Why does this script work?

Help and Feedback Scripting Support
#1

How does this script work? I’ve had it laying around for a while and never understood how/why it worked.

repeat wait() until game.Players.LocalPlayer
m = game.Players.LocalPlayer:GetMouse()
m.KeyDown:connect(function(key)
	if key == "0" then 
		print("Running")
		game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 20
	end
end)
m.KeyUp:connect(function(key)
	if key == "0" then
		game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 14
	end
end)

What this script does is that it is a shift to sprint script, created by IronPhoenix_YT. As you can see, the script NEVER references shift.This was a LocalScript made to be in the StarterGUI.
EDIT: If shift is “0” then how do you find other key’s codes?

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#2

If you print the key variable then when you press shift is says it is “0”, no idea why it prints that but i think thats how it functions

so i think when the key isnt a - z. it is a number instead

so 0 = shift

you can probably find other numbers of keycodes just by printing the key you press

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#3

this is because you inputted “0”, referencing the number 0, which is not shift. you should change the key from 0 to “shift”.

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#4

The issue was that it does work If you change it to “LeftShift” it doesn’t work.

#5

In your case left shift is "304"
find more about key code numbers here: KeyCode | Roblox Creator Documentation

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#6

But if you change the “0” to “304” it doesn’t work anymore. Also, why did 0 ever work in the first place?

#7

the 0 value is unknown input

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image902×83 3.22 KB

you can use user input service instead, like in the example below

local uis = game:GetService("UserInputService")

uis.InputBegan:Connect(function(input, gameProcessed)
	--if gameProcessed then return end --/// if you are using keycodes like shift or others (esc, left shift, etc.) you can delete this, but it will also fire if player is typing
	--
	if input.UserInputType == Enum.UserInputType.Keyboard then
		if input.KeyCode == Enum.KeyCode.LeftShift then
			print("left shift pressed!")
		end
	end
end)

put it into a local script (in starter gui or starter player scripts)

for holding and not holding use

local uis = game:GetService("UserInputService")

uis.InputBegan:Connect(function(input, gameProcessed)
	--if gameProcessed then return end --/// if you are using keycodes like shift or others (esc, left shift, etc.) you can delete this, but it will also fire if player is typing
	--
	if input.UserInputType == Enum.UserInputType.Keyboard then
		if input.KeyCode == Enum.KeyCode.LeftShift then
			print("left shift is now being holded")
		end
	end
end)

uis.InputEnded:Connect(function(input, gameProcessed)
	--if gameProcessed then return end --/// if you are using keycodes like shift or others (esc, left shift, etc.) you can delete this, but it will also fire if player is typing
	--
	if input.UserInputType == Enum.UserInputType.Keyboard then
		if input.KeyCode == Enum.KeyCode.LeftShift then
			print("left shift is now not being holded")
		end
	end
end)
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