Reduced Upstream/Downstream Load (#1052)

* an attempt to space out the player upstream

* some data sterilizing

* when a player is respawning, other players do not send their own update PSM's

* always display players in their proper locations when nearing their view, even if they have been stationary this whole time

* fixing configuration file and warnings

src/main/resources/application.conf

@@ -183,6 +183,41 @@ game {
     }
   }
 
+  # Limits the dispatch of PlayerStateMessage packets from a session to its client.
+  # Specifically, a packet will only be dispatched based on whether
+  # it is to be dispatched over a threshold time after the previous dispatch time.
+  # The delay between packets is determined by a distance between the observer player and the target player.
+  # Only affects PlayerStateMessage.
+  player-draw = {
+    # Minimum number of players within a given region before scaling down the range.
+    # Total population - population threshold = overpopulation
+    population-threshold = 20
+    # Number of players over threshold before the reduction in range is scaled down.
+    # Population step / overpopulation = range step factor (integer)
+    population-step = 5
+    # Always send packets regarding target players within the given distance.
+    range-min = 50
+    # Do not send packets regarding target players beyond this distance. (sq.m)
+    # Treat this as an absolute render distance.
+    range-max = 550
+    # Number of meters reduced from range based on population count over threshold value. (m)
+    # Range step * range step factor = total distance to remove from actual distance
+    range-step = 25
+    # The distances above min-range where different delays are allowed before a successful packet must be dispatched. [m]
+    # Test distances against entries to find the last one that is not more than the sample distance.
+    # Use the index of that sample distance from this sequence in the sequence `delays` below.
+    ranges = [150, 300, 400]
+    # The absolute time delay before a successful packet must be dispatched regardless of distance. (s)
+    delay-max = 1000
+    # The time delays for each distance range before a successful packet must be dispatched. [s]
+    # The index for an entry in this sequence is expected to be discovered using the `ranges` sequence above.
+    # Delays between packets may not be as precise as desired
+    # as the heartbeat of upstream packets are measured in quanta of 250ms usually.
+    # As a consequence, additional entries with proper time spacing will push back the next proper update considerably
+    # while additional entries with insufficient time spacing may result in no change in behavior.
+    delays = [350, 600, 800]
+  }
+  
   doors-can-be-opened-by-med-app-from-this-distance = 5.05
 }