trajectory

When motion path animations were introduced in Storyline 2, I did a similar interaction, see the 4th example here (because of the conversion to SL360, the formatting is a bit off, but it still illustrates the concept) : https://dev.keypointlearn.com/xcl74_SL360/Animations/story.html. The four navigation buttons control variables, based on their values I could determine the ball's position. And based on the position, I enabled/disabled the applicable nav buttons.