No simultaneous movement, problem with streams?

I try to write a game of Air Hockey, I think the essence of the game is clear. I have three classes, this is the main window, the playing field and the statistical field. The movement of the puck begins after pressing the button from the Statistical field, is carried out by redrawing in the timer handler.

Question one: Before pressing this button, players can move (in the main class), but not simultaneously. I understand the problem in the streams (

Question two: After pressing the button, the puck begins its movement and the players no longer move. Here, as I understand it, the problem is also in the streams (I can’t understand how to do it right. Like everything here, I'm just learning, don't strictly judge the code.

Main class:

package com.company; import javax.swing.*; import java.awt.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import static java.awt.event.KeyEvent.*; public class MainWindow { public MainWindow() { Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); // Инициализация фрейма JFrame jFrame = new JFrame(); jFrame.setLocation(screenSize.width / 2 - (StatisticField.STATISTIC_FIELD_W + GameField.GAME_FIELD_W) / 2, screenSize.height / 2 - StatisticField.STATISTIC_FIELD_H / 2); jFrame.setTitle("Air Hockey"); jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); jFrame.setVisible(true); jFrame.setLayout(new FlowLayout()); jFrame.setResizable(false); jFrame.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { super.keyPressed(e); if (e.getKeyCode() == VK_UP) { GameField.setPlayer2Y(GameField.getPlayer2Y() - 5); jFrame.repaint(5); } if (e.getKeyCode() == VK_DOWN) { GameField.setPlayer2Y(GameField.getPlayer2Y() + 5); jFrame.repaint(5); } if (e.getKeyCode() == VK_W) { GameField.setPlayer1Y(GameField.getPlayer1Y() - 5); jFrame.repaint(5); } if (e.getKeyCode() == VK_S) { GameField.setPlayer1Y(GameField.getPlayer1Y() + 5); jFrame.repaint(5); } } }); // Создание игрового и статистического поля StatisticField statisticField = new StatisticField(); GameField gameField = new GameField(); statisticField.setPreferredSize(new Dimension(StatisticField.STATISTIC_FIELD_W, StatisticField.STATISTIC_FIELD_H)); gameField.setPreferredSize(new Dimension(GameField.GAME_FIELD_W, GameField.GAME_FIELD_H)); jFrame.add(gameField); jFrame.add(statisticField); jFrame.pack(); } public static void main(String[] args) { MainWindow mainWindow = new MainWindow(); } } 

Playground class:

 package com.company; import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.geom.Ellipse2D; import java.awt.geom.Rectangle2D; public class GameField extends JPanel implements ActionListener { public static final int WIN_POINTS = 7; // Очков для победы public static int GAME_FIELD_H = 400; // Высота игрового поля public final static int GAME_FIELD_W = 700; // Ширина игрового поля private final static int PUCK_SIZE = 20; // Размер шайбы private final static int PLAYER_HEIGHT = 100; // Высота игроков private final static int PLAYER_WIDTH = 15; // Ширина игроков private int puckX; // Х-координата шайбы private int puckY; // У-координата шайбы private static int player1X; // Х-координата 1-го игрока private static int player1Y; // У-координата 1-го игрока private static int player2X; // Х-координата 2-го игрока private static int player2Y; // У-координата 2-го игрока private static int player1Points; // Очки 1-го игрока private static int player2Points; // Очки 2-го игрока private Timer timerPuck; // Время перерисовки private boolean puckUp; // Направление движения шайбы private boolean puckDown; private boolean puckLeft; private boolean puckRight; private static boolean player1Up = false; // Направление движения игроков private static boolean player1Down = false; private static boolean player2Up = false; private static boolean player2Down = false; private static boolean inGame = false; private int route; // Начальное направление движения шайбы public static int getPlayer1Y() { return player1Y; } public static void setPlayer1Y(int player1Y) { GameField.player1Y = player1Y; } public static int getPlayer2Y() { return player2Y; } public static void setPlayer2Y(int player2Y) { GameField.player2Y = player2Y; } public static boolean isInGame() { return inGame; } public static void setInGame(boolean inGame) { GameField.inGame = inGame; } // Отрисовка шайбы и игроков @Override protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D) g; Rectangle2D player1 = new Rectangle2D.Double(player1X, player1Y, PLAYER_WIDTH, PLAYER_HEIGHT); Rectangle2D player2 = new Rectangle2D.Double(player2X, player2Y, PLAYER_WIDTH, PLAYER_HEIGHT); Ellipse2D puck = new Ellipse2D.Double(puckX, puckY, PUCK_SIZE, PUCK_SIZE); g2.setColor(Color.RED); g2.fill(puck); g2.setColor(Color.BLACK); g2.fill(player1); g2.fill(player2); } // Движение шайбы public void movePuck() { if(puckUp) puckY -= 1; if(puckDown) puckY += 1; if(puckLeft) puckX -= 1; if(puckRight) puckX += 1; } // Выбор начального направления движения шайбы public void choiceOfDirection(){ route = (int)(Math.random() * 3); if (route == 0) { puckRight = true; puckUp = true; puckLeft = false; puckDown = false; } if (route == 1) { puckRight = false; puckUp = true; puckLeft = true; puckDown = false; } if (route == 2) { puckRight = false; puckUp = false; puckLeft = true; puckDown = true; } if (route == 3) { puckRight = true; puckUp = false; puckLeft = false; puckDown = true; } } // Инициализация игры public void initGame(){ player1Points = 0; player2Points = 0; choiceOfDirection(); // Начальные координаты шайбы и игроков puckX = GAME_FIELD_W/2 - PUCK_SIZE/2; puckY = GAME_FIELD_H/2 - PUCK_SIZE/2; player1X = 0; player1Y = GAME_FIELD_H/2 - PLAYER_HEIGHT/2; player2X = GAME_FIELD_W - PLAYER_WIDTH; player2Y = GAME_FIELD_H/2 - PLAYER_HEIGHT/2; timerPuck = new Timer(1, this); timerPuck.start(); } public GameField() { // Установка рамки setBorder(BorderFactory.createCompoundBorder( BorderFactory.createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder())); // Инициализация игры в конструкторе initGame(); setFocusable(true); } public void playerWin(Label player){ JOptionPane.showMessageDialog( this, player.getText() + " WIN!!!", "Congratulations", JOptionPane.PLAIN_MESSAGE); StatisticField.getStart().setLabel("Start Game"); initGame(); StatisticField.getPoint1().setText("0"); StatisticField.getPoint2().setText("0"); } // Проверка на столкновение шайбы с бортами и на гол public void checkBorder(){ if(puckY == 0){ puckDown = true; puckUp = false; } if(puckY == GAME_FIELD_H - PUCK_SIZE){ puckDown = false; puckUp = true; } if(puckX == PLAYER_WIDTH && puckY + PUCK_SIZE/2 >= player1Y && puckY + PUCK_SIZE/2 <= player1Y + PLAYER_HEIGHT){ puckRight = true; puckLeft = false; } if(puckX == -PUCK_SIZE){ player2Points++; inGame = false; choiceOfDirection(); puckX = GAME_FIELD_W/2 - PUCK_SIZE/2; puckY = GAME_FIELD_H/2 - PUCK_SIZE/2; StatisticField.getPoint2().setText("" + player2Points); if(player2Points == WIN_POINTS){ playerWin(StatisticField.getPlayer2Name()); } } if(puckX == GAME_FIELD_W - PUCK_SIZE - PLAYER_WIDTH && puckY + PUCK_SIZE/2 >= player2Y && puckY + PUCK_SIZE/2 <= player2Y + PLAYER_HEIGHT){ puckLeft = true; puckRight = false; } if(puckX == GAME_FIELD_W + PUCK_SIZE){ player1Points++; inGame = false; choiceOfDirection(); puckX = GAME_FIELD_W/2 - PUCK_SIZE/2; puckY = GAME_FIELD_H/2 - PUCK_SIZE/2; StatisticField.getPoint1().setText("" + player1Points); if(player1Points == WIN_POINTS){ playerWin(StatisticField.getPlayer1Name()); } } } // Событие таймера @Override public void actionPerformed(ActionEvent e) { if(inGame) { movePuck(); checkBorder(); repaint(); } } } 

Class statistical field:

 package com.company; import javax.swing.*; import javax.swing.border.Border; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class StatisticField extends JPanel { public final static int STATISTIC_FIELD_H = 400; // Высота статистического поля public final static int STATISTIC_FIELD_W = 200; // Ширина статистического поля // Компоненты private static Label player1Name = new Label("Player 1", Label.CENTER); private static Label player2Name = new Label("Player 2", Label.CENTER); private TextField player1NameTextField = new TextField(); private TextField player2NameTextField = new TextField(); private static Label point1 = new Label("0", Label.CENTER); private static Label point2 = new Label("0", Label.CENTER); private static Button start = new Button("Start Game"); public static Label getPoint1() { return point1; } public static Label getPoint2() { return point2; } public static Label getPlayer1Name() { return player1Name; } public static Label getPlayer2Name() { return player2Name; } public static Button getStart() { return start; } public StatisticField(){ // Шрифт счета Font font = new Font("TimesRoman", Font.BOLD, 100); // Компоненты JPanel settingPanel = new JPanel(); JPanel setting1player = new JPanel(); JPanel setting2player = new JPanel(); JPanel points = new JPanel(); Label colon = new Label(":", Label.CENTER); Border border = BorderFactory.createCompoundBorder( BorderFactory.createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder()); Label setting1Up = new Label("\"W\" - UP", Label.CENTER); Label setting2Up = new Label("\"UP\" - UP", Label.CENTER); Label setting1Down = new Label("\"S\" - DOWN", Label.CENTER); Label setting2Down = new Label("\"DOWN\" - DOWN", Label.CENTER); Button renamePlayer1 = new Button("Rename"); Button renamePlayer2 = new Button("Rename"); // Установка менеджеров компановки setLayout(new GridLayout(3, 1)); setting1player.setLayout(new GridLayout(5, 1)); setting2player.setLayout(new GridLayout(5, 1)); settingPanel.setLayout(new GridLayout(1, 2)); points.setLayout(new GridLayout(1, 3)); // Установка рамок settingPanel.setBorder(border); points.setBorder(border); // Установка шрифта point1.setFont(font); point2.setFont(font); colon.setFont(font); // Добавление на панель points points.add(point1); points.add(colon); points.add(point2); // Добавление на панель setting1player setting1player.add(player1Name); setting1player.add(setting1Up); setting1player.add(setting1Down); setting1player.add(player1NameTextField); setting1player.add(renamePlayer1); // Добавление на панель setting2player setting2player.add(player2Name); setting2player.add(setting2Up); setting2player.add(setting2Down); setting2player.add(player2NameTextField); setting2player.add(renamePlayer2); // Добавление на панель settingPanel settingPanel.add(setting1player); settingPanel.add(setting2player); // Добавление на статистическое поле add(points); add(settingPanel); add(start); // Обработчик кнопки start start.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { start.setLabel("Continue Game"); GameField.setInGame(true); } }); // Обработчик кнопки renamePlayer1 renamePlayer1.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if(!player1NameTextField.getText().equals("")) { player1Name.setText(player1NameTextField.getText()); player1NameTextField.setText(""); } } }); // Обработчик кнопки renamePlayer2 renamePlayer2.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if(!player2NameTextField.getText().equals("")) { player2Name.setText(player2NameTextField.getText()); player2NameTextField.setText(""); } } }); } }