PinJoint2D - Rotation very stiff about godot-rapier-2d HOT 10 CLOSED

Ok, its related to the joint motor. Even if I don't set up motor, the motor is set to 0. However, in this case, rapier tries to stop the object.

The fix will be in case of motor being 0, to set the motor force as well to 0. If not, will set the motor force to Real::MAX for now.

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I removed the "addons" and "samples" folders to keep it small. (I had both Box2D and Rapier2D as addons in the demo project, both in the current Git version).

PinJoint2DAngLimit.zip

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Unfortunately, that doesn't work for me. Maybe I just got it wrong. I have done the following in the inspector for all RigidBody2Ds: entered a 1 under RigidBody2D > Mass Distribution > Inertia. Nothing else.
This causes the ragdoll to fly apart after it hits the ground. The individual limbs and the torso move away from each other and whirl around each other without settling down again.

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Free rotation with angle range? I am unsure what the ask is. You can disable angle range and then it should have free rotation, no?

Also, have you tried setting for angle range also a lower and upper range? Would that allow free rotation?

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I left out the angle limits to show what I mean.
In the first video (Godot Physics), the limbs can rotate freely. In the second (Rapier2D), they appear to be rusted in place.

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Interesting, can you upload the demo project you have in that video?

And/or lmk what options you enabled on the pinjoint or what flags(eg. disable collision between bodies, lock rotation, etc.)

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This is really strange, I don't think I noticed until now that the joints work like this. I have tried in the past working with joints and it seemed to have worked well.

I am pretty sure maybe something changed, because I have a softbody addon that uses this exact feature, and the rotation works there. Hm..

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Ok, after further investigation, it seems the inertia is wrong on shapes.
If I set inertia to custom and set inertia to 1, everything works(in rapier).
If I leave it to auto, it doesn't.

I am assuming it's related to my change where I divide everything by 100 to go from pixel to meters. And I don't divide inertia.

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So until this is fixed, as a workaround, you can set inertia to custom and set it to 1.

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Right, if you set custom inertia it also sets the custom center to 0,0.
However i saw it shapes are not centred to 0,0
If you center the shape and move the body, it should work.
I will have a fix though soon, as this is quite a basic functionality.

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