package ballWorlds;

/**
 * An Animate is an object that can:
 * <ul>
 * <li>act (in any way it chooses)</li>
 * <li>pause/resume its action</li>
 * <li>die (remove itself from its World, hence no longer be drawn or asked to
 * act).</li>
 * </ul>
 * 
 * @author David Mutchler, Salman Azhar, Curt Clifton and others, January 2005.
 *         Modified September 2008, September 2009.
 */
public interface Animate {

	/**
	 * Does anything this Animate object wishes. The act() method is called
	 * repeatedly by the World to which this Animate object belongs.
	 */
	public void act();

	/**
	 * Toggles this Animate object between its "paused" and "not-paused" states.
	 * During the paused state, the act() method should do nothing.
	 */
	public void pauseOrResume();

	/**
	 * Removes this Animate object from its World. Thus, this Animate object is
	 * no longer asked to act and is no longer drawn.
	 */
	public void die();
}