Unity 4.6.0b21 2D Colliders broken.

Something that was working with Unity 4.6.0b20 is not working on Unity 4.6.0b21.

I have a character with a basic setup (same as tutorial for character controller):
- Rigid Body 2D
- Circle Collider 2D
- Box Collider 2D

In 4.6.0b20, the character falls and the colliders follow him as expected. So when a collision is found stops.

In 4.6.0b21, the character falls but the colliders remain in the same place. Because of this, no collisions happen, so the character keeps falling.

Something has changed and I must do something different or it is a bug?

 

Sorry guys,

This is not working for me also in Unity 4.6.0RC1.

I think something is happening with RigitBody2D and 2D Colliders. Although I tried creating a basic example just with Unity objects and I'm not able to reproduce the problem. But when I open my project with Unity 4.6.0b20 everthing is working and my character is walking over colliders and with newer versions is falling.

I also tried to create again my prefabs from the begining and sometimes it worked and sometimes the error reapeared without explanation. I will continue trying to find why this is happening.

 

I've encountered issues with 2D colliders and rigidbodies in 4.6 RC1 too. What I found was that if you have 2D physics objects that are instances of a prefab and nested under other regular gameobjects they stop working correctly. The behaviour I saw was really weird, only the last object in the hierarchy would work correctly, while the others would update their position but their collider wouldn't move with the object.

I set up a minimal project that reproduces the issue and submitted it with a bug report.

 

Thanks ihalila!

I think is the same problem I'm having. My objects update their position but their colliders are not moving with them. I'm glad you realised how to reproduce the problem and submitted a bug.

This could have been a horrible bug if entered 4.6 final.

 

I'm experiencing the same problem. However, it only seems to happen in playmode. Collisions work fine again in published builds.

 

It's Case 646715. I can also confirm that the physics did work correctly when I made an Android build and tried on a device, as well as when I opened the attached project in 4.6.0b20.

 

Same problem here, I reproduced the problem on a simple project:

http://answers.unity3d.com/questions/829010/colliders2d-not-working-under-same-parent.html

 

I posted a temporary solution that is working for me, hope will be helpful for you also:

http://answers.unity3d.com/questions/829010/colliders2d-not-working-under-same-parent.html

 

Sounds like related problem what i had just now ( case 647688 ), using 4.6.0f1

If you move sprite+rigidbody2d with rigidbody2D.MovePosition(),
then boxcollider2D doesnt follow the game object anymore (this worked fine in 4.6.0beta20)

But note, this also only happens in editor, if you publish then it works as expected..

 

Yea, but debugging outside the editor would be.... not optimal

 

A script like this on the same gameobject as each collider will let you at least work in the meantime:

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class ColliderBugFix46rc1 : MonoBehaviour {
6.  
7.     void Start () {
8.         collider2D.enabled = false;
9.         collider2D.enabled = true;
10.     }
11. }
12.  

 

could you tell us whats the ETA for next version?

 

When you say: "even as a patch release for 4.6" are you meaning that it is possible to release Unity 4.6 final with this bug and they solve this with a patch?

 

Problem (647688) solved in 4.6RC3, thanks!