local width, xPos, yPos = include('config.lua')
yPos = 0+8

local curPos = {
	{ x = xPos, y = yPos-3 },
	{ x = xPos-5, y = yPos-8 },
	{ x = xPos+5, y= yPos-8 }
}

local ultimateDirection = {
	[0]="N",
	[45]="NE",
	[90]="E",
	[135]="SE",
	[180]="S",
	[225]="SW",
	[270]="W",
	[315]="NW"
}

local function drawCurrentPositionCursor()
	surface.SetDrawColor(255,255,255,255)
	draw.NoTexture()
	surface.DrawPoly(curPos)
end

local function drawCompassLines()
	-- The angle increases towards the West, therefore we change the direction
	-- 0 = -0 & 180 = -180
	local angle = LocalPlayer():GetAngles().y*-1

	local leftAngleEdge = (angle-90)
	local firstDrawn = math.ceil(leftAngleEdge/5)*5
	local rightAngleEdge = (angle+90)
	local lastDrawn = math.floor(rightAngleEdge/5)*5

	surface.SetFont( "ChatFont" )

	for drawn=firstDrawn, lastDrawn, 5 do
		-- The X coordinate, relative to the left side of the box
		local relativeX = width*(drawn-leftAngleEdge)/180
		-- The X coordinate relative to the screen
		local globalX = xPos - width/2+relativeX

		local textPrint = drawn%360
		local boxW, boxH = 1, ScrH()*5/1080
		if (drawn%45 == 0) then
			surface.SetDrawColor( 255, 255, 255, 255*(1-((angle-drawn)/90)^2))
			surface.SetTextColor( 255, 255, 255, 255*(1-((angle-drawn)/90)^2))
			textPrint = ultimateDirection[textPrint]
			boxW, boxH = 2, boxH*3
		else
			surface.SetDrawColor( 200, 200, 200, 128*(1-((angle-drawn)/90)^2))
			surface.SetTextColor( 200, 200, 200, 128*(1-((angle-drawn)/90)^2))
			if (drawn%15 == 0) then
				boxH = boxH*2
			end
		end

		if(drawn%15 == 0) then
			local w,h = surface.GetTextSize(textPrint)
			surface.SetTextPos( globalX-(w/2), yPos+boxH)
			surface.DrawText(textPrint)
		end
		surface.DrawRect(globalX-boxW/2, yPos, boxW, boxH)
	end
end

hook.Add( "HUDPaint", "update_compass", function()
	draw.RoundedBox( 5, xPos-width/2-10, yPos-11, width+20, 45, Color(0,0,0,200) )
	drawCompassLines()
	drawCurrentPositionCursor()
end)