Direction.java

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+public enum Direction {
+    Up, Down, Left, Right
+}

DrawningLocomotive.java

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+import java.awt.*;
+
+class DrawningLocomotive {
+    public EntityLocomotive Locomotive;
+    public ExtraWheelsDraw extraWheelsDraw;
+    /// Левая координата отрисовки локомотива
+    private float _startPosX;
+    /// Верхняя координата отрисовки локомотива
+    private float _startPosY;
+    /// Ширина окна отрисовки
+    private Integer _pictureWidth = null;
+    /// Высота окна отрисовки
+    private Integer _pictureHeight = null;
+    /// Ширина отрисовки локомотива
+    private final int _locomotiveWidth = 120;
+    /// Высота отрисовки локомотива
+    private final int _locomotiveHeight = 50;
+    /// Инициализация свойств
+    public void Init(int speed, float weight, Color bodyColor, int wheelsNum, EntityLocomotive entity)
+    {
+        Locomotive = entity;
+        extraWheelsDraw = new ExtraWheelsDraw();
+        extraWheelsDraw.Init(wheelsNum, bodyColor);
+        Locomotive.Init(speed, weight, bodyColor);
+    }
+    /// Установка позиции локомотива
+    public void SetPosition(int x, int y, int width, int height)
+    {
+        if (x < 0 || x + _locomotiveWidth >= width)
+        {
+            return;
+        }
+        if (y < 0 || y + _locomotiveHeight >= height)
+        {
+            return;
+        }
+        _startPosX = x;
+        _startPosY = y;
+        _pictureWidth = width;
+        _pictureHeight = height;
+    }
+
+    public void MoveTransport(Direction direction)
+    {
+        if (_pictureWidth == null || _pictureHeight == null)
+        {
+            return;
+        }
+        switch (direction)
+        {
+            // вправо
+            case Right:
+                if (_startPosX + _locomotiveWidth + Locomotive.Step() < _pictureWidth)
+                {
+                    _startPosX += Locomotive.Step();
+                }
+                else _startPosX = _pictureWidth - _locomotiveWidth;
+                break;
+            //влево
+            case Left:
+                if (_startPosX - Locomotive.Step() >= 0)
+                {
+                    _startPosX -= Locomotive.Step();
+                }
+                else _startPosX = 0;
+                break;
+            //вверх
+            case Up:
+                if (_startPosY - Locomotive.Step() >= 0)
+                {
+                    _startPosY -= Locomotive.Step();
+                }
+                else _startPosY = 0;
+                break;
+            //вниз
+            case Down:
+                if (_startPosY + _locomotiveHeight + Locomotive.Step() < _pictureHeight)
+                {
+                    _startPosY += Locomotive.Step();
+                }
+                else _startPosY = _pictureHeight - _locomotiveHeight;
+                break;
+        }
+    }
+
+    public void DrawTransport(Graphics2D g) {
+        if (_startPosX < 0 || _startPosY < 0
+                || _pictureHeight == null || _pictureWidth == null)
+        {
+            return;
+        }
+        //тело
+        g.setColor(Color.BLACK);
+        g.drawRect((int)_startPosX , (int)_startPosY, _locomotiveWidth - 20, _locomotiveHeight - 10);
+        //окна
+        g.setColor(Locomotive.getBodyColor());
+        g.fillRect((int)_startPosX + 10, (int)_startPosY + 10, 10, 10);
+        g.fillRect((int)_startPosX + 30, (int)_startPosY + 10, 10, 10);
+        g.fillRect((int)_startPosX + 80, (int)_startPosY + 10, 10, 10);
+        //дверь
+        g.setColor(Color.BLACK);
+        g.drawRect( (int)_startPosX + 50, (int)_startPosY + 10, 10, 20);
+        //колеса
+        extraWheelsDraw.DrawWheels((int)_startPosX, (int)_startPosY, g);
+        //движок
+        g.setColor(Locomotive.getBodyColor());
+        g.fillRect((int)_startPosX + 100, (int)_startPosY + 10, 10, 30);
+    }
+
+    public void ChangeBorders(int width, int height)
+    {
+        _pictureWidth = width;
+        _pictureHeight = height - 75;
+        if (_pictureWidth <= _locomotiveWidth || _pictureHeight <= _locomotiveHeight)
+        {
+            _pictureWidth = null;
+            _pictureHeight = null;
+            return;
+        }
+        if (_startPosX + _locomotiveWidth > _pictureWidth)
+        {
+            _startPosX = _pictureWidth - _locomotiveWidth;
+        }
+        if (_startPosY + _locomotiveHeight > _pictureHeight)
+        {
+            _startPosY = _pictureHeight - _locomotiveHeight;
+        }
+    }
+}

EntityLocomotive.java

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+import java.awt.*;
+import java.util.Random;
+
+public class EntityLocomotive {
+    private int Speed;
+    public int getSpeed() {
+        return Speed;
+    }
+    private float Weight;
+    public float getWeight() {
+        return Weight;
+    }
+    private Color BodyColor;
+    public Color getBodyColor() {
+        return BodyColor;
+    }
+
+    public float Step () {
+        return Speed * 100 / Weight;
+    }
+
+    public void Init(int speed, float weight, Color bodyColor)
+    {
+        Random rnd = new Random();
+        if (speed <= 0) {
+            Speed = 50 + rnd.nextInt(100);
+        }
+        else {
+            Speed = speed;
+        }
+
+        if (weight <= 0) {
+            Weight = 40 + rnd.nextInt(30);
+        }
+        else {
+            Weight = weight;
+        }
+        BodyColor = bodyColor;
+    }
+}

ExtraWheelsDraw.java

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+import java.awt.*;
+
+public class ExtraWheelsDraw {
+    private WheelsCount wheelsCount = WheelsCount.Two;
+    public void setWheelsNum(int num) {
+        switch (num) {
+            case 0: {
+                wheelsCount = WheelsCount.Three;
+                break;
+            }
+            case 1: {
+                wheelsCount = WheelsCount.Four;
+                break;
+            }
+            default:
+                break;
+        }
+    }
+    private Color color;
+
+    public void Init(int num, Color color) {
+        setWheelsNum(num);
+        this.color = color;
+    }
+
+    public void DrawWheels(int startPosX, int startPosY, Graphics2D g) {
+        g.setColor(color);
+        g.drawOval(startPosX, startPosY + 40, 10, 10);
+        g.drawOval(startPosX + 90, startPosY + 40, 10, 10);
+        switch (wheelsCount) {
+            case Four: {
+                g.drawOval(startPosX + 70, startPosY + 40, 10, 10);
+            }
+            case Three: {
+                g.drawOval(startPosX + 20, startPosY + 40, 10, 10);
+                break;
+            }
+            default:
+                break;
+        }
+    }
+
+}

FormLocomotive.java

@@ -0,0 +1,101 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.util.Random;
+
+public class FormLocomotive extends JComponent{
+    private DrawningLocomotive _locomotive;
+    private EntityLocomotive _entity;
+    public FormLocomotive() {
+        JFrame formFrame = new JFrame("Locomotive");
+        formFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        formFrame.setSize(800, 500);
+        formFrame.setVisible(true);
+        formFrame.setLocationRelativeTo(null);
+
+        formFrame.addComponentListener(new ComponentListener() {
+            @Override
+            public void componentResized(ComponentEvent e) {
+                if (_locomotive != null) _locomotive.ChangeBorders(formFrame.getWidth(), formFrame.getHeight());
+                repaint();
+            }
+            @Override
+            public void componentMoved(ComponentEvent e) {}
+            @Override
+            public void componentShown(ComponentEvent e) {}
+            @Override
+            public void componentHidden(ComponentEvent e) {}
+        });
+
+        Panel statusPanel = new Panel();
+        statusPanel.setBackground(Color.WHITE);
+        statusPanel.setLayout(new FlowLayout());
+        setLayout(new BorderLayout());
+        add(statusPanel, BorderLayout.SOUTH);
+
+        Label speedLabel = new Label("Speed:         ");
+        Label weightLabel = new Label("Weight:       ");
+        Label colorLabel = new Label("Color:                    ");
+
+        JButton createButton = new JButton("Create");
+        createButton.addActionListener(e -> {
+            Random rnd = new Random();
+            _locomotive = new DrawningLocomotive();
+            _entity = new EntityLocomotive();
+            _locomotive.Init(100 + rnd.nextInt(200), 1000 + rnd.nextInt(1000), Color.getHSBColor(rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256)), rnd.nextInt(3), _entity);
+            _locomotive.SetPosition(10 + rnd.nextInt(90), 10 + rnd.nextInt(90), formFrame.getWidth(), formFrame.getHeight() - 75);
+            speedLabel.setText("Speed: " + _locomotive.Locomotive.getSpeed());
+            weightLabel.setText("Weight: " + (int)_locomotive.Locomotive.getWeight());
+            colorLabel.setText("Color: " + _locomotive.Locomotive.getBodyColor().getRed() + " " +  _locomotive.Locomotive.getBodyColor().getGreen() + " " + _locomotive.Locomotive.getBodyColor().getBlue() );
+            repaint();
+        });
+
+        statusPanel.add(createButton);
+        statusPanel.add(speedLabel);
+        statusPanel.add(weightLabel);
+        statusPanel.add(colorLabel);
+
+        JButton moveDownButton = new JButton("Down");
+        moveDownButton.addActionListener(e -> {
+            if (_locomotive != null) _locomotive.MoveTransport(Direction.Down);
+            repaint();
+        });
+
+        JButton moveUpButton = new JButton("Up");
+        moveUpButton.addActionListener(e -> {
+            if (_locomotive != null) _locomotive.MoveTransport(Direction.Up);
+            repaint();
+        });
+
+        JButton moveLeftButton = new JButton("Left");
+        moveLeftButton.addActionListener(e -> {
+            if (_locomotive != null) _locomotive.MoveTransport(Direction.Left);
+            repaint();
+        });
+
+        JButton moveRightButton = new JButton("Right");
+        moveRightButton.addActionListener(e -> {
+            if (_locomotive != null) _locomotive.MoveTransport(Direction.Right);
+            repaint();
+        });
+
+        statusPanel.add(moveUpButton);
+        statusPanel.add(moveDownButton);
+        statusPanel.add(moveLeftButton);
+        statusPanel.add(moveRightButton);
+
+        formFrame.getContentPane().add(this);
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        Graphics2D g2 = (Graphics2D)g;
+        if (_locomotive != null) _locomotive.DrawTransport(g2);
+        super.repaint();
+    }
+
+    public static void main(String[] args) {
+        FormLocomotive formLocomotive = new FormLocomotive();
+    }
+}

WheelsCount.java

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+public enum WheelsCount {
+    Two, Three, Four
+}