活动：刷新商店支持根据权重筛选商品

shared/domain/activityField/refreshShopField.ts

@@ -1,7 +1,7 @@
 import moment = require('moment');
 import { REFRESH_TIME } from '../../consts';
 import { ActivityModelType } from '../../db/Activity';
-import { ActivityRefreshShopModelType } from '../../db/ActivityRefreshShop';
+import { ActivityRefreshShopModelType, GoodsInfo } from '../../db/ActivityRefreshShop';
 import { ActivityBase } from './activityField';
 
 // 每个商品的内容
@@ -16,6 +16,9 @@ export class RefreshShopItem {
     imageName: string;
     discount: number;        //折扣
     pageIndex: number;      // 第几页
+    levelLimitMin: number;   //玩家最低等级 0:不限制
+    levelLimitMax: number;   //玩家最高等级 0:不限制
+    weight: number;           //随机权重
 
     buyCount: number = 0;   //购买过的次数
 
@@ -30,6 +33,9 @@ export class RefreshShopItem {
         this.imageName = data.imageName;
         this.discount = data.discount ? data.discount : 0;
         this.consume = data.consume ? data.consume : '';
+        this.levelLimitMin = data.levelLimitMin ? data.levelLimitMin : 0;
+        this.levelLimitMax = data.levelLimitMax ? data.levelLimitMax : 0;
+        this.weight = data.weight ? data.weight : 0;
         this.buyCount = 0;
     }
 }
@@ -39,6 +45,7 @@ export class RefreshShopItem {
 export class RefreshShopPage {
     pageIndex: number;      // 第几页
     name: string;           //名字
+    viewCount: number;       //随机可购买的商品个数
     items: Array<RefreshShopItem> = [];//商品列表
     constructor(data: any) {
         this.pageIndex = data.pageIndex;
@@ -46,6 +53,7 @@ export class RefreshShopPage {
         for (let item of data.items) {
             this.items.push(new RefreshShopItem(item, data.pageIndex))
         }
+        this.viewCount = data.viewCount ? data.viewCount : this.items.length;
     }
 }
 
@@ -58,6 +66,45 @@ export class RefreshShopData extends ActivityBase {
     nextRefreshTime: number;//下次刷新时间
     roundIndex: number = 1;//周期数从1开始
 
+    //随机出商店可购买的商品数据
+    public randomGoodsItems() {
+        let goods: GoodsInfo[] = [];
+        for (let pageData of this.list) {
+            let pageIndex = pageData.pageIndex;
+            let randomCount = pageData.viewCount;
+            pageData.items = this.randomGoods(pageData.items, randomCount);
+            for (let item of pageData.items) {
+                goods.push({
+                    pageIndex: pageIndex,
+                    id: item.id
+                })
+            }
+        }
+        return goods;
+    }
+
+    //根据权重随机物品
+    public randomGoods(allGoodsArray: RefreshShopItem[], maxNum: number) {
+        let maxCount = 100;//防止策划数值填错...出现过这个情况
+        let goodsArray = [];
+        while ((goodsArray.length < maxNum) && (allGoodsArray.length > 0) && (maxCount >= 0)) {
+            let totalWeight = allGoodsArray.reduce((pre, cur) => {
+                return pre + cur.weight || 1;
+            }, 0);
+            let random = Math.floor(totalWeight * Math.random());
+            for (let index = 0; index < allGoodsArray.length; index++) {
+                random -= allGoodsArray[index].weight;
+                if (random < 0) {
+                    let rmObj = allGoodsArray.splice(index, 1)
+                    goodsArray.push(rmObj[0]);
+                    break;
+                }
+            }
+            maxCount--;
+        }
+        return goodsArray;
+    }
+
     public findItemByProductID(productID: string): RefreshShopItem {
         for (let pageData of this.list) {
             let index = pageData.items.findIndex(obj => { return obj && obj.productID === productID });
@@ -91,6 +138,15 @@ export class RefreshShopData extends ActivityBase {
                 item.buyCount = buyRecords.length;
             }
         }
+
+        let goods = data.goods ? data.goods : [];
+        for (let pageData of this.list) {
+            pageData.items = pageData.items.filter(item => {
+                let index = goods.findIndex(obj => { return obj.pageIndex == pageData.pageIndex && obj.id == item.id });
+                return (index != -1);
+            })
+        }
+
     }