38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
/datum/element/spellcasting //allows to cast certain spells or skip requirements.
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element_flags = ELEMENT_BESPOKE|ELEMENT_DETACH
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id_arg_index = 2
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var/cast_flags
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var/cast_slots
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var/list/users_by_item = list()
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/datum/element/spellcasting/Attach(datum/target, _flags, _slots)
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. = ..()
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if(isitem(target))
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RegisterSignal(target, COMSIG_ITEM_EQUIPPED, .proc/on_equip)
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RegisterSignal(target, COMSIG_ITEM_DROPPED, .proc/on_drop)
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else if(ismob(target))
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RegisterSignal(target, COMSIG_MOB_SPELL_CAST_CHECK, .proc/on_cast)
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else
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return ELEMENT_INCOMPATIBLE
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cast_flags = _flags
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cast_slots = _slots
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/datum/element/spellcasting/Detach(datum/target)
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. = ..()
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UnregisterSignal(target, list(COMSIG_ITEM_EQUIPPED, COMSIG_ITEM_DROPPED, COMSIG_MOB_SPELL_CAST_CHECK))
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if(users_by_item[target])
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var/mob/user = users_by_item[target]
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UnregisterSignal(user, COMSIG_MOB_SPELL_CAST_CHECK)
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/datum/element/spellcasting/proc/on_equip(datum/source, mob/equipper, slot)
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if(slot in cast_slots)
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RegisterSignal(equipper, COMSIG_MOB_SPELL_CAST_CHECK, .proc/on_cast)
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users_by_item[source] = equipper
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/datum/element/spellcasting/proc/on_drop(datum/source, mob/user)
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UnregisterSignal(user, COMSIG_MOB_SPELL_CAST_CHECK)
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users_by_item -= source
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/datum/element/spellcasting/proc/on_cast(mob/caster, obj/effect/proc_holder/spell)
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return cast_flags
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