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engine/gameeventtransmitter.cpp

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+//======= Copyright (c) 1996-2009, Valve Corporation, All rights reserved. ======
+//
+//	Implementation of the CGameEventTransmitter class.
+//
+//
+//===============================================================================
+
+
+#include <tier0/vprof.h>
+#include "gameeventtransmitter.h"
+#include "net.h"
+#include "tier1/convar.h"
+#include "GameEventManager.h"
+#include "tier0/icommandline.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+static CGameEventTransmitter s_GameEventTransmitter;
+CGameEventTransmitter &g_GameEventTransmitter = s_GameEventTransmitter;
+
+//-----------------------------------------------------------------------------
+// Convar function to set the IP address and port.
+//-----------------------------------------------------------------------------
+void CC_TransmitEvents( const CCommand &args )
+{
+	if ( !g_GameEventTransmitter.SetIPAndPort( args.ArgS() ) )
+	{
+		if ( args.ArgC() > 1 )
+		{
+			Msg("Invalid address or port: %s\n", args.ArgS() );
+		}
+		else
+		{
+			Msg("No address and port passed in.\n" );
+		}
+	}
+	else
+	{
+		Msg("SUCCESS! address and port is now set to: %s\n", args.ArgS() );
+	}
+}
+static ConCommand TransmitEvents( "TransmitEvents", CC_TransmitEvents, "Transmits Game Events to <address:port>", FCVAR_DEVELOPMENTONLY );
+
+//-----------------------------------------------------------------------------
+// Initializes the network address based on IP and port
+//-----------------------------------------------------------------------------
+bool CGameEventTransmitter::SetIPAndPort( const char *address )
+{
+	m_Adr.SetFromString( address );
+	return m_Adr.IsValid();
+}
+
+//-----------------------------------------------------------------------------
+// Constructor
+//-----------------------------------------------------------------------------
+CGameEventTransmitter::CGameEventTransmitter()
+{
+	m_Adr.Clear();
+}
+
+//-----------------------------------------------------------------------------
+// Destructor
+//-----------------------------------------------------------------------------
+CGameEventTransmitter::~CGameEventTransmitter()
+{
+
+}
+
+//-----------------------------------------------------------------------------
+// Used to be able to set the IP address and port from the command line. 
+// This will be the primary way to initialize the system, so that uses 
+// won't have to enter the address/port during game play.
+//-----------------------------------------------------------------------------
+bool CGameEventTransmitter::Init()
+{
+	const char *address = CommandLine()->ParmValue( "-transmitevents", "" );
+	
+	if ( address[0] )
+	{
+		SetIPAndPort( address );
+	}
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// This function actually serializes the event data and sends it out on the network
+// to the address and port previously provided.
+//-----------------------------------------------------------------------------
+void CGameEventTransmitter::TransmitGameEvent( IGameEvent *event )
+{
+	// Don't bother doing anything if we don't have a transmit address, bad event, or a non-networked event
+	if ( !m_Adr.IsValid() || NULL == event || ( event && event->IsLocal() ) )
+	{
+		return;
+	}
+
+	CSVCMsg_GameEvent_t eventData;
+
+	// We send the event name instead of event ID becase the ID's can change depending on what the server sends to the clients
+	eventData.set_event_name( event->GetName() );
+
+	// create bitstream from KeyValues
+	if ( g_GameEventManager.SerializeEvent( event, &eventData ) )
+	{
+		bf_write buffer;
+		unsigned char buffer_data[MAX_EVENT_BYTES];
+
+		buffer.StartWriting( buffer_data, sizeof(buffer_data) );
+
+		eventData.WriteToBuffer( buffer );
+
+		NET_SendPacket( NULL, NS_CLIENT, m_Adr, buffer_data, buffer.GetNumBytesWritten() );		
+	}
+	else
+	{
+		DevMsg("GameEventTransmitter: failed to serialize event '%s'.\n", event->GetName() );
+	}
+}