Added the preference option + smoll fix

code/modules/client/preference/preferences.dm

@@ -93,6 +93,7 @@ var/global/list/special_role_times = list( //minimum age (in days) for accounts
 	var/clientfps = 0
 	var/atklog = ATKLOG_ALL
 	var/fuid							// forum userid
+	var/afk_watch = FALSE  				// If the player wants to be kept track of by the AFK system
 
 	//ghostly preferences
 	var/ghost_anonsay = 0
@@ -439,6 +440,7 @@ var/global/list/special_role_times = list( //minimum age (in days) for accounts
 			dat += "<h2>General Settings</h2>"
 			if(user.client.holder)
 				dat += "<b>Adminhelp sound:</b> <a href='?_src_=prefs;preference=hear_adminhelps'><b>[(sound & SOUND_ADMINHELP)?"On":"Off"]</b></a><br>"
+			dat += "<b>AFK Cryoing:</b> <a href='?_src_=prefs;preference=afk_watch'>[(afk_watch) ? "Yes" : "No"]</a><br>"
 			dat += "<b>Ambient Occlusion:</b> <a href='?_src_=prefs;preference=ambientocclusion'><b>[toggles & AMBIENT_OCCLUSION ? "Enabled" : "Disabled"]</b></a><br>"
 			dat += "<b>Attack Animations:</b> <a href='?_src_=prefs;preference=ghost_att_anim'>[(show_ghostitem_attack) ? "Yes" : "No"]</a><br>"
 			if(unlock_content)
@@ -1976,6 +1978,9 @@ var/global/list/special_role_times = list( //minimum age (in days) for accounts
 				if("winflash")
 					windowflashing = !windowflashing
 
+				if("afk_watch")
+					afk_watch = !afk_watch
+
 				if("UIcolor")
 					var/UI_style_color_new = input(user, "Choose your UI color, dark colors are not recommended!", UI_style_color) as color|null
 					if(!UI_style_color_new) return

code/modules/client/preference/preferences_mysql.dm

@@ -19,7 +19,8 @@
 					exp,
 					clientfps,
 					atklog,
-					fuid
+					fuid,
+					afk_watch
 					FROM [format_table_name("player")]
 					WHERE ckey='[C.ckey]'"}
 					)
@@ -52,6 +53,7 @@
 		clientfps = text2num(query.item[17])
 		atklog = text2num(query.item[18])
 		fuid = text2num(query.item[19])
+		afk_watch = text2num(query.item[20])
 
 	//Sanitize
 	ooccolor		= sanitize_hexcolor(ooccolor, initial(ooccolor))
@@ -72,6 +74,7 @@
 	clientfps = sanitize_integer(clientfps, 0, 1000, initial(clientfps))
 	atklog = sanitize_integer(atklog, 0, 100, initial(atklog))
 	fuid = sanitize_integer(fuid, 0, 10000000, initial(fuid))
+	afk_watch = sanitize_integer(afk_watch, 0, 1, initial(afk_watch))
 	return 1
 
 /datum/preferences/proc/save_preferences(client/C)
@@ -101,7 +104,8 @@
 					windowflashing='[windowflashing]',
 					ghost_anonsay='[ghost_anonsay]',
 					clientfps='[clientfps]',
-					atklog='[atklog]'
+					atklog='[atklog]',
+					afk_watch='[afk_watch]'
 					WHERE ckey='[C.ckey]'"}
 					)