Map.java

import java.awt.*;
import javax.swing.JPanel;

public class Map extends JPanel {

    //Width & Height of map
    private int width, height;

    //Constructor
    public Map(int w, int h) {
        this.width = w;
        this.height = h;
    }

    //Scales coordinates to width/height of map
    private void scaleCoordinates() {
        for (int i = 0; i < Constants.COUNTRY_COORD.length; i++) {
            Constants.COUNTRY_COORD[i][0] = ((Constants.COUNTRY_COORD[i][0] / 1000) * width);
            Constants.COUNTRY_COORD[i][1] = ((Constants.COUNTRY_COORD[i][1] / 600) * height);
        }
    }

    public void paint(Graphics g) {

        scaleCoordinates();

        //Draws lines between adjacent countires
        for (int x = 0; x < Constants.COUNTRY_COORD.length; x++) {
            for (int y = 0; y < Constants.ADJACENT[x].length; y++) {
                Graphics2D lineDrawer = (Graphics2D) g;
                lineDrawer.setColor(Color.BLACK);

                //Draws one line through edges of map instead of through the middle
                if ((x == 8 && y == 2) || (x == 22 && y == 0)){
                    lineDrawer.drawLine((int) Constants.COUNTRY_COORD[22][0] + (Constants.COUNTRY_DIAMETER / 2),
                                        (int) Constants.COUNTRY_COORD[22][1] + (Constants.COUNTRY_DIAMETER / 2),
                                              width,
                                        (int) Constants.COUNTRY_COORD[22][1] + (Constants.COUNTRY_DIAMETER / 2) - 2);

                    lineDrawer.drawLine((int) Constants.COUNTRY_COORD[8][0] + (Constants.COUNTRY_DIAMETER / 2),
                                        (int) Constants.COUNTRY_COORD[8][1] + (Constants.COUNTRY_DIAMETER / 2),
                                              0,
                                        (int) Constants.COUNTRY_COORD[8][1] + (Constants.COUNTRY_DIAMETER / 2) + 2);
                    continue;
                }

                //Draws all the other lines
                lineDrawer.drawLine((int) Constants.COUNTRY_COORD[x][0] + (Constants.COUNTRY_DIAMETER / 2),
                                    (int) Constants.COUNTRY_COORD[x][1] + (Constants.COUNTRY_DIAMETER / 2),
                                    (int) Constants.COUNTRY_COORD[(Constants.ADJACENT[x][y])][0] + (Constants.COUNTRY_DIAMETER / 2),
                                    (int) Constants.COUNTRY_COORD[(Constants.ADJACENT[x][y])][1] + (Constants.COUNTRY_DIAMETER / 2));
            }
        }

        //Draws circles for each country
        for (int i = 0; i < Constants.COUNTRY_COORD.length; i++) {
            Graphics2D countryDrawer = (Graphics2D) g;

            //Switches color of painter based on continent
            switch (Constants.CONTINENT_IDS[i]) {
                    case 0: countryDrawer.setColor(Color.RED);
                    break;
                    case 1: countryDrawer.setColor(Color.YELLOW);
                    break;
                    case 2: countryDrawer.setColor(Color.GREEN);
                    break;
                    case 3: countryDrawer.setColor(Color.BLUE);
                    break;
                    case 4: countryDrawer.setColor(Color.CYAN);
                    break;
                    case 5: countryDrawer.setColor(Color.MAGENTA);
                    break;
            }

            //Draws each circle
            countryDrawer.fillOval((int) Constants.COUNTRY_COORD[i][0],
                                   (int) Constants.COUNTRY_COORD[i][1],
                                   Constants.COUNTRY_DIAMETER,
                                   Constants.COUNTRY_DIAMETER);
        }

    }

}