Planet's angle speed is not saved

[mmarusiak]

If we save planets when moving and rotating, angle speed is not saved:

[mmarusiak]

By angle speed I meant agular velocity - that's how it's called in Unity actually.

[mmarusiak]

Footage of fix:

[mmarusiak]

Okay, it still does not seem right. Simulation is way too off on load.

[mmarusiak]

Okay, it seems like wee need to also load and save inertia, which indicates how body's resistance in changing angular velocity.

[mmarusiak]

It looks like actually rotation of the planets is not saved and loaded properly.
Actually it is not saved at all...

[mmarusiak]

It looks like actually rotation of the planets is not saved and loaded properly. Actually it is not saved at all...

Left side - screenshot of saved level;
Right side - loaded level in game;

[mmarusiak]

Now it seems like loading values to rigidbodies doesn't work correct:
(left side are values on "original session" and right side is on "loaded session")

[mmarusiak]

As far as I can see, values that doesn't match are rotation and velocity, which can be caused because we load those values before loading slices (slicing planets). So our planet is rotated and has some velocity and then sliced. We should keep these values and assign them once more after slicing probably, they are saved properly in data save file.

[mmarusiak]

Another discovery. I discovered that saving position is slightly off - probably we aren't saving correct position. Instead of planet position we are probably saving base position, which is at the center of slice.

[mmarusiak]

I don't have even idea what's wrong with loading stuff, but something is way off:

Seems like a bit of velocity. But I would go with that that in Unity I can't see option to save and set angular acceleration which body can actually have - it determines how angular velocity changes. So that would be my bet, but still not sure entirely sure about that. If that's actually the reason I think there's no way to approach what my goal here is.

[mmarusiak]

So my guess with angular velocity would seem like the issue here because when we're loading new planet/slice, the body has his angular acceleration equals zero, and goes entirely from zero not like on play, where it gains and just tweeks values that it gained because of contact etc.

[mmarusiak]

As far as I can see, values that doesn't match are rotation and velocity, which can be caused because we load those values before loading slices (slicing planets). So our planet is rotated and has some velocity and then sliced. We should keep these values and assign them once more after slicing probably, they are saved properly in data save file.

Actually rotation is saved and loaded fine - it has just different notation.
On the first one we got 360 + x;
And on the second we got just x;
So when x < 0, it looks odd, but everything with rotation is fine.
(I used eulers here ^)

[mmarusiak]

So only thing that is still off is velocity on the rigidbody, it somewhere needs to load weird values to it.

[mmarusiak]

Fixes issue as much as possible, there is no way to save and load angular acceleration, which is causing this issue. Checked all the other stuff, and save/load values are just the same.

[mmarusiak]

The best way to solve it is to make my own rigidbody, maybe will do it in future.