Pixel Projectiles

code/controllers/subsystems/processing/processing.dm

@@ -0,0 +1,35 @@
+//Used to process objects. Fires once every second.
+
+SUBSYSTEM_DEF(processing)
+	name = "Processing"
+	priority = FIRE_PRIORITY_PROCESS
+	flags = SS_BACKGROUND|SS_POST_FIRE_TIMING|SS_NO_INIT
+	wait = 10
+
+	var/stat_tag = "P" //Used for logging
+	var/list/processing = list()
+	var/list/currentrun = list()
+
+/datum/controller/subsystem/processing/stat_entry()
+	..("[stat_tag]:[processing.len]")
+
+/datum/controller/subsystem/processing/fire(resumed = 0)
+	if (!resumed)
+		currentrun = processing.Copy()
+	//cache for sanic speed (lists are references anyways)
+	var/list/current_run = currentrun
+
+	while(current_run.len)
+		var/datum/thing = current_run[current_run.len]
+		current_run.len--
+		if(QDELETED(thing))
+			processing -= thing
+		else if(thing.process(wait) == PROCESS_KILL)
+			// fully stop so that a future START_PROCESSING will work
+			STOP_PROCESSING(src, thing)
+		if (MC_TICK_CHECK)
+			return
+
+/datum/proc/process()
+	set waitfor = 0
+	return PROCESS_KILL

code/controllers/subsystems/processing/projectiles.dm

@@ -0,0 +1,23 @@
+PROCESSING_SUBSYSTEM_DEF(projectiles)
+	name = "Projectiles"
+	wait = 1
+	stat_tag = "PP"
+	flags = SS_NO_INIT|SS_TICKER
+	var/global_max_tick_moves = 10
+	var/global_pixel_speed = 2
+	var/global_iterations_per_move = 16
+
+/datum/controller/subsystem/processing/projectiles/proc/set_pixel_speed(new_speed)
+	global_pixel_speed = new_speed
+	for(var/i in processing)
+		var/obj/item/projectile/P = i
+		if(istype(P))			//there's non projectiles on this too.
+			P.set_pixel_speed(new_speed)
+
+/datum/controller/subsystem/processing/projectiles/vv_edit_var(var_name, var_value)
+	switch(var_name)
+		if(NAMEOF(src, global_pixel_speed))
+			set_pixel_speed(var_value)
+			return TRUE
+		else
+			return ..()