/// <summary>
/// Checks if the given <paramref name="packet"/>
/// can be used as the <see cref="CurrentPacket"/>.
/// </summary>
/// <param name="packet">Packet to check.</param>
/// <returns>True if the <paramref name="packet"/> can
/// be used, false if not.</returns>
private bool CanAcceptPacket(Packet packet)
{
if (CurrentPacket == null)
{
return(packet.Cargo <= MaxPacketSize);
}
else if (UpgradeContainer.ContainsUpdateOfType <CombinePacketUpgrade>())
{
return(packet.Cargo + CurrentPacket.Cargo <= MaxPacketSize);
}
else
{
return(false);
}
}
/// <summary>
/// Receives data from input ports
/// and sends data to output ports.
/// </summary>
public void Update()
{
if (CurrentPowerState == PowerState.Off)
{
return;
}
foreach (var port in _ports)
{
if (port.CurrentIOMode == IOMode.Input)
{
if (port.ReceiveBuffer != null)
{
if (CanAcceptPacket((Packet)port.ReceiveBuffer))
{
if (UpgradeContainer.ContainsUpdateOfType <CombinePacketUpgrade>())
{
CurrentPacket = CurrentPacket.Combine((Packet)port.CollectReceivedData());
}
else
{
CurrentPacket = (Packet)port.CollectReceivedData();
}
}
}
}
else if (port.CurrentIOMode == IOMode.Output)
{
if (CurrentPacket != null)
{
if (port.Send(CurrentPacket))
{
CurrentPacket = null;
}
}
}
}
}
