EBU4201（2021/22) Lab5 Q1

 附：TestingMonster代码段

import java.util.*;


public class TestingMonsters {
  public static void main(String[] args) {
    ArrayList monsters = new ArrayList();

    monsters.add(new Monster("Tom"));
    monsters.add(new Monster("George"));

    monsters.add(new Dragon("Smaug"));
    monsters.add(new Dragon("Jabosh"));

    monsters.add(new Troll("Salomon"));
    monsters.add(new Troll("Bender"));

    int damageDone = 0;
    while (damageDone < 100) {
      for (Monster m : monsters) {
        m.move((int)(Math.random()*4) + 1);
 damageDone += m.attack();
      }
    }
  }
}

java程序

代码1：Monster.java

//import java.lang.runtime.SwitchBootstraps;

public class Monster {
    public String name;

    public Monster(String name) {
        this.name = name;
    }

    public int attack() {
        int x = (int) (Math.random() * 5 + 1);
        System.out.println(this.name + ", of type "
                + getClass() + ", attacks generically: "
                + x + " points damage caused. ");
        return x;
    }

    public void move(int direction) {
        switch(direction) {
            case 1: {
                System.out.println(this.name +" is moving 1 step North. ");
                break;
            }
            case 2:{
                System.out.println(this.name +" is moving 1 step East. ");
                break;
            }
            case 3:{
                System.out.println(this.name +" is moving 1 step South. ");
                break;
            }
            default:
                System.out.println(this.name +" is moving 1 step West. ");
                break;
        }
    }
}

代码2：Dragon.java

public class Dragon extends Monster{
    public Dragon(String name){
        super(name);
        this.name = name;
    }

    @Override
    public int attack() {
        int probability = (int)(Math.random()*10 + 1);
        int x;
        if(probability <= 3) {
            x = (int) (Math.random()*50 + 1);
            System.out.println(this.name + ", of type "+ getClass()
            + ", attacks bby breathing fire: " + x
            + " points damage caused. ");
        }
        else {
            x = super.attack();
        }
        return x;
    }
}

代码3：Troll.java

public class Troll extends Monster{
    public Troll(String name){
        super(name);
        if(name.equals("Saul") || name.equals("Salomon")){
            System.out.println("This name is not available." );
            this.name = "Detritus";
        }
    }
    public String name(){
        return this.name;
    }
}

代码4：TestingMonster.java

import java.util.*;
public class TestingMonster {
    public static void main(String[] args){
        ArrayList monsters = new ArrayList();

        monsters.add(new Monster("Tom"));
        monsters.add(new Monster("George"));

        monsters.add(new Dragon("Smaug"));
        monsters.add(new Dragon("Jabosh"));

        monsters.add(new Troll("Salomon"));
        monsters.add(new Troll("Bender"));

        int damageDone = 0;
        while (damageDone < 100) {
            for (Monster m : monsters) {
                m.move((int)(Math.random()*4) + 1);
                damageDone += m.attack();
            }
        }
    }
}