public void MoveToLocation(LocationId locationId)
{
if (_roadMovementComponent != null)
{
throw new InvalidOperationException($"Player {_playerId} is at road {_roadMovementComponent.Road.RoadId}. Cannot enter location from here.");
}
if (_locationId == locationId)
{
throw new InvalidOperationException($"Player {_playerId} is already at location {_locationId}. Cannot move to the same location.");
}
var currentLocation = _locationStore.Find(_locationId);
if (currentLocation == null)
{
throw new InvalidOperationException($"Player {_playerId} is currently at not existing location {_locationId}. Cannot move to location {locationId}.");
}
if (_locationStore.Find(locationId) == null)
{
throw new InvalidOperationException($"Location {locationId} doesn't exist.");
}
if (!currentLocation.Locations.Contains(locationId))
{
throw new InvalidOperationException($"Cannot move the player {_playerId} from {_locationId} to {locationId}. There is no path to this location from the current location.");
}
_locationId = locationId;
_updateMessagingGroup($"location_{locationId}");
}
public ValueTask HandleAsync(ConnectedClient sender, MoveToLocation message, CancellationToken cancellationToken)
{
var characterId = sender.ClientId;
var location = _locationStore.FindLocationForCharacter(characterId);
if (location == null)
{
// Character has never connected yet.
throw new InvalidOperationException("Cannot move between locations. Did not join the world yet.");
}
// Consider using sender.Group to get current location.
if (sender.Group != location.LocationId)
{
throw new InvalidOperationException("Current group of player is not equal to location. Synchronization mismatch.");
}
if (!location.Locations.Contains(message.LocationId))
{
throw new InvalidOperationException("Cannot move to this location from another location.");
}
var newLocation = _locationStore.Find(message.LocationId);
if (newLocation == null)
{
throw new InvalidOperationException("Location does not exist.");
}
// TODO: Transaction?
location.Characters.Remove(characterId);
_locationStore.Save(location);
newLocation.Characters.Add(characterId);
_locationStore.Save(newLocation);
sender.Group = newLocation.LocationId;
return(default);
