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Bubberstation/code/modules/lighting/lighting_setup.dm
Kyle Spier-Swenson 8703eac50d split area.contained_turfs up by zlevel, make init 10 seconds faster (#80941)
## About The Pull Request

Situation: areas have a list of all turfs in their area.

Problem: `/area/space` is an area and has a 6 to 7 digit count of turfs
that has to be traversed for every turf we need to remove from it. This
can take multiple byond ticks just to preform this action for a single
space rune

Solution: split the list by zlevel, and only search the right zlevel
list when removing turfs from areas.

replaces `area.get_contained_turfs()` with a few new procs:

* `get_highest_zlevel()` - returns the highest zlevel the area contains
turfs in. useful for use with `get_turfs_by_zlevel`
* `get_turfs_by_zlevel(zlevel)` - returns a list of turfs in the area in
a given zlevel. Useful for code that only cares about a specific zlevel
or changes behavior based on zlevel like lighting init.
* `get_turfs_from_all_zlevels()` - the replacement for
`get_contained_turfs()`, renamed as such so anybody copying/cargo
culting code gets a hint that a zlevel specific version might exist.
Still used in for loops that type checked so byond would do that all at
once
* `get_zlevel_turf_lists()` - returns the area's zlevel lists of lists
but only for non-empty zlevels. very useful for for loops.

The area contents unit test has been rewritten to ensure any improper
data triggers failures or runtimes by not having it use the helpers
above (some of which ensure a list is always returned) and access the
lists directly.
2024-01-18 12:16:12 -05:00

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/proc/create_all_lighting_objects()
for(var/area/area as anything in GLOB.areas)
if(!area.static_lighting)
continue
for (var/list/zlevel_turfs as anything in area.get_zlevel_turf_lists())
for(var/turf/area_turf as anything in zlevel_turfs)
if(area_turf.space_lit)
continue
new /datum/lighting_object(area_turf)
CHECK_TICK
CHECK_TICK