Scratch

berberberber wrote:

Join adds the 2 strings.

So,

when gf clicked
ask [what's your name?] and wait
say (join [hello,] (answer))

Would have the sprite say the answer.

Modulo, or mod, gives the remainder of the 1st number divided by the second.

So,

((28) mod (9))

gives 1.

I don't quite understand what you mean for the mod block. Isn't that the same as the division block? 

The join block, joins to strings together. I use it a lot in Scanning stuff. Here's an example of a use: you have a picture with black squares and white squares (like those things you scan everywhere with your iPhone). You want to be able to save it in data. So, you say that black=1 and white=0. So you set it up so that it would move 1 pixel, sense if it's touching black or white, and record it. Well, how do you record it? You have a variable and you add this script:

 
if <touching color [#FFFFFF]?>
set [var v] to <join (var) [0]>
else
set [var v] to <join (var) [1]>
end

that way it would take the stored value it has, let's say it's 10010101, and add either 1: 100101011, or 0: 100101010. You would be able to do that another way, but this way is more understandable.
I use the join block like that in this project. Download and study the scripts if you still don't understand.
Another way people use it is to put something for looks, like percentage. Let's say they have a variable: score, and a variable: actualscore. You would have score show, have actual score have a number from 0-100, then do this:

 
set [score v] to <join (actualscore) [%]>

For the

 <()mod()>

block, it's like the

 <()/()> 

block, but instead of reporting the answer, it reports the remainder.
It's a good use when you implement your own direction system, and you want it to stay within 0-360. So, you would have this:

set [direction v] to <(directionvar)mod(360)>

That way, if direction ever get's below or above 360, it'll set it to it's right spot in 0-360.


Hope that helps!

EDIT: Wow! epic outpost

Last edited by TorbyFork234 (2012-08-12 22:52:20)

Zangooser wrote:

Sorry to bump a (somewhat) old topic, but I found another one that's puzzling:

round ( )

When I tested it out by making a script like this:

when gf clicked
say (round (10))

...all it said was the number 10, so apparently, no calculations were made. I've tried it with other numbers, too.
What's it for?

rounding a decimal

round (5.2) = 5
round(5.7) = 6

berberberber wrote:

It rounds the number.

So,

say (round (8.7))

would actually say 9.

Oh. Thanks, ber! The names of the blocks are just so vague, it's hard to tell what they stand for. XP