// This is not quite a compilable file.
// See notes and comments below.

/** A timer which "ticks" on a regular basis.
 *  The sleepInterval in the starting version causes a tick approximatly
 *      30 times a second.
 *
 *  To use the timer, create an instance of it, and then call its run() method.
 *  This should only be done ONCE.    It's like plugging in a clock.  After you
 *  plug it in, it ticks forever.  
 *
 *  No changes should be needed, except where there comments are below.  
 * "FloaterBox" is the class of your drawing panel (called OuijaPanel in  P3).
 *  
 *
 *  This class doesn't necessarily have to be a .java file of its own.
 */
class FloaterTimer implements Runnable {
    private FloaterBox fBox;   // Change to the type of your drawing panel */
    
    
    /******  As an arugment, pass in the component that needs periodic repainting.
    */
    public FloaterTimer(FloaterBox fBox) {// Change the type
        this.fBox = fBox;
    }
        
    /** The unit is milliseconds. */
    private final int sleepInterval = 33;
    
    public void run() {
        while (!Thread.interrupted()) {
            /***   RIGHT HERE *****
            This is how your drawing code is activated on each tick.
            You probably don't need to change this line.
            */
            this.fBox.repaint();
            
            try {
                Thread.sleep(sleepInterval);
            } catch (Exception e) {
                break; //leave the loop
            }
        }
    }
//end FloaterTimer
}