c# – 无继承地共享属性

我正在使用引擎Unity,几乎所有脚本的基类都必须从MonoBehaviour派生.我创建了自己的包装类,它来自MonoBehaviour,名为CMonoBehaviour,它包含了我几乎无处不在的一些辅助函数.但是现在我面临的问题是,有时我不想从MonoBehavuour派生出来但是ThirtPartyLibraryWrapperClass(类,也是从MonoBehaviour派生出来的,但也实现了一些附加的功能 – 就像我的包装一样).这是我想要存档的示例.

编辑：我忘了提到ThirtPartyLibraryWrapperClass是用dll打包的,这意味着我无法以任何方式修改它

 // This is what I have
public class CMonoBehavour : MonoBehaviour
{
    public int SomeHelperProperty1 { get; private set; }
    public int SomeHelperProperty2 { get; private set; }
    public int SomeHelperProperty3 { get; private set; }
    public int SomeHelperProperty4 { get; private set; }
}

public class ThirtPartyLibraryWrapperClass : MonoBehaviour
{
    public int SomeHelperProperty5 { get; private set; }
    public int SomeHelperProperty6 { get; private set; }
}

// My problem :

public class ExampleUseage1 : CMonoBehavour
{
    // here I have to copypaste content of ThirtPartyLibraryWrapperClass because I cust cannot derive from two classes
}

public class ExampleUseage2 : ThirtPartyLibraryWrapperClass
{
    // here I have to copypaste content of CMonoBehavour because I cust cannot derive from two classes
}

解决方法:

您可能想重新考虑您的架构.
您似乎过度依赖继承来提供功能.

有很多方法可以重构您的方法,例如：

>使用扩展方法提供功能(界面扩展方法是个好主意)
>使用成分
> use interfaces composition =>您可以将组合包装在重新实现的属性中,这些属性只会将调用传递给内部对象.

复合/包装解决方案：

    public class CMonoBehavour : MonoBehaviour
    {
        public int SomeHelperProperty1 { get; private set; }
        public int SomeHelperProperty2 { get; private set; }
        public int SomeHelperProperty3 { get; private set; }
        public int SomeHelperProperty4 { get; private set; }
    }

    public class ThirtPartyLibraryWrapperClass : MonoBehaviour
    {
        public int SomeHelperProperty5 { get; private set; }
        public int SomeHelperProperty6 { get; private set; }
    }

    //COMPOSITE SOLUTION

    public class CompositeMonoBehaviour : CMonoBehaviour
    {
        private ThirtPartyLibraryWrapperClass _thirdParty;

        public int SomeHelperProperty5 { get{ return _thirdParty.SomeHelperProperty5; } }
        public int SomeHelperProperty6 { get{ return _thirdParty.SomeHelperProperty6; } }
    }

    public class ExampleUseage1 : CompositeMonoBehaviour
    {
          //you have all your properties, great news!
    }

    public class ExampleUseage2 : CompositeMonoBehaviour
    {
        //you have all your properties, great news!
    }

请记住,Unity的实体组件系统是GameObject设计的核心.过度继承是：

>一般的糟糕设计
>打击框架,这是一种徒劳的做法

原文地址：https://codeday.me/bug/20190627/1307386.html