Resolved Core Physics2D Changed

EDIT: I am currently testing this on the 2021.x cycle because actually happened in that cycle. I will probably be deleting this thread and moving it to the 2D forums once I figure out what version it broke on.

EDIT2: This is possibly the issue as 20201.1.13 is the version the hingejoint2D was worked on.

https://issuetracker.unity3d.com/is...2.1757012036.1626135953-2096704196.1625234267


Hi,

I hope this is not a major issue and I am missing something super simple, but it seems that the core of the Physics2D system has somehow changed with the beta.

I have a character that, when they hit a rope, I add force to each of the rope's link's rigidbody2D.

Code (CSharp):

1. // add force to each rb starting from bottom and fall off as you move up
2. // use the player's x velcoity to determine force
3. foreach(Rigidbody2D rb in rigidbody2Ds)      
4. {
5.   rb.AddForce(Vector2.right * force, ForceMode2D.Impulse);
6.   force -= forceFalloff;
7.  }

Here is images of the setup.

Spoiler

Spoiler

In 2021.1.4f1, the rope had enough force to move to here:

I updated the same project to 2021.2.0b3. Did not make a single change. Now the rope only moves to here:

Is there anything that changed in Joint2D or Rigidbody2D or FixedUpdate or anything of this nature to cause something this drastic to happen?

Or am I missing something obvious?

Thanks!