WebDeviceInputSystem._pointerCancelEvent Uncaught TypeError: Cannot set property '2' of undefined

pink_blue · August 22, 2022, 8:01am

Hi!
Our project with babylonjs is Published, but sometimes user’s Chrome for Android reports error: Uncaught TypeError: Cannot set property ‘2’ of undefined.
This is where the error occurs:

github.com

BabylonJS/Babylon.js/blob/master/packages/dev/core/src/DeviceInput/webDeviceInputSystem.ts#L592


      
                          this._onInputChanged(DeviceType.Mouse, 0, deviceEvent);

                      }

                  }

              } else {

                  const deviceSlot = this._activeTouchIds.indexOf(evt.pointerId);

          

                  if (this._elementToAttachTo.hasPointerCapture?.(evt.pointerId)) {

                      this._elementToAttachTo.releasePointerCapture(evt.pointerId);

                  }

          

                  this._inputs[DeviceType.Touch][deviceSlot][PointerInput.LeftClick] = 0;

          

                  const deviceEvent: IUIEvent = DeviceEventFactory.CreateDeviceEvent(DeviceType.Touch, deviceSlot, PointerInput.LeftClick, 0, this, this._elementToAttachTo);

          

                  this._onInputChanged(DeviceType.Touch, deviceSlot, deviceEvent);

          

                  this._activeTouchIds[deviceSlot] = -1;

                  this._onDeviceDisconnected(DeviceType.Touch, deviceSlot);

              }

          };

Maybe, this._inputs[DeviceType.Touch][deviceSlot] sometimes is undefined.
I can’t reproduce this error on my mobile, could you help me?
The babylonjs version is 5.9.0, thanks!

RaananW · August 22, 2022, 11:00am

pinging @PolygonalSun

PolygonalSun · August 22, 2022, 9:33pm

Hey @pink_blue, by any chance, did any of the users who found this provide any kind of repro steps or any more information that we could use to figure out what’s going on?

sonipapa · November 14, 2023, 2:54am

Hi I’m also seeing the same error with the same error trace for some users on Android, but I also couldn’t reproduce on my end. The Babylon JS version 5.54.0.

PolygonalSun · November 15, 2023, 8:35pm

I believe that this may have been fixed as a part of version 6 (I think specifically with this PR: WebDeviceInputSystem: Add additional checks for pointermove started Touch events by PolygonalSun · Pull Request #14174 · BabylonJS/Babylon.js (github.com)). Is there any reason for you using that specific version of BJS?

Topic		Replies	Views
TypeError: Cannot read property 2 of undefined Bugs	5	533	February 12, 2021
[Error] TypeError: undefined is not an object (evaluating 'e._inputs[Mi.Touch][c][Oi.LeftClick]=0') Bugs	6	1014	August 24, 2023
Uncaught TypeError: setting getter-only property "pointerId" Questions	7	764	August 4, 2020
Babylon.gui.min.js:16 Uncaught TypeError: Cannot read property 'viewport' of undefined Bugs	2	517	May 10, 2021
Event has no pointerId in 4.2.0-alpha.27 Bugs	15	1101	August 3, 2020

WebDeviceInputSystem._pointerCancelEvent Uncaught TypeError: Cannot set property '2' of undefined

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