go_dreamfactory/modules/hero/api_drawCard.go

package hero

import (
	"crypto/rand"
	"go_dreamfactory/comm"
	"go_dreamfactory/pb"
	cfg "go_dreamfactory/sys/configure/structs"
	"math"
	"math/big"
	"strconv"

	"google.golang.org/protobuf/proto"
)

func (this *apiComp) DrawCardCheck(session comm.IUserSession, req *pb.HeroDrawCardReq) (code pb.ErrorCode) {
	if req.DrawType <= 0 { // 只能是单抽或10抽
		code = pb.ErrorCode_ReqParameterError
	}
	return
}

//抽卡
func (this *apiComp) DrawCard(session comm.IUserSession, req *pb.HeroDrawCardReq) (code pb.ErrorCode, data proto.Message) {
	var (
		szCards       []int32 // 最终抽到的卡牌
		totalWeight   int64   // 总权重
		curWeigth     int64   // 临时随机获得的权重
		drawTimes     int32   // 抽卡次数
		curStar4Count int32   // 当前4星没抽到的次数
		curStar5Count int32   // 当前5星没抽到的次数
		config4Count  int32   // 配置表中4星保底次数
		config5Count  int32   // 配置表中5星保底次数
		race          int32
	)
	szCards = make([]int32, 0)
	rsp := &pb.HeroDrawCardResp{}
	this.module.Debugf("当前4星抽卡没中次数:%d, 当前5星抽卡没中次数:%d", curStar4Count, curStar5Count)

	rst, _ := this.module.modelHero.GetUserRecord(session.GetUserId())
	if req.DrawType%2 == 0 { // 转成对应阵营信息 1~5
		race = int32((int(req.DrawType)) / 2)
	} else {
		race = int32(int(req.DrawType+1) / 2)
	}
	if race == comm.RacePt { // 普通卡池
		curStar4Count = rst.Race0.H4
		curStar5Count = rst.Race0.H5
	} else if race == comm.RaceZr { // 灼热
		curStar4Count = rst.Race1.H4
		curStar5Count = rst.Race1.H5
	} else if race == comm.RaceYd { // 涌动
		curStar4Count = rst.Race2.H4
		curStar5Count = rst.Race2.H5
	} else if race == comm.RaceHx { // 呼啸
		curStar4Count = rst.Race3.H4
		curStar5Count = rst.Race3.H5
	} else if race == comm.RaceSy { // 闪耀
		curStar4Count = rst.Race4.H4
		curStar5Count = rst.Race4.H5
	}
	// 获取配置文件的权重信息
	_conf, err := this.module.configure.GetHeroDrawConfig(race)
	if err != nil {
		code = pb.ErrorCode_DrawCardTypeNotFound // 抽卡类型不匹配
		return
	}

	_costConf, err := this.module.configure.GetDrawCostConfigByID(req.DrawType) // 抽卡消耗
	if err != nil {
		code = pb.ErrorCode_ConfigNoFound
		return
	}
	config4Count = _costConf.Floor4 // 4星保底次数
	config5Count = _costConf.Floor5 // 5星保底次数
	if config4Count == 0 {          // 数量为0 设置最大
		config5Count = math.MaxInt32
	}
	if config5Count == 0 {
		config4Count = math.MaxInt32
	}
	sz := make([]*cfg.Game_atn, 0)
	sz = append(sz, _costConf.Cost)
	code = this.module.CheckRes(session, sz) // 消耗校验
	if code != pb.ErrorCode_Success {
		return
	}

	drawTimes = _costConf.Count // 抽卡次数
	for _, v := range _conf {
		totalWeight += int64(v.Weight) // 统计所有权重
	}
	//this.module.configure.GetDrawUpDrawConfig()
	drawTimes = 1
	for i := 0; i < int(drawTimes); i++ {
		n, _ := rand.Int(rand.Reader, big.NewInt(totalWeight)) // [0,totalWeight)
		for _, v := range _conf {
			curWeigth += int64(v.Weight)
			if curWeigth < n.Int64() { // 命中
				// 获取当前星级
				_getCardCfg := this.module.configure.GetHero(v.Id) //获取的英雄信息
				if _getCardCfg != nil {
					continue
				}

				if _getCardCfg.Star == 4 { // 当抽取到的英雄是4星的时候 清除 该类型的保底次数
					curStar4Count = 0
					continue
				} else if _getCardCfg.Star == 5 { // 当抽取到的英雄是5星的时候 清除 该类型的保底次数
					curStar5Count = 0 // 清0
					continue
				}
				curStar4Count++
				curStar5Count++
				bGet := false
				// 达标保底次数
				if curStar4Count >= config4Count {
					//_costConf.Floor4cards
					_bd, err := this.module.configure.GetHeroDrawConfig(_costConf.Floor4cards)
					if err != nil && len(_bd) != 0 {
						var _totalW int64 // 总权重
						var _tmpW int64   // 临时权重
						for _, v := range _bd {
							_totalW += int64(v.Weight)
						}
						// 随机权重
						n, _ := rand.Int(rand.Reader, big.NewInt(_totalW))
						for _, v := range _bd {
							_tmpW += int64(v.Weight)
							if n.Int64() > _tmpW { // 种族保底卡池命中
								szCards = append(szCards, v.Id)
								bGet = true
								break
							}
						}
					}
				} else if curStar5Count >= config5Count {
					_bd, err := this.module.configure.GetHeroDrawConfig(_costConf.Floor5cards)
					if err != nil && len(_bd) != 0 {
						var _totalW int64 // 总权重
						var _tmpW int64   // 临时权重
						for _, v := range _bd {
							_totalW += int64(v.Weight)
						}
						// 随机权重
						n, _ := rand.Int(rand.Reader, big.NewInt(_totalW))
						for _, v := range _bd {
							_tmpW += int64(v.Weight)
							if n.Int64() > _tmpW { // 种族保底卡池命中
								szCards = append(szCards, v.Id)
								bGet = true
								break
							}
						}
					}
				}
				if !bGet {
					szCards = append(szCards, v.Id)
				}
			}
		}
	}
	raceData := &pb.Floor{
		H4: curStar4Count,
		H5: curStar5Count,
	}
	// 更新record 配置信息
	update := map[string]interface{}{}

	update["race"+strconv.Itoa(int(race)-1)] = raceData
	this.module.modelHero.ChangeUserRecord(session.GetUserId(), update)
	// 消耗道具
	code = this.module.ConsumeRes(session, sz, true)
	if code != pb.ErrorCode_Success {
		return
	}
	if err := this.module.modelHero.createMultiHero(session.GetUserId(), szCards...); err != nil {
		code = pb.ErrorCode_HeroCreate
		return
	}

	rsp.Heroes = szCards
	session.SendMsg(string(this.module.GetType()), DrawCard, rsp)
	return
}