Re: Argument not being accepted by function

[Christian W. <cwa...@gm...>]

> I'm having a bit of difficulty writing up a function to simplify image sequences and make them playable by one line: playVid(stairDoorOpenLeft, 20, 4, 333, 400, 15)
>   The first argument specifies the folder the images are in, then the number of frames, then the cube face, the x/y coords, and the framerate. Trouble is when I run it it tells me this : attempt to concatenate local folder, a nil value

The function looks OK in that regard, so if the above is your actual call, then probably the variable stairDoorOpenLeft actually has value nil - have you checked that? Or possibly you didn't mean it to be a variable, but a string literal, i.e. you forgot the quotation marks?

 -Christian

> function playVid(folder, frameCnt, face, locX, locY, framerate)
> 
> local animpos = 0
> local vid = patch { face = face, x = locX, y = locY, image =  " " .. folder .. "/" .. animpos .. ".jpg"  }
> 
> 
>   pipmak.schedule(
>     framerate,
>     function(now, last)
>       animpos = animpos + 1
>       if animpos > frameCnt then animpos = 0 end
>       vid:setimage ( " " .. folder .. "/" .. animpos .. ".jpg" ) 
>       return framerate
>     end
>   )
> end