Particles with custom shader

[MattDevn]

Hi guys! I have a problem with a formula in a custom shader. I would to copy this particles shader in this website: https://www.sprite.com/zerolimits

I made a JSfiddle with my code: https://jsfiddle.net/MattDevn/c9bL21k5/150/
As you can see in my example I am not able to do these movement:

• In Y axis I am not able to restart particles from the floor
• in X axis I’m not able to make some sort of random movement
• I’m not able to make random alpha

Someone could help me?

[prisoner849]

Hi!

@MattDevn

• In Y axis I am not able to restart particles from the floor
• in X axis I’m not able to make some sort of random movement
• I’m not able to make random alpha

An option from scratch. Use it as a starting point:

[MattDevn]

Ok Nice! thank you!