using UnityEngine;

namespace VolumetricFogAndMist
{
	public class FreeCameraMove : MonoBehaviour
	{
		public float cameraSensitivity = 150f;

		public float climbSpeed = 20f;

		public float normalMoveSpeed = 20f;

		public float slowMoveFactor = 0.25f;

		public float fastMoveFactor = 3f;

		private float rotationX;

		private float rotationY;

		private void Start()
		{
			Cursor.lockState = CursorLockMode.Locked;
		}

		private void Update()
		{
			Vector2 vector = Input.mousePosition;
			if (!(vector.x < 0f) && !(vector.x > (float)Screen.width) && !(vector.y < 0f) && !(vector.y > (float)Screen.height))
			{
				rotationX += Input.GetAxis("Mouse X") * cameraSensitivity * Time.deltaTime;
				rotationY += Input.GetAxis("Mouse Y") * cameraSensitivity * Time.deltaTime;
				rotationY = Mathf.Clamp(rotationY, -90f, 90f);
				base.transform.localRotation = Quaternion.AngleAxis(rotationX, Vector3.up);
				base.transform.localRotation *= Quaternion.AngleAxis(rotationY, Vector3.left);
				if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
				{
					base.transform.position += base.transform.forward * (normalMoveSpeed * fastMoveFactor) * Input.GetAxis("Vertical") * Time.deltaTime;
					base.transform.position += base.transform.right * (normalMoveSpeed * fastMoveFactor) * Input.GetAxis("Horizontal") * Time.deltaTime;
				}
				else if (Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.RightControl))
				{
					base.transform.position += base.transform.forward * (normalMoveSpeed * slowMoveFactor) * Input.GetAxis("Vertical") * Time.deltaTime;
					base.transform.position += base.transform.right * (normalMoveSpeed * slowMoveFactor) * Input.GetAxis("Horizontal") * Time.deltaTime;
				}
				else
				{
					base.transform.position += base.transform.forward * normalMoveSpeed * Input.GetAxis("Vertical") * Time.deltaTime;
					base.transform.position += base.transform.right * normalMoveSpeed * Input.GetAxis("Horizontal") * Time.deltaTime;
				}
				if (Input.GetKey(KeyCode.Q))
				{
					base.transform.position -= base.transform.up * climbSpeed * Time.deltaTime;
				}
				if (Input.GetKey(KeyCode.E))
				{
					base.transform.position += base.transform.up * climbSpeed * Time.deltaTime;
				}
			}
		}

		private void OnGUI()
		{
			Rect position = new Rect(10f, 10f, Screen.width - 20, 30f);
			GUI.Label(position, "Move camera around freely with WASD and mouse.");
		}
	}
}