Strange behavior in 2D platformer tutorial

Hi guys, sorry if this has already be addressed, I did search the forums first.

I'm doing the 2D platformer tutorial using Unity 3.4. Everything works, but I get really strange behavior from the crates. When you first start the game they're fine, but as soon as one falls off the edge and drops off the screen (hitting the death zone I imagine) it starts flying all over the screen really fast and bouncing off of things. If it lands back on the platform and manages to stay put (sometimes it sits there for a split second then decides to go flying around again) it will kind of vibrate and hop around a little. I'm guessing this has something to do with the rigid body?

Thanks for any insight anyone has,

Matt

 

Trying it later, will report to you if i find anything.

Anyways i realized the problem isn't with Unity's rigidbody because i tried using a blank project and creating some cubes and make then bounce with rigidbody. I am thinking might be the way it is scripted. Going to take a in depth look later.

 

thanks zine92. Just saw this thread and think maybe there's something similar going on:

http://forum.unity3d.com/threads/76729-rigidbody-vibration

 

In case anyone else comes across this, here's how I fixed it. Seems that some things have probably changed in Unity since this tutorial was made (Unity 2).

1. Remove the configurable joint components from the crate and spaceship prefabs. Also from the ball if you followed that step. It should be gone from all your instances now. If you changed them, and they're no longer linked to the prefab, go remove this component from them.

2. Rigidbody has Constraints options available in the inspector that I'm guessing were added after this tutorial was made. For each of the prefabs(or individual props you're using) set Freeze Position to Z, and Freeze Rotation to X and Y.

3. Run your level. Should work fine now. In scene view I noticed that crates that fell off the platform are just sitting down there on the death zone. Should probably destroy them when they hit it if you have a very big level with lots of props that can fall.

 

It looks like the 2d tutorial uses a configurable joint, and that was broke in the 3.4 update. In the release notes Unity says they fixed it, but it seemed to be working fine before, now it is certainly broke. You can no longer make it work in world space.

 

I thought I was losing my mind. Thanks for your help

 

Thanks for the links. Guess they should fix it soon.

 

Ran into the same problem, found this thread which helped resolve it. One note, the spaceship in the demonstration level doesn't seem to be an instance of the prefab, so I had to manually change the instance of the ship as well.