better alert levels, more computer functionality, less cheese, powergrids, etc

- Adds 'toggle falsewall' functionality to door control computer TESTED
- Adds teleport control computer with 'toggle beacon' functionality
TESTED
- Converts structure/fusionreactor to use obj_integrity by request of
uraniummeltdown TESTED
- Makes bluespace_beacon a permanent map feature (can be turned on/off
with agent ID) rather than a random spawn TESTED
- Deletes all other invulnerable structures (e.g comms structures) from
the map TESTED
- Makes depot use BLUE/RED/DELTA alert level system with appropriate
lighting TESTED
- Refactors raise_alert so it always says WHY the alert was raised
TESTED
- Gives syndicate officers unique names TESTED
- Adds area powergrids - main grid can be turned off to allow easy
crowbarring of doors, external lights/etc are on different network from
internal grid TESTED
- Adds powergrid alarm - syndie commms computer losing power increases
alert level TESTED
- Sentry bot now raises alert level if destroyed, or cheesed TESTED
- Overloaded fusion reactor now emits massive AoE fire effect to scare
the pants off players TESTED
- Syndie computer consoles now use varied icons, instead of all the same
icons TESTED
- Depot now contains many contraband posters TESTED
- Added more turrets and mobs to the SE area TESTED

code/game/objects/structures/depot.dm

@@ -0,0 +1,92 @@
+
+/obj/structure/fusionreactor
+	name = "syndicate fusion reactor"
+	desc = ""
+	icon = 'icons/obj/device.dmi'
+	icon_state = "powersink1"
+	anchored = 1
+	max_integrity = 50
+	var/area/syndicate_depot/depotarea
+
+/obj/structure/fusionreactor/New()
+	..()
+	depotarea = areaMaster
+	if(depotarea)
+		depotarea.reactor = src
+
+/obj/structure/fusionreactor/ex_act(severity)
+	obj_integrity -= 10 * severity
+	healthcheck()
+
+/obj/structure/fusionreactor/bullet_act(var/obj/item/projectile/Proj)
+	obj_integrity -= Proj.damage
+	..()
+	healthcheck()
+
+/obj/structure/fusionreactor/proc/healthcheck()
+	if(obj_integrity <= 0)
+		overload(TRUE)
+
+/obj/structure/fusionreactor/attackby(obj/item/I, mob/user, params)
+	if(iswrench(I))
+		playsound(loc, I.usesound, 50, 1)
+		to_chat(user, "<span class='notice'>The [src] is too well secured to the floor.</span>")
+	else if(isscrewdriver(I))
+		to_chat(user, "<span class='notice'>You try to screwdriver open [src], but accidentally release some radiation!</span>")
+		if(prob(50))
+			empulse(src, 4, 10)
+		else
+			for(var/mob/living/M in range(10, loc))
+				M.apply_effect(rand(5, 25), IRRADIATE)
+	else
+		return ..(I, user, params)
+
+/obj/structure/fusionreactor/proc/overload(var/containment_failure)
+	var/obj/effect/overload/O = new /obj/effect/overload(get_turf(src))
+	if(containment_failure)
+		O.deliberate = TRUE
+		O.max_cycles = 7
+	qdel(src)
+
+/obj/effect/overload
+	icon = 'icons/obj/tesla_engine/energy_ball.dmi'
+	icon_state = "energy_ball"
+	pixel_x = -32
+	pixel_y = -32
+	anchored = 1
+	var/cycles = 0
+	var/beepsound = 'sound/items/timer.ogg'
+	var/deliberate = FALSE
+	var/max_cycles = 15
+	var/max_fire_range = 6
+	var/area/syndicate_depot/depotarea
+
+/obj/effect/overload/New()
+	..()
+	processing_objects.Add(src)
+	depotarea = areaMaster
+	if(depotarea)
+		if(!depotarea.used_self_destruct)
+			depotarea.used_self_destruct = TRUE // Silences all further alerts from this point onwards.
+			depotarea.updateicon()
+
+/obj/effect/overload/process()
+	if(cycles < max_cycles)
+		if(!deliberate)
+			playsound(loc, beepsound, 50, 0)
+		cycles++
+		var/fire_range = cycles
+		if(max_fire_range > 6)
+			max_fire_range = 6
+		var/turf/T = get_turf(src)
+		for(var/turf/simulated/turf in range(fire_range, T))
+			new /obj/effect/hotspot(turf)
+		return
+
+	if(depotarea)
+		depotarea.destroyed = TRUE
+		depotarea.updateicon()
+
+	explosion(get_turf(src), 25, 35, 45, 55, 1, 1, 60, 0, 0)
+	processing_objects.Remove(src)
+	qdel(src)