void UDemoNetDriver::FinishDestroy()
{
if ( !HasAnyFlags( RF_ClassDefaultObject ) )
{
// Make sure we stop any recording that might be going on
if ( ClientConnections.Num() > 0 )
{
StopDemo();
}
}
Super::FinishDestroy();
}
void UDemoNetDriver::TickDemoPlayback( float DeltaSeconds )
{
if ( ServerConnection == NULL || ServerConnection->State == USOCK_Closed )
{
StopDemo();
return;
}
DemoDeltaTime += DeltaSeconds;
while ( true )
{
// Read demo frames until we are caught up
if ( !ReadDemoFrame() )
{
break;
}
DemoFrameNum++;
}
}
bool UDemoNetDriver::ReadDemoFrame()
{
if ( FileAr->IsError() )
{
StopDemo();
return false;
}
if ( FileAr->AtEnd() || FileAr->Tell() >= EndOfStreamOffset )
{
bDemoPlaybackDone = true;
// Pause all non player controller actors
for ( int32 i = ServerConnection->OpenChannels.Num() - 1; i >= 0; i-- )
{
UChannel* OpenChannel = ServerConnection->OpenChannels[i];
if ( OpenChannel != NULL )
{
UActorChannel* ActorChannel = Cast< UActorChannel >( OpenChannel );
if ( ActorChannel != NULL && ActorChannel->GetActor() != NULL )
{
if ( Cast< APlayerController >( ActorChannel->GetActor() ) == NULL )
{
// Better way to pause each actor?
ActorChannel->GetActor()->CustomTimeDilation = 0.0f;
}
}
}
}
return false;
}
const int32 OldFilePos = FileAr->Tell();
float ServerDeltaTime;
// Peek at the next demo delta time, and see if we should process this frame
*FileAr << ServerDeltaTime;
#if DEMO_CHECKSUMS == 1
{
uint32 ServerDeltaTimeCheksum = 0;
*FileAr << ServerDeltaTimeCheksum;
const uint32 DeltaTimeChecksum = FCrc::MemCrc32( &ServerDeltaTime, sizeof( ServerDeltaTime ), 0 );
if ( DeltaTimeChecksum != ServerDeltaTimeCheksum )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: DeltaTimeChecksum != ServerDeltaTimeCheksum" ) );
StopDemo();
return false;
}
}
#endif
if ( FileAr->IsError() )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: Failed to read demo ServerDeltaTime" ) );
StopDemo();
return false;
}
if ( DemoDeltaTime < ServerDeltaTime )//&& ServerConnection->State != USOCK_Pending )
{
// Not enough time has passed to read another frame
FileAr->Seek( OldFilePos );
return false;
}
DemoDeltaTime -= ServerDeltaTime;
while ( true )
{
uint8 ReadBuffer[ MAX_DEMO_READ_WRITE_BUFFER ];
int32 PacketBytes;
*FileAr << PacketBytes;
if ( FileAr->IsError() )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: Failed to read demo PacketBytes" ) );
StopDemo();
return false;
}
if ( PacketBytes == 0 )
{
break;
}
if ( PacketBytes > sizeof( ReadBuffer ) )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: PacketBytes > sizeof( ReadBuffer )" ) );
StopDemo();
if ( World != NULL && World->GetGameInstance() != NULL )
{
World->GetGameInstance()->HandleDemoPlaybackFailure( EDemoPlayFailure::Generic, FString( TEXT( "UDemoNetDriver::ReadDemoFrame: PacketBytes > sizeof( ReadBuffer )" ) ) );
}
return false;
}
// Read data from file.
FileAr->Serialize( ReadBuffer, PacketBytes );
if ( FileAr->IsError() )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: Failed to read demo file packet" ) );
StopDemo();
return false;
}
#if DEMO_CHECKSUMS == 1
{
uint32 ServerChecksum = 0;
*FileAr << ServerChecksum;
const uint32 Checksum = FCrc::MemCrc32( ReadBuffer, PacketBytes, 0 );
if ( Checksum != ServerChecksum )
{
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: Checksum != ServerChecksum" ) );
StopDemo();
return false;
}
}
#endif
// Process incoming packet.
ServerConnection->ReceivedRawPacket( ReadBuffer, PacketBytes );
if ( ServerConnection == NULL || ServerConnection->State == USOCK_Closed )
{
// Something we received resulted in the demo being stopped
UE_LOG( LogDemo, Error, TEXT( "UDemoNetDriver::ReadDemoFrame: ReceivedRawPacket closed connection" ) );
StopDemo();
return false;
}
}
return true;
}
