Enemy is taking damage but player is still not....for some reason

This will be used for determining when to use various special attacks throughout the decision tree. This is simply a template and values can be changed.

Also added a placeholder for a poison special attack, to be implemented.

Please keep Left is true and Right is false
Started to add player health

DECISIONS TREE CLASS:
- Made lots of members private to remove Unity warnings
- Removed parameters we didn't need from a few functions

ENEMYAI:
- Few structural changes, BuildDecisionTree seems to work in start() now
- Now denoting actions with "a_ACTIONNAME" and decision with
  "d_DECISIONNAME".  Easier to read!

enemy blocks and attacks

So Smart