Use Input System with Cinemachine

For more complex input configurations like supporting multiple devices, you will need to receive inputs from the PlayerInput component provided by the Input System package. The following section assumes you already know how to setup this component. For more information, see the Input System documentation and samples.

Read from PlayerInput

To read values from a PlayerInput with a behaviour set to InvokeCSharpEvents, you need to create a custom InputAxisController that subscribes to onActionTriggered. The example below shows how to receive and wire those inputs accordingly. Add this script to your CinemachineCamera and assign the PlayerInput field.

using System;
using UnityEngine;
using UnityEngine.InputSystem;
using Unity.Cinemachine;

// This class receives input from a PlayerInput component and disptaches it
// to the appropriate Cinemachine InputAxis.  The playerInput component should
// be on the same GameObject, or specified in the PlayerInput field.
class CustomInputHandler : InputAxisControllerBase<CustomInputHandler.Reader>
{
    [Header("Input Source Override")]
    public PlayerInput PlayerInput;

    void Awake()
    {
        // When the PlayerInput receives an input, send it to all the controllers
        if (PlayerInput == null)
            TryGetComponent(out PlayerInput);
        if (PlayerInput == null)
            Debug.LogError("Cannot find PlayerInput component");
        else
        {
            PlayerInput.notificationBehavior = PlayerNotifications.InvokeCSharpEvents;
            PlayerInput.onActionTriggered += (value) =>
            {
                for (var i = 0; i < Controllers.Count; i++)
                    Controllers[i].Input.ProcessInput(value.action);
            };
        }
    }

    // We process user input on the Update clock
    void Update()
    {
        if (Application.isPlaying)
            UpdateControllers();
    }

    // Controllers will be instances of this class.
    [Serializable]
    public class Reader : IInputAxisReader
    {
        public InputActionReference Input;
        Vector2 m_Value; // the cached value of the input

        public void ProcessInput(InputAction action)
        {
            // If it's my action then cache the new value
            if (Input != null && Input.action.id == action.id)
            {
                if (action.expectedControlType == "Vector2")
                    m_Value = action.ReadValue<Vector2>();
                else
                    m_Value.x = m_Value.y = action.ReadValue<float>();
            }
        }

        // IInputAxisReader interface: Called by the framework to read the input value
        public float GetValue(UnityEngine.Object context, IInputAxisOwner.AxisDescriptor.Hints hint)
        {
            return (hint == IInputAxisOwner.AxisDescriptor.Hints.Y ? m_Value.y : m_Value.x);
        }
    }
}

For more information, see the Cinemachine Multiple Camera documentation and example if you need to dynamically instantiate cameras.