/obj/machinery/quantumpad
	name = "quantum pad"
	desc = "A bluespace quantum-linked telepad used for teleporting objects to other quantum pads."
	icon = 'icons/obj/telescience.dmi'
	icon_state = "qpad-idle"
	anchored = TRUE
	use_power = IDLE_POWER_USE
	idle_power_usage = 200
	active_power_usage = 5000
	obj_flags = CAN_BE_HIT | UNIQUE_RENAME
	circuit = /obj/item/circuitboard/machine/quantumpad
	var/teleport_cooldown = 400 //30 seconds base due to base parts
	var/teleport_speed = 50
	var/last_teleport //to handle the cooldown
	var/teleporting = 0 //if it's in the process of teleporting
	var/power_efficiency = 1
	var/obj/machinery/quantumpad/linked_pad

	//mapping
	var/static/list/mapped_quantum_pads = list()
	var/map_pad_id = "" as text //what's my name
	var/map_pad_link_id = "" as text //who's my friend

/obj/machinery/quantumpad/Initialize()
	. = ..()
	if(map_pad_id)
		mapped_quantum_pads[map_pad_id] = src

/obj/machinery/quantumpad/Destroy()
	mapped_quantum_pads -= map_pad_id
	return ..()

/obj/machinery/quantumpad/RefreshParts()
	var/E = 0
	for(var/obj/item/stock_parts/capacitor/C in component_parts)
		E += C.rating
	power_efficiency = E
	E = 0
	for(var/obj/item/stock_parts/manipulator/M in component_parts)
		E += M.rating
	teleport_speed = initial(teleport_speed)
	teleport_speed -= (E*10)
	teleport_cooldown = initial(teleport_cooldown)
	teleport_cooldown -= (E * 100)

/obj/machinery/quantumpad/attackby(obj/item/I, mob/user, params)
	if(default_deconstruction_screwdriver(user, "pad-idle-o", "qpad-idle", I))
		return

	if(panel_open)
		if(istype(I, /obj/item/device/multitool))
			var/obj/item/device/multitool/M = I
			M.buffer = src
			to_chat(user, "<span class='notice'>You save the data in [I]'s buffer.</span>")
			return 1
	else if(istype(I, /obj/item/device/multitool))
		var/obj/item/device/multitool/M = I
		if(istype(M.buffer, /obj/machinery/quantumpad))
			linked_pad = M.buffer
			to_chat(user, "<span class='notice'>You link [src] to the one in [I]'s buffer.</span>")
			return 1

	if(exchange_parts(user, I))
		return

	if(default_deconstruction_crowbar(I))
		return

	return ..()

/obj/machinery/quantumpad/attack_hand(mob/user)
	if(panel_open)
		to_chat(user, "<span class='warning'>The panel must be closed before operating this machine!</span>")
		return

	if(!linked_pad || QDELETED(linked_pad))
		if(!map_pad_link_id || !initMappedLink())
			to_chat(user, "<span class='warning'>There is no linked pad!</span>")
			return

	if(world.time < last_teleport + teleport_cooldown)
		to_chat(user, "<span class='warning'>[src] is recharging power. Please wait [DisplayTimeText(last_teleport + teleport_cooldown - world.time)].</span>")
		return

	if(teleporting)
		to_chat(user, "<span class='warning'>[src] is charging up. Please wait.</span>")
		return

	if(linked_pad.teleporting)
		to_chat(user, "<span class='warning'>Linked pad is busy. Please wait.</span>")
		return

	if(linked_pad.stat & NOPOWER)
		to_chat(user, "<span class='warning'>Linked pad is not responding to ping.</span>")
		return
	src.add_fingerprint(user)
	doteleport(user)

/obj/machinery/quantumpad/proc/sparks()
	var/datum/effect_system/spark_spread/s = new /datum/effect_system/spark_spread
	s.set_up(5, 1, get_turf(src))
	s.start()

/obj/machinery/quantumpad/attack_ghost(mob/dead/observer/ghost)
	if(!linked_pad && map_pad_link_id)
		initMappedLink()
	if(linked_pad)
		ghost.forceMove(get_turf(linked_pad))

/obj/machinery/quantumpad/proc/doteleport(mob/user)
	if(linked_pad)
		playsound(get_turf(src), 'sound/weapons/flash.ogg', 25, 1)
		teleporting = 1

		spawn(teleport_speed)
			if(!src || QDELETED(src))
				teleporting = 0
				return
			if(stat & NOPOWER)
				to_chat(user, "<span class='warning'>[src] is unpowered!</span>")
				teleporting = 0
				return
			if(!linked_pad || QDELETED(linked_pad) || linked_pad.stat & NOPOWER)
				to_chat(user, "<span class='warning'>Linked pad is not responding to ping. Teleport aborted.</span>")
				teleporting = 0
				return

			teleporting = 0
			last_teleport = world.time

			// use a lot of power
			use_power(10000 / power_efficiency)
			sparks()
			linked_pad.sparks()

			flick("qpad-beam", src)
			playsound(get_turf(src), 'sound/weapons/emitter2.ogg', 25, 1, extrarange = 3, falloff = 5)
			flick("qpad-beam", linked_pad)
			playsound(get_turf(linked_pad), 'sound/weapons/emitter2.ogg', 25, 1, extrarange = 3, falloff = 5)
			for(var/atom/movable/ROI in get_turf(src))
				// if is anchored, don't let through
				if(ROI.anchored)
					if(isliving(ROI))
						var/mob/living/L = ROI
						if(L.buckled)
							// TP people on office chairs
							if(L.buckled.anchored)
								continue
						else
							continue
					else if(!isobserver(ROI))
						continue
				do_teleport(ROI, get_turf(linked_pad))

/obj/machinery/quantumpad/proc/initMappedLink()
	. = FALSE
	var/obj/machinery/quantumpad/link = mapped_quantum_pads[map_pad_link_id]
	if(link)
		linked_pad = link
		. = TRUE

/obj/item/paper/guides/quantumpad
	name = "Quantum Pad For Dummies"
	info = "<center><b>Dummies Guide To Quantum Pads</b></center><br><br><center>Do you hate the concept of having to use your legs, let alone <i>walk</i> to places? Well, with the Quantum Pad (tm), never again will the fear of cardio keep you from going places!<br><br><c><b>How to set up your Quantum Pad(tm)</b></center><br><br>1.Unscrew the Quantum Pad(tm) you wish to link.<br>2. Use your multi-tool to cache the buffer of the Quantum Pad(tm) you wish to link.<br>3. Apply the multi-tool to the secondary Quantum Pad(tm) you wish to link to the first Quantum Pad(tm)<br><br><center>If you followed these instructions carefully, your Quantum Pad(tm) should now be properly linked together for near-instant movement across the station! Bear in mind that this is technically a one-way teleport, so you'll need to do the same process with the secondary pad to the first one if you wish to travel between both.</center>"