Scratch
archived forums
#1 2012-02-05 09:46:59
I need help ASAP!
I am making a binary converter on scratch. It's a project that is due on Monday. I am having trouble getting my sprite to say the answer. For example if I have it marked with a 64, 16, 8, and a 2. I need it to tell me that the answer is 90.
Offline
#2 2012-02-05 09:56:24
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: I need help ASAP!
I'm confused. What exactly do you want? 
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#3 2012-02-05 10:02:50
Re: I need help ASAP!
I need to know how to get my sprite to tell me the answer. It's a binary converter so it's only dealing with ones and zeros. So if I have a one where 64, 16, 8, and 2 are I need my sprite to tell me that the answer is 90. If this makes it more clear. I'm confused just trying to write it down.
Offline
#4 2012-02-05 11:06:43
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: I need help ASAP!
Can you please upload your current project; then I might be able to help you better. 
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#5 2012-02-05 13:01:03
Re: I need help ASAP!
scimonster wrote:
Can you please upload your current project; then I might be able to help you better.
It sound like he/she needs a way to find the total of the numbers.
If that's the case, add all the numbers to a list named "numbers". Create a variable named "counter" and a variable named "result". Then use:
set [counter v] to (1) set [result v] to (0) repeat (length of [numbers v] ) set [result v] to ( (result) + (item (counter) of [numbers v]) ) change [counter v] by (1) end say (result)You can replace that last block with whatever you want to use to tell the answer.
Proudly a Librarian at Your Local Block Library. A Solution to Necroposting Support Endless New Scratch Project Possibilities!
Offline
#6 2012-02-05 13:11:10
- RedRocker227
- Scratcher
- Registered: 2011-10-26
- Posts: 1000+
Re: I need help ASAP!
Yep, Greenatic got it spot on.
Why
Offline
#7 2012-02-05 13:24:58
Re: I need help ASAP!
Ok so assuming that the places for the binary are kept in a list (1st row is 1, second 2, 3rd 4 etc.).
set (total) to [0] set (counter) to [0] repeat [max number of bits of binary number] change (counter) by [1] change (total) by (item (counter) of [binarylist v]) * 2^(counter) endSomething like that...probably replace the 2^counter with values from another list since you can't do ^ in scratch.
Offline
#9 2012-02-05 15:09:51
Re: I need help ASAP!
So when you click on the grey box it turns it yellow and the yellow box below it grey and the zero changes to a 1. I need to be able to get my sprite to say the total of the numbers if I had more than one 1 at the bottom.
Offline
#10 2012-02-05 17:26:01
Re: I need help ASAP!
Cos140 wrote:
So when you click on the grey box it turns it yellow and the yellow box below it grey and the zero changes to a 1. I need to be able to get my sprite to say the total of the numbers if I had more than one 1 at the bottom.
OK, so create a variable named "counter", a variable named "result", and a list called "numbers". This script, when run, will cause the sprite that runs it to say the answer:
delete [all v] of [numbers v] add ( ( ( [costume # v] of [Sprite23 v] ) - (1) ) * (128) )to [numbers v] add ( ( ( [costume # v] of [Sprite23 v] ) - (1) ) * (64) )to [numbers v] add ( ( ( [costume # v] of [Sprite24 v] ) - (1) ) * (32) )to [numbers v] add ( ( ( [costume # v] of [Sprite25 v] ) - (1) ) * (16) )to [numbers v] add ( ( ( [costume # v] of [Sprite26 v] ) - (1) ) * (8) )to [numbers v] add ( ( ( [costume # v] of [Sprite27 v] ) - (1) ) * (4) )to [numbers v] add ( ( ( [costume # v] of [Sprite28 v] ) - (1) ) * (2) )to [numbers v] add ( ( ( [costume # v] of [Sprite29 v] ) - (1) ) * (1) )to [numbers v] set [counter v] to (1) set [result v] to (0) repeat (length of [numbers v] ) set [result v] to ( (result) + (item (counter) of [numbers v]) ) change [counter v] by (1) end say (result)
Last edited by Greenatic (2012-02-05 17:29:05)
Proudly a Librarian at Your Local Block Library. A Solution to Necroposting Support Endless New Scratch Project Possibilities!
Offline
#12 2012-02-05 17:47:45
Re: I need help ASAP!
Cos140 wrote:
Thank you so much!!
No problem.
Proudly a Librarian at Your Local Block Library. A Solution to Necroposting Support Endless New Scratch Project Possibilities!
Offline