java - 如何返回 RPG 游戏中的某个检查点行？

Question

我需要帮助在我的文字 RPG 游戏中设置检查点。我给用户两种选择，其中之一会导致他们被杀。他们死后，我想让他们回到检查点的起点，但我不知道该怎么办。

我尝试过 while (true) {, continue;, break;，但它只是搞乱了我的代码。我发布的部分非常困惑，但我希望您能看到我正在尝试做的事情。

import java.util.Scanner;

public class Tester {
    public static void main (String []args) {

    Scanner sc = new Scanner(System.in);

    while (true) {
           System.out.println("These men are on the other side of the street. They're carrying large laser rifles, and pointing them at civilians.");
           try {
                Thread.sleep(3000);
        } catch (InterruptedException e) {}
           System.out.println("You quickly find cover behind a large tree near the Square, and they haven't seen you yet.");
           try {
                Thread.sleep(3000);
        } catch (InterruptedException e) {}
           System.out.println("Do you choose to shoot as many as you can, or find a way to save the civilians? (Hint: shoot them or save people)");
           String input2 = sc.nextLine();

           switch(input2) {
           case "shoot them": 
               System.out.println("You decide to try to shoot as many as you can. You take down 2, but the 5 men remaining have taken cover. They now know exactly where you are now. They toss a grenade your way.");
           try {
               Thread.sleep(3000);
        } catch (InterruptedException e) {}
           System.out.println("*BOOM*");
           try {
               Thread.sleep(1000);
        } catch (InterruptedException e) {}
           System.out.println("You died by explosion.");
           try {
               Thread.sleep(2000);
        } catch (InterruptedException e) {}
           System.out.println("GAME OVER");
          continue;
           case "save people":
               System.out.println("Good decision..."); 
               break;



           }
        }
    }
}

如果用户写“射击他们”，结果是他们死亡，但代码不会返回到检查点。

Answer 1

我知道这不是 CodeReview，只是仅供引用，您可以将 throws InterruptedException 添加到您的主方法签名中，这样您就不必捕获所有这些异常。

实现 RPG 游戏的一种基本方法是使用对象图，也就是说，您有一个类 Option 和 Scenario 并遍历它来玩角色扮演游戏。例如:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

class Scratch {

    public static void main(String[] args) throws InterruptedException {
        Scanner scanner = new Scanner(System.in);

        Scenario root = new Scenario("Welcome to the forest", 500);
        Scenario left = new Scenario("You went left!", 500);
        Scenario right = new Scenario("You went right!", 500);

        Option step1a = new Option("Go left", left);
        Option step1b = new Option("Go right", right);
        Option step1c = new Option("Go back to the beginning", root);

        root.branches.add(step1a);
        root.branches.add(step1b);
        root.branches.add(step1c);

        Scenario current = root;

        while (true) {
            System.out.println(current.text);

            if (current.branches.size() == 0) break;

            Thread.sleep(current.delay);
            System.out.println("What would you like to do?");
            for (int i = 0; i < current.branches.size(); i++) {
                System.out.printf("%s. %s\n", i, current.branches.get(i).text);
            }
            int choice = Integer.parseInt(scanner.nextLine());
            current = current.branches.get(choice).result;
        }

        System.out.println("Game over!");
    }
}

class Scenario {

    List<Option> branches = new ArrayList<>();
    String text;
    int delay;

    public Scenario(String text, int delay) {
        this.text = text;
        this.delay = delay;
    }

}

class Option {

    Scenario result;
    String text;

    public Option(String text, Scenario result) {
        this.text = text;
        this.result = result;
    }

}

如果您有任何疑问，请告诉我。