Xeno Backpacks

code/__DEFINES/mobs.dm

@@ -387,6 +387,16 @@ var/list/default_onmob_icons = list(
 		WEAR_ACCESSORIES = 'icons/mob/humans/onmob/ties.dmi'
 		)
 
+var/list/default_xeno_onmob_icons = list(
+		/mob/living/carbon/Xenomorph/Runner = 'icons/mob/xenos/onmob/runner.dmi',
+		/mob/living/carbon/Xenomorph/Praetorian = 'icons/mob/xenos/onmob/praetorian.dmi',
+		/mob/living/carbon/Xenomorph/Drone = 'icons/mob/xenos/onmob/drone.dmi',
+		/mob/living/carbon/Xenomorph/Warrior = 'icons/mob/xenos/onmob/warrior.dmi',
+		/mob/living/carbon/Xenomorph/Defender = 'icons/mob/xenos/onmob/defender.dmi',
+		/mob/living/carbon/Xenomorph/Sentinel = 'icons/mob/xenos/onmob/sentinel.dmi',
+		/mob/living/carbon/Xenomorph/Spitter = 'icons/mob/xenos/onmob/spitter.dmi'
+		)
+
 // species names
 #define SPECIES_HUMAN "Human"
 #define SPECIES_YAUTJA "Yautja"

code/_onclick/adjacent.dm

@@ -100,7 +100,10 @@ Quick adjacency (to turf):
 		if(recurse > 0)
 			return loc.Adjacent(neighbor, recurse - 1)
 		return FALSE
+	else if(isXeno(loc)) //Xenos don't count as storage depth.
+		return loc.Adjacent(neighbor, recurse)
 	return ..()
+
 /*
 	Special case: This allows you to reach a door when it is visally on top of,
 	but technically behind, a fire door

code/_onclick/human.dm

@@ -92,6 +92,36 @@
 	if(user != src)
 		return . = ..()
 
+	if(isXeno(dropping))
+		var/mob/living/carbon/Xenomorph/xeno = dropping
+		if(xeno.back)
+			var/obj/item/back_item = xeno.back
+			if(xeno.stat != DEAD) // If the Xeno is alive, fight back
+				var/mob/living/carbon/carbon_user = user
+				if(!carbon_user || !carbon_user.ally_of_hivenumber(xeno.hivenumber))
+					user.KnockDown(rand(xeno.caste.tacklestrength_min, xeno.caste.tacklestrength_max))
+					playsound(user.loc, 'sound/weapons/pierce.ogg', 25, TRUE)
+					user.visible_message(SPAN_WARNING("\The [user] tried to unstrap \the [back_item] from [xeno] but instead gets a tail swipe to the head!"))
+					return
+			if(user.get_active_hand())
+				to_chat(user, SPAN_WARNING("You can't unstrap \the [back_item] from [xeno] with your hands full."))
+				return
+			user.visible_message(SPAN_NOTICE("\The [user] starts unstrapping \the [back_item] from [xeno]"), \
+			SPAN_NOTICE("You start unstrapping \the [back_item] from [xeno]."), null, 5, CHAT_TYPE_FLUFF_ACTION)
+			if(!do_after(user, HUMAN_STRIP_DELAY * user.get_skill_duration_multiplier(), INTERRUPT_ALL, BUSY_ICON_GENERIC, xeno, INTERRUPT_MOVED, BUSY_ICON_GENERIC))
+				to_chat(user, SPAN_WARNING("You were interrupted!"))
+				return
+
+			if(user.get_active_hand())
+				return
+			if(!user.Adjacent(xeno))
+				return
+			xeno.drop_inv_item_on_ground(back_item)
+			if(!back_item || QDELETED(back_item)) //Might be self-deleted?
+				return
+			user.put_in_active_hand(back_item)
+			return
+
 	if(pulling != dropping || grab_level != GRAB_AGGRESSIVE || !ishuman(dropping) || !(a_intent & INTENT_GRAB))
 		return . = ..()
 

code/game/objects/items.dm

@@ -97,7 +97,7 @@
 
 	var/mob/living/carbon/human/locked_to_mob = null	// If the item uses flag MOB_LOCK_ON_PICKUP, this is the mob owner reference.
 
-	var/list/equip_sounds//Sounds played when this item is equipped
+	var/list/equip_sounds //Sounds played when this item is equipped
 	var/list/unequip_sounds //Same but when unequipped
 
 	 ///Vision impairing effect if worn on head/mask/glasses.

code/game/objects/items/storage/backpack.dm

@@ -16,6 +16,8 @@
 	var/obj/item/card/id/locking_id = null
 	var/is_id_lockable = FALSE
 	var/lock_overridable = TRUE
+	var/xeno_icon_state = null //the icon_state for xeno's wearing this (using the dmi defined in default_xeno_onmob_icons list)
+	var/list/xeno_types = null //what xeno types can equip this backpack
 
 /obj/item/storage/backpack/attackby(obj/item/W, mob/user)
 	if(istype(W, /obj/item/card/id/) && is_id_lockable && ishuman(user))
@@ -27,6 +29,51 @@
 	if (..() && use_sound)
 		playsound(loc, use_sound, 15, TRUE, 6)
 
+/obj/item/storage/backpack/attack(mob/living/target_mob, mob/living/user)
+	if(!xeno_icon_state)
+		return ..()
+	if(target_mob.back)
+		return ..()
+	if(user.a_intent != INTENT_HELP)
+		return ..()
+	if(!xeno_types || !(target_mob.type in xeno_types))
+		return ..()
+	if(!isXeno(target_mob))
+		return ..()
+	if(HAS_TRAIT(target_mob, TRAIT_XENONID))
+		return ..() // We don't have backpack sprites for xenoids (yet?)
+	var/mob/living/carbon/Xenomorph/xeno = target_mob
+	if(target_mob.stat != DEAD) // If the Xeno is alive, fight back
+		var/mob/living/carbon/carbon_user = user
+		if(!carbon_user || !carbon_user.ally_of_hivenumber(xeno.hivenumber))
+			user.KnockDown(rand(xeno.caste.tacklestrength_min, xeno.caste.tacklestrength_max))
+			playsound(user.loc, 'sound/weapons/pierce.ogg', 25, TRUE)
+			user.visible_message(SPAN_WARNING("\The [user] tried to strap \the [src] onto [target_mob] but instead gets a tail swipe to the head!"))
+			return FALSE
+
+	user.visible_message(SPAN_NOTICE("\The [user] starts strapping \the [src] onto [target_mob]."), \
+	SPAN_NOTICE("You start strapping \the [src] onto [target_mob]."), null, 5, CHAT_TYPE_FLUFF_ACTION)
+	if(!do_after(user, HUMAN_STRIP_DELAY * user.get_skill_duration_multiplier(), INTERRUPT_ALL, BUSY_ICON_GENERIC, target_mob, INTERRUPT_MOVED, BUSY_ICON_GENERIC))
+		to_chat(user, SPAN_WARNING("You were interrupted!"))
+		return FALSE
+
+	// Ensure conditions still valid
+	if(src != user.get_active_hand())
+		return FALSE
+	if(!user.Adjacent(target_mob))
+		return FALSE
+	user.drop_inv_item_on_ground(src)
+	if(!src || QDELETED(src)) //Might be self-deleted?
+		return FALSE
+
+	// Create their vis object if needed
+	if(!xeno.backpack_icon_carrier)
+		xeno.backpack_icon_carrier = new(null, xeno)
+		xeno.vis_contents += xeno.backpack_icon_carrier
+
+	target_mob.put_in_back(src)
+	return FALSE
+
 /obj/item/storage/backpack/proc/toggle_lock(obj/item/card/id/card, mob/living/carbon/human/H)
 	if(QDELETED(locking_id))
 		to_chat(H, SPAN_NOTICE("You lock \the [src]!"))
@@ -48,6 +95,12 @@
 			storage_close(user)
 	..()
 
+/obj/item/storage/unequipped(mob/user, slot, silent)
+	if(slot == WEAR_BACK)
+		if(use_sound && !silent)
+			playsound(loc, use_sound, 15, TRUE, 6)
+	..()
+
 /obj/item/storage/backpack/dropped(mob/user)
 	mouse_opacity = initial(mouse_opacity)
 	..()
@@ -312,18 +365,24 @@ obj/item/storage/backpack/proc/compare_id(var/mob/living/carbon/human/H)
 	icon_state = "marinepack"
 	item_state = "marinepack"
 	has_gamemode_skin = TRUE //replace this with the atom_flag NO_SNOW_TYPE at some point, just rename it to like, NO_MAP_VARIANT_SKIN
+	xeno_icon_state = "marinepack"
+	xeno_types = list(/mob/living/carbon/Xenomorph/Runner, /mob/living/carbon/Xenomorph/Praetorian, /mob/living/carbon/Xenomorph/Drone, /mob/living/carbon/Xenomorph/Warrior, /mob/living/carbon/Xenomorph/Defender, /mob/living/carbon/Xenomorph/Sentinel, /mob/living/carbon/Xenomorph/Spitter)
 
 /obj/item/storage/backpack/marine/medic
 	name = "\improper USCM corpsman backpack"
 	desc = "A standard-issue backpack worn by USCM medics."
 	icon_state = "marinepack_medic"
 	item_state = "marinepack_medic"
+	xeno_icon_state = "medicpack"
+	xeno_types = list(/mob/living/carbon/Xenomorph/Runner, /mob/living/carbon/Xenomorph/Praetorian, /mob/living/carbon/Xenomorph/Drone, /mob/living/carbon/Xenomorph/Warrior, /mob/living/carbon/Xenomorph/Defender, /mob/living/carbon/Xenomorph/Sentinel, /mob/living/carbon/Xenomorph/Spitter)
 
 /obj/item/storage/backpack/marine/tech
 	name = "\improper USCM technician backpack"
 	desc = "A standard-issue backpack worn by USCM technicians."
 	icon_state = "marinepack_techi"
 	item_state = "marinepack_techi"
+	xeno_icon_state = "marinepack"
+	xeno_types = list(/mob/living/carbon/Xenomorph/Runner, /mob/living/carbon/Xenomorph/Praetorian, /mob/living/carbon/Xenomorph/Drone, /mob/living/carbon/Xenomorph/Warrior, /mob/living/carbon/Xenomorph/Defender, /mob/living/carbon/Xenomorph/Sentinel, /mob/living/carbon/Xenomorph/Spitter)
 
 /obj/item/storage/backpack/marine/satchel/intel
 	name = "\improper USCM lightweight expedition pack"
@@ -338,6 +397,7 @@ obj/item/storage/backpack/proc/compare_id(var/mob/living/carbon/human/H)
 	worn_accessible = TRUE
 	storage_slots = null
 	max_storage_space = 15
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/satchel/big //wacky squad marine loadout item, its the IO backpack.
 	name = "\improper USCM logistics IMP backpack"
@@ -347,7 +407,6 @@ obj/item/storage/backpack/proc/compare_id(var/mob/living/carbon/human/H)
 	storage_slots = null
 	max_storage_space = 21 //backpack size
 
-
 /obj/item/storage/backpack/marine/satchel/medic
 	name = "\improper USCM corpsman satchel"
 	desc = "A heavy-duty satchel used by USCM medics. It sacrifices capacity for usability. A small patch is sewn to the top flap."
@@ -490,20 +549,23 @@ GLOBAL_LIST_EMPTY_TYPED(radio_packs, /obj/item/storage/backpack/marine/satchel/r
 	desc = "A specially-designed smock with pockets for all your sniper needs."
 	icon_state = "smock"
 	worn_accessible = TRUE
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/marsoc
 	name = "\improper USCM SOF IMP tactical rucksack"
 	icon_state = "tacrucksack"
 	desc = "With a backpack like this, you'll forget you're on a hell march designed to kill you."
 	worn_accessible = TRUE
 	has_gamemode_skin = FALSE
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/rocketpack
 	name = "\improper USCM IMP M22 rocket bags"
 	desc = "A specially-designed backpack that fits to the IMP mounting frame on standard USCM pattern M3 armors. It's made of two waterproofed reinforced tubes and one smaller satchel slung at the bottom. The two silos are for rockets, but no one is stopping you from cramming other things in there."
 	icon_state = "rocketpack"
 	worn_accessible = TRUE
 	has_gamemode_skin = FALSE //monkeysfist101 never sprited a snowtype but included duplicate icons. Why?? Recolor and touch up sprite at a later date.
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/grenadepack
 	name = "\improper USCM IMP M63A1 grenade satchel"
@@ -516,6 +578,7 @@ GLOBAL_LIST_EMPTY_TYPED(radio_packs, /obj/item/storage/backpack/marine/satchel/r
 	can_hold = list(/obj/item/explosive/grenade)
 	is_id_lockable = TRUE
 	has_gamemode_skin = FALSE
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/grenadepack/attackby(obj/item/W, mob/user)
 	if(istype(W, /obj/item/storage/box/nade_box) || istype(W, /obj/item/storage/backpack/marine/grenadepack) || istype(W, /obj/item/storage/belt/grenade))
@@ -530,6 +593,7 @@ GLOBAL_LIST_EMPTY_TYPED(radio_packs, /obj/item/storage/backpack/marine/satchel/r
 	max_w_class = SIZE_HUGE
 	storage_slots = 8
 	can_hold = list(/obj/item/mortar_shell)
+	xeno_types = null
 
 /// G-8-a general pouch belt
 /obj/item/storage/backpack/general_belt
@@ -708,7 +772,7 @@ GLOBAL_LIST_EMPTY_TYPED(radio_packs, /obj/item/storage/backpack/marine/satchel/r
 	max_storage_space = 18
 	storage_slots = null
 	has_gamemode_skin = TRUE
-
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/engineerpack/Initialize()
 	. = ..()

code/game/objects/items/storage/smartpack.dm

@@ -12,6 +12,7 @@
 	max_storage_space = 14
 	worn_accessible = TRUE
 	actions_types = list(/datum/action/item_action/toggle)
+	xeno_types = null
 
 	var/show_exoskeleton = FALSE
 

code/game/objects/items/storage/storage.dm

@@ -523,6 +523,16 @@ W is always an item. stop_warning prevents messaging. user may be null.**/
 
 	return attempt_item_insertion(W, FALSE, user)
 
+/obj/item/storage/equipped(mob/user, slot, silent)
+	if ((storage_flags & STORAGE_ALLOW_EMPTY))
+		if(!isXeno(user))
+			verbs |= /obj/item/storage/verb/empty_verb
+			verbs |= /obj/item/storage/verb/toggle_click_empty
+		else
+			verbs -= /obj/item/storage/verb/empty_verb
+			verbs -= /obj/item/storage/verb/toggle_click_empty
+	..()
+
 /obj/item/storage/proc/attempt_item_insertion(obj/item/W as obj, prevent_warning = FALSE, mob/user as mob)
 	if(!can_be_inserted(W))
 		return
@@ -608,6 +618,61 @@ W is always an item. stop_warning prevents messaging. user may be null.**/
 		remove_from_storage(I, T)
 	user.visible_message(SPAN_NOTICE("[user] empties \the [src]."),
 		SPAN_NOTICE("You empty \the [src]."))
+	if (use_sound)
+		playsound(loc, use_sound, 25, TRUE, 3)
+
+/obj/item/storage/verb/shake_verb()
+	set name = "Shake"
+	set category = "Object"
+	set src in usr
+	var/mob/user_mob = usr
+	shake(user_mob, get_turf(user_mob))
+
+/obj/item/storage/proc/shake(var/mob/user, var/turf/tile)
+	if(!(storage_flags & STORAGE_ALLOW_EMPTY))
+		return
+
+	if(user.l_hand != src && user.r_hand != src && user.back != src)
+		return
+
+	if(user.is_mob_incapacitated())
+		return
+
+	if (!isturf(tile) || get_dist(src, tile) > 1)
+		tile = get_turf(src)
+
+	if (use_sound)
+		playsound(loc, use_sound, 25, TRUE, 3)
+
+	if(!length(contents))
+		if(prob(25) && isXeno(user))
+			user.drop_inv_item_to_loc(src, tile)
+			user.visible_message(SPAN_NOTICE("[user] shakes \the [src] off."),
+				SPAN_NOTICE("You shake \the [src] off."))
+		else
+			user.visible_message(SPAN_NOTICE("[user] shakes \the [src] but nothing falls out."),
+				SPAN_NOTICE("You shake \the [src] but nothing falls out. It feels empty."))
+		return
+
+	if(!allowed(user))
+		user.visible_message(SPAN_NOTICE("[user] shakes \the [src] but nothing falls out."),
+			SPAN_NOTICE("You shake \the [src] but nothing falls out. Access denied."))
+		return
+
+	if(!prob(75))
+		user.visible_message(SPAN_NOTICE("[user] shakes \the [src] but nothing falls out."),
+			SPAN_NOTICE("You shake \the [src] but nothing falls out."))
+		return
+
+	storage_close(user)
+	var/obj/item/item_obj
+	if(storage_flags & STORAGE_USING_FIFO_DRAWING)
+		item_obj = contents[1]
+	else
+		item_obj = contents[contents.len]
+	remove_from_storage(item_obj, tile)
+	user.visible_message(SPAN_NOTICE("[user] shakes \the [src] and \a [item_obj] falls out."),
+		SPAN_NOTICE("You shake \the [src] and \a [item_obj] falls out."))
 
 /obj/item/storage/proc/dump_ammo_to(obj/item/ammo_magazine/ammo_dumping, mob/user, var/amount_to_dump = 5) //amount_to_dump should never actually need to be used as default value
 	if(user.action_busy)
@@ -674,6 +739,7 @@ W is always an item. stop_warning prevents messaging. user may be null.**/
 	if (!(storage_flags & STORAGE_ALLOW_EMPTY))
 		verbs -= /obj/item/storage/verb/empty_verb
 		verbs -= /obj/item/storage/verb/toggle_click_empty
+		verbs -= /obj/item/storage/verb/shake_verb
 
 	boxes = new
 	boxes.name = "storage"

code/modules/cm_aliens/structures/fruit.dm

@@ -323,7 +323,8 @@
 	desc = "A strange fruit that you could eat.. if you REALLY wanted to. Its roots seem to twitch every so often."
 	icon = 'icons/mob/xenos/fruits.dmi'
 	icon_state = "fruit_lesser_item"
-	w_class = SIZE_LARGE
+	w_class = SIZE_MEDIUM
+	storage_cost = SIZE_LARGE
 	bitesize = 2
 	var/mob/living/carbon/Xenomorph/bound_xeno //Drone linked to this fruit
 	var/fruit_type = /obj/effect/alien/resin/fruit

code/modules/cm_marines/Donor_Items.dm

@@ -1309,6 +1309,8 @@
 	desc = "Black gloves, favored by Special Operations teams.  DONOR ITEM"
 	name = "Black Ops Black Gloves"
 
+/obj/item/storage/backpack/marine/fluff
+	xeno_types = null
 
 /obj/item/storage/backpack/marine/fluff/Sado
 	name = "Tanya's Backpack"

code/modules/mob/inventory.dm

@@ -60,7 +60,7 @@
 	if(hand)	return put_in_r_hand(W)
 	else		return put_in_l_hand(W)
 
-//Puts the item our active hand if possible. Failing that it tries our inactive hand. Returns 1 on success.
+//Puts the item into our active hand if possible. Failing that it tries our inactive hand. Returns 1 on success.
 //If both fail it drops it on the floor and returns 0.
 //This is probably the main one you need to know :)
 /mob/proc/put_in_hands(var/obj/item/W)
@@ -76,7 +76,24 @@
 		W.dropped(src)
 		return FALSE
 
-
+//Puts the item into our back if possible. Returns 1 on success.
+/mob/proc/put_in_back(var/obj/item/item)
+	if(!item)
+		return FALSE
+	if(!istype(item))
+		return FALSE
+	if(back)
+		return FALSE
+	if(item.loc == src && !(item.flags_item & DELONDROP))
+		item.dropped(src)
+	item.pickup(src)
+	item.forceMove(src)
+	back = item
+	item.layer = ABOVE_HUD_LAYER
+	item.plane = ABOVE_HUD_PLANE
+	item.equipped(src, WEAR_BACK)
+	update_inv_back()
+	return TRUE
 
 /mob/proc/drop_item_v()		//this is dumb.
 	if(stat == CONSCIOUS && isturf(loc))
@@ -366,3 +383,5 @@
 		return WEAR_L_HAND
 	if(I == r_hand)
 		return WEAR_R_HAND
+	if(I == back)
+		return WEAR_BACK