Bongo: Reluctant to move independent objects in sync

Bongo
1

I seem to have forgotten something essential: I try to move two objects to the same spot. They cannot be “chained” so that the trolley drags the “box” since the two will back away from their common point at different times.

Fig 1. Starting position:
image

Fig 2. Two objects racing to the same target position (they should move at exactly the same speed), and trolley “wins” (perhaps due to less friction in the wheels, or something… :slight_smile: ):
image

Fig 3. Target position reached. Only here the trolley and the box are eventually in sync:
image

Fig 4. Trolley backing away from the box, which is also why their respective animation keyframes must be separated:
image

How can I fix this? I have tried unchecking 3D Tweening, and also the “ease” properties for the two objects, but they still disobediently ignore any attempts to sync and instead arrogantly move in their own respective pace.

// Rolf

3

Rolf,
I guess setting Tweening to Linear will solve the issue.

image
image.png472×574 12 KB

Luc

PS If not, could you please send me the animated model?

4

Aha. I’ll try that!

Edit: Yup, that did the trick. Thanks!

// Rolf

5

Say Rolf,
Although it seem utterly logical to make the cargo child of the trolley, for animation purposes it’s maybe better to do it the other way around.
trolley with cargo.3dm (73.7 KB)
Hence the cargo can drag along the trolley which then in the second phase can move away from its parent. Of course things get complicated when you want to e.g. lower the box at its destination :thinking:.

Luc

6

I understand. Good idea! I didn’t think of that possibility.

// Rolf

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