local base = piece 'base' 
local body = piece 'body' 
local top = piece 'top' 
local dish1 = piece 'dish1' 
local dish2 = piece 'dish2' 

local spGetUnitIsStunned = Spring.GetUnitIsStunned

local function still_building_p()
	local _,_,_,_,buildProgress = Spring.GetUnitHealth(unitID);
	if (buildProgress == 1) then return false; else return true; end
end

local function get_health_percent()
	local health,maxHealth = Spring.GetUnitHealth(unitID);
	return ((health / maxHealth) * 100);
end


local function SmokeUnit(healthpercent, sleeptime, smoketype)
	while still_building_p() do Sleep(400); end
	
	while (true) do
		local health_percent = get_health_percent();
		
		if (health_percent < 66) then
			local smoketype = 258;
			if (math.random(1, 66) < health_percent) then smoketype = 257; end
			Spring.UnitScript.EmitSfx(base, smoketype);
		end
		
		local sleep_time = health_percent * 50;
		if (sleep_time < 200) then 
		  sleep_time = 200; end
		Sleep(sleep_time);
	end
end

local stunned = 0

local function StunnedCheck()
	while true do
		if select(1, spGetUnitIsStunned(unitID)) and GetUnitValue(COB.ACTIVATION) == 1  then
			if  stunned and stunned == 1 then 
				stunned = 1;
				SetUnitValue(COB.ACTIVATION, 0)
			end
			stunned = 1;
		elseif stunned and stunned == 1  and not select(1, spGetUnitIsStunned(unitID)) and GetUnitValue(COB.ACTIVATION) ~= 1 then 
			stunned = 0;
			SetUnitValue(COB.ACTIVATION, 1) 
		end
		Sleep(250);
	end
end

local function Activate()
    if stunned and stunned == 1 then SetUnitValue(COB.ACTIVATION, 0) return end -- ADDED FOR STUNABLE
	Spin( top , y_axis, 0.500000 )
	Spin( dish1 , x_axis, 2.000000 )
	Spin( dish2 , x_axis, -2.000000 )
	state = 1
	
end

local function Deactivate()
	StopSpin( top , y_axis, 40.000000 )
	StopSpin( dish1 , x_axis, 40.000000 )
	StopSpin( dish2 , x_axis, -40.000000 )
	state = 0
end

function script.Create()
  	StartThread( Activate)
	StartThread(StunnedCheck)
	StartThread(SmokeUnit)
end

function script.Activate()
	StartThread( Activate)
end

function script.Deactivate()
	StartThread( Deactivate)
end

function script.Killed(recentDamage, maxHealth)
	local severity = recentDamage / maxHealth


	if  (severity <= .25)  then
	
		Explode(body, SFX.NONE)
		Explode(top, SFX.NONE)
		return 1 -- corpsetype
		
	elseif  (severity <= .50)  then
	
		Explode(body, SFX.SMOKE + SFX.FIRE + SFX.EXPLODE )
		Explode(top, SFX.SMOKE + SFX.FIRE + SFX.EXPLODE )
		return 2 -- corpsetype
	else
		Explode(body, SFX.SMOKE + SFX.FIRE + SFX.EXPLODE )
		Explode(top, SFX.SMOKE + SFX.FIRE + SFX.EXPLODE )
		return 3 -- corpsetype
	end
end