using UnityEngine;

public class FirstPersonFlyingController : MonoBehaviour
{
	public float speed = 1f;

	public Transform cameraTransform;

	private Transform t;

	private Vector3 movementVectorSmooth;

	private Vector3 rotationVectorSmooth;

	public GameObject checkSphere;

	public bool dontRequireClick;

	public bool limitPosition;

	public Vector3 minPosition;

	public Vector3 maxPosition;

	private void Start()
	{
		t = GetComponent<Transform>();
	}

	private void Update()
	{
		Movement();
		MouseLook();
	}

	private void Movement()
	{
		Vector3 zero = Vector3.zero;
		if (Input.GetKey(KeyCode.W))
		{
			zero.z += 1f;
		}
		if (Input.GetKey(KeyCode.S))
		{
			zero.z -= 1f;
		}
		if (Input.GetKey(KeyCode.A))
		{
			zero.x -= 1f;
		}
		if (Input.GetKey(KeyCode.D))
		{
			zero.x += 1f;
		}
		if (Input.GetKey(KeyCode.Space))
		{
			zero.y += 1f;
		}
		if (Input.GetKey(KeyCode.LeftShift))
		{
			zero.y -= 1f;
		}
		zero = Vector3.Normalize(zero);
		movementVectorSmooth = Vector3.Lerp(movementVectorSmooth, zero, 5f * Time.deltaTime);
		t.Translate(movementVectorSmooth * 9f * Time.deltaTime * speed);
		if (limitPosition)
		{
			Vector3 position = t.position;
			position.x = Mathf.Clamp(position.x, minPosition.x, maxPosition.x);
			position.y = Mathf.Clamp(position.y, minPosition.y, maxPosition.y);
			position.z = Mathf.Clamp(position.z, minPosition.z, maxPosition.z);
			t.position = position;
		}
	}

	private void MouseLook()
	{
		Vector3 zero = Vector3.zero;
		if (Input.GetKey(KeyCode.Mouse0) || dontRequireClick)
		{
			zero.y += Input.GetAxis("Mouse X") * 1f;
			zero.x -= Input.GetAxis("Mouse Y") * 1f;
		}
		rotationVectorSmooth = Vector3.Lerp(rotationVectorSmooth, zero, 5f * Time.deltaTime);
		t.Rotate(new Vector3(0f, rotationVectorSmooth.y * 2f, 0f));
		cameraTransform.Rotate(Vector3.right * rotationVectorSmooth.x * 2f);
	}
}