Added player management and related UI components

+ Game Mode selection dialog
+ Game class for turn management
+ Abstract Player class with NaturalPlayer implementation
- Moved mouse input handling from BoardPanel to NaturalPlayer

src/dev/kske/chess/ui/BoardPanel.java

@@ -5,8 +5,6 @@ import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.event.ComponentAdapter;
 import java.awt.event.ComponentEvent;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -15,7 +13,6 @@ import javax.swing.JPanel;
 
 import dev.kske.chess.board.Board;
 import dev.kske.chess.board.Move;
-import dev.kske.chess.board.Position;
 import dev.kske.chess.event.GameEvent;
 import dev.kske.chess.event.GameEventListener;
 
@@ -61,33 +58,6 @@ public class BoardPanel extends JPanel implements GameEventListener {
 		});
 
 		setSize(getPreferredSize());
-
-		// Add a mouse adapter for testing piece movement
-		addMouseListener(new MouseAdapter() {
-
-			private Position pos;
-
-			@Override
-			public void mousePressed(MouseEvent evt) {
-				if (pos == null) {
-					pos = new Position(evt.getPoint().x / tileSize, evt.getPoint().y / tileSize);
-
-					if (board.get(pos) != null) {
-						displayMoves.clear();
-						displayMoves.addAll(board.getMoves(pos));
-						repaint();
-					}
-				} else {
-					Position dest = new Position(evt.getPoint().x / tileSize, evt.getPoint().y / tileSize);
-
-					if (board.attemptMove(new Move(pos, dest))) {
-						displayMoves.clear();
-						repaint();
-					}
-					pos = null;
-				}
-			}
-		});
 	}
 
 	@Override
@@ -133,7 +103,26 @@ public class BoardPanel extends JPanel implements GameEventListener {
 	}
 
 	/**
-	 * Reverts the board to its initial state
+	 * Displays move destinations on the board.
+	 * 
+	 * @param moves The moves to display
+	 */
+	public void displayMoves(List<Move> moves) {
+		displayMoves.clear();
+		displayMoves.addAll(moves);
+		repaint();
+	}
+
+	/**
+	 * Clears all display moves.
+	 */
+	public void clearDisplayMoves() {
+		displayMoves.clear();
+		repaint();
+	}
+
+	/**
+	 * Reverts the board to its initial state.
 	 */
 	public void reset() {
 		board.initializeDefaultPositions();
@@ -149,6 +138,8 @@ public class BoardPanel extends JPanel implements GameEventListener {
 	@Override
 	public Dimension getPreferredSize() { return new Dimension(480, 480); }
 
+	public int getTileSize() { return tileSize; }
+
 	public Board getBoard() { return board; }
 
 	public void setBoard(Board board) {

src/dev/kske/chess/ui/GameModeDialog.java

@@ -0,0 +1,49 @@
+package dev.kske.chess.ui;
+
+import java.awt.FlowLayout;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+
+import dev.kske.chess.board.Piece.Color;
+import dev.kske.chess.game.Game;
+import dev.kske.chess.game.NaturalPlayer;
+import dev.kske.chess.game.Player;
+
+/**
+ * Project: <strong>Chess</strong><br>
+ * File: <strong>GameModeDialog.java</strong><br>
+ * Created: <strong>06.07.2019</strong><br>
+ * Author: <strong>Kai S. K. Engelbart</strong>
+ */
+public class GameModeDialog extends JDialog {
+
+	private static final long serialVersionUID = 5470026233924735607L;
+
+	/**
+	 * Create the dialog.
+	 */
+	public GameModeDialog(BoardPanel boardPanel) {
+		super();
+		setModal(true);
+		setTitle("Game Mode Selection");
+		setBounds(100, 100, 231, 99);
+		setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+		getContentPane().setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
+
+		JButton btnNatural = new JButton("Game against natural opponent");
+		btnNatural.addActionListener((evt) -> {
+			Map<Color, Player> players = new HashMap<>();
+			players.put(Color.WHITE, new NaturalPlayer(boardPanel.getBoard(), Color.WHITE, boardPanel));
+			players.put(Color.BLACK, new NaturalPlayer(boardPanel.getBoard(), Color.BLACK, boardPanel));
+			new Game(players, boardPanel.getBoard()).start();
+			dispose();
+		});
+		getContentPane().add(btnNatural);
+
+		JButton btnAI = new JButton("Game against AI");
+		getContentPane().add(btnAI);
+	}
+}

src/dev/kske/chess/ui/MainWindow.java

@@ -64,5 +64,8 @@ public class MainWindow {
 		btnRestart.addActionListener((evt) -> boardPanel.reset());
 		toolPanel.add(btnRestart);
 		mframe.pack();
+
+		// Display dialog for game mode selection
+		new GameModeDialog(boardPanel).setVisible(true);
 	}
 }