/// <summary>
/// Expects operation <see cref = "EnterWorld" /> and creates a new <see cref = "MmoActor" /> with a new <see cref = "MmoItem" /> as avatar and a new <see cref = "MmoClientInterestArea" />.
/// The <see cref = "MmoActor" /> becomes the new <see cref = "Peer.CurrentOperationHandler">operation handler</see>.
/// If another <see cref = "MmoActor" /> with the same name exists he is disconnected.
/// An <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.Ok" /> is published on success.
/// </summary>
/// <param name = "peer">
/// The client peer.
/// </param>
/// <param name = "request">
/// The request.
/// </param>
/// <param name = "sendParameters">
/// The send Parameters.
/// </param>
/// <returns>
/// Null or an <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.WorldNotFound" />.
/// </returns>
public OperationResponse OperationEnterWorld(PeerBase peer, OperationRequest request, SendParameters sendParameters)
{
var operation = new EnterWorld(peer.Protocol, request);
if (!operation.IsValid)
{
return new OperationResponse(request.OperationCode) { ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage() };
}
MmoWorld world;
if (MmoWorldCache.Instance.TryGet(operation.WorldName, out world) == false)
{
return operation.GetOperationResponse((int)ReturnCode.WorldNotFound, "WorldNotFound");
}
var interestArea = new MmoClientInterestArea(peer, operation.InterestAreaId, world)
{
ViewDistanceEnter = operation.ViewDistanceEnter.ToVector(), ViewDistanceExit = operation.ViewDistanceExit.ToVector()
};
var actor = new MmoActor(peer, world, interestArea);
var avatar = new MmoItem(world, operation.Position, operation.Rotation, operation.Properties, actor, operation.Username, (byte)ItemType.Avatar);
while (world.ItemCache.AddItem(avatar) == false)
{
Item otherAvatarItem;
if (world.ItemCache.TryGetItem(avatar.Type, avatar.Id, out otherAvatarItem))
{
avatar.Dispose();
actor.Dispose();
interestArea.Dispose();
((Peer)((MmoItem)otherAvatarItem).Owner.Peer).DisconnectByOtherPeer(this, request, sendParameters);
// request continued later, no response here
return null;
}
}
// init avatar
actor.AddItem(avatar);
actor.Avatar = avatar;
((Peer)peer).SetCurrentOperationHandler(actor);
// set return values
var responseObject = new EnterWorldResponse
{
BottomRightCorner = world.Area.Max.ToFloatArray(2),
TopLeftCorner = world.Area.Min.ToFloatArray(2),
TileDimensions = world.TileDimensions.ToFloatArray(2),
WorldName = world.Name
};
// send response; use item channel to ensure that this event arrives before any move or subscribe events
var response = new OperationResponse(request.OperationCode, responseObject);
sendParameters.ChannelId = Settings.ItemEventChannel;
peer.SendOperationResponse(response, sendParameters);
lock (interestArea.SyncRoot)
{
interestArea.AttachToItem(avatar);
interestArea.UpdateInterestManagement();
}
avatar.Spawn(operation.Position);
world.Radar.AddItem(avatar, operation.Position);
// response already sent
return null;
}
/// <summary>
/// Expects operation <see cref = "EnterWorld" /> and creates a new <see cref = "MmoActor" /> with a new <see cref = "MmoItem" /> as avatar and a new <see cref = "MmoClientInterestArea" />.
/// The <see cref = "MmoActor" /> becomes the new <see cref = "Peer.CurrentOperationHandler">operation handler</see>.
/// If another <see cref = "MmoActor" /> with the same name exists he is disconnected.
/// An <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.Ok" /> is published on success.
/// </summary>
/// <param name = "peer">
/// The client peer.
/// </param>
/// <param name = "request">
/// The request.
/// </param>
/// <param name = "sendParameters">
/// The send Parameters.
/// </param>
/// <returns>
/// Null or an <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.WorldNotFound" />.
/// </returns>
public OperationResponse OperationEnterWorld(PeerBase peer, OperationRequest request, SendParameters sendParameters)
{
var operation = new EnterWorld(peer.Protocol, request);
if (!operation.IsValid)
{
return(new OperationResponse(request.OperationCode)
{
ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage()
});
}
MmoWorld world;
if (MmoWorldCache.Instance.TryGet(operation.WorldName, out world) == false)
{
return(operation.GetOperationResponse((int)ReturnCode.WorldNotFound, "WorldNotFound"));
}
var interestArea = new MmoClientInterestArea(peer, operation.InterestAreaId, world)
{
ViewDistanceEnter = operation.ViewDistanceEnter.ToVector(), ViewDistanceExit = operation.ViewDistanceExit.ToVector()
};
var actor = new MmoActor(peer, world, interestArea);
var avatar = new MmoItem(world, operation.Position, operation.Rotation, operation.Properties, actor, operation.Username, (byte)ItemType.Avatar);
while (world.ItemCache.AddItem(avatar) == false)
{
Item otherAvatarItem;
if (world.ItemCache.TryGetItem(avatar.Type, avatar.Id, out otherAvatarItem))
{
avatar.Dispose();
actor.Dispose();
interestArea.Dispose();
((Peer)((MmoItem)otherAvatarItem).Owner.Peer).DisconnectByOtherPeer(this, request, sendParameters);
// request continued later, no response here
return(null);
}
}
// init avatar
actor.AddItem(avatar);
actor.Avatar = avatar;
((Peer)peer).SetCurrentOperationHandler(actor);
// set return values
var responseObject = new EnterWorldResponse
{
BottomRightCorner = world.Area.Max.ToFloatArray(2),
TopLeftCorner = world.Area.Min.ToFloatArray(2),
TileDimensions = world.TileDimensions.ToFloatArray(2),
WorldName = world.Name
};
// send response; use item channel to ensure that this event arrives before any move or subscribe events
var response = new OperationResponse(request.OperationCode, responseObject);
sendParameters.ChannelId = Settings.ItemEventChannel;
peer.SendOperationResponse(response, sendParameters);
lock (interestArea.SyncRoot)
{
interestArea.AttachToItem(avatar);
interestArea.UpdateInterestManagement();
}
avatar.Spawn(operation.Position);
world.Radar.AddItem(avatar, operation.Position);
// response already sent
return(null);
}
/// <summary>
/// Adds the <paramref name = "item" /> to the owned items.
/// </summary>
/// <param name = "item">
/// The mmo item.
/// </param>
/// <exception cref = "ArgumentException">
/// The item <see cref = "MmoItem.Owner" /> must be this actor.
/// </exception>
public void AddItem(MmoItem item)
{
if (item.Owner != this)
{
throw new ArgumentException("foreign owner forbidden");
}
base.AddItem(item);
}
/// <summary>
/// Handles operation <see cref = "SpawnItem" />: Creates a new <see cref = "Item" /> and optionally subscribes an <see cref = "InterestArea" /> to it.
/// </summary>
/// <param name = "peer">
/// The client peer.
/// </param>
/// <param name = "request">
/// The request.
/// </param>
/// <returns>
/// An <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.Ok" />, <see cref = "ReturnCode.ItemAlreadyExists" /> or <see cref = "ReturnCode.InterestAreaNotFound" />.
/// </returns>
public OperationResponse OperationSpawnItem(PeerBase peer, OperationRequest request)
{
var operation = new SpawnItem(peer.Protocol, request);
if (!operation.IsValid)
{
return new OperationResponse(request.OperationCode) { ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage() };
}
operation.OnStart();
InterestArea interestArea;
if (operation.InterestAreaId.HasValue)
{
if (this.TryGetInterestArea(operation.InterestAreaId.Value, out interestArea) == false)
{
return operation.GetOperationResponse((int)ReturnCode.InterestAreaNotFound, "InterestAreaNotFound");
}
}
else
{
interestArea = null;
}
IWorld world = this.World;
var item = new MmoItem(world, operation.Position, operation.Rotation, operation.Properties, this, operation.ItemId, operation.ItemType);
if (world.ItemCache.AddItem(item))
{
this.AddItem(item);
return this.ItemOperationSpawn(item, operation, interestArea);
}
item.Dispose();
return operation.GetOperationResponse((int)ReturnCode.ItemAlreadyExists, "ItemAlreadyExists");
}
/// <summary>
/// Spawns an item.
/// </summary>
/// <param name = "item">
/// The mmo item.
/// </param>
/// <param name = "operation">
/// The operation.
/// </param>
/// <param name = "interestArea">
/// The interest Area.
/// </param>
/// <returns>
/// error code ok
/// </returns>
private OperationResponse ItemOperationSpawn(MmoItem item, SpawnItem operation, InterestArea interestArea)
{
// this should always return Ok
MethodReturnValue result = this.CheckAccess(item);
if (result)
{
item.Rotation = operation.Rotation;
item.Spawn(operation.Position);
((MmoWorld)this.World).Radar.AddItem(item, operation.Position);
if (interestArea != null)
{
lock (interestArea.SyncRoot)
{
interestArea.SubscribeItem(item);
}
}
}
operation.OnComplete();
return operation.GetOperationResponse(result);
}
/// <summary>
/// The move operation.
/// </summary>
/// <param name = "item">
/// The mmo item.
/// </param>
/// <param name = "operation">
/// The operation.
/// </param>
/// <param name = "sendParameters">
/// The send Parameters.
/// </param>
/// <returns>
/// error code ok
/// </returns>
private OperationResponse ItemOperationMove(MmoItem item, Move operation, SendParameters sendParameters)
{
// should always be OK
MethodReturnValue result = this.CheckAccess(item);
if (result)
{
// save previous for event
float[] oldPosition = item.Coordinate;
float[] oldRotation = item.Rotation;
// move
item.Rotation = operation.Rotation;
item.Move(operation.Position);
// send event
var eventInstance = new ItemMoved
{
ItemId = item.Id,
ItemType = item.Type,
OldPosition = oldPosition,
Position = operation.Position,
Rotation = operation.Rotation,
OldRotation = oldRotation
};
var eventData = new EventData((byte)EventCode.ItemMoved, eventInstance);
sendParameters.ChannelId = Settings.ItemEventChannel;
var message = new ItemEventMessage(item, eventData, sendParameters);
item.EventChannel.Publish(message);
// no response sent
operation.OnComplete();
return null;
}
return operation.GetOperationResponse(result);
}
