed/2f) * verticalAcceleration * Time.smoothDeltaTime, 0);
		
		//transform.position += Vector3.up * (Input.GetAxis("VerticalOffset") * 10.0f * Time.smoothDeltaTime);
		transform.position += (transform.rotation * Vector3.forward) * Input.GetAxis("Mouse ScrollWheel") * 200.0f;
	}
}