Re: native converter questions

What's wrong with this?

v1 = Vec2(1,2)

 

All you have to do is to bind a constructor of type (int, int).
 
> Date: Mon, 17 Aug 2009 11:49:50 +0200
> From: [email protected]
> To: [email protected]
> Subject: [luabind] native converter questions
> 
> Hi,
> 
> Suppose you have a class vec2, and a function do_stuff(const Vec2&).
> I'd like to have native converters between vec2 and lua tables, so I
> could write for example :
> 
> v1=Vec2{1,2}
> do_stuff{x,y}
> 
> I specialized luabind::default_converter<Vec2> to achieve this, which 
> worked, except that I can not use my vec2 bindings anymore, e.g :
> 
> =v1
> error calling 'print' (No matching overload found, candidates:
> void __tostring(lua_State*,Vec2 const&))
> =v1.x
> No matching overload found, candidates:
> custom [f] <unknown>(Vec2 const&)
> 
> (both worked before I wrote the native converter). Does anyone see what
> I did wrong? I can give more details if needed.
> 
> As an alternative, I thought of writing "light wrappers" instead of
> custom converters, but this lead me to 2 problems:
> 
> - I have a couple of classes like vec2 above, and a lot of functions
> that take them. I'd need to write wrapper functions (taking
> lua tables) by-hand, for all of them. That's going to be painfull to
> write, review and maintain.
> 
> - I could not find a way to simulate a custom constructor allowing to
> write e.g v1=Vec2{x,y}
> (without touching the original c++ api that is). The closest I got
> to was adding pseudo class-methods acting like factories:
> v1=Vec2.New{x,y}
> 
> Is there a better way? Thanks!
> 
> - David
> 
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