Main For The Piano

PianoSoundRange = 75
KeyAesthetics = true -- the keys visually press down - why would you want to disable this?

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---------PIANO CONNECTION---------
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------------VARIABLES-------------
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User = nil

Bound = script.Parent.Keys.KeyBound
CameraCFrame = CFrame.new(
	(Bound.CFrame * CFrame.new(0, 5, 3)).p, -- +z is towards player
	(Bound.CFrame * CFrame.new(0, 1, 1)).p
	)

Connector = game.Workspace:FindFirstChild("GlobalPianoConnector")
if not Connector or not Connector:IsA("RemoteEvent") then
	error("The piano requires a RemoteEvent named GlobalPianoConnector to be in Workspace.")
end

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------------FUNCTIONS-------------
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function Receive(player, action, a, b)
	if player == User and action == "play" then
		if KeyAesthetics then
			HighlightPianoKey(a)
		end
		Connector:FireAllClients("play", a, Bound.Position, User, PianoSoundRange)
	elseif player == User and action == "abort" then
		Deactivate()
		if SeatWeld then
			SeatWeld:remove()
		end
	end
end
function Activate(player)
	Connector:FireClient(player, "activate", CameraCFrame)
	User = player
end
function Deactivate()
	Connector:FireClient(User, "deactivate")
	User = nil
end

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-----------CONNECTIONS------------
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Connector.OnServerEvent:connect(Receive)

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----------SEAT MECHANISM----------
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------------VARIABLES-------------
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Seat = script.Parent.Bench.Seat
SeatWeld = nil


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------------FUNCTIONS-------------
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function WeldChanged(property)
	if property == "Parent" and SeatWeld.Parent == nil then
		SeatWeld = nil
		Deactivate()
		BreakSeatConnections()
	end
end
function ChildAdded(child)
	if child:IsA("Weld") then
		local root = child.Part1
		local character = root.Parent
		local player = game.Players:GetPlayerFromCharacter(character)
		if player then
			SeatWeld = child
			Activate(player)
			MakeSeatConnections()
		end
	end
end

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-----------CONNECTIONS------------
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SeatWeldConnection = nil

function MakeSeatConnections()
	SeatWeldConnection = SeatWeld.Changed:connect(WeldChanged)
end
function BreakSeatConnections()
	SeatWeldConnection:disconnect()
end

Seat.ChildAdded:connect(ChildAdded)

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------------AESTHETICS------------
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------------VARIABLES-------------
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Keys = script.Parent.Keys

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------------FUNCTIONS-------------
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function IsBlack(note)
	if note%12 == 2 or note%12 == 4 or note%12 == 7 or note%12 == 9 or note%12 == 11 then
		return true
	end
end

function HighlightPianoKey(note1)
	--print("highlight!")
	local octave = math.ceil(note1/12)
	local note2 = (note1 - 1)%12 + 1
	local key = Keys[octave][note2]
	if IsBlack(note1) then
		key.Mesh.Offset = Vector3.new(0.02, -0.15, 0)
	else
		key.Mesh.Offset = Vector3.new(0, -.05, 0)
	end
	delay(.5, function() RestorePianoKey(note1) end)
end
function RestorePianoKey(note1)
	local octave = math.ceil(note1/12)
	local note2 = (note1 - 1)%12 + 1
	local key = Keys[octave][note2]
	if IsBlack(note1) then
		key.Mesh.Offset = Vector3.new(0.02, -0.1, 0)
	else
		key.Mesh.Offset = Vector3.new(0, 0, 0)
	end
end