Java实现角色扮演游戏的示例代码

前言

《模式策略的角色扮演游戏》游戏是自制的角色扮演游戏。选择两个角色，然后进行PK，可用来学习JAVA的接口，继承和多态。

主要设计

1.事先设计好英雄，血量和相关技能。

2.为了让玩家能与程序互动，使用下面这个命令可达效果

Scanner sc = new Scanner(System.in);

3.运行StartMain里的main方法

4.设计四个角色

1.Queen 2.King 3.Knight 4.Troll

5.角色可选择使用魔法攻击或者武器攻击

6.血量为0，则结束战斗

7.抽象出游戏角色类，然后不同的角色再继承去实现自己的个性化。

8.魔法行为可用接口定义，不同的魔法效果，再去实现这个魔法行为接口。

9.开发环境使用JDK8+IDEA

功能截图

游戏开始：

选择角色

操作技能

代码实现

游戏启动类

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

System.out.println("welcome to the game! please create two rolls.");
System.out.println("please choose the character of the first roll: 1.Queen 2.King 3.Knight 4.Troll");
Scanner sc=new Scanner(System.in);
int i=sc.nextInt();
/**
    * 第一个角色的创建
    */
if(i==1)
{

Scanner sc1=new Scanner(System.in);
             String str=null;
             System.out.print("请输入角色名字:");
 str=sc1.nextLine();
 Characters character1=new Queen(str);
 System.out.println("please choose the character of the second roll: 1.Queen 2.King 3.Knight 4.Troll");
 /**hitpoint
  * 第二个角色的创建
  */
Scanner sc2=new Scanner(System.in);
int j=sc2.nextInt();
if(j==1)
{
     Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Queen(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     /**
      * 当前玩家若被使用frozen魔法，失去一次进攻或使用魔法的机会
      */
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {

System.out.println("please choose the first player's operation:1.fight 2.do magic");
     /**
      * 用户键入选择使用魔法还是进攻
      */
     Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   /**
    * 判断魔法值是否大于80，若魔法值小于80则无法进攻，必须使用recover魔法恢复魔法值
    */
     if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   /**
    * 若对方上回合使用invisible魔法，则本回合攻击无效
    */
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   /**
    * 跳出攻击
    */
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     /**
      * 一位玩家进攻或使用魔法结束后根据对方hitpoint是否小于等于零来判断游戏是否结束
      */
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
     /**
      * 轮到第二位玩家开始操作
      * 以下情况与第一位玩家操作阶段一致
      */
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }

}
else if(j==2)
/**
* 当第二位玩家的选择为2号角色时
* 以下操作同上
*/
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new King(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if(j==3)
/**
* 当第二位玩家的选择为3号角色时
* 以下操作同上
*/
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Knight(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if (j==4)
/**
* 当第二位玩家的选择为4号角色时
* 以下操作同上
*/
{

Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Troll(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0){
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}

}
else if(i==2)
/**
* 一号玩家创建角色的第二种选择，以下操作与第一种选择相似
*/
{
Scanner sc1=new Scanner(System.in);
       String str=null;
       System.out.print("请输入角色名字:");
 str=sc1.nextLine();
 Characters character1=new King(str);
 System.out.println("please choose the character of the second roll: 1.Queen 2.King 3.Knight 4.Troll");
Scanner sc2=new Scanner(System.in);
int j=sc2.nextInt();
if(j==1)
{
     Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Queen(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }

}
else if(j==2)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new King(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if(j==3)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Knight(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0) {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if (j==4)
{

Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Troll(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0){
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}

}
else if(i==3)
/**
* 一号玩家创建角色的第三种选择，以下操作与第一种选择相似
*/
{
Scanner sc1=new Scanner(System.in);
       String str=null;
       System.out.print("请输入角色名字:");
 str=sc1.nextLine();
 Characters character1=new Knight(str);
 System.out.println("please choose the character of the second roll: 1.Queen 2.King 3.Knight 4.Troll");
Scanner sc2=new Scanner(System.in);
int j=sc2.nextInt();
if(j==1)
{
     Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Queen(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0);{
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }

}
else if(j==2)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new King(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0); {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if(j==3)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Knight(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0){
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if (j==4)
{

Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Troll(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0){
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}

}
else if(i==4)
/**
* 一号玩家创建角色的第四种选择，以下操作与第一种选择相似
*/
{
Scanner sc1=new Scanner(System.in);
       String str=null;
       System.out.print("请输入角色名字:");
 str=sc1.nextLine();
 Characters character1=new Troll(str);
 System.out.println("please choose the character of the second roll: 1.Queen 2.King 3.Knight 4.Troll");
Scanner sc2=new Scanner(System.in);
int j=sc2.nextInt();
if(j==1)
{
     Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Queen(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0);{
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }

}
else if(j==2)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new King(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0); {
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if(j==3)
{
Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Knight(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0){
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character2.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}
else if (j==4)
{

Scanner sc3=new Scanner(System.in);
             String str1=null;
             System.out.print("请输入角色名字:");
 str1=sc3.nextLine();
     Characters character2= new Troll(str1);
     while(character1.hitpoint>0&&character2.hitpoint>0);{
     if(character1.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character1.frozenchoice=0;
     }
     else {
     System.out.println("please choose the first player's operation:1.fight 2.do magic");
       Scanner sc4=new Scanner(System.in);
   int h=sc4.nextInt();
   if(character1.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   h=2;
   }
   ok: if(h==1)
   {
   if(character2.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character2.invisiblechoice=0;
   break ok;
   }
   character1.fight(character2);
   }
   if(h==2)
   {
     character1.performMagic(character2);
   }
   }
     if(character1.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character2.name+"win");
     System.exit(0);
     }
   if(character2.frozenchoice==1)
     {
     System.out.println("the player has been frozen, skip to next player");
     character2.frozenchoice=0;
     }
   else {
       System.out.println("please choose the second player's operation:1.fight 2.do magic");
       Scanner sc5=new Scanner(System.in);
   int g=sc5.nextInt();
   if(character2.magicpoint<80)
   {
   System.out.println("your magicpoint is too low, please do magic to recover");
   g=2;
   }
   ok1: if(g==1)
   {
   if(character1.invisiblechoice==1)
   {
   System.out.println("the opponebt is invisible, skip this fight");
   character1.invisiblechoice=0;
   break ok1;
   }
   character2.fight(character1);
   }
   if(g==2)
   {
     character2.performMagic(character1);
   }
   }
   if(character2.hitpoint<=0)
     {
     System.out.println("the"+character1.name+"is dead, the"+character1.name+"win");
     System.exit(0);
     }
     }
}

}
}
}

抽象类：游戏角色类

public abstract class Characters {
protected String name;
protected WeaponBehavior weapon;
protected int hitpoint=100;
protected MagicBehavior magic;
protected int magicpoint=100;
protected int damage;
protected int defense;
protected int damagetotal;
protected int invisiblechoice;
protected int frozenchoice;
public void fight(Characters C)
{
System.out.println("fight:"+C.name);
System.out.println("please choose your weapon:1.Sword 2.Knife 3.Bow and Arrow 4.Axe");
Scanner sc=new Scanner(System.in);
int i=sc.nextInt();
/**
* 根据用户键盘输入动态设置角色武器
*/
switch(i) {
case 1:{
this.setWeaponBehavior(new SwordBehavior());
this.weapon.useWeapon();
this.magicpoint=this.magicpoint-6;
this.damagetotal=this.damage+4;
}
break;
case 2:{
this.setWeaponBehavior(new KnifeBehavior());
this.weapon.useWeapon();
this.magicpoint=this.magicpoint-15;
   this.damagetotal=this.damage+2;
}
break;
case 3:{
this.setWeaponBehavior(new BowAndArrowBehavior());
this.weapon.useWeapon();
this.magicpoint=this.magicpoint-12;
this.damagetotal=this.damage+7;
break;
}
case 4:{
this.setWeaponBehavior(new AxeBehavior());
this.weapon.useWeapon();
this.magicpoint=this.magicpoint-4;
this.damagetotal=this.damage+3;
}
break;

}
System.out.println(C.name+" : hitpoint-"+this.damagetotal);
C.hitpoint=C.hitpoint-this.damagetotal;

}
public void performMagic(Characters C)
{
System.out.println("do magic to "+C.name);
System.out.println("please choose the magic 1.invisible 2.heal 3.frozen");
Scanner sc=new Scanner(System.in);
int i=sc.nextInt();
System.out.println("please choose the magic receiver: 1.yourself 2.opponent");
Scanner sc1=new Scanner(System.in);
int a=sc1.nextInt();
/**
* 根据用户键盘输入设置魔法以及作用对象
*/
if(a==1) {
switch(i) {
case 1:{
this.setMagicBehavior(new InvisibleBehavior());
this.invisiblechoice =1;
this.magic.useMagic();
}
break;
case 2:{
this.setMagicBehavior(new HealBehavior());
this.magic.useMagic();
System.out.println("hitpoint +5, magicpoint +10");
this.hitpoint=this.hitpoint+5;
this.magicpoint=this.magicpoint+10;
}
break;
case 3:{
this.frozenchoice=1;
this.setMagicBehavior(new FrozenBehavior());
this.magic.useMagic();
}
break;
}
}
else if(a==2) {
switch(i) {
case 1:{
this.setMagicBehavior(new InvisibleBehavior());
C.invisiblechoice =1;
this.magic.useMagic();
}
break;
case 2:{
this.setMagicBehavior(new HealBehavior());
this.magic.useMagic();
System.out.println("hitpoint +5, magicpoint +10");
C.hitpoint=this.hitpoint+5;
C.magicpoint=this.magicpoint+10;
}
break;
case 3:{
C.frozenchoice=1;
this.setMagicBehavior(new FrozenBehavior());
this.magic.useMagic();
}
break;
}

}
else {
System.out.println("please input correct choice!");
}

}
public void setWeaponBehavior(WeaponBehavior w)
{
this.weapon=w;
}/**动态设置角色武器*/
public void setMagicBehavior(MagicBehavior m)
{
this.magic=m;
}/**动态设计角 * 法*/
public String getName()
{
return this.name;
}
public void display()
{
System.out.println("It's a"+this.name);
}
}

魔法行为接口

public interface MagicBehavior {
void useMagic();
}

来源：https://juejin.cn/post/7067521603612966942