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Fixed in 5.1.4

Votes

17

Found in

5.0.0f4

Issue ID

682891

Regression

No

Method WheelCollider.GetGroundHit and terrain changes causes unity crash

Physics

-

Sometimes method WheelCollider.GetGroundHit crashes unity if terrain height is changed, I'm still not sure for real cause.

1. Play scene "terrainbug".
2. Driver anywhere you like :D, after 15 second script "TerrainDeform" (attached on car) will begin spawn holes in terrain with 1 second interval.
3. Unity crash times can variate from 2 second to few minutes, but eventually it crashes.

Reproduced: 5.0.0b2, 5.0.0f4, 5.0.0b15

The fix available in 5.1.3p1 a patch release. Officially will be available in 5.1.4f1;
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Comments (12)

  2. hazer-drum

    Sep 11, 2015 18:54

    I have the same problem in 5.1.3f1 with error "m_InstanceID != 0".

  3. leevermeulen

    Aug 30, 2015 21:09

    I am still getting this crash in Unity 5.1.3p1

    001E3BFA (Maximum) ScriptingManager::RebuildClassIDToScriptingClass
    001E3C81 (Maximum) Scripting::ScriptingWrapperFor
    003FC833 (Maximum) RegisterModule_Physics
    04346A27 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.WheelCollider:GetGroundHit (UnityEngine.WheelHit&)
    0437F5F9 (Mono JIT Code) RTCTankController:SmokeInstantiateRate ()
    0437DE97 (Mono JIT Code) RTCTankController:FixedUpdate ()
    0429E571 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)

    Happening when my tank vehicle goes over destructible game objects and they are removed

  4. .koval

    Jul 18, 2015 21:18

    "A fix will come later in 5.x."

    The same for Unity v5.1.2f1 :(

  5. NeilC_VP

    Jul 15, 2015 10:24

    We've just had this issue too on 5.1.1p2. GetGroundHit is being called from FixedUpdate.

    013E3E3A (Champ test) ScriptingManager::RebuildClassIDToScriptingClass
    013E3EC1 (Champ test) Scripting::ScriptingWrapperFor
    015FBC53 (Champ test) RegisterModule_Physics
    04CCF12F (Mono JIT Code) (wrapper managed-to-native) UnityEngine.WheelCollider:GetGroundHit (UnityEngine.WheelHit&)

  6. glitchers

    Jul 06, 2015 08:46

    I have the same issue as De-Panther & Phong.

  7. Phong

    Jun 15, 2015 18:45

    Same problem with CubeCollider as described by DE-PANTHER.

  8. De-Panther

    Jun 06, 2015 22:32

    Also happen with box collider or any other collider that destroyed while the wheelcollider touch it.

    Simple example:
    Use Edy's Vehicle Physics,
    Take a car and put it above cube,
    Run the game and destroy the cube while the car is on the cube.
    Unity crash!

  9. dburden1

    Apr 17, 2015 16:44

    I can confirm that we have this crash as well on 5.0.1p1, and it doesn't always crash when a WheelCollider is even touching the terrain collision. Terrain modification is a pretty crucial part of our game's back-end. Is there any ETA on a fix for this? Also, would modifying terrain heights in FixedUpdate vs Update be an effective workaround for this issue?

  10. yant

    Apr 14, 2015 13:57

    Don't change terrain from within Update(). A better way to do that would be to have it within FixedUpdate(). A fix will come later in 5.x.

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