[MIRROR] Adds a power consumption multiplier to help downstreams change their consumption easily [MDB IGNORE] (#13155)

* Adds a power consumption multiplier to help downstreams change their consumption easily  (#66476)

* Adds a power consumption multiplier to help downstreams change their consumption easily

Co-authored-by: Ghilker <42839747+Ghilker@users.noreply.github.com>

code/__DEFINES/machines.dm

@@ -27,7 +27,9 @@
 #define IDLE_POWER_USE 1
 #define ACTIVE_POWER_USE 2
 
+///Base global power consumption for idling machines
 #define BASE_MACHINE_IDLE_CONSUMPTION 100
+///Base global power consumption for active machines
 #define BASE_MACHINE_ACTIVE_CONSUMPTION (BASE_MACHINE_IDLE_CONSUMPTION * 10)
 
 /// Bitflags for a machine's preferences on when it should start processing. For use with machinery's `processing_flags` var.

code/game/machinery/_machinery.dm

@@ -143,6 +143,8 @@
 	var/last_used_time = 0
 	/// Mobtype of last user. Typecast to [/mob/living] for initial() usage
 	var/mob/living/last_user_mobtype
+	///Multiplier for power consumption.
+	var/machine_power_rectifier = 1
 
 /obj/machinery/Initialize(mapload)
 	if(!armor)

code/modules/power/power.dm

@@ -93,6 +93,7 @@
 
 // increment the power usage stats for an area
 /obj/machinery/proc/use_power(amount, chan = power_channel)
+	amount = max(amount * machine_power_rectifier, 0) // make sure we don't use negative power
 	var/area/A = get_area(src) // make sure it's in an area
 	A?.use_power(amount, chan)