1. apireference
2. input
3. userinputservice

GetKeysPressed

Returns

Code Samples

Double Jump Key Combo

This example demonstrates how to use the UserInputService/GetKeysPressed function to create a combo action where the player double jumps when the the player presses actionKey key (Left Shift) + Jump key (Spacebar).

The actionKey variable indicates which key, combined with the Jump key, needs to be pressed for the player to double jump.

When the player presses the Jump key, the UserInputService/JumpRequest|JumpRequest event is invoked, which is connected to the script’s jumpRequest function. If the Left Shift key is pressed and the player is not already in the middle of a jump, this function sets the canDoubleJump boolean to true.

The example connects the stateChanged function to the Humanoid/StateChanged|StateChanged event so that the function fires when their Enum/HumanoidStateType|humanoid’s state changes. If the state changes from Jumping to Freefall, and the canDoubleJump boolean is true, the function makes the player jump again by setting their humanoid’s state back to Jumping using the Humanoid/ChangeState|ChangeState function
.
The example also uses the canJump boolean variable to determine when the player is in the middle of a jump. Without this variable, the player could press the actionKey + Jump Key (spacebar) to jump endlessly without landing. When the boolean is true, the player is not jumping. If the player is not jumping, jumpRequest() checks if the actionKey is pressed and sets canJump to false. When the player lands, stateChanged() sets the variable to true.

local UserInputService = game:GetService("UserInputService")

local Players = game.Players
local player = Players.LocalPlayer
local character = player.Character
local humanoid = character:WaitForChild("Humanoid")

local actionKey = Enum.KeyCode.LeftShift
local canJump = true
local canDoubleJump = false

local function jumpRequest()
	local keysPressed = UserInputService:GetKeysPressed()
	for _, key in ipairs(keysPressed) do
		if (key.KeyCode == actionKey and canJump) then
			canJump = false
			canDoubleJump = true
		end
	end
end

local function stateChanged(oldState, newState)
	-- Double jump during freefall if able to
	if (oldState == Enum.HumanoidStateType.Jumping and newState == Enum.HumanoidStateType.Freefall and canDoubleJump) then
		canDoubleJump = false
		wait(.2)
		humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
	end
	
	-- Allow player to jump again after they land
	if (oldState == Enum.HumanoidStateType.Freefall and newState == Enum.HumanoidStateType.Landed) then
		canJump = true
	end
end

UserInputService.JumpRequest:Connect(jumpRequest)
humanoid.StateChanged:Connect(stateChanged)