Two singularities in the world can link on some occasions (#32193)

* 2 Singularities in the world at once have a 10% chance to link

* Sanity

* Sanity

* One important line

* Better selection method

* A white hole?

* A white hole?

* Requested name change

* Requested name change

* Fullstops

* Other.desc

* Sanity

* Changes method

* Fixes

* One line

* This counts too

* Make them act no matter what

* Crystal nerf

* Bracket

* Tweaks odds, does both ways

* While loop stuff, better way maybe

* Possible sanity

* Final stuff

Co-authored-by: kanef <kanef9x@protonmail.com>

code/game/objects/items.dm

@@ -1228,7 +1228,7 @@ var/global/list/image/blood_overlays = list()
 	return
 
 //handling the pulling of the item for singularity
-/obj/item/singularity_pull(S, current_size)
+/obj/item/singularity_pull(S, current_size, repel = FALSE)
 	if(flags & INVULNERABLE)
 		return
 	spawn(0) //this is needed or multiple items will be thrown sequentially and not simultaneously
@@ -1239,11 +1239,20 @@ var/global/list/image/blood_overlays = list()
 				return
 		if(current_size >= STAGE_FOUR)
 			//throw_at(S, 14, 3)
-			step_towards(src,S)
+			if(!repel)
+				step_towards(src, S)
+			else
+				step_away(src, S)
 			sleep(1)
-			step_towards(src,S)
+			if(!repel)
+				step_towards(src, S)
+			else
+				step_away(src, S)
 		else if(current_size > STAGE_ONE)
-			step_towards(src,S)
+			if(!repel)
+				step_towards(src, S)
+			else
+				step_away(src, S)
 		else
 			..()
 

code/game/objects/objs.dm

@@ -368,14 +368,20 @@ var/global/list/reagents_to_log = list(FUEL, PLASMA, PACID, SACID, AMUTATIONTOXI
 		to_chat(user, "\the [src] already has a slime extract attached.")
 		return FALSE
 
-/obj/singularity_pull(S, current_size)
+/obj/singularity_pull(S, current_size, repel = FALSE)
 	INVOKE_EVENT(src, /event/before_move)
 	if(anchored)
 		if(current_size >= STAGE_FIVE)
 			anchored = 0
+			if(!repel)
 				step_towards(src, S)
 			else
+				step_away(src, S)
+	else
+		if(!repel)
 			step_towards(src, S)
+		else
+			step_away(src, S)
 	INVOKE_EVENT(src, /event/after_move)
 
 /obj/proc/multitool_menu(var/mob/user,var/obj/item/device/multitool/P)

code/modules/mob/living/carbon/human/human.dm

@@ -1494,14 +1494,17 @@
 	investigation_log(I_SINGULO,"has been consumed by a singularity")
 	gib()
 	return gain
-/mob/living/carbon/human/singularity_pull(S, current_size,var/radiations = 3)
+/mob/living/carbon/human/singularity_pull(S, current_size, repel = FALSE, var/radiations = 3)
 	if(src.flags & INVULNERABLE)
 		return 0
 	if(current_size >= STAGE_THREE) //Pull items from hand
 		for(var/obj/item/I in held_items)
 			if(prob(current_size*5) && I.w_class >= ((11-current_size)/2) && u_equip(I,1))
-				step_towards(I, src)
-				to_chat(src, "<span class = 'warning'>\The [S] pulls \the [I] from your grip!</span>")
+				if(!repel)
+					step_towards(I, S)
+				else
+					step_away(I, S)
+				to_chat(src, "<span class = 'warning'>\The [S] [repel ? "pushes" : "pulls"] \the [I] from your grip!</span>")
 	if(radiations)
 		apply_radiation(current_size * radiations, RAD_EXTERNAL)
 	if(shoes)

code/modules/mob/living/living.dm

@@ -1246,9 +1246,12 @@ Thanks.
 		gib()
 		return(gain)
 
-/mob/living/singularity_pull(S)
+/mob/living/singularity_pull(S, current_size, repel = FALSE)
 	if(!(src.flags & INVULNERABLE))
+		if(!repel)
 			step_towards(src, S)
+		else
+			step_away(src, S)
 
 //shuttle_act is called when a shuttle collides with the mob
 /mob/living/shuttle_act(datum/shuttle/S)

code/modules/power/singularity/singularity.dm

@@ -1,4 +1,5 @@
-var/list/global_singularity_pool
+var/list/obj/machinery/singularity/global_singularity_pool
+var/list/obj/machinery/singularity/white_hole_candidates
 
 /obj/machinery/singularity
 	name = "gravitational singularity" //Lower case
@@ -12,6 +13,8 @@ var/list/global_singularity_pool
 	luminosity = 6
 	use_power = 0
 
+	var/obj/machinery/singularity/wormhole_out = null
+	var/obj/machinery/singularity/wormhole_in = null
 	var/current_size = 1
 	var/allowed_size = 1
 	var/contained = 1 //Are we going to move around?
@@ -31,6 +34,8 @@ var/list/global_singularity_pool
 	appearance_flags = LONG_GLIDE|TILE_MOVER
 	var/chained = 0 //Adminbus chain-grab
 	var/modifier = "" //for memes
+	var/repels = FALSE //For pushing stuff out the other end
+	var/list/speech_messages = list() //Time is occuring in random pockets. The laws of causality no longer apply.
 
 /obj/machinery/singularity/New(loc, var/starting_energy = 50, var/temp = 0)
 	//CARN: admin-alert for chuckle-fuckery.
@@ -52,6 +57,59 @@ var/list/global_singularity_pool
 	if(!global_singularity_pool)
 		global_singularity_pool = list()
 	global_singularity_pool += src
+	if(!white_hole_candidates)
+		white_hole_candidates = list()
+	if(!repels && !(src in white_hole_candidates))
+		white_hole_candidates += src
+	if(prob(1) && white_hole_candidates.len > 1)
+		link_a_wormhole()
+
+/obj/machinery/singularity/proc/link_a_wormhole()
+	var/obj/machinery/singularity/other = null
+	do
+		other = pick(white_hole_candidates)
+	while(white_hole_candidates.len > 1 && other == src)
+	if(other && other != src)
+		if(prob(50))
+			link_wormhole(other)
+		else
+			other.link_wormhole(src)
+
+/obj/machinery/singularity/proc/link_wormhole(var/obj/machinery/singularity/other)
+	if(other)
+		visible_message("<span class='notice'>[src] pulsates as a distinctive [get_area(other) ? "[get_area(other)]": "place"] becomes visible.</span>")
+		other.visible_message("<span class='notice'>[other] pulsates as a distinctive [get_area(src) ? "[get_area(src)]": "place"] becomes visible.</span>")
+		other.name = "white hole"
+		other.desc = "Every action has an equal and opposite reaction. A black hole sucks time and matter out of the universe, a white hole returns it."
+		other.repels = TRUE
+		other.energy = src.energy
+		other.color= list(-1,0,0,
+					0,-1,0,
+					0,0,-1,
+					1,1,1) //Invert it
+		wormhole_out = other
+		other.wormhole_in = src
+		if(other in white_hole_candidates)
+			white_hole_candidates -= other
+
+/obj/machinery/singularity/proc/unlink_wormholes()
+	if(wormhole_out)
+		visible_message("<span class='warning'>[get_area(wormhole_out) ? "[get_area(wormhole_out)]": "The strange place"] is no longer visible as [src] closes its path to it.</span>")
+		wormhole_out.name = initial(wormhole_out.name)
+		wormhole_out.desc = initial(wormhole_out.desc)
+		wormhole_out.repels = FALSE
+		wormhole_out.color= initial(wormhole_out.color)
+		if(!(wormhole_out in white_hole_candidates))
+			white_hole_candidates += wormhole_out
+		wormhole_out = null
+	if(wormhole_in)
+		visible_message("<span class='warning'>[get_area(wormhole_in) ? "[get_area(wormhole_in)]": "The strange place"] is no longer visible as [src] closes its path to it.</span>")
+		name = initial(name)
+		repels = FALSE
+		color = initial(color)
+		if(!(src in white_hole_candidates))
+			white_hole_candidates += src
+		wormhole_in = null
 
 /obj/machinery/singularity/attack_hand(mob/user as mob)
 	consume(user)
@@ -119,6 +177,12 @@ var/list/global_singularity_pool
 					L.forceMove(get_turf(user))
 					animate(L, alpha = 255, time = 3 SECONDS)
 
+/obj/machinery/singularity/Hear(var/datum/speech/speech, var/rendered_message="")
+	if(repels && ismob(speech.speaker))
+		var/mob/M = speech.speaker
+		if(M.dna) // Wait a minute... I missed a discussion!
+			speech_messages[M.dna] = speech.message // We all did
+
 /obj/machinery/singularity/process()
 	dissipate()
 	check_energy()
@@ -129,6 +193,13 @@ var/list/global_singularity_pool
 		if(prob(event_chance)) //Chance for it to run a special event TODO: Come up with one or two more that fit.
 			event()
 	eat()
+	if(repels && speech_messages.len) // I've never seen one before, no one has, but I'm guessing it's a white hole.
+		for(var/mob/M in viewers(src)) // A white hole?
+			if((M.dna in speech_messages) && prob(10))
+				if(prob(90)) // So that thing's spewing time? Back into the universe?
+					M.say(speech_messages[M.dna])
+				else
+					M.say("So what is it?") //Only joking
 
 /obj/machinery/singularity/attack_ai() //To prevent AIs from gibbing themselves when they click on one.
 	return
@@ -351,8 +422,8 @@ var/list/global_singularity_pool
 					continue
 				try
 					var/dist = get_z_dist(X, src)
-					if(dist > consume_range)
-						X.singularity_pull(src, current_size)
+					if(dist > consume_range || repels)
+						X.singularity_pull(src, current_size, repels)
 					else if(dist <= consume_range)
 						if(consume(X))
 							ngrabbed++
@@ -390,6 +461,12 @@ var/list/global_singularity_pool
 			newsea.ChangeTurf(/turf/unsimulated/wall/supermatter)
 
 /obj/machinery/singularity/proc/consume(const/atom/A)
+	if(repels && !(istype(A,/obj/item/bluespace_crystal)))
+		return
+	if(wormhole_out && !(istype(A,/obj/item/bluespace_crystal)))
+		var/turf/T = get_turf(wormhole_out)
+		do_teleport(A, T)
+	else
 		var/gain = A.singularity_act(current_size,src)
 		src.energy += gain
 		return gain
@@ -641,9 +718,11 @@ var/list/global_singularity_pool
 */ //Fuck you centcomm
 
 /obj/machinery/singularity/Destroy()
+	unlink_wormholes()
 	..()
 	power_machines -= src
 	global_singularity_pool -= src
+	white_hole_candidates -= src
 
 /obj/machinery/singularity/bite_act(mob/user)
 	consume(user)
@@ -920,3 +999,12 @@ var/list/global_singularity_pool
 /obj/machinery/singularity/scrungulartiy
 	name = "grabibational scrungulartiy"
 	modifier = "scrung_"
+
+/obj/machinery/singularity/soutgularity
+	name = "white hole"
+	desc = "Every action has an equal and opposite reaction. A black hole sucks time and space out of the universe, a white hole returns it."
+	repels = TRUE
+	color= list(-1,0,0,
+				0,-1,0,
+				0,0,-1,
+				1,1,1) //Invert it

code/modules/telesci/bscrystal.dm

@@ -45,6 +45,20 @@
 
 	qdel(src)
 
+/obj/item/bluespace_crystal/singularity_act(var/current_size,var/obj/machinery/singularity/S)
+	if(istype(src,/obj/item/bluespace_crystal/artificial))
+		return ..()
+	if(istype(src,/obj/item/bluespace_crystal/flawless) || prob(10))
+		if(S.wormhole_out || S.wormhole_in)
+			S.unlink_wormholes()
+		else if(white_hole_candidates.len > 1)
+			S.link_a_wormhole()
+		if(istype(src,/obj/item/bluespace_crystal/flawless) && S.wormhole_out)
+			var/turf/T = get_turf(S.wormhole_out)
+			do_teleport(src, T)
+			return 2
+	return ..()
+
 // Artifical bluespace crystal, doesn't give you much research.
 
 /obj/item/bluespace_crystal/artificial