local gc=love.graphics
local function check_tsd(P)
	local C=P.lastPiece
	if C.row>0 then
		if C.id==5 and C.row==2 and C.spin then
			if TABLE.find(P.modeData.history,C.centX)then
				P:showText("STACK",0,-140,40,'flicker',.3)
				P:lose()
			else
				P.modeData.tsd=P.modeData.tsd+1
				table.insert(P.modeData.history,1,C.centX)
				P.modeData.history[5]=nil
			end
		else
			P:lose()
		end
	end
end

return{
	color=COLOR.lYellow,
	env={
		drop=60,lock=60,
		freshLimit=15,
		dropPiece=check_tsd,
		task=function(P)P.modeData.history={}end,
		ospin=false,
		bg='matrix',bgm='vapor',
	},
	mesDisp=function(P)
		setFont(60)
		mStr(P.modeData.tsd,63,250)
		mText(drawableText.tsd,63,315)
		PLY.draw.applyField(P)
		local L=P.modeData.history
		for i=1,#L do
			gc.setColor(1,.5,.5,.3-i*.05)
			gc.rectangle('fill',30*L[i]-30,0,30,600)
		end
		PLY.draw.cancelField(P)
	end,
	score=function(P)return{P.modeData.tsd,P.stat.time}end,
	scoreDisp=function(D)return D[1].."TSD   "..STRING.time(D[2])end,
	comp=function(a,b)return a[1]>b[1]or a[1]==b[1]and a[2]<b[2]end,
	getRank=function(P)
		local T=P.modeData.tsd
		return
		T>=20 and 5 or
		T>=18 and 4 or
		T>=16 and 3 or
		T>=13 and 2 or
		T>=10 and 1 or
		T>=4 and 0
	end,
}