public void NavigateBack()
{
var prevPoint = gamePoints.Pop();
currentPoint = gamePoints.Peek();
occupationField[prevPoint.Index] = false;
wordStateMachine.NavigateBack();
}
private void NavigationBase(int newIndex)
{
occupationField[newIndex] = true;
var newPoint = new GamePoint(GameInformation, newIndex);
gamePoints.Push(newPoint);
currentPoint = newPoint;
wordStateMachine.NavigateForward(GameInformation.FieldLetters[newIndex]);
}
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);
}
}
}
}
public TemporaryGameState(GameState initialGameState, GamePoint initialPoint, IWordStateMachine wordStateMachine)
{
this.wordStateMachine = wordStateMachine;
this.wordStateMachine.Reset();
this.wordStateMachine.NavigateForward(initialPoint.ToChar());
this.gamePoints = new Stack <GamePoint>();
this.gamePoints.Push(initialPoint);
this.GameInformation = initialGameState.GameInformation;
this.GameState = initialGameState;
this.InitialPoint = initialPoint;
this.currentPoint = initialPoint;
this.occupationField = new BitArray(initialGameState.OccupationField)
{
[currentPoint.Index] = true
};
}