call lua callback with custom data as function argument

Question

I'm just looking for solution how to pass object from C to lua callback as function argument, is it even possible? I cannot find any referece. just trying something like this:

luabind::call_function(State, "Callback_name", object);

but luabind is not a option in this case because it is obsolete and additionally some features just don't work that's probably because of boost as I read but don't know exactly, thats why I switched to toLua++ but still cannot find any solution for it. I'm just trying to achieve to access data from C in lua callback ex:

function LUA_Callback(object1, object2)
    print(object1.name)
    print(object2.size)
end

Is there any way to solve it or library(without boost) to do this?

Mud · Accepted Answer · 2014-06-13 06:31:44Z

1

That depends on what you mean by "push object". It's trivial to push numbers, strings, C functions, tables, etc. -- in other words, Lua objects -- using API routines like lua_pushstring, lua_pushnumber, etc.

If you're talking about pushing C++ objects, you need to create and push userdata. If you want them to behave like objects from Lua, then you'll need the appropriate metatable/methods.

answered Jun 13, 2014 at 6:31

Mud

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1 Comment

user2887378 Over a year ago

Yeah, I want to push C++ objects and I want to to behave them like objects in Lua too, could you give me any reference about that? Thanks.

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