public Position GetSurroundingPosition(Position start, Directions direction)
{
Position position;
switch (direction)
{
case Directions.North:
position = new Position(start.X, start.Y - 1);
break;
case Directions.South:
position = new Position(start.X, start.Y + 1);
break;
case Directions.West:
position = new Position(start.X - 1, start.Y);
break;
case Directions.East:
position = new Position(start.X + 1, start.Y);
break;
case Directions.NorthEast:
position = new Position(start.X + 1, start.Y - 1);
break;
case Directions.NorthWest:
position = new Position(start.X - 1, start.Y - 1);
break;
case Directions.SouthWest:
position = new Position(start.X - 1, start.Y + 1);
break;
default:
position = new Position(start.X + 1, start.Y + 1);
break;
}
return position;
}
public List<PositionedTile> GetSurroundingTiles(Position start, List<PositionedTile> tiles)
{
return (from direction in Enum.GetValues(typeof (Directions)).Cast<Directions>()
select GetSurroundingPosition(start, direction)
into p
where IsValid(p)
select GetTile(p, tiles)).ToList();
}
public bool IsValid(Position position)
{
if (position.X < 0 || position.Y < 0) return false;
if (position.X > _boardSize - 1 || position.Y > _boardSize - 1) return false;
return true;
}
public PositionedTile GetTile(Position position, List<PositionedTile> tiles)
{
return tiles[_positionFinder.GetIndex(position)];
}