• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
2
Question by mostlyhuman · Jul 13, 2016 at 08:42 PM · rotationparticle systemcollisions

Particles wont stop rotating after collision

I have some simple cutout particles of leaves that are set to collide only with the terrain. Once they collide I have dampen set to 1 but they continue to rotate in place on the terrain. Any idea what setting I need to change to prevent them from rotating? Here is a copy of my settings (thanks in advance!): alt text

screenshot25.jpg (160.0 kB)
Comment
Add comment · Show 1
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image PuffiToYT · Aug 14, 2018 at 03:46 PM 0
Share

I know this is late but you can use rotation by lifetime with curves

5 Replies

· Add your reply
  • Sort: 
avatar image
2

Answer by PuffiToYT · Aug 14, 2018 at 03:46 PM

I know this is late but you can use rotation by speed with curves because when it lays on the ground it should have speed 0

Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image
1

Answer by grahamvr · Jun 07, 2018 at 11:16 AM

Hey guys, so i've nailed down how to stop rotating particles upon collision using sub Emitters, here's the settings to do so. The theory is- Fire particles which rotate with speed, when they collide with the world, they die; which in turn triggers a kill command removing the particles from the scene. when the particles die, the Sub Emitter spawns new ones which matches the rotation of the main emitter. By turning off a shape emission, they match the old translation.

hope this helps, made my brain fuzzy for a bit.

Grahamalt text


particles-for-stopping-rotation.jpg (348.3 kB)
Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image
0

Answer by Symon231 · Jul 28, 2016 at 01:20 PM

Hi mostlyhuman,

Did you find the solution to the problem you had with the rotation of the particles after collision?

I'm having the same issue here.

Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image
0

Answer by mostlyhuman · Jul 28, 2016 at 01:25 PM

I have not :/ be sure and post back if you do figure it out !

Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image
0
Wiki

Answer by tskrex · Jun 18, 2020 at 06:14 PM

I found a solution,

1.Check "Rotation by Speed"

2.Set Angular Velocity (Under Rotation by Speed) to "Random Between Two Curves"

3.Set the curves as shown in the picture:


Explanation of the curve: Each curve has 0 value until a threshold, as soon as the threshold value is reached the angular velocity is made maximum i.e 900 in my case.


The threshold value (Horizontal Axis Value) will be different for different "start speeds",my start speed is 9 hence the curve. adjust the curve farther away from 0 on horizontal axis to get better results!


alt text


unity.png (17.1 kB)
Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.



Follow this Question

Answers Answers and Comments

63 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Flip over an object (smooth transition) 3 Answers

Rotating cube (World) when player reaches edge. 0 Answers

How to smoothly re-orient an object after a collision? 3 Answers

How to get Raycast surface normal to align particle system? 1 Answer

Particle system rotation/spread not working 1 Answer

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges