PIbd-21_Markov_D.P._ContainerShip_Hard/DrawingShip.java

import javax.swing.*;
import java.awt.*;
import java.util.Random;
public class DrawingShip extends JPanel {
    private EntityShip Ship;
    public DrawingDeck Deck;
    private float _startPosX;
    private float _startPosY;
    private Integer _pictureWidth = null;
    private Integer _pictureHeight = null;
    protected final int _shipWidth = 120;
    protected final int _shipHeight = 40;
    public void SetEnum() {
        Random r = new Random();
        int numbDecks = r.nextInt(1, 4);
        Deck.SetAddEnum(numbDecks);
    }
    public EntityShip GetShip() {
        return Ship;
    }

    public void Init(int speed, float weight, Color bodycolor) {
        Ship = new EntityShip();
        Ship.Init(speed, weight, bodycolor);
        Deck = new DrawingDeck();
        SetEnum();
    }
    public void SetPosition(int x, int y, int width, int height) {
        if (x < 0 || y < 0)
        {
            return;
        }

        if (x + _shipWidth > width || y + _shipHeight > height)
        {
            return;
        }

        _startPosX = x;
        _startPosY = y;

        _pictureWidth = width;
        _pictureHeight = height;
    }
    public void MoveTransport(Direction direction) {
        if (_pictureWidth == null || _pictureHeight == null)
        {
            return;
        }
        switch (direction)
        {
            case Right:
                if (_startPosX + _shipWidth + Ship.GetStep() < _pictureWidth)
                {
                    _startPosX += Ship.GetStep();
                }
                break;
            case Left:
                if (_startPosX - Ship.GetStep() > 0)
                {
                    _startPosX -= Ship.GetStep();
                }
                break;
            case Up:
                if (_startPosY - Ship.GetStep() > 0)
                {
                    _startPosY -= Ship.GetStep();
                }
                break;
            case Down:
                if (_startPosY + _shipHeight + Ship.GetStep() < _pictureHeight)
                {
                    _startPosY += Ship.GetStep();
                }
                break;
        }
    }
    public void DrawTransport() {
        if (_startPosX < 0 || _startPosY < 0 || _pictureWidth == null || _pictureHeight == null) {
            return;
        }
        repaint();
    }
    @Override
    public void paintComponent(Graphics g) {
        if (GetShip() == null) {
            return;
        }
        if (_startPosX < 0 || _startPosY < 0 || _pictureWidth == null || _pictureHeight == null) {
            return;
        }
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setPaint(Ship.GetBodyColor());
        int xValues[]={(int) _startPosX,(int) _startPosX + 100,(int) _startPosX + 80,(int) _startPosX + 20};
        int yValues[]={(int) _startPosY + 30,(int) _startPosY + 30,(int) _startPosY + 60,(int) _startPosY + 60};
        g2d.fillPolygon(xValues,yValues,4);
        g2d.setPaint(Color.BLACK);
        g2d.drawPolygon(xValues,yValues,4);
        Deck.DrawDeck(Ship.GetBodyColor(), g, _startPosX, _startPosY);
    }
    public void ChangeBorders(int width, int height) {
        _pictureWidth = width;
        _pictureHeight = height;
        if (_pictureWidth <= _shipWidth || _pictureHeight <= _shipHeight) {
            _pictureWidth = null;
            _pictureHeight = null;
            return;
        }
        if (_startPosX + _shipWidth > _pictureWidth) {
            _startPosX = _pictureWidth - _shipWidth;
        }
        if (_startPosY + _shipHeight > _pictureHeight) {
            _startPosY = _pictureHeight - _shipHeight;
        }
    }
}