Somewhat fixed huds and stuff, not 100%

code/_onclick/hud/alert.dm

@@ -40,7 +40,7 @@
 		thealert.override_alerts = override
 		if(override)
 			thealert.timeout = null
-	thealert.mob_viewer = src
+	thealert.owner = src
 
 	if(new_master)
 		var/old_layer = new_master.layer
@@ -95,7 +95,6 @@
 	var/severity = 0
 	var/alerttooltipstyle = ""
 	var/override_alerts = FALSE //If it is overriding other alerts of the same type
-	var/mob/mob_viewer //the mob viewing this alert
 	var/mob/owner //Alert owner
 
 
@@ -250,6 +249,8 @@ or something covering your eyes."
 
 /atom/movable/screen/alert/mind_control/Click()
 	var/mob/living/L = usr
+	if(L != owner)
+		return
 	to_chat(L, "<span class='mind_control'>[command]</span>")
 
 /atom/movable/screen/alert/hypnosis
@@ -270,7 +271,7 @@ If you're feeling frisky, examine yourself and click the underlined item to pull
 	icon_state = "embeddedobject"
 
 /atom/movable/screen/alert/embeddedobject/Click()
-	if(isliving(usr))
+	if(isliving(usr) && usr == owner)
 		var/mob/living/carbon/M = usr
 		return M.help_shake_act(M)
 
@@ -299,7 +300,7 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 
 /atom/movable/screen/alert/fire/Click()
 	var/mob/living/L = usr
-	if(!istype(L) || !L.can_resist())
+	if(!istype(L) || !L.can_resist() || L != owner)
 		return
 	L.MarkResistTime()
 	if(CHECK_MOBILITY(L, MOBILITY_MOVE))
@@ -334,10 +335,8 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 	. = ..()
 	if(!.)
 		return
-
 	if(!iscarbon(usr))
 		CRASH("User for [src] is of type \[[usr.type]\]. This should never happen.")
-
 	handle_transfer()
 
 /// An overrideable proc used simply to hand over the item when claimed, this is a proc so that high-fives can override them since nothing is actually transferred
@@ -353,6 +352,54 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 		to_chat(owner, span_warning("You moved out of range of [offerer]!"))
 		owner.clear_alert("[offerer]")
 
+/atom/movable/screen/alert/give/highfive/setup(mob/living/carbon/taker, mob/living/carbon/offerer, obj/item/receiving)
+	. = ..()
+	name = "[offerer] is offering a high-five!"
+	desc = "[offerer] is offering a high-five! Click this alert to slap it."
+	RegisterSignal(offerer, COMSIG_PARENT_EXAMINE_MORE, .proc/check_fake_out)
+
+/atom/movable/screen/alert/give/highfive/handle_transfer()
+	var/mob/living/carbon/taker = owner
+	if(receiving && (receiving in offerer.held_items))
+		receiving.on_offer_taken(offerer, taker)
+		return
+	too_slow_p1()
+
+/// If the person who offered the high five no longer has it when we try to accept it, we get pranked hard
+/atom/movable/screen/alert/give/highfive/proc/too_slow_p1()
+	var/mob/living/carbon/rube = owner
+	if(!rube || !offerer)
+		qdel(src)
+		return
+
+	offerer.visible_message(span_notice("[rube] rushes in to high-five [offerer], but-"), span_nicegreen("[rube] falls for your trick just as planned, lunging for a high-five that no longer exists! Classic!"), ignored_mobs=rube)
+	to_chat(rube, span_nicegreen("You go in for [offerer]'s high-five, but-"))
+	addtimer(CALLBACK(src, .proc/too_slow_p2, offerer, rube), 0.5 SECONDS)
+
+/// Part two of the ultimate prank
+/atom/movable/screen/alert/give/highfive/proc/too_slow_p2()
+	var/mob/living/carbon/rube = owner
+	if(!rube || !offerer)
+		qdel(src)
+		return
+
+	offerer.visible_message(span_danger("[offerer] pulls away from [rube]'s slap at the last second, dodging the high-five entirely!"), span_nicegreen("[rube] fails to make contact with your hand, making an utter fool of [rube.p_them()]self!"), span_hear("You hear a disappointing sound of flesh not hitting flesh!"), ignored_mobs=rube)
+	var/all_caps_for_emphasis = uppertext("NO! [offerer] PULLS [offerer.p_their()] HAND AWAY FROM YOURS! YOU'RE TOO SLOW!")
+	to_chat(rube, span_userdanger("[all_caps_for_emphasis]"))
+	playsound(offerer, 'sound/weapons/thudswoosh.ogg', 100, TRUE, 1)
+	rube.Knockdown(1 SECONDS)
+	SEND_SIGNAL(offerer, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/down_low)
+	SEND_SIGNAL(rube, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/too_slow)
+	qdel(src)
+
+/// If someone examine_more's the offerer while they're trying to pull a too-slow, it'll tip them off to the offerer's trickster ways
+/atom/movable/screen/alert/give/highfive/proc/check_fake_out(datum/source, mob/user, list/examine_list)
+	SIGNAL_HANDLER
+
+	if(!receiving)
+		examine_list += "[span_warning("[offerer]'s arm appears tensed up, as if [offerer.p_they()] plan on pulling it back suddenly...")]\n"
+
+/// Families handshakes
 /atom/movable/screen/alert/give/secret_handshake
 	icon_state = "default"
 
@@ -419,10 +466,10 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 /atom/movable/screen/alert/bloodsense/process()
 	var/atom/blood_target
 
-	if(!mob_viewer.mind)
+	if(!owner.mind)
 		return
 
-	var/datum/antagonist/cult/antag = mob_viewer.mind.has_antag_datum(/datum/antagonist/cult,TRUE)
+	var/datum/antagonist/cult/antag = owner.mind.has_antag_datum(/datum/antagonist/cult,TRUE)
 	if(!antag?.cult_team)
 		return
 	var/datum/objective/sacrifice/sac_objective = locate() in antag.cult_team.objectives
@@ -459,7 +506,7 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 			add_overlay(narnar)
 		return
 	var/turf/P = get_turf(blood_target)
-	var/turf/Q = get_turf(mob_viewer)
+	var/turf/Q = get_turf(owner)
 	if(!P || !Q || (P.z != Q.z)) //The target is on a different Z level, we cannot sense that far.
 		icon_state = "runed_sense2"
 		desc = "You can no longer sense your target's presence."
@@ -523,7 +570,7 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 		for(var/mob/living/L in GLOB.alive_mob_list)
 			if(is_servant_of_ratvar(L))
 				servants++
-		var/datum/antagonist/clockcult/C = mob_viewer.mind.has_antag_datum(/datum/antagonist/clockcult,TRUE)
+		var/datum/antagonist/clockcult/C = owner.mind.has_antag_datum(/datum/antagonist/clockcult,TRUE)
 		if(C && C.clock_team)
 			textlist += "[C.clock_team.eminence ? "There is an Eminence." : "<b>There is no Eminence! Get one ASAP!</b>"]<br>"
 		textlist += "There are currently <b>[servants]</b> servant[servants > 1 ? "s" : ""] of Ratvar.<br>"
@@ -621,7 +668,7 @@ so as to remain in compliance with the most up-to-date laws."
 	var/atom/target = null
 
 /atom/movable/screen/alert/hackingapc/Click()
-	if(!usr || !usr.client)
+	if(!usr || !usr.client || usr != owner)
 		return
 	if(!target)
 		return
@@ -647,7 +694,7 @@ so as to remain in compliance with the most up-to-date laws."
 	timeout = 300
 
 /atom/movable/screen/alert/notify_cloning/Click()
-	if(!usr || !usr.client)
+	if(!usr || !usr.client || usr != owner)
 		return
 	var/mob/dead/observer/G = usr
 	G.reenter_corpse()
@@ -661,7 +708,7 @@ so as to remain in compliance with the most up-to-date laws."
 	var/action = NOTIFY_JUMP
 
 /atom/movable/screen/alert/notify_action/Click()
-	if(!usr || !usr.client)
+	if(!usr || !usr.client || usr != owner)
 		return
 	if(!target)
 		return
@@ -695,14 +742,14 @@ so as to remain in compliance with the most up-to-date laws."
 
 /atom/movable/screen/alert/restrained/Click()
 	var/mob/living/L = usr
-	if(!istype(L) || !L.can_resist())
+	if(!istype(L) || !L.can_resist() || L != owner)
 		return
 	L.MarkResistTime()
 	return L.resist_restraints()
 
 /atom/movable/screen/alert/restrained/buckled/Click()
 	var/mob/living/L = usr
-	if(!istype(L) || !L.can_resist())
+	if(!istype(L) || !L.can_resist() || L != owner)
 		return
 	L.MarkResistTime()
 	return L.resist_buckle()
@@ -719,7 +766,7 @@ so as to remain in compliance with the most up-to-date laws."
 
 /atom/movable/screen/alert/shoes/Click()
 	var/mob/living/carbon/C = usr
-	if(!istype(C) || !C.can_resist() || C != mob_viewer || !C.shoes)
+	if(!istype(C) || !C.can_resist() || C != owner || !C.shoes)
 		return
 	C.MarkResistTime()
 	C.shoes.handle_tying(C)
@@ -727,11 +774,14 @@ so as to remain in compliance with the most up-to-date laws."
 // PRIVATE = only edit, use, or override these if you're editing the system as a whole
 
 // Re-render all alerts - also called in /datum/hud/show_hud() because it's needed there
-/datum/hud/proc/reorganize_alerts()
+/datum/hud/proc/reorganize_alerts(mob/viewmob)
+	var/mob/screenmob = viewmob || mymob
+	if(!screenmob.client)
+		return
 	var/list/alerts = mymob.alerts
 	if(!hud_shown)
 		for(var/i = 1, i <= alerts.len, i++)
-			mymob.client.screen -= alerts[alerts[i]]
+			screenmob.client.screen -= alerts[alerts[i]]
 		return 1
 	for(var/i = 1, i <= alerts.len, i++)
 		var/atom/movable/screen/alert/alert = alerts[alerts[i]]
@@ -751,7 +801,10 @@ so as to remain in compliance with the most up-to-date laws."
 			else
 				. = ""
 		alert.screen_loc = .
-		mymob.client.screen |= alert
+		screenmob.client.screen |= alert
+	if(!viewmob)
+		for(var/M in mymob.observers)
+			reorganize_alerts(M)
 	return 1
 
 /atom/movable/screen/alert/Click(location, control, params)
@@ -761,6 +814,8 @@ so as to remain in compliance with the most up-to-date laws."
 	if(paramslist["shift"]) // screen objects don't do the normal Click() stuff so we'll cheat
 		to_chat(usr, "<span class='boldnotice'>[name]</span> - <span class='info'>[desc]</span>")
 		return
+	if(usr != owner)
+		return
 	if(master)
 		return usr.client.Click(master, location, control, params)
 
@@ -768,5 +823,5 @@ so as to remain in compliance with the most up-to-date laws."
 	. = ..()
 	severity = 0
 	master = null
-	mob_viewer = null
+	owner = null
 	screen_loc = ""

code/_onclick/hud/ghost.dm

@@ -93,3 +93,10 @@
 		screenmob.client.screen -= static_inventory
 	else
 		screenmob.client.screen += static_inventory
+
+//We should only see observed mob alerts.
+/datum/hud/ghost/reorganize_alerts(mob/viewmob)
+	var/mob/dead/observer/O = mymob
+	if (istype(O) && O.observetarget)
+		return
+	. = ..()

code/_onclick/hud/hud.dm

@@ -193,7 +193,7 @@ GLOBAL_LIST_INIT(available_ui_styles, list(
 	hud_version = display_hud_version
 	persistent_inventory_update(screenmob)
 	screenmob.update_action_buttons(1)
-	reorganize_alerts()
+	reorganize_alerts(screenmob)
 	screenmob.reload_fullscreen()
 	update_parallax_pref(screenmob)
 

code/datums/mood_events/generic_negative_events.dm

@@ -294,3 +294,34 @@
 	description = "<span class='boldwarning'>I hate when my shoes come untied!</span>\n"
 	mood_change = -3
 	timeout = 1 MINUTES
+
+/datum/mood_event/high_five_alone
+	description = "<span class='boldwarning'>I tried getting a high-five with no one around, how embarassing!</span>\n"
+	mood_change = -2
+	timeout = 1 MINUTES
+
+/datum/mood_event/high_five_full_hand
+	description = "<span class='boldwarning'>Oh God, I don't even know how to high-five correctly...</span>\n"
+	mood_change = -1
+	timeout = 45 SECONDS
+
+/datum/mood_event/left_hanging
+	description = "<span class='boldwarning'>But everyone loves high fives! Maybe people just... hate me?</span>\n"
+	mood_change = -2
+	timeout = 1.5 MINUTES
+
+/datum/mood_event/too_slow
+	description = "<span class='boldwarning'>NO! HOW COULD I BE.... TOO SLOW???</span>\n"
+	mood_change = -2 // multiplied by how many people saw it happen, up to 8, so potentially massive. the ULTIMATE prank carries a lot of weight
+	timeout = 2 MINUTES
+
+/datum/mood_event/too_slow/add_effects(param)
+	var/people_laughing_at_you = 1 // start with 1 in case they're on the same tile or something
+	for(var/mob/living/carbon/iter_carbon in oview(owner, 7))
+		if(iter_carbon.stat == CONSCIOUS)
+			people_laughing_at_you++
+			if(people_laughing_at_you > 7)
+				break
+
+	mood_change *= people_laughing_at_you
+	return ..()

code/datums/mood_events/generic_positive_events.dm

@@ -205,3 +205,18 @@
 /datum/mood_event/cleared_stomach
 	description = "<span class='nicegreen'>Feels nice to get that out of the way!</span>\n"
 	mood_change = 3
+
+/datum/mood_event/high_five
+	description = "<span class='nicegreen'>I love getting high fives!</span>\n"
+	mood_change = 2
+	timeout = 45 SECONDS
+
+/datum/mood_event/high_ten
+	description = "<span class='nicegreen'>AMAZING! A HIGH-TEN!</span>\n"
+	mood_change = 3
+	timeout = 45 SECONDS
+
+/datum/mood_event/down_low
+	description = "<span class='nicegreen'>HA! What a rube, they never stood a chance...</span>\n"
+	mood_change = 4
+	timeout = 1.5 MINUTES

code/datums/status_effects/debuffs.dm

@@ -929,11 +929,13 @@
 
 /atom/movable/screen/alert/status_effect/strandling/Click(location, control, params)
 	. = ..()
-	to_chat(mob_viewer, "<span class='notice'>You attempt to remove the durathread strand from around your neck.</span>")
-	if(do_after(mob_viewer, 35, null, mob_viewer))
-		if(isliving(mob_viewer))
-			var/mob/living/L = mob_viewer
-			to_chat(mob_viewer, "<span class='notice'>You successfully remove the durathread strand.</span>")
+	if(usr != owner)
+		return
+	to_chat(owner, "<span class='notice'>You attempt to remove the durathread strand from around your neck.</span>")
+	if(do_after(owner, 35, null, owner))
+		if(isliving(owner))
+			var/mob/living/L = owner
+			to_chat(owner, "<span class='notice'>You successfully remove the durathread strand.</span>")
 			L.remove_status_effect(STATUS_EFFECT_CHOKINGSTRAND)
 
 

code/datums/status_effects/status_effect.dm

@@ -35,8 +35,9 @@
 	next_tick = world.time + tick_interval
 	if(alert_type)
 		var/atom/movable/screen/alert/status_effect/A = owner.throw_alert(id, alert_type)
-		A.attached_effect = src //so the alert can reference us, if it needs to
-		linked_alert = A //so we can reference the alert, if we need to
+		if(istype(A))
+			A?.attached_effect = src //so the alert can reference us, if it needs to
+			linked_alert = A //so we can reference the alert, if we need to
 	START_PROCESSING(SSstatus_effects, src)
 	return TRUE
 

code/game/objects/items/weaponry.dm

@@ -1229,10 +1229,50 @@ for further reading, please see: https://github.com/tgstation/tgstation/pull/301
 
 /obj/item/slapper/on_offered(mob/living/carbon/offerer)
 	. = TRUE
+	
+	if(!(locate(/mob/living/carbon) in orange(1, offerer)))
+		visible_message(span_danger("[offerer] raises [offerer.p_their()] arm, looking around for a high-five, but there's no one around!"), \
+			span_warning("You post up, looking for a high-five, but finding no one within range!"), null, 2)
+		return
 
+	offerer.visible_message(span_notice("[offerer] raises [offerer.p_their()] arm, looking for a high-five!"), \
+		span_notice("You post up, looking for a high-five!"), null, 2)
+	offerer.apply_status_effect(STATUS_EFFECT_OFFERING, src, /atom/movable/screen/alert/give/highfive)
+
+/// Yeah broh! This is where we do the high-fiving (or high-tenning :o)
 /obj/item/slapper/on_offer_taken(mob/living/carbon/offerer, mob/living/carbon/taker)
 	. = TRUE
 
+	var/open_hands_taker
+	var/slappers_giver
+	for(var/i in taker.held_items) // see how many hands the taker has open for high'ing
+		if(isnull(i))
+			open_hands_taker++
+
+	if(!open_hands_taker)
+		to_chat(taker, span_warning("You can't high-five [offerer] with no open hands!"))
+		SEND_SIGNAL(taker, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/high_five_full_hand) // not so successful now!
+		return
+
+	for(var/i in offerer.held_items)
+		var/obj/item/slapper/slap_check = i
+		if(istype(slap_check))
+			slappers_giver++
+
+	if(slappers_giver >= 2) // we only check this if it's already established the taker has 2+ hands free
+		offerer.visible_message(span_notice("[taker] enthusiastically high-tens [offerer]!"), span_nicegreen("Wow! You're high-tenned [taker]!"), span_hear("You hear a sickening sound of flesh hitting flesh!"), ignored_mobs=taker)
+		to_chat(taker, span_nicegreen("You give high-tenning [offerer] your all!"))
+		playsound(offerer, 'sound/weapons/slap.ogg', 100, TRUE, 1)
+		SEND_SIGNAL(offerer, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/high_ten)
+		SEND_SIGNAL(taker, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/high_ten)
+	else
+		offerer.visible_message(span_notice("[taker] high-fives [offerer]!"), span_nicegreen("All right! You're high-fived by [taker]!"), span_hear("You hear a sickening sound of flesh hitting flesh!"), ignored_mobs=taker)
+		to_chat(taker, span_nicegreen("You high-five [offerer]!"))
+		playsound(offerer, 'sound/weapons/slap.ogg', 50, TRUE, -1)
+		SEND_SIGNAL(offerer, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/high_five)
+		SEND_SIGNAL(taker, COMSIG_ADD_MOOD_EVENT, "high_five", /datum/mood_event/high_five)
+	qdel(src)
+
 /// Gangster secret handshakes.
 /obj/item/slapper/secret_handshake
 	name = "Secret Handshake"

code/modules/antagonists/gang/gang.dm

@@ -241,12 +241,12 @@
 		qdel(secret_handshake_item)
 		to_chat(owner, span_warning("You're incapable of performing a handshake in your current state."))
 		return FALSE
-	owner.visible_message(span_notice("[src] is offering to induct people into the Family."),
+	owner.visible_message(span_notice("[owner] is offering to induct people into the Family."),
 		span_notice("You offer to induct people into the Family."), null, 2)
 	if(H.has_status_effect(STATUS_EFFECT_HANDSHAKE))
 		return FALSE
 	if(!(locate(/mob/living/carbon) in orange(1, owner)))
-		owner.visible_message(span_danger("[src] offers to induct people into the Family, but nobody was around."), \
+		owner.visible_message(span_danger("[owner] offers to induct people into the Family, but nobody was around."), \
 			span_warning("You offer to induct people into the Family, but nobody is around."), null, 2)
 		return FALSE
 

code/modules/clothing/shoes/_shoes.dm

@@ -102,7 +102,7 @@
 	worn_y_dimension = world.icon_size
 
 /obj/item/clothing/shoes/dropped(mob/user)
-	if(our_alert && (our_alert.mob_viewer == user))
+	if(our_alert && (our_alert.owner == user))
 		user.clear_alert("shoealert")
 	if(offset && equipped_before_drop)
 		restore_offsets(user)