-- Leaderboards written by Not
-- Reusable

-- Leaderboard Table
-- [mode][mapnum][scoreTable]
local lb = {}

local timeFinished = 0
local disable = false
local prevLap = 0
local splits = {}
local PATCH = nil
local help = true
local EncoreInitial = nil
local scoreTable


-- Text flash on finish
local FlashTics = 0
local FlashRate
local FlashVFlags
local YellowFlash = {
	[0] = V_YELLOWMAP,
	[1] = V_ORANGEMAP,
	[2] = 0
}
local RedFlash = {
	[0] = V_REDMAP,
	[1] = 0
}

-- Tracks if stats have been written or not
local StatTrack = false

local UNCLAIMED = "Unclaimed Record"
local HELP_MESSAGE = "\x89Leaderboard Commands:\nretry exit findmap changelevel spba_clearcheats lb_gui rival scroll encore records"
local FILENAME = "leaderboard.txt"

-- Retry / changelevel map
local nextMap = nil

local Flags = 0
local F_ENCORE = 0x80

-- SPB flags with the least significance first
local F_SPBATK = 0x1
local F_SPBJUS = 0x2
local F_SPBBIG = 0x4
local F_SPBEXP = 0x8

-- Score table separator
local ST_SEP = F_SPBATK

local clearcheats = false

local START_TIME = 6 * TICRATE + (3 * TICRATE / 4) + 1
local AFK_TIMEOUT = TICRATE * 5
local AFK_BALANCE = TICRATE * 60
local AFK_BALANCE_WARN = AFK_BALANCE - TICRATE * 10
local PREVENT_JOIN_TIME = START_TIME + TICRATE * 5

local GUI_OFF    = 0x0
local GUI_SPLITS = 0x1
local GUI_ON     = 0x2

-- Draw states
local DS_DEFAULT = 0x0
local DS_SCROLL  = 0x1
local DS_AUTO    = 0x2
local DS_SCRLTO  = 0x4

local drawState = DS_DEFAULT

-- fixed_t scroll position
local scrollY = 50 * FRACUNIT
local scrollAcc = 0

-- functions --

-- patch caching
local cachePatches

-- clamp(min, v, max)
local clamp

local scroll_to

local ticsToTime

local allowJoin
---------------

-- maploaded cvars
local cv_teamchange
local cv_spbatk

local cv_gui = CV_RegisterVar({
	name = "lb_gui",
	defaultvalue = GUI_ON,
	flags = 0,
	PossibleValue = {Off = GUI_OFF, Splits = GUI_SPLITS, On = GUI_ON}
})

local AntiAFK = true
CV_RegisterVar({
	name = "lb_afk",
	defaultvalue = 1,
	flags = CV_NETVAR | CV_CALL,
	PossibleValue = CV_OnOff,
	func = function(v)
		-- Set players afkTime and toggle AntiAFK
		if v.value then
			for p in players.iterate do
				p.afkTime = leveltime
			end

			AntiAFK = true
		else
			AntiAFK = false
		end
	end
})

local cv_enable = CV_RegisterVar({
	name = "lb_enable",
	defaultvalue = 1,
	flags = CV_NETVAR | CV_CALL,
	PossibleValue = CV_OnOff,
	func = function(v)
		disable = $ or not v.value
		if disable then
			allowJoin(true)
		end
	end
})

local cv_saves = CV_RegisterVar({
	name = "lb_save_count",
	defaultvalue = 20,
	flags = CV_NETVAR,
	PossibleValue = CV_Natural
})

local cv_interrupt = CV_RegisterVar({
	name = "lb_interrupt",
	defaultvalue = 0,
	flags = CV_NETVAR | CV_CALL,
	PossibleValue = CV_OnOff,
	func = function(v)
		if v.value then
			COM_BufInsertText(server, "allowteamchange yes")
		end
	end
})

local function setST(t, map, flags, scoreTable)
	local mode = flags & ST_SEP
	t[mode] = t[mode] or {}
	t[mode][map] = scoreTable
end

local function getST(t, map, flags)
	local mode = flags & ST_SEP
	return t[mode] and t[mode][map] or nil
end

local function setScoreTable(map, flags, scoreTable)
	setST(lb, map, flags, scoreTable)
end

local function getScoreTable(map, flags)
	return getST(lb, map, flags)
end

-- True if a is better than b
local function lbComp(a, b)
	-- Calculates the difficulty, harder has higher priority
	-- if s is positive then a is harder
	-- if s is negative then b is harder
	-- if s is 0 then compare time
	local s = (a["flags"] & (F_SPBEXP | F_SPBBIG)) - (b["flags"] & (F_SPBEXP | F_SPBBIG))
	return s > 0 or not(s < 0 or a["time"] >= b["time"])
end

local function sortScores()
	for mode, t in pairs(lb) do
		for map, scoreTable in pairs(t) do
			table.sort(scoreTable, lbComp)
			setScoreTable(map, mode, scoreTable)
		end
	end
end

-- Reinitialize lb based on new ST_SEP value
local function reinit_lb()
	local nlb = {}

	for mode, t in pairs(lb) do
		for map, scoreTable in pairs(t) do
			for i, score in ipairs(scoreTable) do
				local st = getST(nlb, map, score["flags"]) or {}
				table.insert(st, score)
				setST(nlb, map, score["flags"], st)
			end
		end
	end

	lb = nlb
	sortScores()
end

local cv_spb_separate = CV_RegisterVar({
	name = "lb_spb_combined",
	defaultvalue = 1,
	flags = CV_NETVAR | CV_CALL,
	PossibleValue = CV_YesNo,
	func = function(v)
		if v.value then
			ST_SEP = F_SPBATK
		else
			ST_SEP = F_SPBATK | F_SPBBIG | F_SPBEXP
		end

		reinit_lb()
	end
})

local function score_t(map, name, skin, color, time, splits, flags, stat)
	return {
		["map"]    = map,
		["name"]   = name,
		["skin"]   = skin,
		["color"]  = color,
		["time"]   = time,
		["splits"] = splits,
		["flags"]  = flags,
		["stat"] = stat
	}
end

local function stat_t(speed, weight)
	if speed and weight then
		return {
			["speed"] = speed,
			["weight"] = weight
		}
	end
	return nil
end

local function stat_str(stat)
	if stat then
		return string.format("%d%d", stat["speed"], stat["weight"])
	end

	return "0"
end

-- Read the leaderboard
local f = io.open(FILENAME, "r")
if f then
	for l in f:lines() do
		-- Leaderboard is stored in the following tab separated format
		-- mapnum, name, skin, color, time, splits, flags, stat
		local t = {}
		for word in (l+"\t"):gmatch("(.-)\t") do
			table.insert(t, word)
		end

		local flags = 0
		if t[7] != nil then
			flags = tonumber(t[7])
		end

		scoreTable = getScoreTable(tonumber(t[1]), flags) or {}

		local spl = {}
		if t[6] != nil then
			for str in t[6]:gmatch("([^ ]+)") do
				table.insert(spl, tonumber(str))
			end
		end

		local stats = nil
		if t[8] != nil then
			if #t[8] >= 2 then
				local speed = tonumber(string.sub(t[8], 1, 1))
				local weight = tonumber(string.sub(t[8], 2, 2))
				stats = stat_t(speed, weight)
			end
		end

		table.insert(
			scoreTable,
			score_t(
				tonumber(t[1]),
				t[2],
				t[3],
				t[4],
				tonumber(t[5]),
				spl,
				flags,
				stats
			)
		)

		setScoreTable(tonumber(t[1]), flags, scoreTable)
	end

	sortScores()
	f:close()
else
	print("Failed to open file: ", FILENAME)
end

function allowJoin(v)
	if not cv_interrupt.value then
		local y
		if v then
			y = "yes"
			hud.enable("freeplay")
		else
			y = "no"
			hud.disable("freeplay")
		end

		COM_BufInsertText(server, "allowteamchange " + y)
	end
end

-- Returns true if there is a single player ingame
local function singleplayer()
	local n = 0
	for p in players.iterate do
		if p.valid and not p.spectator then
			n = $ + 1
			if n > 1 then
				return false
			end
		end
	end
	return true
end

local function initLeaderboard(player)
	if disable and leveltime < START_TIME then
		disable = not singleplayer()
	else
		disable = disable or not singleplayer()
	end
	disable = $ or not cv_enable.value or not (maptol & (TOL_SP | TOL_RACE))

	-- Restore encore mode to initial value
	if disable and EncoreInitial != nil then
		COM_BufInsertText(server, string.format("kartencore %d", EncoreInitial))
		EncoreInitial = nil
	end

	player.afkTime = leveltime
end
addHook("PlayerSpawn", initLeaderboard)

local function doyoudare(player)
	if not singleplayer() or player.spectator then
		CONS_Printf(player, "How dare you")
		return false
	end
	return true
end

local function retry(player, ...)
	if doyoudare(player) then
		-- Prevents bind crash
		if leveltime < 20 then
			return
		end
		nextMap = G_BuildMapName(gamemap)
	end
end
COM_AddCommand("retry", retry)

local function exitlevel(player, ...)
	if doyoudare(player) then
		G_ExitLevel()
	end
end
COM_AddCommand("exit", exitlevel)

local function zoneAct(map)
	local z = ""
	if map.zonttl != "" then
		z = " " + map.zonttl
	elseif not(map.levelflags & LF_NOZONE) then
		z = " Zone"
	end
	if map.actnum != "" then
		z = $ + " " + map.actnum
	end

	return z
end

local function findMap(player, ...)
	local search = ...

	local hell = "\x85HELL"
	local tol = {
		[TOL_SP] = "\x81Race\x80", -- Nuked race maps
		[TOL_COOP] = "\x8D\Battle\x80", -- Nuked battle maps
		[TOL_RACE] = "\x88Race\x80",
		[TOL_MATCH] = "\x87\Battle\x80"
	}
	local lvltype, map, lvlttl

	for i = 1, #mapheaderinfo do
		map = mapheaderinfo[i]
		if map == nil then
			continue
		end

		lvlttl = map.lvlttl + zoneAct(map)

		if not search or lvlttl:lower():find(search:lower()) then
			-- Only care for up to TOL_MATCH (0x10)
			lvltype = tol[map.typeoflevel & 0x1F] or map.typeoflevel

			-- If not battle print numlaps
			lvltype = (map.typeoflevel & (TOL_MATCH | TOL_COOP) and lvltype)
				or string.format("%s \x82%-2d\x80", lvltype, map.numlaps)


			CONS_Printf(
				player,
				string.format(
					"%s %-9s %-30s - %s\t%s",
					G_BuildMapName(i),
					lvltype,
					lvlttl,
					map.subttl,
					(map.menuflags & LF2_HIDEINMENU and hell) or ""
				)
			)
		end
	end
end
COM_AddCommand("findmap", findMap)

local function mapnumFromExtended(map)
	local p, q = map:upper():match("MAP(%w)(%w)$", 1)
	if not (p and q) then
		return nil
	end

	local mapnum = 0
	local A = string.byte("A")

	if tonumber(p) != nil then
		-- Non extended map numbers
		if tonumber(q) == nil then
			return nil
		end
		mapnum = tonumber(p) * 10 + tonumber(q)
	else
		--Extended map numbers
		p = string.byte(p) - A
		local qn = tonumber(q)
		if qn == nil then
			qn = string.byte(q) - A + 10
		end

		mapnum = 36 * p + qn + 100
	end

	return mapnum
end

local SPBModeSym = {
	[F_SPBEXP] = "X",
	[F_SPBBIG] = "B",
	[F_SPBJUS] = "J",
}

local function modeToString(mode)
	local modestr = "Time Attack"
	if mode & F_SPBATK then
		modestr = "SPB"
		for k, v in pairs(SPBModeSym) do
			if mode & k then
				modestr = $ + v
			end
		end
	end

	return modestr
end

local function records(player, ...)
	local mapid = ...
	local mapnum = gamemap

	if mapid then
		mapnum = mapnumFromExtended(mapid)
		if not mapnum then
			CONS_Printf(player, string.format("Invalid map name: %s", mapid))
			return
		end
	end

	local map = mapheaderinfo[mapnum]
	if map then
		CONS_Printf(player,
			string.format(
				"\x83%s%8s",
				map.lvlttl,
				(map.menuflags & LF2_HIDEINMENU and "\x85HELL") or ""
			)
		)

		local zoneact = zoneAct(map)
		-- print the zone/act on the right hand size under the title
		CONS_Printf(
			player,
			string.format(
				string.format("\x83%%%ds%%s\x80 - \x88%%s", #map.lvlttl - #zoneact / 2 - 1),
				" ",
				zoneAct(map),
				map.subttl
			)
		)
	else
		CONS_Printf(player, "\x85UNKNOWN MAP")
	end

	for mode, maps in pairs(lb) do
		local maptbl = maps[mapnum]
		if not maptbl then continue end
		CONS_Printf(player, "")
		CONS_Printf(player, modeToString(mode))

		-- don't print flags for time attack
		if mode then
			for i, tbl in ipairs(maptbl) do
				CONS_Printf(
					player,
					string.format(
						"%2d %-21s \x89%8s \x80%s",
						i,
						tbl["name"],
						ticsToTime(tbl["time"]),
						modeToString(tbl["flags"])
					)
				)
			end
		else
			for i, tbl in ipairs(maptbl) do
				CONS_Printf(
					player,
					string.format(
						"%2d %-21s \x89%8s",
						i,
						tbl["name"],
						ticsToTime(tbl["time"])
					)
				)
			end
		end
	end
end
COM_AddCommand("records", records)

local function changelevel(player, ...)
	if not doyoudare(player) then
		return
	end
	if leveltime < 20 then
		return
	end

	local map = ...
	if map == nil then
		CONS_Printf(player, "Usage: changelevel MAPXX")
		return
	end

	local mapnum = mapnumFromExtended(map)
	if not mapnum then
		CONS_Printf(player, string.format("Invalid map name: %s", map))
	end

	if mapheaderinfo[mapnum] == nil then
		CONS_Printf(player, string.format("Map doesn't exist: %s", map:upper()))
		return
	end

	-- Verify valid race level
	if not (mapheaderinfo[mapnum].typeoflevel & (TOL_SP | TOL_RACE)) then
		CONS_Printf(player, "Battle maps are not supported")
		return
	end

	nextMap = G_BuildMapName(mapnum)
end
COM_AddCommand("changelevel", changelevel)

local function toggleEncore(player)
	if not doyoudare(player) then
		return
	end

	local enc = CV_FindVar("kartencore")
	if EncoreInitial == nil then
		EncoreInitial = enc.value
	end

	if enc.value then
		COM_BufInsertText(server, "kartencore off")
	else
		COM_BufInsertText(server, "kartencore on")
	end
end
COM_AddCommand("encore", toggleEncore)

local function clearcheats(player)
	if not player.spectator then
		clearcheats = true
		CONS_Printf(player, "SPB Attack cheats will be cleared on next round")
	end
end
COM_AddCommand("spba_clearcheats", clearcheats)

local function scrollGUI(player, ...)
	if not doyoudare(player) then return end

	if drawState == DS_DEFAULT then
		scroll_to(player)
	else
		drawState = DS_DEFAULT
	end
end
COM_AddCommand("scroll", scrollGUI)

local function findRival(player, ...)
	local rival, page = ...
	page = (tonumber(page) or 1) - 1

	if rival == nil then
		CONS_Printf(player, "Print the times of your rival.\nUsage: rival <playername> <page>")
		return
	end

	local colors = {
		[1] = "\x85",
		[0] = "\x89",
		[-1] = "\x88"
	}

	local sym = {
		[true] = "-",
		[false] = "",
	}

	local scores = {}
	local totalScores = 0
	local totalDiff = 0


	CONS_Printf(player, string.format("\x89%s's times:", rival))
	CONS_Printf(player, "MAP  	 Time    	  Diff    	Mode")

	for mode, tbl in pairs(lb) do
		scores[mode] = {}

		for map, scoreTable in pairs(tbl) do
			local rivalScore = nil
			local yourScore = nil

			for _, score in pairs(scoreTable) do
				if score["name"] == player.name then
					yourScore = score
				elseif score["name"] == rival then
					rivalScore = score
				end

				if rivalScore and yourScore then
					break
				end
			end

			if rivalScore and yourScore then
				totalDiff = totalDiff + yourScore["time"] - rivalScore["time"]
			end

			if rivalScore then
				totalScores = totalScores + 1
				table.insert(
					scores[mode],
					{
						["rival"] = rivalScore,
						["your"] = yourScore
					}
				)
			end
		end
	end

	local i = 0
	local stop = 19
	local o = page * stop

	local function sortf(a, b)
		return a["rival"]["map"] < b["rival"]["map"]
	end

	for mode, tbl in pairs(scores) do
		if i >= stop then break end

		table.sort(tbl, sortf)

		for _, score in ipairs(tbl) do
			if o then
				o = o - 1
				continue
			end
			if i >= stop then break end
			i = i + 1

			local modestr = modeToString(score["rival"]["flags"])

			if score["your"] then
				local diff = score["your"]["time"] - score["rival"]["time"]
				local color = colors[clamp(-1, diff, 1)]

				CONS_Printf(
					player,
					string.format(
						"%s	%8s	%s%9s	\x80%s",
						G_BuildMapName(score["rival"]["map"]),
						ticsToTime(score["rival"]["time"]),
						color,
						sym[diff<0] + ticsToTime(abs(diff)),
						modestr
					)
				)
			else
				CONS_Printf(
					player,
					string.format(
						"%s	%8s	%9s	%s",
						G_BuildMapName(score["rival"]["map"]),
						ticsToTime(score["rival"]["time"]),
						ticsToTime(0, true),
						modestr
					)
				)
			end
		end
	end

	CONS_Printf(
		player,
		string.format(
			"Your score = %s%s%s",
			colors[clamp(-1, totalDiff, 1)],
			sym[totalDiff<0],
			ticsToTime(abs(totalDiff))
		)
	)

	CONS_Printf(
		player,
		string.format(
			"Page %d out of %d",
			page + 1,
			totalScores / stop + 1
		)
	)
end
COM_AddCommand("rival", findRival)

--DEBUGGING
--local function printTable(tb)
--	for mode, tbl in pairs(tb) do
--		for map, scoreTable in pairs(tbl) do
--			print(string.format("[%d][%d] #%d", mode, map, #scoreTable))
--
--			--if scoreTable != nil then
--			--	print(
--			--		v[i]["name"],
--			--		v[i]["skin"],
--			--		v[i]["color"],
--			--		v[i]["time"],
--			--		table.concat(v[i]["splits"]),
--			--		v[i]["flags"],
--			--		","
--			--	)
--			--
--			--end
--		end
--	end
--end

addHook("MapLoad", function()
		timeFinished = 0
		splits = {}
		prevLap = 0
		drawState = DS_DEFAULT
		scrollY = 50 * FRACUNIT
		scrollAcc = 0
		FlashTics = 0

		-- cvars
		cv_teamchange = CV_FindVar("teamchange")
		cv_spbatk = CV_FindVar("spbatk")

		allowJoin(true)
		--printTable(lb)
	end
)

function ticsToTime(tics, pure)
	if tics == 0 and pure then
		return "-:--:--"
	end

	return string.format(
		"%d:%02d:%02d",
		G_TicsToMinutes(tics, true),
		G_TicsToSeconds(tics),
		G_TicsToCentiseconds(tics)
	)
end

-- Item patches have the amazing property of being displaced 12x 13y pixels
local iXoffset = 13 * FRACUNIT
local iYoffset = 12 * FRACUNIT
local function drawitem(v, x, y, scale, itempatch, vflags)
	v.drawScaled(
		x * FRACUNIT - FixedMul(iXoffset, scale),
		y * FRACUNIT - FixedMul(iYoffset, scale),
		scale,
		itempatch,
		vflags
	)
end

local modePatches = {
	[F_SPBATK] = "SPB",
	[F_SPBJUS] = "HYUD",
	[F_SPBBIG] = "BIG",
	[F_SPBEXP] = "INV"
}

local function modePatch(flag)
	if flag == F_SPBEXP then
		return PATCH[modePatches[flag]][(leveltime / 4) % 6]
	end
	return PATCH[modePatches[flag]]
end

local cursors = {
	[1] = ". ",
	[2] = " ."
}
local function marquee(text, maxwidth)
	if #text <= maxwidth then
		return text
	end

	local shift = 16

	-- Creates an index range ranging from -shift to #text + shift
	local pos = ((leveltime / 16) % (#text - maxwidth + shift * 2)) + 1 - shift

	local cursor = ""
	if pos < #text - maxwidth + 1 then
		cursor = cursors[((leveltime / 11) % #cursors) + 1]
	end

	-- The pos is the index going from -shift to #text + shift
	-- It's clamped within the text boundaries ie.
	-- 0 < pos < #text - maxwidth
	pos = min(max(pos, 1), #text - maxwidth + 1)
	return text:sub(pos, pos + maxwidth - 1) + cursor
end

-- Bats on ...
local bodium = {V_YELLOWMAP, V_GRAYMAP, V_BROWNMAP, 0}

local splitColor = {
	[-1] = V_SKYMAP,
	[0] = V_PURPLEMAP,
	[1] = V_REDMAP
}
local splitSymbol = {
	[-1] = "-",
	[0] = "",
	[1] = "+"
}

local showSplit = 0
local VFLAGS = V_SNAPTOLEFT
local FACERANK_DIM = 16
local FACERANK_SPC = FACERANK_DIM + 4
local function drawScore(v, player, pos, x, y, gui, faceRank, score, drawPos, textVFlags)
	textVFlags = textVFlags or V_HUDTRANSHALF
	local me = player.name == score["name"]

	--draw Patch/chili
	v.draw(x, y, faceRank, V_HUDTRANS | VFLAGS, v.getColormap("sonic", score["color"]))
	if me then
		v.draw(x, y, PATCH["CHILI"][(leveltime / 4) % 8], V_HUDTRANS | VFLAGS)
	end

	-- Encore
	if score["flags"] & F_ENCORE then
		local bob = sin((leveltime + i * 5) * (ANG10))
		v.drawScaled(
			x * FRACUNIT,
			bob + (y + FACERANK_DIM / 2) * FRACUNIT,
			FRACUNIT / 6,
			PATCH["RUBY"],
			V_HUDTRANS | VFLAGS
		)
	end

	-- SPB
	if score["flags"] & F_SPBATK then
		local scale = FRACUNIT / 4
		drawitem(
			v,
			x - 2,
			y - 2,
			scale,
			modePatch(F_SPBATK),
			V_HUDTRANS | VFLAGS
		)
		if score["flags"] & F_SPBEXP then
			drawitem(
				v,
				x + FACERANK_DIM - 4,
				y - 2,
				scale,
				modePatch(F_SPBEXP),
				V_HUDTRANS | VFLAGS
			)
		end
		if score["flags"] & F_SPBBIG then
			drawitem(
				v,
				x - 2,
				y + FACERANK_DIM - 4,
				scale,
				modePatch(F_SPBBIG),
				V_HUDTRANS | VFLAGS
			)
		end
		if score["flags"] & F_SPBJUS then
			drawitem(
				v,
				x + FACERANK_DIM - 4,
				y + FACERANK_DIM - 4,
				scale,
				modePatch(F_SPBJUS),
				V_HUDTRANS | VFLAGS
			)
		end
	end

	-- Position
	if drawPos then
		v.drawNum(x, y + 3, pos, textVFlags | VFLAGS)
	end

	-- Stats
	local stat = score["stat"]
	local pskin = score["skin"] and skins[score["skin"]]
	if stat and not (
			pskin
			and pskin.kartweight == stat["weight"]
			and pskin.kartspeed == stat["speed"]
		) then
		v.drawString(x + FACERANK_DIM - 2, y + 4, stat["speed"], V_HUDTRANS | VFLAGS, "small")
		v.drawString(x + FACERANK_DIM - 2, y + 8, stat["weight"], V_HUDTRANS | VFLAGS, "small")
	end

	if gui == GUI_ON or (gui == GUI_SPLITS and showSplit) then
		local name = score["name"]

		-- Shorten long names
		local stralign = "left"
		local MAXWIDTH = 70
		local px = 2
		local py = 0
		if v.stringWidth(name) > MAXWIDTH then
			stralign = "thin"
			py = -1
			if v.stringWidth(name, 0, "thin") > MAXWIDTH then
				stralign = "small"
				py = 2
				if v.stringWidth(name, 0, "small") > MAXWIDTH then
					name = marquee(name, 15)
				end
			end
		end

		local flashV = 0
		if me and FlashTics > leveltime then
			flashV = FlashVFlags[leveltime / FlashRate % (#FlashVFlags + 1)]
		end

		v.drawString(
			x + FACERANK_DIM + px,
			y + py,
			name,
			textVFlags | V_ALLOWLOWERCASE | VFLAGS | flashV,
			stralign
		)

		-- Draw splits
		if showSplit and score["splits"] and score["splits"][prevLap] != nil then
			local split = splits[prevLap] - score["splits"][prevLap]
			v.drawString(
				x + px + FACERANK_DIM,
				y + 8,
				splitSymbol[clamp(-1, split, 1)] + ticsToTime(abs(split)),
				textVFlags | splitColor[clamp(-1, split, 1)] | VFLAGS
			)
		else
			v.drawString(
				x + px + FACERANK_DIM,
				y + 8,
				ticsToTime(score["time"], true),
				textVFlags | bodium[min(pos, 4)] | VFLAGS | flashV
			)
		end
	end
end

local function drawDefault(v, player, scoreTable, gui)
	local yoffset = (200 / 4) + 4
	local x = 4


	-- Draw placeholder score
	if scoreTable == nil then
		drawScore(v, player, 1, x, y, gui, PATCH["NORANK"], {["name"] = UNCLAIMED, ["time"] = 0, ["flags"] = 0})
	else
		for pos, score in ipairs(scoreTable) do
			if pos > 5 then break end

			local faceRank = PATCH["FACERANK"][score.skin] or PATCH["NORANK"]
			local y = yoffset + (FACERANK_SPC) * (pos - 1)
			drawScore(
				v, player, pos,
				x, y,
				gui, faceRank,
				score
			)
		end
	end
end

local function drawScroll(v, player, scoreTable, gui)
	if scoreTable then
		scrollY = scrollY + FixedMul(1 * FRACUNIT, scrollAcc)

		local minim = -((#scoreTable - 1) * FACERANK_SPC * FRACUNIT)
		local maxim = (200 - FACERANK_DIM) * FRACUNIT

		scrollY = clamp(minim, scrollY, maxim)

		-- Bounceback
		if scrollY == minim or scrollY == maxim then
			scrollAcc = -FixedMul(scrollAcc, FRACUNIT / 3)
		end

		local x = 10
		if #scoreTable >= 10 then
			x = x + 8
			if #scoreTable >= 100 then
				x = x + 8
			end
		end

		local y = FixedInt(scrollY)

		for pos, score in ipairs(scoreTable) do
			local faceRank = PATCH["FACERANK"][score.skin] or PATCH["NORANK"]
			drawScore(
				v, player, pos,
				x, y + ((pos - 1) * FACERANK_SPC),
				gui, faceRank,
				score,
				true,
				V_HUDTRANS
			)
		end
	end
end
local function drawAuto(v, player, scoreTable, gui)
end

local scrollToPos = nil
local function drawScrollTo(v, player, scoreTable, gui)
	drawState = DS_SCROLL
	if scrollToPos == nil then return end

	scrollY = (-(scrollToPos * FACERANK_SPC) + (100 - FACERANK_SPC / 2)) * FRACUNIT
	scrollToPos = nil
	drawScroll(v, player, scoreTable, gui)
end

local stateFunctions = {
	[DS_DEFAULT] = drawDefault,
	[DS_SCROLL] = drawScroll,
	[DS_AUTO] = drawAuto,
	[DS_SCRLTO] = drawScrollTo
}

-- Draw mode and return pos + 1 if success
local function drawMode(v, pos, flag)
	if not (Flags & flag) then return pos end

	drawitem(v, pos * 6 + 1, 194, FRACUNIT / 4, modePatch(flag), V_SNAPTOBOTTOM | V_SNAPTOLEFT)
	return pos + 1
end

local function drawScoreboard(v, player)
	if disable then return end
	if player != displayplayers[0] then return end

	cachePatches(v)

	local gui = cv_gui.value
	if leveltime < START_TIME or player.exiting or player.lives == 0 then
		gui = GUI_ON
	end

	if gui then
		stateFunctions[drawState](v, player, scoreTable, gui)
	end

	local pos = 0
	-- Draw current active modes bottom left
	pos = drawMode(v, pos, F_SPBJUS)
	pos = drawMode(v, pos, F_SPBBIG)
	pos = drawMode(v, pos, F_SPBEXP)
end
hud.add(drawScoreboard, "game")

function cachePatches(v)
	if PATCH == nil then
		PATCH = {}

		PATCH["CHILI"] = {}
		for i = 1, 8 do
			PATCH["CHILI"][i-1] = v.cachePatch("K_CHILI" + i)
		end

		PATCH["NORANK"] = v.cachePatch("M_NORANK")

		PATCH["FACERANK"] = {}
		for skin in skins.iterate do
			PATCH["FACERANK"][skin.name] = v.cachePatch(skin.facerank)
		end

		PATCH["SPB"] = v.cachePatch("K_ISSPB")
		PATCH["INV"] = {}
		for i = 1, 6 do
			PATCH["INV"][i - 1] = v.cachePatch("K_ISINV" + i)
		end
		PATCH["BIG"] = v.cachePatch("K_ISGROW")
		PATCH["HYUD"] = v.cachePatch("K_ISHYUD")
		PATCH["RUBY"] = v.cachePatch("RUBYICON")
	end
end

-- Find location of player and scroll to it
function scroll_to(player)
	local m = scoreTable or {}

	scrollToPos = 2
	for pos, score in ipairs(m) do
		if player.name == score["name"] then
			scrollToPos = max(2, pos - 1)
			break
		end
	end

	drawState = DS_SCRLTO
end

-- Write skin stats to each score where there are none
local function writeStats()
	for _, t in pairs(lb) do
		for _, scoreTable in pairs(t) do
			for _, score in ipairs(scoreTable) do
				local skin = skins[score["skin"]]
				if skin and not score["stat"] then
					local stats = stat_t(skin.kartspeed, skin.kartweight)
					score["stat"] = stats
				end
			end
		end
	end
end

local function saveTime(player)

	scoreTable =  $ or {}

	local pskin = skins[player.mo.skin]
	local newscore = score_t(
		gamemap,
		player.name,
		player.mo.skin,
		player.skincolor,
		timeFinished,
		splits,
		Flags,
		stat_t(player.HMRs or pskin.kartspeed, player.HMRw or pskin.kartweight)
	)

	-- Check if you beat your previous best
	for i = 1, #scoreTable do
		if scoreTable[i]["name"] == player.name then
			if lbComp(newscore, scoreTable[i]) then
				table.remove(scoreTable, i)
				S_StartSound(nil, 130)
				FlashTics = leveltime + TICRATE * 3
				FlashRate = 1
				FlashVFlags = YellowFlash
				break
			else
				-- You suck lol
				S_StartSound(nil, 201)
				FlashTics = leveltime + TICRATE * 3
				FlashRate = 3
				FlashVFlags = RedFlash
				scroll_to(player)
				return
			end
		end
	end

	print("Saving score")
	table.insert(
		scoreTable,
		newscore
	)

	table.sort(scoreTable, lbComp)
	while #scoreTable > cv_saves.value do
		table.remove(scoreTable)
	end

	scroll_to(player)

	setScoreTable(gamemap, Flags, scoreTable)

	if not StatTrack then
		writeStats()
		StatTrack = true
	end

	local f = assert(io.open(FILENAME, "w"))
	if f == nil then
		print("Failed to open file for writing: " + FILENAME)
		return
	end

	for _, tbl in pairs(lb) do
		for _, scoreTable in pairs(tbl) do
			for _, score in ipairs(scoreTable) do
				f:write(
					score["map"], "\t",
					score["name"], "\t",
					score["skin"], "\t",
					score["color"], "\t",
					score["time"], "\t",
					table.concat(score["splits"], " "), "\t",
					score["flags"], "\t",
					stat_str(score["stat"]), "\n"
				)
			end
		end
	end

	f:close()
end

-- DEBUGGING
--local function saveLeaderboard(player, ...)
--	timeFinished = tonumber(... or player.realtime)
--	splits = {1000, 2000, 3000}
--	saveTime(player)
--end
--COM_AddCommand("save", saveLeaderboard)

local function regLap(player)
	if player.laps > prevLap and timeFinished == 0 then
		prevLap = player.laps
		table.insert(splits, player.realtime)
		showSplit = 5 * TICRATE
	end
end

local function getGamer()
	for p in players.iterate do
		if p.valid and not p.spectator then
			return p
		end
	end
end

local function changeMap()
	COM_BufInsertText(server, "map " + nextMap + " -force -gametype race")
	nextMap = nil
end

local function think()
	if nextMap then changeMap() end

	if disable then
		if AntiAFK then
			if not singleplayer() then
				for p in players.iterate do
					if p.valid and not p.spectator and not p.exiting and p.lives > 0 then
						if p.cmd.buttons then
							p.afkTime = leveltime
						end

						--Away from kart
						if p.afkTime + AFK_BALANCE_WARN == leveltime then
							chatprintf(p, "[AFK] \x89You will be moved to spectator in 10 seconds!", false)
							S_StartSound(nil, 26, p)
						end
						if p.afkTime + AFK_BALANCE < leveltime then
							p.spectator = true
							chatprint("\x89" + p.name + " was moved to the other team for game balance", true)
						end
					end
				end
			else
				for p in players.iterate do
					if p.valid and not p.spectator then
						p.afkTime = leveltime
					end
				end
			end
		end

		help = true
		return
	end

	showSplit = max(0, showSplit - 1)

	local p = getGamer()
	if leveltime < START_TIME then
		-- Help message
		if leveltime == START_TIME - TICRATE * 3 then
			if singleplayer()  then
				if help then
					help = false
					chatprint(HELP_MESSAGE, true)
				end
			else
				help = true
			end
		end

		-- Autospec
		-- Encore
		if leveltime == 1 then
			Flags = $ & !F_ENCORE
			if encoremode then
				Flags = $ | F_ENCORE
			end

			if p then
				for s in players.iterate do
					if s.valid and s.spectator then
						COM_BufInsertText(s, string.format("view \"%d\"", #p))
					end
				end
			end
		end

		-- Gamemode flags
		Flags = $ & !(F_SPBATK | F_SPBEXP | F_SPBBIG | F_SPBJUS)
		if server.SPBArunning
		   and cv_spbatk.value
		   and leveltime > START_TIME - (3 * TICRATE) / 2 then
			Flags = $ | F_SPBATK
			if server.SPBAexpert then
				Flags = $ | F_SPBEXP
			end
			if clearcheats then
				clearcheats = false
				for q in players.iterate do
					q.SPBAKARTBIG = false
					q.SPBAjustice = false
					q.SPBAshutup = false
				end
			end

			if p then
				if p.SPBAKARTBIG then
					Flags = $ | F_SPBBIG
				end
				if p.SPBAjustice then
					Flags = $ | F_SPBJUS
				end
			end

			-- make sure the spb actually spawned
			if leveltime == START_TIME - 1 then
				if not (server.SPBAbomb and server.SPBAbomb.valid) then
					-- it didn't spawn, clear spb flags
					Flags = $ & !(F_SPBATK | F_SPBEXP | F_SPBBIG | F_SPBJUS)
				end
			end

		else
			hud.enable("freeplay")
		end

	end

	scoreTable = getScoreTable(gamemap, Flags)

	if p then
		-- Scroll controller
		-- Spectators can't input buttons so let the gamer do it
		if drawState == DS_SCROLL then
			if p.cmd.buttons & BT_BACKWARD then
				scrollAcc = scrollAcc - FRACUNIT / 3
			elseif p.cmd.buttons & BT_FORWARD then
				scrollAcc = scrollAcc + FRACUNIT / 3
			else
				scrollAcc = FixedMul(scrollAcc, (FRACUNIT * 90) / 100)
				if scrollAcc < FRACUNIT and scrollAcc > -FRACUNIT then
					scrollAcc = 0
				end
			end
		end

		if p.lives == 0 then
			drawState = DS_SCROLL
		end

		if p.cmd.buttons then
			p.afkTime = leveltime
		end

		if not replayplayback then
			if leveltime > PREVENT_JOIN_TIME and p.afkTime + AFK_TIMEOUT > leveltime then
				if cv_teamchange.value then
					allowJoin(false)
				end
			elseif p.afkTime + AFK_TIMEOUT < leveltime then
				if not cv_teamchange.value then
					allowJoin(true)
				end
			end
		end

		if p.laps >= mapheaderinfo[gamemap].numlaps and timeFinished == 0 then
			timeFinished = p.realtime
			saveTime(p)
		end
		regLap(p)
	elseif cv_teamchange.value == 0 then
		allowJoin(true)
	end
end
addHook("ThinkFrame", think)

local function interThink()
	if nextMap then changeMap() end

	if not cv_teamchange then
		cv_teamchange = CV_FindVar("allowteamchange")
	end

	if not cv_teamchange.value then
		allowJoin(true)
	end
end
addHook("IntermissionThinker", interThink)
addHook("VoteThinker", interThink)

-- Returns the values clamed between min, max
function clamp(min_v, v, max_v)
	return max(min_v, min(v, max_v))
end

local function netvars(net)
	Flags = net($)
	splits = net($)
	prevLap = net($)
	drawState = net($)
	StatTrack = net($)
	EncoreInitial = net($)
	lb = net($)
end
addHook("NetVars", netvars)