public virtual async Task StartAsync(Game.StartCommand command, CancellationToken cancellationToken = default)
{
var(session, id) = command;
var context = CommandContext.GetCurrent();
var user = await AuthService.GetUserAsync(session, cancellationToken);
user = user.MustBeAuthenticated();
var userId = long.Parse(user.Id);
await using var dbContext = await CreateCommandDbContextAsync(cancellationToken);
var dbGame = await GetDbGame(dbContext, id, cancellationToken);
var game = dbGame.ToModel();
var engine = GameEngines[game.EngineId];
if (game.Stage != GameStage.New)
{
throw new InvalidOperationException("Game has already been started.");
}
if (game.UserId != userId && !engine.AutoStart)
{
throw new InvalidOperationException("Only the creator of the game can start it.");
}
if (game.Players.Count < engine.MinPlayerCount)
{
throw new InvalidOperationException(
$"{engine.MinPlayerCount - game.Players.Count} more player(s) must join to start the game.");
}
if (game.Players.Count > engine.MaxPlayerCount)
{
throw new InvalidOperationException(
$"Too many players: {engine.MaxPlayerCount - game.Players.Count} player(s) must leave to start the game.");
}
context.Operation().Items.Set(game.Stage); // Saving prev. stage
var now = Clock.Now;
game = game with {
StartedAt = now,
LastMoveAt = now,
Stage = GameStage.Playing,
};
game = GameEngines[game.EngineId].Start(game);
dbGame.UpdateFrom(game);
await dbContext.SaveChangesAsync(cancellationToken);
context.Operation().Items.Set(game);
}
public Task Start([FromBody] Game.StartCommand command, CancellationToken cancellationToken = default)
{
command.UseDefaultSession(SessionResolver);
return(Games.Start(command, cancellationToken));
}
