Question about array size of an Integer variable

MP®

Member
Reaction score
11
Hey I just discovered that when you have an integer variable with array size 1, you can still use for example "IntegerVar[2]" or [3] etc etc.. I always thought that when you want more layers, you need a bigger array size? How can this be possible? Can someone explain this to me? :)
 

jnZ

I
Reaction score
64
it doesnt matter at all which size you select for an array.

that only affects the variable initialization in the map script.
 

MP®

Member
Reaction score
11
What do you mean with the variable initialization in the map script?
 

Accname

2D-Graphics enthusiast
Reaction score
1,463
The array size doesnt matter for any "simple" variable kinds like integer, strings, units, etc.

The only instances in which it does matter are variables which need to be initialized before you can properly use them.
For example, unit groups.

If you have a unit group array variable, lets call it Temp_Group[] and you set its array size to 1, then you can still do:
Code:
set Temp_Group[5] = All units of Type SOME_UNIT_TYPE
However, you can NOT do:
Code:
Unit Group - Add SOME_UNIT to Temp_Group[5]
Because there is no unit group at position 5. It wasnt initialized.

But you can do:
Code:
set Temp_Group[5] = All units of Type (unit type of No Unit)
Code:
Unit Group - Add SOME_UNIT to Temp_Group[5]
Because in the first line you create an empty group with no units inside, and set it to be the Temp_Group[5] and in the second line you can then add units to this group as if it was initialized.

But if you set the array size to be at least 6 right from the beginning you could just add units to the group regardless. (unless you have destroyed it at some other point in time.)
 

jnZ

I
Reaction score
64
you know the default value you can select when creating variables right? basically when you create a regular integer variable called TESTINT with the default value (0), a line in the mapscript is "set udg_TESTINT = 0" obviously if you change the default value to 1 it would say "set udg_TESTINT = 1".

So when you create an integer array with the size of 6 and default value 1 the following lines appear in the mapscript

set i = 0
loop
exitwhen i > 5
set udg_TESTINT = 1
set i = i + 1
endloop

as you can see, by setting the array size TESTINT [0] to TESTINT[5] will be set to 1
 

Happy

Well-Known Member
Reaction score
71
It's like Accname said...but beside from that it not good to set all array variables to the highest amount possible because 1. the loading time gets longer and 2. if your size of all arrays exceed a certain limit all your triggers dont work anymore.
 

MP®

Member
Reaction score
11
Ok thank you very much all, that is pretty clear!

So just to be sure: I can just set all array sizes of Integer Variables (which I use A LOT) to 1? And it will automatically create more layers when needed?

And if I have like 12 players and I use array size 1, It will eventually create a size of 12 when I use Array = Number of Player? So It eventually becomes the same as when I at initialization already have 12 by setting the array size?
 

vypur85

Hibernate
Reaction score
803
In short, Integer is fine if you don't set anything.

Unit group, Player group, and Timer are few examples that require specific array value upon initialisation.
 
General chit-chat
Help Users
  • No one is chatting at the moment.
  • Monovertex Monovertex:
    Hmm, how do I change my signature?
  • tom_mai78101 tom_mai78101:
    Signatures can be edit in your account profile. As for the old stuffs, I'm thinking it's because Blizzard is now under Microsoft, and because of Microsoft Xbox going the way it is, it's dreadful.
  • The Helper The Helper:
    I am not big on the recipes I am just promoting them - I use the site as a practice place promoting stuff
    +2
  • Monovertex Monovertex:
    @tom_mai78101 I must be blind. If I go on my profile I don't see any area to edit the signature; If I go to account details (settings) I don't see any signature area either.
  • The Helper The Helper:
    You can get there if you click the bell icon (alerts) and choose preferences from the bottom, signature will be in the menu on the left there https://www.thehelper.net/account/preferences
  • The Helper The Helper:
    I think I need to split the Sci/Tech news forum into 2 one for Science and one for Tech but I am hating all the moving of posts I would have to do
  • The Helper The Helper:
    What is up Old Mountain Shadow?
  • The Helper The Helper:
    Happy Thursday!
    +1
  • Varine Varine:
    Crazy how much 3d printing has come in the last few years. Sad that it's not as easily modifiable though
  • Varine Varine:
    I bought an Ender 3 during the pandemic and tinkered with it all the time. Just bought a Sovol, not as easy. I'm trying to make it use a different nozzle because I have a fuck ton of Volcanos, and they use what is basically a modified volcano that is just a smidge longer, and almost every part on this thing needs to be redone to make it work
  • Varine Varine:
    Luckily I have a 3d printer for that, I guess. But it's ridiculous. The regular volcanos are 21mm, these Sovol versions are about 23.5mm
  • Varine Varine:
    So, 2.5mm longer. But the thing that measures the bed is about 1.5mm above the nozzle, so if I swap it with a volcano then I'm 1mm behind it. So cool, new bracket to swap that, but THEN the fan shroud to direct air at the part is ALSO going to be .5mm to low, and so I need to redo that, but by doing that it is a little bit off where it should be blowing and it's throwing it at the heating block instead of the part, and fuck man
  • Varine Varine:
    I didn't realize they designed this entire thing to NOT be modded. I would have just got a fucking Bambu if I knew that, the whole point was I could fuck with this. And no one else makes shit for Sovol so I have to go through them, and they have... interesting pricing models. So I have a new extruder altogether that I'm taking apart and going to just design a whole new one to use my nozzles. Dumb design.
  • Varine Varine:
    Can't just buy a new heatblock, you need to get a whole hotend - so block, heater cartridge, thermistor, heatbreak, and nozzle. And they put this fucking paste in there so I can't take the thermistor or cartridge out with any ease, that's 30 dollars. Or you can get the whole extrudor with the direct driver AND that heatblock for like 50, but you still can't get any of it to come apart
  • Varine Varine:
    Partsbuilt has individual parts I found but they're expensive. I think I can get bits swapped around and make this work with generic shit though
  • Ghan Ghan:
    Heard Houston got hit pretty bad by storms last night. Hope all is well with TH.
  • The Helper The Helper:
    Power back on finally - all is good here no damage
    +2
  • V-SNES V-SNES:
    Happy Friday!
    +1
  • The Helper The Helper:
    New recipe is another summer dessert Berry and Peach Cheesecake - https://www.thehelper.net/threads/recipe-berry-and-peach-cheesecake.194169/
  • The Helper The Helper:
    I think we need to add something to the bottom of the front page that shows the Headline News forum that has a link to go to the News Forum Index so people can see there is more news. Do you guys see what I am saying, lets say you read all the articles on the front page and you get to the end and it just ends, no kind of link for MOAR!
  • The Helper The Helper:
    Happy Wednesday!
    +1

      The Helper Discord

      Members online

      No members online now.

      Affiliates

      Hive Workshop NUON Dome World Editor Tutorials

      Network Sponsors

      Apex Steel Pipe - Buys and sells Steel Pipe.
      Top