How to tween a big model?

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#1

I already know there’s post, but I don’t know how to correctly move a BIG model, like a train, should I loop it?
I want to make a train just go forward (for a metro effect)
Should I use prismatic constraint?
How do you recommend me do it

#2

Create a primary part to the model. And weld all other parts to it

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#3

Should I use weld constraint or weld?

#4

Weld constraint takes the pain of setting the C0 & C1 of a weld away, so definitely use it. All you have to do is just set a Part1 & Part0, done.

I recommend setting a part that you will be moving as the primary part then every other part will be weldconstrainted to that single primary part.

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#5

Should I use prismatic constraints?
or just tweening primary part

#6

Also, other question, games as Jailbreak, for trains, how do they do it?
Body velocitys? bc you can stand up on them.

#7

Prismatic constraints I am not sure what that is but if that is AlignOrientation or something like that, I just recommend tween instead.

Ideally, you can just test and whatever works best is your solution.

I can’t see Jailbreak code nor do I have any of their source code so I can’t tell how they do it. If you use body forces to move objects, they have to be unanchored though compared to tweening that works equally for unanchored & anchored. I don’t think prismatic constraints require unanchored parts though but I never use them so I can’t tell.