CameraManager.cs

using System;
using UnityEngine;
using Cinemachine;
using System.Collections;

public class CameraManager : MonoBehaviour
{
	[SerializeField] private UnityEventBusSO eventBus;

	public Camera mainCamera;
	public CinemachineFreeLook freeLookVCam;
	private bool _isRMBPressed;

	[SerializeField, Range(.5f, 3f)]
	private float _speedMultiplier = 1f; //TODO: make this modifiable in the game settings
	[SerializeField] private TransformAnchor _cameraTransformAnchor = default;

	[Header("Listening on channels")]
	[Tooltip("The CameraManager listens to this event, fired by objects in any scene, to adapt camera position")]
	[SerializeField] private TransformEventChannelSO _frameObjectChannel = default;


	private bool _cameraMovementLock = false;

	public void SetupProtagonistVirtualCamera(Transform target)
	{
		freeLookVCam.Follow = target;
		freeLookVCam.LookAt = target;
		freeLookVCam.OnTargetObjectWarped(target, target.position - freeLookVCam.transform.position - Vector3.forward);
	}

	private void OnEnable()
	{
		eventBus.Subscribe<CameraMoveEvent>(OnCameraMove);
		eventBus.Subscribe<EnableMouseControlEvent>(OnEnableMouseControlCamera);
		eventBus.Subscribe<DisableMouseControlEvent>(OnDisableMouseControlCamera);

		if (_frameObjectChannel != null)
			_frameObjectChannel.OnEventRaised += OnFrameObjectEvent;

		_cameraTransformAnchor.Transform = mainCamera.transform;
	}

	private void OnDisable()
	{
		eventBus.Unsubscribe<CameraMoveEvent>(OnCameraMove);
		eventBus.Unsubscribe<EnableMouseControlEvent>(OnEnableMouseControlCamera);
		eventBus.Unsubscribe<DisableMouseControlEvent>(OnDisableMouseControlCamera);

		if (_frameObjectChannel != null)
			_frameObjectChannel.OnEventRaised -= OnFrameObjectEvent;
	}

	private void OnEnableMouseControlCamera(EnableMouseControlEvent evt)
	{
		_isRMBPressed = true;

		Cursor.lockState = CursorLockMode.Locked;
		Cursor.visible = false;

		StartCoroutine(DisableMouseControlForFrame());
	}

	IEnumerator DisableMouseControlForFrame()
	{
		_cameraMovementLock = true;
		yield return new WaitForEndOfFrame();
		_cameraMovementLock = false;
	}

	private void OnDisableMouseControlCamera(DisableMouseControlEvent evt)
	{
		_isRMBPressed = false;

		Cursor.lockState = CursorLockMode.None;
		Cursor.visible = true;

		// when mouse control is disabled, the input needs to be cleared
		// or the last frame's input will 'stick' until the action is invoked again
		freeLookVCam.m_XAxis.m_InputAxisValue = 0;
		freeLookVCam.m_YAxis.m_InputAxisValue = 0;
	}

	private void OnCameraMove(CameraMoveEvent moveEvent)
	{
		if (_cameraMovementLock)
			return;

		if (moveEvent.IsDeviceMouse && !_isRMBPressed)
			return;

		freeLookVCam.m_XAxis.m_InputAxisValue = moveEvent.Movement.x * Time.deltaTime * _speedMultiplier;
		freeLookVCam.m_YAxis.m_InputAxisValue = moveEvent.Movement.y * Time.deltaTime * _speedMultiplier;
	}

	private void OnFrameObjectEvent(Transform value)
	{
		SetupProtagonistVirtualCamera(value);
	}
}