在OOP中操作Java对象

我试图在Java中操作对象。为了更好地说明，我有一个称为Creature的超类和两个名为（Dragon和Warrior）的子类。我为龙和战士彼此战斗创建了两个对象。如何设置对一个对象造成伤害的攻击方法，并使用该数字将其从第二个对象的生命值中减去。

请注意，战士和龙都是子类。

public class Creature {

    private int health = 50;
    private int attack;
    private int level = 1;
    private String name;
    private Creature random;
    private Creature random2;

    public String getName() {
        return name;
    }

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

    public int getHealth() {
        if(health >= 3000)
        {
            health = 3000;
        }
        if(health <= 0)
        {
            health = 0;
        }
        return health;
    }

    public void setHealth(int health) {
        this.health = health < 0 ? 0 : health;
    }

    public int getAttack() {
        Random generator = new Random();
        attack = generator.nextInt(10) * level + 1;
        return attack;
    }

    public void setAttack(int attack) {
        this.attack = attack;
    }

    public int getLevel() {
        if(level >= 60)
        {
            level = 60;
        }
        return level;
    }

    public void setLevel(int level){
        this.level = level;   
    }

    public boolean isAlive() {
        if(getHealth() <= 0)
        {
            return false;
        }
        return true;
    }







    public String getWelcome()
    {
        String welcome = "Hello and welcome to Dragonslayer!";
        return welcome;
    }

    public String getStab()
    {
        String stab = "You choose to stab the dragon and dealt " + getAttack() + " damage. The dragon now has " + getHealth() + " health remaining.";
        return stab;
    }

    public String getSlash()
    {
        String slash = "You choose to slash the dragon and dealt " + getAttack() + " damage. The dragon now has " + getHealth() + " health remaining.";
        return slash;
    }

    public String getCut()
    {
        String cut = "You choose to cut the dragon and dealt " + getAttack() + " damage. The dragon now has " + getHealth() + " health remaining.";
        return cut;
    }  



    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("You come across the dragon and you have two options.  Do you run or fight? ");


        Creature kirsta = new Dragon();
        kirsta.setHealth(50);

        Creature brenton = new Warrior();
        brenton.setHealth(50);

        while(in.hasNextLine())
        {
            switch(in.nextLine())
            {
                case "run":
                    System.out.println("I am so sorry, you could not outrun the dragon, you have been killed!");
                    break;
                case "fight":
                    while(kirsta.isAlive() && brenton.isAlive())
                    {
                        System.out.println("Do you want to stab, slash, or cut the dragon? ");
                        switch(in.nextLine())
                        {
                            case "stab":
                                System.out.println("You choose to stab the dragon and dealt " + brenton.getAttack() + " damage. The dragon now has " + kirsta.getHealth() + " health remaining.");
                                break;
                            case "slash":
                                System.out.println("You choose to slash the dragon and dealt " + brenton.getAttack() + " damage. The dragon now has " + kirsta.getHealth() + " health remaining.");
                                break;
                            case "cut":
                                System.out.println("You choose to cut the dragon and dealt " + brenton.getAttack() + " damage. The dragon now has " + kirsta.getHealth() + " health remaining.");
                                break;
                            default:
                                System.out.println("I am sorry that is not valid, try again. ");
                        }
                    }
                    break;
                default:
                    System.out.println("I am sorry that is not a valid choice. ");
                    break;
            }//end of switch
            if(brenton.isAlive() == false && kirsta.isAlive() == false)
            {
                System.out.println("It is a horrid day today, as both you and the dragon have fallen.");
            }
            else if(brenton.isAlive() == true && kirsta.isAlive() == false)
            {
                System.out.println("Congratulations you have killed the dragon, and survived!");
            }
            else if(brenton.isAlive() == false && kirsta.isAlive() == true)
            {
                System.out.println("You have sadly fallen to the dragon, better luck next time.");
            }
            else
            {
                System.out.println("SOMETHING WENT WRONG!!!");
            }
            break;
        }//end of while loop in.hasNextLine().
    }//end of main
}//end of class