guards use highbred City._playerMemory.size() and Mob.playerAgroMap to go to sleep

src/engine/objects/City.java

@@ -87,7 +87,7 @@ public class City extends AbstractWorldObject {
 
 	// Players who have entered the city (used for adding and removing affects)
 
-	private final HashSet<Integer> _playerMemory = new HashSet<>();
+	public final HashSet<Integer> _playerMemory = new HashSet<>();
 
 	public volatile boolean protectionEnforced = true;
 	private String hash;

src/engine/objects/Mob.java

@@ -99,6 +99,7 @@ public class Mob extends AbstractIntelligenceAgent {
     private DeferredPowerJob weaponPower;
     private DateTime upgradeDateTime = null;
     private boolean lootSync = false;
+    public City guardedCity;
 
     /**
      * No Id Constructor
@@ -806,6 +807,7 @@ public class Mob extends AbstractIntelligenceAgent {
         mob.npcOwner = guardCaptain;
         mob.spawnTime = (int)(-2.500 * guardCaptain.building.getRank() + 22.5) * 60;
         mob.BehaviourType = Enum.MobBehaviourType.GuardMinion;
+        mob.guardedCity = guardCaptain.guardedCity;
         mob.parentZone = parent;
         parent.zoneMobSet.add(mob);
         return mob;