Module party 

Generic, game-agnostic party / monster model (milestone P0a).

This module lifts the party/monster/box model out of any specific game into the engine. The engine knows nothing game-specific: species, moves, items, stat formulas, EXP curves, and evolution conditions are all supplied by the game through provider traits, mirroring the existing crate::GameData / crate::battle::BattleProvider / crate::battle::ItemProvider pattern.

The engine offers mechanism (storing instances, driving level-up / evolution / party transitions); the game supplies policy (the numbers).

There is no rand dependency: if a game needs randomness (e.g. for DV/IV generation) it computes the value itself and hands the result to the engine, which only ever stores it.

Structs

BoxStore

A collection of storage boxes plus a “currently selected” box, with both the box count and per-box capacity supplied by the game.

LevelUp

Result of an EXP gain: what happened to the monster’s level.

MonsterInstance

A generic monster instance: species, level, exp, computed stats, status, and known moves. All numbers are delegated to the MonsterProvider.

MoveSlot

A single known move with its current and bonus PP.

Party

An ordered party of monsters with a provider/param-defined capacity.

PartyFull

Error returned when adding to a full Party or StorageBox.

StatSet

A small map from P::Stat to u16.

StorageBox

A single storage box with a game-defined capacity. Same add/remove/len/ is_full surface as Party.

Enums

EvolutionTrigger

What caused an evolution check. Parameterized by the game’s opaque item id so the engine stays decoupled from any item system.

MonsterStatus

Engine-level status condition for a stored monster.

Traits

EvolutionProvider

Evolution hooks. Layered on top of MonsterProvider.

ExpProvider

Total EXP / leveling hooks. Layered on top of MonsterProvider so the same id types are reused.

MonsterProvider

Game-supplied definition of how monsters work.