chore: some semblence of a movegen

games/src/ataxx/position.rs

@@ -86,6 +86,18 @@ impl PositionType for Position {
         self.bitboards[piece as usize]
     }
 
+    fn side_to_move(&self) -> interface::Color<Self> {
+        self.side_to_move
+    }
+
+    fn half_move_clock(&self) -> usize {
+        self.half_move_clock as usize
+    }
+
+    fn ply_count(&self) -> usize {
+        self.ply_count as usize
+    }
+
     fn hash(&self) -> Hash {
         self.checksum
     }

games/src/chess/bitboard.rs

@@ -13,7 +13,7 @@
 
 use crate::interface::{bitboard_type, BitBoardType, RepresentableType};
 
-use super::Square;
+use super::{Direction, Square};
 
 bitboard_type! {
     /// A set of Squares implemented as a bitset where the `1 << sq.into()` bit
@@ -28,14 +28,27 @@ bitboard_type! {
 
         // BitBoards containing the squares of the first file and the first rank.
         FirstFile = Self(0x0101010101010101);
-        FirstRank = Self(0xff00000000000000);
+        FirstRank = Self(0x00000000000000ff);
     }
 }
 
 impl BitBoard {
     pub fn new(raw: u64) -> BitBoard {
         BitBoard(raw)
     }
+
+    pub fn shift(&self, dir: Direction) -> BitBoard {
+        match dir {
+            Direction::North => self.north(),
+            Direction::South => self.south(),
+            Direction::East => self.east(),
+            Direction::West => self.west(),
+            Direction::NorthEast => self.north().east(),
+            Direction::NorthWest => self.north().west(),
+            Direction::SouthEast => self.south().east(),
+            Direction::SouthWest => self.south().west(),
+        }
+    }
 }
 
 impl BitBoard {
@@ -87,6 +100,11 @@ impl BitBoard {
         BitBoard(BitBoard::BETWEEN[sq_1 as usize][sq_2 as usize])
     }
 
+    pub fn between2(sq_1: Square, sq_2: Square) -> BitBoard {
+        BitBoard(BitBoard::BETWEEN[sq_1 as usize][sq_2 as usize])
+            | BitBoard::from(sq_2)
+    }
+
     #[rustfmt::skip]
     const BETWEEN: [[u64; Square::N]; Square::N] = [
         [ 0x0101010101010100, 0x0000000000000000, 0x0000000000000002, 0x0000000000000006, 0x000000000000000e, 0x000000000000001e, 0x000000000000003e, 0x000000000000007e, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000100, 0x0000000000000000, 0x0000000000000200, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000010100, 0x0000000000000000, 0x0000000000000000, 0x0000000000040200, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000001010100, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000008040200, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000101010100, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000001008040200, 0x0000000000000000, 0x0000000000000000, 0x0000010101010100, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000201008040200, 0x0000000000000000, 0x0001010101010100, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0040201008040200 ],

games/src/chess/mod.rs

@@ -3,6 +3,8 @@ pub mod castling;
 pub mod moves;
 pub mod zobrist;
 
+mod movegen;
+
 // Non-namespaced modules.
 mod bitboard;
 mod color;