Ok what I'm try to do is to make a semi solid platform… which is a platform which you can jump through!
BUT the problem is that I can't get it to work and I tried to tinker with it.
I do have a solution that could work but I don't want to add any additional sprites to this project since i'm trying to compress the length of code needed
Is there any way I could implement an easier solution without having to add any other sprites?

Here is the project: https://scratch.mit.edu/projects/737361753/

And the problem where it occurs is in the sprite “Kirby hitbox”

So by semi-solid do you mean you can pass through it from one way but not the other? For example, you can jump through the bottom of it but you can't fall through it.

Yes you got it

The platform is supposed to be a one way platform

uh help i need a way to make a semi solid platform for my sonic game i need it used using these blocks

when green flag clicked

forever

change [gravity v] by (-1)

define semi solid

perhaps you could make it that the hitbox can't interact with the semisolid block when the hitbox is moving upwards

if <<touching [ semi-solid] ?> and <not <[Yv] > [0]>>> then
interact with semisolid

end

Follow griffpatch's platformer tutorial, specifically episode 13

when <key (enter v) pressed?> :: events
say [You pressed the enter key!]

when green flag clicked
forever
wait until <key (join [en] [ter]) pressed?>
say [You pressed the enter key!]
end

Um guys this was posted like 2 years ago… not to be a cop but don't necro post or else you'll get in trouble ok?