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  1. import java.util.Random;
  2.  
  3. public class Main {
  4.   public static void main(String[] args) {
  5.     Hero hero = new Hero();
  6.     Dragon dragon = new Dragon();
  7.     hero.receiveAttack(dragon);
  8.     hero.showHp();
  9.   }
  10. }
  11.  
  12. // ③
  13. interface Creature {
  14.   void receiveAttack(Creature creature);
  15. }
  16.  
  17. interface Human extends Creature {
  18.   void receiveAttack(Monster m, int damage);
  19. }
  20.  
  21. // ②
  22. abstract class Character implements Human {
  23.   String name;
  24.   int hp;
  25.   int maxHp;
  26.   int mp;
  27.   int maxMp;
  28.   static Random random = new Random();
  29.  
  30.   public void showHp() {
  31.     System.out.println(this.name + "の現在HPは" + this.hp + "だ");
  32.   }
  33.  
  34.   @Override
  35.   public void receiveAttack(Creature creature) {
  36.     if(creature instanceof Dragon &&
  37.     random.nextDouble()<1.0/3.0 
  38.     //↑「1.0/3.0」実数で計算しないと、整数で計算されてバグになる。
  39.     ){
  40.       this.hp = 0;
  41.     }
  42.   }
  43.  
  44.   @Override
  45.   public void receiveAttack(Monster m, int damage) {
  46.     receiveAttack(m);
  47.   }
  48. }
  49.  
  50. // ①
  51. class Hero extends Character {
  52.   Sword sword;
  53.   Shield shield;
  54.  
  55.   public Hero() {
  56.     this.name = "NoName";
  57.     this.hp = 100;
  58.     this.maxHp = 100;
  59.     this.mp = 0;
  60.     this.maxMp = 0;
  61.     this.sword = new Sword();
  62.     this.shield = new Shield();
  63.   }
  64.  
  65.   public Hero(String name, int hp, int mp, String sName, int sDamage, String shName, int shDefense) {
  66.     this.name = name;
  67.     this.hp = hp;
  68.     this.maxHp = hp;
  69.     this.mp = mp;
  70.     this.maxMp = mp;
  71.     this.sword = new Sword(sName, sDamage);
  72.     this.shield = new Shield(shName, shDefense);
  73.   }
  74. }
  75.  
  76. // ⑧
  77. abstract class Monster implements Creature {
  78.   String name;
  79.   String num;
  80.   int hp;
  81.   int damage;
  82.  
  83.   public void run() {
  84.     System.out.println(this.nameNum() + "は逃げ出した");
  85.   }
  86.  
  87.   public String nameNum() {
  88.     return (this.name + this.num);
  89.   }
  90. }
  91.  
  92. // ⑨
  93. class Dragon extends Monster {
  94.   public Dragon() {
  95.     this.name = "";
  96.     this.num = "A";
  97.     this.hp = 500;
  98.     this.damage = 100;
  99.   }
  100.  
  101.   public Dragon(String num) {
  102.     this.name = "";
  103.     this.num = num;
  104.     this.hp = 500;
  105.     this.damage = 100;
  106.   }
  107.  
  108.   @Override
  109.   public void receiveAttack(Creature creature) {
  110.   }
  111. }
  112.  
  113. // ⑤
  114. abstract class Weapon {
  115.   String type;
  116.   String name;
  117.   int damage;
  118. }
  119.  
  120. // ④
  121. class Sword extends Weapon {
  122.   final String type = "";
  123.  
  124.   public Sword() {
  125.     this.name = "";
  126.     this.damage = 0;
  127.   }
  128.  
  129.   public Sword(String name, int damage) {
  130.     this.name = name;
  131.     this.damage = damage;
  132.   }
  133. }
  134.  
  135. // ⑦
  136. abstract class Guard {
  137.   String type;
  138.   String name;
  139.   int defense;
  140. }
  141.  
  142. // ⑥
  143. class Shield extends Guard {
  144.   final String type = "";
  145.  
  146.   public Shield() {
  147.     this.name = "";
  148.     this.defense = 0;
  149.   }
  150.  
  151.   public Shield(String name, int defense) {
  152.     this.name = name;
  153.     this.defense = defense;
  154.   }
  155. }
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https://ideone.com/6PDW8U
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Text (text 6.10)
created:
1 year ago
visibility:
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