use rvo2 (Optimal Reciprocal Collision Avoidance) in unity.
https://github.com/snape/RVO2-CS
- add dynamic add/del agent in runtime.
- add ObstacleCollect to convert BoxCollider to RVO Obstacle
- add find near agent API queryNearAgent
- simple example for use in unity
- Unity 2017.1.2
- No other SDK are required.