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Does this exist?

Well, i know i quit a long time ago, but I'm back... I just wanted to know if there was a block/sprite that did the same thing as Geometry Dash Yellow orb (Makes you jump when pressing the jump button)...
https://www.youtube.com/watch?v=jKlSuCTxa3I (If you want to see what i'm talking about). Also, where did the anti-gravity go? I'm kinda curious #smw{o_O?}
RIP my friend's Ridley, he dropped it cuz I combo'd him a bit tol much as Mario.
The anti-gravity went to the patches section (wasn't it always there?)

Can't you just pull off that yellow orb with a note block or a boost block?
It's easily the best thing I've done
So why the empty numb?
I'll check the anti-gravity

On the other hand, the note block makes you bounce when you touch it, but the yellow orb makes you jump only if you click when the cube is in it
RIP my friend's Ridley, he dropped it cuz I combo'd him a bit tol much as Mario.
I haven't tried these myself, but would this block here satisfy what you're trying to accomplish with the yellow orb?

For the gravity request, "anti-gravity" is kinda vague, so I'll supply you with a few different links:

Firstly, there are two [block / patch+blocks] that will reverse gravity. The block is here, and the patch is here.
Secondly, if you want low gravity (like it would be on the moon) you can try these UberASM codes here, here, and here.

I haven't used anything I linked to above personally, but I hope they help you.