public async ValueTask <ConnectedClient> ConnectAsync(IConnection connection, CancellationToken cancellationToken)
{
if (!(await connection.ReceiveAsync(cancellationToken).ConfigureAwait(false) is Join join))
{
throw new InvalidOperationException($"Could not connect: first message is not a valid {nameof(Join)} message.");
}
var playerId = new PlayerId(join.PlayerId);
var player = _playerRepository.Find(playerId);
if (player == null)
{
throw new InvalidOperationException($"Could not connect: could not find player {playerId}.");
}
var group = player.MessagingGroup;
return(new ConnectedClient(playerId, connection, group, _updateDetector));
}
public object GetUpdateFor(string clientId)
{
var playerId = new PlayerId(clientId);
var player = _playerRepository.Find(playerId);
if (player == null)
{
throw new InvalidOperationException($"Player {playerId} is not found.");
}
var state = player.GetState();
if (state.RoadMovementState != null)
{
var playerPositions = _connectedClients.FindInGroups(player.MessagingGroup)
.Select(client =>
{
var playerId = new PlayerId(client.ClientId);
var player = _playerRepository.Find(playerId);
if (player == null)
{
throw new InvalidOperationException($"Player {playerId} is not found.");
}
return(player);
})
.Select(p => ToPlayerPosition(p, state.RoadMovementState.MovementDirection));
return(new MovementUpdate(
state.RoadMovementState.RoadId,
playerPositions.Single(p => p.PlayerId == state.PlayerId),
playerPositions.ToList()));
}
var visiblePlayerIds = _connectedClients.FindInGroups(player.MessagingGroup)
.Select(client => client.ClientId)
.ToList();
return(new Update(state.LocationId, visiblePlayerIds));
}
