Game Of Trust - Stage 1

Action.java

public enum Action {
    COOPERATE,
    CHEAT
}

Game.java

public class Game {


    public static void main(String[] args) {
        Machine machine = new Machine();
        Player player2 = new Player("Player-1", 1);
        Player player1 = new Player("Player-2", 1);


        for (int i = 0; i < 1; i++) {
            machine.execute(player1, player2);
        }

        System.out.println("Player 1 has: " + player1.getCoin() + " coins.");
        System.out.println("Player 2 has: " + player2.getCoin() + " coins. ");

    }
}

Machine.java

public class Machine {

    public Machine() {
    }

    public void execute(Player player1, Player player2) {
        Action player1Action = player1.getAction();
        Action player2Action = player2.getAction();
        player1.update(getRewardForAction(player2Action) - getContributionForAction(player1Action));
        player2.update(getRewardForAction(player1Action) - getContributionForAction(player2Action));
    }

    private int getRewardForAction(Action action) {
        if (action.equals(Action.COOPERATE)) {
            return 3;
        } else {
            return 0;
        }
    }

    private int getContributionForAction(Action action) {
        if (action.equals(Action.COOPERATE)) {
            return 1;
        } else {
            return 0;
        }
    }
}

Player.java

import java.util.Scanner;

public class Player {
    private String name;
    private int coin;

    public Player(String name, int coin) {
        this.name = name;
        this.coin = coin;
    }

    public int getCoin() {
        return coin;
    }

    public Action getAction() {

        Scanner reader = new Scanner(System.in);
        System.out.println(name +" Enter 1 to co-operate 0 to cheat: ");
        int n = reader.nextInt();
        if (n == 1) {
            return Action.COOPERATE;
        } else {
            return Action.CHEAT;
        }
    }

    public void update(int delta) {
        coin += delta;
    }
}