implemented bisic moves

README.md

@@ -89,4 +89,6 @@ La position de toutes les pièces sont échangées aléatoirement.
 ### La parrure
 Une reine est dégradée en pion
 ### Tricherie
-Regarde les trois prochaines cartes de la pioche
+Regarde les trois prochaines cartes de la pioche
+### Tout ou rien
+Une pièce choisie ne peut maintenant se déplacer que si elle capture

engine/core/movement/generateMoves.js

@@ -0,0 +1,50 @@
+// Utilities for movement generation
+// The movement modules receive a context object with at least:
+// - board: instance exposing getWidth(), getHeight(), getCell(x,y) and setPiece(x,y,piece)
+// - from: { x, y }
+// - piece: the moving piece (with getColor())
+
+/**
+ * Walk in linear directions (array of dx,dy) until blocked.
+ * Returns an array of move objects: { x, y, capture: boolean }
+ *
+ * Options:
+ * - maxSteps (default: Infinity)
+ * - allowCapture=true
+ * - allowEmpty=true
+ */
+export function generateLinearMoves({ board, from, piece, directions, maxSteps = Infinity, allowCapture = true, allowEmpty = true }) {
+    const moves = [];
+    const w = board.getWidth();
+    const h = board.getHeight();
+    const color = piece.getColor();
+
+    for (const [dx, dy] of directions) {
+        let steps = 0;
+        let x = from.x + dx;
+        let y = from.y + dy;
+
+        while (x >= 0 && x < w && y >= 0 && y < h && steps < maxSteps) {
+            const cell = board.getCell(x, y);
+            const target = cell?.piece ?? null;
+
+            if (target == null) {
+                if (allowEmpty) moves.push({ x, y, capture: false });
+                // continue along this direction
+            } else {
+                // occupied
+                if (target.getColor() !== color) {
+                    if (allowCapture) moves.push({ x, y, capture: true });
+                }
+                // stop after encountering any piece
+                break;
+            }
+
+            steps++;
+            x += dx;
+            y += dy;
+        }
+    }
+
+    return moves;
+}

engine/core/movement/index.js

@@ -0,0 +1,13 @@
+// Central export for movement modules
+import {RookMove, BishopMove, KnightMove, QueenMove, KingMove, PawnMove} from './moves.js';
+import { generateLinearMoves } from './generateMoves.js';
+
+export default {
+    RookMove,
+    BishopMove,
+    KnightMove,
+    QueenMove,
+    KingMove,
+    PawnMove,
+    generateLinearMoves,
+};

engine/core/movement/moves.js

@@ -0,0 +1,172 @@
+import { generateLinearMoves } from './generateMoves.js';
+
+class RookMove {
+    /**
+     * Return possible moves for a rook-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     *
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const orthogonals = [
+            [1, 0],
+            [-1, 0],
+            [0, 1],
+            [0, -1],
+        ];
+
+        return generateLinearMoves({
+            board: ctx.board,
+            from: ctx.from,
+            piece: ctx.piece,
+            directions: orthogonals,
+        });
+    }
+}
+
+class BishopMove {
+    /**
+     * Return possible moves for a bishop-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     * 
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const diagonals = [
+            [1, 1],
+            [1, -1],
+            [-1, 1],
+            [-1, -1],
+        ];
+
+        return generateLinearMoves({
+            board: ctx.board,
+            from: ctx.from,
+            piece: ctx.piece,
+            directions: diagonals,
+        });
+    }
+}
+
+class KnightMove {
+    /**
+     * Return possible moves for a knight-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     *
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const knightMoves = [
+            [2, 1], [2, -1], [-2, 1], [-2, -1],
+            [1, 2], [1, -2], [-1, 2], [-1, -2],
+        ];
+
+        return generateLinearMoves({
+            board: ctx.board,
+            from: ctx.from,
+            piece: ctx.piece,
+            directions: knightMoves,
+            maxSteps: 1,
+            allowEmpty: true,
+            allowCapture: true,
+        });
+
+    }
+}
+
+class QueenMove {
+    /**
+     * Return possible moves for a queen-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     *
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const directions = [
+            [1, 0], [-1, 0], [0, 1], [0, -1], // orthogonals
+            [1, 1], [1, -1], [-1, 1], [-1, -1], // diagonals
+        ];
+
+        return generateLinearMoves({
+            board: ctx.board,
+            from: ctx.from,
+            piece: ctx.piece,
+            directions: directions,
+        });
+    }
+}
+
+class KingMove {
+    /**
+     * Return possible moves for a king-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     *
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const directions = [
+            [1, 0], [-1, 0], [0, 1], [0, -1], // orthogonals
+            [1, 1], [1, -1], [-1, 1], [-1, -1], // diagonals
+        ];
+
+        return generateLinearMoves({
+            board: ctx.board,
+            from: ctx.from,
+            piece: ctx.piece,
+            directions: directions,
+            maxSteps: 1,
+        });
+    }
+}
+
+class PawnMove {
+    /**
+     * Return possible moves for a pawn-like piece from `from` on the given `board`.
+     * The move format is { x, y, capture: boolean }
+     *
+     * ctx: { board, from: {x,y}, piece }
+     */
+    static moves(ctx) {
+        const color = ctx.piece.getColor();
+        const forward = (color === 'white') ? -1 : 1; // assuming y=0 is top
+
+        const moves = [];
+        const w = ctx.board.getWidth();
+        const h = ctx.board.getHeight();
+        const x = ctx.from.x;
+        const y = ctx.from.y;
+
+        // Forward move
+        if (y + forward >= 0 && y + forward < h) {
+            const forwardCell = ctx.board.getCell(x, y + forward);
+            if (forwardCell?.piece == null) {
+                moves.push({ x: x, y: y + forward, capture: false });
+
+                // Double step from starting position
+                const startingRow = (color === 'white') ? h - 2 : 1;
+                if (!ctx.piece.hasMoved) {
+                    const doubleForwardCell = ctx.board.getCell(x, y + 2 * forward);
+                    if (doubleForwardCell?.piece == null) {
+                        moves.push({ x: x, y: y + 2 * forward, capture: false });
+                    }
+                }
+                
+            }
+        }
+
+        // Captures
+        for (const dx of [-1, 1]) {
+            if (x + dx >= 0 && x + dx < w && y + forward >= 0 && y + forward < h) {
+                const diagCell = ctx.board.getCell(x + dx, y + forward);
+                const target = diagCell?.piece ?? null;
+                if (target != null && target.getColor() !== color) {
+                    moves.push({ x: x + dx, y: y + forward, capture: true });
+                }
+            }
+        }
+
+        return moves;
+    }
+}
+
+export { RookMove, BishopMove, KnightMove, QueenMove, KingMove, PawnMove };

engine/core/piece.js

@@ -22,6 +22,8 @@ class Piece {
         this.color = color;
         /** @type {PieceType} */
         this.type = type;
+        /** @type {boolean} */
+        this.hasMoved = false;
     }
 
     /**