pub trait LevelQuery {
// Required methods
fn width(&self) -> usize;
fn len(&self) -> usize;
fn first(&self) -> isize;
fn last(&self) -> isize;
fn item(&self, col: isize, row: isize, boost: bool) -> i64;
fn find_start_spot(&self, col: isize, row: isize) -> Option<(isize, isize)>;
fn skill(&self) -> Skill;
}