Bug #5098
Docking with claw when claw-equipped ship not focused breaks physics
100%
Description
If a ship with a claw is lined up on another vessel, then focus is switched to the target vessel and the claw engages, both vessels appear to "fall" out of the camera and begin moving anomalously.
This is simple to reproduce in 1.0.2.
- Start a new sandbox game.
- Launch a ship with claw into LkO
- Launch a second ship to serve as a target
- Rendezvous and match orbits
- Switch to the vessel with the claw
- Arm the claw
- Line the clawed vessel up on the other one
- Accelerate to set up a docking lineup
- Switch focus with ] to the target vessel
When the two dock, they'll both fall off screen.
See attached screenshot for debug log, which repeats:
[Exception]: NullReferenceException
[Exception]: NullReferenceException: Object reference not set to an instance of an object
endlessly.
Related issues
History
#1
Updated by ringerc almost 9 years ago
Updated by KSP.log
[LOG 23:28:25.278] stage manager resuming...
[LOG 23:28:25.320] Unpacking Claw Bug Tester
[LOG 23:28:25.320] Unpacking Claw Bug Tester
[LOG 23:28:31.260] SCREENSHOT!!
[LOG 23:28:31.944] SCREENSHOT!!
[LOG 23:28:32.659] SCREENSHOT!!
[LOG 23:28:33.046] SCREENSHOT!!
[LOG 23:28:33.458] SCREENSHOT!!
[LOG 23:28:34.293] SCREENSHOT!!
[LOG 23:28:34.890] SCREENSHOT!!
[LOG 23:28:35.461] SCREENSHOT!!
[LOG 23:28:38.723] [Grapple Module] Grabbing on to FL-T800 Fuel Tank on Claw Bug Tester
[LOG 23:28:38.724] [PlanetariumCamera]: Focus: Kerbin
[LOG 23:28:38.737] [Grapple Joint]: joint ready
[EXC 23:28:38.743] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.743] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
[EXC 23:28:38.747] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.748] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
[EXC 23:28:38.759] NullReferenceException: Object reference not set to an instance of an object
VesselAutopilotUI.LateUpdate ()
[EXC 23:28:38.760] NullReferenceException: Object reference not set to an instance of an object
FlightUIController.LateUpdate ()
[EXC 23:28:38.761] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.LateUpdate ()
[EXC 23:28:38.761] NullReferenceException
UnityEngine.Component.get_transform ()
FlightGlobals.get_upAxis ()
FlightCamera.UpdateCameraTransform ()
FlightCamera.LateUpdate ()
[EXC 23:28:38.771] NullReferenceException
UnityEngine.Component.get_transform ()
VesselLabels.DrawGUI ()
RenderingManager.OnGUI ()
[EXC 23:28:38.776] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.777] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
[EXC 23:28:38.780] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.781] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
[EXC 23:28:38.793] NullReferenceException: Object reference not set to an instance of an object
VesselAutopilotUI.LateUpdate ()
[EXC 23:28:38.794] NullReferenceException: Object reference not set to an instance of an object
FlightUIController.LateUpdate ()
[EXC 23:28:38.794] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.LateUpdate ()
[EXC 23:28:38.794] NullReferenceException
UnityEngine.Component.get_transform ()
FlightGlobals.get_upAxis ()
FlightCamera.UpdateCameraTransform ()
FlightCamera.LateUpdate ()
[EXC 23:28:38.804] NullReferenceException
UnityEngine.Component.get_transform ()
VesselLabels.DrawGUI ()
RenderingManager.OnGUI ()
[EXC 23:28:38.810] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.810] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
[EXC 23:28:38.813] NullReferenceException
UnityEngine.Component.get_transform ()
OrbitPhysicsManager.checkReferenceFrame ()
OrbitPhysicsManager.FixedUpdate ()
[EXC 23:28:38.814] NullReferenceException
UnityEngine.Component.get_transform ()
FloatingOrigin.FixedUpdate ()
.. and so on.
#2
Updated by ringerc almost 9 years ago
Note that this may be related to #5097 - but I can't seem to break timewarp with this technique, unlike the other one, and the breakage caused by this technique seems to be recoverable by leaving to space center if you're fast enough.
#3
Updated by Geschosskopf almost 9 years ago
Updated by - Status changed from New to Confirmed
- % Done changed from 0 to 10
This bug has been reported many times before. It's been around since the Claw was 1st introduced back in 0.23.5. A number of YouTubers have been exploiting this ever since in comedy videos.
#4
Updated by ringerc almost 9 years ago
Geschosskopf wrote:
This bug has been reported many times before. It's been around since the Claw was 1st introduced back in 0.23.5. A number of YouTubers have been exploiting this ever since in comedy videos.
Hopefully the team will have some time to chase such old bugs and stabilize now that "1.0" has hit.
It might be worth closing this as a duplicate then, if there's an authorative bug # for it. I didn't find one.
#5
Updated by Squelch almost 9 years ago
Updated by 
- Status changed from Confirmed to Duplicate
- % Done changed from 10 to 100
Issue #2753 is the earliest report of this.
As requested, marked as duplicate, but please continue to report further findings.
#6
Updated by Squelch almost 9 years ago
- Is duplicate of Bug #2753: New kraken: all ships accelerate randomly and are uncontrollable when time warp is engaged added
#7
Updated by Squelch almost 9 years ago
- Related to Bug #5264: NPE caused by connecting active vessel to non-active vessel klaw added