[자바 객체지향] 인터페이스 활용한 가위바위보 게임 Rps.java

Game

package jse.alabama.rps;
 
import lombok.Data;
 
@Data
public class Game {
    int rock; 
    int paper; 
    int scissors; 
    int comVal; 
    String rpsVal; 
    public void setRpsVal(int val) {
        switch (val) {
        case 1: rpsVal = "rock";break;
        case 2: rpsVal = "paper";break;
        case 3: rpsVal = "scissors";break;
        default:break;
        }
    }
    public void setComVal() {
        this.comVal = (int) (Math.random()*3+1);
    }
}
 

IGame

package jse.alabama.rps;
 
public interface IGame {
    public String getResult(int result);
    public String playGame(int a, int b);
}
 

GameValidation

package jse.alabama.rps;
 
public class GameValidation {
    public String showRange(int begin, int end){
        return String.format("Please enter only values from %d to %d.", begin, end);
    }
    public String showInt() {
        return "Please enter an integer value only.";
    }
 
}
 

GameService

package jse.alabama.rps;
 
public class GameService implements IGame {
    Game game = new Game();
    @Override
    public String getResult(int a) {
        String result = "";
        switch (a) {
        case 1:result = "win";break;
        case 2:result = "loss";break;
        case 3:result = "tie";break;
        default:break;
        }
        return result;
    }
    @Override
    public String playGame(int gamer, int computer) {
        int win = 0;
        if (gamer==computer) {
            return getResult(3);
        }
        switch (Math.abs(gamer-computer)) {
        case 1: win = (gamer > computer) ? gamer : computer;break;
        case 2: win = (gamer > computer) ? computer : gamer;break;
        default:
            break;
        }
        String winner = (win==gamer) ? "Gamer":"Computer";
        game.setRpsVal(gamer);
        String userRPS = game.getRpsVal();
        game.setRpsVal(computer);
        String comRPS = game.getRpsVal();
        return "Computer : "+comRPS+" , Gamer : "+userRPS+" \n  Winnder is "+ winner;
    }
 
}
 

GameController

package jse.alabama.rps;
 
import java.util.Scanner;
 
public class GameController {
    public static void main(String[] args) {
        System.out.println("Let's start the rock-paper-scissors game..");
        IGame service = new GameService(); // 깊은 복사(deep copy)
        GameValidation valid = new GameValidation();
        Game game = new Game();
        Scanner scanner = new Scanner(System.in);
        int start=1,limit=3;
        while (true) {
            System.out.println("Please enter Scissors:1 Rock:2 Paper:3");
            int userVal = scanner.nextInt();
            if (userVal<start||userVal>limit) {
                System.out.println(valid.showRange(start, limit));
                continue;
            }
            game.setComVal();
            System.out.println(service.playGame(userVal, game.getComVal()));
            
        }
    }
}