Merge pull request #210 from TyrantCerberus/handedness

New quirk: Dominant Hand

code/__DEFINES/~~iris_defines/traits/declarations.dm

@@ -9,11 +9,14 @@
 
 //mob traits
 
-//START PORT https://github.com/lizardqueenlexi/orbstation/pull/254:
-//Makes you illiterate while not wearing glasses
+//Makes you illiterate while not wearing glasses, part of https://github.com/lizardqueenlexi/orbstation/pull/254
 #define TRAIT_FARSIGHT "farsighted"
 
+//HANDEDNESS_QUIRK
+#define TRAIT_HANDEDNESS "handedness"
+#define TRAIT_HANDEDNESS_LEFT "handedness_left"
+
 //Trait sources
-// Special trait source for illiteracy granted by farsightedness
+
+//Special trait source for illiteracy granted by farsightedness, part of https://github.com/lizardqueenlexi/orbstation/pull/254
 #define FARSIGHT_TRAIT "farsighted_trait"
-//END PORT

code/_globalvars/lists/quirks.dm

@@ -124,3 +124,10 @@ GLOBAL_LIST_INIT(quirk_chipped_choice, list(
 	"Mast-Angl-Er" = /obj/item/skillchip/master_angler,
 	"Kommand" = /obj/item/skillchip/big_pointer,
 ))
+
+//IRIS EDIT ADDITION BEGIN - HANDEDNESS_QUIRK
+GLOBAL_LIST_INIT(side_choice_handedness, list(
+	"Dominant Left Hand",
+	"Dominant Right Hand",
+))
+//IRIS EDIT ADDITION END

code/_globalvars/traits/_traits.dm

@@ -292,6 +292,10 @@ GLOBAL_LIST_INIT(traits_by_type, list(
 		"TRAIT_GUN_NATURAL" = TRAIT_GUN_NATURAL,
 		"TRAIT_HALLUCINATION_IMMUNE" = TRAIT_HALLUCINATION_IMMUNE,
 		"TRAIT_HALT_RADIATION_EFFECTS" = TRAIT_HALT_RADIATION_EFFECTS,
+		// IRIS EDIT ADDITION BEGIN - HANDEDNESS_QUIRK
+		"TRAIT_HANDEDNESS" = TRAIT_HANDEDNESS,
+		"TRAIT_HANDEDNESS_LEFT" = TRAIT_HANDEDNESS_LEFT,
+		// IRIS EDIT ADDITION END
 		"TRAIT_HANDS_BLOCKED" = TRAIT_HANDS_BLOCKED,
 		"TRAIT_HARDLY_WOUNDED" = TRAIT_HARDLY_WOUNDED,
 		"TRAIT_HAS_BEEN_KIDNAPPED" = TRAIT_HAS_BEEN_KIDNAPPED,

code/controllers/subsystem/processing/quirks.dm

@@ -43,6 +43,9 @@ GLOBAL_LIST_INIT_TYPED(quirk_blacklist, /list/datum/quirk, list(
 	//IRIS EDIT ADDITION BEGIN
 	//ORBSTATION PORT: if you're illiterate, farsighted would just be free points
 	list(/datum/quirk/item_quirk/farsighted, /datum/quirk/illiterate),
+	//HANDEDNESS_QUIRK (split across two lines so we don't prevent the taking of clumsy with hemiplegic)
+	list(/datum/quirk/handedness, /datum/quirk/hemiplegic),
+	list(/datum/quirk/handedness, /datum/quirk/clumsy),
 	//IRIS EDIT ADDITION END
 ))
 

code/datums/components/supermatter_crystal.dm

@@ -163,7 +163,12 @@
 		return FALSE
 	if(istype(item, /obj/item/cigarette))
 		var/obj/item/cigarette/cig = item
-		var/clumsy = HAS_TRAIT(user, TRAIT_CLUMSY)
+		//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+		var/clumsy = FALSE
+		var/hand_index = user.active_hand_index
+		if(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+			clumsy = TRUE
+		//IRIS EDIT CHANGE END
 		if(clumsy)
 			var/obj/item/bodypart/dust_arm = user.get_active_hand()
 			dust_arm.dismember()

code/datums/components/transforming.dm

@@ -260,9 +260,15 @@
 	if(!clumsy_check)
 		return FALSE
 
-	if(!user || !HAS_TRAIT(user, TRAIT_CLUMSY))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	if(!user)
 		return FALSE
 
+	var/hand_index = user.active_hand_index
+	if(!(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+		return FALSE
+	//IRIS EDIT CHANGE END
+
 	if(active && prob(50))
 		var/hurt_self_verb_simple = LAZYLEN(attack_verb_simple_on) ? pick(attack_verb_simple_on) : "hit"
 		var/hurt_self_verb_continuous = LAZYLEN(attack_verb_continuous_on) ? pick(attack_verb_continuous_on) : "hits"

code/datums/elements/eyestab.dm

@@ -40,8 +40,12 @@
 	if (HAS_TRAIT(user, TRAIT_PACIFISM))
 		return
 
-	if (HAS_TRAIT(user, TRAIT_CLUMSY) && prob(CLUMSY_ATTACK_SELF_CHANCE))
-		target = user
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+		if(prob(CLUMSY_ATTACK_SELF_CHANCE))
+			target = user
+	//IRIS EDIT CHANGE END
 
 	if (target.is_eyes_covered() || isalien(target) || isbrain(target))
 		return

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

@@ -243,7 +243,10 @@
 	add_fingerprint(user)
 	if(user.combat_mode || (user.zone_selected != BODY_ZONE_PRECISE_EYES && user.zone_selected != BODY_ZONE_PRECISE_MOUTH))
 		return NONE
-	if((HAS_TRAIT(user, TRAIT_CLUMSY) || HAS_TRAIT(user, TRAIT_DUMB)) && prob(50)) //too dumb to use flashlight properly
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)) || HAS_TRAIT(user, TRAIT_DUMB))) //too dumb to use flashlight properly
+	//IRIS EDIT CHANGE END
 		return ITEM_INTERACT_SKIP_TO_ATTACK //just hit them in the head
 
 	. = ITEM_INTERACT_BLOCKING

code/game/objects/items/devices/scanners/autopsy_scanner.dm

@@ -28,7 +28,10 @@
 	. = ITEM_INTERACT_SUCCESS
 
 	// Clumsiness/brain damage check
-	if ((HAS_TRAIT(user, TRAIT_CLUMSY) || HAS_TRAIT(user, TRAIT_DUMB)) && prob(50))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)) || HAS_TRAIT(user, TRAIT_DUMB)))
+	//IRIS EDIT CHANGE END
 		user.visible_message(span_warning("[user] analyzes the floor's vitals!"), \
 							span_notice("You stupidly try to analyze the floor's vitals!"))
 		to_chat(user, "[span_info("Analyzing results for The floor:\n\tOverall status: <b>Healthy</b>")]\

code/game/objects/items/devices/scanners/health_analyzer.dm

@@ -68,7 +68,10 @@
 	flick("[icon_state]-scan", src) //makes it so that it plays the scan animation upon scanning, including clumsy scanning
 
 	// Clumsiness/brain damage check
-	if ((HAS_TRAIT(user, TRAIT_CLUMSY) || HAS_TRAIT(user, TRAIT_DUMB)) && prob(50))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if (prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)) || HAS_TRAIT(user, TRAIT_DUMB)))
+	//IRIS EDIT CHANGE END
 		var/turf/scan_turf = get_turf(user)
 		user.visible_message(
 			span_warning("[user] analyzes [scan_turf]'s vitals!"),

code/game/objects/items/devices/scanners/scanner_wand.dm

@@ -15,7 +15,10 @@
 /obj/item/scanner_wand/attack(mob/living/M, mob/living/carbon/human/user)
 	flick("[icon_state]_active", src) //nice little visual flash when scanning someone else.
 
-	if((HAS_TRAIT(user, TRAIT_CLUMSY) || HAS_TRAIT(user, TRAIT_DUMB)) && prob(25))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(25) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)) || HAS_TRAIT(user, TRAIT_DUMB)))
+	//IRIS EDIT CHANGE END
 		user.visible_message(span_warning("[user] targets himself for scanning."), \
 		to_chat(user, span_info("You try scanning [M], before realizing you're holding the scanner backwards. Whoops.")))
 		selected_target = user

code/game/objects/items/grenades/_grenade.dm

@@ -105,7 +105,10 @@
 		to_chat(user, span_warning("What the... [src] is stuck to your hand!"))
 		ADD_TRAIT(src, TRAIT_NODROP, STICKY_NODROP)
 
-	var/clumsy = HAS_TRAIT(user, TRAIT_CLUMSY)
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	var/clumsy = (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+	//IRIS EDIT CHANGE END
 	if(clumsy && (clumsy_check == GRENADE_CLUMSY_FUMBLE) && prob(50))
 		to_chat(user, span_warning("Huh? How does this thing work?"))
 		arm_grenade(user, 5, FALSE)

code/game/objects/items/handcuffs.dm

@@ -89,10 +89,15 @@
 		victim.balloon_alert(user, "can't be handcuffed!")
 		return
 
-	if(iscarbon(user) && (HAS_TRAIT(user, TRAIT_CLUMSY) && prob(50))) //Clumsy people have a 50% chance to handcuff themselves instead of their target.
-		to_chat(user, span_warning("Uh... how do those things work?!"))
-		apply_cuffs(user, user)
-		return
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	if(iscarbon(user))
+		var/hand_index = user.active_hand_index
+		if(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+			if(prob(50)) //Clumsy people have a 50% chance to handcuff themselves instead of their target.
+				to_chat(user, span_warning("Uh... how do those things work?!"))
+				apply_cuffs(user, user)
+				return
+	//IRIS EDIT CHANGE END
 
 	if(!isnull(victim.handcuffed))
 		victim.balloon_alert(user, "already handcuffed!")

code/game/objects/items/melee/baton.dm

@@ -265,7 +265,12 @@
 	addtimer(TRAIT_CALLBACK_REMOVE(target, TRAIT_IWASBATONED, user_ref), cooldown)
 
 /obj/item/melee/baton/proc/clumsy_check(mob/living/user, mob/living/intented_target)
-	if(!active || !HAS_TRAIT(user, TRAIT_CLUMSY) || prob(50))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(!(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+		return FALSE
+	if(!active || prob(50))
+	//IRIS EDIT CHANGE END
 		return FALSE
 	user.visible_message(span_danger("[user] accidentally hits [user.p_them()]self over the head with [src]! What a doofus!"), span_userdanger("You accidentally hit yourself over the head with [src]!"))
 

code/game/objects/items/pneumaticCannon.dm

@@ -189,7 +189,10 @@
 	if(tank && !tank.remove_air(gasPerThrow * pressure_setting))
 		to_chat(user, span_warning("\The [src] lets out a weak hiss and doesn't react!"))
 		return
-	if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(75) && clumsyCheck && iscarbon(user))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(clumsyCheck && iscarbon(user) && prob(75) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+	//IRIS EDIT CHANGE END
 		var/mob/living/carbon/C = user
 		C.visible_message(span_warning("[C] loses [C.p_their()] grip on [src], causing it to go off!"), span_userdanger("[src] slips out of your hands and goes off!"))
 		C.dropItemToGround(src, TRUE)

code/game/turfs/open/lava.dm

@@ -227,7 +227,12 @@
 		if(ciggie.lit)
 			to_chat(user, span_warning("The [ciggie.name] is already lit!"))
 			return TRUE
-		var/clumsy_modifier = HAS_TRAIT(user, TRAIT_CLUMSY) ? 2 : 1
+		//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+		var/clumsy_modifier = 1
+		var/hand_index = user.active_hand_index
+		if(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+			clumsy_modifier *= 2 //double the chance of an accident if they're clumsy
+		//IRIS EDIT CHANGE END
 		if(prob(25 * clumsy_modifier) && isliving(user))
 			ciggie.light(span_warning("[user] expertly dips \the [ciggie.name] into [src], along with the rest of [user.p_their()] arm. What a dumbass."))
 			var/mob/living/burned_guy = user

code/modules/assembly/flash.dm

@@ -61,7 +61,10 @@
 	return ..()
 
 /obj/item/assembly/flash/proc/clown_check(mob/living/carbon/human/user)
-	if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(50))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+	//IRIS EDIT CHANGE END
 		flash_carbon(user, user, confusion_duration = 15 SECONDS, targeted = FALSE)
 		return FALSE
 	return TRUE

code/modules/assembly/mousetrap.dm

@@ -85,9 +85,13 @@
 		if(!armed)
 			if(ishuman(usr))
 				var/mob/living/carbon/human/user = usr
-				if((HAS_TRAIT(user, TRAIT_DUMB) || HAS_TRAIT(user, TRAIT_CLUMSY)) && prob(50))
-					to_chat(user, span_warning("Your hand slips, setting off the trigger!"))
-					pulse()
+				//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+				var/hand_index = user.active_hand_index
+				if(HAS_TRAIT(user, TRAIT_DUMB) || HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+					if(prob(50))
+						to_chat(user, span_warning("Your hand slips, setting off the trigger!"))
+						pulse()
+				//IRIS EDIT CHANGE END
 		update_appearance()
 		playsound(loc, 'sound/items/weapons/handcuffs.ogg', 30, TRUE, -3)
 
@@ -154,14 +158,18 @@
 /obj/item/assembly/mousetrap/proc/clumsy_check(mob/living/carbon/human/user)
 	if(!armed || !user)
 		return FALSE
-	if((HAS_TRAIT(user, TRAIT_DUMB) || HAS_TRAIT(user, TRAIT_CLUMSY)) && prob(50))
-		var/which_hand = BODY_ZONE_PRECISE_L_HAND
-		if(IS_RIGHT_INDEX(user.active_hand_index))
-			which_hand = BODY_ZONE_PRECISE_R_HAND
-		triggered(user, which_hand)
-		user.visible_message(span_warning("[user] accidentally sets off [src], breaking their fingers."), \
-			span_warning("You accidentally trigger [src]!"))
-		return TRUE
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(HAS_TRAIT(user, TRAIT_DUMB) || HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+		if(prob(50))
+			var/which_hand = BODY_ZONE_PRECISE_L_HAND
+			if(IS_RIGHT_INDEX(user.active_hand_index))
+				which_hand = BODY_ZONE_PRECISE_R_HAND
+			triggered(user, which_hand)
+			user.visible_message(span_warning("[user] accidentally sets off [src], breaking their fingers."), \
+				span_warning("You accidentally trigger [src]!"))
+			return TRUE
+	//IRIS EDIT CHANGE END
 	return FALSE
 
 /obj/item/assembly/mousetrap/attack_self(mob/living/carbon/human/user)

code/modules/library/bibles.dm

@@ -229,7 +229,10 @@ GLOBAL_LIST_INIT(bibleitemstates, list(
 		balloon_alert(user, "not dextrous enough!")
 		return
 
-	if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(50))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+	//IRIS EDIT CHANGE END
 		to_chat(user, span_danger("[src] slips out of your hand and hits your head."))
 		user.take_bodypart_damage(10)
 		user.Unconscious(40 SECONDS)

code/modules/paperwork/paper.dm

@@ -412,7 +412,10 @@
 	var/ignition_message = attacking_item.ignition_effect(src, user)
 	if(!ignition_message)
 		return FALSE
-	if(!bypass_clumsy && HAS_TRAIT(user, TRAIT_CLUMSY) && prob(10) && Adjacent(user))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(!bypass_clumsy && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))) && prob(10) && Adjacent(user))
+	//IRIS EDIT CHANGE END
 		user.visible_message(span_warning("[user] accidentally ignites [user.p_them()]self!"), \
 							span_userdanger("You miss [src] and accidentally light yourself on fire!"))
 		if(user.is_holding(attacking_item)) //checking if they're holding it in case TK is involved

code/modules/paperwork/paper_cutter.dm

@@ -164,13 +164,22 @@
 
 /obj/item/papercutter/proc/cut_paper(mob/user)
 	playsound(src.loc, 'sound/items/weapons/slash.ogg', 50, TRUE)
-	var/clumsy = (iscarbon(user) && HAS_TRAIT(user, TRAIT_CLUMSY) && prob(cut_self_chance))
-	to_chat(user, span_userdanger("You neatly cut [stored_paper][clumsy ? "... and your finger in the process!" : "."]"))
-	if(clumsy)
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/clumsy = FALSE
+	if(iscarbon(user))
+		var/hand_index = user.active_hand_index
+		if(HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index)))
+			clumsy = TRUE
+
+	var/accident = FALSE
+	if(clumsy && prob(cut_self_chance))
+		accident = TRUE
+	to_chat(user, span_userdanger("You neatly cut [stored_paper][accident ? "... and your finger in the process!" : "."]"))
+	if(accident)
 		var/obj/item/bodypart/finger = user.get_active_hand()
-		if (iscarbon(user))
-			var/mob/living/carbon/carbon_user = user
-			carbon_user.cause_wound_of_type_and_severity(WOUND_SLASH, finger, WOUND_SEVERITY_MODERATE, wound_source = "paper cut")
+		var/mob/living/carbon/carbon_user = user //removed a redundant carbon check here
+		carbon_user.cause_wound_of_type_and_severity(WOUND_SLASH, finger, WOUND_SEVERITY_MODERATE, wound_source = "paper cut")
+	//IRIS EDIT CHANGE END
 	stored_paper = null
 	qdel(stored_paper)
 	new /obj/item/paper/paperslip(get_turf(src))

code/modules/projectiles/gun.dm

@@ -262,7 +262,10 @@
 		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
 
 	COOLDOWN_START(src, flip_cooldown, 3 SECONDS)
-	if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(40))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(40) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+	//IRIS EDIT CHANGE END
 		// yes this will sound silly for bows and wands, but that's a "gun" moment for you
 		user.visible_message(
 			span_danger("While trying to flip [src] [user] pulls the trigger accidentally!"),
@@ -374,7 +377,10 @@
 /obj/item/gun/proc/check_botched(mob/living/user, atom/target)
 	if(clumsy_check)
 		if(istype(user))
-			if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(40))
+			//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+			var/hand_index = user.active_hand_index
+			if(prob(40) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+			//IRIS EDIT CHANGE END
 				var/target_zone = user.get_random_valid_zone(blacklisted_parts = list(BODY_ZONE_CHEST, BODY_ZONE_HEAD, BODY_ZONE_L_ARM, BODY_ZONE_R_ARM), even_weights = TRUE, bypass_warning = TRUE)
 				if(!target_zone)
 					return

code/modules/projectiles/guns/ballistic/revolver.dm

@@ -304,7 +304,9 @@
 /obj/item/gun/ballistic/revolver/reverse/can_trigger_gun(mob/living/user, akimbo_usage)
 	if(akimbo_usage)
 		return FALSE
-	if(HAS_TRAIT(user, TRAIT_CLUMSY) || is_clown_job(user.mind?.assigned_role))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK, makes this truly clown-only
+	if(is_clown_job(user.mind?.assigned_role) || user.mind?.has_antag_datum(/datum/antagonist/nukeop/clownop) || user.mind?.has_antag_datum(/datum/antagonist/nukeop/leader/clownop))
+	//IRIS EDIT CHANGE END
 		return ..()
 	if(process_fire(user, user, FALSE, null, BODY_ZONE_HEAD))
 		user.visible_message(span_warning("[user] somehow manages to shoot [user.p_them()]self in the face!"), span_userdanger("You somehow shoot yourself in the face! How the hell?!"))

code/modules/projectiles/pins.dm

@@ -149,8 +149,12 @@
 	if(QDELETED(user))  //how the hell...?
 		stack_trace("/obj/item/firing_pin/clown/ultra/pin_auth called with a [isnull(user) ? "null" : "invalid"] user.")
 		return TRUE
+	//IRIS STATION REMOVAL BEGIN - HANDEDNESS_PR, reason for removal: unneccessary due to mind checks below, currently only expands firing pin use to non-clowns (which seems unintended) on account of the existence of the "Clumsy" quirk
+	/*
 	if(HAS_TRAIT(user, TRAIT_CLUMSY)) //clumsy
 		return TRUE
+	*/
+	//IRIS STATION REMOVAL END
 	if(user.mind)
 		if(is_clown_job(user.mind.assigned_role)) //traitor clowns can use this, even though they're technically not clumsy
 			return TRUE

code/modules/reagents/reagent_containers/chem_pack.dm

@@ -19,7 +19,10 @@
 		balloon_alert(user, "sealed!")
 		return CLICK_ACTION_BLOCKING
 
-	if(iscarbon(user) && (HAS_TRAIT(user, TRAIT_CLUMSY) && prob(50)))
+	//IRIS EDIT CHANGE BEGIN - HANDEDNESS_QUIRK
+	var/hand_index = user.active_hand_index
+	if(prob(50) && (HAS_TRAIT(user, TRAIT_CLUMSY) || (HAS_TRAIT(user, TRAIT_HANDEDNESS) && IS_LEFT_INDEX(hand_index)) || (HAS_TRAIT(user, TRAIT_HANDEDNESS_LEFT) && IS_RIGHT_INDEX(hand_index))))
+	//IRIS EDIT CHANGE END
 		to_chat(user, span_warning("Uh... whoops! You accidentally spill the content of the bag onto yourself."))
 		SplashReagents(user)
 		return CLICK_ACTION_BLOCKING