local cvars = cvars
local draw = draw
local hook = hook
local math = math
local table = table
local timer = timer
local Color = Color
local ColorAlpha = ColorAlpha
local CreateClientConVar = CreateClientConVar
local GetConVar = GetConVar
local GetConVarNumber = GetConVarNumber
local ipairs = ipairs
local pairs = pairs
local unpack = unpack

local ConVars = {}
local HUDWidth

local FoodAteAlpha = -1
local FoodAteY = 0

surface.CreateFont("HungerPlus", {
        size = 70,
        weight = 500,
        antialias = true,
        shadow = false,
        font = "ChatFont"})

local function ReloadConVars()
        ConVars = {
                HungerBackground = {0, 0, 0, 255},
                HungerForeground = {30, 30, 120, 255},
                HungerPercentageText = {255, 255, 255, 255},
                StarvingText = {200, 0, 0, 255},
                FoodEatenBackground = {0, 0, 0}, -- No alpha
                FoodEatenForeground = {20, 100, 20} -- No alpha
        }
        for name, Colour in pairs(ConVars) do
                ConVars[name] = {}
                for num, rgb in ipairs(Colour) do
                        local ConVarName = name..num
                        local CVar = GetConVar(ConVarName) or CreateClientConVar(ConVarName, rgb, true, false)
                        table.insert(ConVars[name], CVar:GetInt())

                        if not cvars.GetConVarCallbacks(ConVarName, false) then
                                cvars.AddChangeCallback(ConVarName, function() timer.Simple(0, ReloadConVars) end)
                        end
                end
                ConVars[name] = Color(unpack(ConVars[name]))
        end

        if not HUDWidth then
                cvars.AddChangeCallback("HudW", function() timer.Simple(0, ReloadConVars) end)
        end

        HUDWidth = GetConVarNumber("HudW")
end
timer.Simple(0, ReloadConVars)

local function HMHUD()
        local shouldDraw = hook.Call("HUDShouldDraw", GAMEMODE, "DarkRP_Hungermod")
        if shouldDraw == false then return end

        local energy = math.ceil(LocalPlayer():getDarkRPVar("Energy") or 0)

        local x = (ScrW() / 2) - (HUDWidth / 2)
        local y = ScrH() - 9

        local cornerRadius = 4
        if energy > 0 then
                cornerRadius = math.Min(4, (HUDWidth-9)*(energy/100)/3*2 - (HUDWidth-9)*(energy/100)/3*2%2)
        end

        draw.RoundedBox(cornerRadius, x - 1, y - 1, HUDWidth - 8, 9, ConVars.HungerBackground)

        if energy > 0 then
                draw.RoundedBox(cornerRadius, x, y, (HUDWidth - 9) * (energy / 100), 7, ConVars.HungerForeground)
                draw.SimpleText(energy .. "%", "DefaultSmall", x + HUDWidth, y - 3, ConVars.HungerPercentageText, 1)
        else
                draw.SimpleText(DarkRP.getPhrase("starving"), "ChatFont", x + HUDWidth, y - 5, ConVars.StarvingText, 1)
        end

        if FoodAteAlpha > -1 then
                local mul = 1
                if FoodAteY <= ScrH() - 100 then
                        mul = -.5
                end

                draw.SimpleText("++", "HungerPlus", 208, FoodAteY + 1, ColorAlpha(ConVars.FoodEatenBackground, FoodAteAlpha), 0)
                draw.SimpleText("++", "HungerPlus", 207, FoodAteY, ColorAlpha(ConVars.FoodEatenForeground, FoodAteAlpha), 0)

                FoodAteAlpha = math.Clamp(FoodAteAlpha + 4 * FrameTime() * mul, -1, 1) --ColorAlpha works with 0-1 alpha
                FoodAteY = FoodAteY - 150 * FrameTime()
        end
end
hook.Add("HUDDrawTargetID", "HMHUD", HMHUD) --HUDDrawTargetID is called after DarkRP HUD is drawn in HUDPaint

local function AteFoodIcon(msg)
        FoodAteAlpha = 1
        FoodAteY = ScrH() - 8
end
usermessage.Hook("AteFoodIcon", AteFoodIcon)