public GridPoint AdvanceWest(GridPoint fromPosition)
{
return((fromPosition.X == 0)
? new GridPoint(MaxX - 1, fromPosition.Y)
: new GridPoint(fromPosition.X - 1, fromPosition.Y));
}
public GridPoint AdvanceEast(GridPoint fromPosition)
{
return((fromPosition.X + 1 == MaxX)
? new GridPoint(0, fromPosition.Y)
: new GridPoint(fromPosition.X + 1, fromPosition.Y));
}
public GridPoint AdvanceNorth(GridPoint fromPosition)
{
return((fromPosition.Y + 1 == MaxY)
? new GridPoint(fromPosition.X, 0)
: new GridPoint(fromPosition.X, fromPosition.Y + 1));
}
public GridPoint AdvanceSouth(GridPoint fromPosition)
{
return((fromPosition.Y == 0)
? new GridPoint(fromPosition.X, MaxY - 1)
: new GridPoint(fromPosition.X, fromPosition.Y - 1));
}
public bool ObstacleExists(GridPoint position)
{
return(Obstacles.Any(obstacle => obstacle.X == position.X && obstacle.Y == position.Y));
}