[Planning]planning module change scenario use finite state machine？

[freeclouds]

OS Platform and Distribution 16.04 Apollo version 3.5 About module :planning Dear apollo developer,

• i have a question,in apollo 3.5 we can find that planning consist of some scenario ,such as lane follow, overtaking,sidepass....., when we need to change scenario,such as from lane follow to overtaking,we use some decision to judge when to change scenario, from the apollo readme.txt documents, i can find that apollo use finite state machine to manage planning module scenario change, about base on rules planning method, if have a Finite State Machine maybe the planning framework is very concise. but in the code i can't find some information, if someone know this question,tell me . thanks a lot.

[jmtao]

@freeclouds we manage scenario switches here: ScenarioManager::ScenarioDispatch()