Thread: Can Anyone Point me in the right direction?

Doing an assignment for my university course based on an applet guessing game, using random shapes and shapes that are golden. Am i right to use a case/switch statement for this? I.E. Different cases for random shape and golden ratio shape?

Originally Posted by ImyMTD

Am i right to use a case/switch statement for this?

What are you doing? From what you said so far, maybe. Post your code or explain more about what you are trying to accomplish by using a switch

My project requires me to create a game which produces random and golden ratio rectangles when the user presses one button, i have attempted to use a swich statement here so when the user clicks the programme will either draw a rectangle or a golden ratio rectange but when the button is clicked it only draws the 1st case is there anyway to get it to alternate between cases? Or should i be using an if else statement

public class firstAttempt extends JApplet
{
    private JButton start[];
    private String controls[] = { "Start"};
    private String guess[] = {  "Golden", "Normal" };
    private JPanel buttonPanel;
    private DrawPanel drawingArea;
    private int width = 500, height = 500;
    private double width_int;
    private double height_int;
    private double ratio;
    private double goldenX;
 
    public void init()
    {
        drawingArea = new DrawPanel ( width, height );
        start = new JButton [controls.length ];
        buttonPanel = new JPanel ();
        buttonPanel.setLayout (new GridLayout ( 1, controls.length ));
        ButtonHandler handler = new ButtonHandler();
 
        for (int i = 0; i < controls.length; i++ )
        {
               start[ i ] = new JButton ( controls [ i ] );
                buttonPanel.add ( start [ i ]);
                start[ i ].addActionListener (handler);
        }
 
        Container c = getContentPane();
        c.add ( buttonPanel, BorderLayout.SOUTH);
        c.add ( drawingArea, BorderLayout.CENTER);
 
 
    }
 
 private class ButtonHandler implements ActionListener
 {
     public void actionPerformed ( ActionEvent e)
     {
         for ( int i =0; i< start.length; i++ )
            if (e.getSource () == start [ i ] )
            {
                drawingArea.setCurrentChoice ( i );
                break;
            }
        }
    }
    class DrawPanel extends JPanel
    {
        private int currentChoice = -1;
        private int width = 100, height=100;
        public DrawPanel ( int w, int h)
        {
            width = ( w>= 0 ? w :100 );
            height = (h>= 0 ? h : 100);
        }
 
        public void paintComponent( Graphics g )
     {
         super.paintComponent( g );
 
         switch( currentChoice ) 
         {
             case 0:
                 g.fillRect( randomX(), randomY(), randomX(), randomY() );
                 break;
             case 1:
                 g.drawRect( goldenX(), randomY(), randomX(), randomY() );
                 break;
 
         }
     }
         public void setCurrentChoice( int c )
     {
         currentChoice = c;
         repaint();
     }
     private int randomX()
     { 
         return (int) ( Math.random() * width ); 
     }
 
     private int randomY()
     { 
         return (int) ( Math.random() * height ); 
 
     }
 
     private int goldenX()
     {
       double ratio = (Math.sqrt(5.0)+1)/2;
       goldenX = height_int*ratio;
       width_int = (int) width;
       height_int = (int) height;
       return (int) ( Math.random()* width );
    }
 
}
}

Trying to get an applet to switch between golden ratio and random shapes using one Jbutton

Originally Posted by ImyMTD

is there anyway to get it to alternate between cases?

Yes, several. You might use a boolean like isGolden to determine if the rectangle is golden or not, and decide how to draw it in the same manner.

Originally Posted by ImyMTD

Or should i be using an if else statement

You could do what you are doing either way