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d85a02babd
* Refactors move procs to support multitle objects * Update _blob.dm Co-authored-by: Rohesie <rohesie@gmail.com> Co-authored-by: Gandalf <jzo123@hotmail.com>
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
/**
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* Attached to movable atoms with opacity. Listens to them move and updates their old and new turf loc's opacity accordingly.
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*/
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/datum/element/light_blocking
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element_flags = ELEMENT_DETACH
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/datum/element/light_blocking/Attach(datum/target)
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. = ..()
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if(!ismovable(target))
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return ELEMENT_INCOMPATIBLE
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RegisterSignal(target, COMSIG_MOVABLE_MOVED, .proc/on_target_move)
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var/atom/movable/movable_target = target
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if(!isturf(movable_target.loc))
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return
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for(var/turf/turf_loc as anything in movable_target.locs)
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turf_loc.add_opacity_source(target)
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/datum/element/light_blocking/Detach(datum/target)
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. = ..()
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UnregisterSignal(target, list(COMSIG_MOVABLE_MOVED))
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var/atom/movable/movable_target = target
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if(!isturf(movable_target.loc))
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return
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for(var/turf/turf_loc as anything in movable_target.locs)
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turf_loc.remove_opacity_source(target)
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///Updates old and new turf loc opacities.
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/datum/element/light_blocking/proc/on_target_move(atom/movable/source, atom/old_loc, dir, forced, list/old_locs)
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SIGNAL_HANDLER
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if(isturf(old_loc))
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if(old_locs)
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for(var/turf/old_turf as anything in old_locs)
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old_turf.remove_opacity_source(source)
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else
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var/turf/old_turf = old_loc
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old_turf.remove_opacity_source(source)
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if(isturf(source.loc))
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for(var/turf/new_turf as anything in source.locs)
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new_turf.add_opacity_source(source)
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