我正在为我的编程制作一个基于文本的 Rpg Class 并且遇到了错误

Question

在我的代码中，我使用 x 和 y 线在游戏中四处移动，它应该可以正常工作，但在大约 490 行时，它给了我一个 else 没有，即使有一个，当我尝试使用 wasd它去了它应该去的地方（抱歉代码转储，我无法确定我是新手的问题 java）

  /**
     * @(#)FSE.java
     *
     * FSE application
     *
     * @author 
     * @version 1.00 2015/1/7
     */
         import java.io.*;
         import java.util.Random;
        public class FSE {

        public static void main(String[] args) {    

          BufferedReader input=new BufferedReader(new InputStreamReader(System.in));
          // Declaring Variables
            String Name, Move, Attack;
            int x, y, Combat, Creature, HP, HP2, Strike, Strike2, loop;
            x=0;
            y=0; 
            Combat=0;
            Creature=0;
            Move="";
            Attack="";
            HP=0;
            HP2=0;
            Strike=0;
            Strike2=0;
            loop=0;
                    // Introduction to start the game off
            System.out.println("Your Awake Traveler Do You Remember What   Happened");
            try {
          Thread.sleep(2500L);
            }
    catch (Exception e) {}  
                System.out.println("You Look Around At What looks Like A Old Cave And See A Colapsed Entrance To The North");
                    try {
          Thread.sleep(2500L);
            }
    catch (Exception e) {}
            System.out.println("Do Remember What Your Name Is");
                try{
                    Name=input.readLine();
                 }

                 catch (IOException ioe){
                    System.out.println("input error");
                 }
                 while(loop==0){
                    System.out.println("What Way Would You Like To Navigate Use WASD To Choose A Direction");
                 try{
                    Move=input.readLine();
                 }
                 // Movement Control Keys
                 catch (IOException ioe){
                    System.out.println("input error");          
                 }  
                 if(Move.equals("w")){ // Upward Movement
                    y+=1;   
                    System.out.println("*****"+y);
                 }  
                 else if(Move.equals("d")){ // Right Movement
                    x+=1;
                 }  
                 else if(Move.equals("s")){ // Downward Movement
                    y-=1;
                 }  
                 else{
                    x-=1; // Left Movement Key ("a")
                 }
                 if (y==-1 && x==0){ // First-Entrance into the game's combat
                    System.out.println("You have now entered the cave.");
                    Combat=1;
                    while(Combat==1);{
                        System.out.println("A Goblin Has Attacked");
                        HP=20;
                        HP2=8;
                        System.out.println("Press A To Attack");
                        try{
                            Attack=input.readLine();
                        }
                        catch (IOException ioe){
                            System.out.println("input error");          
                        }   
                        if(Attack.equals("A")){
                            Random randomGenerator=new Random();
                            Strike=randomGenerator.nextInt(10);
                            Strike+=5;
                            HP2-=Strike;
                            System.out.println("You Did "+Strike+" Damage");
                            System.out.println("The Goblin Has "+HP2+" Life Left");
                            Strike2=randomGenerator.nextInt(5);
                            Strike2+=5;
                            HP-=Strike2;
                            System.out.println("The Goblin Did "+Strike2+" Damage");
                            System.out.println("You Have "+HP+" Life Left");
                            if(HP<=0){
                                System.out.println("You Died. Game Over.");
                                System.exit(0);
                            }
                            else if(HP2<=0){
                                Combat=0;
                                System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
                            }

                            }
                            }               
                             }
                else if (y==-2 && x==0){ // Path leading downwards from entrance pointt
    System.out.println("You have entered a new room in the cave!");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Imp Has Attacked");
    HP=20;
    HP2=7;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Imp Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(2);
    Strike2+=2;
    HP-=Strike2;
    System.out.println("The Imp Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Imp And May Continue In Your Quest"); 
    }

    }
    } 
                }   
    else if (y==-3 && x==0){
       System.out.println("You have entered the next room.");
       Combat=1;
           while(Combat==1);{
              System.out.println("A Goblin Has Attacked"); 
              HP=20;
              HP2=8;
              System.out.println("Press A To Attack");
              try{
                 Attack=input.readLine();
              }
              catch (IOException ioe){
                 System.out.println("input error");          
              } 
              if(Attack.equals("A")){
                 Random randomGenerator=new Random();
                 Strike=randomGenerator.nextInt(10);
                 Strike+=5;
                 HP2-=Strike; 
                 System.out.println("You Did "+Strike+" Damage");
                 System.out.println("The Goblin Has "+HP2+" Life Left");
                 Strike2=randomGenerator.nextInt(5);
                 Strike2+=5;
                 HP-=Strike2;
        System.out.println("The Goblin Did "+Strike2+" Damage");
        System.out.println("You Have "+HP+" Life Left");
        if(HP<=0){
                System.out.println("You Died. Game Over.");
        System.exit(0);
        }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
    }

    }
    }    
    }
    else if (y==-4 && x==0){
    System.out.println("You have entered the final room on the path! The path does not go any further.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Troll Has Attacked");
    HP=20;
    HP2=10;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Troll Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(7);
    Strike2+=7;
    HP-=Strike2;
    System.out.println("The Troll Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Troll And May Continue In Your Quest");   
    }

    }
    }    
    }
    else if (y==-1 && x==1){ // Right path from the entrance point
    System.out.println("You have entered a new room in the cave!");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Goblin Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(5);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
    }

    }
    }    
    }
    else if (y==-1 && x==2){
    System.out.println("You have entered the next room.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Giant Spider Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Giant Spider Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(6);
    Strike2+=6;
    HP-=Strike2;
    System.out.println("The Giant Spider Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Giant Spider And May Continue In Your Quest");    
    }

    }
    }    
    }
    else if (y==-1 && x==3){
    System.out.println("You have entered the next room.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Imp Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Imp Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(2);
    Strike2+=2;
    HP-=Strike2;
    System.out.println("The Imp Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
        System.out.println("You Died. Game Over."); 
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Imp And May Continue In Your Quest"); 
    }

    }
    }    
    }
    else if (y==-2 && x==3){ //Path going downwards towards the boss
    System.out.println("You have entered the next room.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Giant Spider Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(5);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
    }

    }
    }    
    }
    else if (y==-3 && x==3){
    System.out.println("You have entered the next room.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Goblin Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(5);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
    }

    }
    }    
    }
    else if (y==-4 && x==3){
    System.out.println("You have entered the next room.");
    Combat=1;
    while(Combat==1);{
    System.out.println("A Goblin Has Attacked");
    HP=20;
    HP2=8;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(5);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Goblin And May Continue In Your Quest");  
    }

    }
    }    
    }
    else if (y==-4 && x==1){
    System.out.println("You have entered the final room in the cave! You are now in the Demon's Domain!"); //Final Boss Battle
    System.out.println("*"+y+"*"+x+"*");
    Combat=1;
    while(Combat==1);{
    System.out.println("The Demon has attacked");
    HP=20;
    HP2=15;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(8);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Demon! Conagradulations!");   
    }

    }
    }    
    }
    }
        else if (y==-4 && x==2){
    System.out.println("You have entered the final room in the cave! You are now in the Demon's Domain!"); //Final Boss Battle
    system.out.println("*"+y+"*"+x+"*");
    Combat=1;
    while(Combat==1);{
    System.out.println("The Demon has attacked");
    HP=20;
    HP2=15;
    System.out.println("Press A To Attack");
    try{
    Attack=input.readLine();
    }
    catch (IOException ioe){
    System.out.println("input error");          
    }   
    if(Attack.equals("A")){
    Random randomGenerator=new Random();
         Strike=randomGenerator.nextInt(10);
    Strike+=5;
    HP2-=Strike;
    System.out.println("You Did "+Strike+" Damage");
    System.out.println("The Goblin Has "+HP2+" Life Left");
         Strike2=randomGenerator.nextInt(8);
    Strike2+=5;
    HP-=Strike2;
    System.out.println("The Goblin Did "+Strike2+" Damage");
    System.out.println("You Have "+HP+" Life Left");
    if(HP<=0){
            System.out.println("You Died. Game Over.");
    System.exit(0);
    }
    else if(HP2<=0){
    Combat=0;
    System.out.println("You Have Defeated The Demon! Conagradulations!");   
    }

    }
    }    
    }
    }
    // Spaces in the game where you are not allowed to go
    if (y==1 && x==0);{
    System.out.println("You cannot go this way.");
    y=0;
    x=0;
    }
    else if (y==0 && x==-1){
    System.out.println("You cannot go this way.");
    y=0;
    x=0;
    }
    else if (y==0 && x==1){
    System.out.println("You cannot go this way.");
    y=-1;
    x=0;
    }
    else if (y==0 && x==2){
    System.out.println("You cannot go this way.");
    y=-1;
    x=2;
    }
    else if (y==0 && x==3){
    System.out.println("You cannot go this way.");
    y=-1;
    x=3;
    }
    else if (y==-1 && x==4){
    System.out.println("You cannot go this way.");
    y=-1;
    x=3;
    }
    else if (y==-2 && x==4){
    System.out.println("You cannot go this way.");
    y=-2;
    x=3;
    }
    else if (y==-3 && x==4){
    System.out.println("You cannot go this way.");
    y=-3;
    x=3;
    }
    else if (y==-4 && x==4){
    System.out.println("You cannot go this way.");
    y=-4;
    x=3;
    }
    else if (y==-5 && x==0){
    System.out.println("You cannot go this way.");
    y=-4;
    x=0;
    }
    else if (y==-2 && x==1){
    System.out.println("You cannot go this way.");
    y=-1;
    x=0;
    }
    else if (y==-2 && x==-2){
    System.out.println("You cannot go this way.");
    y=-1;
    x=3;
    }   
    else if (y==-3 && x==1){
    System.out.println("You cannot go this way.");
    y=-3;
    x=0;
    }
    else if (y==-5 && x==3){
    System.out.println("You cannot go this way.");
    y=-4;
    x=3;
    }
    else{
        System.out.println("You cannot go this way")
            y=-3;
            x=3;
    }       

            }
    }

Answer 1

我尝试了 3 次从 Stack Overflow 复制和粘贴您的代码。

您有 4 个语法错误。您粘贴的代码甚至无法编译。

你最大的问题是你的整个 Java 应用程序只有一个方法（主要）。

Java 的设计目的是让您可以将代码分解成很多很多方法，如果有必要，还可以分解成很多 classes。当你创建这样的东西时，你应该使用 model / view / controller (MVC) pattern。 MVC 模式允许您分离您的关注点，并让您能够一次专注于程序的一小部分。

先看看你的介绍吧。您两次显示消息，然后等待。下面介绍如何创建一个方法来执行此操作。

private static void displayMessageAndWait(String message) {
    System.out.println(message);
    try {
        Thread.sleep(2500L);
    } catch (InterruptedException e) {
    }
}

用这个方法，你的介绍现在是这样的。

    // Introduction to start the game off
    String message = "You're Awake Traveler. Do You Remember What Happened?";
    displayMessageAndWait(message);
    message = "You Look Around At What looks Like A Old Cave " +
            "And See A Collapsed Entrance To The North.";
    displayMessageAndWait(message);

您是否看到创建方法如何记录代码的作用？通过将您的代码分解成非常小的片段，并将这些片段放入一个方法中，您可以让您的 Java 应用程序更容易理解，也更容易让其他人理解。

接下来，我们将看一下取名部分。我们将把代码放在一个名为 getName 的方法中。聪明啊

private static String getName(BufferedReader input) {
    System.out.println("Do You Remember What Your Name Is?");
    try {
        String name = input.readLine();
        return name;
    } catch (IOException ioe) {
        ioe.printStackTrace();
        return "";
    }
}

现在，main 方法中的代码如下所示。

    name = getName(input);

Java 变量名和方法名以小写字母开头。这样我们就可以一眼区分 class 名称和方法名称或变量名称。

到目前为止，我所做的只是分解您的代码。 Java 的真正威力在于当您创建 class 可用于为您的 Java 应用程序建模时。

这里有一个房间模型 class，作为示例。

public class Room {

    private boolean isCreatureInRoom;

    private int x;
    private int y;

    private String description;

    public Room(int x, int y, String description) {
        this.x = x;
        this.y = y;
        this.description = description;
        this.isCreatureInRoom = false;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public String getDescription() {
        return description;
    }

    public boolean isCreatureInRoom() {
        return isCreatureInRoom;
    }

    public void setCreatureInRoom(boolean isCreatureInRoom) {
        this.isCreatureInRoom = isCreatureInRoom;
    }

}

现在，我们可以通过为我们想要的每个房间创建 Room class 的实例来创建任意数量的房间。

希望这些信息足以让您返回并将您的程序分解为许多方法和 classes。

我正在为我的编程制作一个基于文本的 Rpg Class 并且遇到了错误

I Am Making A Text Based Rpg For My Programing Class And Have Encountered Errors

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