moving working and testing, dev/prod webpack

.github/workflows/test.yml

@@ -18,12 +18,12 @@ jobs:
       - name: Install wasm-pack
         uses: jetli/wasm-pack-action@v0.3.0
 
-      - name: Build Rust for WASM
-        run: wasm-pack build
-
       - name: Test WASM in-browser
         run: wasm-pack test --firefox --chrome --headless
 
+      - name: Build Rust for WASM
+        run: wasm-pack build
+
       - name: Install Node
         uses: actions/setup-node@v2
         with:

src/board/iter.rs

@@ -1,4 +1,5 @@
-use crate::board::{Board, Square};
+use crate::board::{Board, Piece, Square};
+use crate::board::enums::*;
 
 pub struct RowIndexIterator<'a> {
     board: &'a Board,
@@ -67,17 +68,51 @@ impl<'a> Iterator for RowSquareIterator<'a> {
     }
 }
 
+pub struct PieceIterator<'a> {
+    board: &'a Board,
+    index_cursor: usize,
+}
+
+impl<'a> PieceIterator<'a> {
+    pub fn new(board: &'a Board) -> Self {
+        Self { 
+            board, 
+            index_cursor: 0
+        }
+    }
+}
+
+impl<'a> Iterator for PieceIterator<'a> {
+    type Item = (usize, Square);
+    
+    /// Get next item from the iterator
+    fn next(&mut self) -> Option<(usize, Square)> {
+
+        while self.index_cursor < self.board.num_cells() - 1 {
+            self.index_cursor += 1;
+            match self.board.cell(self.index_cursor).state {
+                SquareState::Empty | SquareState::Unplayable => continue,
+                SquareState::Occupied => return Some((self.index_cursor, self.board.cell(self.index_cursor))),
+            }
+        }
+
+        None
+    }
+}
+
 #[cfg(test)]
-mod tests {
+pub mod tests {
     use super::*;
     use crate::board::enums::SquareState;
     use wasm_bindgen_test::*;
 
+    use crate::log;
+
     wasm_bindgen_test_configure!(run_in_browser);
 
     #[wasm_bindgen_test]
     fn index_iterator() {
-        let board = Board::new(2, 2);
+        let board = Board::new(2, 2, Team::Black);
         let iter = RowIndexIterator::new(&board);
         let collected: Vec<Vec<usize>> = iter.collect();
         assert_eq!(vec![
@@ -88,7 +123,7 @@ mod tests {
 
     #[wasm_bindgen_test]
     fn square_iterator() {
-        let board = Board::new(2, 2);
+        let board = Board::new(2, 2, Team::Black);
         let iter = RowSquareIterator::new(&board);
         let collected: Vec<Vec<Square>> = iter.collect();
         assert_eq!(vec![
@@ -103,4 +138,57 @@ mod tests {
         ], collected);
     }
 
+    #[wasm_bindgen_test]
+    fn piece_iterator_one_piece() {
+        let idx = 2;
+
+        let mut board = Board::new(4, 4, Team::Black);
+        board.set_cell(idx, Square::new(
+            SquareState::Occupied, 
+            Some(
+                Piece::new(Team::White, Strength::Man)
+            )
+        ));
+
+        let iter = PieceIterator::new(&board);
+        let collected: Vec<(usize, Square)> = iter.collect();
+
+        assert_eq!(collected.len(), 1);
+        assert_eq!(collected[0], (idx, board.cell(idx)));
+    }
+
+    #[wasm_bindgen_test]
+    fn piece_iterator_multiple_pieces() {
+
+        let mut board = Board::new(4, 4, Team::Black);
+        board.set_cell(2, Square::new(
+            SquareState::Occupied, 
+            Some(
+                Piece::new(Team::White, Strength::Man)
+            )
+        ));
+
+        board.set_cell(4, Square::new(
+            SquareState::Occupied, 
+            Some(
+                Piece::new(Team::Black, Strength::Man)
+            )
+        ));
+
+        board.set_cell(5, Square::new(
+            SquareState::Occupied, 
+            Some(
+                Piece::new(Team::White, Strength::King)
+            )
+        ));
+
+        let iter = PieceIterator::new(&board);
+        let collected: Vec<(usize, Square)> = iter.collect();
+
+        assert_eq!(collected.len(), 3);
+        assert_eq!(collected[0], (2, board.cell(2)));
+        assert_eq!(collected[1], (4, board.cell(4)));
+        assert_eq!(collected[2], (5, board.cell(5)));
+    }
+
 }

src/board/mod.rs

@@ -4,6 +4,9 @@
 
 pub mod enums;
 use enums::*;
+use enums::Team::*;
+use enums::Strength::*;
+use enums::SquareState::*;
 
 pub mod iter;
 use iter::*;
@@ -19,7 +22,7 @@ pub const STD_WIDTH: usize = 8;
 /// Standard height of a checkers board is 8 squares
 pub const STD_HEIGHT: usize = 8;
 
-/// Model a game piece by its team and strength (normal or kinged)
+/// Game piece given by its team and strength (normal or kinged)
 #[wasm_bindgen]
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct Piece {
@@ -27,7 +30,9 @@ pub struct Piece {
     strength: Strength
 }
 
+#[wasm_bindgen]
 impl Piece {
+    #[wasm_bindgen(constructor)]
     pub fn new(team: Team, strength: Strength) -> Piece {
         Piece {
             team, strength
@@ -35,7 +40,7 @@ impl Piece {
     }
 }
 
-/// Model the standard diagonal movements by north west/east etc
+/// Standard diagonal movements given by north west/east etc
 /// 
 /// Used as an absolute measure, i.e. not relative to the team making a move
 /// 
@@ -64,7 +69,7 @@ impl<T: Clone + Copy> Direction<T> {
     }
 }
 
-/// Model board squares by a state and a possible occupying game piece
+/// Board squares given by a state and a possible occupying game piece
 #[wasm_bindgen]
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct Square {
@@ -74,16 +79,32 @@ pub struct Square {
     state: SquareState
 }
 
+#[wasm_bindgen]
 impl Square {
+    #[wasm_bindgen(constructor)]
     pub fn new(state: SquareState, occupant: Option<Piece>) -> Square{
         Square {
             occupant,
             state
         }
     }
+
+    pub fn pc(team: Team, strength: Strength) -> Square {
+        Square {
+            occupant: Some(Piece::new(team, strength)),
+            state: Occupied,
+        }
+    }
+
+    pub fn empty() -> Square {
+        Square {
+            occupant: None,
+            state: Empty,
+        }
+    }
 }
 
-/// Model a rank 2 tensor index to identify a board square by row and column
+/// Rank 2 tensor index to identify a board square by row and column
 #[wasm_bindgen]
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct BrdIdx {
@@ -110,9 +131,9 @@ impl Display for BrdIdx {
 //   BOARD
 ///////////////
 
-/// Models a single state for a checkers board
+/// Single state of a checkers board
 #[wasm_bindgen]
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct Board {
     /// 1D backing array of board squares for the 2D game board
     cells: Vec<Square>,
@@ -122,6 +143,10 @@ pub struct Board {
     current_turn: Team
 }
 
+///////////////////
+//  PRIV FUNCS
+///////////////////
+
 impl Board {
     /// Get a mutable reference to a board square by 1D array index
     pub fn cell_mut(&mut self, idx: usize) -> &mut Square {
@@ -136,7 +161,7 @@ impl Board {
     /// Some(Vec<usize>): A variable length vector of 1D indices for diagonally adjacent squares. 
     /// Vector may be between 1 and 4 items long depending on the location of the given square
     pub fn diagonal_indices(&self, idx: BrdIdx) -> Option<Vec<usize>> {
-        if self.cell_state(self.cell_idx(idx)) == SquareState::Unplayable {
+        if self.cell_state(self.cell_idx(idx)) == Unplayable {
             return None;
         }
 
@@ -186,7 +211,7 @@ impl Board {
     /// 
     /// Some(Direction<Square>): A [`Direction`] structure for the diagonally adjacent squares.
     pub fn adjacent_dir(&self, idx: BrdIdx) -> Option<Direction<Square>> {
-        if self.cell_state(self.cell_idx(idx)) == SquareState::Unplayable {
+        if self.cell_state(self.cell_idx(idx)) == Unplayable {
             return None;
         }
 
@@ -222,8 +247,8 @@ impl Board {
     pub fn filter_indices(&self, idx: BrdIdx, player: Team, indices: Vec<usize>) -> Vec<usize> {
         indices.into_iter().filter(|i| {
             match player {
-                Team::Black => self.board_index(*i).row < idx.row,
+                Black => self.board_index(*i).row < idx.row,
-                Team::White => self.board_index(*i).row > idx.row,
+                White => self.board_index(*i).row > idx.row,
             }
         }).collect()
     }
@@ -243,7 +268,7 @@ impl Board {
     /// Some(Vec<usize>): A variable length vector of 1D indices for diagonally jumpable squares. 
     /// Vector may be between 1 and 4 items long depending on the location of the given square
     pub fn jumpable_indices(&self, idx: BrdIdx) -> Option<Vec<usize>> {
-        if self.cell_state(self.cell_idx(idx)) == SquareState::Unplayable {
+        if self.cell_state(self.cell_idx(idx)) == Unplayable {
             return None;
         }
 
@@ -293,7 +318,7 @@ impl Board {
     /// 
     /// Some(Direction<Square>): A [`Direction`] structure for the diagonally jumpable squares.
     pub fn jumpable_dir(&self, idx: BrdIdx) -> Option<Direction<Square>> {
-        if self.cell_state(self.cell_idx(idx)) == SquareState::Unplayable {
+        if self.cell_state(self.cell_idx(idx)) == Unplayable {
             return None;
         }
 
@@ -331,8 +356,18 @@ impl Board {
             None => None
         }
     }
+
+    /// cast the signed
+    pub fn idx_diffs(from: BrdIdx, to: BrdIdx) -> (isize, isize) {
+        // cast to signed ints so that -1 will work for black moves
+        (to.row as isize - from.row as isize, to.col as isize - from.col as isize)
+    }
 }
 
+///////////////////
+//  BOUND FUNCS
+///////////////////
+
 #[wasm_bindgen]
 impl Board {
     /// Get a copy of a board square by 1D array index
@@ -340,6 +375,15 @@ impl Board {
         self.cells[idx]
     }
 
+    /// Get a copy of a board square by 1D array index
+    pub fn set_cell(&mut self, idx: usize, square: Square) {
+        // TODO: handle this error better?
+        if idx >= self.num_cells() {
+            panic!("Given index is too large, idx: {}, square: {:?}", idx, square);
+        }
+        self.cells[idx] = square;
+    }
+
     /// Get a copy of a board square by 2D [`BrdIdx`] index
     pub fn grid_cell(&self, idx: BrdIdx) -> Square {
         self.cell(self.cell_idx(idx))
@@ -362,6 +406,7 @@ impl Board {
         BrdIdx::from(row, col)
     }
 
+    /// Check whether a move given by source and destination indices is legal 
     pub fn can_move(&self, from: BrdIdx, to: BrdIdx) -> Moveable {
 
         if from.row > self.height - 1 || from.col > self.width - 1 {
@@ -376,9 +421,9 @@ impl Board {
 
         // check source square is occupied
         match from_square.state {
-            SquareState::Empty => return Moveable::UnoccupiedSrc,
+            Empty => return Moveable::UnoccupiedSrc,
-            SquareState::Unplayable => return Moveable::Unplayable,
+            Unplayable => return Moveable::Unplayable,
-            SquareState::Occupied => {
+            Occupied => {
 
                 // if its not the current teams piece then error
                 match from_square.occupant {
@@ -391,29 +436,50 @@ impl Board {
                             return Moveable::WrongTeamSrc;
                         }
 
-                        // cast to signed ints so that -1 will work for black moves
-                        let row_diff: i32 = to.row as i32 - from.row as i32;
-                        let col_diff: i32 = to.col as i32 - from.col as i32;
-
                         // depending on whether the piece is a king or not, the piece can make different moves
+                        // below validate_*_move() functions just check whether the trajectory is valid i.e a single ajacacent diagonal move for moves and 2 squares for a jump
+                        // this includes validating the jumpee when jumping
+                        // 
+                        // we use the Allowed type to indicate that the trajectory check passed
+                        // but we catch it instead of returning to allow further checks on 
+                        // the destination square
                         // TODO: refactor to a IsMove()/IsJump() to check whether the move has a legal trajectory
                         match from_square_occupant.strength {
-                            Strength::Man => self.validate_man_move(from, to, row_diff, col_diff, from_square_occupant),
+                            Man => {
-                            Strength::King => self.validate_king_move(from, to, row_diff, col_diff, from_square_occupant),
+                                let strength_check = self.validate_man_move(from, to, from_square_occupant);
+                                if strength_check != Moveable::Allowed {
+                                    return strength_check;
+                                }
+                            },
+                            King => {
+                                let strength_check = self.validate_king_move(from, to, from_square_occupant);
+                                if strength_check != Moveable::Allowed {
+                                    return strength_check;
+                                }
+                            },
                         };
+
+                        let to_square = self.cell(self.cell_idx(to));
+                        match to_square.state {
+                            Empty => {
+                                return Moveable::Allowed;
+                            },
+                            Unplayable => return Moveable::Unplayable,
+                            Occupied => return Moveable::OccupiedDest,
+                        }
                     }
                 }
             },
         }
-
-        Moveable::Allowed
     }
 
-    pub fn validate_man_move(&self, from: BrdIdx, to: BrdIdx, row_diff: i32, col_diff: i32, from_square_occupant: Piece) -> Moveable {
+    pub fn validate_man_move(&self, from: BrdIdx, to: BrdIdx, from_square_occupant: Piece) -> Moveable {
+        let (row_diff, col_diff) = Board::idx_diffs(from, to);
+
         // men can only move forwards, below is row difference for each team
-        let idx_scale: i32 = match self.current_turn {
+        let idx_scale: isize = match self.current_turn {
-            Team::Black => -1,
+            Black => -1,
-            Team::White => 1,
+            White => 1,
         };
 
         // legal standard move 
@@ -433,14 +499,14 @@ impl Board {
             if col_diff.abs() == 2 {
 
                 // piece to be jumped over
-                let jumpee = self.get_jumpee(from, row_diff, col_diff);
+                let jumpee = self.cell(self.jumpee_idx(from, to));
                 match jumpee.state {
-                    SquareState::Empty => Moveable::NoJumpablePiece,
+                    Empty => Moveable::NoJumpablePiece,
-                    SquareState::Unplayable => panic!("Found an unplayable piece to try to jump over, from: {}, to: {}, jumpee: {:?}", from, to, jumpee),
+                    Unplayable => panic!("Found an unplayable piece to try to jump over, from: {}, to: {}, jumpee: {:?}", from, to, jumpee),
-                    SquareState::Occupied => {
+                    Occupied => {
 
                         // check whether jumpee is an opponent's piece
-                        return Board::validate_jumpee(jumpee, from, to, from_square_occupant);
+                        return Board::validate_jumpee(jumpee, from_square_occupant);
                     },
                 }
             } 
@@ -455,7 +521,9 @@ impl Board {
         }
     }
 
-    pub fn validate_king_move(&self, from: BrdIdx, to: BrdIdx, row_diff: i32, col_diff: i32, from_square_occupant: Piece) -> Moveable {
+    pub fn validate_king_move(&self, from: BrdIdx, to: BrdIdx, from_square_occupant: Piece) -> Moveable {
+        let (row_diff, col_diff) = Board::idx_diffs(from, to);
+
         // legal standard move 
         if row_diff.abs() == 1 {
             // destination is directly to the left or right
@@ -473,14 +541,14 @@ impl Board {
             if col_diff.abs() == 2 {
 
                 // piece to be jumped over
-                let jumpee = self.get_jumpee(from, row_diff, col_diff);
+                let jumpee = self.cell(self.jumpee_idx(from, to));
                 match jumpee.state {
-                    SquareState::Empty => Moveable::NoJumpablePiece,
+                    Empty => Moveable::NoJumpablePiece,
-                    SquareState::Unplayable => panic!("Found an unplayable piece to try to jump over, from: {}, to: {}, jumpee: {:?}", from, to, jumpee),
+                    Unplayable => panic!("Found an unplayable piece to try to jump over, from: {}, to: {}, jumpee: {:?}", from, to, jumpee),
-                    SquareState::Occupied => {
+                    Occupied => {
 
                         // check whether jumpee is an opponent's piece
-                        return Board::validate_jumpee(jumpee, from, to, from_square_occupant);
+                        return Board::validate_jumpee(jumpee, from_square_occupant);
                     },
                 }
             } 
@@ -495,20 +563,20 @@ impl Board {
         }
     }
 
-    pub fn get_jumpee(&self, from: BrdIdx, row_diff: i32, col_diff: i32) -> Square {
+    pub fn jumpee_idx(&self, from: BrdIdx, to: BrdIdx) -> usize {
-        self.cell(
+        let (row_diff, col_diff) = Board::idx_diffs(from, to);
-            self.cell_idx(
+        self.cell_idx(
-                BrdIdx::from(
+            BrdIdx::from(
-                    ((from.row as i32) + row_diff / 2) as usize, 
+                ((from.row as isize) + row_diff / 2) as usize, 
-                    ((from.col as i32) + col_diff / 2) as usize)
+                ((from.col as isize) + col_diff / 2) as usize)
-                )
             )
     }
 
-    pub fn validate_jumpee(jumpee: Square, from: BrdIdx, to: BrdIdx, from_occ: Piece) -> Moveable {
+    /// Unwrap the jumpee piece from the square and [`Board::check_jumpee_team`] with [`Moveable`] response
+    pub fn validate_jumpee(jumpee: Square, from_occ: Piece) -> Moveable {
         // check whether jumpee is an opponent's piece
         match jumpee.occupant {
-            None => panic!("No occupant found when checking the jumpee, from: {}, to: {}, jumpee: {:?}", from, to, jumpee),
+            None => panic!("No occupant found when checking the from: {:?} , jumpee: {:?}", from_occ, jumpee),
             Some(jumpee_occupant_uw) => {
                 if Board::check_jumpee_team(from_occ, jumpee_occupant_uw) {
                     return Moveable::Allowed;
@@ -520,13 +588,14 @@ impl Board {
         }
     }
 
-
+    /// Check that the source piece and the jumpee are of opposing teams
     pub fn check_jumpee_team(from: Piece, jumpee: Piece) -> bool {
         return from.team.opponent() == jumpee.team
     }
 
-    /// Iniitalise a game board without game pieces
+    /// Initialise a game board without game pieces
-    pub fn new(width: usize, height: usize) -> Board {
+    #[wasm_bindgen(constructor)]
+    pub fn new(width: usize, height: usize, current_turn: Team) -> Board {
         let total_cells = width * height;
 
         let mut cells: Vec<Square>  = Vec::with_capacity(total_cells);
@@ -535,10 +604,10 @@ impl Board {
         for i in 0..height {
             for _ in 0..width {
                 if playable {
-                    cells.push(Square::new(SquareState::Empty, None));
+                    cells.push(Square::new(Empty, None));
                 }
                 else {
-                    cells.push(Square::new(SquareState::Unplayable, None));
+                    cells.push(Square::new(Unplayable, None));
                 }
                 playable = !playable;
             }
@@ -550,33 +619,27 @@ impl Board {
             width,
             height,
 
-            current_turn: Team::Black
+            current_turn
         }
     }
 
     /// Reset the given board to a starting layout with 3 rows of opposing pieces
-    pub fn init_game(board: Board) -> Board {
+    pub fn init_game(board: Board, piece_rows: usize) -> Board {
         let mut new_board = board.clone();
         for (idx, row) in RowSquareIterator::new(&board).enumerate() {
             for (jdx, square) in row.iter().enumerate() {
 
-                if square.state == SquareState::Empty || square.state == SquareState::Occupied {
+                if square.state == Empty || square.state == Occupied {
-                    if idx < 3 {
+                    if idx < piece_rows {
                         let cell_idx = new_board.cell_index(idx, jdx);
-                        new_board.cells[cell_idx] = Square::new(
+                        new_board.cells[cell_idx] = Square::pc(White, Man);
-                            SquareState::Occupied, 
+                    } else if idx >= board.height - piece_rows {
-                            Some(Piece::new(Team::White, Strength::Man))
-                        );
-                    } else if idx >= board.height - 3 {
                         let cell_idx = new_board.cell_index(idx, jdx);
-                        new_board.cells[cell_idx] = Square::new(
+                        new_board.cells[cell_idx] = Square::pc(Black, Man);
-                            SquareState::Occupied, 
-                            Some(Piece::new(Team::Black, Strength::Man))
-                        );
                     } else {
                         let cell_idx = new_board.cell_index(idx, jdx);
                         new_board.cells[cell_idx] = Square::new(
-                            SquareState::Empty, 
+                            Empty, 
                             None
                         );
                     }
@@ -592,6 +655,10 @@ impl Board {
         self.current_turn
     }
 
+    pub fn set_turn(&mut self, new_team: Team) {
+        self.current_turn = new_team;
+    }
+
     /// Get a pointer to the backing array of board squares, [`Board::cells`]
     pub fn cells(&self) -> *const Square {
         self.cells.as_ptr()
@@ -602,6 +669,49 @@ impl Board {
         self.cells.len()
     }
 
+    /// Get the number of remaining pieces
+    pub fn num_pieces(&self) -> usize {
+        let pieces: Vec<_> = PieceIterator::new(self).collect();
+        pieces.len()
+    }
+
+    /// Get the number of remaining pieces for a player
+    pub fn num_player(&self, team: Team) -> usize {
+        let mut total = 0;
+        for (_, square) in PieceIterator::new(self) {
+            match square.occupant {
+                None => {},
+                Some(x) => {
+                    if x.team == team {
+                        total += 1;
+                    }
+                },
+            }
+        }
+        total
+    }
+
+    /// Get the score value, Black - White pieces
+    pub fn score(&self) -> isize {
+        let mut black: isize = 0;
+        let mut white: isize = 0;
+
+        for (_, square) in PieceIterator::new(self) {
+            if let Some(x) = square.occupant {
+                match x.team {
+                    Black => {
+                        black += 1;
+                    },
+                    White => {
+                        white += 1;
+                    },
+                }
+            }
+        }
+
+        black - white
+    }
+
     /// Get the state of a board square by 1D array index
     pub fn cell_state(&self, idx: usize) -> SquareState {
         self.cell(idx).state
@@ -617,9 +727,9 @@ impl Display for Board {
                 let idx = self.cell_index(i, j);
 
                 match self.cell_state(idx) {
-                    SquareState::Empty => { write!(string, "{}", SquareState::Empty); },
+                    Empty => { write!(string, "_ "); },
-                    SquareState::Occupied => { write!(string, "{}", self.cell(idx).occupant.unwrap().team); },
+                    Occupied => { write!(string, "{} ", self.cell(idx).occupant.unwrap().team); },
-                    SquareState::Unplayable => { write!(string, "{}", SquareState::Unplayable); },
+                    Unplayable => { write!(string, ". "); },
                 }
             }
             string.push('\n');

src/board/tests.rs

@@ -7,47 +7,73 @@ wasm_bindgen_test_configure!(run_in_browser);
 
 // #[wasm_bindgen_test]
 // fn init_game() {
-//     let board = Board::init_game(Board::new(8, 8));
+//     let board = Board::init_game(Board::new(8, 8, Black), 3);
 //     log!("{}", board);
 // }
 
 #[wasm_bindgen_test]
 fn create() {
-    let board = Board::new(STD_WIDTH, STD_HEIGHT);
+    let board = Board::new(STD_WIDTH, STD_HEIGHT, Black);
     assert!(true);
 }
 
 #[wasm_bindgen_test]
 fn std_num_cells() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(64, board.num_cells());
 }
 
+#[wasm_bindgen_test]
+fn idx_diffs() {
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(2, 2);
+    assert_eq!(Board::idx_diffs(from, to), (1, 1));
+
+    let from = BrdIdx::from(2, 2);
+    let to = BrdIdx::from(1, 1);
+    assert_eq!(Board::idx_diffs(from, to), (-1, -1));
+
+    let from = BrdIdx::from(5, 0);
+    let to = BrdIdx::from(0, 10);
+    assert_eq!(Board::idx_diffs(from, to), (-5, 10));
+}
+
+#[wasm_bindgen_test]
+fn set_cell() {
+    let idx = 1;
+
+    let mut board = Board::new(8, 8, Black);
+    let square = Square::new(Occupied, Some(Piece::new(White, Man)));
+
+    board.set_cell(idx, square);
+    assert_eq!(square, board.cell(idx));
+}
+
 //////////////
 // INDEXING
 //////////////
 
 #[wasm_bindgen_test]
 fn cell_index_top_left() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(0, board.cell_index(0, 0));
 }
 
 #[wasm_bindgen_test]
 fn cell_index_central() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(9, board.cell_index(1, 1));
 }
 
 #[wasm_bindgen_test]
 fn cell_index_central_2() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(17, board.cell_index(2, 1));
 }
 
 #[wasm_bindgen_test]
 fn board_index() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
 
     // first row
     assert_eq!(BrdIdx::from(0, 5), board.board_index(5));
@@ -63,14 +89,14 @@ fn board_index() {
 
 #[wasm_bindgen_test]
 fn first_square_unplayable() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
-    assert_eq!(SquareState::Unplayable, board.cell_state(board.cell_index(0, 0)));
+    assert_eq!(Unplayable, board.cell_state(board.cell_index(0, 0)));
 }
 
 #[wasm_bindgen_test]
 fn first_square_row_5_unplayable() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
-    assert_eq!(SquareState::Empty, board.cell_state(board.cell_index(5, 0)));
+    assert_eq!(Empty, board.cell_state(board.cell_index(5, 0)));
 }
 
 //////////////////////
@@ -79,7 +105,7 @@ fn first_square_row_5_unplayable() {
 
 #[wasm_bindgen_test]
 fn moveable_indices_unplayable() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(None, board.diagonal_indices(BrdIdx::from(7, 7)));
     assert_eq!(None, board.diagonal_indices(BrdIdx::from(0, 0)));
     assert_eq!(None, board.diagonal_indices(BrdIdx::from(1, 1)));
@@ -87,43 +113,43 @@ fn moveable_indices_unplayable() {
 
 #[wasm_bindgen_test]
 fn moveable_indices_central() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![1, 3, 17, 19]), board.diagonal_indices(BrdIdx::from(1, 2)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_top_row() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![8, 10]), board.diagonal_indices(BrdIdx::from(0, 1)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_left_column() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![1, 17]), board.diagonal_indices(BrdIdx::from(1, 0)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_bottom_row() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![49, 51]), board.diagonal_indices(BrdIdx::from(7, 2)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_right_column() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![14, 30]), board.diagonal_indices(BrdIdx::from(2, 7)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_top_right() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![14]), board.diagonal_indices(BrdIdx::from(0, 7)));
 }
 
 #[wasm_bindgen_test]
 fn moveable_indices_bottom_left() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![49]), board.diagonal_indices(BrdIdx::from(7, 0)));
 }
 
@@ -133,7 +159,7 @@ fn moveable_indices_bottom_left() {
 
 #[wasm_bindgen_test]
 fn jumpable_indices_unplayable() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(None, board.jumpable_indices(BrdIdx::from(7, 7)));
     assert_eq!(None, board.jumpable_indices(BrdIdx::from(0, 0)));
     assert_eq!(None, board.jumpable_indices(BrdIdx::from(1, 1)));
@@ -141,70 +167,320 @@ fn jumpable_indices_unplayable() {
 
 #[wasm_bindgen_test]
 fn jumpable_indices() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![24, 28]), board.jumpable_indices(BrdIdx::from(1, 2)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_central() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![10, 14, 42, 46]), board.jumpable_indices(BrdIdx::from(3, 4)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_top_row() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![19]), board.jumpable_indices(BrdIdx::from(0, 1)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_left_column() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![26]), board.jumpable_indices(BrdIdx::from(1, 0)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_bottom_row() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![40, 44]), board.jumpable_indices(BrdIdx::from(7, 2)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_right_column() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![5, 37]), board.jumpable_indices(BrdIdx::from(2, 7)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_top_right() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![21]), board.jumpable_indices(BrdIdx::from(0, 7)));
 }
 
 #[wasm_bindgen_test]
 fn jumpable_indices_bottom_left() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
     assert_eq!(Some(vec![42]), board.jumpable_indices(BrdIdx::from(7, 0)));
 }
 
 #[wasm_bindgen_test]
 fn black_diagonal_indices() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
-    assert_eq!(Some(vec![1, 3]), board.player_diagonal_indices(BrdIdx::from(1, 2), Team::Black));
+    assert_eq!(Some(vec![1, 3]), board.player_diagonal_indices(BrdIdx::from(1, 2), Black));
 }
 
 #[wasm_bindgen_test]
 fn white_diagonal_indices() {
-    let board = Board::new(8, 8);
+    let board = Board::new(8, 8, Black);
-    assert_eq!(Some(vec![17, 19]), board.player_diagonal_indices(BrdIdx::from(1, 2), Team::White));
+    assert_eq!(Some(vec![17, 19]), board.player_diagonal_indices(BrdIdx::from(1, 2), White));
 }
 
 ////////////////
-// JUMPEE
+//   JUMPEE
 ////////////////
  
-// #[wasm_bindgen_test]
+#[wasm_bindgen_test]
-// fn check_jumpee() {
+fn check_jumpee_opposing_teams() {
-//     let from = 
+    let from = Piece::new(Black, Man); 
-//     assert_eq!(Board::check_jumpee_team(from: Piece, jumpee: Piece));
+    let jumpee = Piece::new(White, Man); 
-// }
+    assert_eq!(Board::check_jumpee_team(from, jumpee), true);
+
+    let from = Piece::new(White, Man); 
+    let jumpee = Piece::new(Black, Man); 
+    assert_eq!(Board::check_jumpee_team(from, jumpee), true);
+}
+
+#[wasm_bindgen_test]
+fn check_jumpee_same_teams() {
+    let from = Piece::new(Black, Man); 
+    let jumpee = Piece::new(Black, Man); 
+    assert_eq!(Board::check_jumpee_team(from, jumpee), false);
+
+    let from = Piece::new(White, Man); 
+    let jumpee = Piece::new(White, Man); 
+    assert_eq!(Board::check_jumpee_team(from, jumpee), false);
+}
+
+#[wasm_bindgen_test]
+fn check_validate_jumpee_opposing_teams() {
+    let jumpee_square = Square::new(
+        Occupied, 
+        Some(
+            Piece::new(White, Man)
+        )
+    );
+    let from_piece = Piece::new(Black, Man);
+
+    assert_eq!(Board::validate_jumpee(jumpee_square, from_piece), Moveable::Allowed);
+
+    let jumpee_square = Square::new(
+        Occupied, 
+        Some(
+            Piece::new(Black, Man)
+        )
+    );
+    let from_piece = Piece::new(White, Man);
+
+    assert_eq!(Board::validate_jumpee(jumpee_square, from_piece), Moveable::Allowed);
+}
+
+#[wasm_bindgen_test]
+fn check_validate_jumpee_same_teams() {
+    let jumpee_square = Square::pc(White, Man);
+    let from_piece = Piece::new(White, Man);
+
+    assert_eq!(Board::validate_jumpee(jumpee_square, from_piece), Moveable::JumpingSameTeam);
+
+    let jumpee_square = Square::pc(Black, Man);
+    let from_piece = Piece::new(Black, Man);
+
+    assert_eq!(Board::validate_jumpee(jumpee_square, from_piece), Moveable::JumpingSameTeam);
+}
+
+/////////////////
+//    SCORE
+/////////////////
+
+#[wasm_bindgen_test]
+fn score() {
+    //////////////////////////////////
+    let board = Board::new(8, 8, Black);    
+    assert_eq!(0, board.score());
+    //////////////////////////////////
+
+    //////////////////////////////////
+    let mut board = Board::new(8, 8, Black);
+    let square = Square::pc(Black, Man);
+    board.set_cell(1, square);
+    assert_eq!(1, board.score());
+    //////////////////////////////////
+
+    //////////////////////////////////
+    let square = Square::pc(White, Man);
+    board.set_cell(5, square);
+    let square = Square::pc(Black, Man);
+    board.set_cell(7, square);
+    let square = Square::pc(Black, Man);
+    board.set_cell(8, square);
+    assert_eq!(2, board.score());
+    //////////////////////////////////
+}
+
+///////////////////////
+//  MOVE VALIDATION
+///////////////////////
+
+#[wasm_bindgen_test]
+fn validate_man_move_team_directions() {
+    // WHITE NEEDS INCREASING IDX
+
+    // allowed, white moves down board
+    let board = Board::new(8, 8, White);
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(2, 2);
+    let piece = Piece::new(White, Man);
+
+    assert_eq!(Moveable::Allowed, board.validate_man_move(from, to, piece));
+
+    // unallowed, white moves up board
+    let board = Board::new(8, 8, White);
+    let from = BrdIdx::from(2, 2);
+    let to = BrdIdx::from(1, 1);
+    let piece = Piece::new(White, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+
+    // allowed, black moves up board
+    let board = Board::new(8, 8, Black);
+    let from = BrdIdx::from(2, 2);
+    let to = BrdIdx::from(1, 1);
+    let piece = Piece::new(Black, Man);
+
+    assert_eq!(Moveable::Allowed, board.validate_man_move(from, to, piece));
+
+    // unallowed, black moves down board
+    let board = Board::new(8, 8, Black);
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(2, 2);
+    let piece = Piece::new(Black, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+}
+
+#[wasm_bindgen_test]
+fn validate_man_move_weird_trajectories() {
+    // WHITE NEEDS INCREASING IDX
+
+    // allowed, white moves down board
+    let board = Board::new(8, 8, White);
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(3, 2);
+    let piece = Piece::new(White, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+
+    // unallowed, white moves up board
+    let board = Board::new(8, 8, White);
+    let from = BrdIdx::from(2, 3);
+    let to = BrdIdx::from(1, 1);
+    let piece = Piece::new(White, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+
+    // allowed, black moves up board
+    let board = Board::new(8, 8, Black);
+    let from = BrdIdx::from(5, 2);
+    let to = BrdIdx::from(1, 1);
+    let piece = Piece::new(Black, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+
+    // unallowed, black moves down board
+    let board = Board::new(8, 8, Black);
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(2, 4);
+    let piece = Piece::new(Black, Man);
+
+    assert_eq!(Moveable::IllegalTrajectory, board.validate_man_move(from, to, piece));
+}
+
+#[wasm_bindgen_test]
+fn can_move() {
+    // WHITE NEEDS INCREASING IDX
+
+    // allowed, white moves down board
+    let board = Board::new(8, 8, White);
+    let mut board = Board::init_game(board, 3);
+
+    // log!("{}", board);
+
+    // white can move down
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(3, 0);
+    assert_eq!(board.can_move(from, to), Moveable::Allowed);
+
+    // going straight down
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(3, 1);
+    assert_eq!(board.can_move(from, to), Moveable::IllegalTrajectory);
+
+    // going directly right
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(2, 2);
+    assert_eq!(board.can_move(from, to), Moveable::IllegalTrajectory);
+
+    // jumping an empty square
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::NoJumpablePiece);
+
+    // empty cell
+    let from = BrdIdx::from(3, 0);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::UnoccupiedSrc);
+
+    // out of board
+    let from = BrdIdx::from(50, 50);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::OutOfBounds);
+    let from = BrdIdx::from(5, 5);
+    let to = BrdIdx::from(50, 50);
+    assert_eq!(board.can_move(from, to), Moveable::OutOfBounds);
+
+    // unplayable
+    let from = BrdIdx::from(0, 0);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::Unplayable);
+    let from = BrdIdx::from(1, 1);
+    let to = BrdIdx::from(0, 0);
+    assert_eq!(board.can_move(from, to), Moveable::Unplayable);
+
+    board.set_turn(Black);
+
+    // wrong teams piece
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::WrongTeamSrc);
+
+}
+
+#[wasm_bindgen_test]
+fn can_move_jump() {
+    // WHITE NEEDS INCREASING IDX
+
+    // allowed, white moves down board
+    let board = Board::new(8, 8, White);
+    let mut board = Board::init_game(board, 3);
+
+    board.set_cell(board.cell_index(3, 2), Square::pc(Black, Man));
+
+    // log!("{}", board);
+    // log!("{:?}", board.cell(board.cell_index(3, 2)));
+
+    // white can move down
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::Allowed);
+
+    board.set_cell(board.cell_index(3, 2), Square::pc(White, Man));
+
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(4, 3);
+    assert_eq!(board.can_move(from, to), Moveable::JumpingSameTeam);
+
+    // moving in to full cell
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(3, 2);
+    assert_eq!(board.can_move(from, to), Moveable::OccupiedDest);
+
+}

src/game.rs

@@ -1,13 +0,0 @@
-use crate::board::Board;
-use indextree::Arena;
-
-extern crate wasm_bindgen;
-use wasm_bindgen::prelude::*;
-
-/// Root-level structure for managing the game as a collection of board states
-#[wasm_bindgen]
-pub struct Game {
-    current: Board,
-    previous_boards: Vec<Board>,
-    tree: Arena<Board>
-}

src/game/mod.rs

@@ -0,0 +1,142 @@
+use crate::board::Board;
+use indextree::Arena;
+
+extern crate wasm_bindgen;
+use wasm_bindgen::prelude::*;
+
+use crate::log;
+
+use crate::board::{Square, BrdIdx};
+use crate::board::enums::{SquareState, Moveable, Team};
+
+use Team::*;
+use SquareState::*;
+
+use std::fmt::{Display, Write};
+
+#[cfg(test)] pub mod tests;
+
+/// Root-level structure for managing the game as a collection of board states
+#[wasm_bindgen]
+#[derive(Debug)]
+pub struct Game {
+    current: Board,
+    previous_boards: Vec<Board>,
+    // tree: Arena<Board>
+}
+
+impl Game {
+    /// Get a read-only copy of a previous turn's board
+    pub fn previous_board(&self, turn: usize) -> &Board {
+        &self.previous_boards[turn]
+    }
+
+    /// Set current board to given
+    pub fn current_board(&self) -> &Board {
+        &self.current
+    }
+}
+
+#[wasm_bindgen]
+impl Game {
+    /// Attempt to make a move given a source and destination index
+    pub fn make_move(&mut self, from: BrdIdx, to: BrdIdx) {
+        let able = self.current.can_move(from, to);
+
+        if let Moveable::Allowed = able {
+            let (_, col_diff) = Board::idx_diffs(from, to);
+            // MOVE
+            if col_diff.abs() == 1 {
+                self.execute_move(from, to);
+            } 
+            // JUMP
+            else {
+                self.execute_jump(from, to);
+            }
+        } else {
+            log!("Unable to make move, {:?}", able);
+        }
+
+        // board has been changed, update player turn
+        self.current.set_turn(self.current.current_turn().opponent());
+    }
+
+    /// Update board state with given move and push new board into current state
+    pub fn execute_move(&mut self, from: BrdIdx, to: BrdIdx) {
+        let mut new_board = self.current.clone();
+
+        let from_idx = self.current.cell_idx(from);
+        let to_idx = self.current.cell_idx(to);
+
+        // make move update
+        new_board.set_cell(
+            to_idx, // destination square
+            self.current.cell(from_idx) // source piece
+        );
+
+        // remove old piece
+        new_board.set_cell(
+            from_idx, // destination square
+            Square::empty() // empty piece
+        );
+
+        // set new board to current and push current to stack
+        self.push_new_board(new_board);
+    }
+
+    /// Update board state with given jump move and push new board into current state
+    pub fn execute_jump(&mut self, from: BrdIdx, to: BrdIdx) {
+        let mut new_board = self.current.clone();
+
+        let from_idx = self.current.cell_idx(from);
+        let to_idx = self.current.cell_idx(from);
+
+        // make move update
+        new_board.set_cell(
+            to_idx, // destination square
+            self.current.cell(from_idx) // source piece
+        );
+
+        // remove old piece
+        new_board.set_cell(
+            from_idx, // destination square
+            Square::empty() // empty piece
+        );
+
+        // remove jumpee
+        new_board.set_cell(
+            self.current.jumpee_idx(from, to), // destination square
+            Square::empty() // empty piece
+        );
+
+        // set new board to current and push current to stack
+        self.push_new_board(new_board);
+    }
+
+    /// Push current board into the previous turns and set given board to current
+    pub fn push_new_board(&mut self, board: Board) {
+        self.previous_boards.push(self.current.clone());
+        self.set_current(board);
+    }
+
+    /// Set current board to given
+    pub fn set_current(&mut self, board: Board) {
+        self.current = board;
+    }
+
+    #[wasm_bindgen(constructor)]
+    pub fn new(width: usize, height: usize, piece_rows: usize, first_turn: Team) -> Game {
+        Game {
+            current: Board::init_game(
+                Board::new(width, height, first_turn), piece_rows,
+            ),
+            previous_boards: Vec::with_capacity(10),
+        }
+    }
+}
+
+impl Display for Game {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result{
+        write!(f, "{}", self.current)
+    }
+}

src/game/tests.rs

@@ -0,0 +1,59 @@
+use super::*;
+use wasm_bindgen_test::*;
+use crate::log;
+
+wasm_bindgen_test_configure!(run_in_browser);
+
+use crate::board::{Piece};
+use crate::board::enums::Strength::*;
+
+
+#[wasm_bindgen_test]
+fn make_move() {
+    let mut game = Game::new(8, 8, 3, Black);
+    log!("{}", game);
+    // log!("{:?}", game);
+
+    let from = BrdIdx::from(5, 2);
+    let to = BrdIdx::from(4, 1);
+
+    game.make_move(from, to);
+    let board = game.current_board();
+
+    assert_eq!(board.cell(board.cell_index(4, 1)), Square::pc(Black, Man));
+
+    log!("{}", game);
+
+    let from = BrdIdx::from(2, 1);
+    let to = BrdIdx::from(3, 2);
+
+    game.make_move(from, to);
+    let board = game.current_board();
+    
+    assert_eq!(board.cell(board.cell_index(3, 2)), Square::pc(White, Man));
+
+    log!("{}", game);
+    // log!("{}", game.previous_board(0));
+}
+
+#[wasm_bindgen_test]
+fn make_jump() {
+    let mut game = Game::new(8, 8, 3, Black);
+    // log!("{}", game);
+    // log!("{:?}", game);
+
+    let square = Square::pc(White, Man);
+    game.current.set_cell(
+        game.current.cell_idx(BrdIdx::from(4, 1)), 
+        square
+    );
+
+    let from = BrdIdx::from(5, 2);
+    let to = BrdIdx::from(3, 0);
+
+    game.make_move(from, to);
+
+    // log!("{}", game);
+    // log!("{}", game.previous_board(0));
+}
+

src/lib.rs

@@ -5,6 +5,7 @@
 pub mod board;
 pub mod utils;
 pub mod game;
+pub mod player;
 
 extern crate wasm_bindgen;
 use wasm_bindgen::prelude::*;

src/player.rs

@@ -0,0 +1,8 @@
+extern crate wasm_bindgen;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+#[derive(Clone)]
+pub struct Player {
+    score: usize,
+}

www/package-lock.json

@@ -14,7 +14,8 @@
         "copy-webpack-plugin": "^9.0.0",
         "webpack": "^5.40.0",
         "webpack-cli": "^4.7.2",
-        "webpack-dev-server": "^3.11.2"
+        "webpack-dev-server": "^3.11.2",
+        "webpack-merge": "^5.8.0"
       }
     },
     "../pkg": {

www/package.json

@@ -4,8 +4,9 @@
   "description": "Rust wasm-based checkers game",
   "main": "index.js",
   "scripts": {
-    "build": "webpack --config webpack.config.js",
+    "build": "webpack --config webpack.prod.js --env production",
-    "start": "webpack serve --config webpack.config.js --progress"
+    "devbuild": "webpack --config webpack.dev.js",
+    "start": "webpack serve --config webpack.dev.js --progress"
   },
   "repository": {
     "type": "git",
@@ -29,6 +30,7 @@
     "copy-webpack-plugin": "^9.0.0",
     "webpack": "^5.40.0",
     "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "^3.11.2"
+    "webpack-dev-server": "^3.11.2",
+    "webpack-merge": "^5.8.0"
   }
 }

www/webpack.common.js

@@ -7,7 +7,6 @@ module.exports = {
     path: path.resolve(__dirname, "dist"),
     filename: "bootstrap.js",
   },
-  mode: "development",
   experiments: {
     asyncWebAssembly: true
   },

www/webpack.dev.js

@@ -0,0 +1,8 @@
+const { merge } = require('webpack-merge');
+const common = require('./webpack.common.js');
+
+module.exports = merge(common, {
+	mode: 'development',
+	devtool: 'inline-source-map',
+	watch: true
+});

www/webpack.prod.js

@@ -0,0 +1,7 @@
+const { merge } = require('webpack-merge');
+const common = require('./webpack.common.js');
+
+module.exports = merge(common, {
+	mode: 'production',
+	devtool: 'source-map'
+});