import type { Ability } from "@/data/abilities";
import type { TypeName } from "@/types";
interface ApplyAbilityEffectsParams {
damage: number;
moveType: TypeName;
attackerAbility?: Ability;
defenderAbility?: Ability;
attackerAbilityActive?: boolean;
defenderAbilityActive?: boolean;
typeEffectiveness?: number;
isPhysical?: boolean;
}
export const applyAbilityEffects = (
params: ApplyAbilityEffectsParams,
): number => {
const {
damage,
moveType,
attackerAbility,
defenderAbility,
attackerAbilityActive,
defenderAbilityActive,
typeEffectiveness,
isPhysical,
} = params;
// 防御側とくせいによる無効化チェック（早期return）
if (defenderAbility) {
if (defenderAbility.name === "ふゆう" && moveType === "じめん") {
return 0;
}
if (
defenderAbility.name === "ふしぎなまもり" &&
typeEffectiveness !== undefined &&
typeEffectiveness <= 1
) {
return 0;
}
}
// 攻撃側とくせいによるダメージ補正を計算
const attackerModifiedDamage = (() => {
if (!attackerAbility) {
return damage;
}
// 常時発動とくせい
const constantAbilityDamage = (() => {
if (
(attackerAbility.name === "ちからもち" ||
attackerAbility.name === "ヨガパワー") &&
isPhysical
) {
return Math.floor(damage * 2);
}
if (attackerAbility.name === "はりきり" && isPhysical) {
return Math.floor(damage * 1.5);
}
return damage;
})();
// 条件付きとくせい（発動時のみ）
if (!attackerAbilityActive) {
return constantAbilityDamage;
}
// HP1/3以下で発動するタイプ強化とくせい
if (
(attackerAbility.name === "もうか" && moveType === "ほのお") ||
(attackerAbility.name === "げきりゅう" && moveType === "みず") ||
(attackerAbility.name === "しんりょく" && moveType === "くさ") ||
(attackerAbility.name === "むしのしらせ" && moveType === "むし")
) {
return Math.floor(constantAbilityDamage * 1.5);
}
// こんじょう（状態異常時、物理攻撃1.5倍）
if (attackerAbility.name === "こんじょう" && isPhysical) {
return Math.floor(constantAbilityDamage * 1.5);
}
// プラス/マイナス（ダブルバトルで相手がプラス/マイナス持ちの時、特殊攻撃1.5倍）
if (
(attackerAbility.name === "プラス" ||
attackerAbility.name === "マイナス") &&
!isPhysical
) {
return Math.floor(constantAbilityDamage * 1.5);
}
return constantAbilityDamage;
})();
// 防御側とくせいによるダメージ軽減
if (
defenderAbility &&
defenderAbility.name === "ふしぎなうろこ" &&
defenderAbilityActive &&
isPhysical
) {
return Math.floor((attackerModifiedDamage * 2) / 3);
}
return attackerModifiedDamage;
};
