Using LocalScripts instead of Tools [ROBLOX]

-- Using LocalScripts instead of Tools/HopperBins
-- By EmeraldSlash, 16/11/15

--[[
Hello! Do you like creating HopperBins/Tools with functions like 'KeyDown' and 'Button1Down'?
I find that tools look unprofessional, and can be annoying at times. To fix this, I am making a guide on creating the same abilities - except with LocalScripts!

Here is the hierarchy of the following example:

Workspace
StarterGui
etc.
StarterPack
    HopperBin
        Script
    LocalScript

This is the script inside the HopperBin:

vvvvvvvvvvvvvvvvvvvvvvvvvvv
local tool = script.Parent
local char = tool.Parent

function gen(m)
    local part = Instance.new("Part",game.Workspace)
    local p = game.Players:GetPlayerFromCharacter(char)
    part.Name = p.Name.. "Part"
    part.CFrame = CFrame.new(m.Hit + Vector3.new(0,2,0),char.Head.Position)
    part.Size = Vector3.new(3,3,3)
    part.BrickColor = p.TeamColor
    part.Transparency = 0.5
    print("Generating part.")
end

function delete()
    local part = game.Workspace:FindFirstChild(char.Name.. "Part")
    if part then
        part:Destroy()
    else
        print("Part not found.")
    end
end

local using = false

tool.Selected:connect(function(mouse)
    mouse.Button1Down:connect(function()
        if using == false then
            using = true
            gen(mouse.Hit)
        end
    end)
    mouse.Button2Down:connect(function()
        if using == true then
            delete()
            wait(5)
            using = false
        end
    end)
end)
^^^^^^^^^^^^^^^^^^^^^^^^^^

This script will generate a part where the player clicks, the part facing the player. When the player right clicks, the part removes itself.
Now I will change this to a LocalSript:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
local p = game.Players.LocalPLayer
repeat wait() until p.Character
local char = p.Character
local mouse = p:GetMouse

function gen(m)
    local part = Instance.new("Part",game.Workspace)
    part.Name = p.Name.. "Part"
    part.CFrame = CFrame.new(m.Hit + Vector3.new(0,2,0),char.Head.Position)
    part.Size = Vector3.new(3,3,3)
    part.BrickColor = p.TeamColor
    part.Transparency = 0.5
    print("Generating part.")
end

function delete()
    local part = game.Workspace:FindFirstChild(char.Name.. "Part")
    if part then
        part:Destroy()
    else
        print("Part not found.")
    end
end

local using = false

mouse.Button1Down:connect(function()
    if using == false then
        using = true
        gen(mouse.Hit)
    end
end)

mouse.Button2Down:connect(function()
    if using == true then
        delete()
        wait(5)
        using = false
    end
end)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

As you can see, there are very few actual changes. The biggest changes are:
- The variables are defined differently at the start
- LocalScripts can not be 'selected' or 'deselected', so I just forgot that. You can program that, though.

The following is all in a LocalScript.

This is how you detect keys:

Version 1 (this form of key detection is deprecated):

http://wiki.roblox.com/index.php?title=KeyDown

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
local p = game.Players.LocalPlayer
local mouse = p:GetMouse()

mouse.KeyDown:connect(function(key)
    key = key:lower() -- so the key can be lowercase
    if key == "f" then
        print("'F' was pressed!")
    end
end)
^^^^^^^^^^^^^^^^^^^^^^^^
Version 2 (a lot better, cross platform):

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

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
local context = game:GetService("ContextActionService")

function doStuff()
    print("'F' was pressed!")
end

context:BindAction("ActionName",doStuff,false,"f")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
To explain about this service:

:BindAction:
    argument 1 - the name of your action
    argument 2 - function that you will call, do not put '()' at the end
    argument 3 - whether it will create a button on a mobile device
    argument 4 - the key that you press to activate it
:UnbindAction:
    argument 1 - the name of the action that you want to unbind

That's the basics of ContextActionService. If you need an example of a comparison between LocalScript and HopperBin/Tool, PM me on ROBLOX.

Hope I helped :)
--]]