import java.util.*;
/**
 * Class Room - a room in an adventure game.
 *
 * This class is part of the "World of Zuul" application. 
 * "World of Zuul" is a very simple, text based adventure game.  
 *
 * A "Room" represents one location in the scenery of the game.  It is 
 * connected to other rooms via exits.  The exits are labelled north, 
 * east, south, west.  For each direction, the room stores a reference
 * to the neighboring room, or null if there is no exit in that direction.
 * 
 * @author  Michael Kölling and David J. Barnes
 * @version 2016.02.29
 */
public class Room 
{
    public String description;
    private Map<String,Room> map;
    Thing thing = null;

    /**
     * Create a room described "description". Initially, it has
     * no exits. "description" is something like "a kitchen" or
     * "an open court yard".
     * @param description The room's description.
     */
    
    public Room(String description) 
    {
        this.description = description;
        this.map = new HashMap<>();
    }
    
    public Room(String description, Thing thing){
        this(description);
        this.thing = thing;
    }

    /**
     * Define the exits of this room.  Every direction either leads
     * to another room or is null (no exit there).
     * @param north The north exit.
     * @param east The east east.
     * @param south The south exit.
     * @param west The west exit.
     */
    
    public void setExit(String direction,Room exit){
        this.map.put(direction, exit);
    
    }
    
    public Room goRoom(String direction){
        return this.map.get(direction);
    }

    public void printExits(){
        System.out.println("出口: ");
        for(String key : map.keySet()){
            System.out.print(key + " ");
        }
        System.out.println();
    }
    
    /**
     * @return The description of the room.
     */
    public String getDescription()
    {
        return description;
    }
    
    public String pickss(){
        return this.thing.name;
    }

    public String getThing(){
        
        String a="这里什么都没有";
        if(this.thing==null)
            return a;
        else
        return this.thing.name;
    }
     
    
    
    public void removeThing(){
        this.thing = null;
    }
}