--[[
	Author: 12GaugeNick
	File-Type: LocalScript
]]
wait()

-- Setup --

local MaxBars		= 63
local Height 		= 40
local cRot			= 1

local Bars			= {}
local Tweens		= {}

local Floor			= math.floor
local Max			= math.max
local Rad			= math.rad
local Sine			= math.sin -- (Yes, it is actually sine)
local Cos			= math.cos
local Ceil			= math.ceil
local Pi			= math.pi

local Players		= game:GetService("Players")
local AssetService	= game:GetService("ContentProvider")
local RunService	= game:GetService("RunService")
local ServerStorage	= game:GetService("ServerStorage")

local Player 		= Players.LocalPlayer
local RootPart		= function(...) return(Player.Character:WaitForChild("HumanoidRootPart")) end -- The reason I didnt go with Torso, is because its R6 & R15 compatable now :)

local LastAssetId	= 0000000
local CurrentSong 	= nil
local Skip			= false

local AudioIds		= {
	1067739984,
	657338681,
	173125494,
	208566959,
	189553619,
	212377911,
	172511451,
	182098010
}

-- Functions --

local function HueCycle(num)
	local Sec 		= num % 1 * 3
	local Secondary = 0.5 * Pi * (Sec%1)
	if Sec < 1 then
		return 1, 1 - Cos(Secondary), 1 - Sine(Secondary)
	elseif Sec < 2 then
		return 1 - Sine(Secondary), 1, 1 - Cos(Secondary)
	else
		return 1 - Cos(Secondary), 1 - Sine(Secondary), 1
	end
end

local function Create(Ins, Table)
	local Obj = Instance.new(Ins)
	for a,b in next,Table do
		Obj[a] = b
	end
	return Obj
end

local PlaySong = function(AssetId)
	Sound:Stop()
	Sound.SoundId = "rbxassetid://"..tostring(AssetId)
	AssetService:Preload("rbxassetid://"..tostring(AssetId))
	Sound:Play()
	repeat wait() until (Sound.TimeLength~=0)
	return Sound.TimeLength
end

local getNextSong = function()
	return AudioIds[1]
end

-- Create the sound --

local StartSpectrum = function()
	Sound = Create("Sound",{                         -- Keep this from being a 'local' because then our PlaySong function can find it :)
		SoundId = "rbxassetid://508162596",
		Volume = 10,
		Looped = true,
		Parent = RootPart()
	})

	-- Create the bars --

	SoundBar = Create("Model",{
		Name = "SoundBar",
		Parent = Player.Character
	})

	for Int = 0,MaxBars do
		local Piece = Create("Part",{
			Name = tostring(Int),
			Size = Vector3.new(0.5, 0.2, 0.5),
			Anchored = true,
			CanCollide = false,
			BottomSurface = Enum.SurfaceType.Smooth,
			TopSurface = Enum.SurfaceType.Smooth,
			Material = 'Neon',
			Parent = SoundBar,
		})
		local Mesh = Create("SpecialMesh",{
			MeshId = "rbxassetid://9856898",
			Scale = Vector3.new(1, 0.400000006, 1),
			TextureId = "rbxassetid://2114473",
			MeshType = Enum.MeshType.FileMesh,
			Parent = Piece,
		})
		table.insert(Bars, Piece)
	end
end;StartSpectrum()

SoundBar.Changed:connect(function()
	if SoundBar.Parent == nil or (not SoundBar) then
		StartSpectrum()
	end
end)

-- Easing functions --
local function quadIn(t,b,c,d)
	t=t/d;
	return c*t*t+b;
end;
local function quadOut(t,b,c,d)
	t=t/d;
	return -c*t*(t-2)+b;
end;
local function Quad(obj,val,ease,d)
	local t,f,con,nt,st,sd=tick()
	Tweens[obj]=t -- Set identifier
	st=obj.Scale.Y -- Start Value
	sd=val-st -- Change in Value
	f=ease=='In' and quadIn or quadOut -- Choose between Out/In
	con=game:GetService'RunService'.RenderStepped:connect(function() nt=tick()-t
		if Tweens[obj]~=t then -- Check for override
			con:disconnect()
			return
		end
		local nv=math.max(.2,f(math.min(d,nt),st,sd,d)) -- New Value
		obj.Scale=Vector3.new(.9,nv,.9)
		obj.Offset=Vector3.new(0,nv/4,0)
		obj.VertexColor = Vector3.new(HueCycle(tick())):lerp(Vector3.new(1,1,1),nv/Height)
		if nt>d then -- Easing done?
			con:disconnect()
			if ease~='In' then
				Quad(obj,.2,'In',.3) -- Drop the bar
			end
		end
	end)
end

-- Manipulation of the bars --
-- (Both of these need to be NOT LOCALIZED)
local function CheckSet(N,S,D) -- Number, Scale, Direction
	local nS=SoundBar[tostring(N)].Mesh.Scale.Y
	if S>nS then
		Set(N,nS+(S-nS)/3,D)
	end
end

function Set(N,S,D) -- Number, Scale, Direction
	Quad(SoundBar[tostring(N)].Mesh,S,'Out',.1) -- Grabs the bar and tweens
	if N>0 and D~=1 then -- Checks left for smaller bars to manipulate
		CheckSet(N-1,S,-1)
	end
	if N<(#Bars-1) and D~=-1 then -- Checks right...
		CheckSet(N+1,S,1)
	end
end


-- Move all the bars / make spectrum --
local MPL,PL,curr = 0
curr=Sound.SoundId
spawn(function()
	RunService.RenderStepped:connect(function()
		PL=Sound.PlaybackLoudness
		if Sound.IsPlaying and PL==PL then
			if curr~=Sound.SoundId then
				MPL=0
				curr=Sound.SoundId
			end
			MPL=Max(PL,MPL)
			PL=PL/MPL
			if PL==PL then
				Set(Floor(PL*(#Bars-1)),PL*Height)
			end
		end
	end)
end)

-- (This just makes all the bars move)
spawn(function()
	RunService.RenderStepped:connect(function()
		if SoundBar.Parent ~= nil then
			for Index,Part in next,Bars do
				Part.CFrame = CFrame.new(Player.Character:WaitForChild("HumanoidRootPart").CFrame.p)
				*CFrame.Angles(0, Rad((360/#Bars*Index+(tick()*2)*60/(#Bars ~= 0 and #Bars or 1))%360), 0)
				*CFrame.new(0, -3, (#Bars*.35) + Part.Size.X)
				*CFrame.Angles(0,90,0)
			end
		end
	end)
end)

-- Chatted function --
Player.Chatted:connect(function(Message)
	if Message:lower():sub(0,3) == "/e " then
		Message = Message:sub(4)
	end
	if Message:lower():sub(0,4) == "play" then
		local Int = Message:sub(5)
		if #Int >= 6 then
			PlaySong(tonumber(Int))
		end
	elseif Message:lower():sub(0,4) == "skip" then
		Skip = true
	end
end)

-- Create the lovely playlist -- ( Extra feature added by 12GaugeNick :D )
while wait() do
	for _,v in next,AudioIds do
		Skip = false
		local Delay = PlaySong(v)
		for i = 1,Delay,1 do
			if Skip == true then
				break
			end
			wait(1)
		end
	end
end