92 lines
2.4 KiB
Java
Executable File
92 lines
2.4 KiB
Java
Executable File
import java.util.Set;
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import java.util.HashMap;
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/**
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* Class Room - a room in an adventure game.
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*
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* This class is part of the "World of Zuul" application.
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* "World of Zuul" is a very simple, text based adventure game.
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*
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* A "Room" represents one location in the scenery of the game. It is
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* connected to other rooms via exits. For each existing exit, the room
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* stores a reference to the neighboring room.
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*
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* @author Michael Kölling and David J. Barnes
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* @version 2016.02.29
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*/
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public class Room
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{
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private String description;
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private HashMap<String, Room> exits; // stores exits of this room.
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/**
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* Create a room described "description". Initially, it has
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* no exits. "description" is something like "a kitchen" or
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* "an open court yard".
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* @param description The room's description.
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*/
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public Room(String description)
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{
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this.description = description;
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exits = new HashMap<>();
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}
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/**
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* Define an exit from this room.
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* @param direction The direction of the exit.
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* @param neighbor The room to which the exit leads.
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*/
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public void setExit(String direction, Room neighbor)
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{
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exits.put(direction, neighbor);
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}
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/**
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* @return The short description of the room
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* (the one that was defined in the constructor).
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*/
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public String getShortDescription()
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{
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return description;
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}
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/**
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* Return a description of the room in the form:
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* You are in the kitchen.
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* Exits: north west
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* @return A long description of this room
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*/
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public String getLongDescription()
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{
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return "You are " + description + ".\n" + getExitString();
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}
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/**
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* Return a string describing the room's exits, for example
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* "Exits: north west".
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* @return Details of the room's exits.
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*/
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private String getExitString()
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{
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String returnString = "Exits:";
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Set<String> keys = exits.keySet();
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for(String exit : keys) {
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returnString += " " + exit;
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}
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return returnString;
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}
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/**
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* Return the room that is reached if we go from this room in direction
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* "direction". If there is no room in that direction, return null.
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* @param direction The exit's direction.
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* @return The room in the given direction.
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*/
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public Room getExit(String direction)
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{
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return exits.get(direction);
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}
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}
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