If anyone has programmed Python, Java, or something then you probably know about while loops. I need one of those in my project, but I don't know how to put that into Scratch terms. I can make a for loop, but I don't previously know when I need to stop. I was wondering if any brilliant minds out there* could help me.

Any help would be appreciated!

Thanks!!!


*(I don't really care if you have a brilliant mind out there, in there, or if you have a brilliant mind at all. Just help me if you can, please!)

My memory tells me that a WHILE loop checks before it executes, as opposed to a UNTIL loop that checks after it executes.

If that is your definition, Scratch's REPEAT UNTIL is a WHILE loop. To make it exactly like what you are talking about, you need to put a NOT on the condition.

Do While (Stay_in_loop == TRUE)
do something
Enddi

repeat until <not ((Stay_in_loop) = [TRUE])>// which in boolean world is really Stay_in_loop = FALSE
   do something
end

This is simple; let me show you how to do these things:

While Loop

while (boolean) {
Code
}

repeat until <not (boolean)>
  Code
end

For Loop

for (int i = start; i < end; i++) {
Code
}

set [i v] to (start)
repeat until <not <(i) < [end]>>
  code
  change [i v] by (1)
end

By the way, welcome Schmalex1 to Scratch! Hopefully you'll be able to transition easily. :)

Welcomes,

ErnieParke

Thanks. I'm new to Scratch, so I didn't know. This kinda makes me look like an idiot, but you learn from your mistakes.

Thanks again!

12424 wrote:

repeat while <i am new to scratch ::sensing> ::control
wait ::control
end

Did I mean

repeat while <...> ::cstart control
...
end

(if <> then [] else [] :: custom-arg)

Please do not necropost. (That's when you post on a topic that hasn't been opened for a long time. This topic is from 2015).

You actually can get a while loop in Scratch. Here is a link to a project with the while loop.

Here is a link to ScratchBlox, a project that gives you access to quality custom blocks as well as blocks not currently in the Scratch editor (and no, just in case you were wondering, it has nothing to do with Roblox): https://scratch.mit.edu/projects/304034009

See inside the project and click on the sprite named “Control”. The “while” block can be found in this sprite. It will look like the “if” block but it will say “while” where the “if” should be.