/obj/item/onetankbomb
	name = "bomb"
	icon = 'icons/obj/tank.dmi'
	item_state = "assembly"
	throwforce = 5
	w_class = WEIGHT_CLASS_NORMAL
	throw_speed = 2
	throw_range = 4
	flags = CONDUCT //Copied this from old code, so this may or may not be necessary
	var/status = FALSE   //FALSE - not readied //TRUE - bomb finished with welder
	var/obj/item/assembly_holder/bombassembly = null   //The first part of the bomb is an assembly holder, holding an igniter+some device
	var/obj/item/tank/bombtank = null //the second part of the bomb is a plasma tank
	origin_tech = "materials=1;engineering=1"

/obj/item/onetankbomb/examine(mob/user)
	. = ..()
	. += bombtank.examine(user)

/obj/item/onetankbomb/update_icon_state()
	if(bombtank)
		icon_state = bombtank.icon_state

/obj/item/onetankbomb/update_overlays()
	. = ..()
	if(bombassembly)
		. += bombassembly.icon_state
		. += bombassembly.overlays
		. += "bomb_assembly"

/obj/item/onetankbomb/attackby(obj/item/W, mob/user, params)
	if(istype(W, /obj/item/analyzer))
		bombtank.attackby(W, user, params)
		return
	return ..()

/obj/item/onetankbomb/wrench_act(mob/user, obj/item/I)	//This is basically bomb assembly code inverted. apparently it works.
	if(status)
		return
	. = TRUE
	if(!I.use_tool(src, user, 0, volume = I.tool_volume))
		return
	to_chat(user, "<span class='notice'>You disassemble [src].</span>")
	bombassembly.forceMove(user.loc)
	bombassembly.master = null
	bombassembly = null
	bombtank.forceMove(user.loc)
	bombtank.master = null
	bombtank = null
	qdel(src)

/obj/item/onetankbomb/welder_act(mob/user, obj/item/I)
	. = TRUE
	if(!I.use_tool(src, user, volume = I.tool_volume))
		return
	if(!status)
		status = TRUE
		investigate_log("[key_name(user)] welded a single tank bomb. Temperature: [bombtank.air_contents.temperature-T0C]", INVESTIGATE_BOMB)
		log_game("[key_name(user)] welded a single tank bomb. Temperature: [bombtank.air_contents.temperature - T0C]")
		to_chat(user, "<span class='notice'>A pressure hole has been bored to [bombtank] valve. [bombtank] can now be ignited.</span>")
		add_attack_logs(user, src, "welded a single tank bomb. Temperature: [bombtank.air_contents.temperature-T0C]", ATKLOG_FEW)
	else
		status = FALSE
		investigate_log("[key_name(user)] unwelded a single tank bomb. Temperature: [bombtank.air_contents.temperature-T0C]", INVESTIGATE_BOMB)
		add_attack_logs(user, src, "unwelded a single tank bomb. Temperature: [bombtank.air_contents.temperature-T0C]", ATKLOG_ALMOSTALL)
		to_chat(user, "<span class='notice'>The hole has been closed.</span>")


/obj/item/onetankbomb/attack_self(mob/user) //pressing the bomb accesses its assembly
	bombassembly.attack_self(user, 1)
	add_fingerprint(user)
	return

/obj/item/onetankbomb/HasProximity(atom/movable/AM)
	if(bombassembly)
		bombassembly.HasProximity(AM)

/obj/item/onetankbomb/Crossed(atom/movable/AM, oldloc) //for mousetraps
	if(bombassembly)
		bombassembly.Crossed(AM, oldloc)

/obj/item/onetankbomb/on_found(mob/finder) //for mousetraps
	if(bombassembly)
		bombassembly.on_found(finder)

/obj/item/onetankbomb/hear_talk(mob/living/M, list/message_pieces)
	if(bombassembly)
		bombassembly.hear_talk(M, message_pieces)

/obj/item/onetankbomb/hear_message(mob/living/M, msg)
	if(bombassembly)
		bombassembly.hear_message(M, msg)

// ---------- Procs below are for tanks that are used exclusively in 1-tank bombs ----------

/obj/item/tank/proc/bomb_assemble(W, user)	//Bomb assembly proc. This turns assembly+tank into a bomb
	var/obj/item/assembly_holder/S = W
	var/mob/M = user
	if(!S.secured)										//Check if the assembly is secured
		return
	if(isigniter(S.a_left) == isigniter(S.a_right))		//Check if either part of the assembly has an igniter, but if both parts are igniters, then fuck it
		return

	var/obj/item/onetankbomb/R = new /obj/item/onetankbomb(loc)

	M.drop_item()			//Remove the assembly from your hands
	M.remove_from_mob(src)	//Remove the tank from your character,in case you were holding it
	M.put_in_hands(R)		//Equips the bomb if possible, or puts it on the floor.

	R.bombassembly = S	//Tell the bomb about its assembly part
	S.master = R		//Tell the assembly about its new owner
	S.forceMove(R)			//Move the assembly out of the fucking way

	R.bombtank = src	//Same for tank
	master = R
	forceMove(R)
	R.update_icon()
	return

/obj/item/tank/proc/detonate()	//This happens when a bomb is told to explode
	var/fuel_moles = air_contents.toxins + air_contents.oxygen / 6
	var/strength = 1

	var/turf/ground_zero = get_turf(loc)
	loc = null

	if(air_contents.temperature > (T0C + 400))
		strength = (fuel_moles/15)

		if(strength >=1)
			explosion(ground_zero, round(strength,1), round(strength*2,1), round(strength*3,1), round(strength*4,1))
		else if(strength >=0.5)
			explosion(ground_zero, 0, 1, 2, 4)
		else if(strength >=0.2)
			explosion(ground_zero, -1, 0, 1, 2)
		else
			ground_zero.assume_air(air_contents)
			ground_zero.hotspot_expose(1000, 125)

	else if(air_contents.temperature > (T0C + 250))
		strength = (fuel_moles/20)

		if(strength >=1)
			explosion(ground_zero, 0, round(strength,1), round(strength*2,1), round(strength*3,1))
		else if(strength >=0.5)
			explosion(ground_zero, -1, 0, 1, 2)
		else
			ground_zero.assume_air(air_contents)
			ground_zero.hotspot_expose(1000, 125)

	else if(air_contents.temperature > (T0C + 100))
		strength = (fuel_moles/25)

		if(strength >=1)
			explosion(ground_zero, -1, 0, round(strength,1), round(strength*3,1))
		else
			ground_zero.assume_air(air_contents)
			ground_zero.hotspot_expose(1000, 125)

	else
		ground_zero.assume_air(air_contents)
		ground_zero.hotspot_expose(1000, 125)

	air_update_turf()
	if(master)
		qdel(master)
	qdel(src)

/obj/item/tank/proc/release()	//This happens when the bomb is not welded. Tank contents are just spat out.
	var/datum/gas_mixture/removed = air_contents.remove(air_contents.total_moles())
	var/turf/simulated/T = get_turf(src)
	if(!T)
		return
	T.assume_air(removed)
	air_update_turf()