koobas.hobune.stream
Translating js to c#, getting NULLReferenceExeption
I am having problems with a particle in my game. I am following a tutorial that uses javascript, but I am following using C#.
GameObject newParticles = Instantiate(hitParticles, hit.point, Quaternion.FromToRotation(Vector3.up, hit.normal)) as GameObject;
hitParticles.transform.position = hit.point;
hitParticles.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
hitParticles.Emit();
newParticles.GetComponent<ParticleAnimator>().autodestruct = true;
The last line is giving me the error. Im guessing newParticles doesnt have a component "ParticleAnimator". I tried using the js script which works fine,, so I dont believe I am missing any objects in my scene, and it must be something with my code (new to C#).
Here is the working js script
var newParticles = Instantiate(hitParticles, hit.point, Quaternion.FromToRotation(Vector3.up, hit.normal));
hitParticles.transform.position = hit.point;
hitParticles.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
hitParticles.Emit();
newParticles.GetComponent(ParticleAnimator).autodestruct = true;
If GetComponent returns null, it means the GameObject you're searching from doesn't have that script.
C# GetComponent's syntax is different, and poorly documented...
anyway, this is what you want
newParticles.GetComponent<ParticleAnimator>().autodestruct = true;
I'm actually doing that and but still getting the nullReferenceExeption. I dont know whats going on. Is there a way I can print to the console the components attached to newParticles?
Shot in the dark here,
$$anonymous$$onoBehaviour[] scripts = GetComponentsInChildren<$$anonymous$$onoBehaviour>();
foreach ($$anonymous$$onoBehaviour script in scripts){
Debug.Log(script.name);
}
It simply means that it did not find ParticleAnimator on the newParticles GameObject, so it's a null reference.
This may be happening if ParticleAnimator is a JS because of compile order, since the code appears to be correct and the JS version does work. Look here for more info on this: Click me
I would generally if-check this sort of thing. For example,
ParticleAnimator particleAnimator = newParticles.GetComponent<ParticleAnimator>();
if(particleAnimator != null){
particleAnimator.autodestruct = true;
}else{
//Whatever.
}
