code/modules/speech/say_channels/listener_tick_cache/_listener_tick_cache_parent.dm 
| /datum/listener_tick_cache | Listener tick caches are responsible for storing the "listeners by type" lists calculated by PassToChannel() for a single tick.
This allows all other hearing operations occuring on the same tick from the same origin to quickly retrieve the relevant listeners;
this is why speaking into over ten radios at once doesn't grind the game to a halt. |
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