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b4fd13b16b
* Improve the naming of the element argument hash index selector (#71319) So confusing name * Improve the naming of the element argument hash index selector * sr sync Co-authored-by: oranges <email@oranges.net.nz> Co-authored-by: tastyfish <crazychris32@gmail.com>
35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
/**
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* # Trait Loc Element
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*
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* Adds a trait to the movable's loc, and handles relocating the trait if the movable itself moves.
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*/
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/datum/element/trait_loc
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element_flags = ELEMENT_BESPOKE|ELEMENT_DETACH_ON_HOST_DESTROY // handles if our movable is deleted
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argument_hash_start_idx = 2
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/// What trait to apply to the movable's loc.
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var/trait_to_give
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/datum/element/trait_loc/Attach(atom/movable/target, trait_to_give)
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. = ..()
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if(!ismovable(target))
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return ELEMENT_INCOMPATIBLE
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src.trait_to_give = trait_to_give
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RegisterSignal(target, COMSIG_MOVABLE_MOVED, PROC_REF(on_movable_relocated))
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if(target.loc)
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ADD_TRAIT(target.loc, trait_to_give, REF(target))
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/datum/element/trait_loc/Detach(atom/movable/source, ...)
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. = ..()
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UnregisterSignal(source, COMSIG_MOVABLE_MOVED)
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if(source.loc)
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REMOVE_TRAIT(source.loc, trait_to_give, REF(source))
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/datum/element/trait_loc/proc/on_movable_relocated(atom/movable/source, atom/old_loc)
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SIGNAL_HANDLER
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REMOVE_TRAIT(old_loc, trait_to_give, REF(source))
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if(source.loc)
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ADD_TRAIT(source.loc, trait_to_give, REF(source))
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