CODEWITHSUNDEEP
lua
Magicaxis
Magicaxis

Reputation: 381

How Do I Invert The Y Axis Motion Of This?

I'm making a little game for iPhone that involves whistling. The phone hears the frequency of your whistle, and sets the position of a sprite on the screen accordingly. Here is the code:

if frequency > 1000 then
    soundbar.y = (frequency-1020)/10+30
end

This makes the bar move between 30 and higher on the y axis, with the highest whistling register being at about y 400, which is fine. There is only one problem. The higher you whistle, the further down the bar goes. Is there any way I can edit my formula, so that the bar starts at 208, and as the pitch increases, the bar rises?

Thanks :) This has had me stumped for a while!

Upvotes: 1

Views: 158

Answers (1)

Amber
Amber

Reputation: 526493

208 - ((frequency-1020)/10+30)

which simplifies to...

178 - ((frequency-1020)/10)

or even...

280 - (frequency/10)

Upvotes: 2

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