Random-access access to `List` when iterating is `O(n^2)` (`O(n)` when
accessing a single element)
* Removed subscript operator, in favor of a more explicit `get`
* Added conversion from `Iterator` to `ConstIterator`
* Remade existing operations into other solutions when applicable
* This should optimize GDScript function calling _enormously_.
* It also should simplify the GDScript VM considerably.
NOTE: GDExtension calling performance has most likely been affected until going via ptrcall is fixed.
Breaking compatibility: If a StateMachineTransition is connected to a nested StateMachine prior to this, it is removed. Also, there was a feature to connect another StateMachine as the End of a StateMachine, which is also removed to avoid reference confusion. It was like a GoTo Statement, also further passing the same reference to the blending process, causing the blending calculation to break or causing some StateMachines to not work.
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.
It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).
We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).
Also fixed "cf." Frenchism - it's meant as "refer to / see".
Expressions and conditions now require auto mode to be set to auto.
Adds a toggle button to the state machine editor for whether new transitions
advance settings should default to auto mode or not.
Allows specifying an expression as a condition for state machine transitions.
This gives much greater flexibility for creating complex state machines. By directly interfacing with the script code, it is possible to create complex animation advance condition for switching between states.
Ensure assigning AnimationTreeStateMachineTransition base expression node in editor is relative to current AnimationTree node.
Allow setting an expression base node on the AnimationTree itself.
Co-Authored-By: reduz <reduzio@gmail.com>