Currently I am designing a vehicle system in which vehicles are constrained along the Y axis, and do not move up or down. I am using a PlaneConstraint to hold the root part of the vehicle a set distance above the ground to achieve this. However, the plane constraint does not limit the root part from rotating. I am looking for a solution to prevent the root part of the vehicle from rotating in the X or Z axis, but allowing for the root part to “steer” along the Y axis of rotation. I have tried using AlignOrientation constraints, but these seem to be limited. Is this possible with physics movers, or do I need to script the part’s rotation?
The hinge constraint does exactly this.
That said, the cylindrical constraint is practically made for vehicle suspension systems and I’d recommend giving those a try. They combine the rotation motion you need for steering and, with LimitsEnabled set to true, I suspect you’ll also be able to lock the constraint from going up and down.
So, from what i see you are trying to use constraints to keep an assembly upright?
Something like this? Also what limitations are you noticing with alignorientation? It seems to work fine for me.
Update: the simplest way to do this is to create three plane constraints on three corners of the root part
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