Requirements: Skript and Skript-Mirror 2.0
Tested on: 1.8.8, 1.13.2, 1.14.4
Difficulty: Semi-Basic/Complex

This is a small tutorial on how to create a toplist with Skript based on a couple expressions made in skript-mirror.

The skript-mirror expressions / sorting algorithm:

Code (Skript):

1. import:
2.     java.util.ArrayList
3.     java.util.Collections
4.     java.util.Map$Entry
5.     ch.njol.skript.variables.Variables
6.  
7. expression replace values %strings% with %strings% in %string%:
8.     get:
9.         set {_string} to expression-3
10.         loop expressions-1:
11.             add 1 to {_index}
12.             replace all "%loop-value%" with "%{_index}th element of expressions-2%" in {_string}
13.         return {_string}
14.  
15. plural expression [the] (1¦(highest|top)|2¦(lowest|last)) %integer% values of %objects% [formatted] as %string%:
16.     get:
17.         set {_list} to new ArrayList(Variables.getVariable(raw expressions-2.getName().toString(event), event, raw expressions-2.isLocal()).entrySet())
18.         {_list}.sort(Entry.comparingByValue())
19.         if parse mark = 1:
20.             Collections.reverse({_list})
21.         loop ...{_list}:
22.             "%loop-value.getValue()%" is not "0"
23.             add 1 to {_index}
24.             set {_sorted::%{_index}%} to replace values "@place", "@index" and "@value" with "%{_index}%", "%loop-value.getKey()%" and "%loop-value.getValue()%" in expression-3
25.             {_index} = expression-1
26.             stop loop
27.         return {_sorted::*}

These expressions will allow us to make toplists. The syntax is not that hard to use and it uses a very efficient sorting algorithm. It is much faster than anything you can really make with vanilla Skript. I did some testing and this algorithm can sort up to 50,000 values in one second!

You may be thinking, what are "@place" and "@index" and "@value" in this list. @place represents what place the value is in, for example, first place or second place. @index represents the key. For example, in a toplist, the key would be the player name or UUID. @value represents the value. For example, if a toplist was based on kills, it would be the amount of kills the player has.

Note: it is recommended to make an auto-updator for leaderboards and not update it every time they use a command. Player's that spam a command like this could crash the server! This is just an example.
Example toplist #1 ( Top Kills based on {Kills::*} ):

Code (Skript):

1. command /topkillers:
2.     trigger:
3.         set {_topKillers::*} to the highest (size of {Kills::*}) values of {Kills::*} as "&e@place. &b@index &7- &6@value"
4.         message "&eTop Killers"
5.         loop {_topkillers::*}:
6.             message loop-value
7.             #if loop-index is "10":
8.             #    stop loop

This toplist example will sort everything in {Kills::*} from highest to lowest.

Note: it is recommended to make an auto-updator for leaderboards and not update it every time they use a command. Player's that spam a command like this could crash the server! This is just an example.
Example toplist #2 ( Top Kills based on {Kills::*}, 10 displayed per page )

Code (Skript):

1. command /topkillers [<integer=1>]:
2.     trigger:
3.  
4.         # Example amount to show per page. In this example, its 10
5.         set {_showPerPage} to 10
6.         set {_toSortTo} to arg 1 * {_showPerPage}
7.  
8.         set {_topKillers::*} to the highest {_toSortTo} values of {Kills::*} as "&e@place. &b@index &7- Kills: &6@value"
9.         message "&eTop Killers Page %arg 1%"
10.         loop {_topkillers::*}:
11.             if ("%loop-index%" parsed as integer) is between {_toSortTo} - ({_showPerPage} - 1) and {_toSortTo}:
12.                 message loop-value

This toplist example will set values until a certain point (more efficient than sorting all unless you need to). This toplist uses a page system.

Picture Example of toplist #2:

I could add a few more examples but I should have given you enough info to get started on your own. Good luck with your toplists!

Credits: EWS (I didn't originally make this method of sorting. I edited the original version from Mirrorutils and also showed how to use it.)

 

While it is originally from Mirrorutils, I will simply state that it was originally from Mirrorutils but I am not saying that you need it as a requirement. This is a standalone piece of code that was edited and credit was given.

 

What version of Spigot and Skript are you using? The syntax is from Skript 2.0+
https://skripthub.net/docs/?id=942

 

Try using skript 2.2-dev36 as it is the most recent working version for 1.8.8. You can find it here:
https://github.com/SkriptLang/Skript/releases/download/dev36/Skript.jar
I have tested this on 1.8.8 with that Skript version so it should work.

 

I don't know what to say then. It works for me perfectly when I use those versions. Maybe someone else can clarify it.

I actually just checked my Skript version on my 1.8.8 server and it said it was a custom version. I don't know if that makes a difference or not but you can try this one instead: https://drive.google.com/file/d/1hkiAHyGb9mGixiOVC5qehytr4QGZCRww/view

Also I just made sure again, and sure enough it works fine on that version.