Scratch

Variables are used for many purposes. They can help make complex scripts possible, but I'll give you the basics. Variables can be used for keeping score of things, and much more. For example, you can have a variable called "score" for a basketball game. When you start the game, you'll want the score at 0, so you'd do this:

When gf clicked
Set [score v] to (0)

That would change the score to zero. When a field goal is scored (relating I a basketball game) you would do this:

Change [score v] by (2)

That changes the score by 2.
Now say you want the game to end when the score reaches twenty. You'll need this block, under variables:

(score)

Then put it in this:

When gf clicked
Forever if <(score) > [20]>
Stop all

In scratch, you can right-click on a block and select help also. The scratch wiki also provides good info. This should help.

Last edited by turkey3 (2012-03-30 21:16:38)

Variable derives from the word "vary". Vary is to change. A variable is something that changes.
Here is a way variables are used:

when gf clicked
go to x: (0) y: (0)
point in direction (pick random (-180) to (180))
set [vary v] to (0)
forever
change [vary v] by (0.1)
if <(vary) > (10)>
 move (vary) steps
 if on edge, bounce
end

Last edited by chanmanpartyman (2012-04-01 18:33:34)

Cool, i guess i could do that but isn't there any way to do it with using variables?
:-/

Variables are just ways to get scripts to do things. You could make a variable, then use scripts to set it to whatever you want. If it is a certain amount, you can have it make a script do something using operations.

Check this out for variables in the Scratch Wiki :
http://wiki.scratch.mit.edu/wiki/Variable