New Input System

Setup

Using the default configuration for a keyboard&mouse / Gamepad Input Actions asset in unity, we can implement universal controls given various input devices.

Issues getting an input device to work? Click Window->Analysis->Input Debugger and at the top-left of the new window select Options->Add Devices Not Listed in 'Supported Devices' and any input device that was not previously working should now be passing input to unity.

This was a weird bug for me to figure out, so I thought it was worth a mention. For me, I had to do this in order to get Unity to accept input from my Corsair gaming mouse. I searched up a lot of information on this new input system thinking I was using it wrong, and later found that my mouse was not passing input to unity and my code was correct.

Use

We can call a specific function from a specific component

Using PlayerInput component->Behavior->Invoke Unity Events -

  Rigidbody playerRigidbody;
  public PlayerControls controls;
  Vector2 playerVelocity;
  public float playerSpeed = 5.0f;

  void Awake() {
    playerRigidbody = GetComponent<Rigidbody>();
    controls = new PlayerControls();
  }

  void OnEnable() {
    controls.Player.Enable();
  }

  void OnDisable() {
    controls.Player.Disable();
  }

  public void OnMove(InputAction.CallbackContext context) {
    print("Moving: " + context.ReadValue<Vector2>());
    playerVelocity = context.ReadValue<Vector2>();
  }
  
  public void OnLook(InputAction.CallbackContext context) {
    print("Look: " + context.ReadValue<Vector2>());
  }
  
  public void OnFire(InputAction.CallbackContext context) {
    print("Bang");
  }

  void Update()
  {
    playerRigidbody.position += new Vector3(playerVelocity.x * Time.deltaTime * playerSpeed,
      0,
      playerVelocity.y * Time.deltaTime * playerSpeed);
  }

Or we can let Unity call functions defined using the naming convention void On\[ActionName\](InputValue value)

Using PlayerInput component->Behavior->Send Messages -

  Rigidbody playerRigidbody;
  public PlayerControls controls;
  Vector2 playerVelocity;
  public float playerSpeed = 5.0f;


  void Awake() {
    playerRigidbody = GetComponent<Rigidbody>();
    controls = new PlayerControls();
  }

  void OnEnable() {
    controls.Player.Enable();
  }

  void OnDisable() {
    controls.Player.Disable();
  }

  public void OnMove(InputValue value) {
    playerVelocity = value.Get<Vector2>();
    print("Moving: " + value.Get<Vector2>());
  }


  public void OnMove(InputValue value) {
    playerVelocity = value.Get<Vector2>();
    print("Moving: " + value.Get<Vector2>());
  }


  void Update()
  {
    playerRigidbody.position += new Vector3(playerVelocity.x * Time.deltaTime * playerSpeed,
      0,
      playerVelocity.y * Time.deltaTime * playerSpeed);
  }

Broadcast messages is the same as Send Messages, except broadcasting invokes the same methods on all child objects who have a component with function definitions that match this naming convention.