问题描述

游戏中，角色Character可以有属性attack, defence，可以有装备weapen, armour，可以对属性造成影响，它们可以是类的属性；可以随时变成巨人gigantize，可以变狂暴furious，都可以对attack和defence形成影响，它们可以形成装饰。

解决方案

package io.shentuzhigang.demo.design;import org.junit.jupiter.api.Test;/** * @author ShenTuZhiGang * @version 1.0.0 * @date 2020-11-19 14:22 */public class DecoratorTEST{    @Test    public void t(){        Character person = new ConcreteCharacter();        Decorator decorator = new Gigantize(                new Person(person));        decorator.weapen();        decorator.armour();    }}interface Character {   public void weapen();   public void armour();}class ConcreteCharacter implements Character{    @Override    public void weapen() {        System.out.println("ConcreteCharacter+weapen");    }    @Override    public void armour() {        System.out.println("ConcreteCharacter+armour");    }}abstract class Decorator implements Character{    private Character character;    public Decorator(Character character){        this.character = character;    }    String attack;    String defence;    @Override    public void weapen() {        this.character.weapen();    }    @Override    public void armour() {        this.character.armour();    }}class Person extends Decorator {    public Person(Character character) {        super(character);    }    @Override    public void weapen() {        super.weapen();        System.out.println("Person+weapen");    }    @Override    public void armour() {        super.armour();        System.out.println("Person+armour");    }}class Gigantize extends Decorator {    public Gigantize(Character character) {        super(character);    }    public void furious(){        System.out.println("furious");    }    @Override    public void weapen() {        super.weapen();        System.out.println("Gigantize+weapen");    }    @Override    public void armour() {        super.armour();        System.out.println("Gigantize+armour");    }}

运行结果

参考文章

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