/// <summary>
/// Remove an object with the specified unique identifier.
/// </summary>
public bool DestroyObject(uint objID)
{
if (objID < 32768)
{
// Static objects have ID below 32768
if (!destroyed.Contains(objID))
{
destroyed.Add(objID);
DestroyObjectRFCs(objID);
return(true);
}
}
else if (mCreatedObjectDictionary.Remove(objID))
{
// Dynamic objects are always a part of the 'created' array and the lookup table
for (int i = 0; i < created.size; ++i)
{
Channel.CreatedObject obj = created[i];
if (obj.objectID == objID)
{
if (obj.buffer != null)
{
obj.buffer.Recycle();
}
created.RemoveAt(i);
DestroyObjectRFCs(objID);
return(true);
}
}
}
return(false);
}
/// <summary>
/// Remove an object with the specified unique identifier.
/// </summary>
public bool DestroyObject(uint uniqueID)
{
if (!destroyed.Contains(uniqueID))
{
for (int i = 0; i < created.size; ++i)
{
Channel.CreatedObject obj = created[i];
if (obj.uniqueID == uniqueID)
{
if (obj.buffer != null)
{
obj.buffer.Recycle();
}
created.RemoveAt(i);
DestroyObjectRFCs(uniqueID);
return(true);
}
}
destroyed.Add(uniqueID);
DestroyObjectRFCs(uniqueID);
return(true);
}
return(false);
}
/// <summary>
/// Remove the specified player from the channel.
/// </summary>
public void RemovePlayer(TcpPlayer p, List <uint> destroyedObjects)
{
destroyedObjects.Clear();
if (players.Remove(p))
{
// When the host leaves, clear the host (it gets changed in SendLeaveChannel)
if (p == host)
{
host = null;
}
// Remove all of the non-persistent objects that were created by this player
for (int i = created.size; i > 0;)
{
Channel.CreatedObject obj = created[--i];
if (obj.playerID == p.id)
{
if (obj.type == 2)
{
if (obj.buffer != null)
{
obj.buffer.Recycle();
}
uint objID = obj.objectID;
created.RemoveAt(i);
destroyedObjects.Add(objID);
if (objID >= 32768)
{
mCreatedObjectDictionary.Remove(objID);
}
DestroyObjectRFCs(objID);
}
else if (players.size != 0)
{
// The same operation happens on the client as well
obj.playerID = players[0].id;
}
}
}
// Close the channel if it wasn't persistent
if ((!persistent || playerLimit < 1) && players.size == 0)
{
closed = true;
for (int i = 0; i < rfcs.size; ++i)
{
RFC r = rfcs[i];
if (r.data != null)
{
r.data.Recycle();
}
}
rfcs.Clear();
}
}
}
/// <summary>
/// Remove the specified player from the channel.
/// </summary>
public void RemovePlayer(TcpPlayer p, List <uint> destroyedObjects)
{
destroyedObjects.Clear();
if (p == host)
{
host = null;
}
if (players.Remove(p))
{
// Remove all of the non-persistent objects that were created by this player
for (int i = created.size; i > 0;)
{
Channel.CreatedObject obj = created[--i];
if (obj.type == 2 && obj.playerID == p.id)
{
if (obj.buffer != null)
{
obj.buffer.Recycle();
}
created.RemoveAt(i);
destroyedObjects.Add(obj.uniqueID);
DestroyObjectRFCs(obj.uniqueID);
}
}
// Close the channel if it wasn't persistent
if ((!persistent || playerLimit < 1) && players.size == 0)
{
closed = true;
for (int i = 0; i < rfcs.size; ++i)
{
RFC r = rfcs[i];
if (r.buffer != null)
{
r.buffer.Recycle();
}
}
rfcs.Clear();
}
}
}
/// <summary>
/// Channel joining process involves multiple steps. It's faster to perform them all at once.
/// </summary>
public void FinishJoiningChannel()
{
Buffer buffer = Buffer.Create();
// Step 2: Tell the player who else is in the channel
BinaryWriter writer = buffer.BeginPacket(Packet.ResponseJoiningChannel);
{
writer.Write(channel.id);
writer.Write((short)channel.players.size);
for (int i = 0; i < channel.players.size; ++i)
{
TcpPlayer tp = channel.players[i];
writer.Write(tp.id);
writer.Write(string.IsNullOrEmpty(tp.name) ? "Guest" : tp.name);
}
}
// End the first packet, but remember where it ended
int offset = buffer.EndPacket();
// Step 3: Inform the player of who is hosting
if (channel.host == null)
{
channel.host = this;
}
buffer.BeginPacket(Packet.ResponseSetHost, offset);
writer.Write(channel.host.id);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 4: Send the channel's data
if (!string.IsNullOrEmpty(channel.data))
{
buffer.BeginPacket(Packet.ResponseSetChannelData, offset);
writer.Write(channel.data);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 5: Inform the player of what level we're on
buffer.BeginPacket(Packet.ResponseLoadLevel, offset);
writer.Write(string.IsNullOrEmpty(channel.level) ? "" : channel.level);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 6: Send the list of objects that have been created
for (int i = 0; i < channel.created.size; ++i)
{
Channel.CreatedObject obj = channel.created.buffer[i];
buffer.BeginPacket(Packet.ResponseCreate, offset);
writer.Write(obj.playerID);
writer.Write(obj.objectID);
writer.Write(obj.uniqueID);
writer.Write(obj.buffer.buffer, obj.buffer.position, obj.buffer.size);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 7: Send the list of objects that have been destroyed
if (channel.destroyed.size != 0)
{
buffer.BeginPacket(Packet.ResponseDestroy, offset);
writer.Write((ushort)channel.destroyed.size);
for (int i = 0; i < channel.destroyed.size; ++i)
{
writer.Write(channel.destroyed.buffer[i]);
}
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 8: Send all buffered RFCs to the new player
for (int i = 0; i < channel.rfcs.size; ++i)
{
Buffer rfcBuff = channel.rfcs[i].buffer;
rfcBuff.BeginReading();
buffer.BeginWriting(offset);
writer.Write(rfcBuff.buffer, rfcBuff.position, rfcBuff.size);
offset = buffer.EndWriting();
}
// Step 9: The join process is now complete
buffer.BeginPacket(Packet.ResponseJoinChannel, offset);
writer.Write(true);
offset = buffer.EndTcpPacketStartingAt(offset);
// Send the entire buffer
SendTcpPacket(buffer);
buffer.Recycle();
}
/// <summary>
/// Channel joining process involves multiple steps. It's faster to perform them all at once.
/// </summary>
public void FinishJoiningChannel()
{
Buffer buffer = Buffer.Create();
// Step 2: Tell the player who else is in the channel
BinaryWriter writer = buffer.BeginPacket(Packet.ResponseJoiningChannel);
{
writer.Write(channel.id);
writer.Write((short)channel.players.size);
for (int i = 0; i < channel.players.size; ++i)
{
TcpPlayer tp = channel.players[i];
writer.Write(tp.id);
writer.Write(string.IsNullOrEmpty(tp.name) ? "Guest" : tp.name);
#if STANDALONE
if (tp.data == null)
{
writer.Write((byte)0);
}
else
{
writer.Write((byte[])tp.data);
}
#else
writer.WriteObject(tp.data);
#endif
}
}
// End the first packet, but remember where it ended
int offset = buffer.EndPacket();
// Step 3: Inform the player of who is hosting
if (channel.host == null)
{
channel.host = this;
}
buffer.BeginPacket(Packet.ResponseSetHost, offset);
writer.Write(channel.host.id);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 4: Send the channel's data
if (!string.IsNullOrEmpty(channel.data))
{
buffer.BeginPacket(Packet.ResponseSetChannelData, offset);
writer.Write(channel.data);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 5: Inform the player of what level we're on
buffer.BeginPacket(Packet.ResponseLoadLevel, offset);
writer.Write(string.IsNullOrEmpty(channel.level) ? "" : channel.level);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 6: Send the list of objects that have been created
for (int i = 0; i < channel.created.size; ++i)
{
Channel.CreatedObject obj = channel.created.buffer[i];
bool isPresent = false;
for (int b = 0; b < channel.players.size; ++b)
{
if (channel.players[b].id == obj.playerID)
{
isPresent = true;
break;
}
}
// If the previous owner is not present, transfer ownership to the host
if (!isPresent)
{
obj.playerID = channel.host.id;
}
buffer.BeginPacket(Packet.ResponseCreate, offset);
writer.Write(obj.playerID);
writer.Write(obj.objectIndex);
writer.Write(obj.objectID);
writer.Write(obj.buffer.buffer, obj.buffer.position, obj.buffer.size);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 7: Send the list of objects that have been destroyed
if (channel.destroyed.size != 0)
{
buffer.BeginPacket(Packet.ResponseDestroy, offset);
writer.Write((ushort)channel.destroyed.size);
for (int i = 0; i < channel.destroyed.size; ++i)
{
writer.Write(channel.destroyed.buffer[i]);
}
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 8: Send all buffered RFCs to the new player
for (int i = 0; i < channel.rfcs.size; ++i)
{
Channel.RFC rfc = channel.rfcs[i];
buffer.BeginWriting(offset);
writer.Write(rfc.buffer.buffer, 0, rfc.buffer.size);
offset = buffer.EndWriting();
}
// Step 9: The join process is now complete
buffer.BeginPacket(Packet.ResponseJoinChannel, offset);
writer.Write(true);
offset = buffer.EndTcpPacketStartingAt(offset);
// Send the entire buffer
SendTcpPacket(buffer);
buffer.Recycle();
}
/// <summary>
/// Process a packet from the player.
/// </summary>
void ProcessChannelPacket(TcpPlayer player, Buffer buffer, BinaryReader reader, Packet request)
{
switch (request)
{
case Packet.RequestCreate:
{
// Create a new object
ushort objectIndex = reader.ReadUInt16();
byte type = reader.ReadByte();
uint uniqueID = 0;
if (type != 0)
{
uniqueID = --player.channel.objectCounter;
// 1-32767 is reserved for existing scene objects.
// 32768 - 16777215 is for dynamically created objects.
if (uniqueID < 32768)
{
player.channel.objectCounter = 0xFFFFFF;
uniqueID = 0xFFFFFF;
}
Channel.CreatedObject obj = new Channel.CreatedObject();
obj.playerID = player.id;
obj.objectID = objectIndex;
obj.uniqueID = uniqueID;
obj.type = type;
if (buffer.size > 0)
{
obj.buffer = buffer;
buffer.MarkAsUsed();
}
player.channel.created.Add(obj);
}
// Inform the channel
BinaryWriter writer = BeginSend(Packet.ResponseCreate);
writer.Write(player.id);
writer.Write(objectIndex);
writer.Write(uniqueID);
if (buffer.size > 0)
{
writer.Write(buffer.buffer, buffer.position, buffer.size);
}
EndSend(true, player.channel, null);
break;
}
case Packet.RequestDestroy:
{
// Destroy the specified network object
uint uniqueID = reader.ReadUInt32();
// Remove this object
if (player.channel.DestroyObject(uniqueID))
{
// Inform all players in the channel that the object should be destroyed
BinaryWriter writer = BeginSend(Packet.ResponseDestroy);
writer.Write((ushort)1);
writer.Write(uniqueID);
EndSend(true, player.channel, null);
}
break;
}
case Packet.RequestLoadLevel:
{
// Change the currently loaded level
if (player.channel.host == player)
{
player.channel.Reset();
player.channel.level = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseLoadLevel);
writer.Write(string.IsNullOrEmpty(player.channel.level) ? "" : player.channel.level);
EndSend(true, player.channel, null);
}
break;
}
case Packet.RequestSetHost:
{
// Transfer the host state from one player to another
if (player.channel.host == player)
{
TcpPlayer newHost = GetPlayer(reader.ReadInt32());
if (newHost != null && newHost.channel == player.channel)
{
SendSetHost(newHost);
}
}
break;
}
case Packet.RequestLeaveChannel:
{
SendLeaveChannel(player, true);
break;
}
case Packet.RequestCloseChannel:
{
player.channel.persistent = false;
player.channel.closed = true;
break;
}
case Packet.RequestSetPlayerLimit:
{
player.channel.playerLimit = reader.ReadUInt16();
break;
}
case Packet.RequestRemoveRFC:
{
uint id = reader.ReadUInt32();
string funcName = ((id & 0xFF) == 0) ? reader.ReadString() : null;
player.channel.DeleteRFC(id, funcName);
break;
}
case Packet.RequestSetChannelData:
{
player.channel.data = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseSetChannelData);
writer.Write(player.channel.data);
EndSend(true, player.channel, null);
break;
}
}
}
/// <summary>
/// Process a packet from the player.
/// </summary>
void ProcessChannelPacket(TcpPlayer player, Buffer buffer, BinaryReader reader, Packet request)
{
switch (request)
{
case Packet.RequestCreate:
{
// Create a new object
ushort objectIndex = reader.ReadUInt16();
byte type = reader.ReadByte();
uint uniqueID = 0;
if (type != 0)
{
uniqueID = --player.channel.objectCounter;
// 1-32767 is reserved for existing scene objects.
// 32768 - 16777215 is for dynamically created objects.
if (uniqueID < 32768)
{
player.channel.objectCounter = 0xFFFFFF;
uniqueID = 0xFFFFFF;
}
Channel.CreatedObject obj = new Channel.CreatedObject();
obj.playerID = player.id;
obj.objectID = objectIndex;
obj.uniqueID = uniqueID;
obj.type = type;
if (buffer.size > 0)
{
obj.buffer = buffer;
buffer.MarkAsUsed();
}
player.channel.created.Add(obj);
}
// Inform the channel
BinaryWriter writer = BeginSend(Packet.ResponseCreate);
writer.Write(player.id);
writer.Write(objectIndex);
writer.Write(uniqueID);
if (buffer.size > 0) writer.Write(buffer.buffer, buffer.position, buffer.size);
EndSend(true, player.channel, null);
break;
}
case Packet.RequestDestroy:
{
// Destroy the specified network object
uint uniqueID = reader.ReadUInt32();
// Remove this object
if (player.channel.DestroyObject(uniqueID))
{
// Inform all players in the channel that the object should be destroyed
BinaryWriter writer = BeginSend(Packet.ResponseDestroy);
writer.Write((ushort)1);
writer.Write(uniqueID);
EndSend(true, player.channel, null);
}
break;
}
case Packet.RequestLoadLevel:
{
// Change the currently loaded level
if (player.channel.host == player)
{
player.channel.Reset();
player.channel.level = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseLoadLevel);
writer.Write(string.IsNullOrEmpty(player.channel.level) ? "" : player.channel.level);
EndSend(true, player.channel, null);
}
break;
}
case Packet.RequestSetHost:
{
// Transfer the host state from one player to another
if (player.channel.host == player)
{
TcpPlayer newHost = GetPlayer(reader.ReadInt32());
if (newHost != null && newHost.channel == player.channel) SendSetHost(newHost);
}
break;
}
case Packet.RequestLeaveChannel:
{
SendLeaveChannel(player, true);
break;
}
case Packet.RequestCloseChannel:
{
player.channel.persistent = false;
player.channel.closed = true;
break;
}
case Packet.RequestSetPlayerLimit:
{
player.channel.playerLimit = reader.ReadUInt16();
break;
}
case Packet.RequestRemoveRFC:
{
uint id = reader.ReadUInt32();
string funcName = ((id & 0xFF) == 0) ? reader.ReadString() : null;
player.channel.DeleteRFC(id, funcName);
break;
}
case Packet.RequestSetChannelData:
{
player.channel.data = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseSetChannelData);
writer.Write(player.channel.data);
EndSend(true, player.channel, null);
break;
}
}
}