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Bubberstation/code/modules/mob/mob.dm
supersayu c172e52dce Adds telekinesis to click code. Fixes issue #1202, #1129, #247.
This adds two atom procs, attack_tk() and attack_self_tk().  attack_tk is used as per attack_hand; attack_self_tk exists on all atoms (not just items) but is similar to the item proc, but without the assumption that it is in the user's hand.

Removes the functionality where entering throw mode would create a tk grab, as it is redundant.

As a default, attack_tk does the following:
* Creates a telekinetic throw for items and un-anchored objects
* Does an attack_hand (paw, animal, etc) for anchored objects
* Does nothing to mobs

As a default, attack_self_tk does nothing.  An attack_self_tk was added to closets to open and close them since that's a common thing.

The following items have added attack_tk procs:
* Fire axe cabinet, extinguisher cabinet, and bedsheet bin will drop into their square instead of putting it in your hand
* Doors only open telekinetically if they require no access
* Chairs will rotate if nobody is buckled to them
* Filing cabinets will remove a paper at random.
* Tables and racks return to prevent telehulk smash

This is INCOMPLETE.  Adding proper TK interaction to everything is something best done in pieces.

In particular, interacting with mobs and items both open up the floodgates for bugs, so we/I need to decide how we want it to go before we commit, and then fix bugs along the way.  Stumbling forward, fixing bugs, and then changing course halfway would be a bad idea.
2013-09-17 18:19:09 -04:00

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/mob/Del()//This makes sure that mobs with clients/keys are not just deleted from the game.
mob_list -= src
dead_mob_list -= src
living_mob_list -= src
ghostize()
..()
var/next_mob_id = 0
/mob/New()
tag = "mob_[next_mob_id++]"
mob_list += src
if(stat == DEAD)
dead_mob_list += src
else
living_mob_list += src
..()
/mob/proc/Cell()
set category = "Admin"
set hidden = 1
if(!loc) return 0
var/datum/gas_mixture/environment = loc.return_air()
var/t = "\blue Coordinates: [x],[y] \n"
t+= "\red Temperature: [environment.temperature] \n"
t+= "\blue Nitrogen: [environment.nitrogen] \n"
t+= "\blue Oxygen: [environment.oxygen] \n"
t+= "\blue Plasma : [environment.toxins] \n"
t+= "\blue Carbon Dioxide: [environment.carbon_dioxide] \n"
for(var/datum/gas/trace_gas in environment.trace_gases)
usr << "\blue [trace_gas.type]: [trace_gas.moles] \n"
usr.show_message(t, 1)
/mob/proc/show_message(msg, type, alt, alt_type)//Message, type of message (1 or 2), alternative message, alt message type (1 or 2)
if(!client) return
if (type)
if(type & 1 && (sdisabilities & BLIND || blinded || paralysis) )//Vision related
if (!( alt ))
return
else
msg = alt
type = alt_type
if (type & 2 && (sdisabilities & DEAF || ear_deaf))//Hearing related
if (!( alt ))
return
else
msg = alt
type = alt_type
if ((type & 1 && sdisabilities & BLIND))
return
// Added voice muffling for Issue 41.
if(stat == UNCONSCIOUS || sleeping > 0)
src << "<I>... You can almost hear someone talking ...</I>"
else
src << msg
return
// Show a message to all mobs in sight of this one
// This would be for visible actions by the src mob
// message is the message output to anyone who can see e.g. "[src] does something!"
// self_message (optional) is what the src mob sees e.g. "You do something!"
// blind_message (optional) is what blind people will hear e.g. "You hear something!"
/mob/visible_message(var/message, var/self_message, var/blind_message)
for(var/mob/M in viewers(src))
var/msg = message
if(self_message && M==src)
msg = self_message
M.show_message( msg, 1, blind_message, 2)
// Show a message to all mobs in sight of this atom
// Use for objects performing visible actions
// message is output to anyone who can see, e.g. "The [src] does something!"
// blind_message (optional) is what blind people will hear e.g. "You hear something!"
/atom/proc/visible_message(var/message, var/blind_message)
for(var/mob/M in viewers(src))
M.show_message( message, 1, blind_message, 2)
/mob/proc/movement_delay()
return 0
/mob/proc/Life()
return
/mob/proc/get_item_by_slot(slot_id)
switch(slot_id)
if(slot_l_hand)
return l_hand
if(slot_r_hand)
return r_hand
return null
/mob/proc/ret_grab(obj/effect/list_container/mobl/L as obj, flag)
if ((!( istype(l_hand, /obj/item/weapon/grab) ) && !( istype(r_hand, /obj/item/weapon/grab) )))
if (!( L ))
return null
else
return L.container
else
if (!( L ))
L = new /obj/effect/list_container/mobl( null )
L.container += src
L.master = src
if (istype(l_hand, /obj/item/weapon/grab))
var/obj/item/weapon/grab/G = l_hand
if (!( L.container.Find(G.affecting) ))
L.container += G.affecting
if (G.affecting)
G.affecting.ret_grab(L, 1)
if (istype(r_hand, /obj/item/weapon/grab))
var/obj/item/weapon/grab/G = r_hand
if (!( L.container.Find(G.affecting) ))
L.container += G.affecting
if (G.affecting)
G.affecting.ret_grab(L, 1)
if (!( flag ))
if (L.master == src)
var/list/temp = list( )
temp += L.container
//L = null
del(L)
return temp
else
return L.container
return
/mob/proc/restrained()
return
//This proc is called whenever someone clicks an inventory ui slot.
/mob/proc/attack_ui(slot)
var/obj/item/W = get_active_hand()
if(istype(W))
if(equip_to_slot_if_possible(W, slot,0,0,0))
return 1
if(!W)
// Activate the item
var/obj/item/I = get_item_by_slot(slot)
if(istype(I))
I.attack_hand(src)
return 0
/mob/proc/put_in_any_hand_if_possible(obj/item/W as obj, del_on_fail = 0, disable_warning = 1, redraw_mob = 1)
if(equip_to_slot_if_possible(W, slot_l_hand, del_on_fail, disable_warning, redraw_mob))
return 1
else if(equip_to_slot_if_possible(W, slot_r_hand, del_on_fail, disable_warning, redraw_mob))
return 1
return 0
//This is a SAFE proc. Use this instead of equip_to_splot()!
//set del_on_fail to have it delete W if it fails to equip
//set disable_warning to disable the 'you are unable to equip that' warning.
//unset redraw_mob to prevent the mob from being redrawn at the end.
/mob/proc/equip_to_slot_if_possible(obj/item/W as obj, slot, del_on_fail = 0, disable_warning = 0, redraw_mob = 1)
if(!istype(W)) return 0
if(!W.mob_can_equip(src, slot, disable_warning))
if(del_on_fail)
del(W)
else
if(!disable_warning)
src << "\red You are unable to equip that." //Only print if del_on_fail is false
return 0
equip_to_slot(W, slot, redraw_mob) //This proc should not ever fail.
return 1
//This is an UNSAFE proc. It merely handles the actual job of equipping. All the checks on whether you can or can't eqip need to be done before! Use mob_can_equip() for that task.
//In most cases you will want to use equip_to_slot_if_possible()
/mob/proc/equip_to_slot(obj/item/W as obj, slot)
return
//This is just a commonly used configuration for the equip_to_slot_if_possible() proc, used to equip people when the rounds tarts and when events happen and such.
/mob/proc/equip_to_slot_or_del(obj/item/W as obj, slot)
equip_to_slot_if_possible(W, slot, 1, 1, 0)
//The list of slots by priority. equip_to_appropriate_slot() uses this list. Doesn't matter if a mob type doesn't have a slot.
var/list/slot_equipment_priority = list( \
slot_back,\
slot_wear_id,\
slot_w_uniform,\
slot_wear_suit,\
slot_wear_mask,\
slot_head,\
slot_shoes,\
slot_gloves,\
slot_ears,\
slot_glasses,\
slot_belt,\
slot_s_store,\
slot_l_store,\
slot_r_store\
)
//puts the item "W" into an appropriate slot in a human's inventory
//returns 0 if it cannot, 1 if successful
/mob/proc/equip_to_appropriate_slot(obj/item/W)
if(!istype(W)) return 0
for(var/slot in slot_equipment_priority)
if(equip_to_slot_if_possible(W, slot, 0, 1, 1)) //del_on_fail = 0; disable_warning = 0; redraw_mob = 1
return 1
return 0
/mob/proc/reset_view(atom/A)
if (client)
if (istype(A, /atom/movable))
client.perspective = EYE_PERSPECTIVE
client.eye = A
else
if (isturf(loc))
client.eye = client.mob
client.perspective = MOB_PERSPECTIVE
else
client.perspective = EYE_PERSPECTIVE
client.eye = loc
return
/mob/proc/show_inv(mob/user)
user.set_machine(src)
var/dat = {"
<HR>
<B><FONT size=3>[name]</FONT></B>
<HR>
<BR><B>Left Hand:</B> <A href='?src=\ref[src];item=[slot_l_hand]'> [l_hand ? l_hand : "Nothing"]</A>
<BR><B>Right Hand:</B> <A href='?src=\ref[src];item=[slot_r_hand]'> [r_hand ? r_hand : "Nothing"]</A>
<BR><A href='?src=\ref[user];mach_close=mob\ref[src]'>Close</A>
"}
user << browse(dat, "window=mob\ref[src];size=325x500")
onclose(user, "mob\ref[src]")
/mob/verb/mode()
set name = "Activate Held Object"
set category = "Object"
set src = usr
if(hand)
var/obj/item/W = l_hand
if (W)
W.attack_self(src)
update_inv_l_hand(0)
else
var/obj/item/W = r_hand
if (W)
W.attack_self(src)
update_inv_r_hand(0)
if(next_move < world.time)
next_move = world.time + 2
return
/*
/mob/verb/dump_source()
var/master = "<PRE>"
for(var/t in typesof(/area))
master += text("[]\n", t)
//Foreach goto(26)
src << browse(master)
return
*/
/mob/verb/memory()
set name = "Notes"
set category = "IC"
if(mind)
mind.show_memory(src)
else
src << "The game appears to have misplaced your mind datum, so we can't show you your notes."
/mob/verb/add_memory(msg as message)
set name = "Add Note"
set category = "IC"
msg = copytext(msg, 1, MAX_MESSAGE_LEN)
msg = sanitize(msg)
if(mind)
mind.store_memory(msg)
else
src << "The game appears to have misplaced your mind datum, so we can't show you your notes."
/mob/proc/store_memory(msg as message, popup, sane = 1)
msg = copytext(msg, 1, MAX_MESSAGE_LEN)
if (sane)
msg = sanitize(msg)
if (length(memory) == 0)
memory += msg
else
memory += "<BR>[msg]"
if (popup)
memory()
/*
/mob/verb/help()
set name = "Help"
src << browse('html/help.html', "window=help")
return
*/
/mob/verb/abandon_mob()
set name = "Respawn"
set category = "OOC"
if (!( abandon_allowed ))
return
if ((stat != 2 || !( ticker )))
usr << "\blue <B>You must be dead to use this!</B>"
return
log_game("[usr.name]/[usr.key] used abandon mob.")
usr << "\blue <B>Please roleplay correctly!</B>"
if(!client)
log_game("[usr.key] AM failed due to disconnect.")
return
client.screen.Cut()
if(!client)
log_game("[usr.key] AM failed due to disconnect.")
return
var/mob/new_player/M = new /mob/new_player()
if(!client)
log_game("[usr.key] AM failed due to disconnect.")
del(M)
return
M.key = key
// M.Login() //wat
return
/client/verb/changes()
set name = "Changelog"
set category = "OOC"
getFiles(
'html/postcardsmall.jpg',
'html/somerights20.png',
'html/88x31.png',
'html/bug-minus.png',
'html/cross-circle.png',
'html/hard-hat-exclamation.png',
'html/image-minus.png',
'html/image-plus.png',
'html/music-minus.png',
'html/music-plus.png',
'html/tick-circle.png',
'html/wrench-screwdriver.png',
'html/spell-check.png',
'html/burn-exclamation.png',
'html/chevron.png',
'html/chevron-expand.png',
'html/changelog.css',
'html/changelog.js',
'html/changelog.html'
)
src << browse('html/changelog.html', "window=changes;size=675x650")
if(prefs.lastchangelog != changelog_hash)
prefs.lastchangelog = changelog_hash
prefs.save_preferences()
winset(src, "rpane.changelog", "background-color=none;font-style=;")
/mob/verb/observe()
set name = "Observe"
set category = "OOC"
var/is_admin = 0
if(check_rights_for(client,R_ADMIN))
is_admin = 1
else if(stat != DEAD || istype(src, /mob/new_player))
usr << "\blue You must be observing to use this!"
return
if(is_admin && stat == DEAD)
is_admin = 0
var/list/names = list()
var/list/namecounts = list()
var/list/creatures = list()
for(var/obj/O in world) //EWWWWWWWWWWWWWWWWWWWWWWWW ~needs to be optimised
if(!O.loc)
continue
if(istype(O, /obj/item/weapon/disk/nuclear))
var/name = "Nuclear Disk"
if (names.Find(name))
namecounts[name]++
name = "[name] ([namecounts[name]])"
else
names.Add(name)
namecounts[name] = 1
creatures[name] = O
if(istype(O, /obj/machinery/singularity))
var/name = "Singularity"
if (names.Find(name))
namecounts[name]++
name = "[name] ([namecounts[name]])"
else
names.Add(name)
namecounts[name] = 1
creatures[name] = O
if(istype(O, /obj/machinery/bot))
var/name = "BOT: [O.name]"
if (names.Find(name))
namecounts[name]++
name = "[name] ([namecounts[name]])"
else
names.Add(name)
namecounts[name] = 1
creatures[name] = O
for(var/mob/M in sortAtom(mob_list))
var/name = M.name
if (names.Find(name))
namecounts[name]++
name = "[name] ([namecounts[name]])"
else
names.Add(name)
namecounts[name] = 1
creatures[name] = M
client.perspective = EYE_PERSPECTIVE
var/eye_name = null
var/ok = "[is_admin ? "Admin Observe" : "Observe"]"
eye_name = input("Please, select a player!", ok, null, null) as null|anything in creatures
if (!eye_name)
return
var/mob/mob_eye = creatures[eye_name]
if(client && mob_eye)
client.eye = mob_eye
if (is_admin)
client.adminobs = 1
if(mob_eye == client.mob || client.eye == client.mob)
client.adminobs = 0
/mob/verb/cancel_camera()
set name = "Cancel Camera View"
set category = "OOC"
reset_view(null)
unset_machine()
if(istype(src, /mob/living))
if(src:cameraFollow)
src:cameraFollow = null
/mob/Topic(href, href_list)
if(href_list["mach_close"])
var/t1 = text("window=[href_list["mach_close"]]")
unset_machine()
src << browse(null, t1)
if(href_list["refresh"])
if(machine && in_range(src, usr))
show_inv(machine)
if(!usr.stat && usr.canmove && !usr.restrained() && Adjacent(usr))
if(href_list["item"])
var/slot = text2num(href_list["item"])
var/obj/item/what = get_item_by_slot(slot)
if(what && what.canremove)
visible_message("<span class='danger'>[usr] tries to remove [src]'s [what.name].</span>", \
"<span class='userdanger'>[usr] tries to remove [src]'s [what.name].</span>")
what.add_fingerprint(usr)
if(do_mob(usr, src, STRIP_DELAY))
if(what && Adjacent(usr))
u_equip(what)
else
what = usr.get_active_hand()
if(what && what.mob_can_equip(src, slot, 1))
visible_message("<span class='notice'>[usr] tries to put [what] on [src].</span>")
if(do_mob(usr, src, STRIP_DELAY * 0.5))
if(what && Adjacent(usr))
usr.u_equip(what)
equip_to_slot_if_possible(what, slot, 0, 1)
if(usr.machine == src)
if(Adjacent(usr))
show_inv(usr)
else
usr << browse(null,"window=mob\ref[src]")
/mob/MouseDrop(mob/M)
..()
if(M != usr) return
if(usr == src) return
if(!Adjacent(usr)) return
if(istype(M, /mob/living/silicon/ai)) return
show_inv(usr)
/mob/verb/stop_pulling()
set name = "Stop Pulling"
set category = "IC"
if(pulling)
pulling.pulledby = null
pulling = null
/mob/proc/start_pulling(var/atom/movable/AM)
if ( !AM || !usr || src==AM || !isturf(src.loc) ) //if there's no person pulling OR the person is pulling themself OR the object being pulled is inside something: abort!
return
if (!( AM.anchored ))
// If we're pulling something then drop what we're currently pulling and pull this instead.
if(pulling)
// Are we trying to pull something we are already pulling? Then just stop here, no need to continue.
if(AM == pulling)
return
stop_pulling()
src.pulling = AM
AM.pulledby = src
if(ismob(AM))
var/mob/M = AM
if(!iscarbon(src))
M.LAssailant = null
else
M.LAssailant = usr
/mob/proc/can_use_hands()
return
/mob/proc/is_active()
return (0 >= usr.stat)
/mob/proc/see(message)
if(!is_active())
return 0
src << message
return 1
/mob/proc/show_viewers(message)
for(var/mob/M in viewers())
M.see(message)
/*
adds a dizziness amount to a mob
use this rather than directly changing var/dizziness
since this ensures that the dizzy_process proc is started
currently only humans get dizzy
value of dizziness ranges from 0 to 1000
below 100 is not dizzy
*/
/mob/proc/make_dizzy(var/amount)
if(!istype(src, /mob/living/carbon/human)) // for the moment, only humans get dizzy
return
dizziness = min(1000, dizziness + amount) // store what will be new value
// clamped to max 1000
if(dizziness > 100 && !is_dizzy)
spawn(0)
dizzy_process()
/*
dizzy process - wiggles the client's pixel offset over time
spawned from make_dizzy(), will terminate automatically when dizziness gets <100
note dizziness decrements automatically in the mob's Life() proc.
*/
/mob/proc/dizzy_process()
is_dizzy = 1
while(dizziness > 100)
if(client)
var/amplitude = dizziness*(sin(dizziness * 0.044 * world.time) + 1) / 70
client.pixel_x = amplitude * sin(0.008 * dizziness * world.time)
client.pixel_y = amplitude * cos(0.008 * dizziness * world.time)
sleep(1)
//endwhile - reset the pixel offsets to zero
is_dizzy = 0
if(client)
client.pixel_x = 0
client.pixel_y = 0
// jitteriness - copy+paste of dizziness
/mob/proc/make_jittery(var/amount)
if(!istype(src, /mob/living/carbon/human)) // for the moment, only humans get dizzy
return
jitteriness = min(1000, jitteriness + amount) // store what will be new value
// clamped to max 1000
if(jitteriness > 100 && !is_jittery)
spawn(0)
jittery_process()
// Typo from the oriignal coder here, below lies the jitteriness process. So make of his code what you will, the previous comment here was just a copypaste of the above.
/mob/proc/jittery_process()
var/old_x = pixel_x
var/old_y = pixel_y
is_jittery = 1
while(jitteriness > 100)
// var/amplitude = jitteriness*(sin(jitteriness * 0.044 * world.time) + 1) / 70
// pixel_x = amplitude * sin(0.008 * jitteriness * world.time)
// pixel_y = amplitude * cos(0.008 * jitteriness * world.time)
var/amplitude = min(4, jitteriness / 100)
pixel_x = rand(-amplitude, amplitude)
pixel_y = rand(-amplitude/3, amplitude/3)
sleep(1)
//endwhile - reset the pixel offsets to zero
is_jittery = 0
pixel_x = old_x
pixel_y = old_y
/mob/Stat()
..()
if(statpanel("Status")) //not looking at that panel
if(client && client.holder)
stat(null,"Location:\t([x], [y], [z])")
stat(null,"CPU:\t[world.cpu]")
stat(null,"Instances:\t[world.contents.len]")
if(master_controller)
stat(null,"MasterController-[last_tick_duration] ([master_controller.processing?"On":"Off"]-[controller_iteration])")
stat(null,"Air-[master_controller.air_cost]\t#[air_master.active_turfs.len]")
stat(null,"Sun-[master_controller.sun_cost]")
stat(null,"Mob-[master_controller.mobs_cost]\t#[mob_list.len]")
stat(null,"Dis-[master_controller.diseases_cost]\t#[active_diseases.len]")
stat(null,"Mch-[master_controller.machines_cost]\t#[machines.len]")
stat(null,"Obj-[master_controller.objects_cost]\t#[processing_objects.len]")
stat(null,"Net-[master_controller.networks_cost]\tPnet-[master_controller.powernets_cost]")
stat(null,"NanoUI-[master_controller.nano_cost]\t#[nanomanager.processing_uis.len]")
stat(null,"Tick-[master_controller.ticker_cost]\tALL-[master_controller.total_cost]")
else
stat(null,"MasterController-ERROR")
if(spell_list.len)
for(var/obj/effect/proc_holder/spell/S in spell_list)
switch(S.charge_type)
if("recharge")
statpanel("Spells","[S.charge_counter/10.0]/[S.charge_max/10]",S)
if("charges")
statpanel("Spells","[S.charge_counter]/[S.charge_max]",S)
if("holdervar")
statpanel("Spells","[S.holder_var_type] [S.holder_var_amount]",S)
// facing verbs
/mob/proc/canface()
if(!canmove) return 0
if(client.moving) return 0
if(world.time < client.move_delay) return 0
if(stat==2) return 0
if(anchored) return 0
if(monkeyizing) return 0
if(restrained()) return 0
return 1
//Updates canmove, lying and icons. Could perhaps do with a rename but I can't think of anything to describe it.
/mob/proc/update_canmove()
if(buckled)
anchored = 1
canmove = 0
if( istype(buckled,/obj/structure/stool/bed/chair) )
lying = 0
else
lying = 1
else if( stat || weakened || paralysis || resting || sleeping || (status_flags & FAKEDEATH) )
lying = 1
canmove = 0
else if( stunned )
// lying = 0
canmove = 0
else
lying = 0
canmove = 1
if(lying)
density = 0
drop_l_hand()
drop_r_hand()
else
density = 1
//Temporarily moved here from the various life() procs
//I'm fixing stuff incrementally so this will likely find a better home.
//It just makes sense for now. ~Carn
if( update_icon ) //forces a full overlay update
update_icon = 0
regenerate_icons()
else if( lying != lying_prev )
update_icons()
return canmove
/mob/verb/eastface()
set hidden = 1
if(!canface()) return 0
dir = EAST
client.move_delay += movement_delay()
return 1
/mob/verb/westface()
set hidden = 1
if(!canface()) return 0
dir = WEST
client.move_delay += movement_delay()
return 1
/mob/verb/northface()
set hidden = 1
if(!canface()) return 0
dir = NORTH
client.move_delay += movement_delay()
return 1
/mob/verb/southface()
set hidden = 1
if(!canface()) return 0
dir = SOUTH
client.move_delay += movement_delay()
return 1
/mob/proc/IsAdvancedToolUser()//This might need a rename but it should replace the can this mob use things check
return 0
/mob/proc/Stun(amount)
if(status_flags & CANSTUN)
stunned = max(max(stunned,amount),0) //can't go below 0, getting a low amount of stun doesn't lower your current stun
return
/mob/proc/SetStunned(amount) //if you REALLY need to set stun to a set amount without the whole "can't go below current stunned"
if(status_flags & CANSTUN)
stunned = max(amount,0)
return
/mob/proc/AdjustStunned(amount)
if(status_flags & CANSTUN)
stunned = max(stunned + amount,0)
return
/mob/proc/Weaken(amount)
if(status_flags & CANWEAKEN)
weakened = max(max(weakened,amount),0)
update_canmove() //updates lying, canmove and icons
return
/mob/proc/SetWeakened(amount)
if(status_flags & CANWEAKEN)
weakened = max(amount,0)
update_canmove() //updates lying, canmove and icons
return
/mob/proc/AdjustWeakened(amount)
if(status_flags & CANWEAKEN)
weakened = max(weakened + amount,0)
update_canmove() //updates lying, canmove and icons
return
/mob/proc/Paralyse(amount)
if(status_flags & CANPARALYSE)
paralysis = max(max(paralysis,amount),0)
return
/mob/proc/SetParalysis(amount)
if(status_flags & CANPARALYSE)
paralysis = max(amount,0)
return
/mob/proc/AdjustParalysis(amount)
if(status_flags & CANPARALYSE)
paralysis = max(paralysis + amount,0)
return
/mob/proc/Sleeping(amount)
sleeping = max(max(sleeping,amount),0)
return
/mob/proc/SetSleeping(amount)
sleeping = max(amount,0)
return
/mob/proc/AdjustSleeping(amount)
sleeping = max(sleeping + amount,0)
return
/mob/proc/Resting(amount)
resting = max(max(resting,amount),0)
return
/mob/proc/SetResting(amount)
resting = max(amount,0)
return
/mob/proc/AdjustResting(amount)
resting = max(resting + amount,0)
return