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
* Revises legality checks to account for traveling between the three game islands (PLA/BDSP/SWSH)
* Adds conversion mechanisms between the three formats, as well as flexible conversion options to backfill missing data (thanks GameFreak/ILCA for opting for lossy conversion instead of updating the games).
* Adds API abstractions for HOME data storage format (EKH/PKH format 1, aka EH1/PH1).
* Revises some APIs for better usage:
- `PKM` now exposes a `Context` to indicate the isolation context for legality purposes.
- Some method signatures have changed to accept `Context` or `GameVersion` instead of a vague `int` for Generation.
- Evolution History is now tracked in the Legality parse for specific contexts, rather than only per generation.
struct implementing interface is boxed when passed to method that accepts interface (not generic method).
Removes IDexLevel (no other inheritors but EvoCriteria) and uses the primitive the data is stored (array, not IReadOnlyList) for slightly better perf.
* 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.
* Add weather types by location
Creates a dictionary of possible weather types for each SWSH location.
Unlisted locations may only have Normal weather or do not have any
encounter slots.
* Prune unused weather from static encounters
Some encounters were too permissive with weather, e.g. Sandstorm in
Fields of Honor and Challenge Beach; Snowstorm at Dyna Tree Hill.
A few crossover areas that would have limited the possible weathers were
marked with a "(c)". An example is Nidorina from Giant's Bed crossing
to Frostpoint Field, where Raining and Thunderstorm do not occur.
This additionally organizes encounters by location.
* Move location-weather dictionary to EncounterArea8
* Verify weather marks on encounterslot/static encounters
* Adds some static encounters available through weather bleed
Weathers aren't normally available, but these static encounters are
close enough to the boundary that the weather in an adjacent area can be
used to spawn them.
- Frostpoint Field Snorlax with Raining/Thunderstorm from Giant's Bed
- Snowslide Slope Amaura with Raining/Thunderstorm from Giant's Bed
- Frigid Sea Carracosta with Intense_Sun from Three-Point Pass
- Frigid Sea Magmortar with Intense_Sun from Three-Point Pass
- Ballimere Lake Corviknight with Snowstorm from Giant's Bed
- Ballimere Lake Cryogonal with Snowstorm from Giant's Bed
- Ballimere Lake Tyrunt with all weather from Giant's Bed
- Lakeside Cave Ferrothorn with all weather from Ballimere Lake
- Tunnel to the Top Golbat with all weather from Path to the Peak
* Defer weather marks if incompatible, enforce encounterslot weather
This uses the area weather to check fishing slots and tentatively adds
some tables for weather bleed encounterslots.
* Warm-Up Tunnel gets weather bleed from Training Lowlands
* Update for base PKHeX
* Handle weather bleed for SWSH encounter slots
Co-authored-by: Skadiv <62726360+Skadiv@users.noreply.github.com>
* Minor clean
Having duplicate weather marks is illegal, so just auto-partial match them instead of checking the other marks.
* Rearrange slot weather check logic
* Claim reserved byte in SWSH pkl
* No need for two variable names now
* Valid weather marks on tree/fishing should return with main weather
* Fix tree/fishing deferral and add another surf slot weather bleed
* Disallow tree/fishing encounters from using bleed tables
None are currently known at this time, and only hidden grass encounters
have a weather bleed table
* Condense bleed expression, combine tree/fish flag check
* Move weather-bleed check into EncounterArea8
Makes the dictionaries private instead of internal.
Co-authored-by: Skadiv <62726360+Skadiv@users.noreply.github.com>
Nice bug ya got there, gamefreak.
Coulda cleared the AffixedRibbon value instead of copying it on Shedinja creation, and it would have made this unnecessary.
Please ditch the Affixed Ribbon gimmick for future games, thanks!
Relocate the SetRandomEC at the tail end of the generator into the specific classes that set EC, so that our correlation generators don't have their EC overwritten at the end.
## Issue
We want to discard-but-remember any slots that aren't a perfect fit, on the off chance that a better one exists later in the search space. If there's no better match, then we gotta go with what we got.
## Example:
Wurmple exists in area `X`, and also has a more rare slot for Silcoon, with the same level for both slots.
* We have a Silcoon that we've leveled up a few times.
Was our Silcoon originally a Wurmple, or was it caught as a Silcoon?
* To be sure, we have to check the EC/PID if the Wurmple wouldn't evolve into Cascoon instead.
* We don't want to wholly reject that Wurmple slot, as maybe the Met Level isn't within Silcoon's slot range.
---
Existing implementation would store "deferred" matches in a list; we only need to keep 1 of these matches around (less allocation!). We also want to differentiate between a "good" deferral and a "bad" deferral; I don't think this is necessary but it's currently used by Mystery Gift matching (implemented for the Eeveelution mystery gifts which matter for evolution moves).
The existing logic didn't use inheritance, and instead had static methods being reused across generations. Quite kludgy. Also, the existing logic was a pain to modify the master encounter yield methods, as one generation's quirks had to not impact all other generations that used the method.
---
The new implementation splits out the encounter yielding methods to be separate for each generation / subset. Now, things don't have to check `WasLink` for Gen7 origin, because Pokémon Link wasn't a thing in Gen7.
---
## Future
Maybe refactoring yielders into "GameCores" that expose yielding behaviors / properties, rather than the static logic. As more generations and side-gamegroups get added (thanks LGPE/GO/GameCube), all this switch stuff gets annoying to maintain instead of just overriding/inheritance.
## Conclusion
This shouldn't impact any legality results negatively; if you notice any regressions, report them! This should reduce false flags where we didn't defer-discard an encounter when we should have (wild area mons being confused with raids).
This only matches the weather table with the Pokemon and does not fully
account for whether a location can spawn a particular weather.
Additional minor changes:
- Adds ScriptedNoMarks to Regis and Glimwood Tangle static encounters
- Corrects a few version-specific Pokemon such as Ludicolo/Shiftry
- Removes erroneous encounters such as Milotic in East/West Lake Axewell
- Removes an unused Motostoke Stadium encounter
Move form-info logic from FormConverter to AltFormInfo; now FormConverter is entirely form=>string[]
Add a bunch of xmldoc
Make pogo no-end-date cmp agaisnt UTCnow rather than local now.
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>
