-- taken from http://code.google.com/p/hedgewars/wiki/LuaDrawing

 PointsBuffer = ''  -- A string to accumulate points in

 function AddPoint(x, y, width, erase)

     PointsBuffer = PointsBuffer .. string.char(band(x,0xff00) / 256 , band(x,0xff) , band(y,0xff00) / 256 , band(y,0xff))

     if width then

         width = bor(width,0x80)

         if erase then

             width = bor(width,0x40)

         end

         PointsBuffer = PointsBuffer .. string.char(width)

     else

         PointsBuffer = PointsBuffer .. string.char(0)

     end

     if #PointsBuffer > 245 then

         ParseCommand('draw '..PointsBuffer)

         PointsBuffer = ''

     end

 end

 function FlushPoints()

     if #PointsBuffer > 0 then

         ParseCommand('draw '..PointsBuffer)

         PointsBuffer = ''

     end

 end

local ta_pointsize = 63

local ta_radius = (ta_pointsize * 10 + 6) / 2

local sqrttwo = math.sqrt(2)

-- creates round test area

function AddTestArea(testarea)

	step = 100

	xstep = step * testarea["xdir"]

	ystep = step * testarea["ydir"]

	x = testarea["x"]

	y = testarea["y"]

	if xstep * ystep ~= 0 then

		xstep = math.floor(xstep / sqrttwo)

		ystep = math.floor(ystep / sqrttwo)

	end

	AddPoint(x, y, ta_pointsize);

	AddPoint(x + xstep, y + ystep, ta_pointsize, true);

end

-- vertical test areas

local taa_v1 = {x= 350, y= 400, xdir= 0, ydir= 1}

local taa_v2 = {x= 350, y=1500, xdir= 0, ydir=-1}

-- horizontal test areas

local taa_h1 = {x=1150, y= 400, xdir= 1, ydir= 0}

local taa_h2 = {x=1200, y=1100, xdir=-1, ydir= 0}

-- diagonal test areas

local taa_d1 = {x=2200, y= 400, xdir= 1, ydir= 1}

local taa_d2 = {x=2000, y=1500, xdir= 1, ydir=-1}

local taa_d3 = {x=3300, y= 400, xdir=-1, ydir= 1}

local taa_d4 = {x=3300, y=1500, xdir=-1, ydir=-1}

-- fail counter

local nfailed = 0

local nspawned = 0

local ndied = 0

function onGameInit()

	-- At first we have to overwrite/set some global variables

	-- that define the map, the game has to load, as well as

	-- other things such as the game rules to use, etc.

	-- Things we don't modify here will use their default values.

	-- The base number for the random number generator

	Seed = 1

	-- The map to be played

	MapGen = 2

	-- The theme to be used

	Theme = "Bamboo"

	-- Game settings and rules

	EnableGameFlags(gfOneClanMode, gfDisableWind, gfDisableLandObjects, gfDisableGirders, gfSolidLand)

	CaseFreq = 0

	MinesNum = 0

	Explosives = 0

	-- No damage please

	DamagePercent = 1

	-- Draw Map

	AddPoint(10,30,0) -- hog spawn platform

	-- test areas

	AddTestArea(taa_v1)

	AddTestArea(taa_v2)

	AddTestArea(taa_h1)

	AddTestArea(taa_h2)

	AddTestArea(taa_d1)

	AddTestArea(taa_d2)

	AddTestArea(taa_d3)

	AddTestArea(taa_d4)

	FlushPoints()

	-- Create the player team

	AddTeam("'Zooka Team", 14483456, "Simple", "Island", "Default")

	-- And add a hog to it

	player = AddHog("Hunter", 0, 1, "NoHat")

	-- place it on how spawn platform

	SetGearPosition(player, 10, 10)

end

-- xdir/ydir is direction in which to fire the drills

function SpawnDrillRocketArray(testarea)

	xdir = testarea["xdir"]

	ydir = testarea["ydir"]

	centerx = testarea["x"]

	centery = testarea["y"]

	distance = 23

	d = distance

	radius = ta_radius

	speed = 900000;

	local xmin, xmax, ymin, ymax

	if (xdir ~= 0) and (ydir ~= 0) then

		d = d / sqrttwo

		radius = radius / sqrttwo

		speed = math.floor(speed / sqrttwo)

	end

	centerx = centerx - (xdir * (radius + 20))

	centery = centery - (ydir * (radius + 20))

	radius = radius - 6

	xn = ydir

	yn = -xdir

	startx = centerx - (radius * xn)

	starty = centery - (radius * yn)

	endx = centerx + (radius * xn)

	endy = centery + (radius * yn)

	-- spawn loop

	x = startx

	y = starty

	xd = d * xn

	yd = d * yn

	if (xd < 0) and (startx < endx) then x = endx end

	if (yd < 0) and (starty < endy) then y = endy end

	nsteps = math.floor(math.max(math.abs(startx - endx),math.abs(starty - endy)) / d)

	for i = 1, nsteps, 1 do

		AddGear(math.floor(x), math.floor(y), gtDrill, gsttmpFlag * (i % 2), speed * xdir, speed * ydir, 0)

		nspawned = nspawned + 1

		x = x + xd

		y = y + yd

	end

end

function onGearDelete(gear)

	if GetGearType(gear) == gtDrill then

		-- the way to check state will change in API at some point

		if band(GetState(gear), gsttmpFlag) == 0 then

			-- regular drill rocket

			if (GetTimer(gear) < 2000) or (GetTimer(gear) > 3000) then

				nfailed = nfailed + 1

			end

		else

			-- airstrike drill rocket

			if GetTimer(gear) > 0 then

				nfailed = nfailed + 1

			end

		end

		ndied = ndied + 1

		if ndied == nspawned then

			WriteLnToConsole('TESTRESULT: ' .. nfailed .. ' of ' .. nspawned .. ' drill rockets did not explode as expected')

			if (nfailed > 0) then

				EndLuaTest(TEST_FAILED)

			else

				EndLuaTest(TEST_SUCCESSFUL)

			end

		end

	end

end

function onGameStart()

	SetGravity(1)

	SpawnDrillRocketArray(taa_h1)

	SpawnDrillRocketArray(taa_h2)

	SpawnDrillRocketArray(taa_v1)

	SpawnDrillRocketArray(taa_v2)

	SpawnDrillRocketArray(taa_d1)

	SpawnDrillRocketArray(taa_d2)

	SpawnDrillRocketArray(taa_d3)

	SpawnDrillRocketArray(taa_d4)

end