From 39bfcd8deb6ff8c15497fbd4a445858c48ba8c0e Mon Sep 17 00:00:00 2001
From: kevinz000 <2003111+kevinz000@users.noreply.github.com>
Date: Sun, 14 Oct 2018 13:34:11 -0700
Subject: [PATCH] Stuff

---
 code/controllers/subsystems/time_track.dm | 37 +++++++++++++++++++++++
 code/modules/mob/mob.dm                   | 10 +++---
 polaris.dme                               |  1 +
 3 files changed, 44 insertions(+), 4 deletions(-)
 create mode 100644 code/controllers/subsystems/time_track.dm

diff --git a/code/controllers/subsystems/time_track.dm b/code/controllers/subsystems/time_track.dm
new file mode 100644
index 0000000000..aed175ed27
--- /dev/null
+++ b/code/controllers/subsystems/time_track.dm
@@ -0,0 +1,37 @@
+SUBSYSTEM_DEF(time_track)
+	name = "Time Tracking"
+	wait = 600
+	flags = SS_NO_INIT|SS_NO_TICK_CHECK
+	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
+
+	var/time_dilation_current = 0
+
+	var/time_dilation_avg_fast = 0
+	var/time_dilation_avg = 0
+	var/time_dilation_avg_slow = 0
+
+	var/first_run = TRUE
+
+	var/last_tick_realtime = 0
+	var/last_tick_byond_time = 0
+	var/last_tick_tickcount = 0
+
+/datum/controller/subsystem/time_track/fire()
+
+	var/current_realtime = REALTIMEOFDAY
+	var/current_byondtime = world.time
+	var/current_tickcount = world.time/world.tick_lag
+
+	if (!first_run)
+		var/tick_drift = max(0, (((current_realtime - last_tick_realtime) - (current_byondtime - last_tick_byond_time)) / world.tick_lag))
+
+		time_dilation_current = tick_drift / (current_tickcount - last_tick_tickcount) * 100
+
+		time_dilation_avg_fast = MC_AVERAGE_FAST(time_dilation_avg_fast, time_dilation_current)
+		time_dilation_avg = MC_AVERAGE(time_dilation_avg, time_dilation_avg_fast)
+		time_dilation_avg_slow = MC_AVERAGE_SLOW(time_dilation_avg_slow, time_dilation_avg)
+	else
+		first_run = FALSE
+	last_tick_realtime = current_realtime
+	last_tick_byond_time = current_byondtime
+	last_tick_tickcount = current_tickcount
diff --git a/code/modules/mob/mob.dm b/code/modules/mob/mob.dm
index 30e966173e..1153366161 100644
--- a/code/modules/mob/mob.dm
+++ b/code/modules/mob/mob.dm
@@ -664,10 +664,12 @@
 	. = (is_client_active(10 MINUTES))
 
 	if(.)
-		if(statpanel("Status") && ticker && ticker.current_state != GAME_STATE_PREGAME)
-			stat("Station Time", stationtime2text())
-			stat("Station Date", stationdate2text())
-			stat("Round Duration", roundduration2text())
+		if(statpanel("Status"))
+			stat(null, "Time Dilation: [round(SStime_track.time_dilation_current,1)]% AVG:([round(SStime_track.time_dilation_avg_fast,1)]%, [round(SStime_track.time_dilation_avg,1)]%, [round(SStime_track.time_dilation_avg_slow,1)]%)")
+			if(ticker && ticker.current_state != GAME_STATE_PREGAME)
+				stat("Station Time", stationtime2text())
+				stat("Station Date", stationdate2text())
+				stat("Round Duration", roundduration2text())
 
 		if(client.holder)
 			if(statpanel("Status"))
diff --git a/polaris.dme b/polaris.dme
index c23ba65c1b..622549e634 100644
--- a/polaris.dme
+++ b/polaris.dme
@@ -200,6 +200,7 @@
 #include "code\controllers\subsystems\overlays.dm"
 #include "code\controllers\subsystems\planets.dm"
 #include "code\controllers\subsystems\shuttles.dm"
+#include "code\controllers\subsystems\time_track.dm"
 #include "code\controllers\subsystems\timer.dm"
 #include "code\controllers\subsystems\xenoarch.dm"
 #include "code\controllers\subsystems\processing\processing.dm"