Set Starting Tilt as global variable [answered]

Questions
1

Hi folks,

I’m pretty new to Codea and I’m trying to play around with the Tilt feature.

I try to set the starting Gravity.y as an global variable. becaus everybody is holding his iPad in another way.

My 1. idea was to

GravityYStart = Gravity.y

My 2. ideas was:

`GravityYStart = 0

function setup()
       GravityYStart = Gravity.y
end`

But it seems not to work as i thought it was.

Any ideas?

2

Gravity is not initialised when setup() is called – we’ll have to fix that. For now you can initialise it as follows:

--
function setup()
    GravityYStart = 0
end

function draw()
    if GravityYStart == 0 then
        GravityYStart = Gravity.y
    end
end

Just so you are aware, the Gravity vector is normalised to be relative to screen orientation. So if you are holding your iPad upside down, the gravity vector will still point “down” relative to the screen.

3

thanks very much. now it is working as intended.

I’m just playing around with the bit invader and changing the movement from touch to tilt. So it’s intended that when I’m holding