protected override Event Persist()
{
if (Result.Resolution != EventResolutionType.Commit)
{
return(this);
}
Result.Deltas.Add(new Delta {
Actor = _actor, Key = "NewBackground", Value = movement.Destination.ImageUrl, Targets = repo.Get(Result)
});
LocationMutator.GoToPosition(movement);
if (movement.Origin == null)
{
return(this);
}
LocationMutator.RemovePlayerFromScene(movement);
if (!movement.Origin.Players.Any())
{
LocationMutator.RemoveEmptyScene(movement);
}
else
{
var e = new LeaveLocationEvent(movement.Traveler, movement.Origin.Id, serviceProvider);
Engine.Instance.Push(e);
}
return(this);
}
protected override ReadonlyEvent Resolve()
{
movement = new Movement();
//TODO: Currently, the mutator is accessed in Resolve. It is supposed to only change things and therefor be accessed in Persist.
//Setting of these values is not a write operation, but it involves logic that should not be inside the Process for Changing Location.
//So thats a problem...
LocationMutator.SetTraveler(_actor, movement);
LocationMutator.SetOrigin(movement);
LocationMutator.SetDestination(_destinationId, movement);
//TODO: Currently, we detect login by saying that we have no origin, so it must be logon.
//Maybe we should make this its own event?
if (movement.Origin == null)
{
Result.Message = string.Format("{0} has logged into the location {1}", _actor.Name, movement.Destination.Name);
Result.Deltas.Add(new Delta {
Actor = _actor, Key = "PlayerLoggedIn", Value = movement.Destination.Name.ToString(), Targets = repo.Get(Result)
});
SetStandardResult();
return(this);
}
if (CanGoToPosition(movement))
{
SetStandardResult();
Result.Message = GenerateMessageString();
}
else
{
movement.Destination.RemovePlayer(movement.Traveler);
Result.Message = string.Format("{0} is not allowed to go to {1} from this location.", _actor.Name, movement.Destination.Name);
Result.Resolution = EventResolutionType.Rollback;
}
return(this);
}
