/**
     * First 2 collumns: Width and Height of the whole World
     * 3rd & 4th collumns: Width and Height of the Screen, that should be shown
     * 5th collumn: CellSize
     * The Position on the left uppon corner is 0,0
     * Background Moves,too
     */
    public Scrollworld(int Width, int Height,int ScreenWidth,int ScreenHeight,int CellSize)
    {
        this(Width,Height,ScreenWidth,ScreenHeight,0,0,CellSize,true);
    }

    /**
     * First 2 collumns: Width and Height of the whole World
     * 3rd & 4th collumns: Width and Height of the Screen, that should be shown
     * 5th & 6th collumns: The Position on the left uppon corner
     * 7th collumn: CellSize
     * Background Moves,too;
     */
    public Scrollworld(int Width, int Height,int ScreenWidth,int ScreenHeight,int CellSize,boolean BackgroundMove)
    {
        this(Width,Height,ScreenWidth,ScreenHeight,0,0,CellSize,BackgroundMove);
    }

    /**
     * First 2 collumns: Width and Height of the whole World
     * 3rd & 4th collumns: Width and Height of the Screen, that should be shown
     * 5th & 6th collumns: The Position on the left uppon corner
     * 7th collumn: CellSize
     * Background Moves,too;
     */
    public Scrollworld(int Width, int Height,int ScreenWidth,int ScreenHeight,int ScreenLeft,int ScreenUp,int CellSize)
    {
        this(Width,Height,ScreenWidth,ScreenHeight,ScreenLeft,ScreenUp,CellSize,true);
    }

    /**
     * First 2 collumns: Width and Height of the whole World
     * 3rd & 4th collumns: Width and Height of the Screen, that should be shown
     * 5th & 6th collumns: The Position on the left uppon corner
     * 7th collumn: CellSize
     * 8th collumn: should the background move, too
     */
    public Scrollworld(int Width, int Height,int ScreenWidth, int ScreenHeight,int ScreenLeft,int ScreenUp, int CellSize, boolean BackgroundMove)
    {
        super(ScreenWidth, ScreenHeight, CellSize, false);
        if(ScreenWidth>Width)
            ScreenWidth=Width;
        if(ScreenHeight>Height)
            ScreenWidth=Height;
        this.Width=Width;
        this.Height=Height;
        this.BackgroundMove=BackgroundMove;
        this.CellSize=CellSize;
        if(BackgroundMove)
        {
            Background=new GreenfootImage(Width,Height);
            Background.setColor(Color.white);
            Background.fillRect(0,0,Width,Height);
        }
        ShowWorld(ScreenLeft, ScreenUp);
    }