Ports Quantum Spin Inverter from TG. (#15846)

* ports bluespace swapper

* fixes materials so we can print quantum spin inverters

* its diamond not diamoond

code/game/objects/items/devices/swapper.dm

@@ -0,0 +1,112 @@
+//ported from TG, credit to XDTM
+/obj/item/swapper
+	name = "quantum spin inverter"
+	desc = "An experimental device that is able to swap the locations of two entities by switching their particles' spin values. Must be linked to another device to function."
+	icon = 'icons/obj/device.dmi'
+	icon_state = "swapper"
+	item_state = "electronic"
+	w_class = WEIGHT_CLASS_SMALL
+	item_flags = NOBLUDGEON
+	lefthand_file = 'icons/mob/inhands/misc/devices_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/misc/devices_righthand.dmi'
+
+	var/cooldown = 300
+	var/next_use = 0
+	var/obj/item/swapper/linked_swapper
+
+/obj/item/swapper/Destroy()
+	if(linked_swapper)
+		linked_swapper.linked_swapper = null //*inception music*
+		linked_swapper.update_appearance()
+		linked_swapper = null
+	return ..()
+
+/obj/item/swapper/update_icon_state()
+	icon_state = "swapper[linked_swapper ? "-linked" : null]"
+	return ..()
+
+/obj/item/swapper/attackby(obj/item/I, mob/user, params)
+	if(istype(I, /obj/item/swapper))
+		var/obj/item/swapper/other_swapper = I
+		if(other_swapper.linked_swapper)
+			to_chat(user, span_warning("[other_swapper] is already linked. Break the current link to establish a new one."))
+			return
+		if(linked_swapper)
+			to_chat(user, span_warning("[src] is already linked. Break the current link to establish a new one."))
+			return
+		to_chat(user, span_notice("You establish a quantum link between the two devices."))
+		linked_swapper = other_swapper
+		other_swapper.linked_swapper = src
+		update_appearance()
+		linked_swapper.update_appearance()
+	else
+		return ..()
+
+/obj/item/swapper/attack_self(mob/living/user)
+	if(world.time < next_use)
+		to_chat(user, span_warning("[src] is still recharging."))
+		return
+	if(QDELETED(linked_swapper))
+		to_chat(user, span_warning("[src] is not linked with another swapper."))
+		return
+	playsound(src, 'sound/weapons/flash.ogg', 25, TRUE)
+	to_chat(user, span_notice("You activate [src]."))
+	playsound(linked_swapper, 'sound/weapons/flash.ogg', 25, TRUE)
+	if(ismob(linked_swapper.loc))
+		var/mob/holder = linked_swapper.loc
+		to_chat(holder, span_notice("[linked_swapper] starts buzzing."))
+	next_use = world.time + cooldown //only the one used goes on cooldown
+	addtimer(CALLBACK(src, .proc/swap, user), 25)
+
+/obj/item/swapper/examine(mob/user)
+	. = ..()
+	if(world.time < next_use)
+		. += span_warning("Time left to recharge: [DisplayTimeText(next_use - world.time)].")
+	if(linked_swapper)
+		. += span_notice("<b>Linked.</b> Alt-Click to break the quantum link.")
+	else
+		. += span_notice("<b>Not Linked.</b> Use on another quantum spin inverter to establish a quantum link.")
+
+/obj/item/swapper/AltClick(mob/living/user)
+	if(!user.canUseTopic(src, BE_CLOSE, NO_DEXTERY,, FALSE, !iscyborg(user))) //someone mispelled dexterity
+		return
+	to_chat(user, span_notice("You break the current quantum link."))
+	if(!QDELETED(linked_swapper))
+		linked_swapper.linked_swapper = null
+		linked_swapper.update_appearance()
+		linked_swapper = null
+	update_appearance()
+
+//Gets the topmost teleportable container
+/obj/item/swapper/proc/get_teleportable_container()
+	var/atom/movable/teleportable = src
+	while(ismovable(teleportable.loc))
+		var/atom/movable/AM = teleportable.loc
+		if(AM.anchored)
+			break
+		if(isliving(AM))
+			var/mob/living/L = AM
+			if(L.buckled)
+				if(L.buckled.anchored)
+					break
+				else
+					var/obj/buckled_obj = L.buckled
+					buckled_obj.unbuckle_mob(L)
+		teleportable = AM
+	return teleportable
+
+/obj/item/swapper/proc/swap(mob/user)
+	if(QDELETED(linked_swapper) || world.time < linked_swapper.cooldown)
+		return
+
+	var/atom/movable/A = get_teleportable_container()
+	var/atom/movable/B = linked_swapper.get_teleportable_container()
+	var/target_A = A.drop_location()
+	var/target_B = B.drop_location()
+
+	//TODO: add a sound effect or visual effect
+	if(do_teleport(A, target_B, channel = TELEPORT_CHANNEL_QUANTUM))
+		do_teleport(B, target_A, channel = TELEPORT_CHANNEL_QUANTUM)
+		if(ismob(B))
+			var/mob/M = B
+			to_chat(M, span_warning("[linked_swapper] activates, and you find yourself somewhere else."))

code/modules/research/designs/bluespace_designs.dm

@@ -115,3 +115,13 @@
 	build_path = /obj/item/pipe/bluespace
 	category = list("Bluespace Designs")
 	departmental_flags = DEPARTMENTAL_FLAG_SCIENCE | DEPARTMENTAL_FLAG_ENGINEERING
+
+/datum/design/swapper //ported from TG, credit to XDTM
+	name = "Quantum Spin Inverter"
+	desc = "An experimental device that is able to swap the locations of two entities by switching their particles' spin values. Must be linked to another device to function."
+	id = "swapper"
+	build_type = PROTOLATHE
+	materials = list(/datum/material/iron = 500, /datum/material/diamond = 1500, /datum/material/glass = 1000, /datum/material/bluespace = 2000, /datum/material/silver=1000)
+	build_path = /obj/item/swapper
+	category = list("Bluespace Designs")
+	departmental_flags = DEPARTMENTAL_FLAG_SCIENCE

code/modules/research/techweb/nodes/bluespace_nodes.dm

@@ -61,7 +61,7 @@
 	display_name = "Bluespace Travel"
 	description = "Application of Bluespace for static teleportation technology."
 	prereq_ids = list("adv_power", "adv_bluespace")
-	design_ids = list("tele_station", "tele_hub", "quantumpad", "quantum_keycard", "launchpad", "launchpad_console", "teleconsole", "roastingstick", "bluespace_pipe")
+	design_ids = list("tele_station", "tele_hub", "quantumpad", "quantum_keycard", "launchpad", "launchpad_console", "teleconsole", "roastingstick", "bluespace_pipe","swapper")
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 2500)
 
 /datum/techweb_node/unregulated_bluespace