@Override public boolean invoke(String playerName) { // Prerequisite MacChicken built. BuildingsHelper helper = new BuildingsHelper(); Buildings building_record = helper.getBuildings(playerName); if (building_record == null) { return false; } int chicken_level = building_record.getMacchicken(); if (chicken_level == Building.NOT_BUILT_LEVEL) { return false; } // Increase students starvation. increaseStarvation(playerName, LotteryManager.MEDIUM); return true; }