function get_rad_protection()
	local hit_type_rad = HitTypeID["Radiation"]
	local actor = db.actor

	--Calculate new power
	local hit_additional = 0
	local defense = arszi_radiation and arszi_radiation.settings.radiationPenetrationDefense or 1

	-- Outfit protection
	local outfit = actor:item_in_slot(7)
	if outfit then
		local c_obj = outfit:cast_CustomOutfit()
		local prot = c_obj and c_obj:GetDefHitTypeProtection(hit_type_rad) or 0

		hit_additional = hit_additional + prot * defense * 100
	end

	-- Helmet protection
	local helm = actor:item_in_slot(12)
	if helm then
		local c_obj = helm:cast_Helmet()
		local prot = c_obj and c_obj:GetDefHitTypeProtection(hit_type_rad) or 0

		hit_additional = hit_additional + prot * defense * 100
	end

	-- Artefacts protection
	actor:iterate_belt(function(owner, obj)
		local sec = obj:section()
		local cond = obj:condition()
		local immunities_sec = SYS_GetParam(0, sec, "hit_absorbation_sect", sec)
		local prot = SYS_GetParam(2, immunities_sec, "radiation_immunity", 0) * cond

		hit_additional = hit_additional + prot * defense * 100
	end)

	-- Booster protection
	actor:cast_Actor():conditions():BoosterForEach(function(booster_type, booster_time, booster_value)
		-- printf("%s, %s, %s", booster_type, booster_time, booster_value)
		if booster_type == BoosterID["RadiationProtection"] then
			-- printf("booster_value %s", booster_value)
			hit_additional = hit_additional + booster_value * defense * 100
		end
	end)

	-- Final modifier
	local hit_modifier = hit_additional >= 0 and 1 + hit_additional or 1 / (1 - hit_additional)
	return hit_modifier
end

function actor_on_before_hit(s_hit)
	-- Check for Arszi Radiation Demonized Edition MCM
	if arszi_radiation and not arszi_radiation.settings.radiationPenetration then
		return
	end 

	local hit_type_rad = HitTypeID["Radiation"]

	--Check if damage source is radiation
	local hit_power = s_hit.power * (arszi_radiation and arszi_radiation.settings.radiationPenetrationAmount or 0.15)
	if s_hit.type ~= hit_type_rad or hit_power <= 0 then
		return
	end

	local actor_hit_power = hit_power / get_rad_protection()

	-- printf("rad hit %s", actor_hit_power)
	db.actor:change_radiation(actor_hit_power)
end

enabled = true
if arszi_radiation then
	arszi_before_hit = arszi_radiation.actor_on_before_hit
	arszi_radiation.actor_on_before_hit = function(s_hit)
		arszi_before_hit(s_hit)
		actor_on_before_hit(s_hit)
	end
	enabled = false
end

function on_game_start()
	if enabled then
		RegisterScriptCallback("actor_on_before_hit", actor_on_before_hit)
	end
end