Map Interface - Collection - Adventure Game Challenge.

동굴탐험. locaton, direction

Location Class  ...  Map<String, Interger> exits = new HashMap<>();

Main Class Map<Interger, Location> location= new HashMap<>();

그림과 같은 게임 프로그램 만들어보자.

 

 

> Main을 기본으로 위치설정(위치당 값설당-Map)

 

//  Location Class의 add exits method(Map exits)로 방향 설정.

 

 

 

 

1. 값 설정 코딩 짜보자.(Location class / Main class)

 

Location Class

package com.timbuchalka;

import java.util.HashMap;
import java.util.Map;


public class Location {
    private final int locationNum;
    private final String description;
    private final Map<String, Integer> exits;       //Map define    V
//Constructor
    public Location(int locationNum, String description) {
        this.locationNum = locationNum;
        this.description = description;
        this.exits = new HashMap<String, Integer>();        //      V
    }
//add method
    public void addExit(String direction, int location) {
        exits.put(direction, location);             //Map.put();  추가    v
    }
//getter
    public int getLocationNum() {
        return locationNum;
    }
//getter
    public String getDescription() {
        return description;
    }
//getter
    public Map<String, Integer> getExits() {
        return new HashMap<String, Integer>(exits);
    }                  // It's own object for secruity reasons.
}

Main Class

package com.timbuchalka;

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    private static Map<Integer, Location> locations = new HashMap<>(); // V
                                                                            //Location Class
    public static void main(String[] args) {
	    Scanner scanner = new Scanner(System.in);
//값추가
//map.put(scanner Number 입력값, Location값 설정-call constructor(locationNum,description));
        locations.put(0, new Location(0, "You are sitting in front of a computer learning Java"));
        locations.put(1, new Location(1, "You are standing at the end of a road before a small brick building"));
        locations.put(2, new Location(2, "You are at the top of a hill"));
        locations.put(3, new Location(3, "You are inside a building, a well house for a small spring"));
        locations.put(4, new Location(4, "You are in a valley beside a stream"));
        locations.put(5, new Location(5, "You are in the forest"));
//출력

        int loc = 1;
        while(true) {
            System.out.println(locations.get(loc).getDescription());
            if(loc == 0) {
                break;
            }

            loc = scanner.nextInt();
            if(!locations.containsKey(loc)) {
                System.out.println("You cannot go in that direction");
            }
        }

    }
}

//Output
D:\IT\JDK\jdk11.0.6_10\bin\java.exe "-javaagent:D:\IT\IDEA\IntelliJ IDEA Community Edition 2020.1\lib\idea_rt.jar=49801:D:\IT\IDEA\IntelliJ IDEA Community Edition 2020.1\bin" -Dfile.encoding=UTF-8 -classpath D:\IT\Java-Collections-Map-Continued-and-Adventure-Game-Source-code\out\production\Adventure com.timbuchalka.Main
You are standing at the end of a road before a small brick building
1
You are standing at the end of a road before a small brick building
3
You are inside a building, a well house for a small spring
5
You are in the forest
0
You are sitting in front of a computer learning Java

Process finished with exit code 0

2. exits 를 이용하여 방향설정까지 해보자. (W,E,N,S)

(3. 문장west,east,north,south으로 입력해도 W,E,N,S 으로 프로그램이 인식하도록)

 

Location Class - 바뀌는거 없음. constructor 에 한줄 추가

package com.timbuchalka;

import java.util.HashMap;
import java.util.Map;


public class Location {
    private final int locationNum;
    private final String description;
    private final Map<String, Integer> exits;

    public Location(int locationNum, String description) {
        this.locationNum = locationNum;
        this.description = description;
        this.exits = new HashMap<String, Integer>();
        this.exits.put("Q", 0);     //                      V
                        //어차피 방향설정시(Main) 모든 방향설정에 해당되어 걍 constructor에 넣어버림.
    }

    public void addExit(String direction, int location) {   //main서 방향설정시 이용예정. V
        exits.put(direction, location);
    }
    public int getLocationNum() {
        return locationNum;
    }

    public String getDescription() {
        return description;
    }

    public Map<String, Integer> getExits() {
        return new HashMap<String, Integer>(exits);
    }
}

Main

package com.timbuchalka;

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    private static Map<Integer, Location> locations = new HashMap<Integer, Location>();

    public static void main(String[] args) {

	    Scanner scanner = new Scanner(System.in);
// 값설정(key, value)
        locations.put(0, new Location(0, "You are sitting in front of a computer learning Java"));
        locations.put(1, new Location(1, "You are standing at the end of a road before a small brick building"));
        locations.put(2, new Location(2, "You are at the top of a hill"));
        locations.put(3, new Location(3, "You are inside a building, a well house for a small spring"));
        locations.put(4, new Location(4, "You are in a valley beside a stream"));
        locations.put(5, new Location(5, "You are in the forest"));

// 2. 방향설정 Location Class의 add method 이용
        locations.get(1).addExit("W", 2);       //key 1의 방향들    V
        locations.get(1).addExit("E", 3);
        locations.get(1).addExit("S", 4);
        locations.get(1).addExit("N", 5);
        //locations.get(0).addExit("Q",0);// 처음으로 -> 모든 방향설정에 공통이니 constructor에 설정하면 편함.

        locations.get(2).addExit("N", 5);      //key 2방향들
        //locations.get(0).addExit("Q",0);// 처음으로

        locations.get(3).addExit("W", 1);   //key 3방향들
        //locations.get(0).addExit("Q",0);// 처음으로

        locations.get(4).addExit("N", 1);   //key 4방향들
        locations.get(4).addExit("W", 2);
        //locations.get(0).addExit("Q",0);// 처음으로

        locations.get(5).addExit("S", 1);   //key 5방향들
        locations.get(5).addExit("W", 2);
        //locations.get(0).addExit("Q",0);// 처음으로


//3. The player should be able to type commands such as "Go West", "run South", or just "East"
// 입력을 문장으로 했을때, 방향값 정의> map.put(key, value);
        Map<String, String> vocabulary = new HashMap<String, String>(); //  V
        vocabulary.put("QUIT", "Q");
        vocabulary.put("NORTH", "N");
        vocabulary.put("SOUTH", "S");
        vocabulary.put("WEST", "W");
        vocabulary.put("EAST", "E");


        int loc = 1;
        while(true) {
            System.out.println(locations.get(loc).getDescription());
            if(loc == 0) {
                break;
            }
//방향 입력 //Location Class의 getExists = new HashMap<String, Integer>(exits)
            Map<String, Integer> exits = locations.get(loc).getExits(); //   V
            System.out.print("Available exits are ");
            for(String exit: exits.keySet()) {
                System.out.print(exit + ", ");
            }
            System.out.println();

            String direction = scanner.nextLine().toUpperCase(); //모든 입력값 대문자로 인식.
  //3.
            if(direction.length() > 1) {                // 입력을 문장으로 했을때,한글자로 output
                String[] words = direction.split(" ");
                for(String input : words) {
                    if(vocabulary.containsKey(input)) {
                        direction = vocabulary.get(input);
                        break;
                    }
                }
            }
// 검색 - 방향 출력
            if(exits.containsKey(direction)) {
                loc = exits.get(direction);

            } else {
                System.out.println("You cannot go in that direction");
            }
        } //while 끝

    }
}

Output

 

D:\IT\JDK\jdk11.0.6_10\bin\java.exe "-javaagent:D:\IT\IDEA\IntelliJ IDEA Community Edition 2020.1\lib\idea_rt.jar=51225:D:\IT\IDEA\IntelliJ IDEA Community Edition 2020.1\bin" -Dfile.encoding=UTF-8 -classpath D:\IT\Java-Collections-Adventure-Game-challenge-Source-code\out\production\Adventure com.timbuchalka.Main
You are standing at the end of a road before a small brick building
Available exits are Q, S, E, N, W, 
go west
You are at the top of a hill
Available exits are Q, N, 
w
You cannot go in that direction
You are at the top of a hill
Available exits are Q, N, 
e
You cannot go in that direction
You are at the top of a hill
Available exits are Q, N, 
n
You are in the forest
Available exits are Q, S, W, 
s
You are standing at the end of a road before a small brick building
Available exits are Q, S, E, N, W, 
join north
You are in the forest
Available exits are Q, S, W, 

참고) Spring split method

https://gb-codingworld.tistory.com/60