TypeError: Cannot read properties of undefined (reading 'transform')

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1

Hi guys,
I have upgraded to Needle 3.47.0 from a far older version, 3.36 or there abouts. I am now getting an error accessing the transform of one of my objects and I dont know why. In the code below, I want to set the position of an object directly but it not longer works and gives me the error in the title of this post. The same occurs if I leave out the “.transform” and directly call “gameObject.position.set”.

What am I doing wrong here? Again, this has worked for months. The object isnt nul btw.

It is specifically this part giving the issue "
this.horseCameras[i].gameObject.transform.position.set

public focusOnRacerJS(index : number) {
  this.broadcastCameraActive = false;
  if (this.mainCamera != null && this.horseCameras != null) {
    GameObject.setActive(this.mainCamera.gameObject, false);

    //set the camera target to the racer
    for (let i = 0; i < this.horseCameras.length; i++) {
      if (i == index) {
        GameObject.setActive(this.horseCameras[i].gameObject, true);
        //reset the camera position
        this.horseCameras[i].gameObject.transform.position.set(this.horseCamDefaultPosition.x, this.horseCamDefaultPosition.y, this.horseCamDefaultPosition.z);

      } else {
        GameObject.setActive(this.horseCameras[i].gameObject, false);
      }
    }

}
}
2

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3

Hi @nostalgicbear

what do you see in the browser console when you log this.horseCameras[i].gameObject or this.horseCameras[i]?

4

Thanks Marcel, you led me to the solution as usual. It was undefined, due to me having declared the list as:

  @serializable(Object3D)
  public horseCameras?: Camera[];

instead of


  @serializable(Camera)
  public horseCameras?: Camera[];

Used to work in the older versions, so I completely overlooked that today.

5

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