--if not LocalPlayer():CheckUserGroupLevel("developers") then return end

local mat_screenspace = Material("models/screenspace")
local mdl_dome = Model("models/props_phx/construct/metal_dome360.mdl")
local white = Color(255, 255, 255, 255)

SafeRemoveEntity(fractal_renderer)

local renderer = ClientsideModel(mdl_dome)

local function scale(ent, vec)
    local mat = Matrix()
    mat:Scale(vec)
    ent:EnableMatrix("RenderMultiply", mat)
end

RunConsoleCommand("pp_bloom", "1")
RunConsoleCommand("pp_bloom_passes", "0")
RunConsoleCommand("pp_bloom_multiply", "0")
flomp = flomp or {} local f = flomp
do -- particles


    flomp.emitter = ParticleEmitter(EyePos(), false)
    flomp.emitter:SetNoDraw(true)

    f.FFT = {}
    f.FFT_Size = 1024

    f.FFT_Bass_1 = 0
    f.FFT_Bass_2 = 0

    f.max_volume = 0
    f.scale = 1
    f.eye_angles = Angle(0)
    f.eye_origin = vector_origin
    f.vol_multplier = 1

    f.fft_detail = 10
    f.mul_fft = f.FFT_Size/f.fft_detail

    for i = 1, f.FFT_Size do
        f.FFT[i] = 0
    end

    function flomp.SetSource(var)
        var = type(var) == "number" and Entity(var) or var
        if type(var) == "Vector" or (IsEntity(var) and var:IsValid()) then
            f.source = var
        end
    end

    function flomp.SetScale(n)
        f.scale = n
    end

    function flomp.SetVolumeInputScale(n)
        f.vol_multplier = n
    end

    function flomp.GetSourcePos()
        return type(f.source) == "Vector" and f.source or IsEntity(f.source) and f.source:IsValid() and f.source:EyePos() or vector_origin
    end

    function flomp.GetAverage(istart, iend)
        istart = math.Round(math.Clamp(istart, 1, f.FFT_Size))
        iend = math.Round(math.Clamp(iend, 1, f.FFT_Size))
        local n = 0
        for i=istart, iend do
        --  if f.FFT[i] then
                n = n + f.FFT[i]
    --      end
        end

        local div = (iend - istart)

        return div == 0 and 0 or (n / div)
    end

    function flomp.IsAround(number, min, max)
        return number > min and number < max and true or false
    end

    function flomp.ScaleVolume(volume, peak)
        return ((volume ^ flomp.powscale) * f.vol_multplier) * 2.5
    end

    function flomp.Spectrum2D()
        do return end
        --if bawss and bawss.channel then bawss.channel:stop() bawss = nil end -- declan interuption protection

        local h = ScrH() + -400
        local w = ScrW()
        local volume = 0

        for fr = 1, f.FFT_Size do
            volume = f.ScaleVolume(f.FFT[fr])

            surface.SetDrawColor(volume,volume,255*volume,255)
            surface.DrawLine(
                (w+fr)-ScrW(), h,
                (w+fr)-ScrW(), h-(volume*50)
            )
        end
    end

    local time = 0

    function flomp.SpectrumUpdate(data, peak)
        if flomp.sound_vol == 0 then return end
        f.FFT = data

        f.FFT_Bass_1 = flomp.GetAverage(1, 6)

        time = time + f.FFT_Bass_1 * 50

        for i = 1, 4 do

            local fr = (i * 256)

            local volume = f.ScaleVolume(f.FFT[math.Clamp(math.Round(i*f.mul_fft), 1, f.FFT_Size)], peak)

            if volume < 0.01 then continue end

            local n_fr = -(fr-30) + f.FFT_Size -- negative fr, f.FFT_Size to 0

            local f_fr = (fr-30)/f.FFT_Size -- fraction fr, 0, 1
            local nf_fr = n_fr/f.FFT_Size -- negative fraction, 1, 0

            local max = 32

            for i2 = 1, max do
                local pi = (i2/max) * math.pi * 2

                local size = (f.FFT_Bass_1 * 50 ^ 1.5)
                local color = HSVToColor((time+(pi*volume))%360, 1, 1)

                local velocity = Vector(math.sin(pi+i+time), -volume / 5, math.cos(pi+i+time)) * volume ^ 1.3
                velocity = velocity * 5

                local particle = f.emitter:Add("particle/Particle_Glow_04_Additive", f:GetSourcePos() + (velocity*5*f.scale))

                particle:SetVelocity(velocity*1000*f.scale*5)

                particle:SetLifeTime(0)
                particle:SetDieTime(math.Clamp(volume*0.2, 0.1, 0.8))

                particle:SetStartLength(size*3*f.scale * 2*2)
                particle:SetEndLength(size*1.5*f.scale)
                particle:SetStartSize(size*f.scale*volume*0.5*2)
                particle:SetEndSize(0)

                particle:SetStartAlpha(50)
                particle:SetEndAlpha(0)

                particle:SetAirResistance(math.Clamp((-size+800), 10, 1200)*f.scale)
                --particle:SetGravity((VectorRand()*50)*f.scale)

                particle:SetColor(color.r, color.g, color.b)
                particle:SetCollide(true)
                particle:SetBounce(0.1)
            end
        end
    end

    f.smooth_pp = 0
    f.look_at_mult = 0

    function flomp.DrawPostProcess()
        if flomp.sound_vol == 0 then return end
        local w = ScrW()
        local h = ScrH()

        local vec2 = f.GetSourcePos():ToScreen()

        local m = math.max(f.eye_angles:Forward():DotProduct((f.GetSourcePos()-f.eye_origin):GetNormalized()), 0) ^ 3
        f.look_at_mult = m
        m = m * (f.sound_vol * 2) ^ 2
        m = m / 5

        --m = m * math.Clamp((-f.eye_origin:Distance(f.GetSourcePos()) / 15000) + 1, 0, 1)

        if m < 0.001 then return end

        m = math.Clamp(m, 0, 1)

        local vol = f.FFT_Bass_1
        local darkness = (-m+1)

        local avr = math.Clamp(vol * 2  - 0.1,0,1) * m
        local blur = math.Clamp((vol*-0.5)+1, 0.2, 1)
        local invert = (vol*-10+1)

        local angle = Angle(math.Rand(-1,1), math.Rand(-1,1), math.Rand(-1,1)) * f.GetAverage(3, 7) * m
        angle.x = math.Clamp(angle.p, -0.52, 0.52)
        angle.y = math.Clamp(angle.y, -0.52, 0.52)
        angle.z = 0
        LocalPlayer():SetEyeAngles(LocalPlayer():EyeAngles() + angle)

        f.smooth_pp = f.smooth_pp + ((avr - f.smooth_pp)*FrameTime()*10)

        local mscale = m * f.vol_multplier

        local tbl= {}
        tbl[ "$pp_colour_addr" ] = 0
        tbl[ "$pp_colour_addg" ] = 0
        tbl[ "$pp_colour_addb" ] = 0
        tbl[ "$pp_colour_brightness" ] = -0.02
        tbl[ "$pp_colour_contrast" ] = 1.1-m
        tbl[ "$pp_colour_colour" ] = 1.25+(m^0.75)
        tbl[ "$pp_colour_mulr" ] = 0
        tbl[ "$pp_colour_mulg" ] = 0
        tbl[ "$pp_colour_mulb" ] = 0


        --DrawMotionBlur(blur, 1, 0)
        --DrawBloom(darkness, invert*m, math.max(invert*20+2, 5), math.max(invert*20+10, 5), 4, 10, 1, 1, 1 )
        DrawSunbeams(0.9, math.max(vol/4, 0.1), 0.2, vec2.x / ScrW(), vec2.y / ScrH())
        DrawColorModify(tbl)
        --DrawToyTown(Lerp(avr, 0, 10), ScrH()*0.55)
        DrawSharpen(m*10,m)

        local avr = (flomp.GetAverage(3, 5) * 2.5) ^ 1.5
        flomp.fov = Lerp(avr ^ 1.5, 150, 60)
    end

    hook.Add("HUDPaint", "flomp_Helper", flomp.Spectrum2D)
    hook.Add("RenderScreenspaceEffects", "flomp_RenderScreenspaceEffects", flomp.DrawPostProcess)


    hook.Add("RenderScene", "flomp_CalcView", function(pos, ang)
        f.eye_origin = pos
        f.eye_angles = ang
    end)

    local voldata = Vector(0,0,0) -- V, L, R

    local function calcsource(eye, rgt, src, dist, fwd, vel)
        local vol = math.Clamp(-((eye - src):Length() / dist) + 1, 0, 1)
        local dot = rgt:Dot((src - eye):GetNormalized())

        local left = math.Clamp(-dot, 0, 1) + 0.5
        local right = math.Clamp(dot, 0, 1) + 0.5

        if vol ~= 0 then
            return vol, -left + right
        end
    end

    function GetVolumeData(source, falloff)
        local ply = LocalPlayer()
        return calcsource(ply:EyePos(),f.eye_angles:Right(), source, falloff, f.eye_angles:Forward(), ply:GetVelocity())
    end

    f.sound_vol = 0

    hook.Add("Think","flomp_volume",function()
        local vol, panning = GetVolumeData(flomp.GetSourcePos(), 4000)

        if vol then
            f.sound_vol = vol
            if not f.wowo then vol = vol * f.look_at_mult end

            hook.Call("FlompVolume", GAMEMODE, (vol^1.5)*2, panning)
        else
            hook.Call("FlompVolume", GAMEMODE, 0, 0)
        end
    end)


    hook.Add("HUDPaintBackground", "itsaparty")
    hook.Add("CalcView", "itsaparty")


    local last_peak = 1
    hook.Add("Spectrum", "flomp_spectrum", function(fft)

        local peak = 0

        for k,v in pairs(fft) do
            peak = math.max(peak, v)
            fft[k] = (fft[k] ^ 1.75) * 0.75
        end

        last_peak = 0

        flomp.SpectrumUpdate(fft, peak)
    end)
end

local size = 30

flomp.fov = 75-40
local t = 0
local offset = 6

function renderer:RenderOverride()
    cam.Start3D(EyePos() + (EyeAngles():Right() * offset) + (EyeAngles():Up() * offset), EyeAngles(), (flomp.fov or 0) + 40)
    --self:SetAngles(Angle(90,90, t*50%360))
    render.SuppressEngineLighting(true)
        render.MaterialOverride(mat_screenspace)
        --render.DrawSphere(self:GetPos(), -50, 32, 32, white)

        render.SetBlend(0.9)
        self:SetRenderOrigin(self:GetPos() + self:GetUp() * -size)
        scale(self, Vector(1,1,1) * size)
        self:SetupBones()
        self:DrawModel()

        render.CullMode(MATERIAL_CULLMODE_CW)
        self:SetRenderOrigin(self:GetPos() + self:GetUp() * size)
        scale(self, Vector(1,-1,1) * size)
        self:SetupBones()
        self:DrawModel()
        render.MaterialOverride()
        render.CullMode(MATERIAL_CULLMODE_CCW)

        render.SetBlend(1)

        self:SetRenderOrigin()
    render.SuppressEngineLighting(false)

    flomp.SetSource(self:GetPos())
    cam.End3D()
end

SafeRemoveEntity(fractal_tree)

local tree = ClientsideModel("models/props_combine/combine_bridge.mdl")
tree:SetPos(LocalPlayer():EyePos() + LocalPlayer():GetAimVector() * 20)
timer.Simple(0.1, function()
    function tree:RenderOverride()
        t = t + flomp.FFT_Bass_1 / 1000

        --render.SetBlend(0.999)
        for i = 0, 16 do
            i = (i / 16) * 360
            scale(self, Vector(5,math.cos(t)*4,5))
            self:SetAngles(Angle(t+i, 0, math.sin(t)*180))
            self:SetupBones()
            render.SuppressEngineLighting(true)
            render.MaterialOverride(mat_screenspace)
            self:DrawModel()
            render.MaterialOverride()
            render.SuppressEngineLighting(false)
        end
        --render.SetBlend(1)

        self:SetPos(fractal_renderer:GetPos() + fractal_renderer:GetUp() * 200)

        cam.IgnoreZ(true)
        flomp.emitter:SetPos(self:GetPos())
        flomp.emitter:Draw()
        cam.IgnoreZ(false)
    end
end)

fractal_tree = tree

renderer:Spawn()


flomp.SetScale(1)
flomp.SetVolumeInputScale(3)
flomp.powscale = 1

fractal_renderer = renderer


hook.Add("RenderScene", "flomp_CalcView", function(pos, ang)
    f.eye_origin = pos
    f.eye_angles = ang
end)

local voldata = Vector(0,0,0) -- V, L, R

local function calcsource(eye, rgt, src, dist, fwd, vel)
    local vol = math.Clamp(-((eye - src):Length() / dist) + 1, 0, 1)
    local dot = rgt:Dot((src - eye):Normalize())

    local left = math.Clamp(-dot, 0, 1) + 0.5
    local right = math.Clamp(dot, 0, 1) + 0.5

    if vol ~= 0 then
        return vol, -left + right
    end
end

function GetVolumeData(source, falloff)
    local ply = LocalPlayer()
    return calcsource(ply:EyePos(),f.eye_angles:Right(), source, falloff, f.eye_angles:Forward(), ply:GetVelocity())
end

f.sound_vol = 0

hook.Add("Think","flomp_volume",function()
    local vol, panning = GetVolumeData(flomp.GetSourcePos(), 7000)

    if vol then
        f.sound_vol = vol

        if not f.wowo then
            vol = vol * f.look_at_mult
        end

        hook.Call("FlompVolume", GAMEMODE, (vol^1.5)*2, panning)
    else
        hook.Call("FlompVolume", GAMEMODE, 0, 0)
    end

    renderer:SetPos(Vector(-5381.6665039062, -3296.0832519531, 314.22338867188))
    tree:SetPos(renderer:GetPos())
    renderer:SetAngles(Angle(90,90,0))
    renderer:SetRenderBounds(Vector(1,1,1)*-size*100, Vector(1,1,1)*size*100)
    flomp.SetSource(renderer:GetPos())
end)

function flomp.Panic()
    if html and html:IsValid() then html:Remove() end
    SafeRemoveEntity(renderer)
    SafeRemoveEntity(fractal_tree)
    hook.Remove("Think", "flomp_volume")
    hook.Remove("HUDPaint", "flomp_Helper")
    hook.Remove("RenderScreenspaceEffects", "flomp_RenderScreenspaceEffects")
    hook.Remove("RenderScene", "flomp_CalcView")
    hook.Remove("Spectrum", "flomp_spectrum")
end

hook.Add("HUDPaintBackground", "itsaparty")
hook.Add("CalcView", "itsaparty")


local last_peak = 1
hook.Add("Spectrum", "flomp_spectrum", function(fft)

    local peak = 0

    for k,v in pairs(fft) do
        peak = math.max(peak, v)
        fft[k] = (fft[k] ^ 2)
    end

    last_peak = 0

    flomp.SpectrumUpdate(fft, peak)
end)

flomp.SetScale(0.3)
flomp.SetVolumeInputScale(1.25)

flomp.powscale = 1.75

hook.Add("HUDPaintBackground", "itsaparty")
hook.Add("CalcView", "itsaparty")


function startmusic(URL)
    URL = URL or "http://dl.dropbox.com/u/244444/wtw.ogg"

    if html and html:IsValid() then html:Remove() end

    local html = vgui.Create("DHTML") _G.html = html

    html:AddFunction("gmod", "print", print)
    html:AddFunction("gmod", "data", function(data)
        if flomp.sound_vol == 0 then return end
        pcall(function()
            local data = CompileString(data, "data")()
            hook.Call("Spectrum", nil, data)
        end)
    end)

    local player = setmetatable(
        {
        },
        {
            __index = function(self, func_name)
                return function(...)
                    local tbl = {...}

                    for key, val in pairs(tbl) do
                        tbl[key] = tostring(val)

                        if tbl[key] == "nil" or tbl[key] == "NULL" then
                            tbl[key] = "null"
                        end
                    end

                    local str = ("%s(%q)"):format(func_name, table.concat(tbl, ", "))
                    html:QueueJavascript(str)
                    --print(str)
                end
            end
        }
    )

    html:SetPos(ScrW(), ScrH())
    html:OpenURL("http://dl.dropbox.com/u/244444/gmod_audio.html")
    html:QueueJavascript[[
        var AudioContext = window.AudioContext || window.webkitAudioContext;

        window.onerror = function(desc, file, line)
        {
            gmod.print(desc)
            gmod.print(file)
            gmod.print(line)
        }

        var audio = new AudioContext
        var analyser = audio.createAnalyser()
        analyser.connect(audio.destination)

        setInterval(
            function()
            {
                var spectrum = new Uint8Array(analyser.frequencyBinCount);
                analyser.getByteFrequencyData(spectrum);

                var lol = new Array(spectrum.length);

                for(var i = 0; i < spectrum.length; ++i)
                    lol[i] = spectrum[i] / 255;

                gmod.data("return {" + lol.join(",") + "}");
            },
            15
        );

        function download(url, callback)
        {
            var request = new XMLHttpRequest

            request.open("GET", url, true)
            request.responseType = "arraybuffer"
            request.send(null)

            request.onload = function()
            {
                gmod.print("loaded \"" + url + "\"")
                gmod.print("status " + request.status)
                callback(request.response)
            }

            request.onprogress = function(event)
            {
                gmod.print(Math.round(event.loaded / event.total * 100) + "%")
            }
        }

        var source = audio.createBufferSource()
        var volctrl = audio.createGainNode()

        function play(url)
        {
            download(url, function(data)
            {
                gmod.print("decoding " + data.byteLength + " ...")
                audio.decodeAudioData(data, function(buffer)
                {
                    source = audio.createBufferSource()

                    source.connect(analyser)
                    analyser.connect(volctrl)
                    volctrl.connect(audio.destination)

                    source.buffer = buffer
                    source.loop = true
                    source.noteOn(0)

                    gmod.print("LOADED AND DECODED")
                },
                function(err)
                {
                    gmod.print("decoding error " + err)
                })
            })
        }

        function SetVolume(vol)
        {
            if(volctrl) volctrl.gain.value = vol
        }
    ]]

    player.play(URL)
    timer.Remove("fractals")
    timer.Simple(1, function()
        hook.Add("FlompVolume", "flomp_html_volume", function(vol)
            if not html and html:IsValid() then return end
            player.SetVolume(vol-1)
        end)
    end)
end

if not html then
    startmusic()
end