Scratch

The-Whiz · 2009-11-16 22:18:48

Scratch has 1 dimensional arrays...

Code:

1-D Array
1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9

But what about 2 dimensional arrays?

Code:

2-D Array
1A. 1   1B. 2   1C.   3
2A. 4   2B. 5   2C.   6
3A. 7   3B. 8   3C.   9

I think this would be a useful addition to Scratch.

scmb1 · 2009-11-16 22:40:46

Yes, it could be useful...

Jonathanpb · 2009-11-16 23:40:01

Good idea! It's great! I thought about this before... but never thought much about it. tongue

greenflash · 2009-11-16 23:42:21

Then it would be very easy to make spreadsheets. It would also be easy to make complex codes (polyalphabetic ones)

I approve! big_smile

Chrischb · 2009-11-16 23:48:32

I love this idea! It would help with branching into more detail, and contains more space as well.

fg123 · 2009-11-17 01:26:25

I love this! My dad wanted me to make a game with scratch and he asked about this. But I said scratch only has 1-d arrays so I couldn't make that game. smile I support! big_smile

The-Whiz · 2009-11-17 07:02:08

Thanks for the support!

Lucario621 · 2009-11-17 14:58:16

I don't see why you need it. In my Level Creator, where it would be probably be needed the most, I didn't need it...

archmage · 2009-11-17 15:05:07

2-D arrays are pretty essential if you want to easily store data that is sorted into grids. Sure you can use many arrays but that just waste time and creates inefficiencies. What if you need 100 rows worth of data, it is practical to make 100 lists? It would also be really really nice if you could put variables inside of variable names when you cal variables.

Last edited by archmage (2009-11-17 15:07:24)

floatingmagictree · 2009-11-17 16:59:05

Erm... what's an array?

Chrischb · 2009-11-18 01:44:10

floatingmagictree wrote:
Erm... what's an array?

An list is the Scratch equivalent of an array.

Paddle2See · 2009-11-18 05:40:33

I would like higher order arrays...but we must remember that Scratch's first goal is to be approachable to beginners. You can always construct an indexing formula so that a 2D array can be stored in a 1D array.

Example:

If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number

floatingmagictree · 2009-11-18 06:55:20

Chrischb wrote:
floatingmagictree wrote:
Erm... what's an array?
An list is the Scratch equivalent of an array.

Oh...

The-Whiz · 2009-11-18 07:20:39

Paddle2See wrote:
I would like higher order arrays...but we must remember that Scratch's first goal is to be approachable to beginners. You can always construct an indexing formula so that a 2D array can be stored in a 1D array.

Example:

If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number

Yeah...

Paddle2See is right again.

Lucario621 · 2009-11-18 17:38:42

Paddle2See wrote:
If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number

Exactly. This is the same general formula that I use for calculating in my level creator player.

archmage · 2009-11-18 18:47:06

If you have some elements that are different amounts of character then that won't work.

samurai768 · 2009-11-18 20:04:08

Paddle, maybe u could make a project of that!

It would be very helpful.

Lucario621 · 2009-11-19 15:12:39

samurai768 wrote:
Paddle, maybe u could make a project of that!

It would be very helpful.

Mine basically uses it, but because mine is a bit more complicated because it has to round the x position to the nearest 30 tile which its well difficult to understand at a glance.

gvdh · 2009-11-23 05:38:14

Of course, if you could add a list as an item of another list, you could then construct n-D arrays

fanofcena · 2009-11-23 06:33:14

yeah gvdh

Harakou · 2010-06-17 19:29:20

Paddle2See wrote:
I would like higher order arrays...but we must remember that Scratch's first goal is to be approachable to beginners. You can always construct an indexing formula so that a 2D array can be stored in a 1D array.

Example:

If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number

Great thinking, and simple too; this will make my Swap 'Ems project much easier.

Still, it would be nice to have support for 2D arrays. (Simpler to edit, more beginner-friendly)

Aidan · 2010-06-17 19:33:09

Harakou wrote:
Paddle2See wrote:
I would like higher order arrays...but we must remember that Scratch's first goal is to be approachable to beginners. You can always construct an indexing formula so that a 2D array can be stored in a 1D array.

Example:

If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number
Great thinking, and simple too; this will make my Swap 'Ems project much easier.

Still, it would be nice to have support for 2D arrays. (Simpler to edit, more beginner-friendly)

*cough*Necropost*cough*

Harakou · 2010-06-17 22:37:12

Aidan wrote:
Harakou wrote:
Paddle2See wrote:
I would like higher order arrays...but we must remember that Scratch's first goal is to be approachable to beginners. You can always construct an indexing formula so that a 2D array can be stored in a 1D array.

Example:

If you want to store a 2D array with rows that are 9 elements long in a 1D list then the formula might be

Item_Number = (Row_Number-1) * 9 + Column_Number
Great thinking, and simple too; this will make my Swap 'Ems project much easier.

Still, it would be nice to have support for 2D arrays. (Simpler to edit, more beginner-friendly)
*cough*Necropost*cough*

Lol, I noticed that right after I posted it. I have a tendency to do that.

juststickman · 2010-06-18 03:56:35

Perfect, there is a very easy way to do this....
Add a list to a list (BYOB).

But I'm not sure how it would be displayed if not that.

This would be perfect for tile based games big_smile

The-Whiz · 2010-06-18 16:43:44

juststickman wrote:
Perfect, there is a very easy way to do this....
Add a list to a list (BYOB).

But I'm not sure how it would be displayed if not that.

This would be perfect for tile based games

Yeah, but notice that this was posted 7 months ago...

Scratch

archived forums

#1 2009-11-16 22:18:48

2-D Arrays

Code:

Code:

#2 2009-11-16 22:40:46

Re: 2-D Arrays

#3 2009-11-16 23:40:01

Re: 2-D Arrays

#4 2009-11-16 23:42:21

Re: 2-D Arrays

#5 2009-11-16 23:48:32

Re: 2-D Arrays

#6 2009-11-17 01:26:25

Re: 2-D Arrays

#7 2009-11-17 07:02:08

Re: 2-D Arrays

#8 2009-11-17 14:58:16

Re: 2-D Arrays

#9 2009-11-17 15:05:07

Re: 2-D Arrays

#10 2009-11-17 16:59:05

Re: 2-D Arrays

#11 2009-11-18 01:44:10

Re: 2-D Arrays

floatingmagictree wrote:

#12 2009-11-18 05:40:33

Re: 2-D Arrays

#13 2009-11-18 06:55:20

Re: 2-D Arrays

Chrischb wrote:

floatingmagictree wrote:

#14 2009-11-18 07:20:39

Re: 2-D Arrays

Paddle2See wrote:

#15 2009-11-18 17:38:42

Re: 2-D Arrays

Paddle2See wrote:

#16 2009-11-18 18:47:06

Re: 2-D Arrays

#17 2009-11-18 20:04:08

Re: 2-D Arrays

#18 2009-11-19 15:12:39

Re: 2-D Arrays

samurai768 wrote:

#19 2009-11-23 05:38:14

Re: 2-D Arrays

#20 2009-11-23 06:33:14

Re: 2-D Arrays

#21 2010-06-17 19:29:20

Re: 2-D Arrays

Paddle2See wrote:

#22 2010-06-17 19:33:09

Re: 2-D Arrays

Harakou wrote:

Paddle2See wrote:

#23 2010-06-17 22:37:12

Re: 2-D Arrays

Aidan wrote:

Harakou wrote:

Paddle2See wrote:

#24 2010-06-18 03:56:35

Re: 2-D Arrays

#25 2010-06-18 16:43:44

Re: 2-D Arrays

juststickman wrote:

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