Test/Library/PackageCache/com.unity.inputsystem@2436e68c60c4/Documentation~/step-3-update-method.md

uid

uid
input-system-step-3-update-method

Step 3 The Update method

You now have a Device in place along with its associated state format. You can call the following method to create a fully set-up Device with your two Controls on it:

InputSystem.AddDevice<MyDevice>();

However, this Device doesn't receive input yet, because you haven't added any code that generates input. To do that, you can use InputSystem.QueueStateEvent or InputSystem.QueueDeltaStateEvent from anywhere, including from a thread. The following example uses IInputUpdateCallbackReceiver, which, when implemented by any InputDevice, adds an OnUpdate() method that automatically gets called during InputSystem.onBeforeUpdate and provides input events to the current input update.

Note

If you already have a place where input for your device becomes available, you can skip this step and queue input events from there instead of using IInputUpdateCallbackReceiver.

public class MyDevice : InputDevice, IInputUpdateCallbackReceiver
{
    //...

    public void OnUpdate()
    {
        // In practice, this would read out data from an external
        // API. This example uses some empty input.
        var state = new MyDeviceState();
        InputSystem.QueueStateEvent(this, state);
    }
}