Scratch

dimasrm · 2012-11-21 16:02:15

Dear Colleagues,

I have no idea why my scratch code doesn't work:

For one Sprite, I create a global numerical variable and load it with a random number between 1 and 10.
in the sequence I try to use this variable in a IF instruction (on the same Sprite or on the other) but, unfortunately it doesn't work.
I never run the TRUE condition of the IF...

thank's for any help or idea.

sparks · 2012-11-22 16:00:34

Hi dimasrm, Welcome to Scratch! You put this in the Portuguese forums, so I'll move it over to the "Help with Scripts" Section where you'll probably get a lot more replies smile

ErnieParke · 2012-11-22 16:38:56

The problem might be in your scripts, so could you give them?

MoreGamesNow · 2012-11-22 17:14:35

There is a probably a specific problem with your script. As ErnieParke asked, could you post your scripts. Our responses should be much more helpful if we have concrete code to deal with. smile

dimasrm · 2012-11-23 17:54:43

Hi, friends!
I put my script below. I appreciate your tips.

when gf clicked
  set myNumber to <peek random <(1) to [10]>>
  if myNumber > 5 
     say <BIG>
  else
     say <little>
end

ErnieParke · 2012-11-23 18:21:27

dimasrm wrote:
Hi, friends!
I put my script below. I appreciate your tips.
when gf clicked
  set [myNumber v] to <pick random (1) to (10)>
  if <(myNumber) > (5)>
     say [BIG]
  else
     say [little]
end

Okay, I think that I see the problem. Was your sprite showing when you ran this code?

dimasrm · 2012-11-23 18:32:48

ya, my sprite was showing...and always say "little" doesn't matter what is the value of myNumber..

ErnieParke · 2012-11-23 18:38:04

dimasrm wrote:
ya, my sprite was showing...and always say "little" doesn't matter what is the value of myNumber..

This is strange; could you upload your project?

awesomeness321 · 2012-11-24 09:00:33

dimasrm wrote:
ya, my sprite was showing...and always say "little" doesn't matter what is the value of myNumber..

Did you check the value of myNumber, or did you just assume that it wasn't greater than 5?

mathfreak231 · 2012-11-24 09:49:03

dimasrm wrote:
ya, my sprite was showing...and always say "little" doesn't matter what is the value of myNumber..

Have it show the variable, then test. Like awesomeness321 said, you may need to check the variable.

dimasrm · 2012-11-25 15:04:46

I changed my code and it worked very well.
I put an If instruction like this:
if <<pick random 1 to 10> GREATER THAN <myNumber>>
and this solved my problem

before I was trying to put the result of <pick random 1 to 10> in a variable and it didn't work.

Thank very much to all...

Now I'm going to finish my project

Cactus4u · 2013-03-01 09:34:12

But I still don't understand: Why didn't the first approach work? I really want to understand why I cannot generate a global variable and then use it for an if-statement. In particular, I would like to use it across different objects. Any ideas?

ErnieParke · 2013-03-01 14:56:47

Cactus4u wrote:
But I still don't understand: Why didn't the first approach work? I really want to understand why I cannot generate a global variable and then use it for an if-statement. In particular, I would like to use it across different objects. Any ideas?

Well, I'm also curious at to what might've been causing this. One possibility is that they created two separate variables that look alike, but aren't. Therefore, when they used the variable, they're evaluating the wrong one, giving false results. Also, the other possibility is that something might've occurred during download, messing up a file or two.

Anyway, you should be able to use a global variable in your if statement without any problems. I don't see anything saying otherwise.

With regards,

ErnieParke

mathfreak231 · 2013-03-01 16:09:14

ErnieParke wrote:
Cactus4u wrote:
But I still don't understand: Why didn't the first approach work? I really want to understand why I cannot generate a global variable and then use it for an if-statement. In particular, I would like to use it across different objects. Any ideas?
Well, I'm also curious at to what might've been causing this. One possibility is that they created two separate variables that look alike, but aren't. Therefore, when they used the variable, they're evaluating the wrong one, giving false results. Also, the other possibility is that something might've occurred during download, messing up a file or two.

Anyway, you should be able to use a global variable in your if statement without any problems. I don't see anything saying otherwise.

With regards,

ErnieParke

The most likely reason is that the variable is changed and indexed in multiple sprites.

If you use the variable in more than one place, it may mess up your results.

Cactus4u · 2013-03-01 20:10:22

Wow, you are really fast to respond :-) Thanks a lot for your thoughts!

Scratch

archived forums

#1 2012-11-21 16:02:15

command if

#2 2012-11-22 16:00:34

Re: command if

#3 2012-11-22 16:38:56

Re: command if

#4 2012-11-22 17:14:35

Re: command if

#5 2012-11-23 17:54:43

Re: command if

#6 2012-11-23 18:21:27

Re: command if

dimasrm wrote:

#7 2012-11-23 18:32:48

Re: command if

#8 2012-11-23 18:38:04

Re: command if

dimasrm wrote:

#9 2012-11-24 09:00:33

Re: command if

dimasrm wrote:

#10 2012-11-24 09:49:03

Re: command if

dimasrm wrote:

#11 2012-11-25 15:04:46

Re: command if

#12 2013-03-01 09:34:12

Re: command if

#13 2013-03-01 14:56:47

Re: command if

Cactus4u wrote:

#14 2013-03-01 16:09:14

Re: command if

ErnieParke wrote:

Cactus4u wrote:

#15 2013-03-01 20:10:22

Re: command if

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