Not sure if this is a duplicate (couldn't be bothered to check), but…
What I'm suggesting is a block that looks like this:

if touching [edge v], bounce :: motion

This would be amazing, and could replace the

if on edge, bounce

block. How many times have you been working on a platformer, a pong game, or something else and want to use the “if on edge, bounce” block but for some drawn sprites? I know that I have been wanting this instead of having to go through a process of Boolean inputs and variables. Just look at this:

if touching [Sprite1 v], bounce :: motion

If the Scratch Team wanted, they could probably also add this in!

if touching color [#1143ed], bounce :: motion

I know there is an easy workaround, but the “if on edge, bounce” block also has many easy workarounds as well and this would just be here to make everything easier.

Pretty “edgy” suggestion there, eh?

i'm so sorry for that joke

Anyways, pretty sure this is a duplicate, but I don't have the link .

This is impossible, since there's no way for a sprite to know the angle of whatever it's bouncing against. If by “bounce”, you just mean “reverse direction” without any bearing on the angle of the surface, use this instead:

when green flag clicked
forever
if <touching [thing v] ?> then
turn cw (180) degrees
end
end

Parametric wrote:

This is impossible, since there's no way for a sprite to know the angle of whatever it's bouncing against. If by “bounce”, you just mean “reverse direction” without any bearing on the angle of the surface, use this instead:

when green flag clicked
forever
if <touching [thing v] ?> then
turn cw (180) degrees
end
end

I've heard about that before.

It's possible, but it's hard. You'd need a lot of code. For such pong games, just make it so it teleports to the bottom/top edge whenever it hits the paddle; then make it teleport back after changing direction.