body_test_motion causes crash when used with a Rigidbody and Bullet

[mrezai]

Godot version

3.4-beta3

System information

OS: ubuntu 18.04

Issue description

body_test_motion exposed in this PR: #50103
It works correctly with Godot physics for both KinematicBody and RigidBody, it doesn't crash and result properties like collision_safe_fraction will be updated after calling body_test_motion:

but when calling body_test_motion with Bullet and KinematicBody, the result properties are zero and calling it with RigidBody will cause a crash

Steps to reproduce

Run the attached project

Minimal reproduction project

Test-body_test_motion.zip

[mrezai]

@Calinou I think this issue should be added to 3.4 milestone too. I found it on 3.4-beta3

[akien-mga]

@mrezai There can only be one milestone on GitHub. The bug is likely valid in both master and 3.x and we usually use the most recent affected branch as milestone in this case. But the bug will be fixed in both branches.

Also, nice to see you on Godot's GitHub again after all these years ;)

[mrezai]

@mrezai There can only be one milestone on GitHub. The bug is likely valid in both master and 3.x and we usually use the most recent affected branch as milestone in this case. But the bug will be fixed in both branches.

Also, nice to see you on Godot's GitHub again after all these years ;)

👍
Thanks, nice is what you and other contributors done in these years. I'm still waiting for Godot :)