import java.util.Set;
import java.util.HashMap;
import java.util.Iterator;
/**
* 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. For each existing exit, the room
* stores a reference to the neighboring room.
*
* ---------------------------------------------------------------------------
* Renamed setExit to addExit because it just makes more sense.
* ---------------------------------------------------------------------------
*
* @author Michael Kolling and David J. Barnes
* @version 2006.03.30
*
* @author Modified by Charles Cusack, October 2008.
*/
public class Room
{
private String description;
private HashMap<String, Room> exits; // stores exits of this room.
private Item thing;
/**
* 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;
exits = new HashMap<String, Room>();
thing = null;
}
/**
* Define an exit from this room.
* @param direction The direction of the exit.
* @param neighbor The room to which the exit leads.
*/
public void addExit(String direction, Room neighbor)
{
exits.put(direction, neighbor);
}
public void setItem(Item item)
{
thing = item;
}
/**
* @return The short description of the room
* (the one that was defined in the constructor).
*/
public String getShortDescription()
{
return description;
}
/**
* Return a description of the room in the form:
* You are in the kitchen.
* Exits: north west
* @return A long description of this room
*/
public String getLongDescription()
{
StringBuilder result = new StringBuilder();
result.append("You are " + description + ".\n");
if(thing!=null) {
result.append("The room contains "+thing+"\n");
}
result.append(getExitString());
return result.toString();
}
/**
* Return a string describing the room's exits, for example
* "Exits: north west".
* @return Details of the room's exits.
*/
private String getExitString()
{
String returnString = "Exits:";
Set<String> keys = exits.keySet();
for(String exit : keys) {
returnString += " " + exit;
}
return returnString;
}
/**
* Return the room that is reached if we go from this room in direction
* "direction". If there is no room in that direction, return null.
* @param direction The exit's direction.
* @return The room in the given direction.
*/
public Room getExit(String direction)
{
return exits.get(direction);
}
}