Increasing an array count? - GameCreators Forum

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Darkzombies

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Joined: 25th Dec 2010

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Posted: 15th Nov 2011 02:48

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So I was just wondering, how should I change an arrays amount. Should I do something like this (It doesnt work anyways)

+ Code Snippet

type tex
    x
    y
    value as string
endtype

dim texts() as tex

do
    inc AmountOfText
    text 250, 250, str$(array count(texts(0)))
    UpdateArrays()
loop

function UpdateArrays()
    undim texts(0)
    dim texts(AmountOfText) as tex
endfunction

Or just set a max amount?

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Hodgey

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Location: Australia

Posted: 15th Nov 2011 03:15

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One reason it might not work is because AmountofText isn't global hence in the function it is always equal to 0. I don't think you need the undim command to increase the array count size. Just call redeclare it as an array using Dim but with the new amount. Like this:

+ Code Snippet

dim array(5) as integer

for n = 1 to 5
    array(n) = n
    print array(n)
next n

print 
print
print

// increase the arrays size
dim array(10) as integer

for n = 1 to 10
    array(n) = n^2
    print array(n)
next n

wait key
end

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Darkzombies

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Posted: 15th Nov 2011 03:39

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Oh ok I see.

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WickedX

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Posted: 15th Nov 2011 03:45

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This is probable the simplest solution to that problem.

+ Code Snippet

type tex
   x
   y
   value as string
endtype

dim texts() as tex

do

   set cursor 0, 0
   array insert at bottom texts()
   print array count(texts())," "
   wait 1000

loop

end

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nonZero

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Posted: 15th Nov 2011 07:17

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WickedXGames is right. If you UNDIM and then DIM an array again, it looses all its stored data. That is the purpose of ARRAY INSERT AT TOP, ARRAY INSERT AT BOTTOM, etc. You should browse the CORE COMMANDS in DBPROs help. At 3/4 of the way down you'll find some very useful commands for manipulating arrays.

Round Phoenix Software Studios

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Rudolpho

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Posted: 17th Nov 2011 02:12

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Re-dimensioning retains all previous values (except, I suppose, if you reduce its size instead of increasing it):

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dim array(3)
    array(0) = 0
    array(1) = 1
    array(2) = 2
    array(3) = 3
printArray()

// Re-dimension it
dim array(6)
    array(4) = 4
    array(5) = 5
    array(6) = 6
printArray()

wait key
end

function printArray()
    for e = 0 to array count(array())
        print "array["; e; "] == "; array(e)
    next e
    print ""    // Empty line
endfunction

"Why do programmers get Halloween and Christmas mixed up?"

+ Code Snippet

Because Oct(31) = Dec(25)

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nonZero

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Posted: 17th Nov 2011 11:07

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Quote: " Re-dimensioning retains all previous values (except, I suppose, if you reduce its size instead of increasing it): "

I didn't realise you could directly redimension arrays like that in DBPro. I actually looked for a "REDIM" equivalent which didn't seem to be present in DBPro so I turned to ARRAY INSERT AT TOP/BOTTOM instead (situation dependent). I'm sure this'll come in handy though, as "DIM xzy(n)" is less to type than "ARRAY INSERT AT BOTTOM xzy(n), n"

Round Phoenix Software Studios

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