private string ReadString(BitStream bitStream, DataTableProperty dataTableProperty)
{
int length = (int)bitStream.ReadBits(9);
string result = bitStream.ReadString(length);
return result;
}
private float ReadFloat(BitStream bitStream, DataTableProperty dataTableProperty)
{
float result = 0.0f;
if (ReadSpecialFloat(bitStream, dataTableProperty, out result))
{
return result;
}
ulong interp = bitStream.ReadBits(dataTableProperty.NumberOfBits);
result = (float)interp / ((1 << dataTableProperty.NumberOfBits) - 1);
result = dataTableProperty.LowValue + (dataTableProperty.HighValue - dataTableProperty.LowValue) * result;
return result;
}
private int ReadInt32(BitStream bitStream, DataTableProperty dataTableProperty)
{
if (dataTableProperty.Flags.HasFlag(DataTablePropertyFlags.Varint))
{
if (dataTableProperty.Flags.HasFlag(DataTablePropertyFlags.Unsigned))
{
return (int)bitStream.ReadVarint32();
}
else
{
return (int)bitStream.ReadVarint32();
}
}
else
{
if (dataTableProperty.Flags.HasFlag(DataTablePropertyFlags.Unsigned))
{
return (int)bitStream.ReadBits(dataTableProperty.NumberOfBits);
}
else
{
return (int)bitStream.ReadBits(dataTableProperty.NumberOfBits);
}
}
}
private float ReadBitCoordMP(BitStream bitStream, bool isIntegral, bool isLowPrecision)
{
float value = 0;
bool isNegative = false;
int integerValue = 0;
int fractionValue = 0;
bool inBounds = bitStream.ReadBit();
if (isIntegral)
{
integerValue = bitStream.ReadBit() ? 1 : 0;
if (integerValue == 1)
{
isNegative = bitStream.ReadBit();
if (inBounds)
{
value = (float)(bitStream.ReadBits(11) + 1);
}
else
{
value = (float)(bitStream.ReadBits(14) + 1);
}
}
}
else
{
integerValue = bitStream.ReadBit() ? 1 : 0;
isNegative = bitStream.ReadBit();
if (integerValue == 1)
{
if (inBounds)
{
value = (float)(bitStream.ReadBits(11) + 1);
}
else
{
value = (float)(bitStream.ReadBits(14) + 1);
}
}
fractionValue = (int)bitStream.ReadBits(isLowPrecision ? 3 : 5);
value = integerValue + ((float)fractionValue * (isLowPrecision ? HL2SDK.COORD_RESOLUTION_LOWPRECISION : HL2SDK.COORD_RESOLUTION));
}
if (isNegative)
{
value = -value;
}
return value;
}
private float ReadBitNormal(BitStream bitStream)
{
bool isNegative = bitStream.ReadBit();
uint fractionValue = bitStream.ReadBits(HL2SDK.NORMAL_FRACTIONAL_BITS);
float value = (float)fractionValue * HL2SDK.NORMAL_RESOLUTION;
if (isNegative)
{
value = -value;
}
return value;
}
private float ReadBitCoord(BitStream bitStream)
{
float value = 0;
bool isNegative = false;
int integerValue = (int)bitStream.ReadBits(1);
int fractionValue = (int)bitStream.ReadBits(1);
if ((integerValue | fractionValue) != 0)
{
isNegative = bitStream.ReadBit();
if (integerValue == 1)
{
integerValue = (int)bitStream.ReadBits(14) + 1;
}
if (fractionValue == 1)
{
fractionValue = (int)bitStream.ReadBits(HL2SDK.COORD_FRACTIONAL_BITS);
}
value = integerValue + ((float)fractionValue * HL2SDK.COORD_RESOLUTION);
}
if (isNegative)
{
value = -value;
}
return value;
}
private float ReadBitCellCoord(BitStream bitStream, int numberOfBits, bool isIntegral, bool isLowPrecision)
{
float value = 0.0f;
int integerValue = 0;
int fractionValue = 0;
if (isIntegral)
{
value = (float)bitStream.ReadBits(numberOfBits);
}
else
{
integerValue = (int)bitStream.ReadBits(numberOfBits);
fractionValue = (int)bitStream.ReadBits(isLowPrecision ? HL2SDK.COORD_FRACTIONAL_BITS_MP_LOWPRECISION : HL2SDK.COORD_FRACTIONAL_BITS);
value = integerValue + ((float)fractionValue * (isLowPrecision ? HL2SDK.COORD_RESOLUTION_LOWPRECISION : HL2SDK.COORD_RESOLUTION));
}
return value;
}
private object[] ReadArray(BitStream bitStream, ServerClassProperty serverClassProperty)
{
int numberOfElements = serverClassProperty.DataTableProperty.NumberOfElements;
int maxElements = numberOfElements;
int numberOfBits = 1;
while ((maxElements >>= 1) != 0)
{
numberOfBits++;
}
int count = (int)bitStream.ReadBits(numberOfBits);
object[] result = new object[count];
ServerClassProperty intermediaryServerClassProperty = new ServerClassProperty("", serverClassProperty.ArrayElementProperty, null);
for (int i = 0; i < count; i++)
{
result[i] = ReadServerClassProperty(bitStream, intermediaryServerClassProperty);
}
return result;
}
private void PacketEntities(byte[] packetBuffer)
{
PacketEntities packetEntitys = new PacketEntities(packetBuffer);
BitStream bitStream = new BitStream(packetEntitys.EntityData);
int entityIndex = -1;
EntityHeaderFlags entityHeaderFlags = EntityHeaderFlags.FHDR_ZERO;
EntityUpdateType entityUpdateType = EntityUpdateType.PreserveEnt;
bool isDelta = packetEntitys.IsDelta;
int lastEntityIndex = -1;
int updatedEntries = packetEntitys.UpdatedEntries;
while (entityUpdateType < EntityUpdateType.Finished)
{
updatedEntries--;
bool isEntity = (updatedEntries >= 0) ? true : false;
if (isEntity)
{
entityHeaderFlags = EntityHeaderFlags.FHDR_ZERO;
entityIndex = (int)(bitStream.ReadUBitInt() + lastEntityIndex + 1);
lastEntityIndex = entityIndex;
if (!bitStream.ReadBit())
{
if (bitStream.ReadBit())
{
entityHeaderFlags |= EntityHeaderFlags.FHDR_ENTERPVS;
}
}
else
{
entityHeaderFlags |= EntityHeaderFlags.FHDR_LEAVEPVS;
if (bitStream.ReadBit())
{
entityHeaderFlags |= EntityHeaderFlags.FHDR_DELETE;
}
}
}
for (entityUpdateType = EntityUpdateType.PreserveEnt; entityUpdateType == EntityUpdateType.PreserveEnt;)
{
if (!isEntity || entityIndex > HL2SDK.ENTITY_SENTINEL)
{
entityUpdateType = EntityUpdateType.Finished;
}
else
{
if (entityHeaderFlags.HasFlag(EntityHeaderFlags.FHDR_ENTERPVS))
{
entityUpdateType = EntityUpdateType.EnterPVS;
}
else if (entityHeaderFlags.HasFlag(EntityHeaderFlags.FHDR_LEAVEPVS))
{
entityUpdateType = EntityUpdateType.LeavePVS;
}
else
{
entityUpdateType = EntityUpdateType.DeltaEnt;
}
}
switch (entityUpdateType)
{
case EntityUpdateType.DeltaEnt:
{
Entity entity = m_Demo.Entities.GetEntity(entityIndex);
if (entity != null)
{
entity.Update(bitStream, true);
}
else
{
Console.WriteLine("EntityUpdateType.DeltaEnt: entity == null");
throw new Exception("EntityUpdateType.DeltaEnt: entity == null");
}
break;
}
case EntityUpdateType.EnterPVS:
{
uint serverClassID = bitStream.ReadBits((int)Math.Ceiling(Math.Log(m_Demo.ServerClasses.Count, 2)));
uint seiral = bitStream.ReadBits(10);
ServerClass serverClass = m_Demo.ServerClasses.GetServerClass((int)serverClassID);
Entity entity = new Entity(m_Demo, entityIndex, seiral, serverClass);
entity.Update(bitStream, false);
m_Demo.Entities.Add(entity);
break;
}
case EntityUpdateType.LeavePVS:
{
if (!isDelta)
{
Console.WriteLine("WARNING: EntityUpdateType.LeavePVS on Full Update");
entityUpdateType = EntityUpdateType.Failed;
throw new Exception("WARNING: EntityUpdateType.LeavePVS on Full Update");
}
else
{
m_Demo.Entities.Remove(entityIndex);
}
break;
}
case EntityUpdateType.PreserveEnt:
{
if (!isDelta)
{
Console.WriteLine("WARNING: EntityUpdateType.PreserveEnt on Full Update");
entityUpdateType = EntityUpdateType.Failed;
throw new Exception("WARNING: EntityUpdateType.PreserveEnt on Full Update");
}
else
{
if (entityIndex >= HL2SDK.MAX_EDICTS)
{
Console.WriteLine("EntityUpdateType.PreserveEnt: entityIndex == MAX_EDICTS");
throw new Exception("EntityUpdateType.PreserveEnt: entityIndex == MAX_EDICTS");
}
else
{
}
}
break;
}
}
}
}
}
private void Update(BitStream bitStream, string tableName, int tableFlags, int numberOfEntries, int maxEntries, int userDataSize, int userDataSizeInBits, bool userDataIsFixedSize)
{
bool encodeUsingDictionaries = bitStream.ReadBit();
if (encodeUsingDictionaries)
{
Console.WriteLine("Cannot Decode StringTable Update");
return;
}
List<String> entryHistory = new List<String>();
int lastEntriesIndex = -1;
for (int i = 0; i < numberOfEntries; i++)
{
int entryIndex = lastEntriesIndex + 1;
int entryLength = (int)Math.Log(maxEntries, 2);
if (!bitStream.ReadBit())
{
entryIndex = (int)bitStream.ReadBits(entryLength);
}
lastEntriesIndex = entryIndex;
if (entryIndex < 0 || entryIndex >= maxEntries)
{
Console.WriteLine("Invalid StringTableEntry Index");
return;
}
string entryName = "";
if (bitStream.ReadBit())
{
bool substringCheck = bitStream.ReadBit();
if (substringCheck)
{
int index = (int)bitStream.ReadBits(5);
int bytesToCopy = (int)bitStream.ReadBits(5);
entryName = entryHistory[index].Substring(0, bytesToCopy);
entryName += bitStream.ReadString();
}
else
{
entryName = bitStream.ReadString();
}
}
if (entryHistory.Count > 31)
{
entryHistory.RemoveAt(0);
}
entryHistory.Add(entryName);
byte[] entryData = null;
if (bitStream.ReadBit())
{
if (userDataIsFixedSize)
{
entryData = bitStream.ReadBitsToArray(userDataSizeInBits);
}
else
{
int bytesToRead = (int)bitStream.ReadBits(14);
entryData = bitStream.ReadBytes(bytesToRead);
}
}
StringTableEntry stringTableEntry = new StringTableEntry(entryName, entryIndex, entryData);
Add(tableName, stringTableEntry);
}
}