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modular_sand/code/controllers/subsystem/processing/quirks.dm

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+/datum/controller/subsystem/processing/quirks/AssignQuirks(mob/living/user, client/cli, spawn_effects, roundstart = FALSE, datum/job/job, silent = FALSE, mob/to_chat_target)
+	. = ..()
+	var/list/my_quirks = cli.prefs.all_quirks.Copy()
+	var/list/cut_because_balance = check_and_cut_balance(my_quirks)
+	if(LAZYLEN(cut_because_balance))
+		to_chat(to_chat_target || user, span_boldwarning("Some quirks have been cut from your character due to invalid balance: [english_list(cut_because_balance)]"))
+
+/// Code to automatically reduce positive quirks until balance is even.
+/datum/controller/subsystem/processing/quirks/proc/check_and_cut_balance(list/our_quirks)
+	var/list/cut = list()
+	var/points_used = total_points(our_quirks)
+
+	if(points_used > 0)
+		//they owe us points, let's collect.
+		for(var/i in our_quirks)
+			var/points = quirk_points_by_name(i)
+			if(points > 0)
+				cut += i
+				our_quirks -= i
+				points_used -= points
+			if(points_used <= 0)
+				break
+
+	return cut