121 lines
5.0 KiB
TypeScript
121 lines
5.0 KiB
TypeScript
import { ApiCall } from "tsrpc";
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import { ReqReceive, ResReceive } from '../../../shared/protocols/event/payForDiamond/PtlReceive';
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import { playerCanReceive } from './ApiCanReceive';
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import { PublicShared } from "../../../shared/public/public";
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import { PlayerFun } from "../../../public/player";
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type diamondWeightGroup = {
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weight: number;
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numrange: [ min: number, max: number];
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};
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const hasGotKeyPrefix = 'payForDiamond:hasGot:'; // 已领取额度
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const hasGotLockKey = "payForDiamond:lock"; // 更新锁, TTL 1s
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const showOffListKeyPrefix = 'payForDiamond:ShowOff:'; // 需要炫耀的玩家列表。 其中需要包含信息：玩家区服, 玩家玩家名称, 领到的数量
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/**
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* @param groups 各分组及其权重
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*/
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function randomWithWeight(groups: diamondWeightGroup[]) {
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let maxAmount: number;
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let totalWeights = 0;
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for (const group of groups) {
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totalWeights += group.weight;
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if (!maxAmount) {
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maxAmount = group.numrange[1];
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} else {
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maxAmount = Math.max(maxAmount, group.numrange[1]);
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}
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}
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const randomValue = Math.random() * totalWeights; // 随机值落在[0, totalWeights) 之间
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let currSum = 0;
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for (const group of groups) {
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if (currSum <= randomValue && randomValue < currSum + group.weight) {
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return { group, maxAmount };
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} else {
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currSum += group.weight;
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}
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}
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const length = groups.length;
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return { group: groups[length - 1], maxAmount };
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}
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/**
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* 计算玩家分得的钻石数量
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* @param remaining
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* @param group
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* @param maxAmount
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*/
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function calcDiamondGot(remaining: number, group: diamondWeightGroup, maxAmount: number) {
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const [min, max] = group.numrange;
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const randomAmount = Math.floor(Math.random() * (max - min)) + min + 1; // max 值应能够取到, 故 +1
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// 剩余数额小于组内随机得到的值, 全给吧
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if (randomAmount > remaining) {
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return remaining;
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}
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// 随机值大于最大值, 取最大值
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if (randomAmount > maxAmount) {
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return maxAmount;
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}
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return randomAmount;
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}
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export default async function (call: ApiCall<ReqReceive, ResReceive>) {
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const canReceiveResult = await playerCanReceive(call);
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if (canReceiveResult) { // 该值不存在的情况已被函数直接返回 error, 无需再处理
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if (!canReceiveResult.result) {
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return call.succ({
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amount: 0,
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timesRemaining: 0,
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showOff: false
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});
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}
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const activityData = canReceiveResult.activityInfo.data;
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// 更新 redis 领取记录之前先加锁, 防止多领
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const lockResult = await G.crossioredis.setnx(hasGotLockKey, 1);
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if (lockResult) {
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await G.crossioredis.expire(hasGotLockKey, 1); // 设置 ttl 避免死锁
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const activityId = call.req.activityId;
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const hasReceivedKey = hasGotKeyPrefix + activityId;
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const hasReceivedStr = await G.crossioredis.get(hasReceivedKey);
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const hasReceived = hasReceivedStr? parseInt(hasReceivedStr) : 0;
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const remaining = activityData['totalmoney'] - hasReceived;
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if (remaining <= 0) {
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return call.succ({
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amount: 0
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});
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} else {
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const { group, maxAmount } = randomWithWeight(activityData['groupConf']['base']['arr']);
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const gotAmount = calcDiamondGot(remaining, group, maxAmount);
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await G.crossioredis.incrby(hasReceivedKey, Math.abs(gotAmount)); // 添加已领取的额度
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await G.crossioredis.del(hasGotLockKey); // 移除锁
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await PlayerFun.sendPrize(call, [{ 'a': 'attr', 't': 'rmbmoney', 'n': gotAmount }]);
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const showOff = gotAmount >= activityData['groupConf']['base']['loglimit'];
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call.succ({ // 领取核心逻辑完成, 请求可以返回了
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amount: gotAmount,
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timesRemaining: 0,
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showOff,
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});
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// 添加玩家领取记录
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const zeroTime = PublicShared.getToDayZeroTime();
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const setObj = {};
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setObj[zeroTime] = gotAmount;
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await G.mongodb.cEvent('payForDiamond').updateOne({ uid: call.uid, type: 'payForDiamond' }, {
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$set: setObj
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}, {upsert: true});
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// 炫耀
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if (showOff) {
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const msg = JSON.stringify({
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name: call.conn.gud.name, gotAmount, serverID: call.conn.gud.sid
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});
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const showOffListKey = showOffListKeyPrefix + activityId;
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await G.crossioredis.lpush(showOffListKey, msg);
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await G.crossioredis.ltrim(showOffListKey, 0, 49); // 限制列表保存 50 条消息, 避免无限增长
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}
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}
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} else {
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return call.succ({
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amount: 0
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});
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}
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}
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} |