public IEnumerable<IEvent> Handle(MakeChoiceCommand command)
{
var events = new List<IEvent>();
var playerOneChoice = playerOne.CurrentChoice;
var playerTwoChoice = playerTwo.CurrentChoice;
if (state != GameState.Started)
return events;
if (IsPlayerOne(command.PlayerId) && playerOneChoice == Choice.None)
playerOneChoice = PlayerChoice(command, events);
else if (IsPlayerTwo(command.PlayerId) && playerTwoChoice == Choice.None)
playerTwoChoice = PlayerChoice(command, events);
// Decide winner if both has chosen
if (playerOneChoice != Choice.None && playerTwoChoice != Choice.None)
{
// decide round
var newRound = true;
Choice winsAgainstOne = winnersAgainst[playerOne.CurrentChoice];
if (playerTwoChoice == winsAgainstOne)
newRound = RoundWonBy(playerTwo, command, events);
else if (playerOneChoice == playerTwo.CurrentChoice)
events.Add(new RoundTiedEvent(command.EntityId, round));
else
newRound = RoundWonBy(playerOne, command, events);
if (newRound)
events.Add(new RoundStartedEvent(command.EntityId, round + 1));
}
return events;
}
private Choice PlayerChoice(MakeChoiceCommand command, List<IEvent> events)
{
events.Add(new ChoiceMadeEvent(
command.EntityId,
this.round,
command.PlayerId,
command.Choice));
var playerChoice = command.Choice;
return playerChoice;
}
private bool RoundWonBy(GamePlayer player, MakeChoiceCommand command, List<IEvent> events)
{
events.Add(new RoundWonEvent(command.EntityId, player.Email, round));
if (IsWinner(playerTwo))
{
GameWonBy(playerTwo, command, events);
return false;
}
return true;
}
private void GameWonBy(GamePlayer player, MakeChoiceCommand command, List<IEvent> events)
{
events.Add(new GameWonEvent(command.EntityId, player.Email));
}