ProBuilder 4.0.x API namespace not found on unity 2018.3

Howdy, I had a bit of code written before that found all the probuilder objects on the scene and performed some operations on them that I needed. This was using ProBuilder 3.0.9 from the Package Manager. Everything was copacetic.

Today I thought I'd go through and do some package upgrades and saw there was a new version of ProBuilder. Updating it broke my script though. My code isn't anything crazy, I'd say.

Code (CSharp):

1. //some more namespace...
2. using UnityEditor;
3. using UnityEngine;
4. public class GeneratePolygonsFromMeshForGameObjects : MonoBehaviour {
5.     [MenuItem ("Tools/Generate/Polygons/ProBuilder Objects")]
6.     static void HandleProBuilder() {
7.         GameObject[] objects = FindObjectsOfType<ProBuilder.Core.pb_Object> ().ToList ().Select (pbobj => pbobj.gameObject).ToArray ();
8.         ProcessObjects (objects);
9.     }
10.     //Etc...

After updating versions, It seems that Visual Studio can't find the ProBuilder.Core.pb_Object package. I looked through some of your example packages and they seem to be inconsistant as to what the namespace should be.
https://github.com/Unity-Technologies/ProBuilder-API-Examples/tree/master/Editor

I see both

Code (CSharp):

1. using UnityEngine.ProBuilder;
2. using ProBuilder.Core;

Visual Studio doesn't know what to do with either of them.

Any suggestions from the powers that be? I'm assuming I'm doing something bone headed, just not sure what!

 

ProBuilder 4 changed a lot from 3.0.9. Not only are the namespaces different, but they are now using Assembly Definition files, so you'll need to link the references in your own asmdef files.

 

Ah! that's probably the missing link for me, as Unity seems fine but VS is throwing fits. I'll bet that's the issue though.

 

So, i tried to use the examples in my project. specifically, the mesh editor one. it works without any problem in unity editor when i play the project. but when i build the project it wont work. I can hover my mouse on cube face and the face color change. but when i want to drag the face these errors come up: (I have changed MeshEditor.cs a bit, so I put the code for each line after ** in errors)


NullReferenceException: Object reference not set to an instance of an object
at UnityEngine.ProBuilder.SharedVertex.GetSharedVertexLookup (System.Collections.Generic.IList`1[T] sharedVertices, System.Collections.Generic.Dictionary`2[TKey,TValue] lookup) [0x00001] in F:\unityTest\PCS\Library\PackageCache\com.unity.probuilder@4.0.5\Runtime\Core\SharedVertex.cs:145
at UnityEngine.ProBuilder.ProBuilderMesh.get_sharedVertexLookup () [0x00014] in F:\unityTest\PCS\Library\PackageCache\com.unity.probuilder@4.0.5\Runtime\Core\ProBuilderMesh.cs:288
at UnityEngine.ProBuilder.ProBuilderMesh.GetCoincidentVertices (System.Collections.Generic.IEnumerable`1[T] vertices, System.Collections.Generic.List`1[T] coincident) [0x00039] in F:\unityTest\PCS\Library\PackageCache\com.unity.probuilder@4.0.5\Runtime\Core\ProBuilderMeshFunction.cs:647
at UnityEngine.ProBuilder.ProBuilderMesh.GetCoincidentVertices (System.Collections.Generic.IEnumerable`1[T] vertices) [0x0001a] in F:\unityTest\PCS\Library\PackageCache\com.unity.probuilder@4.0.5\Runtime\Core\ProBuilderMeshFunction.cs:550
at ProBuilder.Examples.MeshEditor+MeshState..ctor (UnityEngine.ProBuilder.ProBuilderMesh mesh, System.Collections.Generic.IList`1[T] selectedIndices) [0x00019] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:25
at ProBuilder.Examples.MeshEditor.BeginDrag () [0x00092] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:124
*****m_DragState.meshState = new MeshState(m_Selection.mesh, m_Selection.face.distinctIndexes);

at ProBuilder.Examples.MeshEditor.HandleInput () [0x00033] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:91
at ProBuilder.Examples.MeshEditor.Update () [0x00031] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:60
(Filename: F:/unityTest/PCS/Library/PackageCache/com.unity.probuilder@4.0.5/Runtime/Core/SharedVertex.cs Line: 145)

Uploading Crash Report
NullReferenceException: Object reference not set to an instance of an object
at ProBuilder.Examples.MeshEditor.UpdateDrag () [0x00014] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:137 *****var indices = m_DragState.meshState.indices;
at ProBuilder.Examples.MeshEditor.HandleInput () [0x00070] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:99 *****UpdateDrag();
at ProBuilder.Examples.MeshEditor.Update () [0x00031] in F:\unityTest\PCS\Assets\Scripts\Modeling\MeshEditor.cs:60 *****HandleInput();
(Filename: F:/unityTest/PCS/Assets/Scripts/Modeling/MeshEditor.cs Line: 137) *****var indices = m_DragState.meshState.indices;


Does anyone else experiencing same thing?
gabrielw_unity can you help please?

I am using Unity 2019.1.5 and ProBuilder 4.0.5.

 

That's a null pointer error. Looks to me like something isn't hooked up right or initialized. Make sure all your game objects have associations where you need them. Otherwise, put in a debugger where you changed code and see if you can back track why your objects are null.

 

Thanks for answer. Ive been trying to see why there is a null reference, but i couldnt. and again, this just happen in build version. not in unity itself. have you generate mesh and work with it in build version with probuilder?

 

Oh, if that's a build error, it could be something like you have a script that uses the UnityEditor namespace in your game logic. By design, the UnityEditor namespace doesn't get compiled into final builds, it's just available for editor scripts and such. Not saying that's your issue, but it's the first thing that comes to mind.

I actually haven't gotten to making a build with anything that uses probuilder yet.

 

its not a build error. the build finish successfully. and when I hover my mouse on one of the mesh faces, the face color will change. but, when I want to drag the face the error happens. I will try to dig more. maybe there is a solution for it.


EDIT: Ok, I found where the problem is. In MeshEditor.CS there is a class name MeshState which runs a function name GetCoincidentVertices(selectedIndices). this little guy returns null in Build version. I have no Idea how to fix it. but I hope unity does it soon.

 

Thank you for respond and sorry for late answer. didnt have internet

You dont need my code really. if you download the Unity ProBuilder API Example, and build "Mesh Editor" Scene, you will see that it wont work. However, I attached two files where i made some changes to make it work. but i know i will have problems later since my solution is not the best!

There are two other things to mention:

1- I can't file mesh exporting API. like if i want export OBJ after building the project.
2- in mesh editor scene, if you hold "Alt" + Left mouse button, you will have Gimbal lock at some point.

Please let me know if you need other information from me and thank a lot for your help.

 

Hi @kaarrrllll just wanted follow up on this topic?