Implements better powernet warning system (as suggested by mwerezak)

code/game/gamemodes/events/ninja_equipment.dm

@@ -957,7 +957,7 @@ ________________________________________________________________________________
 				var/datum/effect/effect/system/spark_spread/spark_system = new /datum/effect/effect/system/spark_spread()
 				spark_system.set_up(5, 0, A.loc)
 				while(G.candrain&&A.cell.charge>0&&!maxcapacity)
-					A.terminal.powernet.newproblem = 1
+					A.terminal.powernet.trigger_warning()
 					drain = rand(G.mindrain,G.maxdrain)
 					if(A.cell.charge<drain)
 						drain = A.cell.charge
@@ -1083,7 +1083,7 @@ ________________________________________________________________________________
 			var/obj/structure/cable/A = target
 			var/datum/powernet/PN = A.get_powernet()
 			while(G.candrain&&!maxcapacity&&!isnull(A))
-				PN.newproblem = 1
+				PN.trigger_warning()
 				drain = (round((rand(G.mindrain,G.maxdrain))/2))
 				var/drained = 0
 				if(PN&&do_after(U,10))

code/game/objects/items/devices/powersink.dm

@@ -95,7 +95,7 @@
 			var/datum/powernet/PN = attached.get_powernet()
 			if(PN)
 				SetLuminosity(12)
-				PN.newproblem = 1
+				PN.trigger_warning()
 				// found a powernet, so drain up to max power from it
 				var/drained = PN.draw_power(drain_rate)
 

code/modules/power/powernet.dm

@@ -13,8 +13,6 @@
 	var/netexcess = 0			// excess power on the powernet (typically avail-load)
 
 	var/problem = 0				// If either of these is set to 1 there is some sort of issue at the powernet.
-	var/newproblem = 0			// At time of implementation this may be: Powersink, Spess Ninja recharging
-
 
 /datum/powernet/New()
 	powernets += src
@@ -76,13 +74,18 @@
 	M.powernet = src
 	nodes[M] = M
 
+// Triggers warning for certain amount of ticks
+/datum/powernet/proc/trigger_warning(var/duration_ticks = 20)
+	problem = max(duration_ticks, problem)
+
+
 //handles the power changes in the powernet
 //called every ticks by the powernet controller
 /datum/powernet/proc/reset()
 	var/numapc = 0
 
-	problem = newproblem
-	newproblem = 0
+	if(problem > 0)
+		problem = max(problem - 1, 0)
 
 	if(nodes && nodes.len) // Added to fix a bad list bug -- TLE
 		for(var/obj/machinery/power/terminal/term in nodes)

code/modules/power/sensors/powernet_sensor.dm

@@ -78,7 +78,7 @@
 		else
 			textavail += " W"
 
-		if(powernet.problem || powernet.newproblem)
+		if(powernet.problem)
 			out += "<br><b>WARNING: Abnormal grid activity detected!</b>"
 		out += "<br><b>TOTAL GRID LOAD: [total_load]</b>"
 		out += "<br><b>TOTAL AVAILABLE: [textavail]</b>"