i am trying to make a script that when you c press a button you get teleported but it doesnt work? [closed]

Making this because I thought the first response was kind sloppy

local player=game.Players.LocalPlayer
local char=player.Character
--services
local UserInput=game:GetService("UserInputService")

flag=false
UserInput.InputBegan:connect(function(input,gameProcessed)
    if gameProcessed then return end
    if input.KeyCode==Enum.KeyCode.C and not flag then
        flag=true
        local root=char:FindFirstChild("HumanoidRootPart")
        if root~=nil then
            root.Position=Vector3.new(0,0,0) --Position of teleport end
        end
        wait(8)
        flag=false
    end
end)

local a = false
local plr = game.Players.LocalPlayer
local UserInputService = game:GetService("UserInputService")
local b = plr.Torso.position

UserInputService.InputBegan:connect(function(input,gameProccesedEvent)
 if input.Keycode == Enum.KeyCode.F then 
print("F") 
b = b + Vector3.new(-15,0,0) 
local a = true
 end
 end)

The reason it doesn't work is because you are declaring the variable B to be the position of the torso located inside the local player, and then you are changing the variable. You are not changing the position of the torso itself. Also, you might want to update your code to use plr.Character.Torso instead of plr.Torso.

Now that we have done that, you might notice that only your torso changes position, and the rest of your body doesn't move along. You can fix this by setting the CFrame of the Torso to a new CFrame instead of a new Vector3.

If you implement all of these changes, your code could look a bit like this.

local a = false
local plr = game.Players.LocalPlayer
local UserInputService = game:GetService("UserInputService")
local b = (plr.Character or plr.CharacterAdded:Wait()):WaitForChild('Torso').Position
UserInputService.InputBegan:Connect(function(input, gameProccesedEvent)
    if input.KeyCode == Enum.KeyCode.F then
        print("F")
        b = b + Vector3.new(-15,0,0,0) -- Dunno why you used 4 arguments tbh
        plr.Character.Torso.CFrame = CFrame.new(b)
        local a = true
    end
end)

If you paste this in a localscript and test it, you will teleport to a location in mid-air, with the location changing by 15 studs each time you teleport. If I had to guess, this is not your intention, so you can fix this by setting the Torso's CFrame to the Torso's CFrame, and then adding Vector3.new(-15, 0, 0).

Your code should look a bit like this now.

local a = false
local plr = game.Players.LocalPlayer
local UserInputService = game:GetService("UserInputService")
UserInputService.InputBegan:Connect(function(input, gameProccesedEvent)
    if input.KeyCode == Enum.KeyCode.F then
        print("F")
        plr.Character.Torso.CFrame = plr.Character.Torso.CFrame + Vector3.new(-15, 0, 0)
        local a = true
    end
end)

This can error if the player does not have a character containing a Torso, of a character for that matter, so you can add a simple check before teleporting that will check if the player has a character, and if so, if the character has a torso.

If you paste this in a localscript, it'll perfectly do as expected: each time you press F, you get teleported -15 studs on the X axis. However, if you press F while typing in chat, you will also get teleported. To fix this, we will make use of ContextActionService instead of UserInputService.

We'll start off by calling ContextActionService:BindAction, and we'll give the following parameters: Action name as a string, for example 'Teleport', the function to execute, true/false depending on if you want to create buttons for the action(I believe this is for mobile, but I haven't played around with that yet), and then all the inputs you want.

This might look like this:

local ContextActionService = game:GetService('ContextActionService')

ContextActionService:BindAction(
    'Teleport',
    function(Action, State, Input)

    end,
    true,
    Enum.KeyCode.F
)

You can mostly reuse the function used for UserInputService, but we need to make a few a change to make it work as expected: ContextActionService activates both when one if the given keys is pressed and released. In this case, if you either press or release F, the function will fire. To solve this, you need to check if State == Enum.UserInputState.Begin. You also won't need to check if Input.KeyCode == Enum.KeyCode.F, so you can just swap these 2.

If you implement all of this, your code should look this this

local a = false
local plr = game.Players.LocalPlayer
local ContextActionService = game:GetService("ContextActionService")
ContextActionService:BindAction(
    'Teleport',
    function(Action, State, Input)
        if not plr.Character then return end
        if not plr.Character:FindFirstChild('Torso') then return end

        if State == Enum.UserInputState.Begin then
            print("F")
            plr.Character.Torso.CFrame = plr.Character.Torso.CFrame + Vector3.new(-15, 0, 0)
            local a = true
        end
    end,
    true,
    Enum.KeyCode.F
)

If you paste this inside a localscript and test it, you'll see that you won't teleport when typing in chat, but you will teleport when pressing F not in chat.

Now that all this is done, there is still 1 thing I'd like to change about this code, and that is the fact that we're using the Torso, and not the HumanoidRootPart. In your own game you might only use R6 characters, but if you want to use this in a different game that does not only have R6 characters it'll simply do nothing when the player has a R15 character. I recommend that you swap out all the Torso's with HumanoidRootPart, and then this should be fixed.