Yet Another Circuit Update (#5549)

* Circuit updates, adds new components, improves printer, new assemblies.

* Finishes powernet circuit.

* Adds wearable assemblies.

* Finialization before merging with GLOB port.

* Finishes circuit update, hopefully.

* Forgot to undo map.

* Removes debug output.

code/modules/power/cell.dm

@@ -106,6 +106,10 @@
 /obj/item/weapon/cell/proc/check_charge(var/amount)
 	return (charge >= amount)
 
+// Returns how much charge is missing from the cell, useful to make sure not overdraw from the grid when recharging.
+/obj/item/weapon/cell/proc/amount_missing()
+	return max(maxcharge - charge, 0)
+
 // use power from a cell, returns the amount actually used
 /obj/item/weapon/cell/proc/use(var/amount)
 	if(rigged && amount > 0)

code/modules/power/power.dm

@@ -55,6 +55,12 @@
 	else
 		return 0
 
+/obj/machinery/power/proc/viewload()
+	if(powernet)
+		return powernet.viewload
+	else
+		return 0
+
 /obj/machinery/power/proc/disconnect_terminal() // machines without a terminal will just return, no harm no fowl.
 	return