This subdivision is faster but less precise, so range queries get more
entities and are a bit slower (up to 1ms approx.), but the overall gain
on a simulation update is always positive and can reach 10ms per frame.
For now, this new subdivision is only used by the range manager,
integrating it in the obstruction manager might be sensible.
Refs #2430
This was SVN commit r16540.
Implements build limits. See #687.
Implements autorotation for dock placement.
Fixes unit spawning to consider terrain passability. See #893.
Adds new passability criteria based on distance from shore.
Updates build restrictions on some templates.
Changes unit spawning search to 4 tiles away from foundation.
Changes garrison/training spawn failure to nicer UI notification.
This was SVN commit r9970.
Pass terrain passability data to AI scripts.
Expand pathfinder passability data to 16 bits per tile, to allow more
classes.
Support 16-bit ints in serializer.
Partially support JS typed arrays.
Allow foundations to be placed on top of units (fixes#499).
Stop farms and fishes blocking movement (fixes#534).
Add obstruction flags to allow finer control over what they block.
Associate entity IDs with obstruction shapes, to allow finding colliding
entities.
Support moving to the edge of a target entity with inactive obstruction.
Support foundation entities in AI.
Support playing as non-hele civs.
This was SVN commit r8899.
Support asynchronous path queries.
Allow escaping when stuck in impassable terrain tiles.
Split Update message in multiple phases, to cope with ordering
requirements.
Support automatic walk/run animation switching.
This was SVN commit r8058.
Add short-range vertex-based pathfinder.
Integrate new pathfinder into unit motion code.
Change obstruction system to get rid of circles, and differentiate
structures from units.
Make PositionChanged messages synchronous.
Try to prevent some accidental float->int conversions.
This was SVN commit r7484.
