Re: __mul()

[Christopher Eykamp <chris@...>]

On 3/20/2010 7:10 PM, Jonathan Castello wrote:
> On Sat, Mar 20, 2010 at 7:04 PM, Christopher Eykamp<chris@eykamp.com>  wrote:
>    
> > If this works:
> >
> >    newpt = bot:getLoc():__mul(2)
> >
> > Shouldn't this:
> >
> >    newpt = bot:getLoc() * 2
> >      
> Without knowing anything else about your situation, it looks like you
> set __mul on the table itself, rather than on its metatable.
>
> ~Jonathan
>    

I'm not sure that's correct:

  for k,v in pairs(getmetatable(bot:getLoc())) do
     print(k,v)
  end

Results in:

lenSquared      function: 01875200
__mul   function: 01877168
distanceTo      function: 01875330
__add   function: 01877198
distSquared     function: 01875298
len     function: 01875258
getxy   function: 018751C0
angleTo function: 018752D8
new     function: 018771C8

I know I probably haven't provided enough information, but I'm not 
really sure what would be helpful without just dumping an overwhelming 
amount of data into this message.

bot:getLoc returns a C++ class called a Point, which is translated to a 
Lua class by the same name by Lunar.  I can add methods to the Point 
metatable by altering a table called Point (created by Lunar).  So I 
added a method called __mul(), which works when called as shown in my 
original post, but not when used with the * operator.