Scratch
archived forums
#1 2007-06-02 21:15:40
- 300pockets
- Scratcher
- Registered: 2007-05-27
- Posts: 8
Help! Input in Scratch?
I need a script that tells Scratch what the user input. It'll be a number.
The code is for Basic.
The line of code in basic:
Input N
Print " The number is (n-4)/2."
help would be loved.
I am the original 300pockets of myspace.com/300pockets. I am quite young, and my interests include astrophysics, reading fantasy novels, and using programs such as Bryce5 to create 3D landscapes. I enjoy creating oceans, although I am afraid of swimming in the real seas. My cowardice does not overcome my sense for beauty.
Offline
#2 2007-06-02 22:58:28
Re: Help! Input in Scratch?
Hi 300pockets,
You can do this by using the "When __ key pressed" block, and keeping track of the number typed by the user in a variable. So for example, say the variable is called "user number." Then you could have the following scripts:
When 1 key pressed
set user number to 1
When 2 key pressed
set user number to 2
When 3 key pressed
set user number to 3
etc..
Does this help?
Thanks,
Tammy
Offline
#3 2007-06-03 02:41:42
Re: Help! Input in Scratch?
300pockets wrote:
Input N
Print " The number is (n-4)/2."
Maybe you can do this:
1. Make a variable called N.
2. Right-click on the monitor of N (in the stage), and choose "Show slider".
3. Another right-click to set the slider min and max value.
4. Draw a new sprite, called "OK Button" (or something else).
5. You also need another sprite to tell the result (eg. the Cat).
Your stage will look like that:
Here's the OK button's script:
And Cat's script:
Of course, it's just an example.
Offline
#4 2007-06-03 03:57:37
Re: Help! Input in Scratch?
Similar to using the slider - make the variable "input" visible on screen then:
When up arrow pressed
- increase input by 1
When down arrow pressed
- increase input by -1
When enter pressed
- say " The number is..." for 2 seconds.
- say (n-4)/2 for 2 seconds.
(though you may want to look at alternatives to "say", like Kevin's excellent number printing script:
http://scratch.mit.edu/projects/kevin_karplus/2951)
Web-spinning Spider: http://scratch.mit.edu/projects/Mayhem/18456
3D Dungeon Adventure: http://scratch.mit.edu/projects/Mayhem/23570
Starfighter X: http://scratch.mit.edu/projects/Mayhem/21825
Wandering Knight: http://scratch.mit.edu/projects/Mayhem/28484
Offline
#5 2007-06-03 11:19:53
- kevin_karplus
- Scratcher
- Registered: 2007-04-27
- Posts: 1000+
Re: Help! Input in Scratch?
If you want to parse typed number input, take a look at my RPN_calculator. you can't catch minus signs and periods from the keyboard, though, as they did not provide that capability in scratch.
http://scratch.mit.edu/projects/kevin_karplus/2164
Offline