Single sliding groove along the entire polygon

[pavanteja295]

Hey guys!

I am trying to use a GrooveJoint for my use case. My use case is as follows:

I have two bodies - Platform (a polygon or more simply a rectangle) , BoxP . I want to make a groove throughout the polygon surface of Platform and restrict the movement of BoxP due to any forces in the simuation to move only along the groove. Is this possible?

I took a look at GrooveJoint. Unfortunately, pymunk.constraints.GrooveJoint only supports linear slides. Is there a way to achieve this with Pymunk?

[aatle]

Perhaps you could try to use a single GrooveJoint, but after every update, you calculate Platform's closest edge to BoxP's anchor and set the joint's groove_a and groove_b to match that edge.
Theoretically, at the corners, BoxP could be pushed in enough for the groove to flip, depending on the direction of the force. You could try adjusting error_bias to tune things further.

[viblo]

I have to admit Im a bit confused by the groove joint... Anyway: I guess you dont want to constrain any rotation? Else you could use a GearJoint together with the groove I think. If I understand your question properly..