using UnityEngine;

namespace Gaia
{
	public class FreeCamera : MonoBehaviour
	{
		public bool enableInputCapture = true;

		public bool lockAndHideCursor;

		public bool holdRightMouseCapture = true;

		public float lookSpeed = 5f;

		public float moveSpeed = 5f;

		public float sprintSpeed = 50f;

		private bool m_inputCaptured;

		private float m_yaw;

		private float m_pitch;

		private void Awake()
		{
			base.enabled = enableInputCapture;
		}

		private void OnEnable()
		{
			if (enableInputCapture && !holdRightMouseCapture)
			{
				CaptureInput();
			}
		}

		private void OnDisable()
		{
			ReleaseInput();
		}

		private void OnValidate()
		{
			if (Application.isPlaying)
			{
				base.enabled = enableInputCapture;
			}
		}

		private void CaptureInput()
		{
			if (lockAndHideCursor)
			{
				Cursor.lockState = CursorLockMode.Locked;
				Cursor.visible = false;
			}
			m_inputCaptured = true;
			m_yaw = base.transform.eulerAngles.y;
			m_pitch = base.transform.eulerAngles.x;
		}

		private void ReleaseInput()
		{
			if (lockAndHideCursor)
			{
				Cursor.lockState = CursorLockMode.None;
				Cursor.visible = true;
			}
			m_inputCaptured = false;
		}

		private void OnApplicationFocus(bool focus)
		{
			if (m_inputCaptured && !focus)
			{
				ReleaseInput();
			}
		}

		private void Update()
		{
			if (!m_inputCaptured)
			{
				if (!holdRightMouseCapture && Input.GetMouseButtonDown(0))
				{
					CaptureInput();
				}
				else if (holdRightMouseCapture && Input.GetMouseButtonDown(1))
				{
					CaptureInput();
				}
			}
			if (!m_inputCaptured)
			{
				return;
			}
			if (m_inputCaptured)
			{
				if (!holdRightMouseCapture && Input.GetKeyDown(KeyCode.Escape))
				{
					ReleaseInput();
				}
				else if (holdRightMouseCapture && Input.GetMouseButtonUp(1))
				{
					ReleaseInput();
				}
			}
			float axis = Input.GetAxis("Mouse X");
			float axis2 = Input.GetAxis("Mouse Y");
			m_yaw = (m_yaw + lookSpeed * axis) % 360f;
			m_pitch = (m_pitch - lookSpeed * axis2) % 360f;
			base.transform.rotation = Quaternion.AngleAxis(m_yaw, Vector3.up) * Quaternion.AngleAxis(m_pitch, Vector3.right);
			float num = Time.deltaTime * (Input.GetKey(KeyCode.LeftShift) ? sprintSpeed : moveSpeed);
			float num2 = num * Input.GetAxis("Vertical");
			float num3 = num * Input.GetAxis("Horizontal");
			float num4 = num * ((Input.GetKey(KeyCode.E) ? 1f : 0f) - (Input.GetKey(KeyCode.Q) ? 1f : 0f));
			base.transform.position += base.transform.forward * num2 + base.transform.right * num3 + Vector3.up * num4;
		}
	}
}