Rewrites a good amount of legality APIs pertaining to:
* Legal moves that can be learned
* Evolution chains & cross-generation paths
* Memory validation with forgotten moves
In generation 8, there are 3 separate contexts an entity can exist in: SW/SH, BD/SP, and LA. Not every entity can cross between them, and not every entity from generation 7 can exist in generation 8 (Gogoat, etc). By creating class models representing the restrictions to cross each boundary, we are able to better track and validate data.
The old implementation of validating moves was greedy: it would iterate for all generations and evolutions, and build a full list of every move that can be learned, storing it on the heap. Now, we check one game group at a time to see if the entity can learn a move that hasn't yet been validated. End result is an algorithm that requires 0 allocation, and a smaller/quicker search space.
The old implementation of storing move parses was inefficient; for each move that was parsed, a new object is created and adjusted depending on the parse. Now, move parse results are `struct` and store the move parse contiguously in memory. End result is faster parsing and 0 memory allocation.
* `PersonalTable` objects have been improved with new API methods to check if a species+form can exist in the game.
* `IEncounterTemplate` objects have been improved to indicate the `EntityContext` they originate in (similar to `Generation`).
* Some APIs have been extended to accept `Span<T>` instead of Array/IEnumerable
* Make EvolutionCriteria struct
8 bytes per object instead of 26
Unify LevelMin/LevelMax to match EncounterTemplate
bubble up precise array type for better iteration
* Inline queue operations, less allocation
* Inline some logic
* Update EvolutionChain.cs
* Improve clarity on duplicate move check
* Search reverse
For a dual stage chain, finds it first iteration rather than second.
AltForm & Form & Forme => Form
GenNumber & Generation => Generation
Extract out SpeciesForm interface, and re-add IGeneration
For those using PKHeX as a dependency, this should be a pretty straightforward manual replacement... GenNumber and AltForm should be quick find-replace`s.
Co-Authored-By: sciresm <sciresm@users.noreply.github.com>
Co-Authored-By: Matt <sora10pls@users.noreply.github.com>
Co-Authored-By: Archit Date <architdate@gmail.com>
espurr-F evolves to form-1 from form0, even tho the form arg is -1 (gen7
consideration)
gen8 has 0/1 for the two evolutions, dictating the destination form
DexLevel was the initial abstraction, which was expanded/reused for
evolution details
I should probably merge the two classes since everything is passed as
EvoCriteria
The encounter generators do some silly form fuzzy match which can now be
more accurately checked since I've moved Form to DexLevel... maybe a
future commit can clean that up.
encounterarea2 was reusing this class, just use a throwaway readonly
struct as our temp value storage
- Use tail recursion and a lookup table (species | form) for reversing
- generate the reversal lookup by extrapolating all species-form
destination values (EvolutionLink)
All tests pass, and no special handling for forms is required. Kinda
suspicious that it works this simply...
Redo evolution banning (no wormhole for non-Alolan evolutions in SM), in
a style that we can ban the Gigantamax event evolutions
(pika/meowth/eevee). Their evolutions can't be resulted from a pre-evo,
because the in-game routine early aborts if the gigantamax flag is set
for those species.
Update gen4 personal tables (formCount was 0, needs to be a minimum of 1
by default)
Closes#2537
Now recognizes & reverses form-changing evolution chains like Sirfetch'd
basically the whole process is to build the tree but point in the
opposite direction (for de-evolution paths)
reducing allocations, increasing clarity by removing some magic numbers
probably can rewrite some of the evo loading/checking for even less, but
good for now.
reduce nesting (evo.RequiresLevelUp is checked twice, only check once
and handle path)
compact some methods
seal some classes
add a little xmldoc to exposed members
Rename "Flag" to "Method"; isn't used besides for indicating the evo
Method.
Remove some unnecessary duplicate checks
- always >=1 in chain at start
- mostEvolved already checked for > maxspeciesgen
Too many classes in the same file, break up.
simplify things a little in EncounterArea (remove passing thru nulls,
should throw excpetion immediately if misconfigured).
