Adds updated version of power debugging items

- Infinite powersource, Infinite grid load (powersink without boom) and APC dummy load.
- Not buildable, intended primarily for debugging or admin shenanigans. For mapped-in variants setting show_extended_information = FALSE is recommended.

code/modules/power/debug_items.dm

@@ -0,0 +1,65 @@
+/obj/machinery/power/debug_items/
+	icon = 'icons/obj/power.dmi'
+	icon_state = "tracker"
+	anchored = 1
+	density = 1
+	var/show_extended_information = 1	// Set to 0 to disable extra information on examining (for example, when used on admin events)
+
+/obj/machinery/power/debug_items/examine(mob/user)
+	. = ..()
+	if(show_extended_information)
+		show_info(user)
+
+/obj/machinery/power/debug_items/proc/show_info(var/mob/user)
+	if(!powernet)
+		to_chat(user, "This device is not connected to a powernet")
+		return
+
+	to_chat(user, "Connected to powernet: [powernet]")
+	to_chat(user, "Available power: [num2text(powernet.avail, 20)] W")
+	to_chat(user, "Load: [num2text(powernet.viewload, 20)] W")
+	to_chat(user, "Has alert: [powernet.problem ? "YES" : "NO"]")
+	to_chat(user, "Cables: [powernet.cables.len]")
+	to_chat(user, "Nodes: [powernet.nodes.len]")
+
+
+// An infinite power generator. Adds energy to connected cable.
+/obj/machinery/power/debug_items/infinite_generator
+	name = "Fractal Energy Reactor"
+	desc = "An experimental power generator capable of generating massive amounts of energy from subspace vacuum."
+	var/power_generation_rate = 1000000
+
+/obj/machinery/power/debug_items/infinite_generator/process()
+	add_avail(power_generation_rate)
+
+/obj/machinery/power/debug_items/infinite_generator/show_info(var/mob/user)
+	..()
+	to_chat(user, "Generator is providing [num2text(power_generation_rate, 20)] W")
+
+
+// A cable powersink, without the explosion/network alarms normal powersink causes.
+/obj/machinery/power/debug_items/infinite_cable_powersink
+	name = "Null Point Core"
+	desc = "An experimental device that disperses energy, used for grid stress-testing purposes."
+	var/power_usage_rate = 0
+	var/last_used = 0
+
+/obj/machinery/power/debug_items/infinite_cable_powersink/process()
+	last_used = draw_power(power_usage_rate)
+
+/obj/machinery/power/debug_items/infinite_cable_powersink/show_info(var/mob/user)
+	..()
+	to_chat(user, "Power sink is demanding [num2text(power_usage_rate, 20)] W")
+	to_chat(user, "[num2text(last_used, 20)] W was actually used last tick")
+
+
+/obj/machinery/power/debug_items/infinite_apc_powersink
+	name = "APC Dummy Load"
+	desc = "A dummy load that connects to an APC, used for load testing purposes."
+	use_power = USE_POWER_ACTIVE
+	active_power_usage = 0
+
+/obj/machinery/power/debug_items/infinite_apc_powersink/show_info(var/mob/user)
+	..()
+	to_chat(user, "Dummy load is using [num2text(active_power_usage, 20)] W")
+	to_chat(user, "Powered: [powered() ? "YES" : "NO"]")