Reversed motion of elements in ParticleSystem

Hello Unity Community!

I want to make a "simple" particleSystem, where the movement of the elements is reversed: particle elements appear at a given distance (+ maximum random spread) and accelerate and move towards the center of the particleSystem. Imagine a black hole that is pulling and consuming light and matter...

How can I achieve such an effect with a ParticleSystem? Is that even possible in Unity 5.4?

 

It looks like you might be able to do this with the Legacy particle system, but I really don't know the details.

http://answers.unity3d.com/questions/138207/inverted-particle-emitter.html

[EDIT]

Yeah, OK I was able to set this up pretty quickly.

Create an empty GameObject to hold the particles. Add components:
- Ellipsoid Particle Emitter
- Particle Animator
- Particle Renderer

In the Ellipsoid Particle Emitter, set the Tangent Velocity to (0,0,-1), set the Min Energy to to 2, the Max Energy to 1, and the Ellipsoid to (5,5,5). This creates a simple implosion type effect.

It's not perfect - some of the particles keep going after reaching the center so that they start moving outward again, but I bet if you play with the settings that you could get it to work right for you. It might be as simple as adjusting the size and scale so that the overshoot of the center becomes unnoticeable.

 

Min Energy 0.1
Max Energy 1
Tangent Velocity (0,0,-4)

seems to work pretty well.

 

Thank you, @ErisCaffee, it's really working!
I still hope that someone can figure out a solution with the current particle system, because at some of the future release the Legacy particle system might just disappear..

 

With the particle system, set the start speed to negative, make the shape a sphere that emits from shell, set collision to world and have a lifetime lose of 1, and put a collider inside with it's layers set to collide with the particles.

 

I wouldn't bother with the collision, collisions with particles can get expensive fast. Instead you can manipulate the start lifetime so that particles die when they reach the centre.

If you are going with collisions set it up against a single collider, rather then world.

 

They have already announced its removal.

 

Not just announced, the removal started in 5.4.

http://forum.unity3d.com/threads/legacy-particle-system-deprecation.420351/

 

Thank you very much, all! Gonna test that tomorrow

 

Mix in a little add force using the remaining life as a modifier, and you can get some fun effects pretty quickly.