Re: call_function causes my program to crash

As far as I can understand from the source
(luabind/detail/call_function.hpp, lines 349-350)
luabind::call_function<...>(lua_State*, const char*, ...) only works
with functions at global scope. call_function would have to do rather
sophisticated parsing to reach inner "scopes" - sure,
"CNPC_Nurse.Update" doesn't look very complex, but if that one works,
then "Nurses['Jessie'].Arms.Left:Update" should also work, and parsing
the latter is not trivial. But the parser to do everything for you is
there, and you can invoke it - just call

luaL_dostring(L, "CNPC_Nurse:Update()"); // luaL_dostring is a macro
from the Lua aux library, not luabind

It gets more complex if you want to get return values though. Probably
better option would be something along the lines:

luabind::object self = luabind::globals(L)["CNPC_Nurse"];
luabind::object func = self["Update"];
luabind::call_function(L, func, self);

(I haven't compiled the above code, but you get the idea)

Hope this helps,
Ilia


On Mon, Aug 10, 2009 at 3:08 PM, Secretive Loon<[email protected]> wrote:
> No, he tried it and it didn't work (we're on the same dev team). Perhaps
> it's still not implemented correctly?:
> // c++ call
> luabind::call_function<void>( L ), "CNPC_Nurse.Update", this );
> -- Lua function
> function CNPC_Nurse.Update( self )
> Msg( "\nIn Nurse.Update" )
> end
> I checked through every Google result for call_function (13 pages) and
> didn't find a single one using scope the way I'm trying. Has LuaBind just
> not been designed with the capability?
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