APC Area update initial commit.

Conflicts:
	code/modules/mob/mob.dm
	code/modules/power/power.dm

code/modules/power/apc.dm

@@ -78,6 +78,7 @@
 	powernet = 0		// set so that APCs aren't found as powernet nodes //Hackish, Horrible, was like this before I changed it :(
 	var/malfhack = 0 //New var for my changes to AI malf. --NeoFite
 	var/mob/living/silicon/ai/malfai = null //See above --NeoFite
+	var/debug= 0
 //	luminosity = 1
 	var/has_electronics = 0 // 0 - none, 1 - plugged in, 2 - secured by screwdriver
 	var/overload = 1 //used for the Blackout malf module
@@ -1049,7 +1050,8 @@
 	lastused_light = area.usage(LIGHT)
 	lastused_equip = area.usage(EQUIP)
 	lastused_environ = area.usage(ENVIRON)
-	area.clear_usage()
+	if(area.powerupdate)
+		area.clear_usage()
 
 	lastused_total = lastused_light + lastused_equip + lastused_environ
 
@@ -1072,8 +1074,8 @@
 	if(terminal && terminal.powernet)
 		perapc = terminal.powernet.perapc
 
-	//if(debug)
-	//	world.log << "Status: [main_status] - Excess: [excess] - Last Equip: [lastused_equip] - Last Light: [lastused_light] - Longterm: [longtermpower]"
+	if(debug)
+		world << "Status: [main_status] - Excess: [excess] - Last Equip: [lastused_equip] - Last Light: [lastused_light]"
 
 	if(cell && !shorted)
 
@@ -1318,4 +1320,4 @@ obj/machinery/power/apc/proc/autoset(var/val, var/on)
 	else
 		return 0
 
-#undef APC_UPDATE_ICON_COOLDOWN
+#undef APC_UPDATE_ICON_COOLDOWN