Area tweaks (#20391)

Reworked area changes and power define channels

No player visible changes (hopefully)

code/modules/overmap/exoplanets/decor/_turfs.dm

@@ -31,7 +31,7 @@
 			//Must be done here, as light data is not fully carried over by ChangeTurf (but overlays are).
 			set_light(MINIMUM_USEFUL_LIGHT_RANGE, exoplanet.lightlevel, exoplanet.lightcolor)
 			if(exoplanet.planetary_area && istype(loc, world.area))
-				ChangeArea(src, exoplanet.planetary_area)
+				change_area(loc, exoplanet.planetary_area)
 		// if away site
 		else if(istype(template, /datum/map_template/ruin/away_site))
 			var/datum/map_template/ruin/away_site/away_site = template
@@ -175,7 +175,7 @@
 	if(!istype(E))
 		return
 	if(E.planetary_area && istype(loc, world.area))
-		ChangeArea(src, E.planetary_area)
+		change_area(loc, E.planetary_area)
 	var/new_x = bumped_atom.x
 	var/new_y = bumped_atom.y
 	if(x <= TRANSITIONEDGE)

code/modules/overmap/exoplanets/themes/_theme.dm

@@ -331,7 +331,7 @@
 
 /datum/exoplanet_theme/proc/on_turf_generation(turf/T, area/use_area)
 	if(use_area && istype(T.loc, world.area))
-		ChangeArea(T, use_area) // Switch our generated turfs from world.area (space) to our chosen exoplanet area
+		T.change_area(T.loc, use_area) // Switch our generated turfs from world.area (space) to our chosen exoplanet area
 
 	if(surface_color && is_type_in_list(T, surface_turfs))
 		T.color = surface_color

code/modules/overmap/sectors.dm

@@ -300,7 +300,7 @@ var/global/area/overmap/map_overmap
 			T = T.ChangeTurf(/turf/unsimulated/map/edge)
 		else
 			T = T.ChangeTurf(/turf/unsimulated/map)
-		ChangeArea(T, A)
+		T.change_area(T.loc, A)
 
 	SSatlas.current_map.sealed_levels |= SSatlas.current_map.overmap_z
 

code/modules/overmap/ships/engines/gas_thruster.dm

@@ -63,7 +63,7 @@
 	connect_types = CONNECT_TYPE_REGULAR|CONNECT_TYPE_FUEL
 
 	use_power = POWER_USE_OFF
-	power_channel = EQUIP
+	power_channel = AREA_USAGE_EQUIP
 	idle_power_usage = 21600 //6 Wh per tick for default 2 capacitor. Gives them a reason to turn it off, really to nerf backup battery
 
 	component_types = list(

code/modules/overmap/ships/engines/ion_thruster.dm

@@ -40,7 +40,7 @@
 	desc = "An advanced ion propulsion device, using energy and a minute amount of gas to generate thrust."
 	icon = 'icons/obj/ship_engine.dmi'
 	icon_state = "nozzle"
-	power_channel = ENVIRON
+	power_channel = AREA_USAGE_ENVIRON
 	idle_power_usage = 19600
 	anchored = TRUE
 	component_types = list(