Fix All Exoplanet Atmosphere Lag (#22924)

Y'know, probably. It certainly seems to work locally!

changes:
- code_imp: "Exoplanets now cache their main outdoor atmospheric region
instead of trying to search their entire map once per second."
- code_imp: "Exoplanet atmospheric calculations now run only when
necessary using new update_revision counter."
- code_imp: "Exoplanet atmospheres now wait until all random ruins have
been placed before trying to resolve the air everywhere."
- admin: "Adds new admin debug verb, 'Toggle Non-Horizon Temperature
Graphics', which toggles all off-ship gas temp graphics to address lag
in a pinch, if still necessary, without removing actual environmental
hazard."

code/ZAS/Turf.dm

@@ -6,7 +6,13 @@
 
 /turf/simulated/proc/update_graphic(list/graphic_add = null, list/graphic_remove = null)
 	if(graphic_add && LAZYLEN(graphic_add))
-		add_vis_contents(graphic_add)
+		if(SSair.suppress_nonhorizon_temperature_graphics && !is_station_level(z))
+			for(var/obj/gas_overlay/graphic in graphic_add)
+				if(graphic.gas_id == GAS_HEAT || graphic.gas_id == GAS_COLD)
+					continue
+				add_vis_contents(graphic)
+		else
+			add_vis_contents(graphic_add)
 	if(graphic_remove && LAZYLEN(graphic_remove))
 		remove_vis_contents(graphic_remove)
 

code/ZAS/Zone.dm

@@ -8,6 +8,7 @@ Class Vars:
 	name - A name of the format "Zone [#]", used for debugging.
 	invalid - True if the zone has been erased and is no longer eligible for processing.
 	needs_update - True if the zone has been added to the update list.
+	update_revision - Incremented when needs_update flips on, and retained after needs_update is cleared.
 	edges - A list of edges that connect to this zone.
 	air - The gas mixture that any turfs in this zone will return. Values are per-tile with a group multiplier.
 
@@ -47,6 +48,8 @@ Class Procs:
 	var/list/fire_tiles
 
 	var/needs_update = 0
+	/// Counter incremented when zone is dirtied for processing.
+	var/update_revision = 0
 
 	var/list/connection_edge/edges
 
@@ -172,6 +175,7 @@ Class Procs:
 	to_chat(M, "P: [XGM_PRESSURE(air)] kPa V: [air.volume]L T: [air.temperature]�K ([air.temperature - T0C]�C)")
 	to_chat(M, "O2 per N2: [(air.gas[GAS_NITROGEN] ? air.gas[GAS_OXYGEN]/air.gas[GAS_NITROGEN] : "N/A")] Moles: [air.total_moles]")
 	to_chat(M, "Simulated: [contents.len] ([air.group_multiplier])")
+	to_chat(M, "Update Revision: [update_revision]")
 	//to_chat(M, "Unsimulated: [unsimulated_contents.len]")
 	//to_chat(M, "Edges: [LAZYLEN(edges)]")
 	if(invalid) to_chat(M, "Invalid!")