VB.NET - Mutliple Inheritance

2 Mar 2006 3:51 PM

Alex C. Barberi

Okay say I was writing a game engine and it had two parts: The actual engine
and a map editor. Both the engine and the editor use the same classes to
store the information about the AI through a DLL so that I can use
Serialization. Now here's my problem: The engine's classes must also inherit
from a DirectX class so that they can be rendered onto the screen. Here is an
example:

(In the DLL)
Public Class myLevel
    Public myVar As Integer
End Class

(In the Engine)
Public Class myRenderingLevel
    Inherits myLevel
    Inherits DX9_RenderClass
End Class

VB.NET doesn't support multiple inheritance, so is there some way I can work
around this without having to copy myLevel's code to myRenderingLevel? Maybe
if I created extra classes...?

--
Alex C. Barberi
Chief Executive Officer
VisionForce
http://www.visionforceweb.com

2 Mar 2006 6:08 PM

tommaso.gastaldi

Hi Alex,

how about nesting a myLevel object within myRenderingLevel? I guess,
you will have an additional dot, but it could actually make clearer
when you are using the "myLevel" properties, methods, etc.:

(In the DLL)
Public Class myLevel
     Public myVar As Integer
    ...
End Class

(In the Engine)
Public Class myRenderingLevel
     Inherits DX9_RenderClass

     Public myLevel as myLevel

End Class

-tom

http://151.100.3.84/TechnicalPreview/

Alex C. Barberi ha scritto:

Show quote

> Okay say I was writing a game engine and it had two parts: The actual engine
> and a map editor. Both the engine and the editor use the same classes to
> store the information about the AI through a DLL so that I can use
> Serialization. Now here's my problem: The engine's classes must also inherit
> from a DirectX class so that they can be rendered onto the screen. Here is an
> example:
>
> (In the DLL)
> Public Class myLevel
>     Public myVar As Integer
> End Class
>
> (In the Engine)
> Public Class myRenderingLevel
>     Inherits myLevel
>     Inherits DX9_RenderClass
> End Class
>
> VB.NET doesn't support multiple inheritance, so is there some way I can work
> around this without having to copy myLevel's code to myRenderingLevel? Maybe
> if I created extra classes...?
>
> --
> Alex C. Barberi
> Chief Executive Officer
> VisionForce
> http://www.visionforceweb.com