[Cinemachine] Array index is out of range?

I occasionally pick up lots of errors from the Cinemachine FreeLook cameras I'm using. Am I missing something obvious?

Error is:

IndexOutOfRangeException: Array index is out of range.
Cinemachine.CinemachineFreeLook.UpdateCachedSpline () (at /Users/me/Library/Unity/cache/packages/packages.unity.com/com.unity.cinemachine@2.2.7/Runtime/Behaviours/CinemachineFreeLook.cs:634)
Cinemachine.CinemachineFreeLook.GetLocalPositionForCameraFromInput (Single t)

... which makes me wonder if it's something to do with the vcam initial position?

 

We get the same error (seemingly at random and only within the editor). We can reproduce it (more or less consistently) when we build the project or publish/update the scene containing the Cinemachine Brain using Unity Collaborate. It first appeared when someone copied a Freelook Camera in the scene containing the Cinemachine Brain and published the changes using Unity Collaborate. After that the Freelook Cameras started exposing their Rigs in the hierarchy when activated/deactivated.

To fix it we open a scene not containing a cinemachine brain then reimport the scene containing the Cinemachine Brain and the error is gone (at least for a while ).

 

Interesting! I also use Collaborate, and would certainly have copied a Freelook camera too. I use three Freelook cameras and two brains in the scene. I found the issue difficult to reproduce, but it only occurs in the editor. I have also seen some of the Freelook cameras exposing at least part of their rigs on occasion.

 

I had this same problem. I restarted the scene and it seems to have dissapeared.

 

Sometimes it takes a while to reappear, restarting has not solved the issue for me.

 

Edit:
I just removed ExecuteInEditMode from the directives in CinemachineBrain.cs.
Works fine in playmode. No more errors in edit mode.

Any reason to keep ExecuteInEditMode?


Yeah, this is still a thing. I get:
IndexOutOfRangeException: Index was outside the bounds of the array.
Cinemachine.CinemachineFreeLook.UpdateCachedSpline () (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineFreeLook.cs:617)
Cinemachine.CinemachineFreeLook.GetLocalPositionForCameraFromInput (System.Single t) (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineFreeLook.cs:597)
Cinemachine.CinemachineFreeLook.PushSettingsToRigs () (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineFreeLook.cs:534)
Cinemachine.CinemachineFreeLook.InternalUpdateCameraState (UnityEngine.Vector3 worldUp, System.Single deltaTime) (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineFreeLook.cs:283)
Cinemachine.CinemachineCore.UpdateVirtualCamera (Cinemachine.CinemachineVirtualCameraBase vcam, UnityEngine.Vector3 worldUp, System.Single deltaTime) (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Core/CinemachineCore.cs:288)
Cinemachine.CinemachineCore.UpdateAllActiveVirtualCameras (System.Int32 layerMask, UnityEngine.Vector3 worldUp, System.Single deltaTime) (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Core/CinemachineCore.cs:209)
Cinemachine.CinemachineBrain.UpdateVirtualCameras (Cinemachine.CinemachineCore+UpdateFilter updateFilter, System.Single deltaTime) (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineBrain.cs:293)
Cinemachine.CinemachineBrain.LateUpdate () (at Library/PackageCache/com.unity.cinemachine@2.2.0/Runtime/Behaviours/CinemachineBrain.cs:242)


Every second my mouse is over the Scene window. It happens more often if I move the mouse.
So, just opening the project, I am greeted with about 40 error messages. Nothing seems to be broken gameplay wise, but it makes it hard to see actual issues.

 

restarting scene helped me and yea update to latest version first

 

I'm getting the same error on version 2.2.8, upgraded to 2.2.9 still getting the error. Things like entering play or assembly reload seems to trigger it or make it go away.

Never happened until yesterday after I started changing the camera's top/middle/bottom rig. Not sure what could be wrong, everything looks fine and works as it always did in play mode.

From my initial troubleshooting the problem comes from m_CachedOrbits.Length being 0 while you are trying to use it in this for loop:

Code (CSharp):

1. for (int i = 0; i < 3 && cacheIsValid; ++i)
2.                 cacheIsValid = (m_CachedOrbits[i].m_Height == m_Orbits[i].m_Height
3.                     && m_CachedOrbits[i].m_Radius == m_Orbits[i].m_Radius);

Changing the line:

Code (CSharp):

1. bool cacheIsValid = (m_CachedOrbits != null && m_CachedTension == m_SplineCurvature);

for

Code (CSharp):

1. bool cacheIsValid = (m_CachedOrbits != null && m_CachedOrbits.Length > 0 && m_CachedTension == m_SplineCurvature);

Fixes it.

Here is a full stack of the original error:

[Exception] IndexOutOfRangeException: Array index is out of range.
CinemachineFreeLook.UpdateCachedSpline() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineFreeLook.cs:717
715: bool cacheIsValid = (m_CachedOrbits != null && m_CachedTension == m_SplineCurvature);
716: for (int i = 0; i < 3 && cacheIsValid; ++i)
-->717: cacheIsValid = (m_CachedOrbits.m_Height == m_Orbits.m_Height
718: && m_CachedOrbits.m_Radius == m_Orbits.m_Radius);
719: if (!cacheIsValid)

CinemachineFreeLook.GetLocalPositionForCameraFromInput() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineFreeLook.cs:697
695: if (mOrbitals == null)
696: return Vector3.zero;
-->697: UpdateCachedSpline();
698: int n = 1;
699: if (t > 0.5f)

CinemachineFreeLook.PushSettingsToRigs() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineFreeLook.cs:634
632: CinemachineVirtualCamera.SetFlagsForHiddenChild(m_Rigs.gameObject);
-->634: mOrbitals.m_FollowOffset = GetLocalPositionForCameraFromInput(GetYAxisValue());
635: mOrbitals.m_BindingMode = m_BindingMode;
636: mOrbitals.m_Heading = m_Heading;

CinemachineFreeLook.InternalUpdateCameraState() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineFreeLook.cs:299
297: m_YAxisRecentering.CancelRecentering();
298: }
-->299: PushSettingsToRigs();
300: if (m_BindingMode == CinemachineTransposer.BindingMode.SimpleFollowWithWorldUp)
301: m_XAxis.Value = 0;

CinemachineCore.UpdateVirtualCamera() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Core/CinemachineCore.cs:299
298: //Debug.Log((vcam.ParentCamera == null ? "" : vcam.ParentCamera.Name + ".") + vcam.Name + ": frame " + Time.frameCount + "/" + status.lastUpdateFixedFrame + ", " + CurrentUpdateFilter + ", deltaTime = " + deltaTime);
-->299: vcam.InternalUpdateCameraState(worldUp, deltaTime);
300: status.lastUpdateFrame = Time.frameCount;
301: status.lastUpdateFixedFrame = FixedFrameCount;

CinemachineCore.UpdateAllActiveVirtualCameras() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Core/CinemachineCore.cs:234
232: // Do the round-robin update
233: CurrentUpdateFilter &= ~UpdateFilter.Smart; // force it
-->234: UpdateVirtualCamera(vcam, worldUp, deltaTime);
235: CurrentUpdateFilter = filter;
236: currentRoundRobin = vcam;

CinemachineBrain.UpdateVirtualCameras() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineBrain.cs:318
316: CinemachineCore.Instance.CurrentUpdateFilter = updateFilter;
317: Camera camera = OutputCamera;
-->318: CinemachineCore.Instance.UpdateAllActiveVirtualCameras(
319: camera == null ? -1 : camera.cullingMask, DefaultWorldUp, deltaTime);

CinemachineBrain.LateUpdate() Library/PackageCache/com.unity.cinemachine@2.2.9/Runtime/Behaviours/CinemachineBrain.cs:272
270: filter = CinemachineCore.UpdateFilter.SmartLate;
271: }
-->272: UpdateVirtualCameras(filter, deltaTime);
273: }
274: // Choose the active vcam and apply it to the Unity camera

 

I get what you're saying buy the error is gone since I changed the line.

If you want you can clone my "ALPHA" project in my Collaborate and change the line back.