I initially added this because, despite the higher tickrate for
composite condition calculations thanks to the last commit, there is
still a slight status icon delay when rapidly switching nanos. I
attempted to use this to make that problem go away and for whatever
reason it wasn't effective, but I figure it would be useful to have
anyway so I'm keeping it.
The first implementation was way too complicated and prone to bugs.
This is much more simple flexible; first off, std::function is now used
instead of a raw function pointer, so lambdas and binds are fair game
which is great for scripting. Second, callbacks for all stacks are
executed. It is up to the callback target to ensure correct behavior.
Get rid of `iConditionBitFlag` in favor of a system of individual buff
objects that get composited to a bitflag on-the-fly.
Buff objects can have callbacks for application, expiration, and tick,
making them pretty flexible. Scripting languages can eventually use
these for custom behavior, too.
TODO:
- Get rid of bitflag in BaseNPC
- Apply buffs from passive nano powers
- Apply buffs from active nano powers
- Move eggs to new system
- ???