From bdf56dc2503fc6f9c96b9466e85c15686f852494 Mon Sep 17 00:00:00 2001
From: "g.vancompernolle" <g.vancompernolle@ecam.fr>
Date: Wed, 7 May 2025 15:15:10 +0200
Subject: [PATCH] auto player ia

---
 src/backend/AutoPlayer.java | 48 +++++++++++++++++++++++++++----------
 src/backend/Board.java      | 34 +++++++++++++++++++++++++-
 src/backend/Game.java       |  7 +++---
 3 files changed, 72 insertions(+), 17 deletions(-)

diff --git a/src/backend/AutoPlayer.java b/src/backend/AutoPlayer.java
index a48c0c2..e47e848 100644
--- a/src/backend/AutoPlayer.java
+++ b/src/backend/AutoPlayer.java
@@ -1,17 +1,39 @@
 package backend;
 
+import java.util.ArrayList;
+import java.util.Random;
+
 public class AutoPlayer {
-	
-	
-	/**
-	 * returns the best Move to try on provided board for active player
-	 * @param board
-	 * @return
-	 */
-	public Move computeBestMove(Board board) {
-		
-		return null;
-	}
-	
-	
+    private Random rand = new Random();
+
+    public Move computeBestMove(Board board) {
+        ArrayList<Move> possibleMoves = new ArrayList<>();
+        boolean whiteTurn = board.isTurnWhite();
+
+        for (Piece p : board.getPieces()) {
+            if (p.isWhite() == whiteTurn) {
+                ArrayList<int[]> moves = Move.getPossibleMoves(board, p);
+                for (int[] pos : moves) {
+                    int toX = pos[0];
+                    int toY = pos[1];
+                    Piece captured = board.getPieceAt(toX, toY);
+                    Move move = new Move(p, p.getX(), p.getY(), toX, toY, captured);
+                    possibleMoves.add(move);
+                }
+            }
+        }
+
+        // Si aucune possibilité => null
+        if (possibleMoves.isEmpty()) return null;
+
+        // Cherche un coup qui capture une pièce
+        for (Move m : possibleMoves) {
+            if (m.getCapturedPiece() != null) {
+                return m;
+            }
+        }
+
+        // Sinon, retourne un coup aléatoire
+        return possibleMoves.get(rand.nextInt(possibleMoves.size()));
+    }
 }
diff --git a/src/backend/Board.java b/src/backend/Board.java
index b9f3e07..d357a0b 100644
--- a/src/backend/Board.java
+++ b/src/backend/Board.java
@@ -255,9 +255,41 @@ public class Board {
 	}
 	
 	public void playMove(Move move) {
-		//TODO
+	    if (move == null) return;
 
+	    Piece pieceToMove = getPieceAt(move.getFromX(), move.getFromY());
+	    if (pieceToMove == null) return;
+
+	    // Supprimer la pièce d'origine
+	    pieces.remove(pieceToMove);
+
+	    // Supprimer la pièce capturée (si elle existe)
+	    Piece captured = getPieceAt(move.getToX(), move.getToY());
+	    if (captured != null) {
+	        pieces.remove(captured);
+	    }
+
+	    // Ajouter la nouvelle position
+	    Piece newPiece = new Piece(
+	        pieceToMove.getType(),
+	        pieceToMove.isWhite(),
+	        move.getToX(),
+	        move.getToY()
+	    );
+	    pieces.add(newPiece);
+
+	    // Enregistrer dans l'historique pour undo
+	    moveHistory.add(move);
+
+	    // Fin de tour
+	    turnNumber++;
+
+	    // Désélection et surlignage off
+	    selectedX = -1;
+	    selectedY = -1;
+	    highlightedSquares.clear();
 	}
+
 	
 	public Piece getPieceAt(int x, int y) {
 	    for (Piece p : pieces) {
diff --git a/src/backend/Game.java b/src/backend/Game.java
index a2b79c9..89ce393 100644
--- a/src/backend/Game.java
+++ b/src/backend/Game.java
@@ -48,9 +48,10 @@ public class Game extends Thread {
 	}
 
 	private void aiPlayerTurn() {
-		if(isAITurn()) {
-			board.playMove(aiPlayer.computeBestMove(new Board(board)));
-		}
+	    if(isAITurn()) {
+	        Move m = aiPlayer.computeBestMove(board);
+	        board.playMove(m);
+	    }
 	}
 
 	public void clickCoords(int x, int y) {