From 701197df3f44465648e68a3c4916b8447109fe71 Mon Sep 17 00:00:00 2001
From: c0repwn3r <core@coredoes.dev>
Date: Wed, 15 Feb 2023 16:37:35 -0500
Subject: [PATCH] make move traits/structs/etc

---
 bamboo/src/error.rs | 15 ++++++++++
 bamboo/src/lib.rs   |  3 +-
 bamboo/src/moves.rs | 73 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+), 1 deletion(-)
 create mode 100644 bamboo/src/moves.rs

diff --git a/bamboo/src/error.rs b/bamboo/src/error.rs
index 9aed6ae..50b85e2 100644
--- a/bamboo/src/error.rs
+++ b/bamboo/src/error.rs
@@ -104,4 +104,19 @@ impl Display for AlgebraicNotationError {
             Self::InvalidLength { got } => write!(f, "Invalid length, expected 2, got `{got}`")
         }
     }
+}
+
+#[derive(Debug)]
+/// Represents an error that occured making or unmaking an error.
+pub enum MoveApplicationError {
+
+}
+impl Error for MoveApplicationError {}
+impl Display for MoveApplicationError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        return Ok(());
+        /*match self {
+
+        }*/
+    }
 }
\ No newline at end of file
diff --git a/bamboo/src/lib.rs b/bamboo/src/lib.rs
index 90ccd89..d636eb7 100644
--- a/bamboo/src/lib.rs
+++ b/bamboo/src/lib.rs
@@ -34,4 +34,5 @@ pub mod board;
 #[macro_use]
 pub mod utils;
 pub mod nn;
-pub mod error;
\ No newline at end of file
+pub mod error;
+pub mod moves;
\ No newline at end of file
diff --git a/bamboo/src/moves.rs b/bamboo/src/moves.rs
new file mode 100644
index 0000000..2d48676
--- /dev/null
+++ b/bamboo/src/moves.rs
@@ -0,0 +1,73 @@
+// Bamboo, a NNUE chess engine written in Rust.
+//      Copyright (C) 2023 c0repwn3r
+//      This program is free software: you can redistribute it and/or modify
+//      it under the terms of the GNU General Public License as published by
+//      the Free Software Foundation, either version 3 of the License, or
+//      (at your option) any later version.
+//
+//      This program is distributed in the hope that it will be useful,
+//      but WITHOUT ANY WARRANTY; without even the implied warranty of
+//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+//      GNU General Public License for more details.
+//
+//      You should have received a copy of the GNU General Public License
+//      along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Traits and functions to make and unmake moves on a chessboard.
+
+use crate::error::MoveApplicationError;
+use crate::piece::{PieceColor, PieceOnBoard, PieceType};
+
+/// Represents a move on a chessboard.
+pub enum Move {
+    /// Represents a linear move, from A to B on the chessboard. No capture.
+    Linear {
+        /// The boardloc the piece is coming from.
+        from: isize,
+        /// The boardloc the piece is going to.
+        to: isize,
+        /// The `PieceOnBoard` struct of the piece BEFORE the move.
+        piece: PieceOnBoard
+    },
+    /// Represents a linear from, move A to B on the chessboard, and capturing a piece.
+    LinearCapture {
+        /// The boardloc the piece is coming from.
+        from: isize,
+        /// The boardloc the piece is going to.
+        to: isize,
+        /// The `PieceOnBoard` struct of the piece BEFORE the move.
+        piece: PieceOnBoard,
+        /// The `PieceOnBoard` struct of the piece being captured, BEFORE the move.
+        capturing: PieceOnBoard
+    },
+    /// Represents a castle, either white or black, kingside or queenside.
+    Castle {
+        /// The player that is performing the castle
+        player: PieceColor,
+        /// Which direction that player is castling, kingside or queenside.
+        queenside: bool
+    },
+    /// Represents a pawn promotion.
+    Promotion {
+        /// The pawn that is being promoted, BEFORE the move
+        piece: PieceOnBoard,
+        /// The location of the pawn, BEFORE the move
+        from: isize,
+        /// The location of the pawn, AFTER the move
+        to: isize,
+        /// The type of piece the pawn is promoting to.
+        becoming: PieceType
+    }
+}
+
+/// A trait to provide the operations of making and unmaking moves.
+pub trait MoveApplicator {
+    /// Perform the given move on the chessboard.
+    /// # Errors
+    /// This function will error if any error occurs while applying the move.
+    fn make_move(&mut self, make: Move) -> Result<(), MoveApplicationError>;
+    /// Undo the given move on the chessboard. This will probably break if that move wasn't the last move made.
+    /// # Errors
+    /// This function will error if any error occurs while unmaking the move.
+    fn unmake_move(&mut self, unmake: Move) -> Result<(), MoveApplicationError>;
+}
\ No newline at end of file