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The difference between UserInputService and ContextActionService?

Asked by
ProgramsMan 100
8 years ago

What is the difference between the two, and in what situations is it best to use one over the other?

2 answers

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4
Answered by
Strykebyte 45
8 years ago

The UserInputService can bind functions to user input via events such as "InputBegan", for example:

view source
01local UIS = game:GetService("UserInputService")
02local plr = game.Players.LocalPlayer
03    local char = plr.Character
04    local hum = char.Humanoid
05 
06function superJump(inputObject, GPE)
07    if inputObject.KeyCode == Enum.KeyCode.U then
08        hum.JumpPower = 150
09        print("Super jump!")
10    end
11end
12 
13UIS.InputBegan:connect(superJump)

As for the ContextActionService, it can bind a SET of inputs to a function, additionally it can create GUI buttons on mobile for compatibility.

For example:

view source
01local CAS = game:GetService("ContextActionService")
02    local plr = game.Players.LocalPlayer
03    local char = plr.Character
04    local hum = char.Humanoid
05 
06function speedUp(actionName, userInputState, inputObject)
07    if userInputState == Enum.UserInputState.Begin then
08        print("RUNNING!!!")
09        hum.WalkSpeed = 100
10    end
11end
12 
13CAS:BindAction("speedingUp", speedUp, false, Enum.KeyCode.Y)

Also, a function bound through BindAction can be fired on all changes of the input's state, whether it began, ended, or changed.

Personally, if I were beginning keyboard input, I would go with the UserInputService for simplicity!

http://wiki.roblox.com/index.php?title=API:Class/UserInputService http://wiki.roblox.com/index.php?title=API:Class/ContextActionService

0
so with userinputservice, i use a specific input value (lets say the letter y) to do something for me, its the same with contextaction but it can unbind y under a condition, or bind something else under a condition? ProgramsMan 100 — 8y
0
Basically, I don't know too much about the CAS Strykebyte 45 — 8y
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Answered by
Cesire 45
8 years ago
Edited 8 years ago

ContextActionService can bind/unbind keybinds. UserInputService does the exact same thing as ContextActionService, exept that it cannot bind/unbind.

If you have a keyboard-press activated door, it's best to use ContextActionService, since you can bind a button to the door when you're close to it, instead of all the time.

If you want to have a quick respawn button, it's best to use UserInputService since you probably want to have the quick respawn feature active all the time.

http://wiki.roblox.com/index.php?title=API:Class/ContextActionService http://wiki.roblox.com/index.php?title=API:Class/UserInputService

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