Scale Sprite With Speed

[clapperboy]

Hello, I have an object that emits smoke sprites. The object speed affects the emiiter rate.
i.e. the faster the object is, the more sprites are emitted.
That part works fine.

I am controlling the spriteScalePP(X and Y) with a ramp linked to to the particle age.

what id like to do, is have the speed control the maxvalue of the arraymapper.
i.e. the faster the object is, the smoke sprite would then scale more than if the object would go slower.

How can I achieve that?

Thanks

[ptb]

you need to use expressions.

• create new attribute per particle (like scale_pp)
• creation expression something like: scale_pp = $whatever * objectspeed;
• runtime exp: spriteScaleXPP = smoothstep(0,1,age) * scale_pp.

[clapperboy]

Thanks a lot.
works like a charm!