Bouncing ball deceleration... bug or what?

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    So I have this particle moving around using bouncing ball movement. It's set to speed of 1 and deceleration of 0. When I start the frame this works great. It slowly moves in a random direction forever.

    If I try to change the deceleration and speed with an event being triggered, then this also works. The particle speeds up and then decelerates to a stop.

    The issue is that when I try to then set the speed back to 1 and deceleration to 0, the particle starts moving again but then it decelerates and stops? It doesn't appear that I can touch the deceleration value and then set it back to 0 or something. Not sure why it's behaving like this.

    I would think that setting the speed back to 1 and deceleration back to 0 would mean it would move at the speed of 1 forever. But instead it moves for a short distance and then stops permanently.

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    It's something built into Fusion - the deceleration triggers even when set to 0. The only way to overcome it is to use an always event - for example

    Always == set object speed = 1
    or
    Object speed < 1 == set speed = 1
    or
    Flag 0 is on == set speed = 1

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    Hmmm nope... doesn't work either. Even in the debugger it shows the object's movement as Speed = 1 and Deceleration = 0 yet it's totally just sitting there stopped.

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    At a speed of 2 - I can keep it constant even if I stop and start it again - so you'd probably solve your problem by changing your speed to 2 or 3.

    When it picks up a real speed of 1 - the object does appear to be stopped and doesn't move. I noticed at the start the object will sometimes move - but sometimes it won't. The speed of 1 seems to be a problem for Fusion.

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    It appears that there is an issue with the bouncing ball movement. I found out that you can't really set a deceleration of 0, doing this is equivalent to setting a deceleration of 1. It's easily noticeable with the attached example.
    This explains why the object stops immediately when you set it at speed 1 and deceleration 0.

    The second issue (minor) is that the deceleration expression returns 0 unless you set it by action.

    I have noticed an issue with the bouncing ball movement as well, I tried to create a screensaver of an object bouncing randomly. After a few minutes, the bounce becomes predictable and it just bounces in the same two directions every time. This happens on every runtime, but I know I used the movement back in the Fusion 1 days without this issue.

    Bouncing Ball movement definitely needs some TLC.

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