isleward/src/server/mods/feature-cards/index.js

let cards = require('./cards');

module.exports = {
	name: 'Feature: Cards',

	extraScripts: [
		'cards'
	],

	init: function () {
		cards.init();

		this.events.on('onBeforeDropBag', this.onBeforeDropBag.bind(this));
		this.events.on('onGetCardSetReward', this.onGetCardSetReward.bind(this));
		this.events.on('onBeforeGetItem', this.onBeforeGetItem.bind(this));
	},

	onBeforeDropBag: function (dropper, items, looter) {
		if (!looter.player)
			return;

		let dropEvent = {
			chanceMultiplier: 1,
			source: dropper
		};
		looter.fireEvent('beforeGenerateLoot', dropEvent);
		if (Math.random() >= dropEvent.chanceMultiplier)
			return;

		let res = cards.getCard(looter, dropper);
		if (!res)
			return;

		items.push(res);
	},

	onBeforeGetItem: function (item, obj) {
		if ((!obj.player) && (item.type !== 'Reward Card'))
			return;

		cards.fixCard(item);
	},

	onGetCardSetReward: function (set, obj) {
		let reward = cards.getReward(obj, set);
		if (!reward.push)
			reward = [reward];

		reward.forEach(r => obj.inventory.getItem(r));
	}
};