Disabling specific movement keys

Pythoicus · July 18, 2018, 6:24pm

For my game, I need to completely disable the W and S keys, so players can only move to the left or right, and jump. All I’ve been able to do so far is disable movement altogether, but I can’t figure out how to disable specific keys.

Kampfkarren · July 18, 2018, 6:32pm

This is easy to do because movement is done through core scripts.

github.com

Roblox/Core-Scripts/blob/c40eb19bdd6f2949d66aa020e12b7a6d7d5ffe45/PlayerScripts/StarterPlayerScripts/ControlScript/MasterControl/KeyboardMovement.lua#L110


      
          			rightValue = 0
          		end
          		updateMovement(inputState)
          	end
          	
          	local jumpFunc = function(actionName, inputState, inputObject)
          		MasterControl:SetIsJumping(inputState == Enum.UserInputState.Begin)
          	end
          	
          	-- TODO: remove up and down arrows, these seem unnecessary
          	ContextActionService:BindActionToInputTypes("forwardMovement", moveForwardFunc, false, Enum.PlayerActions.CharacterForward)
          	ContextActionService:BindActionToInputTypes("backwardMovement", moveBackwardFunc, false, Enum.PlayerActions.CharacterBackward)
          	ContextActionService:BindActionToInputTypes("leftMovement", moveLeftFunc, false, Enum.PlayerActions.CharacterLeft)
          	ContextActionService:BindActionToInputTypes("rightMovement", moveRightFunc, false, Enum.PlayerActions.CharacterRight)
          	ContextActionService:BindActionToInputTypes("jumpAction", jumpFunc, false, Enum.PlayerActions.CharacterJump)
          	-- TODO: make sure we check key state before binding to check if key is already down
          	
          	local function onFocusReleased()
          		local humanoid = getHumanoid()
          		if humanoid then
          			MasterControl:AddToPlayerMovement(-currentMoveVector)

Simply run:

ContextActionService:UnbindAction("forwardMovement")
ContextActionService:UnbindAction("backwardMovement")

Pythoicus · July 18, 2018, 6:40pm

Do I need to write a new script containing this, or edit an existing core script?

Kampfkarren · July 18, 2018, 6:49pm

Write a new script.

Pythoicus · July 18, 2018, 6:54pm

Could you please tell me exactly what needs to be in the script, and where the script is supposed to be? I know I’m doing something wrong, but I don’t know what.

Kampfkarren · July 18, 2018, 7:04pm

As long as that’s in a LocalScript, you can use game:GetService("ContextActionService") to get the service I mentioned. Then, when you want to disable movement, run the code I showed.

JustaLatvian · October 11, 2019, 3:46pm

Then how would i bind it back?

colbert2677 · October 11, 2019, 5:33pm

If you have intentions to bind it back, then don’t remove the context binding. What you can do instead is create an action binding with a higher priority for the W and S keys which returns Enum.ContextActionResult.Sink. This will prevent other bindings from running if they have a lower priority.

JustaLatvian · October 12, 2019, 9:44am

Oh, i’ve heard about this, but how would i disable the left/right movement for game pad and mobile using this?

colbert2677 · October 12, 2019, 6:22pm

Gamepads and mobile require a bit of a different process, since they rely on the delta distance of moving a control stick. This may require forking of the control scripts to accomplish.