Re: creating a table in C

["Jeremy Darling" <jeremy.darling@...>]

Your script should be:
player = get_player()
print( "mojo is " .. player:get_mojo() )

This way, self is passed as the first argument to get_mojo.  With the . operator, you are not passing self, and would need to call it like this: 
player.get_mojo(player)

Basically its the way that functions are called from tables, : means send self reference, . means don't send I'll specify it.

On 2/1/07, Shea Martin <shea08@eastlink.ca> wrote:

int l_creat_player( lua_State* vm )
{
        lua_newtable( vm );

        int address = (int)&gSomePlayer;

        lua_pushstring( vm, "id" );
        lua_pushinteger( vm, address );
        lua_settable( vm, -3 );

        //Now I would like to add a function to this:

        lua_pushstring( vm, "get_mojo" );
        lua_pushcclosure( vm, l_player_get_mojo, 0 );
        lua_settable( vm, -3 );
        return 1;
}

I register the function as get_player;

My l_player_get_mojo() is like this:

int l_player_get_mojo( lua_State* vm )
{
        lua_getfield( vm, -1, "id" );
        int address = lua_tointeger( vm, -1 );
        Player* p = (Player*)address ;
        lua_pushnumber( vm, p->GetMojo() );
        return true;
}

My script is:

player = get_player()
print( "mojo is " .. player.get_mojo() )

The code dies on getting the "id" field, as the stack does not seem to
have the table on the top of the stack.

I think my problem is how I add the "member function" to the player table.

What am I missing here?

Thanks,
~S

-- 
Jeremy

"Help I suffer from the oxymoron Corporate Security."