How to make particles from CC Particle World shoot out straight?

Question

I am trying to use CC Particle World emit particles from the bottom of the screen and have them shoot towards the top. I want them to move in a fully straight line towards the top. I've tried using the gravity function, but that seems to only make it so they begin moving in a straight line faster rather than emiting in a straight line.

thepixelsmith · Answer

If you mean in a straight line like a pen writing I would use a different effect. If you mean in a single direction like a jet stream or a flame trail.

In Physics set:

Animation: DIrection Axis

Velocity: 0

Gravity: -1

Extra: 0

Extra Angle: 0

That should give you a directional particle jet.

In Producer you can control the size of the emmitter so you can have a narrow or wide start to the particles. Keep in mind the particles will widen out at the end.

Unless you need a specific look to the particles that only particle world can provide I would use CC Particle System 2, it's controls a a little bit simpler.

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