Hey, I'm working on my first platformer, and I was wondering how to stop a sprite after it collides with another sprite. I'm using variables like X Velocity and Y Velocity, so I don't want those to be broken after a collision. Does anyone know how?

Well, since you have a collisioncheck with the ground, just add the same collision script to the ground that you do the other sprite. If you want it to bounce the other direction, then change your Xvelocity (or Y!) to a negative number instead of 0. So, if your ground script is (to put it simply) When I touch the ground, stop my movement on the Y axis downwards, basically saying (if jumping sets your Yvelocity to 12, for instance, and you have a forever block always making it go down by .1, persay) Then when you want your character sprite to jump back instead of just stopping, you would want to change your Xvelocity (if it's coming from the side) to, let's say, -4. This should bounce it back far enough to be effective, without it being annoying.

You might also want to post a link to your project in order for people to see what the problem is.

Here's a project that may help
https://scratch.mit.edu/projects/378101950/

@StrangeMagic32 - The link doesn't seem to work.
@enderbrine5858 - Would it help if I sent the script? I'm still having some trouble.
Y Vel Script -

when green flag clicked
if <touching color [#c06e77] ?> then 
if <key [ up arrow] pressed?> then 
set [YVel] to [12]

  

else
set [YVel] to [0]
end
  
else
change [YVel] by (-1)

end

XVel Script -

when green flag clicked
if <<touching [ Block1] ?> or <touching [ Block2] ?>> then
set [XVel] to [-4
repeat until <[XVel] = [0]>
change [ XVel] by (1)
end
end

Sorry if my blocks are inefficient or inaccurate. Making blocks in the forum messages is kinda hard.

There's also forever blocks around those scripts.

Maybe try this script:

when gf clicked
wait until<touching [(Sprite for stopping script with v] ?>
stop [other scripts in sprite v]

Actually, I just want collision detection so it doesn't go past the block, but can still move.

if you are trying to do the collision with two sprites and make one of the sprites disappear, try this. Hope it works!

when green flag clicked
forever
if <touching [random sprite v] > then
hide
end
end

-EndlessSpace- wrote:

@StrangeMagic32 - The link doesn't seem to work.

woops, it's shared now

https://scratch.mit.edu/projects/378101950/

Could you post a link to the project here? If you give us the project, we'll be able to help you a lot more. I'll even be willing to remix it and fix it up for you, so you could look at mine to see what I did.

Here is a script that will work, this is for gravity and ground detection (for the player sprite).
Remember this script is for the player sprite.

when green flag clicked
set [ Y vel] to [0]
forever
change y by (Y vel)
change [Y vel] by (-1)//  This makes gravity.
if <touching [ Ground ] ?> then
set [ Y vel] to [ 0]
change y by (1)// This makes the player sprite be one pixel above the Ground   
end                   // sprite so you are not always touching the ground.
end                        




define Touch Ground
repeat until <not <touching [ Ground] ?>>
set [ Y vel] to [0]
change y by (1)
end

Alright, here's the project.The collision is on level 4. Also, the controls are little touchy, and if it helps, I made the variables visible.
https://scratch.mit.edu/projects/377475239/

From what I can see from your code, there should be no problem with integrating Block1 and Block2 into your backdrops.

You say that you want to be able to move after you touch the block, are you saying a walljump feature?

I'll remix this and fix up your code.

Walljump would be nice, but I mean the sprite moving without it being all jerky. Does that make sense?

Yes, I'm working on it now. You can see the project so far by clicking here.

The game's all done. You can remix it or copy it.

nvm