Thrust problems

[Altar]

I am having a problem with the thrust of my rocket. When I do not have the rocket selected in the hierarchy the thrust appears to be much greater than assigned. When I select the Rocket in the hierarchy the thrust corrects and works accurately. Does anyone know how to fix this?

Thank you

[Nina]

Hi Altar,

There is a strange bug in Unity which prevents the rocket from flying properly when it is selected in the Hierarchy. Try to select something else and click into the game window once to set Unity’s focus on the game window again.

If that didn’t work, try to remove Time.deltaTime from the AddRelativeForce method. Alternatively, test this potential solution in the Rocket.cs:

bool isThrusting = false;

private void RespondToThrustInput()
{
  isThrusting = Input.GetKey(KeyCode.Space);

  if (isThrusting)
  {
    ApplyThrust();
  }
  else
  {
    audioSource.Stop();
    mainEngineParticles.Stop();
  }
}

private void ApplyThrust()
{
  if (!audioSource.isPlaying)
  {
    audioSource.PlayOneShot(mainEngine);
  }

  mainEngineParticles.Play();
}

private void FixedUpdate()
{
  if (isThrusting)
  {
    rigidBody.AddRelativeForce(Vector3.up * mainThrust, ForceMode.Acceleration);
  }
}

Did this fix the issue?

If it does and if you are experiencing issues with the rotation, you could apply this concept to the rotation code.

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See also:

• Forum User Guides : How to mark a topic as solved

[Altar]

[solved] Thank you Nina, knowing that this bug exists I was able to determine which flying speed was the accurate speed and set the prefab thrust to what works properly.

[Nina]

You’re welcome.