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twohanded.dm
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twohanded.dm
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/**
* Two Handed Component
*
* When applied to an item it will make it two handed
*
*/
/datum/component/two_handed
dupe_mode = COMPONENT_DUPE_UNIQUE_PASSARGS // Only one of the component can exist on an item
var/wielded = FALSE /// Are we holding the two handed item properly
var/force_multiplier = 0 /// The multiplier applied to force when wielded, does not work with force_wielded, and force_unwielded
var/force_wielded = 0 /// The force of the item when weilded
var/force_unwielded = 0 /// The force of the item when unweilded
var/wieldsound = FALSE /// Play sound when wielded
var/unwieldsound = FALSE /// Play sound when unwielded
var/attacksound = FALSE /// Play sound on attack when wielded
var/require_twohands = FALSE /// Does it have to be held in both hands
var/icon_wielded = FALSE /// The icon that will be used when wielded
var/obj/item/offhand/offhand_item = null /// Reference to the offhand created for the item
var/sharpened_increase = 0 /// The amount of increase recived from sharpening the item
/// A callback on the parent to be called when the item is wielded
var/datum/callback/wield_callback
/// A callback on the parent to be called when the item is unwielded
var/datum/callback/unwield_callback
/**
* Two Handed component
*
* vars:
* * require_twohands (optional) Does the item need both hands to be carried
* * wieldsound (optional) The sound to play when wielded
* * unwieldsound (optional) The sound to play when unwielded
* * attacksound (optional) The sound to play when wielded and attacking
* * force_multiplier (optional) The force multiplier when wielded, do not use with force_wielded, and force_unwielded
* * force_wielded (optional) The force setting when the item is wielded, do not use with force_multiplier
* * force_unwielded (optional) The force setting when the item is unwielded, do not use with force_multiplier
* * icon_wielded (optional) The icon to be used when wielded
*/
/datum/component/two_handed/Initialize(require_twohands=FALSE, wieldsound=FALSE, unwieldsound=FALSE, attacksound=FALSE, \
force_multiplier=0, force_wielded=0, force_unwielded=0, icon_wielded=FALSE, \
datum/callback/wield_callback, datum/callback/unwield_callback)
if(!isitem(parent))
return COMPONENT_INCOMPATIBLE
src.require_twohands = require_twohands
src.wieldsound = wieldsound
src.unwieldsound = unwieldsound
src.attacksound = attacksound
src.force_multiplier = force_multiplier
src.force_wielded = force_wielded
src.force_unwielded = force_unwielded
src.icon_wielded = icon_wielded
src.wield_callback = wield_callback
src.unwield_callback = unwield_callback
if(require_twohands)
ADD_TRAIT(parent, TRAIT_NEEDS_TWO_HANDS, ABSTRACT_ITEM_TRAIT)
/datum/component/two_handed/Destroy(force, silent)
offhand_item = null
wield_callback = null
unwield_callback = null
return ..()
// Inherit the new values passed to the component
/datum/component/two_handed/InheritComponent(datum/component/two_handed/new_comp, original, require_twohands, wieldsound, unwieldsound, attacksound, \
force_multiplier, force_wielded, force_unwielded, icon_wielded, \
datum/callback/wield_callback, datum/callback/unwield_callback)
if(!original)
return
if(require_twohands)
src.require_twohands = require_twohands
if(wieldsound)
src.wieldsound = wieldsound
if(unwieldsound)
src.unwieldsound = unwieldsound
if(attacksound)
src.attacksound = attacksound
if(force_multiplier)
src.force_multiplier = force_multiplier
if(force_wielded)
src.force_wielded = force_wielded
if(force_unwielded)
src.force_unwielded = force_unwielded
if(icon_wielded)
src.icon_wielded = icon_wielded
if(wield_callback)
src.wield_callback = wield_callback
if(unwield_callback)
src.unwield_callback = unwield_callback
// register signals withthe parent item
/datum/component/two_handed/RegisterWithParent()
RegisterSignal(parent, COMSIG_ITEM_EQUIPPED, PROC_REF(on_equip))
RegisterSignal(parent, COMSIG_ITEM_DROPPED, PROC_REF(on_drop))
RegisterSignal(parent, COMSIG_ITEM_ATTACK_SELF, PROC_REF(on_attack_self))
RegisterSignal(parent, COMSIG_ITEM_ATTACK, PROC_REF(on_attack))
RegisterSignal(parent, COMSIG_ATOM_UPDATE_ICON, PROC_REF(on_update_icon))
RegisterSignal(parent, COMSIG_MOVABLE_MOVED, PROC_REF(on_moved))
RegisterSignal(parent, COMSIG_ITEM_SHARPEN_ACT, PROC_REF(on_sharpen))
RegisterSignal(parent, COMSIG_ITEM_APPLY_FANTASY_BONUSES, PROC_REF(apply_fantasy_bonuses))
RegisterSignal(parent, COMSIG_ITEM_REMOVE_FANTASY_BONUSES, PROC_REF(remove_fantasy_bonuses))
/datum/component/two_handed/proc/apply_fantasy_bonuses(obj/item/source, bonus)
SIGNAL_HANDLER
force_wielded = source.modify_fantasy_variable("force_wielded", force_wielded, bonus)
force_unwielded = source.modify_fantasy_variable("force_unwielded", force_unwielded, bonus)
if(wielded && ismob(source.loc))
unwield(source.loc)
if(force_multiplier)
force_multiplier = source.modify_fantasy_variable("force_multiplier", force_multiplier, bonus/10, minimum = 1)
/datum/component/two_handed/proc/remove_fantasy_bonuses(obj/item/source, bonus)
SIGNAL_HANDLER
force_wielded = source.reset_fantasy_variable("force_wielded", force_wielded)
force_unwielded = source.reset_fantasy_variable("force_unwielded", force_unwielded)
if(wielded && ismob(source.loc))
unwield(source.loc)
force_multiplier = source.reset_fantasy_variable("force_multiplier", force_multiplier)
// Remove all siginals registered to the parent item
/datum/component/two_handed/UnregisterFromParent()
UnregisterSignal(parent, list(COMSIG_ITEM_EQUIPPED,
COMSIG_ITEM_DROPPED,
COMSIG_ITEM_ATTACK_SELF,
COMSIG_ITEM_ATTACK,
COMSIG_ATOM_UPDATE_ICON,
COMSIG_MOVABLE_MOVED,
COMSIG_ITEM_SHARPEN_ACT))
/// Triggered on equip of the item containing the component
/datum/component/two_handed/proc/on_equip(datum/source, mob/user, slot)
SIGNAL_HANDLER
if(require_twohands && (slot & ITEM_SLOT_HANDS)) // force equip the item
wield(user)
if(!user.is_holding(parent) && wielded && !require_twohands)
unwield(user)
/// Triggered on drop of item containing the component
/datum/component/two_handed/proc/on_drop(datum/source, mob/user)
SIGNAL_HANDLER
if(require_twohands) //Don't let the item fall to the ground and cause bugs if it's actually being equipped on another slot.
unwield(user, FALSE, FALSE)
if(wielded)
unwield(user)
if(source == offhand_item && !QDELETED(source))
offhand_item = null
qdel(source)
/// Triggered on destroy of the component's offhand
/datum/component/two_handed/proc/on_destroy(datum/source)
SIGNAL_HANDLER
offhand_item = null
/// Triggered on attack self of the item containing the component
/datum/component/two_handed/proc/on_attack_self(datum/source, mob/user)
SIGNAL_HANDLER
if(!require_twohands)
if(wielded)
unwield(user)
else if(user.is_holding(parent))
wield(user)
/**
* Wield the two handed item in both hands
*
* vars:
* * user The mob/living/carbon that is wielding the item
*/
/datum/component/two_handed/proc/wield(mob/living/carbon/user)
if(wielded)
return
if(HAS_TRAIT(user, TRAIT_NO_TWOHANDING))
if(require_twohands)
to_chat(user, span_warning("You feel too weak to wield this!"))
user.dropItemToGround(parent, force=TRUE)
else
to_chat(user, span_warning("You feel too weak to wield this with both hands!"))
return
if(user.get_inactive_held_item())
if(require_twohands)
to_chat(user, span_notice("[parent] is too cumbersome to carry in one hand!"))
user.dropItemToGround(parent, force=TRUE)
else
to_chat(user, span_warning("You need your other hand to be empty!"))
return
if(user.usable_hands < 2)
if(require_twohands)
user.dropItemToGround(parent, force=TRUE)
to_chat(user, span_warning("You don't have enough intact hands."))
return
// wield update status
if(SEND_SIGNAL(parent, COMSIG_TWOHANDED_WIELD, user) & COMPONENT_TWOHANDED_BLOCK_WIELD)
return // blocked wield from item
wielded = TRUE
ADD_TRAIT(parent, TRAIT_WIELDED, REF(src))
RegisterSignal(user, COMSIG_MOB_SWAPPING_HANDS, PROC_REF(on_swapping_hands))
wield_callback?.Invoke(parent, user)
// update item stats and name
var/obj/item/parent_item = parent
if(force_multiplier)
parent_item.force *= force_multiplier
else if(force_wielded)
parent_item.force = force_wielded
if(sharpened_increase)
parent_item.force += sharpened_increase
parent_item.name = "[parent_item.name] (Wielded)"
parent_item.update_appearance()
if(iscyborg(user))
to_chat(user, span_notice("You dedicate your module to [parent]."))
else
to_chat(user, span_notice("You grab [parent] with both hands."))
// Play sound if one is set
if(wieldsound)
playsound(parent_item.loc, wieldsound, 50, TRUE)
// Let's reserve the other hand
offhand_item = new(user)
offhand_item.name = "[parent_item.name] - offhand"
offhand_item.desc = "Your second grip on [parent_item]."
offhand_item.wielded = TRUE
RegisterSignal(offhand_item, COMSIG_ITEM_DROPPED, PROC_REF(on_drop))
RegisterSignal(offhand_item, COMSIG_QDELETING, PROC_REF(on_destroy))
user.put_in_inactive_hand(offhand_item)
/**
* Unwield the two handed item
*
* vars:
* * user The mob/living/carbon that is unwielding the item
* * show_message (option) show a message to chat on unwield
* * can_drop (option) whether 'dropItemToGround' can be called or not.
*/
/datum/component/two_handed/proc/unwield(mob/living/carbon/user, show_message=TRUE, can_drop=TRUE)
if(!wielded)
return
// wield update status
wielded = FALSE
UnregisterSignal(user, COMSIG_MOB_SWAPPING_HANDS)
SEND_SIGNAL(parent, COMSIG_TWOHANDED_UNWIELD, user)
REMOVE_TRAIT(parent, TRAIT_WIELDED, REF(src))
unwield_callback?.Invoke(parent, user)
// update item stats
var/obj/item/parent_item = parent
if(sharpened_increase)
parent_item.force -= sharpened_increase
if(force_multiplier)
parent_item.force /= force_multiplier
else if(force_unwielded)
parent_item.force = force_unwielded
// update the items name to remove the wielded status
var/sf = findtext(parent_item.name, " (Wielded)", -10) // 10 == length(" (Wielded)")
if(sf)
parent_item.name = copytext(parent_item.name, 1, sf)
else
parent_item.name = "[initial(parent_item.name)]"
// Update icons
parent_item.update_appearance()
if(istype(user)) // tk showed that we might not have a mob here
if(user.get_item_by_slot(ITEM_SLOT_BACK) == parent)
user.update_worn_back()
else
user.update_held_items()
// if the item requires two handed drop the item on unwield
if(require_twohands && can_drop)
user.dropItemToGround(parent, force=TRUE)
// Show message if requested
if(show_message)
if(iscyborg(user))
to_chat(user, span_notice("You free up your module."))
else if(require_twohands)
to_chat(user, span_notice("You drop [parent]."))
else
to_chat(user, span_notice("You are now carrying [parent] with one hand."))
// Play sound if set
if(unwieldsound)
playsound(parent_item.loc, unwieldsound, 50, TRUE)
// Remove the object in the offhand
if(offhand_item)
UnregisterSignal(offhand_item, list(COMSIG_ITEM_DROPPED, COMSIG_QDELETING))
qdel(offhand_item)
// Clear any old refrence to an item that should be gone now
offhand_item = null
/**
* on_attack triggers on attack with the parent item
*/
/datum/component/two_handed/proc/on_attack(obj/item/source, mob/living/target, mob/living/user)
SIGNAL_HANDLER
if(wielded && attacksound)
var/obj/item/parent_item = parent
playsound(parent_item.loc, attacksound, 50, TRUE)
/**
* on_update_icon triggers on call to update parent items icon
*
* Updates the icon using icon_wielded if set
*/
/datum/component/two_handed/proc/on_update_icon(obj/item/source)
SIGNAL_HANDLER
if(!wielded)
return NONE
if(!icon_wielded)
return NONE
source.icon_state = icon_wielded
return COMSIG_ATOM_NO_UPDATE_ICON_STATE
/**
* on_moved Triggers on item moved
*/
/datum/component/two_handed/proc/on_moved(datum/source, mob/user, dir)
SIGNAL_HANDLER
unwield(user, can_drop=FALSE)
/**
* on_swap_hands Triggers on swapping hands, blocks swap if the other hand is busy
*/
/datum/component/two_handed/proc/on_swapping_hands(mob/user, obj/item/held_item)
SIGNAL_HANDLER
if(!held_item)
return
if(held_item == parent)
return COMPONENT_BLOCK_SWAP
/**
* on_sharpen Triggers on usage of a sharpening stone on the item
*/
/datum/component/two_handed/proc/on_sharpen(obj/item/item, amount, max_amount)
SIGNAL_HANDLER
if(!item)
return COMPONENT_BLOCK_SHARPEN_BLOCKED
if(sharpened_increase)
return COMPONENT_BLOCK_SHARPEN_ALREADY
var/wielded_val = 0
if(force_multiplier)
var/obj/item/parent_item = parent
if(wielded)
wielded_val = parent_item.force
else
wielded_val = parent_item.force * force_multiplier
else
wielded_val = force_wielded
if(wielded_val > max_amount)
return COMPONENT_BLOCK_SHARPEN_MAXED
sharpened_increase = min(amount, (max_amount - wielded_val))
return COMPONENT_BLOCK_SHARPEN_APPLIED
/**
* The offhand dummy item for two handed items
*
*/
/obj/item/offhand
name = "offhand"
icon = 'icons/obj/weapons/hand.dmi'
icon_state = "offhand"
w_class = WEIGHT_CLASS_HUGE
item_flags = ABSTRACT
resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
var/wielded = FALSE // Off Hand tracking of wielded status
/obj/item/offhand/Initialize(mapload)
. = ..()
ADD_TRAIT(src, TRAIT_NODROP, ABSTRACT_ITEM_TRAIT)
/obj/item/offhand/Destroy()
wielded = FALSE
return ..()
/obj/item/offhand/equipped(mob/user, slot)
. = ..()
if(wielded && !user.is_holding(src) && !QDELETED(src))
qdel(src)