How To Do Admin Commands

Help and Feedback Scripting Support
#1

How are you suppose to use the various string functions to create admin commands?

How do you figure out which player/value is being referred to in a piece of text?

Any helpful sources?

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#2

This is probably the best resource to start with:
https://www.robloxdev.com/api-reference/event/Player/Chatted

#3

I recommend working with the Lua chat system over any other method of listening to chat messages, as it provides a pretty nice interface for affecting both the game and the output chat messages.
https://www.robloxdev.com/articles/Lua-Chat-System

You can create Command Functions that will swallow messages that meet a command format, and execute code on the server. The link above has a nice example for how these work. In my game I create a table of command functions that I then register with ChatService in a loop.

You can also create Filter Functions that can affect the appearance and content of a chat message (ie. message color, text). I have a decent example of a Filter Function here: https://www.roblox.com/library/653695817/Color-Chat-and-Admin-List

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#4

Is there a source of how to use string patterns?

#5

String patterns in Lua are yikes, but here are some resources I’ve used.

https://www.lua.org/pil/20.2.html
https://www.fhug.org.uk/wiki/wiki/doku.php?id=plugins:understanding_lua_patterns

Why do you need complex patterns?

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#6

I need a way to split up a command string

for example

"set ninja900500 level 500"

I need to split that up into 4 parts

#7

I use this code for one of my commands. Doesn’t need to be complicated.
(%S+) matches a word, and (.+) matches anything from that point onwards.

local a,b,playerName,property,value = string.find(message, "/cmd (%S+) (%S+) (.+)")
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#8

If you want to have simple admin commands you can match out the command itself and then match out the arguments and do something like this

if funcs[cmd] then
    ran,returns = pcall(funcs[cmd],sender,unpack(args))
end

and an example command could be

funcs.kill = function(sender,target)
    if isList(target) then
        local targets = listify(target)
        for _,playername in next,targets do
            killByName(playername)
        end
    else
        killByName(target)
    end
end
#9

Tutorial I made a while ago. Might be helpful :wink:

1 Like