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

/**
 * Labs 3:
 * Created by MAWood on 12/02/2016.
 */
class Dice extends JFrame {

    private final boolean[][][] states;
    private int state = 5;

    private Dice()
    {
        states = new boolean[][][]{
                        {{false,false,false},{false,true, false}, {false,false,false}},
                        {{false,false,true}, {false,false,false}, {true,false,false}},
                        {{false,false,true}, {false,true, false}, {true,false,false}},
                        {{true,false,true}, {false,false,false}, {true,false,true}},
                        {{true,false,true}, {false,true, false}, {true,false,true}},
                        {{true,true,true}, {false,false,false}, {true,true,true}}};

        this.setSize(80, 150);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        JButton b = new JButton("Randomise");
        this.setLayout(new BorderLayout());
        this.add(b, BorderLayout.SOUTH);
        b.addActionListener(
                e -> repaint()
        );
        this.setVisible(true);
    }

    public void paint(Graphics g)
    {
        super.paint(g);
        state = (int)(Math.random() * 6);
        drawDiceFace(g);
    }

    private void drawDiceFace(Graphics g)
    {
        int xOffset = 30;
        int yOffset = 50;
        int dotSpacing = 20;
        int dotDiameter = 10;
        int border = 10;

        g.setColor(new Color(0f,0f,0f));

        g.drawRect(xOffset - border, yOffset - border, border + dotSpacing*3, border + dotSpacing*3);

        for(int x = 0; x < 3; x++)
        {
            for(int y = 0; y < 3; y++)
            {
                if(states[state][x][y])
                    g.fillOval(xOffset + x*dotSpacing, yOffset + y*dotSpacing, dotDiameter, dotDiameter);
            }
        }
    }

    public static void main(String[] args)
    {
        new Dice();
    }
}