How do I check if a key has been pressed two times in a certain period of time?

Help and Feedback Scripting Support
#1

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!
    I want to check if the key W has been pressed 2 times within a certain period of time.
  2. What is the issue? Include screenshots / videos if possible!
    I don’t know how to do it.
  3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    I don’t know how to attempt this.

I’m not asking for a script. However, what is a simple and an efficient way to do it?
Thank you

2 Likes
#2

I know you asked for a way to do it and not necessarily the script itself, but I have no idea how I would describe the script so I just created it below. It should work.

local UIS = game:GetService("UserInputService")
local LastPress = 0
local CertainPeriodOfTime = 60 -- seconds
UIS.InputBegan:Connect(function(key)
 if key.KeyCode = Enum.KeyCode.W then
  if os.time() - LastPress < CertainPeriodOfTime then
   --Then the user has pressed W twice in the period of time
  end
  LastPress = os.time()
 end
end)
4 Likes
How do I make a script detect if a button was pressed a second time?
#3

Inside the user input function, check if a variable is true or false. If it is false, set it to true, wait X seconds, then set it to false. If it is true, meaning the player has clicked it twice in X seconds, execute the code you want to.

#4

I’d advise using tick() rather than os.time() for this, as it allows decimals which is much more accurate and consistent for smaller times.

#5

This is a pretty simple solution, simply get the time that the first time they press w, then subtract is by the second time:

local UIS = game:GetService("UserInputService")

local PreviousInput = 0 -- Sets the variable even before anything is pressed to shorten code
local TimeThreshold = 1 -- The time to detect 2 "w" keys pressed down

UIS.InputBegan:Connect(function(Key)
    if Key.KeyCode == Enum.KeyCode.W then
        if tick() - PreviousInput <= TimeThreshold then -- Checks if the current time subtracted by the previous time is smaller or equal to the TimeThreshold
            -- do something
        end
    else
        PreviousInput = tick() -- Makes it the current time
    end
end)
3 Likes
#6

PreviousInput should have been set to 0 at the start of the game, otherwise the user could simply press W once when the game starts and have tick() - PreviousInput be less than TimeThreshold.

2 Likes
#7

I know this is a little late, but wouldn’t this work also?? Assuming the wait() is the amount of time you wanna wait between clicks if it should work. For this I just made it so it’s double tap to sprint.

local char = script.Parent
local hum = char:WaitForChild("Humanoid")
local uis = game:GetService("UserInputService")
local canSprint = false

uis.InputBegan:Connect(function(key)
	if key.KeyCode == Enum.KeyCode.W and canSprint == false then
		canSprint = true
		wait(0.4)
		canSprint = false
	elseif key.KeyCode == Enum.KeyCode.W and canSprint == true then
		hum.WalkSpeed = 50
	end
end)

uis.InputEnded:Connect(function(key)
	if key.KeyCode == Enum.KeyCode.W and canSprint == false then
		hum.WalkSpeed = 16
	elseif key.KeyCode == Enum.KeyCode.W and canSprint == true then
		hum.WalkSpeed = 50
	end
end)