Resolved Particle spread when rotating

Hello! I have blood effect that must throwing particles in front line. It work only when Y angle is 0,90,180 etc, but when rotating is 1-89 effects have spread. Why?

 

Isn't that caused by the fact you are doing this per component?
For instance if there is

Set Velocity Random

with:

• A = (0, 0, 0)
• B = (0, 0, 1)

They are transformed by object rotation (45 deg), so vector A is still zero, but vector B will be (0.707, 0, 0.707), so you get random numbers between 0 and 0.707 on X and Z axis. When you do this per component it means you randomize separately for XYZ and in result you might get vectors like:

• (0, 0, 0.7)
• (0.7, 0, 0)
• (0.7, 0, 0.7)

Try uniform mode so one random number is "scaling" the vector and you should get vectors like:

• (0.1, 0, 0.1)
• (0.35, 0, 0.35)
• (0.7, 0, 0.7)

However personally I prefer Vlad's method most of the time (set from direction) as it works well with Set Position Shape blocks.

 

@VladVNeykov Thanks for your answer. I tried your options and it have the same problem.

@Qriva, I hope that I understand your explanation and i think it looks true, but even with Vlad`s version it looks like:

 

I needed to inscrese lenght of blood, like green box on the screen, because i tried to changed Z to 7. Then i changed speed, as you adviced me, and added Random Number to increase lenght of blood and it works! Now there is no spreading when I rotating the player. Thank you!