/// <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>
/// 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");
}