As far as I know, the x randomizer creates the particles on many spots on the x axis?
Does it take much more cpu capacity if you just make a few more particle objects diagonally?
No and yes. More particles, more cpu is needed, but changing x or y randomizer (its actually size of emitter, you know) only change size of place that creates particles.
chrisbrobs, damn it works! Such simple solution, thank you sir. And about masking - I don't know how to use it in Construct
Porlo, thanks mate, but this is not what I want.