一．实验目的

1. 掌握面向对象程序设计的方法。
   明确类与对象的概念，掌握面向对象设计七大原则；
2. 掌握常见的设计模式以及类图的描述。

二、UML类图

三、实验要求
1.功能描述几乎所有的RPG游戏（一种源自《龙与地下城》的游戏类型）在进入游戏时都会让用户 自己来创建自己喜欢的角色。
本次上机要求编写一个简化的创建游戏角色的程序。

2.游戏角色应有的属性本题目要求的游戏角色应有以下属性：名字、性别、种族、职业、力量、敏捷、体力、智力、智慧、生命值和魔法值。
名字：不超过50个字符。
性别：可以选择男性和女性。
种族：一共可选五个种族，人类、精灵、兽人、矮人和元素。
职业：可选六种职业，狂战士、圣骑士、刺客、猎手、祭司和巫师。其余属性均为整数。
本题目要求首先用户输入角色姓名，然后由用户选择角色性别，然后由用户选择种族，然后选择职业，然后自动分配力量、敏捷、体力、智力和智慧属性，并计算生命值和魔法值。
生命值=体力*20。
魔法值=（智力+智慧）*10。

3.职业限制很多职业会限制某些种族选择，例如兽人不能就职圣骑士等等，种族和职业的限制表如下：

4.初始属性
本题目要求力量、敏捷、体力、智力和智慧要求是随机值（利用随机数函数来取得随机数），但是五项属性的总和应该是100，并且应该和职业相关。例如狂战士的体力和力量就要比较高，而巫师需要较高的智力，而祭司则需要较高的智慧。各职业初始属性的大致比例应遵从下表：

四、程序实现
姓名和性别

public class Role {private String name;private int gender;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getGender() {return gender;}public void setGender(int gender) {this.gender = gender;}public int Setting() {System.out.println("请输入角色姓名：");Scanner sc = new Scanner(System.in);this.name = sc.next();while (true) {System.out.println("输入角色性别：（0.男    1.女）");this.gender = sc.nextInt();if (gender == 0 || gender == 1) {break;} else {System.out.println("请选择0或1来确认性别");}}return gender;}public void output(){System.out.println("------------------------");System.out.println("姓名\t\t\t"+this.name);System.out.println("------------------------");if(this.gender==0){System.out.println("性别\t\t\t"+"男性");}else{System.out.println("性别\t\t\t"+"女性");}}
}

种族和职业

import java.util.Scanner;public class raceAndCareer {private int race;private int career;private String[] races = {"人类","精灵","兽人","矮人","元素"};private String[] careers = {"狂战士","圣骑士","刺客","猎手","祭司","巫师"};public int getRace() {return race;}public void setRace(int race) {this.race = race;}public int getCareer() {return career;}public void setCareer(int career) {this.career = career;}public int SelectRace(){while(true){System.out.println("请选择角色的种族（0人类，1精灵，2兽人，3矮人，4元素）：");Scanner sc = new Scanner(System.in);this.race = sc.nextInt();if(race >= 0 && race <= 4){//输入正确跳出循环break;}else{System.out.println("请输入0-4之间的数字选择种族");}}return race;}public int SelectCareer(int race){switch(race){case 0:while(true){System.out.println("请选择职业（0狂战士，1圣骑士，2刺客，3猎手，4祭司，5巫师）：");Scanner sc = new Scanner(System.in);if(career >= 0 && career <=5){//输入正确跳出循环break;}else{System.out.println("请输入0-5之间的数字选择职业。");}}break;case 1:while(true){System.out.println("请选择职业（2刺客，3猎手，4祭司，5巫师）：");Scanner sc = new Scanner(System.in);this.career = sc.nextInt();if(career >= 2 && career <= 5){break;}else{System.out.println("请输入2-5之间的职业选择职业");}}break;case 2:while(true){System.out.println("请选择职业（0狂战士，3猎手，4祭司）：");Scanner sc = new Scanner(System.in);this.career = sc.nextInt();if(career == 0 || career == 3 || career == 4){break;}else{System.out.println("请输入0、3、4选择职业");}}break;case 3:while(true){System.out.println("请选择职业（0狂战士，1圣骑士，4祭司）：");Scanner sc = new Scanner(System.in);this.career = sc.nextInt();if(career == 0 || career == 1 || career == 4){break;}else{System.out.println("请输入数字0、1或4选择职业");}}break;case 4:while(true){System.out.println("请选择职业（4祭司，5巫师）：");Scanner sc = new Scanner(System.in);this.career = sc.nextInt();if(career == 4 || career == 5){break;}else{System.out.println("请输入4或5来选择职业！");}}break;default:break;}return career;}public void output(){System.out.println("-----------------------");System.out.println("种族\t\t\t"+races[this.race]);System.out.println("------------------------");System.out.println("职业\t\t\t"+careers[this.career]);}
}

职业和属性

import java.util.Random;public class CareerAttribute {private int strength;private int flexibility;private int physical;private int intelligence;private int wisdom;private int HP;  //生命值private int MP;  //魔法值public int getStrength() { return strength;}public void setStrength(int strength) {this.strength = strength;}public int getFlexibility() { return flexibility;}public void setFlexibility(int flexibility) { this.flexibility = flexibility; }public int getPhysical() { return physical; }public void setPhysical(int physical) { this.physical = physical; }public int getIntelligence() { return intelligence; }public void setIntelligence(int intelligence) { this.intelligence = intelligence; }public int getWisdom() { return wisdom; }public void setWisdom(int wisdom) { this.wisdom = wisdom; }public int getHP() { return HP; }public void setHP(int HP) { this.HP = HP; }public int getMP() { return MP; }public void setMP(int MP) { this.MP = MP; }public void AutoAttribute(int str,int flex,int phy,int intell,int wis){int sum = 0;Random random = new Random();do{strength = random.nextInt(5)%10 + str;flexibility = random.nextInt(5)%10 + flex;physical = random.nextInt(5)%10 + phy;intelligence = random.nextInt(5)%10 + intell;wisdom = random.nextInt(5)%10 + wis;sum = strength + flexibility + physical + intelligence + wisdom;}while(sum != 100);HP = physical * 20;MP = (wisdom + intelligence) *10;}public void initialAttribute(int career){if(career == 0){AutoAttribute(40,20,30,5,5);}if(career == 1){AutoAttribute(25,15,30,20,10);}if(career == 2){AutoAttribute(20,35,20,15,10);}if(career == 3){AutoAttribute(15,40,15,10,20);}if(career == 4){AutoAttribute(15,20,15,35,15);}if(career == 5){AutoAttribute(10,20,10,20,40);}}public void output(){System.out.println("----------------------------");System.out.println("力量\t\t\t"+this.strength);System.out.println("----------------------------");System.out.println("敏捷\t\t\t"+this.flexibility);System.out.println("----------------------------");System.out.println("体力\t\t\t"+this.physical);System.out.println("-----------------------------");System.out.println("智力\t\t\t"+this.intelligence);System.out.println("------------------------------");System.out.println("智慧\t\t\t"+this.wisdom);System.out.println("------------------------------");System.out.println("生命值\t\t\t"+this.HP);System.out.println("-------------------------------");System.out.println("魔法值\t\t\t"+this.MP);System.out.println("--------------------------------");}
}

RolePlaying

import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;public class RolePlaying {public static void main(String[] args) {boolean flag = true;Scanner sc = new Scanner(System.in);Role role = new Role();raceAndCareer rac = new raceAndCareer();CareerAttribute ca = new CareerAttribute();do{role.Setting();int race = rac.SelectRace();rac.SelectCareer(race);role.output();rac.output();ca.initialAttribute(rac.getCareer());ca.output();System.out.println("是否满意角色属性？（0/1）若不满意，则重新创建。");String str = sc.next();if("0".equals(str) || "1".equals(str)){break;}}while(flag);saveRoleInformation(role,rac,ca);System.out.println("角色信息已成功保存。");}public static void saveRoleInformation(Role role,raceAndCareer rac,CareerAttribute ca){try {FileWriter desFile = new FileWriter("E:\\程序设计方法学\\RPG游戏\\roles_information.txt",true);BufferedWriter out = new BufferedWriter(desFile);out.write("姓名\t\t\t"+role.getName());out.newLine();if(role.getGender()==0){out.write("性别\t\t\t"+"男性");}else{out.write("性别\t\t\t"+"女性");}out.newLine();switch(rac.getRace()){case 0:out.write("种族\t\t\t"+"人类");break;case 1:out.write("种族\t\t\t"+"精灵");break;case 2:out.write("种族\t\t\t"+"兽人");case 3:out.write("种族\t\t\t"+"矮人");break;case 4:out.write("种族\t\t\t"+"元素");break;default:break;}out.newLine();switch(rac.getCareer()){case 0:out.write("职业\t\t\t"+"狂战士");break;case 1:out.write("职业\t\t\t"+"圣骑士");break;case 2:out.write("职业\t\t\t"+"刺客");break;case 3:out.write("职业\t\t\t"+"猎手");break;case 4:out.write("职业\t\t\t"+"祭司");break;case 5:out.write("职业\t\t\t"+"巫师");break;default:break;}out.newLine();out.write("力量\t\t\t"+ca.getStrength());out.newLine();out.write("敏捷\t\t\t"+ca.getFlexibility());out.newLine();out.write("体力\t\t\t"+ca.getPhysical());out.newLine();out.write("智力\t\t\t"+ca.getIntelligence());out.newLine();out.write("智慧\t\t\t"+ca.getWisdom());out.newLine();out.write("生命值\t\t\t"+ca.getHP());out.newLine();out.write("魔法值\t\t\t"+ca.getMP());out.newLine();out.close();}catch(FileNotFoundException e){e.printStackTrace();}catch(IOException e){e.printStackTrace();}}
}

五、运行结果