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
Closes#3318
Gen8: if held item, only give if can be legally held; if dmax crystal, only give if available.
Gen8b: if held item, only give if can be legally held
Others: unimplemented; pull requests accepted.
They cannot be given to a Pokémon to hold in-game. Also label new Pikachu/Eevee Dynamax Crystals.
Co-Authored-By: Lusamine <30205550+Lusamine@users.noreply.github.com>
took me less than an hour to do these changes, and i can flag bad form movesets no problemo
Expect tightening of restrictions (ball, level, shininess) later
if someone wants to curate met date restrictions, go ahead!
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>
Add small Female Hippopotas/Hippowdon sprites (Closes#2789)
Add Pt Togepi Gift Egg Event Constant (Closes#2801)
Remove Pokémon Den from Egg Locations (Closes#2804)
Fix Shiny Dhelmise sprite (as per 3774e0dd34)
Remove non-galar species from gen8 banlist
Add Ban_NoHidden8Apricorn -- all of these aren't even breedable in-game anyways, but futureproof for DLC? ;)
held item list now allocates less (concat arrays instead of ienumerables)
item list already prunes out of range items, so simplify data source fetch
simplify item list prune (return as list, so we can call RemoveAll instead of Where.ToList)
