Frontend and backend communication

[Pelle]

On Wed, 10 Aug 2011 10:35:46 +0200, Dainius (GreatEmerald)  
<pastas4 at gmail.com> wrote:

> I seem to have run into a problem with the function pointer method
> here. I have this code:
>
> arco.d:
>
>     struct FrontendFunctions {
>         void function(SoundTypes) Sound_Play;
>         void function() RedrawScreenFull;
>         void function(const char*, int) PrecacheCard;
>         void function(CardInfo, int) PlayCardAnimation;
>     }
>
> cards.d:
>
>     void InitLuaFunctions()
>     {
>         lua["Damage"] = (int Who, int Amount)
>         {
>             FrontendFunctions.Sound_Play(SoundTypes.Damage);
>         };
>     }
>
> Essentially I am trying to get Lua (via LuaD) to call a function in D
> that calls a frontend function. But when I compile the code, I get
> this: "cards.d(5): Error: 'this' is only defined in non-static member
> functions, not __dgliteral14". Why is this and what can I do about it?

FrontendFunctions frontendFunctions;

use frontendFunctions everywhere.

OR (this makes them global):

struct FrontendFunctions {
static:
     ...
}