Introducing held items

src/modifier/held-items.ts

@@ -0,0 +1,230 @@
+import type Pokemon from "#app/field/pokemon";
+import { globalScene } from "#app/global-scene";
+import type { Localizable } from "#app/interfaces/locales";
+import type { Constructor, NumberHolder } from "#app/utils";
+import { PokemonType } from "#enums/pokemon-type";
+import i18next from "i18next";
+
+export enum HeldItemType {
+  NONE,
+
+  SITRUS_BERRY = 1,
+  LEPPA_BERRY,
+
+  SILK_SCARF = 101,
+  BLACK_BELT,
+  SHARP_BEAK,
+  POISON_BARB,
+  SOFT_SAND,
+  HARD_STONE,
+  SILVER_POWDER,
+  SPELL_TAG,
+  METAL_COAT,
+  CHARCOAL,
+  MYSTIC_WATER,
+  MIRACLE_SEED,
+  MAGNET,
+  TWISTED_SPOON,
+  NEVER_MELT_ICE,
+  DRAGON_FANG,
+  BLACK_GLASSES,
+  FAIRY_FEATHER,
+}
+
+export class HeldItem implements Localizable {
+  //  public pokemonId: number;
+  public type: HeldItemType;
+  public maxStackCount: number;
+  public isTransferable = true;
+  public isStealable = true;
+  public isSuppressable = true;
+  public attrs: HeldItemAttr[];
+
+  public name: string;
+  public description: string;
+  public icon: string;
+
+  constructor(type: HeldItemType, maxStackCount = 1, name, description, icon) {
+    this.type = type;
+    this.maxStackCount = maxStackCount;
+
+    this.isTransferable = true;
+    this.isStealable = true;
+    this.isSuppressable = true;
+
+    this.name = name;
+    this.description = description;
+    this.icon = icon;
+  }
+
+  //TODO: we might want to change things to make this work... otherwise it's pointless
+  // to derive from Localizable.
+  localize(): void {}
+
+  //  get name(): string {
+  //    return i18next.t(`modifierType:AttackTypeBoosterItem.${AttackTypeBoosterItem[this.moveType]?.toLowerCase()}`);
+  //  }
+
+  //  getDescription(): string {
+  //    return
+  //  }
+
+  untransferable(): HeldItem {
+    this.isTransferable = false;
+    return this;
+  }
+
+  unstealable(): HeldItem {
+    this.isStealable = false;
+    return this;
+  }
+
+  unsuppressable(): HeldItem {
+    this.isSuppressable = false;
+    return this;
+  }
+
+  attr<T extends Constructor<HeldItemAttr>>(AttrType: T, ...args: ConstructorParameters<T>): HeldItem {
+    const attr = new AttrType(...args);
+    this.attrs.push(attr);
+
+    return this;
+  }
+
+  /**
+   * Get all ability attributes that match `attrType`
+   * @param attrType any attribute that extends {@linkcode AbAttr}
+   * @returns Array of attributes that match `attrType`, Empty Array if none match.
+   */
+  getAttrs<T extends HeldItemAttr>(attrType: Constructor<T>): T[] {
+    return this.attrs.filter((a): a is T => a instanceof attrType);
+  }
+
+  hasAttr<T extends HeldItemAttr>(attrType: Constructor<T>): boolean {
+    return this.getAttrs(attrType).length > 0;
+  }
+
+  getMaxStackCount(): number {
+    return this.maxStackCount;
+  }
+
+  getIcon(stackCount: number, _forSummary?: boolean): Phaser.GameObjects.Container {
+    const container = globalScene.add.container(0, 0);
+
+    const item = globalScene.add.sprite(0, 12, "items");
+    item.setFrame(this.icon);
+    item.setOrigin(0, 0.5);
+    container.add(item);
+
+    const stackText = this.getIconStackText(stackCount);
+    if (stackText) {
+      container.add(stackText);
+    }
+
+    return container;
+  }
+
+  getIconStackText(stackCount: number): Phaser.GameObjects.BitmapText | null {
+    if (this.getMaxStackCount() === 1) {
+      return null;
+    }
+
+    const text = globalScene.add.bitmapText(10, 15, "item-count", stackCount.toString(), 11);
+    text.letterSpacing = -0.5;
+    if (stackCount >= this.getMaxStackCount()) {
+      text.setTint(0xf89890);
+    }
+    text.setOrigin(0, 0);
+
+    return text;
+  }
+
+  getScoreMultiplier(): number {
+    return 1;
+  }
+}
+
+export abstract class HeldItemAttr {
+  public showItem: boolean;
+
+  constructor(showItem = false) {
+    this.showItem = showItem;
+  }
+
+  /**
+   * Applies ability effects without checking conditions
+   * @param pokemon - The pokemon to apply this ability to
+   * @param itemType - Whether or not the ability is a passive
+   * @param args - Extra args passed to the function. Handled by child classes.
+   * @see {@linkcode canApply}
+   */
+  apply(..._args: any[]): void {}
+
+  getTriggerMessage(_pokemon: Pokemon, _itemType: HeldItemType, ..._args: any[]): string | null {
+    return null;
+  }
+
+  //TODO: May need to add back some condition logic... we'll deal with that later on
+}
+
+export class AttackTypeBoosterHeldItemAttr extends HeldItemAttr {
+  public moveType: PokemonType;
+  public powerBoost: number;
+
+  constructor(moveType: PokemonType, powerBoost: number) {
+    super();
+    this.moveType = moveType;
+    this.powerBoost = powerBoost;
+  }
+
+  override apply(stackCount: number, args: any[]): void {
+    const moveType = args[0];
+    const movePower = args[1];
+
+    if (moveType === this.moveType && movePower.value >= 1) {
+      (movePower as NumberHolder).value = Math.floor(
+        (movePower as NumberHolder).value * (1 + stackCount * this.powerBoost),
+      );
+    }
+  }
+}
+
+export function applyHeldItemAttrs(attrType: Constructor<HeldItemAttr>, pokemon: Pokemon, ...args: any[]) {
+  if (pokemon) {
+    for (const [item, stackCount] of pokemon.getHeldItems2()) {
+      if (allHeldItems[item].hasAttr(attrType)) {
+        attrType.apply(stackCount, ...args);
+      }
+    }
+  }
+}
+
+export const allHeldItems = [new HeldItem(HeldItemType.NONE, 0, "", "", "")];
+
+export function initHeldItems() {
+  allHeldItems.push(
+    new HeldItem(
+      HeldItemType.SILK_SCARF,
+      99,
+      i18next.t("modifierType:AttackTypeBoosterItem.silk_scarf"),
+      i18next.t("modifierType:ModifierType.AttackTypeBoosterModifierType.description", {
+        moveType: i18next.t("pokemonInfo:Type.NORMAL"),
+      }),
+      "silk_scarf",
+    ).attr(AttackTypeBoosterHeldItemAttr, PokemonType.NORMAL, 0.2),
+    new HeldItem(
+      HeldItemType.BLACK_BELT,
+      99,
+      i18next.t("modifierType:AttackTypeBoosterItem.black_belt"),
+      i18next.t("modifierType:ModifierType.AttackTypeBoosterModifierType.description", {
+        moveType: i18next.t("pokemonInfo:Type.FIGHTING"),
+      }),
+      "black_belt",
+    ).attr(AttackTypeBoosterHeldItemAttr, PokemonType.FIGHTING, 0.2),
+  );
+}
+
+//TODO: I hate this. Can we just make it an interface?
+export function getHeldItem(itemType: HeldItemType): HeldItem {
+  return allHeldItems.find(item => item.type === itemType)!; // TODO: is this bang correct?
+}