public static extern int XInputSetState(
int dwUserIndex, // [in] Index of the gamer associated with the device
ref XInputVibration pVibration // [in, out] The vibration information to send to the controller
);
public static void SetState(PlayerIndex playerIndex, double leftMotor, double rightMotor)
{
XInputVibration vibration = new XInputVibration() { LeftMotorSpeed = (ushort)(65535d * leftMotor), RightMotorSpeed = (ushort)(65535d * rightMotor) };
Imports.XInputSetState((int)playerIndex, ref vibration);
}