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inputluaroblox

Roblox Lua run script when key pressed and you are a certain distance away

I am trying to make a script in Roblox so that if you are 20 studs away and you press E it will bring up an NPC Dialog. It is being run inside a LocalScript. For the moment I just have it displaying a message when you press E, however it won't display the message.

local HumanoidRootPart = game.Players.LocalPlayer:WaitForChild("HumanoidRootPart")
local UserInputService = game:GetService("UserInputService")
local part = game.workspace.TableBox.TableTop

UserInputService.InputBegan:connect(function(keyCode)
    if keyCode.keyCode == Enum.KeyCode.E then
        if (part.Position - HumanoidRootPart.Position).magnitude < 20 then
            print("E has been pressed")
        end
    end
end)

I am also getting this error in the output(in orange):

Infinite yield possible on 'Players.icrann:WaitForChild("HumanoidRootPart")'

I expect local HumanoidRootPart = game.Players.LocalPlayer.Character:WaitForChild("HumanoidRootPart") to work, but it ends up bring up the error:

Players.icrann.PlayerScripts.Script:1: attempt to index field 'Character' (a nil value)

And also when I play the game my character in the explorer looks like this:

Explorer

Solution 
  • local HumanoidRootPart = game:GetService("Players").LocalPlayer:WaitForChild("HumanoidRootPart") --It is .LocalPlayer, cuz localplayer is the player on that client
local UserInputService = game:GetService("UserInputService")
local part = workspace.TableBox.TableTop

UserInputService.InputBegan:connect(function(keyCode)
    print(HumanoidRootPart.Position)
    if keyCode.keyCode == Enum.KeyCode.E and (part.Position - HumanoidRootPart.Position).magnitude <= 20 then
        print("E has been pressed")
    end
end)