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use piece::Piece;
use square::Square;
use std::fmt;
use std::cmp::Ordering;
#[derive(Clone, Copy, Eq, PartialOrd, PartialEq)]
pub struct ChessMove {
source: Square,
dest: Square,
promotion: Option<Piece>
}
impl ChessMove {
pub fn new(source: Square, dest: Square, promotion: Option<Piece>) -> ChessMove {
ChessMove { source: source, dest: dest, promotion: promotion }
}
pub fn get_source(&self) -> Square {
self.source
}
pub fn get_dest(&self) -> Square {
self.dest
}
pub fn get_promotion(&self) -> Option<Piece> {
self.promotion
}
}
impl fmt::Display for ChessMove {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.promotion {
None => write!(f, "{}-{}", self.source, self.dest),
Some(x) => write!(f, "{}-{}={}", self.source, self.dest, x)
}
}
}
impl Ord for ChessMove {
fn cmp(&self, other: &ChessMove) -> Ordering {
if self.source != other.source {
self.source.cmp(&other.source)
} else if self.dest != other.dest {
self.dest.cmp(&other.dest)
} else if self.promotion != other.promotion {
match self.promotion {
None => Ordering::Less,
Some(x) => {
match other.promotion {
None => Ordering::Greater,
Some(y) => x.cmp(&y)
}
}
}
} else {
Ordering::Equal
}
}
}