@Override
    public void writeDesc(MCDataOutput packet) {
        super.writeDesc(packet);
        packet.writeByte(gateState);
    }
Mapped inputs and outputs of the gate.
OOOO IIII
High nybble is output.
Low nybble is input
integration/src/main/java/mrtjp/projectred/integration/part/RedstoneGatePart.java