converting C to Lingo

Question

does anyone here knows how to convert this expression below to lingo:

for(var channel=1;channel<30;channel+=3)

there is already sample below on how to use for statement to repeat with, my problem is i dont know how to use channel+=3 in lingo statement since they only provided channel++.

//Lingo 
on puppetize 
    repeat with channel = 1 to 30 
    _movie.puppetSprite(channel, TRUE) 
    end repeat 
end puppetize 

// Javascript 
function puppetize() 
{ 
    for(var channel=1;channel<30;channel++) 
    { 
    _movie.puppetSprite(channel, true); 
    } 
}

hope you could help me with this. thanks.

Answer 1

As the Lingo reference says about the repeat keyword having no incrementing syntax, you are indeed adding 1 to channel yourself. But did you try using a more basic syntax c = c + 1 instead of c++ or c += 1? Also, in Lingo, you would be adding only 2, because the repeat loop is already adding 1 on it's own. Please see below.

//Lingo 
on puppetize 
    repeat with channel = 1 to 30 
      _movie.puppetSprite(channel, TRUE) 
      channel = channel + 2   <---------------------my change here.
    end repeat 
end puppetize