Various fixes

src/data/balance/pokemon-evolutions.ts

@@ -11,11 +11,11 @@ import { MoveId } from "#enums/move-id";
 import { SpeciesId } from "#enums/species-id";
 import { SpeciesFormKey } from "#enums/species-form-key";
 import { TimeOfDay } from "#enums/time-of-day";
-import { DamageMoneyRewardModifier, ExtraModifierModifier, MoneyMultiplierModifier, SpeciesStatBoosterModifier, TempExtraModifierModifier } from "#app/modifier/modifier";
-import type { SpeciesStatBoosterModifierType } from "#app/modifier/modifier-type";
 import { speciesStarterCosts } from "./starters";
 import i18next from "i18next";
 import { initI18n } from "#app/plugins/i18n";
+import { allHeldItems } from "#app/items/all-held-items";
+import { HeldItemId } from "#enums/held-item-id";
 
 export enum SpeciesWildEvolutionDelay {
   NONE,
@@ -274,10 +274,7 @@ class MoveTypeEvolutionCondition extends SpeciesEvolutionCondition {
 
 class TreasureEvolutionCondition extends SpeciesEvolutionCondition {
   constructor() {
-    super(p => p.evoCounter
-      + p.getHeldItems().filter(m => m instanceof DamageMoneyRewardModifier).length
-      + globalScene.findModifiers(m => m instanceof MoneyMultiplierModifier
-        || m instanceof ExtraModifierModifier || m instanceof TempExtraModifierModifier).length > 9);
+    super(p => allHeldItems[HeldItemId.GIMMIGHOUL_EVO_TRACKER].getStackCount(p) > 9);
     this.description = i18next.t("pokemonEvolutions:treasure");
   }
 }
@@ -1794,8 +1791,8 @@ export const pokemonEvolutions: PokemonEvolutions = {
   ],
   [SpeciesId.CLAMPERL]: [
     // TODO: Change the SpeciesEvolutionConditions here to use a bespoke HeldItemEvolutionCondition after the modifier rework
-    new SpeciesEvolution(SpeciesId.HUNTAIL, 1, EvolutionItem.LINKING_CORD, new SpeciesEvolutionCondition(p => p.getHeldItems().some(m => m instanceof SpeciesStatBoosterModifier && (m.type as SpeciesStatBoosterModifierType).key === "DEEP_SEA_TOOTH")), SpeciesWildEvolutionDelay.VERY_LONG),
-    new SpeciesEvolution(SpeciesId.GOREBYSS, 1, EvolutionItem.LINKING_CORD, new SpeciesEvolutionCondition(p => p.getHeldItems().some(m => m instanceof SpeciesStatBoosterModifier && (m.type as SpeciesStatBoosterModifierType).key === "DEEP_SEA_SCALE")), SpeciesWildEvolutionDelay.VERY_LONG)
+    new SpeciesEvolution(SpeciesId.HUNTAIL, 1, EvolutionItem.LINKING_CORD, new SpeciesEvolutionCondition(p => p.heldItemManager.hasItem(HeldItemId.DEEP_SEA_TOOTH)), SpeciesWildEvolutionDelay.VERY_LONG),
+    new SpeciesEvolution(SpeciesId.GOREBYSS, 1, EvolutionItem.LINKING_CORD, new SpeciesEvolutionCondition(p => p.heldItemManager.hasItem(HeldItemId.DEEP_SEA_SCALE)), SpeciesWildEvolutionDelay.VERY_LONG)
   ],
   [SpeciesId.BOLDORE]: [
     new SpeciesEvolution(SpeciesId.GIGALITH, 1, EvolutionItem.LINKING_CORD, null, SpeciesWildEvolutionDelay.VERY_LONG)

src/data/mystery-encounters/utils/encounter-pokemon-utils.ts

@@ -28,7 +28,6 @@ import {
   showEncounterText,
 } from "#app/data/mystery-encounters/utils/encounter-dialogue-utils";
 import { getPokemonNameWithAffix } from "#app/messages";
-import type { PokemonHeldItemModifierType } from "#app/modifier/modifier-type";
 import { modifierTypes } from "#app/modifier/modifier-type";
 import { Gender } from "#app/data/gender";
 import type { PermanentStat } from "#enums/stat";
@@ -37,6 +36,7 @@ import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import type { AbilityId } from "#enums/ability-id";
 import type { PokeballType } from "#enums/pokeball";
 import { StatusEffect } from "#enums/status-effect";
+import type { HeldItemId } from "#enums/held-item-id";
 
 /** Will give +1 level every 10 waves */
 export const STANDARD_ENCOUNTER_BOOSTED_LEVEL_MODIFIER = 1;
@@ -423,6 +423,13 @@ export async function applyModifierTypeToPlayerPokemon(
   globalScene.addModifier(modifier, false, false, false, true);
 }
 
+export function applyHeldItemWithFallback(pokemon: Pokemon, item: HeldItemId, fallbackItem?: HeldItemId) {
+  const added = pokemon.heldItemManager.add(item);
+  if (!added && fallbackItem) {
+    pokemon.heldItemManager.add(fallbackItem);
+  }
+}
+
 /**
  * Alternative to using AttemptCapturePhase
  * Assumes player sprite is visible on the screen (this is intended for non-combat uses)

src/data/pokemon-forms.ts

@@ -25,6 +25,7 @@ import {
   type SpeciesFormChangeTrigger,
   SpeciesFormChangeWeatherTrigger,
 } from "./pokemon-forms/form-change-triggers";
+import i18next from "i18next";
 
 export function formChangeItemName(id: FormChangeItem) {
   return i18next.t(`modifierType:FormChangeItem.${FormChangeItem[id]}`);

src/field/pokemon-held-item-manager.ts

@@ -8,12 +8,12 @@ type HELD_ITEM_DATA = BASE_STAT_TOTAL_DATA | BASE_STAT_FLAT_DATA;
 
 interface HeldItemProperties {
   stack: number;
-  disabled: boolean;
+  disabled?: boolean;
   cooldown?: number;
   data?: HELD_ITEM_DATA;
 }
 
-type HeldItemPropertyMap = {
+export type HeldItemPropertyMap = {
   [key in HeldItemId]?: HeldItemProperties;
 };
 
@@ -21,7 +21,7 @@ interface FormChangeItemProperties {
   active: boolean;
 }
 
-type FormChangeItemPropertyMap = {
+export type FormChangeItemPropertyMap = {
   [key in FormChangeItem]?: FormChangeItemProperties;
 };
 
@@ -73,6 +73,10 @@ export class PokemonItemManager {
     return item ? item.stack : 0;
   }
 
+  overrideItems(newItems: HeldItemPropertyMap) {
+    this.heldItems = newItems;
+  }
+
   add(itemType: HeldItemId, addStack = 1, data?: HELD_ITEM_DATA): boolean {
     const maxStack = allHeldItems[itemType].getMaxStackCount();
     const item = this.heldItems[itemType];

src/items/held-items/bypass-speed-chance.ts

@@ -4,7 +4,7 @@ import type { BooleanHolder } from "#app/utils/common";
 import { globalScene } from "#app/global-scene";
 import i18next from "i18next";
 import { getPokemonNameWithAffix } from "#app/messages";
-import { Command } from "#app/ui/command-ui-handler";
+import { Command } from "#enums/command";
 
 export interface BYPASS_SPEED_CHANCE_PARAMS {
   /** The pokemon with the item */

src/modifier/modifier-type.ts

@@ -46,7 +46,6 @@ import {
   MoneyRewardModifier,
   MultipleParticipantExpBonusModifier,
   PokemonAllMovePpRestoreModifier,
-  PokemonFormChangeItemModifier,
   type PokemonHeldItemModifier,
   PokemonHpRestoreModifier,
   PokemonLevelIncrementModifier,
@@ -1099,8 +1098,8 @@ export class FormChangeItemReward extends PokemonModifierType {
   constructor(formChangeItem: FormChangeItem) {
     super(
       "",
-      FormChangeItem[formChangeItem].toLowerCase(),
-      (_type, args) => new PokemonFormChangeItemModifier(this, (args[0] as PlayerPokemon).id, formChangeItem, true),
+      "",
+      () => null,
       (pokemon: PlayerPokemon) => {
         // Make sure the Pokemon has alternate forms
         if (

src/modifier/modifier.ts

@@ -1,8 +1,6 @@
 import { FusionSpeciesFormEvolution, pokemonEvolutions } from "#app/data/balance/pokemon-evolutions";
 import { getLevelTotalExp } from "#app/data/exp";
 import { MAX_PER_TYPE_POKEBALLS } from "#app/data/pokeball";
-import { SpeciesFormChangeItemTrigger } from "#app/data/pokemon-forms/form-change-triggers";
-import type { FormChangeItem } from "#enums/form-change-item";
 import { getStatusEffectHealText } from "#app/data/status-effect";
 import type Pokemon from "#app/field/pokemon";
 import type { PlayerPokemon } from "#app/field/pokemon";
@@ -10,7 +8,6 @@ import { getPokemonNameWithAffix } from "#app/messages";
 import Overrides from "#app/overrides";
 import { LearnMoveType } from "#enums/learn-move-type";
 import type { VoucherType } from "#app/system/voucher";
-import { Command } from "#enums/command";
 import { addTextObject, TextStyle } from "#app/ui/text";
 import {
   type BooleanHolder,
@@ -31,7 +28,6 @@ import i18next from "i18next";
 import {
   type DoubleBattleChanceBoosterModifierType,
   type EvolutionItemModifierType,
-  type FormChangeItemModifierType,
   type ModifierOverride,
   type ModifierType,
   type TerastallizeModifierType,
@@ -546,107 +542,6 @@ export class TerastallizeAccessModifier extends PersistentModifier {
   }
 }
 
-export abstract class PokemonHeldItemModifier extends PersistentModifier {
-  /** The ID of the {@linkcode Pokemon} that this item belongs to. */
-  public pokemonId: number;
-  /** Whether this item can be transfered to or stolen by another Pokemon. */
-  public isTransferable = true;
-
-  constructor(type: ModifierType, pokemonId: number, stackCount?: number) {
-    super(type, stackCount);
-
-    this.pokemonId = pokemonId;
-  }
-
-  abstract matchType(_modifier: Modifier): boolean;
-
-  match(modifier: Modifier) {
-    return this.matchType(modifier) && (modifier as PokemonHeldItemModifier).pokemonId === this.pokemonId;
-  }
-
-  getArgs(): any[] {
-    return [this.pokemonId];
-  }
-
-  /**
-   * Applies the {@linkcode PokemonHeldItemModifier} to the given {@linkcode Pokemon}.
-   * @param pokemon The {@linkcode Pokemon} that holds the held item
-   * @param args additional parameters
-   */
-  abstract override apply(pokemon: Pokemon, ...args: unknown[]): boolean;
-
-  /**
-   * Checks if {@linkcode PokemonHeldItemModifier} should be applied.
-   * @param pokemon The {@linkcode Pokemon} that holds the item
-   * @param _args N/A
-   * @returns if {@linkcode PokemonHeldItemModifier} should be applied
-   */
-  override shouldApply(pokemon?: Pokemon, ..._args: unknown[]): boolean {
-    return !!pokemon && (this.pokemonId === -1 || pokemon.id === this.pokemonId);
-  }
-
-  isIconVisible(): boolean {
-    return !!this.getPokemon()?.isOnField();
-  }
-
-  getIcon(forSummary?: boolean): Phaser.GameObjects.Container {
-    const container = !forSummary ? globalScene.add.container(0, 0) : super.getIcon();
-
-    if (!forSummary) {
-      const pokemon = this.getPokemon();
-      if (pokemon) {
-        const pokemonIcon = globalScene.addPokemonIcon(pokemon, -2, 10, 0, 0.5, undefined, true);
-        container.add(pokemonIcon);
-        container.setName(pokemon.id.toString());
-      }
-
-      const item = globalScene.add.sprite(16, this.virtualStackCount ? 8 : 16, "items");
-      item.setScale(0.5);
-      item.setOrigin(0, 0.5);
-      item.setTexture("items", this.type.getIcon());
-      container.add(item);
-
-      const stackText = this.getIconStackText();
-      if (stackText) {
-        container.add(stackText);
-      }
-
-      const virtualStackText = this.getIconStackText(true);
-      if (virtualStackText) {
-        container.add(virtualStackText);
-      }
-    } else {
-      container.setScale(0.5);
-    }
-
-    return container;
-  }
-
-  getPokemon(): Pokemon | undefined {
-    return this.pokemonId ? (globalScene.getPokemonById(this.pokemonId) ?? undefined) : undefined;
-  }
-
-  getScoreMultiplier(): number {
-    return 1;
-  }
-
-  getMaxStackCount(forThreshold?: boolean): number {
-    const pokemon = this.getPokemon();
-    if (!pokemon) {
-      return 0;
-    }
-    if (pokemon.isPlayer() && forThreshold) {
-      return globalScene
-        .getPlayerParty()
-        .map(p => this.getMaxHeldItemCount(p))
-        .reduce((stackCount: number, maxStackCount: number) => Math.max(stackCount, maxStackCount), 0);
-    }
-    return this.getMaxHeldItemCount(pokemon);
-  }
-
-  abstract getMaxHeldItemCount(pokemon?: Pokemon): number;
-}
-
 export class LevelIncrementBoosterModifier extends PersistentModifier {
   match(modifier: Modifier) {
     return modifier instanceof LevelIncrementBoosterModifier;
@@ -1254,69 +1149,6 @@ export class ExpBalanceModifier extends PersistentModifier {
   }
 }
 
-export class PokemonFormChangeItemModifier extends PokemonHeldItemModifier {
-  public override type: FormChangeItemModifierType;
-  public formChangeItem: FormChangeItem;
-  public active: boolean;
-  public isTransferable = false;
-
-  constructor(
-    type: FormChangeItemModifierType,
-    pokemonId: number,
-    formChangeItem: FormChangeItem,
-    active: boolean,
-    stackCount?: number,
-  ) {
-    super(type, pokemonId, stackCount);
-    this.formChangeItem = formChangeItem;
-    this.active = active;
-  }
-
-  matchType(modifier: Modifier): boolean {
-    return modifier instanceof PokemonFormChangeItemModifier && modifier.formChangeItem === this.formChangeItem;
-  }
-
-  clone(): PersistentModifier {
-    return new PokemonFormChangeItemModifier(
-      this.type,
-      this.pokemonId,
-      this.formChangeItem,
-      this.active,
-      this.stackCount,
-    );
-  }
-
-  getArgs(): any[] {
-    return super.getArgs().concat(this.formChangeItem, this.active);
-  }
-
-  /**
-   * Applies {@linkcode PokemonFormChangeItemModifier}
-   * @param pokemon The {@linkcode Pokemon} to apply the form change item to
-   * @param active `true` if the form change item is active
-   * @returns `true` if the form change item was applied
-   */
-  override apply(pokemon: Pokemon, active: boolean): boolean {
-    const switchActive = this.active && !active;
-
-    if (switchActive) {
-      this.active = false;
-    }
-
-    const ret = globalScene.triggerPokemonFormChange(pokemon, SpeciesFormChangeItemTrigger);
-
-    if (switchActive) {
-      this.active = true;
-    }
-
-    return ret;
-  }
-
-  getMaxHeldItemCount(_pokemon: Pokemon): number {
-    return 1;
-  }
-}
-
 export class MoneyRewardModifier extends ConsumableModifier {
   private moneyMultiplier: number;
 

src/ui/party-ui-handler.ts

@@ -14,7 +14,7 @@ import { StatusEffect } from "#enums/status-effect";
 import PokemonIconAnimHandler, { PokemonIconAnimMode } from "#app/ui/pokemon-icon-anim-handler";
 import { pokemonEvolutions } from "#app/data/balance/pokemon-evolutions";
 import { addWindow } from "#app/ui/ui-theme";
-import { SpeciesFormChangeItemTrigger, formChangeItemName } from "#app/data/pokemon-forms/form-change-triggers";
+import { SpeciesFormChangeItemTrigger } from "#app/data/pokemon-forms/form-change-triggers";
 import { FormChangeItem } from "#enums/form-change-item";
 import { getVariantTint } from "#app/sprites/variant";
 import { Button } from "#enums/buttons";
@@ -29,6 +29,7 @@ import { getPokemonNameWithAffix } from "#app/messages";
 import type { CommandPhase } from "#app/phases/command-phase";
 import { globalScene } from "#app/global-scene";
 import { HeldItemId } from "#enums/held-item-id";
+import { formChangeItemName } from "#app/data/pokemon-forms";
 
 const defaultMessage = i18next.t("partyUiHandler:choosePokemon");