Make a particle system rotate with it's parent?

I've found a few threads on this already, but none seemed to give me any answer I could use...

I have a rocket, and a particle system representing it's exhaust, when the rocket is pointing upright, the exhaust/fire/smoke points directly down, away from the rocket, however when the rocket turns say, 90 degrees, the particle system doesn't rotate, despite being a child of the rocket, this results in the exhaust/fire/smoke still pointing downwards, at a right angle to the rocket's orientation.

Rotating the particle system within the scene via the editor also has no effect, the particles still all move downwards.

How can I make the particle system rotate properly? I honestly have no idea this is a problem for a script or the editor

Any suggestions would be greatly appreciated.

Thanks,
Fred T.A

 

Much better - and both are better than Pete's only text post!
Three Unity developers in a row. This is some quality help here.

 

Honestly wasn't expecting so many replies so fast haha, hugely grateful for all the help!

The particle system is a child of the rocket, it's simulation space is local, and it's gravity scale is 0.

Here are some screenies

http://imgur.com/a/YFEVi

Any ideas?

 

I'm using the "Flamestrike" particle system from the Pyro Particles pack from the asset store, here, I'll try with a different particle system first, if that doesn't work I'll put a small simple scene together and share that

Will get back to you ASAP, thanks again

 

You are using the VelocityOverLifetime module, is it set to world space?

 

I think in this particular case, Simulation space should be "world" instead of "local". Secondly, I suspect that Velocity Over Lifetime and External Force modules are doing something against your intended result which I recommend you to disable them temporarily. Actually it would be better if you can expand those modules to show their values.

If you want the flame particles emitted quicker as your rocket accelerates, I recommend you to enable Inherit Velocity-initial (which requires world simulation space) and use negative value, maybe -0.2 to -0.6, really you need to experiment by yourself.

 

FIXED!

It was indeed set to world space, setting it to local has now made it follow the rotation of the rocket, great spot!

Thanks everyone for the help, this issue has been bugging me for ages, glad its solved

 

I had a similar problem and this thread helped me. in the renderer>renderer alignment was not set to local. thanks :-D

 

Great post, I had a similar issue too and after setting Simulation Space to Local, my effect is now following the parent object. I see an initial delay in generating the effect though, even though Start Delay is 0. Does anyone have any idea why ? I am not using any script internally.

Edit: I was able to find an answer here:
https://answers.unity.com/questions/356412/how-to-make-a-single-particle-apear-with-no-delay.html

 

How do you make the arrows align with the direction they're actually moving? Have them point along the same vector they're traveling? Trying to create a "laserblast" effect, and my particles always stay horizontal to the ground plane no matter how I rotate the particle. Tried all the world vs. local settings. thx!

 

I found a solution,
just set the StartRotaion like this:

Code (CSharp):

1. ParticleSystem shadow;
2. shadow.startRotation = -transform.rotation.eulerAngles.z/(180.0f/Mathf.PI);

or if you need all 3 euler angles: than try this way:

Code (CSharp):

1. ParticleSystem shadow;
2. shadow.startRotation3D = -transform.rotation.eulerAngles/(180.0f/Mathf.PI);

 

It worked for my problem. Thanks!

 

T

Thanks Worked for me

 

This is exactly what I was looking for, set the billboard

This worked for me, thanks Richard!

 

@richardkettlewell thanks for the billboard aligment solution

 

I'm having a similar issue to OP's. This animated example is showing my exact problem. When the spaceship rotates the arrows should rotate with it so they're always pointing toward the rear of the ship. The arrows in the animation always point up as the ship rotates. What does it take to make the arrows rotate with the ship? I'm trying to make tracer rounds come out of a gun and I want them aligned to where the gun is pointing and not coming out of the gun barrel horizontally or at other weird angles. Setting billboard alignment to local does not do the trick.

Edit: Posted too soon, I've figured it out. It's a combo of things. Simulation space has to be local, shape module has to be set to align to direction, and render mode has to be mesh with a quad. I've been working on this problem for an hour and a half and I figured out the solution 8 minutes after asking for help, haha. Thanks anyway!

 

Try with this.

 

It worked for me.