/*
Contains helper procs for airflow, handled in /connection_group.
*/

mob/var/tmp/last_airflow_stun = 0
mob/proc/airflow_stun()
	if(stat == 2)
		return 0
	if(last_airflow_stun > world.time - vsc.airflow_stun_cooldown)	return 0

	if(!(status_flags & CANSTUN) && !(status_flags & CANWEAKEN))
		src << "<span class='notice'>You stay upright as the air rushes past you.</span>"
		return 0
	if(buckled)
		src << "<span class='notice'>Air suddenly rushes past you!</span>"
		return 0
	if(!lying)
		src << "<span class='warning'>The sudden rush of air knocks you over!</span>"
	Weaken(5)
	last_airflow_stun = world.time

mob/living/silicon/airflow_stun()
	return

mob/living/carbon/slime/airflow_stun()
	return

mob/living/carbon/human/airflow_stun()
	if(shoes)
		if(shoes.item_flags & NOSLIP) return 0
	..()

atom/movable/proc/check_airflow_movable(n)

	if(anchored && !ismob(src)) return 0

	if(!istype(src,/obj/item) && n < vsc.airflow_dense_pressure) return 0

	return 1

mob/check_airflow_movable(n)
	if(n < vsc.airflow_heavy_pressure)
		return 0
	return 1

mob/abstract/observer/check_airflow_movable()
	return 0

mob/living/silicon/check_airflow_movable()
	return 0


obj/item/check_airflow_movable(n)
	. = ..()
	switch(w_class)
		if(2)
			if(n < vsc.airflow_lightest_pressure) return 0
		if(3)
			if(n < vsc.airflow_light_pressure) return 0
		if(4,5)
			if(n < vsc.airflow_medium_pressure) return 0

/atom/movable/var/tmp/turf/airflow_dest
/atom/movable/var/tmp/airflow_speed = 0
/atom/movable/var/tmp/airflow_time = 0
/atom/movable/var/tmp/last_airflow = 0

/atom/movable/proc/AirflowCanMove(n)
	return 1

/mob/AirflowCanMove(n)
	if(status_flags & GODMODE)
		return 0
	if(buckled)
		return 0
	var/obj/item/shoes = get_equipped_item(slot_shoes)
	if(istype(shoes) && (shoes.item_flags & NOSLIP))
		return 0
	return 1

/*
/atom/movable/proc/GotoAirflowDest(n)
	and
/atom/movable/proc/RepelAirflowDest(n)
	have been moved to SSairflow.

*/

atom/movable/proc/airflow_hit(atom/A)
	airflow_speed = 0
	airflow_dest = null

mob/airflow_hit(atom/A)
	for(var/mob/M in hearers(src))
		M.show_message("<span class='danger'>\The [src] slams into \a [A]!</span>",1,"<span class='danger'>You hear a loud slam!</span>",2)
	playsound(src.loc, "smash.ogg", 25, 1, -1)
	var/weak_amt = istype(A,/obj/item) ? A:w_class : rand(1,5) //Heheheh
	Weaken(weak_amt)
	. = ..()

obj/airflow_hit(atom/A)
	for(var/mob/M in hearers(src))
		M.show_message("<span class='danger'>\The [src] slams into \a [A]!</span>",1,"<span class='danger'>You hear a loud slam!</span>",2)
	playsound(src.loc, "smash.ogg", 25, 1, -1)
	. = ..()

obj/item/airflow_hit(atom/A)
	airflow_speed = 0
	airflow_dest = null

mob/living/carbon/human/airflow_hit(atom/A)
//	for(var/mob/M in hearers(src))
//		M.show_message("<span class='danger'>[src] slams into [A]!</span>",1,"<span class='danger'>You hear a loud slam!</span>",2)
	playsound(src.loc, "punch", 25, 1, -1)
	if (prob(33))
		loc:add_blood(src)
		bloody_body(src)
	var/b_loss = airflow_speed * vsc.airflow_damage

	var/blocked = run_armor_check("head","melee")
	apply_damage(b_loss/3, BRUTE, "head", blocked, 0, "Airflow")

	blocked = run_armor_check("chest","melee")
	apply_damage(b_loss/3, BRUTE, "chest", blocked, 0, "Airflow")

	blocked = run_armor_check("groin","melee")
	apply_damage(b_loss/3, BRUTE, "groin", blocked, 0, "Airflow")

	if(airflow_speed > 10)
		Paralyse(round(airflow_speed * vsc.airflow_stun))
		Stun(paralysis + 3)
	else
		Stun(round(airflow_speed * vsc.airflow_stun/2))
	. = ..()

zone/proc/movables(list/origins)
	. = list()
	if (!origins || !origins.len)
		return

	var/static/list/movables_tcache = typecacheof(list(/obj/effect, /mob/abstract))

	var/atom/movable/AM
	for (var/testing_turf in contents)
		for (var/am in testing_turf)
			AM = am
			if (AM.simulated && !AM.anchored && !movables_tcache[AM.type])
				for (var/source_turf in origins)
					if (get_dist(testing_turf, source_turf) <= EDGE_KNOCKDOWN_MAX_DISTANCE)
						.[AM] = TRUE
						break

					CHECK_TICK