import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * A bit of empty space for bubbles to float in.
 * 
 * @author Michael Kölling
 * @version 1.0
 */
public class Space extends World
{
    private int bubbleSize;
    private int bubbleDirection;
    /**
     * Create Space. Make it black.
     */
    public Space()
    {
        super(900, 600, 1);
        getBackground().setColor(Color.BLACK);
        getBackground().fill();
        prepare();
        setup();
    }

    private void setup()
    {
        int i=0;
        while (i<18)
        {
            Bubble bubble = new Bubble();
            addObject(new Bubble(190-10*i,i*20),getWidth()/2,getHeight()/2);
            i++;
        }

        while (i < 10 )
        {
            Actor bubble = new Bubble();
            addObject(new Bubble(), 900, 600);
            addObject(new Bubble(),getWidth() / 2, getHeight() / 2); 
            i = i + 1;
        }

        
        int x = 300;
        while (x < 11 )
        {    
            addObject( new Bubble(), x, 100);
            x = x * 40;
        }
        
    }

    /**
     * Prepare the world for the start of the program.
     * That is: create the initial objects and add them to the world.
     */
    private void prepare()
    {
        Bubble bubble = new Bubble();
        addObject(bubble,140,152);
        Bubble bubble2 = new Bubble();
        addObject(bubble2,185,243);
        Bubble bubble3 = new Bubble();
        addObject(bubble3,462,359);
        Bubble bubble4 = new Bubble();
        addObject(bubble4,661,209);
        Bubble bubble5 = new Bubble();
        addObject(bubble5,690,370);
        Bubble bubble6 = new Bubble();
        addObject(bubble6,658,514);
        Bubble bubble7 = new Bubble();
        addObject(bubble7,380,216);
        Bubble bubble8 = new Bubble();
        addObject(bubble8,744,90);
        Bubble bubble9 = new Bubble();
        addObject(bubble9,780,367);
        Bubble bubble10 = new Bubble();
        addObject(bubble10,319,489);
        Bubble bubble11 = new Bubble();
        addObject(bubble11,166,343);
        Bubble bubble12 = new Bubble();
        addObject(bubble12,282,334);
        Bubble bubble13 = new Bubble();
        addObject(bubble13,603,212);
        Bubble bubble14 = new Bubble();
        addObject(bubble14,536,76);
        Bubble bubble15 = new Bubble();
        addObject(bubble15,519,376);
        Bubble bubble16 = new Bubble();
        addObject(bubble16,577,504);
        Bubble bubble17 = new Bubble();
        addObject(bubble17,870,542);
        Bubble bubble18 = new Bubble();
        addObject(bubble18,867,239);
        Bubble bubble19 = new Bubble();
        addObject(bubble19,244,113);
        Bubble bubble20 = new Bubble();
        addObject(bubble20,426,512);
        Bubble bubble21 = new Bubble();
        addObject(bubble21,78,501);
    }
}