using UnityEngine;
using System.Collections;

public class FreeCamera : MonoBehaviour {
	public bool freeLookEnabled = false;

	public float lookSpeed = 5f;
	public float moveSpeed = 5f;
	public float sprintSpeed = 50f;

	float m_yaw;
	float m_pitch;

	void Update () {
		if(!freeLookEnabled)
			return;

		m_yaw = (m_yaw + lookSpeed * Input.GetAxis("Mouse X")) % 360f;
		m_pitch = (m_pitch - lookSpeed * Input.GetAxis("Mouse Y")) % 360f;
		transform.rotation = Quaternion.AngleAxis(m_yaw, Vector3.up) * Quaternion.AngleAxis(m_pitch, Vector3.right);

		var speed = Time.deltaTime * (Input.GetKey(KeyCode.LeftShift) ? sprintSpeed : moveSpeed);
		var forward = speed * Input.GetAxis("Vertical");
		var right = speed * Input.GetAxis("Horizontal");
		var up = speed * ((Input.GetKey(KeyCode.Q) ? 1f : 0f) - (Input.GetKey(KeyCode.E) ? 1f : 0f));
		transform.position += transform.forward * forward + transform.right * right + Vector3.up * up;
	}
}