Parameterizes the view distance used to compute and manage

child agents in neighbor regions. This means you can extend
the view on a simulator beyond the default 3x3 regions.

This uses a region default draw distance and should be
replaced at some point by the avatar specified draw distance.
That will require more careful, dynamic recomputation of child
agents every time the draw distance changes.

WARNING: this is experimental and has known instabilities. specifically
all regions "within site" should be running the same default draw distance
or agents will not be closed correctly.

bin/OpenSimDefaults.ini

@@ -94,6 +94,13 @@
     ; Warning!  Don't use this with regions that have existing content!, This will likely break them
     CombineContiguousRegions = false
 
+    ; Extend the region's draw distance; 255m is the default which includes
+    ; one neighbor on each side of the current region, 767m would go three
+    ; neighbors on each side for a total of 49 regions in view. Warning, unless
+    ; all the regions have the same drawdistance, you will end up with strange
+    ; effects because the agents that get closed may be inconsistent.
+    ; DefaultDrawDistance = 255.0
+
     ; If you have only one region in an instance, or to avoid the many bugs
     ; that you can trigger in modules by restarting a region, set this to
     ; true to make the entire instance exit instead of restarting the region.