Door closing modifications (#255)

* Increase the distance on the door close check to stop doors bouncing open/closed and add a check to make sure the player is alive when holding the door open

* Dead players hold doors open, zone is now checked if the player is a backpack instead of the player object itself

common/src/main/scala/services/local/support/DoorCloseActor.scala

@@ -38,8 +38,11 @@ class DoorCloseActor() extends Actor {
       val (doorsToClose2, doorsLeftOpen2) = doorsToClose1.partition(entry => {
         entry.door.Open match {
           case Some(player) =>
-            Vector3.MagnitudeSquared(entry.door.Position - player.Position) > 15
+            // If the player that opened the door is far enough away, or they're dead / backpacked, close the door
+            var playerIsBackpackInZone = entry.zone.Corpses.contains(player)
+            Vector3.MagnitudeSquared(entry.door.Position - player.Position) > 25.5 || playerIsBackpackInZone
           case None =>
+            // Door should not be open. Mark it to be closed.
             true
         }
       })