public void receiveUpdate(DatagramIn dg, IDistributedObject distObj, UInt16 field_id)
{
Debug.Log("Receive update for class " + distObj.getClass() + " field ID" + field_id);
// first get the array of fields we'll need to unpack
string[] t_fields = DCFile.fieldLookup[field_id];
// next, define an empty array of params the size of the number of fields
object[] t_params = new object[t_fields.Length];
// unpack the parameters
for (int i = 0; i < t_fields.Length; ++i)
{
t_params[i] = unserializeType(dg, t_fields[i]);
}
// finally, use reflection to call the function
Type t_type = distObj.GetType();
MethodInfo t_method = t_type.GetMethod(DCFile.fieldNameLookup[field_id]);
t_method.Invoke(distObj, t_params);
}
public object unserializeType(DatagramIn dg, string type_n)
{
if (type_n.Contains("int"))
{
int divideBy = 1;
if (type_n.Contains("/"))
{
string[] divideParts = type_n.Split("/".ToCharArray());
divideBy = Int32.Parse(divideParts[1]);
type_n = divideParts[0];
}
if (divideBy != 1)
{
object originalPrim = readPrimitive(dg, type_n);
double prim = System.Convert.ToDouble(originalPrim);
return(prim / divideBy);
}
}
return(readPrimitive(dg, type_n));
}
// read/write *primitive* types from an Astron stream (e.g.: uint16)
// distinguished from a higher level type, such as structs, dclasses,
// or uint16%360/100, all of which are made up of primitive types
public object readPrimitive(DatagramIn dg, string type_n)
{
switch (type_n)
{
case "uint8":
return(dg.ReadByte());
case "uint16":
return(dg.ReadUInt16());
case "uint32":
return(dg.ReadUInt32());
case "uint64":
return(dg.ReadUInt64());
case "int8":
return(dg.ReadSByte());
case "int16":
return(dg.ReadInt16());
case "int32":
return(dg.ReadInt32());
case "int64":
return(dg.ReadInt64());
case "string":
return(dg.ReadString());
case "blob":
return(dg.ReadBlob());
case "float64":
return(dg.ReadDouble());
default:
Debug.Log("Reading Error: Type '" + type_n + "' is not a primitive");
return(null);
}
}
public void unserializeClass(DatagramIn dg, SerializationLevel level, bool owner, bool optionals)
{
// since it's the same for all the messages, quickly unpack the header
UInt32 do_id = dg.ReadUInt32();
UInt32 parent_id = dg.ReadUInt32();
UInt32 zone_id = dg.ReadUInt32();
UInt16 dclass_id = dg.ReadUInt16();
string class_n = DCFile.DCRoot[dclass_id];
// when unpacking a class, there are two phases:
// 1) unpacking the required fields (required modifiers are defined by level)
// and 2) unpacking optional fields
string r_class_n = owner ? class_n + "OV" : class_n;
Type t = Type.GetType(r_class_n);
IDistributedObject distObj;
if (t.IsSubclassOf(typeof(DistributedUnityObject)))
{
Debug.Log("DistributedUnityObject instantiated of type " + t);
GameObject prefab;
try {
prefab = prefabs[r_class_n];
} catch (Exception e) {
Debug.LogException(e);
return;
}
GameObject gameObject = UnityEngine.Object.Instantiate(prefab) as GameObject;
distObj = gameObject.GetComponent <MonoBehaviour>() as IDistributedObject;
}
else
{
Debug.Log("DistributedObject instantiated of type " + t);
distObj = Activator.CreateInstance(t) as IDistributedObject;
}
distObj.setCR(this);
// give it some context
distObj.setDoID(do_id);
distObj.setLocation(new Location(zone_id, parent_id));
// to unpack required fields, first get a list of all fields
UInt16[] field_list = DCFile.classLookup[class_n];
// next, iterate through the fields to find required fields
for (int i = 0; i < field_list.Length; ++i)
{
string[] modifiers = DCFile.fieldModifierLookup[field_list[i]];
if (Array.IndexOf(modifiers, "required") > -1)
{
if (level == SerializationLevel.REQUIRED)
{
// go ahead, receive the update
receiveUpdate(dg, distObj, field_list[i]);
}
else if (level == SerializationLevel.REQUIRED_BCAST)
{
// only if it contains broadcast
if (Array.IndexOf(modifiers, "broadcast") > -1)
{
receiveUpdate(dg, distObj, field_list[i]);
}
}
else if (level == SerializationLevel.REQUIRED_BCAST_OR_OWNRECV)
{
// it either needs to contain broadcast OR ownrecv
if ((Array.IndexOf(modifiers, "broadcast") > -1) || (Array.IndexOf(modifiers, "ownrecv") > -1))
{
receiveUpdate(dg, distObj, field_list[i]);
}
}
}
}
// without optionals, we'd be done
// however, unpacking optionals is significantly easier
// because we don't care about modifiers.
// assume the server is sending fields we understand
if (optionals)
{
UInt16 numOptionals = dg.ReadUInt16();
for (int o = 0; o < numOptionals; ++o)
{
receiveUpdate(dg, distObj, dg.ReadUInt16());
}
}
if (owner)
{
ovId2ov.Add(do_id, distObj);
}
else
{
doId2do.Add(do_id, distObj);
}
}
private void onData(MemoryStream data)
{
DatagramIn reader = new DatagramIn(data);
UInt16 type = reader.ReadUInt16();
switch ((MessageTypes)type)
{
case MessageTypes.CLIENT_HELLO_RESP:
{
Debug.Log("Response to client_hello");
if (onHello != null)
{
onHello();
}
break;
}
case MessageTypes.CLIENT_EJECT:
{
UInt16 error_code = reader.ReadUInt16();
string reason = reader.ReadString();
Debug.Log("Ejected Code " + error_code + ": " + reason);
if (onEject != null)
{
onEject(error_code, reason);
}
break;
}
case MessageTypes.CLIENT_ADD_INTEREST:
{
UInt32 context = reader.ReadUInt32();
UInt16 interest_id = reader.ReadUInt16();
UInt32 parent_id = reader.ReadUInt32();
UInt32 zone_id = reader.ReadUInt32();
Interest newInterest = new Interest(context, interest_id, zone_id, parent_id);
context2interest.Add(context, newInterest);
if (onAddInterest != null)
{
onAddInterest(newInterest);
}
break;
}
case MessageTypes.CLIENT_DONE_INTEREST_RESP:
{
UInt32 context = reader.ReadUInt32();
UInt16 interest_id = reader.ReadUInt16();
if (onDoneInterest != null)
{
onDoneInterest(context2interest[context]);
}
break;
}
case MessageTypes.CLIENT_ENTER_OBJECT_REQUIRED:
{
unserializeClass(reader, SerializationLevel.REQUIRED_BCAST, false, false);
break;
}
case MessageTypes.CLIENT_ENTER_OBJECT_REQUIRED_OTHER:
{
unserializeClass(reader, SerializationLevel.REQUIRED_BCAST, false, true);
break;
}
case MessageTypes.CLIENT_ENTER_OBJECT_REQUIRED_OWNER:
{
unserializeClass(reader, SerializationLevel.REQUIRED_BCAST_OR_OWNRECV, true, false);
break;
}
case MessageTypes.CLIENT_ENTER_OBJECT_REQUIRED_OTHER_OWNER:
{
unserializeClass(reader, SerializationLevel.REQUIRED_BCAST_OR_OWNRECV, true, true);
break;
}
case MessageTypes.CLIENT_OBJECT_LOCATION:
{
UInt32 do_id = reader.ReadUInt32();
UInt32 parent_id = reader.ReadUInt32();
UInt32 zone_id = reader.ReadUInt32();
doId2do[do_id].getLocation().changeLocation(zone_id, parent_id);
doId2do[do_id].locationChanged();
break;
}
case MessageTypes.CLIENT_OBJECT_LEAVING:
{
UInt32 doId = reader.ReadUInt32();
doId2do[doId].leaving();
// freeing the DO from the doId2do map is done by the leaving method
// via the removeDOfromMap function
// if the leaving method is overriden,
// removeDOfromMap should still be called to prevent memory leaks
break;
}
case MessageTypes.CLIENT_OBJECT_SET_FIELD:
{
UInt32 doId = reader.ReadUInt32();
UInt16 field_id = reader.ReadUInt16();
receiveUpdate(reader, doId2do[doId], field_id);
break;
}
case MessageTypes.CLIENT_OBJECT_SET_FIELDS:
{
UInt32 doId = reader.ReadUInt32();
IDistributedObject distObj = doId2do[doId];
UInt16 num_fields = reader.ReadUInt16();
for (int i = 0; i < num_fields; ++i)
{
UInt16 field_id = reader.ReadUInt16();
receiveUpdate(reader, distObj, field_id);
}
break;
}
default:
{
Debug.Log("Unknown message type: " + type);
break;
}
}
}
