function testAroundCell (screen, y, x, obj) {
    if (testCell(screen[y + 1][x], obj), obj) return {y + 1, x};
    if (testCell(screen[y - 1][x], obj), obj) return {y - 1, x};
    if (testCell(screen[y][x + 1], obj), obj) return {y, x + 1};
    if (testCell(screen[y][x - 1], obj), obj) return {y, x - 1};
    return false;
}