package mug12;

/**
 * The world for Multi-User Grinnell.  Although it violates
 * some standards of object-oriented design, we use the world
 * as a central repository for all our objects.
 *
 * @author CSC152 2004F
 */
public interface WorldInterface
{
	/**
	 * Add Person to world
	 */
	public void addPerson(Person bob)
		throws NameTakenException;
	 
	/**
	 * Remove Person from world
	 */
	public void removePerson(Person bob);
	/**
	 * Add Person to world
	 */
	public void addThing(Thing jim)
		throws NameTakenException;
	 
	/**
	 * Remove Person from world
	 */
	public void removeThing(Thing jim);
	
	/**
	 * Determine what time it is in the world.
	 *
	public Time time();
	
	/**
	 * Indicate that some time has passed.
	 *
	void elapse();
	*/
	
	/**
	* Sends a String to all persons in a room
	*/
	public void broadcast(String message, String[] sendTo);
	
	/**
	* Find all the people in a room
	*/
	public String[] listPeople(String room);
	
	/**
	* find all the things in a room
	*/
	public String[] listContents(String room);
	
	/**
	* Maps names to objects
	*/
	public Object map(String name)
		throws NotHere;
	
	public Verb mapVerb(String verb)
		throws InvalidVerb;
	
	/**
	 * Record that an interaction has happened.  Return a comment on the
	 * results of the action.
	 *
	 * @exception
	 *   If the action is invalid or the object is invalid or ...
	 */
	
	public void perform(Action tim)
		throws InvalidVerb, InvalidTarget;

} // interface World