LÖVE

EDIT: It seems it's a 0.10.2 specific bug, not OS-related bug.

I've found a quite peculiar bug that hopefully someone can help me with.

I have a level, made up of a bunch of rectangle bodies, joined by weld joints, and revolute joint in the middle. Weld joints are represented by red wiggly dots made very carefully in Paint .

Here's how it looks before level's physics are turned on:
Here's how it looks like after physics are turned on, on my Windows partition:
Here's how it looks on my Android tablet and my Arch partition:
As you can clearly see, the bodies on the edges collapse for some reason.

That's queer, box2d has no platform-specific code. Can you post a minimal example that reproduces the problem?

Also, can you print the dt's that go into world:update()?

You might be able to fix this by switching to a fixed-update love.run but if that's the case you will probably expose an underlying performance problem in your game.

That last screenshot looks like the sort of thing that might have happened before reference angle was added to the weld joint constructor. Are you 100% sure these screenshots are all from the same version of Love?

airstruck wrote: ↑Mon Feb 13, 2017 7:54 pm That last screenshot looks like the sort of thing that might have happened before reference angle was added to the weld joint constructor. Are you 100% sure these screenshots are all from the same version of Love?

That seems to be the cause. My Linux and Android version of Love was 0.10.2, which I did not notice. Now that I've upgraded Love on my Windows, same bug happens. I'll see if I can reproduce bug with a standalone simple program. Perhaps, it's just my game.

I misunderstood. It's not a bug. It's just that the angle of 0 rad is enforced between two bodies now (default values). Here's how my Weld joint initialization looks like now:

(anchor's positions are repeated, since I connect bodies in one point) Thanks for the tip, airstruck.