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How do I select a key from a table and use it in a function?

Asked by
buoyantair 123
9 years ago

Hi guys, I want to make a commands script, so when you chat something, you get the appropriate result.

I is really time consuming if I check weather the message chatted by player is the command or not, writing 3 lines of code for each command! D:

How do I write it more efficiently? I though of using a table which contains commands and the relative subjects.

Here's my table. It changes faces

local Faces = {
        Smile = "http://www.roblox.com/asset/?id=7137738",
        AngryMin = "http://www.roblox.com/asset/?id=7079958",
        AngryMid = "http://www.roblox.com/asset/?id=7137750",
        AngryMax = "http://www.roblox.com/asset/?id=7604619",
        Kind = "http://www.roblox.com/asset/?id=7604617",
        HappyMin = "http://www.roblox.com/asset/?id=7079953",
        HappyMax = "http://www.roblox.com/asset/?id=7604621"
    }

and then, Here's my script... | It changes player's face.

local function changeFace(face) -- local because upon this there is a player added function. player.Character.Head.face.Texture = face end

player.Chatted:connect(function(message)
        for i = 1, #Faces do
            if message == #Faces[i] then
                changeFace(#Faces[i])
            end
        end
    end)

end)

How do I fix this thing? I am new to tables and for loops, So please help me.

Thankyou.

0
You should look up String Manipulation in Roblox Wiki. I'd help but I myself need to study that more before I give information that could be wrong! alphawolvess 1784 — 9y

1 answer

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0
Answered by
yumtaste 476 Moderation Voter
9 years ago

I think you're doing it just a little bit wrong.

I'm not sure if your table format is wrong, but I don't recognize it, so I'm just going to rewrite it as a dictionary.

local Faces = {
        "Smile" =["http://www.roblox.com/asset/?id=7137738"],
        "AngryMin" = ["http://www.roblox.com/asset/?id=7079958"],
        "AngryMid" = ["http://www.roblox.com/asset/?id=7137750"],
        "AngryMax" =[ "http://www.roblox.com/asset/?id=7604619"],
        "Kind" = ["http://www.roblox.com/asset/?id=7604617"],
        "HappyMin" = ["http://www.roblox.com/asset/?id=7079953"],
        "HappyMax" = ["http://www.roblox.com/asset/?id=7604621"]
    }
~~~~~~~~~~~~~~~~~\

Notice the differences between your table and my dictionary. Your table has variables with a string as a value, mine have variables named with a string, with string values. It's a little complicated to understand, but the Chatted() event doesn't work with your table unless you use `tostring(variable)`. Since the variables in your table aren't named with strings, you can't use the Chatted() event with them without `tostring(variable)`.

Now to edit your for loop.

player.Chatted:connect(function(message) for faceName, faceId in pairs(Faces) do --this is how you use for loops with a dictionary if message == faceName then --checking if the message matches the name of a face in the table changeFace(faceId) --changes the face end end end) ~~~~~~~~~~~~~~~~~

I just modified your for loop to work with the dictionary. Basically, your only problem that I saw was that you tried to compare string with a userdata value. Just try my code and see if it works. Thanks!

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