VOREStation/code/game/objects/items/weapons/policetape.dm

//Define all tape types in policetape.dm
/obj/item/taperoll
	name = "tape roll"
	icon = 'icons/policetape.dmi'
	icon_state = "rollstart"
	w_class = 2.0
	var/turf/start
	var/turf/end
	var/tape_type = /obj/item/tape
	var/icon_base

var/list/image/hazard_overlays
var/list/tape_roll_applications = list()

/obj/item/tape
	name = "tape"
	icon = 'icons/policetape.dmi'
	anchored = 1
	var/lifted = 0
	var/crumpled = 0
	var/icon_base

/obj/item/tape/New()
	..()
	if(!hazard_overlays)
		hazard_overlays = list()
		hazard_overlays["[NORTH]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "N")
		hazard_overlays["[EAST]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "E")
		hazard_overlays["[SOUTH]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "S")
		hazard_overlays["[WEST]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "W")

/obj/item/taperoll/police
	name = "police tape"
	desc = "A roll of police tape used to block off crime scenes from the public."
	icon_state = "police_start"
	tape_type = /obj/item/tape/police
	icon_base = "police"

/obj/item/tape/police
	name = "police tape"
	desc = "A length of police tape.  Do not cross."
	req_access = list(access_security)
	icon_base = "police"

/obj/item/taperoll/engineering
	name = "engineering tape"
	desc = "A roll of engineering tape used to block off working areas from the public."
	icon_state = "engineering_start"
	tape_type = /obj/item/tape/engineering
	icon_base = "engineering"

/obj/item/tape/engineering
	name = "engineering tape"
	desc = "A length of engineering tape. Better not cross it."
	req_one_access = list(access_engine,access_atmospherics)
	icon_base = "engineering"

/obj/item/taperoll/attack_self(mob/user as mob)
	if(icon_state == "[icon_base]_start")
		start = get_turf(src)
		usr << "<span class='notice'>You place the first end of \the [src].</span>"
		icon_state = "[icon_base]_stop"
	else
		icon_state = "[icon_base]_start"
		end = get_turf(src)
		if(start.y != end.y && start.x != end.x || start.z != end.z)
			usr << "<span class='notice'>\The [src] can only be laid horizontally or vertically.</span>"
			return

		var/turf/cur = start
		var/dir
		if (start.x == end.x)
			var/d = end.y-start.y
			if(d) d = d/abs(d)
			end = get_turf(locate(end.x,end.y+d,end.z))
			dir = "v"
		else
			var/d = end.x-start.x
			if(d) d = d/abs(d)
			end = get_turf(locate(end.x+d,end.y,end.z))
			dir = "h"

		var/can_place = 1
		while (cur!=end && can_place)
			if(cur.density == 1)
				can_place = 0
			else if (istype(cur, /turf/space))
				can_place = 0
			else
				for(var/obj/O in cur)
					if(!istype(O, /obj/item/tape) && O.density)
						can_place = 0
						break
			cur = get_step_towards(cur,end)
		if (!can_place)
			usr << "<span class='warning'>You can't run \the [src] through that!</span>"
			return

		cur = start
		var/tapetest = 0
		while (cur!=end)
			for(var/obj/item/tape/Ptest in cur)
				if(Ptest.icon_state == "[Ptest.icon_base]_[dir]")
					tapetest = 1
			if(tapetest != 1)
				var/obj/item/tape/P = new tape_type(cur)
				P.icon_state = "[P.icon_base]_[dir]"
			cur = get_step_towards(cur,end)
		usr << "<span class='notice'>You finish placing \the [src].</span>"

/obj/item/taperoll/afterattack(var/atom/A, mob/user as mob, proximity)
	if(!proximity)
		return

	if (istype(A, /obj/machinery/door/airlock))
		var/turf/T = get_turf(A)
		var/obj/item/tape/P = new tape_type(T.x,T.y,T.z)
		P.loc = locate(T.x,T.y,T.z)
		P.icon_state = "[src.icon_base]_door"
		P.layer = 3.2
		user << "<span class='notice'>You finish placing \the [src].</span>"

	if (istype(A, /turf/simulated/floor) ||istype(A, /turf/unsimulated/floor))
		var/turf/F = A
		var/direction = user.loc == F ? user.dir : turn(user.dir, 180)
		var/icon/hazard_overlay = hazard_overlays["[direction]"]
		if(tape_roll_applications[F] == null)
			tape_roll_applications[F] = 0

		if(tape_roll_applications[F] & direction) // hazard_overlay in F.overlays wouldn't work.
			user.visible_message("\The [user] uses the adhesive of \the [src] to remove area markings from \the [F].", "You use the adhesive of \the [src] to remove area markings from \the [F].")
			F.overlays -= hazard_overlay
			tape_roll_applications[F] &= ~direction
		else
			user.visible_message("\The [user] applied \the [src] on \the [F] to create area markings.", "You apply \the [src] on \the [F] to create area markings.")
			F.overlays |= hazard_overlay
			tape_roll_applications[F] |= direction
		return

/obj/item/tape/proc/crumple()
	if(!crumpled)
		crumpled = 1
		icon_state = "[icon_state]_c"
		name = "crumpled [name]"

/obj/item/tape/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
	if(!lifted && ismob(mover))
		var/mob/M = mover
		add_fingerprint(M)
		if (!allowed(M))	//only select few learn art of not crumpling the tape
			M << "<span class='warning'>You are not supposed to go past [src]...</span>"
			crumple()
	return ..(mover)

/obj/item/tape/attackby(obj/item/weapon/W as obj, mob/user as mob)
	breaktape(W, user)

/obj/item/tape/attack_hand(mob/user as mob)
	if (user.a_intent == I_HELP && src.allowed(user))
		user.show_viewers("<span class='notice'>\The [user] lifts \the [src], allowing passage.</span>")
		crumple()
		lifted = 1
		spawn(200)
			lifted = 0
	else
		breaktape(null, user)



/obj/item/tape/proc/breaktape(obj/item/weapon/W as obj, mob/user as mob)
	if(user.a_intent == I_HELP && ((!can_puncture(W) && src.allowed(user))))
		user << "You can't break \the [src] with that!"
		return
	user.show_viewers("<span class='notice'>\The [user] breaks \the [src]!</span>")

	var/dir[2]
	var/icon_dir = src.icon_state
	if(icon_dir == "[src.icon_base]_h")
		dir[1] = EAST
		dir[2] = WEST
	if(icon_dir == "[src.icon_base]_v")
		dir[1] = NORTH
		dir[2] = SOUTH

	for(var/i=1;i<3;i++)
		var/N = 0
		var/turf/cur = get_step(src,dir[i])
		while(N != 1)
			N = 1
			for (var/obj/item/tape/P in cur)
				if(P.icon_state == icon_dir)
					N = 0
					qdel(P)
			cur = get_step(cur,dir[i])

	qdel(src)
	return