// FIXME::: CHANGE HERE FOR VIDEO!!!!
    public List<Position> getValidPositions() {
        List<Position> list = initialisePositions();
        list.removeIf(p -> !isPositionAllowed(p));
        return list;
    }

    private List<Position> initialisePositions() {
        List<Position> list = new ArrayList<>();
        Position C = new Position(r, c);
        Position N = new Position(r - 1, c);
        Position NE = new Position(r - 1, c + 1);
        Position E = new Position(r, c + 1);
        Position SE = new Position(r + 1, c + 1);
        Position S = new Position(r + 1, c);
        Position SW = new Position(r + 1, c - 1);
        Position W = new Position(r, c - 1);
        Position NW = new Position(r - 1, c - 1);

        list.addAll(Arrays.asList(C, N, NE, E, SE, S, SW, W, NW));
        return list;
    }

    private boolean isPositionAllowed(Position p) {
        return p.getRow() >= 0 && p.getRow() < GameConstants.WORLDSIZE &&
                p.getColumn() >= 0 && p.getColumn() < GameConstants.WORLDSIZE;
    }