行動の適用対象をステートでフィルタするプラグインのサンプル

filterTarget.js

(() => {
  'use strict';

  /**
   * @param {Game_Action.prototype} gameAction
   */
  function Game_Action_FilterTargetMixIn(gameAction) {
    const _makeTargets = gameAction.makeTargets;
    gameAction.makeTargets = function () {
      return this.filterTarget(_makeTargets.call(this));
    };

    gameAction.filterTarget = function (targets) {
      if (this.isForStateAffected()) {
        const stateId = Number(this.item().meta.forStateAffected);
        targets = targets.filter(target => target.isStateAffected(stateId));
      }
      return targets;
    };

    gameAction.isForStateAffected = function () {
      return !!this.item().meta.forStateAffected;
    };
  }

  Game_Action_FilterTargetMixIn(Game_Action.prototype);
})();