Re: Question about pointer......

[Ben Sunshine-Hill <bsunshin@...>]

> I would like to ask a question.... for a MMO RPG wrote by C++ and
> using LUA as a script tools..... when a player access the script like
>
> the following..
>
> if (gold >= 5000)
>    Dec(gold, 5000)
>
> How do the server know which player will be decreased $5000 since
> in LUA doesn't know the player UIN......

Lua will know the player UIN if you tell it the player UIN. But I think your 
code would probably look more like the following:

if(myPlayer.gold >= 5000) then
    myPlayer.gold -= 5000
end

For a good discussion of sharing data between C/C++ and Lua, I suggest you 
check out the Wiki at http://lua-users.org . There's quite a lot of info 
there. In particular, pay attention to tolua and SWIG.

Ben