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use super::color::Color;
#[derive(Debug, Clone, Copy, PartialEq, Eq, num_enum::FromPrimitive)]
#[repr(usize)]
pub enum Piece {
#[default]
Pawn,
Knight,
Bishop,
Rook,
Queen,
King,
PawnBlack,
KnightBlack,
BishopBlack,
RookBlack,
QueenBlack,
KingBlack,
}
impl Piece {
pub fn without_color(&self) -> Self {
let index = *self as usize;
Self::from(index % 6)
}
/// Note: assumes self is without color!
pub fn colored(&self, color: Color) -> Self {
match color {
Color::White => *self,
Color::Black => Self::from(*self as usize + 6)
}
}
// Return the price of the peice
pub fn static_eval(&self) -> f32 {
match self.without_color() {
Piece::Pawn => 1.0,
Piece::Bishop => 3.3,
Piece::Knight => 3.2,
Piece::Rook => 5.0,
Piece::Queen => 9.0,
Piece::King => 0.,
_ => panic!("Piece should be without color"),
}
}
}
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