go_dreamfactory/modules/caravan/api_buyorsell.go

package caravan

import (
	"go_dreamfactory/comm"
	"go_dreamfactory/pb"
	cfg "go_dreamfactory/sys/configure/structs"
)

//参数校验
func (this *apiComp) BuyOrSellCheck(session comm.IUserSession, req *pb.CaravanBuyOrSellReq) (code pb.ErrorCode) {
	if len(req.Items) == 0 || req.City == 0 {
		code = pb.ErrorCode_ReqParameterError
	}
	return
}

func (this *apiComp) BuyOrSell(session comm.IUserSession, req *pb.CaravanBuyOrSellReq) (code pb.ErrorCode, data *pb.ErrorData) {
	var (
		update     map[string]interface{}
		addScore   int32 // 收益
		cityInfo   *pb.CityInfo
		ok         bool
		upperLimit int32 // 单个物品堆叠上限
	)
	update = make(map[string]interface{})
	if code = this.BuyOrSellCheck(session, req); code != pb.ErrorCode_Success {
		return // 参数校验失败直接返回
	}
	caravan, _ := this.module.modelCaravan.getCaravanList(session.GetUserId())

	cityInfo, ok = caravan.City[req.City]
	if !ok {
		code = pb.ErrorCode_ConfigNoFound
		return
	}
	if c := this.module.configure.GetCaravanLv(caravan.Lv); c != nil {
		upperLimit = c.Bagtagnum // 获取单个格子堆叠数
	}

	// special 城市卖给玩家的商品
	// exspecial 城市想要玩家卖给他的商品库
	if !req.IsBuy { // 卖给npc
		for k, v := range req.Items {
			// 校验背包数据够不够
			caravan.Items[k].Count -= v
			if caravan.Items[k].Count < 0 {
				code = pb.ErrorCode_TrollItemNoEnough // 道具数量不足
				return
			}
			items := caravan.Items[k]
			var price int32
			price = items.Price
			bFound := false
			for _, v := range cityInfo.Special {
				if v == k {
					if cityConf := this.module.configure.GetCaravanCity(req.City); cityConf != nil {
						price = cityConf.Specialnum * price / 1000
						bFound = true
					}
					break
				}
			}
			if !bFound {
				if cityConf := this.module.configure.GetCaravanCity(req.City); cityConf != nil {
					for _, v := range cityConf.Exspecial {
						if v == k {
							price = cityConf.Exspecialnum * price / 1000
						}
					}
				}
			}
			addScore += price * v // 卖出收益
		}
		if this.module.ArrayBag(caravan, upperLimit) { // 背包满了
			code = pb.ErrorCode_TrollMaxItemCount
			return
		}
		// 统计 收益
		var lvReward []*cfg.Gameatn
		caravan.Profit += int64(addScore)
		update["profit"] = caravan.Profit
		curLv := this.module.CheckCaravavLvUp(caravan)
		if curLv > caravan.Lv {
			for i := caravan.Lv; i <= curLv-caravan.Lv; i++ {
				if c := this.module.configure.GetCaravanLv(int32(i)); c != nil {
					lvReward = append(lvReward, c.Reward...)
				}
			}
		}
		if len(lvReward) > 0 {
			if reward := this.module.DispenseRes(session, lvReward, true); reward != pb.ErrorCode_Success {
				this.module.Errorf("lv reward dispenseRes err:%v", lvReward)
			}
		}

	} else { // 买入
		for k, v := range req.Items {
			if _, ok := caravan.Items[k]; !ok {
				caravan.Items[k] = &pb.BagInfo{
					Count: 0,
					Price: 0,
				}
			}
			bFound := false
			// 计算均价
			totla := caravan.Items[k].Count * caravan.Items[k].Price
			var price int32
			price = caravan.Goods[k].Price
			for _, v := range cityInfo.Special {
				if v == k {
					bFound = true
					break
				}
			}
			if !bFound {
				code = pb.ErrorCode_TrollCityUnSellItem // 城市不卖这个物品
				return
			}
			caravan.Items[k].Count += v

			totla += price * v
			caravan.Items[k].Price = totla / caravan.Items[k].Count
			// 同步更新该城市的 出售货物信息
			cityInfo.Count[k] += v
			if itemConf := this.configure.GetCaravanGoods(k); itemConf != nil { // 更新商店库存
				if cityInfo.Count[k] > itemConf.Goodsnum {
					code = pb.ErrorCode_TrollBuyMax // 商品数量不足
					return
				}
				update["city"] = caravan.City
				addScore -= price * v
			}
		}
		if this.module.ArrayBag(caravan, upperLimit) { // 背包满了
			code = pb.ErrorCode_TrollMaxItemCount
			return
		}
	}
	if code = this.module.DispenseRes(session, []*cfg.Gameatn{{
		A: "attr",
		T: "merchantmoney",
		N: addScore,
	}}, true); code != pb.ErrorCode_Success {
		this.module.Errorf("获得虚拟币失败:%d", code)
	}
	update["items"] = caravan.Items
	update["baglimit"] = caravan.Baglimit
	update["useCount"] = caravan.UseCount // 更新背包使用数量
	this.module.modelCaravan.modifyCaravanDataByObjId(session.GetUserId(), update)
	session.SendMsg(string(this.module.GetType()), "buyorsell", &pb.CaravanBuyOrSellResp{
		Data: caravan,
	})
	return
}