How to detect if a player presses a key? [Answered!]

Easy, first you can get a local script because of the Local Player(MUCH MUCH MUCH MUCH Easier that way, like 500x easier) then we have to get the mouse using :GetMouse() to get the players mouse. The player's mouse has an event called the KeyDown event. This event fires when a player presses a key. The parameters can represent the key you have pressed. We can find out what key we pressed by using an if statement. You can find out a key the player presses by using either string.byte or, because the key is a string, we can see what key it is that way.

---

Get player from a local script.

local player = game.Players.LocalPlayer --simple

---

Get mouse from player

local player = game.Players.LocalPlayer
local mouse = player:GetMouse() --Also pretty simple.

---

Use the keydown event:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.KeyDown:connect(function()
	print("Pressed a key.")
end)

---

Get the key the player has pressed:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.KeyDown:connect(function(key)
	print("Pressed: "..key)
end)

---

Find out what key the player has pressed:

There are multiple ways of doing this.

1.) The string.byte way:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.KeyDown:connect(function(key)
	if key:byte() == 32 then --Since you cannot type [[key == "Space"]] just use byte.
		print("Pressed space")
	end
end)

2.) Regular way

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.KeyDown:connect(function(key)
	if key == "e" then
		print("Pressed e")
	end
end)

3.) And the Regular way plus string.lower() or string.upper()

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.KeyDown:connect(function(key)
	if key:lower() == "e" or key:upper() == "E" then
		print("Pressed e or E")
	end
end)

---

---

KeyDown is not recommended to be used, use Keyboard input instead.

To use this it's easy,(Can be in normal script in workspace or something.)

game:GetService("UserInputService").InputBegan:connect(function(inputObject, gameProcessedEvent)
	if inputObject.KeyCode == Enum.KeyCode.R then --Also, could be written as [[inputObject.KeyCode == "R"]]
		print("R was pressed")
	end 
end)

Just use the userimputservice which also has other cool features like an event fires if someone on a touchscreen device pinches the screen it fires.

---

---

If you are using keydown still and is wanting to know how do I know that 32 is space? I got it off of this roblox wiki page. Look under the "DEC" column. http://wiki.roblox.com/index.php?title=File:Ascii_Table.png

---

Hope this helps!