Rainbow cape

if game:GetService("RunService"):IsClient() then error("Script must be server-side in order to work; use h/ and not hl/") end
local Player,game,owner = owner,game
local RealPlayer = Player
do
    print("FE Compatibility code by Mokiros | Showcase by Bacon Hair!")
    local rp = RealPlayer
    script.Parent = rp.Character

    --RemoteEvent for communicating
    local Event = Instance.new("RemoteEvent")
    Event.Name = "UserInput_Event"

    --Fake event to make stuff like Mouse.KeyDown work
    local function fakeEvent()
        local t = {_fakeEvent=true,Functions={},Connect=function(self,f)table.insert(self.Functions,f) end}
        t.connect = t.Connect
        return t
    end

    --Creating fake input objects with fake variables
    local m = {Target=nil,Hit=CFrame.new(),KeyUp=fakeEvent(),KeyDown=fakeEvent(),Button1Up=fakeEvent(),Button1Down=fakeEvent()}
    local UIS = {InputBegan=fakeEvent(),InputEnded=fakeEvent()}
    local CAS = {Actions={},BindAction=function(self,name,fun,touch,...)
        CAS.Actions[name] = fun and {Name=name,Function=fun,Keys={...}} or nil
    end}
    --Merged 2 functions into one by checking amount of arguments
    CAS.UnbindAction = CAS.BindAction

    --This function will trigger the events that have been :Connect()'ed
    local function te(self,ev,...)
        local t = m[ev]
        if t and t._fakeEvent then
            for _,f in pairs(t.Functions) do
                f(...)
            end
        end
    end
    m.TrigEvent = te
    UIS.TrigEvent = te

    Event.OnServerEvent:Connect(function(plr,io)
        if plr~=rp then return end
        m.Target = io.Target
        m.Hit = io.Hit
        if not io.isMouse then
            local b = io.UserInputState == Enum.UserInputState.Begin
            if io.UserInputType == Enum.UserInputType.MouseButton1 then
                return m:TrigEvent(b and "Button1Down" or "Button1Up")
            end
            for _,t in pairs(CAS.Actions) do
                for _,k in pairs(t.Keys) do
                    if k==io.KeyCode then
                        t.Function(t.Name,io.UserInputState,io)
                    end
                end
            end
            m:TrigEvent(b and "KeyDown" or "KeyUp",io.KeyCode.Name:lower())
            UIS:TrigEvent(b and "InputBegan" or "InputEnded",io,false)
        end
    end)
    Event.Parent = NLS([==[
    local Player = game:GetService("Players").LocalPlayer
    local Event = script:WaitForChild("UserInput_Event")

    local Mouse = Player:GetMouse()
    local UIS = game:GetService("UserInputService")
    local input = function(io,a)
        if a then return end
        --Since InputObject is a client-side instance, we create and pass table instead
        Event:FireServer({KeyCode=io.KeyCode,UserInputType=io.UserInputType,UserInputState=io.UserInputState,Hit=Mouse.Hit,Target=Mouse.Target})
    end
    UIS.InputBegan:Connect(input)
    UIS.InputEnded:Connect(input)

    local h,t
    --Give the server mouse data 30 times every second, but only if the values changed
    --If player is not moving their mouse, client won't fire events
    while wait(1/30) do
        if h~=Mouse.Hit or t~=Mouse.Target then
            h,t=Mouse.Hit,Mouse.Target
            Event:FireServer({isMouse=true,Target=t,Hit=h})
        end
    end]==],Player.Character)

    ----Sandboxed game object that allows the usage of client-side methods and services
    --Real game object
    local _rg = game

    --Metatable for fake service
    local fsmt = {
        __index = function(self,k)
            local s = rawget(self,"_RealService")
            if s then return s[k] end
        end,
        __newindex = function(self,k,v)
            local s = rawget(self,"_RealService")
            if s then s[k]=v end
        end,
        __call = function(self,...)
            local s = rawget(self,"_RealService")
            if s then return s(...) end
        end
    }
    local function FakeService(t,RealService)
        t._RealService = typeof(RealService)=="string" and _rg:GetService(RealService) or RealService
        return setmetatable(t,fsmt)
    end

    --Fake game object
    local g = {
        GetService = function(self,s)
            return self[s]
        end,
        Players = FakeService({
            LocalPlayer = FakeService({GetMouse=function(self)return m end},Player)
        },"Players"),
        UserInputService = FakeService(UIS,"UserInputService"),
        ContextActionService = FakeService(CAS,"ContextActionService"),
    }
    rawset(g.Players,"localPlayer",g.Players.LocalPlayer)
    g.service = g.GetService

    g.RunService = FakeService({
        RenderStepped = _rg:GetService("RunService").Heartbeat,
        BindToRenderStep = function(self,name,_,fun)

        end,
        UnbindFromRenderStep = function(self,name)
            self._btrs[name]:Disconnect()
        end,
    },"RunService")

    setmetatable(g,{
        __index=function(self,s)
            return _rg:GetService(s) or typeof(_rg[s])=="function"
            and function(_,...)return _rg[s](_rg,...)end or _rg[s]
        end,
        __newindex = fsmt.__newindex,
        __call = fsmt.__call
    })
    --Changing owner to fake player object to support owner:GetMouse()
    game,owner = g,g.Players.LocalPlayer
end
local verlet = {}
verlet.step_time = 1 / 50
verlet.gravity = Vector3.new(0, -10, 0)

local char = game.Players.LocalPlayer.Character
local torso = char:WaitForChild("Torso")
local parts = {}
local render = game:GetService("RunService").RenderStepped

wait(2)

local point = {}
local link = {}
local rope = {}

local function ccw(A,B,C)
    return (C.y-A.y) * (B.x-A.x) > (B.y-A.y) * (C.x-A.x)
end

local function intersect(A,B,C,D)
    return ccw(A,C,D) ~= ccw(B,C,D) and ccw(A,B,C) ~= ccw(A,B,D)
end

local function vec2(v)
	return Vector2.new(v.x, v.z)
end

function point:step()
	if not self.fixed then
		local derivative = (self.position - self.last_position) * 0.95
		self.last_position = self.position
		self.position = self.position + derivative + (self.velocity * verlet.step_time ^ 2)
		--[[local torsoP = torso.CFrame * CFrame.new(-1, 0, 0.5)
		local torsoE = torso.CFrame * CFrame.new(1, 0, 0.5)
		local pointE = self.position + torso.CFrame.lookVector * 100
		local doIntersect = intersect(vec2(torsoP.p), vec2(torsoE.p), vec2(self.position), vec2(pointE))
		if not doIntersect then
			self.postition = self.position - torso.CFrame.lookVector * 10
		end]]
	end
end

function link:step()
	for i = 1, 1 do
		local distance = self.point1.position - self.point2.position
		local magnitude = distance.magnitude
		local differance = (self.length - magnitude) / magnitude
		local translation = ((self.point1.fixed or self.point2.fixed) and 1 or 0.6) * distance * differance
		if not self.point1.fixed then
			self.point1.position = self.point1.position + translation
		end
		if not self.point2.fixed then
			self.point2.position = self.point2.position - translation
		end
	end
end

function verlet.new(class, a, b, c)
	if class == "Point" then
		local new = {}
		setmetatable(new, {__index = point})
		new.class = class
		new.position = a or Vector3.new()
		new.last_position = new.position
		new.velocity = verlet.gravity
		new.fixed = false
		return new
	elseif class == "Link" then
		local new = {}
		setmetatable(new, {__index = link})
		new.class = class
		new.point1 = a
		new.point2 = b
		new.length = c or (a.position - b.position).magnitude
		return new
	elseif class == "Rope" then
		local new = {}
		setmetatable(new, {__index = link})
		new.class = class
		new.start_point = a
		new.finish_point = b
		new.points = {}
		new.links = {}
		local inc = (b - a) / 10
		for i = 0, 10 do
			table.insert(new.points, verlet.new("Point", a + (i * inc)))
		end
		for i = 2, #new.points do
			table.insert(new.links, verlet.new("Link", new.points[i - 1], new.points[i]))
		end
		return new
	end
end

local tris = {}
local triParts = {}

local function GetDiscoColor(hue)
 local section = hue % 1 * 3
 local secondary = 0.5 * math.pi * (section % 1)
 if section < 1 then
  return Color3.new(1, 1 - math.cos(secondary), 1 - math.sin(secondary))
 elseif section < 2 then
  return Color3.new(1 - math.sin(secondary), 1, 1 - math.cos(secondary))
 else
  return Color3.new(1 - math.cos(secondary), 1 - math.sin(secondary), 1)
 end
end

local function setupPart(part)
	part.Anchored = true
	part.FormFactor = 3
	part.CanCollide = false
	part.TopSurface = 10
	part.BottomSurface = 10
	part.LeftSurface = 10
	part.RightSurface = 10
	part.FrontSurface = 10
	part.BackSurface = 10
	part.Material = "Neon"
	local m = Instance.new("SpecialMesh", part)
	m.MeshType = "Wedge"
	m.Scale = Vector3.new(0.2, 1, 1)
	return part
end

local function CFrameFromTopBack(at, top, back)
	local right = top:Cross(back)
	return CFrame.new(at.x, at.y, at.z, right.x, top.x, back.x,  right.y, top.y, back.y, right.z, top.z, back.z)
end

local function drawTri(parent, a, b, c)
	local this = {}
	local mPart1 = table.remove(triParts, 1) or setupPart(Instance.new("Part"))
	local mPart2 = table.remove(triParts, 1) or setupPart(Instance.new("Part"))
	function this:Set(a, b, c)
		local ab, bc, ca = b-a, c-b, a-c
		local abm, bcm, cam = ab.magnitude, bc.magnitude, ca.magnitude
		local edg1 = math.abs(0.5 + ca:Dot(ab)/(abm*abm))
		local edg2 = math.abs(0.5 + ab:Dot(bc)/(bcm*bcm))
		local edg3 = math.abs(0.5 + bc:Dot(ca)/(cam*cam))
		if edg1 < edg2 then
			if edg1 >= edg3 then
				a, b, c = c, a, b
				ab, bc, ca = ca, ab, bc
				abm = cam
			end
		else
			if edg2 < edg3 then
				a, b, c = b, c, a
				ab, bc, ca = bc, ca, ab
				abm = bcm
			else
				a, b, c = c, a, b
				ab, bc, ca = ca, ab, bc
				abm = cam
			end
		end

		local len1 = -ca:Dot(ab)/abm
		local len2 = abm - len1
		local width = (ca + ab.unit*len1).magnitude

		local maincf = CFrameFromTopBack(a, ab:Cross(bc).unit, -ab.unit)

		if len1 > 0.2 then
			mPart1.Parent = parent
			mPart1.Size = Vector3.new(0.2, width, len1)
			mPart1.CFrame = maincf*CFrame.Angles(math.pi,0,math.pi/2)*CFrame.new(0,width/2,len1/2)
		else
			mPart1.Parent = nil
		end

		if len2 > 0.2 then
			mPart2.Parent = parent
			mPart2.Size = Vector3.new(0.2, width, len2)
			mPart2.CFrame = maincf*CFrame.Angles(math.pi,math.pi,-math.pi/2)*CFrame.new(0,width/2,-len1 - len2/2)
		else
			mPart2.Parent = nil
		end
	end
	function this:SetProperty(prop, value)
		mPart1[prop] = value
		mPart2[prop] = value
	end
	this:Set(a, b, c)
	function this:Destroy()
		mPart1:Destroy()
		mPart2:Destroy()
	end
	this.p1 = mPart1
	this.p2 = mPart2
	this.p1.BrickColor = BrickColor.new(GetDiscoColor(math.noise(0.5, 0.5, this.p1.CFrame.Y * 0.5 + time())))
	this.p2.BrickColor = BrickColor.new(GetDiscoColor(math.noise(0.5, 0.5, this.p2.CFrame.Y * 0.5 + time())))
	return this
end

function verlet.draw(object, id)
	if object.class == "Point" then
		local part = parts[id]
		part.BrickColor = BrickColor.new(1, 1, 1)
		part.Transparency = 0
		part.formFactor = 3
		part.Anchored = true
		part.CanCollide = false
		part.TopSurface = 0
		part.BottomSurface = 0
		part.Size = Vector3.new(0.35, 0.35, 0.35)
		part.Material = "Neon"
		part.CFrame = CFrame.new(object.position)
		part.Parent = torso
		return part
	elseif object.class == "Link" then
		local part = parts[id]
		local dist = (object.point1.position - object.point2.position).magnitude
		part.Size = Vector3.new(0.2, 0.2, dist)
		part.CFrame = CFrame.new(object.point1.position, object.point2.position) * CFrame.new(0, 0, dist * -0.5)
		part.Parent = torso
		return part
	end
end

function verlet.clear()
	for _, v in pairs(workspace:GetChildren()) do
		if v.Name == "Part" then
			v:Destroy()
		end
	end
end

local points = {}
local links = {}

for x = 0, 2 do
	points[x] = {}
	for y = 0, 3 do
		points[x][y] = verlet.new("Point", torso.Position + Vector3.new(x * 0.8 - 2, 2 - y * 0.8, 5 + y * 0.4))
		points[x][y].fixed = y == 0
	end
end

for x = 1, 2 do
	for y = 0, 3 do
		links[#links + 1] = verlet.new("Link", points[x][y], points[x - 1][y], 1 + y * 0.08)
	end
end

for x = 0, 2 do
	for y = 1, 3 do
		links[#links + 1] = verlet.new("Link", points[x][y], points[x][y - 1], 1.2 + y * 0.03)
	end
end

render:connect(function()
	for x = 0, 2 do
		for y = 0, 3 do
			if y == 0 then
				points[x][y].position = (torso.CFrame * CFrame.new(x * 1 - 1, 1, 0.5)).p
			else
				points[x][y]:step()
			end
		end
	end
	for i = 1, #links do
		links[i]:step()
	end
	for i = 1, #tris do
		triParts[#triParts + 1] = tris[i].p1
		triParts[#triParts + 1] = tris[i].p2
	end
	tris = {}
	for x = 1, 2 do
		for y = 1, 3 do
			tris[#tris + 1] = drawTri(torso, points[x - 1][y - 1].position, points[x - 1][y].position, points[x][y - 1].position)
			tris[#tris + 1] = drawTri(torso, points[x][y].position, points[x - 1][y].position, points[x][y - 1].position)
		end
	end
end)