private IEnumerable <GameState> CreateGameStates(GameState gameState, IWordStateMachine wordStateMachine)
{
for (int index = 0; index < gameState.OccupationField.Length; index++)
{
GamePoint startGamePoint = new GamePoint(gameState.GameInformation, index);
wordStateMachine.Reset();
if (wordStateMachine.CanNavigateForward(startGamePoint.ToChar()) && !gameState.OccupationField[startGamePoint.Index])
{
TemporaryGameState temporaryGameState = new TemporaryGameState(gameState, startGamePoint, wordStateMachine);
foreach (var newGameState in CreateGameStates(temporaryGameState))
{
yield return(newGameState);
}
}
}
}
private IEnumerable <GameState> CreateGameStates(TemporaryGameState temporaryGameState)
{
foreach (NavigateDirection navigateDirection in Enum.GetValues(typeof(NavigateDirection)))
{
if (temporaryGameState.CanNavigate(navigateDirection))
{
temporaryGameState.Navigate(navigateDirection);
foreach (var newGameState in CreateGameStates(temporaryGameState))
{
yield return(newGameState);
}
temporaryGameState.NavigateBack();
}
}
if (temporaryGameState.IsWordExist())
{
yield return(temporaryGameState.GetNewGameState());
}
}
