}
public static void main(String[] args)
{
TestBoard1 b=new TestBoard1(false);
b.exception.add(new Point2I(11, 11));
b.exception.add(new Point2I(7, 8));
MultiRaysCaster m=new MultiRaysCaster();
m.visitFieldOfView(b, 10, 10, 10);
System.out.println(b.obsNotVisited);
b.mark(10, 10, '@');
b.print(0, 20, 0, 20);