Switch to simulation within a main action

[peter1591]

Do we need to switch to simulation mode within a main action?

For example,
A main action is to decide from (PLAY-CARD, HERO-POWER, END-TURN)

Assume we were in selection mode at this main action node, the UCB policy is used to determined from these choices.
Assume we choose the PLAY-CARD action
Assume this is the FIRST TIME we make this choice, so a new node is added to the game tree.

Now, do we want to switch to simulation mode?

In current design, we only switch to simulation mode after this MAIN ACTION + SUB ACTIONS are done.
That is, we switch to simulation after

1. added a node for PLAY-CARD
2. added a node for CHOOSE-HAND-CARD
3. added a node for CHOOSE-TARGET (if any)
4. more nodes for callback (if any)
   Now, after this main action is done, we switched to simulation mode.