继承、setter 和 getter（游戏 Class 输出）

Question

我应该如何先降低它的护甲然后再降低生命值？我不想打印护甲的负数，我想打印如果护甲为0，健康应该是下一个减少的。

为了测试中的实例Class，我使用巫师并向骑士施放法术3次火球。因为骑士应该先减护甲，护甲到0后生命值才减。

输出：

Wizard use a 'Fireball' and will deal 24 damage to Knight
Knight has now 6 armor left, and 80 health left.

Wizard use a 'Fireball' and will deal 24 damage to Knight
Knight has now -18 armor left, and 80 health left.

Wizard use a 'Fireball' and will deal 24 damage to Knight
Knight has now -18 armor left, and 56 health left.

正如您在第二个打印中看到的那样，盔甲得到 -18，我希望打印 0 和 62 剩余生命值。因为法师造成 24 点伤害

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这是Parent class:

    public class Human {
    
   String name;
   int strength;
   int stealth;
   int intelligence;
   int health;

   public Human() {
       name = "Human";
       strength=3;
       stealth=3;
       intelligence=3;
       health=100;
   }
   
  
   public int getStrength() 
   {
       return strength;
   }

   public int getStealth() 
   {
       return stealth;
   }

   public int getIntelligence() 
   {
       return intelligence;
   }

   public int getHealth() 
   {
       return health;
   }

  
   public String getName()
   {
       return name;
   }


   public void setName(String name) 
   {
    this.name = name;
   }


   public void setStrength(int strength) 
   {
    this.strength = strength;
   }


   public void setStealth(int stealth) 
   {
    this.stealth = stealth;
   }


   public void setIntelligence(int intelligence)
   {
    this.intelligence = intelligence;
   }


   public void setHealth(int health) 
   {
    this.health = health;
   }

   public void attack(Human human)
   {
       int damagetaken = this.getStrength();
        human.health = human.health - this.getStrength();
        System.out.println(this.getName()+ " attack " + human.getName() + " and will deal " +damagetaken +" damage.");
        System.out.println(human.getName()+ " has now "+human.getHealth()+" health left");
        System.out.println();
   }


}

Child Class 骑士：

public class Knight extends Human
{
   int armor=30;
   
   public Knight() {
       this.name="Knight";
       this.health=80;  
   }
   public void Reinforce(){
       this.armor=this.armor+5;
       System.out.println(this.getName()+ " use a 'Reinforce' and will increase its armor to 5 ");
       System.out.println(this.getName()+ " has now "+ this.armor +" armor left.");
       System.out.println();

   }
   public void HolyStrike(Human human)
   {   
       int damagetaken = (int)(human.health-10-(.20*this.armor));
       human.health= human.getHealth() - damagetaken;
       System.out.println(this.getName()+ " use a 'Holy Strike' and will deal "+damagetaken+ " damage to "+ human.getName());
       System.out.println(human.getName()+" has now " +human.getHealth()+" health left.");
       System.out.println();
   }
}

Child Class 向导：

public class Wizard extends Human{

   public Wizard() 
   {
       this.name="Wizard";
       this.health=50;
       this.intelligence=8;  
   }
   public void heal(Human human)
   {
       int healtake = this.getIntelligence();
       human.health=human.health+this.intelligence;
       System.out.println(this.getName()+" use a 'Heal' to " + human.getName() + " he/she will receive " + healtake + " additional health to his/her HP");
       System.out.println(human.getName()+" has now "+ human.getHealth()+" health left.");
       System.out.println();
   }
   public void fireball(Human human)
   {
       int damagetaken = this.intelligence*3;
       human.health= human.health-(this.intelligence*3);
       System.out.println(this.getName()+ " use a 'Fireball' and will deal "+damagetaken+ " damage to "+ human.getName());
       System.out.println(human.getName()+" has now " +human.getHealth()+" health left.");
       System.out.println();
   }
   
   public void fireball(Knight human)
   {
       
       if (human.armor > 1)
       {
           int damagetaken = this.intelligence*3;
           human.armor= human.armor-(this.intelligence*3);
           System.out.println(this.getName()+ " use a 'Fireball' and will deal "+damagetaken+ " damage to "+ human.getName());
           System.out.println(human.getName()+" has now " +human.armor+" armor left, and "+human.getHealth()+" health left.");
           System.out.println();
       }
       
       else
       {
           int damagetaken = this.intelligence*3;
           human.health= human.health-(this.intelligence*3);
           System.out.println(this.getName()+ " use a 'Fireball' and will deal "+damagetaken+ " damage to "+ human.getName());
           System.out.println(human.getName()+" has now " +human.armor+" armor left, and "+human.getHealth()+" health left.");
           System.out.println();
       }
   }
   
}

测试Class：

public class HumanTest {
   public static void main(String Args[]){
       
       Human h1 = new Human();
       Wizard w1=  new Wizard();
       Ninja n1 = new Ninja();
       Samurai s1 = new Samurai();
       Knight k1 = new Knight();
       
   
      w1.fireball(k1);
      w1.fireball(k1);
      w1.fireball(k1);
      w1.fireball(k1);
      w1.fireball(k1);
      w1.fireball(k1);
   }
}

你能帮我解决这个问题吗？

源码可以问我

Answer 1

您正在检查 armor 是否大于 1 (human.armor > 1)。您必须尽可能减少护甲，然后 health.

public void fireball(Knight knight) { //I've renamed the variable as knight
    int damageToTake = this.intelligence * 3;
    if (knight.armor >= damageToTake) {
        knight.armor -= damageToTake;
    } else {
        int remaining = damageToTake - knight.armor;
        knight.armor = 0;
        // reduce remaining from health
        knight.health -= remaining;
    }
    System.out.println(this.getName()+ " use a 'Fireball' and will deal "+damagetaken+ " damage to "+ knight.getName());
    System.out.println(knight.getName()+" has now " +knight.armor+" armor left, and "+knight.getHealth()+" health left.");
    System.out.println();

}

我想当 health 不够时，您也必须处理。我会把它留给你。

Answer 2

您应该添加额外的检查：

如果护甲小于0
然后生命+=护甲
然后将护甲设置为0。

示例护甲 = -10，健康 = 30，然后健康 = 20，护甲 = 0。其他算法也是可能的。

作为附加说明，具有对骑士造成伤害的方法和对人类造成伤害的方法是糟糕的设计。如果你有更多 class 个带盔甲的，你会为每个人制作额外的方法吗？

例如，最好让所有人都有盔甲，但默认值为 0，并将正确的盔甲分配给扩展 classes。

或者更好的是有一个处理护甲和健康的接口，你的 classes 应该实现它，并且伤害处理方法应该接受它。

或者最好有一个方法来接受每个 class 造成的伤害。像这样 class 本身将根据不同的修饰符处理剩余的生命值，你的情况下是盔甲，但你可以添加更多。你真的不应该在向导中处理骑士的盔甲和生命值 class。

继承、setter 和 getter（游戏 Class 输出）

Inheritance, setters and getters (Game Class Output)

java

inheritance