public GameDecorator(GameDecorator source)
{
game = source.game;
shifts = new Dictionary <int, Point>();
foreach (var pair in source.shifts)
{
shifts.Add(pair.Key, pair.Value);
}
}
public GameDecorator Shift(int value)
{
if (value <= 0 || value >= fieldSize * fieldSize)
{
throw new ArgumentOutOfRangeException();
}
int dx = locations[0].X - locations[value].X;
int dy = locations[0].Y - locations[value].Y;
if (Math.Abs(dx) == 1 ^ Math.Abs(dy) == 1)
{
GameDecorator decorator = new GameDecorator(this);
return(decorator.Shift(value));
}
else
{
throw new InvalidOperationException();
}
}
public GameDecorator Shift(int value)
{
if (value <= 0 || value >= game.fieldSize * game.fieldSize)
{
throw new ArgumentOutOfRangeException();
}
Point p1 = GetLocation(0);
Point p2 = GetLocation(value);
int dx = p1.X - p2.X;
int dy = p1.Y - p2.Y;
if (Math.Abs(dx) == 1 ^ Math.Abs(dy) == 1)
{
GameDecorator decorator = new GameDecorator(this);
decorator.shifts.Add(value, GetLocation(0));
decorator.shifts.Add(0, GetLocation(value));
return(decorator);
}
else
{
throw new InvalidOperationException();
}
}
