Input System Overview: Button Queries, Analog Input, and Escape Override

protected override void OnUpdate()
{
    if ( Input.Down( "jump" ) )        // Key is held down (case insensitive)
        WorldPosition += Vector3.Forward * Time.Delta;

    if ( Input.Pressed( "jump" ) )     // Key was just pressed this frame
        Jump();

    if ( Input.Released( "jump" ) )    // Key was just released this frame
        EndJump();
}

Input.AnalogMove  // Joystick "move" Vector3 (or WASD)
Input.AnalogLook  // Joystick "look" Vector3 (mouse look)

protected override void OnUpdate()
{
    if ( Input.EscapePressed )
    {
        Input.EscapePressed = false;
        // Handle escape in your own menu system
    }
}