local gc=love.graphics
local rnd,sin,cos=math.random,math.sin,math.cos
local tau=math.pi*2

local state
local timer
local ang,pos
local hit,dist
local side,count
local needReset

local function new()
	if needReset then
		side=math.max(side-2,6)
		needReset=false
	else
		side=side+1
	end
	count=0
	for c=1,side do
		hit[c]=0
		dist[c]=rnd(80,270)+637.5
	end
end

scene={}

function scene.sceneInit()
	state=0
	ang,pos=0,-tau/4
	timer=50
	hit,dist={},{}
	side=rnd(3,6)*2
	needReset=true
	for c=1,side,2 do
		hit[c],hit[c+1]=rnd(2),rnd(2)
		dist[c],dist[c+1]=226,126
	end
	BG.set("light")
	BGM.play("dream")
	love.keyboard.setKeyRepeat(false)
end
function scene.sceneBack()
	love.keyboard.setKeyRepeat(true)
end

function scene.keyDown(k)
	if k=="escape"then
		SCN.back()
	else

	end
	if k~="space"then return end
	if state==0 then--main
		if timer==0 then
			state=1
		end
	elseif state==3 then--play
		local c=(math.floor((pos-ang)*side/tau)-1)%side+1
		if hit[c]==0 then
			hit[c]=1
			count=count+1
			SFX.play(side<26 and"ren_"..rnd(5)or"ren_"..rnd(6,11))
			if count>=12 then
				SFX.play("ren_mega",(count-11)/15)
			end
			if count==side then
				state=1
				SFX.play("spin_0")
			else
				SFX.play("lock")
			end
		else
			hit[c]=2
			SFX.play("emit")
			needReset=true
			state=1
		end
	end
end
function scene.mouseDown(_,_,k)
	if k==1 then
		scene.keyDown("space")
	elseif k==2 then
		scene.keyDown("escape")
	end
end
function scene.touchDown()
	scene.keyDown("space")
end

function scene.update()
	if state==0 then--main
		ang=ang-.02
		if ang>0 then ang=ang-tau end
		if pos<ang then pos=pos+tau end
		if timer>0 then timer=timer-1 end
	elseif state==1 or state==2 then--zoom
		ang=ang+.02+timer/260
		pos=pos-.016
		if ang>0 then ang=ang-tau end
		if pos<ang then pos=pos+tau end
		if state==1 then
			for c=1,side do
				dist[c]=dist[c]+timer/2
			end
			timer=timer+1
			if timer==50 then
				state=2
				new()
			end
		else
			for c=1,side do
				dist[c]=dist[c]-timer/2
			end
			timer=timer-1
			if timer==0 then
				state=3
			end
		end
	elseif state==3 then--play
		ang=ang+.02
		pos=pos-.016
		if ang>0 then
			ang=ang-tau
		end
		if pos<ang then
			pos=pos+tau
		end
	end
end

function scene.draw()
	gc.setColor(0,0,0,1-timer/50)
	setFont(80)
	mStr(side,640,300)
	gc.polygon("fill",
		640+cos(pos-.03)*300,360+sin(pos-.03)*300,
		640+cos(pos)*285,360+sin(pos)*285,
		640+cos(pos+.03)*300,360+sin(pos+.03)*300
	)
	gc.setLineWidth(4)
	for i=1,side do
		local dx=cos(ang+tau*i/side)*dist[i]
		local dy=sin(ang+tau*i/side)*dist[i]
		local dX=cos(ang+tau*(i%side+1)/side)*dist[i%side+1]
		local dY=sin(ang+tau*(i%side+1)/side)*dist[i%side+1]
		gc.setColor(0,0,0,.12)
		gc.line(640,360,640+dx,360+dy)
		if hit[i]==0 then gc.setColor(0,0,0,.3)
		elseif hit[i]==1 then gc.setColor(.8,0,0)
		elseif hit[i]==2 then gc.setColor(.4,0,.8)
		end
		gc.line(640+dx,360+dy,640+dX,360+dY)
	end
	if state==0 then
		gc.setColor(0,0,0,1-timer/50)
		setFont(30)
		mStr(MOBILE and"Touch to Start"or"Press space to Start",640,630)
	else
		gc.setColor(0,0,0,timer/50)
		gc.print("POLYFORGE",20,620)
		setFont(30)
		gc.print("Idea by ImpactBlue Studios",860,630)
		gc.print("n-Spire ver. & ported & improved by MrZ",670,670)
	end
end

scene.widgetList={
	WIDGET.newKey{name="back",x=1140,y=60,w=170,h=80,color="black",font=40,code=pressKey"escape"},
}

return scene