Ca fait le Undo

src/backend/Board.java

@@ -11,6 +11,8 @@ public class Board {
     private int selectedY = -1;
     private ArrayList<Piece> pieces = new ArrayList<>();
     private ArrayList<int[]> highlightedSquares = new ArrayList<>();
+    private ArrayList<Move> moveHistory = new ArrayList<>();
+
 
     
     
@@ -130,17 +132,17 @@ public class Board {
 	                }
 
 	                if (valid) {
-	                    // Capture éventuelle
 	                    Piece destPiece = getPieceAt(x, y);
-	                    if (destPiece != null) {
-	                        pieces.remove(destPiece);
-	                    }
 
-	                    // Déplacement (création d'une nouvelle pièce)
+	                    // Enregistrer le coup dans l'historique
+	                    Move move = new Move(selectedPiece, selectedX, selectedY, x, y, destPiece);
+	                    moveHistory.add(move);
+
+	                    // Appliquer le déplacement
 	                    pieces.remove(selectedPiece);
+	                    if (destPiece != null) pieces.remove(destPiece);
 	                    pieces.add(new Piece(selectedPiece.getType(), selectedPiece.isWhite(), x, y));
 
-	                    // Fin du tour
 	                    turnNumber++;
 	                }
 
@@ -221,8 +223,30 @@ public class Board {
 
 
 	public void undoLastMove() {
-		//TODO
-		
+	    if (moveHistory.isEmpty()) return;
+
+	    Move last = moveHistory.remove(moveHistory.size() - 1);
+
+	    // Supprimer la pièce déplacée
+	    Piece current = getPieceAt(last.getToX(), last.getToY());
+	    if (current != null) {
+	        pieces.remove(current);
+	    }
+
+	    // Restaurer la pièce déplacée
+	    pieces.add(new Piece(
+	        last.getMovedPiece().getType(),
+	        last.getMovedPiece().isWhite(),
+	        last.getFromX(), last.getFromY()
+	    ));
+
+	    // Réinsérer la pièce capturée si besoin
+	    if (last.getCapturedPiece() != null) {
+	        Piece c = last.getCapturedPiece();
+	        pieces.add(new Piece(c.getType(), c.isWhite(), c.getX(), c.getY()));
+	    }
+
+	    turnNumber--;
 	}
 
 	public Board(Board board) {

src/backend/Move.java

@@ -3,6 +3,27 @@ package backend;
 import java.util.ArrayList;
 
 public class Move {
+    private Piece movedPiece;
+    private int fromX, fromY;
+    private int toX, toY;
+    private Piece capturedPiece;
+
+    public Move(Piece movedPiece, int fromX, int fromY, int toX, int toY, Piece capturedPiece) {
+        this.movedPiece = movedPiece;
+        this.fromX = fromX;
+        this.fromY = fromY;
+        this.toX = toX;
+        this.toY = toY;
+        this.capturedPiece = capturedPiece;
+    }
+
+    public Piece getMovedPiece() { return movedPiece; }
+    public int getFromX() { return fromX; }
+    public int getFromY() { return fromY; }
+    public int getToX() { return toX; }
+    public int getToY() { return toY; }
+    public Piece getCapturedPiece() { return capturedPiece; }
+	
 
     public static ArrayList<int[]> getPossibleMoves(Board board, Piece piece) {
         ArrayList<int[]> moves = new ArrayList<>();