// don't move gnome if another gnome has collided with it
public bool IsFrozen(IGnome gnome)
{
var position = gnomePositions[gnome];
var gnomesAtPosition = gnomePositions.Where(x => x.Value.Column == position.Column && x.Value.Row == position.Row).ToList();
return(gnomesAtPosition.Count > 1);
}
private bool TryMove(IGnome gnome, int row, int column)
{
var newPosition = board.GetPosition(column, row);
if (newPosition.Tile.CanMoveThrough)
{
gnomePositions[gnome] = newPosition;
return(true);
}
return(false);
}
public bool TryMove(IGnome gnome, Direction direction)
{
var position = gnomePositions[gnome];
switch (direction)
{
case Direction.North: return(TryMove(gnome, position.Row - 1, position.Column));
case Direction.East: return(TryMove(gnome, position.Row, position.Column + 1));
case Direction.South: return(TryMove(gnome, position.Row + 1, position.Column));
case Direction.West: return(TryMove(gnome, position.Row, position.Column - 1));
default: throw new Exception($"Unexpected direction {direction}");
}
}
public void KillGnome(IGnome gnome)
{
gnomePositions.Remove(gnome);
}