Getting Particles to converge on one point in space

Hey all,

I don’t know if this is possible, but I’m attempting to have an ellipsoid of particles that all get “sucked up” into one point in space, as if a vaccuum hose was sucking all the particles into it. I know that the particle system is a bit limited, but is there any way to achieve this effect?

Thanks in advance!

Two ingredients you need to make this work:

http://unity3d.com/support/documentation/ScriptReference/Particle-position.html

thanks for the reply!

that makes a lot of sense. I’ve luckily been learning about the lerp functions. I do still have a question of how to access particle.position though. A little more info on that part of it would be greatly appreciated!

Depending on what you’re after exactly, you can make a spherical mesh, reverse the normals so they’re pointing inward, and use that as a mesh particle emitter. Then set the particle lifespan so the particles disappear when they reach the center.

–Eric

What i’m after is someone holding a vaccuum hose, pointing it horizontally at the particle system. The particles fly out of the emitter, and travel horizontally towards the opening in the vaccuum hose, a single point in space.

Here’s a little example for making particles move to a position…

356819–12411–$particlemovement_110.zip (1.06 MB)

Then use the same basic idea as given before with the mesh for the particle emitter, but make it an arc. BTW, that idea with the sphere is pretty clever.

I downloaded that package and noticed it uses a “standard-particle” material and it looks quite nice, but was unable to find it in standard assets. Why is that?

You can do a lot of fun things with emitting particles from meshes, but if you want to have all the particles move to a single position the example I posted is a good start towards a vacuum effect.

Would it be too much trouble to get that image you used in the demo? It looks really nice for particles.

What demo and what image? :wink:

The demo you uploaded had a really nice fading circle which worked well for particles. I am that incompetent at art that I could not replicate it well. It says it is part of some standard particle material, but I was unable to find that in the standard assets. =/ It’s probably right in front of me.

Ah, nevermind, I got it. I had to make some changes to mine to import as RGB, which I really don’t understand as that has no alpha as far as I knew.

Here’s a more modern version of the same kind of thing with some cool sin waves thrown in. My goal was to make an updated version of the particle effect for a vacuum like in Luigi’s Mansion. This uses the Shuriken Particle System that was introduced in Unity 4.3. I built this in Unity 2018.2.15.

https://vimeo.com/301532765

The UnityPackage is attached.

3904501–332518–ParticleVacuumTestScene.unitypackage (8.41 KB)

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