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code/controllers/subsystem/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 ..()