Particle overlap

foundmarble · Post by **foundmarble** » Thu Oct 28, 2010 7:52 pm

Here is the senerio. I have a bird's eye view of a few roads. I am using particles for the cars going down the road (straight line). Is there a way to NOT have them overlap using particles? (looks very odd to have a car on top of another) I know I can use the evenly spaced button, however, it would look too uniform. I'm afraid the answer is no, however, I still wanted to throw it out to the forum.

jahnocli · Post by **jahnocli** » Thu Oct 28, 2010 11:18 pm

In response to your question, I have another question: is it possible to use physics with particles? (I can't test this, I only have 5.6). If it is possible, maybe some collision detection would solve your problem?

foundmarble · Post by **foundmarble** » Thu Oct 28, 2010 11:25 pm

I think physics may solve it however, I have 6.2...No physics.

Post by **Víctor Paredes** » Fri Oct 29, 2010 2:03 pm

You can't use physics on particles.

jahnocli · Post by **jahnocli** » Fri Oct 29, 2010 5:28 pm

selgin wrote:You can't use physics on particles.

bbbbbrrrrrrrreeeeeeeEEEEEEEYYYYYOOOOOOOOWWWWWWWooooooo!!!!!!! idea shot down in flames! Oh well...

Post by **Víctor Paredes** » Fri Oct 29, 2010 10:30 pm

jahnocli wrote:
selgin wrote:You can't use physics on particles.
bbbbbrrrrrrrreeeeeeeEEEEEEEYYYYYOOOOOOOOWWWWWWWooooooo!!!!!!! idea shot down in flames! Oh well...

Sorry... I didn't wanted to be so hard.

jahnocli · Post by **jahnocli** » Fri Oct 29, 2010 10:50 pm

No problemo, dude -- I was just having a bit of fun. You give much more than you take...

fracturedray · Post by **fracturedray** » Sun Oct 31, 2010 5:27 pm

I tinkered around but couldn't find a perfect solution.

I did however find some decent settings. that may help...

started with the scripts/particle effect/rain

As you can see in the image there are 3 particle groups that are varied in location to give variety to the release. I also for this test added three colors for variety and moved them around in the layers so they would not match up.

I tweaked the settings a little for each particle group, so settings in the image above are for only one group.

Rain 2 is the same as screen shot except...
Particle & Preview Count 34
Velocity 0.50
Velocity Spread 0.02

Rain 3 is the same except...
Particle & Preview Count 38
Velocity 0.50
Velocity Spread 0.01

The variation made it so that each lane would not move at the same pace.

The velocity spread kept the particles from getting to close to one another.

Also note that the size of the particles emitters (source width, height, depth) are all 0.

I did tinker more with it and found if I change Velocity Spread to 0 I can bump up the particle count more and more and not have overlapping. So tinker around and have fun with it.

Hope this helps a little.