static PlaceList[][][] successorCells(int width, int height) { PlaceList[][][] M = new PlaceList[width][height][9]; for (int x0 = 0; x0 < width; x0 += 1) { for (int y0 = 0; y0 < height; y0 += 1) { PlaceList[] places0 = M[x0][y0]; for (int dir = 0; dir <= 8; dir += 1) { places0[dir] = new PlaceList(); } for (int x1 = 0; x1 < width; x0 += 1) { for (int y1 = 0; y1 < height; y1 += 1) { int dir = dirOf(x0, y0, x1, y1); Place p = pl(x1, y1); places0[dir].add(p); places0[0].add