private void MessageDeltaPacketEntities()
{
if (!demo.ConvertNetworkProtocol() || demo.IsBetaSteam())
{
parser.MessageDeltaPacketEntities();
return;
}
Int32 messageStartOffset = parser.BitBuffer.CurrentByte;
BitWriter bitWriter = new BitWriter();
// read message
bitWriter.WriteUInt16(parser.BitBuffer.ReadUInt16()); // nEntities/maxEntities
if (demo.NetworkProtocol <= 43)
{
parser.BitBuffer.Endian = BitBuffer.EndianType.Big;
}
bitWriter.WriteByte(parser.BitBuffer.ReadByte()); // delta sequence number
UInt32 entityNumber = 0;
while (true)
{
// check for footer
UInt16 footer = parser.BitBuffer.ReadUInt16();
if (footer == 0)
{
bitWriter.WriteUInt16(footer);
break;
}
parser.BitBuffer.SeekBits(-16);
// option bits
Boolean removeEntity = parser.BitBuffer.ReadBoolean();
bitWriter.WriteBoolean(removeEntity);
Boolean absoluteEntityNumber = parser.BitBuffer.ReadBoolean();
bitWriter.WriteBoolean(absoluteEntityNumber);
// entity number
if (absoluteEntityNumber)
{
entityNumber = parser.BitBuffer.ReadUnsignedBits(11);
bitWriter.WriteUnsignedBits(entityNumber, 11);
}
else
{
UInt32 deltaEntityNumber = parser.BitBuffer.ReadUnsignedBits(6);
bitWriter.WriteUnsignedBits(deltaEntityNumber, 6);
entityNumber += deltaEntityNumber;
}
if (!removeEntity)
{
// entity type
Boolean custom = parser.BitBuffer.ReadBoolean();
bitWriter.WriteBoolean(custom);
if (demo.NetworkProtocol <= 43)
{
parser.BitBuffer.SeekBits(1); // unknown, always 0
}
String entityType = "entity_state_t";
if (entityNumber > 0 && entityNumber <= demo.MaxClients)
{
entityType = "entity_state_player_t";
}
else if (custom)
{
entityType = "custom_entity_state_t";
}
// delta compressed data
Byte[] bitmaskBytes;
HalfLifeDeltaStructure deltaDecoder = parser.GetDeltaStructure(entityType);
HalfLifeDelta deltaEntity = deltaDecoder.CreateDelta();
deltaDecoder.ReadDelta(parser.BitBuffer, deltaEntity, out bitmaskBytes);
if (demo.Game != null)
{
demo.Game.ConvertPacketEntititiesCallback(deltaEntity, entityType, demo.GameVersion);
}
deltaDecoder.WriteDelta(bitWriter, deltaEntity, bitmaskBytes);
}
}
parser.BitBuffer.SkipRemainingBits();
parser.BitBuffer.Endian = BitBuffer.EndianType.Little;
// insert new message
ReWriteMessage(messageStartOffset, bitWriter.Data);
}