Data types in macromedia director

[untaljose]

Hello, I have to use data types with macromedia director and I don't
know how can I do it.
I want to simulate a matrix. I do it with lists but it does'nt work:

cell = [integer,integer]
column = [cell,cell,cell,cell,cell,cell,cell,cell,cell,cell]
matrix = [column,column,column,column,column,column,column,c olumn,column,column]

Thanks,

Untaljose.

[Andrew Morton]

> I want to simulate a matrix. I do it with lists but it does'nt work:

In what way does it not work?
Incidentally, you can use the point(x, y) data structure to hold two variables.

Andrew

[EdMX]

There's no reason why this should not work. In fact if you open a new movie and
put this code into a movie script:

global cell, column, matrix

on startmovie
cell = [1,0]
column = [cell,cell,cell,cell,cell,cell,cell,cell,cell,cell]
matrix =
[column,column,column,column,column,column,column,c olumn,column,column]
end

then run the movie - Then open the message window and type:

put matrix

you will see your lovely nested array in perfect order.

This means your problem is probably the way you've written the code that sets
the arrays up and populates them. This is understandable as lingos array
handling methods are hideously vebose and easy to get wrong.

The solution is to break down the code you use to make your arrays into very
small steps - dont try to do too much in one line of code - and test the value
of your arrays at each stage (by putting the results in the message window or
using the object inspector) this way you can isolate the process that is
causing the trouble and (hopefully) fix it.

[Andrew Morton]

Maybe the OP needs to discover the duplicate() function?

Andrew

[klgc]

If you want to see an example of using lists for matrices and a simple recursive solution technique then see:

[url]http://www.director-online.com/buildArticle.php?id=1132[/url]

[untaljose]

"Andrew Morton" <co.uk.invalid> wrote in message news:<c78g0s$kuc$macromedia.com>... 

How can I take the value of a cell?
I have the next code to prove my matrix:

global cell,column,matrix
on mouseup
matrix [1][8][1] = 1
if matrix [1][8][1] then
alert "funciona"
end if
end

This code compiles but when I execute it, the next message appears:

script error: Object expected

matrix[1][8][1]=1

and I have not idea why it occurs!

Thanks a lot for your help,

~untaljose

[Andrew]

It sounds like you haven't initialized the list "matrix".
Try this to create a 10x10 zero matrix of points:-

-------------------------------------
global matrix

on createZeroMatrix
cell=[0,0]
column=[]
matrix=[]
repeat with i=1 to 10
add column, duplicate(cell)
end repeat
repeat with i=1 to 10
add matrix, duplicate(column)
end repeat
end createZeroMatrix
-------------------------------------

-- Welcome to Director

createZeroMatrix()
put matrix
-- [[[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0,
0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0],
[0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0,
0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0],
[0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0,
0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0],
[0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0,
0], [0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0],
[0, 0], [0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0,
0], [0, 0], [0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0],
[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]]]
matrix[5][2][1]=1
put matrix[5][2]
-- [1, 0]

Andrew