Update jumping_dots.dart

[ukasz123]

Animate dots using single AnimationController

[ukasz123]

I believe using single AnimationController and SingleTickerProviderStateMixin may improve animation performance. What do you think?

[wal33d006]

The animation became cool, but my idea was to animate the next dot when the previous one is half way, therefore I used TickerProvider instead of SingleTicker provider. We can see what can be done to retain my idea and make the animations smoother. Thanks btw!

[ukasz123]

I think that effect can be achieved by playing with the _generateDotAnimation() function. You can adjust starting time of jump and fall animations there.

[wal33d006]

We need more than one animation controller for that I guess. Or maybe I am wrong. To give the wave a helix type animation, each of the previous dot needs to be animated before the next dot's animation is completed. If that can be done in _generateDotAnimation by any means, that would be great!

[ukasz123]

I hope I've done math right. Check jumping_dots.dart lines 84 and following. I added _jumpDelay constant that controls the relative delay between jumps. 1.0 - each dot jumps just after previous lands, 0.0 - all dots jumps together.