public class Ball extends Actor
{
    //Instance Constants

    //Instance Variables    
    int size;
    Color ballColor;
    private boolean debug=false;
    private boolean readyToStart=false;

    /**
     * Constructor for objects of class Ball.
     * If no input parameters are specified it defaults to ball size of 20
     */
    public Ball() 
    {
        this(20);
    }// End Constructor

    /***
     * Constructor for objects of class Ball.
     * 
     * @param sizeIn The size of the ball to create
     */
    public Ball(int sizeIn) 
    {
        this.size = sizeIn;
        ballColor = Color.CYAN;
        updateImage();
        readyToStart = false;
    }//End Constructor

    /**
     * Returns the size of the ball
     * 
     * @return size the size of the ball
     */
    public int getSize() {
        return this.size;
    }

    /**
     * Checks to see if the ball is touching a ball bigger than it. If it is
     * touching another ball it repositions itself.
     * 
     * @return true if ready, false if reposition was required
     */
    public boolean getReady() {
        readyToStart = false;
        
        //Check to see if ball is touching something bigger and save result
        if (this.isTouchingBigger() != null) { 
            this.moveAway(this.isTouchingBigger());
            return false;
        }


        return true;
    }

    /**
     * Update the image to be displayed on the screen for the Ball object
     * 
     */
    void updateImage()
    {
        //Create an image of the set size using built in greenfoot commands
        GreenfootImage displayImage;
        displayImage = new GreenfootImage(size,size);

        //Draw Circle
        displayImage.setColor(ballColor); //Set color to ballColor
        displayImage.drawOval(0, 0, this.getSize(), this.getSize()); //Draw a circle

        //Display the number inside circle
        Font displayFont = new Font( (int)(size*0.75) );
        displayImage.setColor(ballColor.BLACK); //Set color to Black
        displayImage.setFont(displayFont);
        displayImage.drawString(Integer.toString(size),(int)(size*0.1),(int)(size*0.8));
        //Add the image as the new image for this object
        setImage(displayImage);

    }

    /**
     * Check to see if the Ball is touching another ball that is bigger than it
     * 
     * @return null if not touching, or the object reference of the biggest ball it is touching
     */
    Ball isTouchingBigger() 
    {
        //Get list of all Objects that are intersecting this one
        List<Ball> touchingBalls = getIntersectingObjects(Ball.class);
        //Create a variable to store the biggest ball intersecting
        Ball biggestBall = null;
        Ball tempBall = null;
        
        if (debug) System.out.println(touchingBalls);
       
        //Check to see if list is empty (ie, no intersections)
        if (!touchingBalls.isEmpty()) {
            

            for(int i = 0; i < touchingBalls.size(); i++) {
                  if(touchingBalls.get(i).getSize() > this.getSize()) {             
                       tempBall = (Ball)touchingBalls.get(i);
                  }
            }
        }  
            //Iterate through the list and find the biggest ball it is touching.
                //Get a single ball from the list
                 //Note, I have to do a cast conversion here to tell Java to expect a specific object type
                //Check the size of the ball and save if needed
        System.out.println(tempBall);
        if(biggestBall != null) {
             biggestBall = tempBall;
        }
           
        

        //Return the correct value as specfied in javadoc at start of method
        

    
    return biggestBall;
}
    
    
    /**
     * Move away from the specified ball so that they no longer intersect.
     * 
     * @param The ball to be moving away from
     */
    void moveAway(Ball runFromThis) {
        
        //if(this.isTouchingBigger() != null) {
            //this.move(-movement / 2); // Kinda works
            //this.setLocation(this.getX() - 1, this.getY());
            //this.setLocation(runFromThis.getX() + movement, runFromThis.getY() + movement);
        //}
        
        int movement = Greenfoot.getRandomNumber(10);
        
        while(this.getIntersectingObjects(Ball.class).size() > 0) {
         this.turn(movement);
         this.setLocation(runFromThis.getX() + movement, runFromThis.getY() + movement);
        }
        
        
        
        
        
    }