feat(all): implement SkyWay progression, battles and dispatch; fix field reward position ordering

go/internal/server/app/design.go

@@ -3,7 +3,11 @@ package app
 import (
 	"bd2server/internal/server/design/gamedata"
 	"bd2server/internal/server/domain/battle/monsterhunt"
+	"bd2server/internal/server/domain/command"
 	"bd2server/internal/server/domain/commerce"
+	"bd2server/internal/server/domain/world"
+	"bd2server/internal/server/protocol/wire"
+	"encoding/binary"
 	"fmt"
 )
 
@@ -15,7 +19,8 @@ type designCatalog struct {
 	fieldBuffs               map[uint64]gamedata.FieldBuffDesign
 	recovery                 *gamedata.PackRecoveryPolicy
 	researchCharacters       map[uint64]bool
-	overwhelmSky             []gamedata.SkyWayOverwhelmRule
+	skyway                   *gamedata.SkyWayDesign
+	skywaySchedules          []world.SkyWaySchedule
 	eventPlay                *gamedata.EventPlayCatalog
 	monsterHunt              *monsterhunt.Rules
 	presetDesign             *gamedata.PresetDesign
@@ -345,7 +350,50 @@ func loadDesign(c *configuration, seeds *seedCatalog) (*designCatalog, error) {
 	if err != nil {
 		return nil, err
 	}
-	d.overwhelmSky, err = gamedata.LoadSkyWayOverwhelm(gameData, gameDataVersion)
+	d.skyway, err = gamedata.LoadSkyWayDesign(gameData, gameDataVersion)
+	if err != nil {
+		return nil, err
+	}
+	_, schedule, handled, err := seeds.defaults.Handle(command.Context{}, "/SkyWayScheduleInfo", wire.AppendVarint(nil, 1, 1))
+	if err != nil || !handled {
+		return nil, fmt.Errorf("load SkyWay schedule policy: %w", err)
+	}
+	err = wire.Walk(schedule, func(f wire.Field) error {
+		if f.Number != 1 || f.Type != 2 {
+			return fmt.Errorf("invalid SkyWay schedule seed")
+		}
+		var row world.SkyWaySchedule
+		row.Group, _, err = wire.Varint(f.Value, 1)
+		if err != nil {
+			return err
+		}
+		row.Bonus, _, err = wire.Varint(f.Value, 3)
+		if err != nil {
+			return err
+		}
+		err = wire.Walk(f.Value, func(day wire.Field) error {
+			if day.Number != 2 {
+				return nil
+			}
+			if day.Type != 0 && day.Type != 2 {
+				return fmt.Errorf("invalid SkyWay day seed")
+			}
+			for rest := day.Value; len(rest) > 0; {
+				v, n := binary.Uvarint(rest)
+				if n <= 0 {
+					return wire.ErrMalformed
+				}
+				row.Days = append(row.Days, v)
+				rest = rest[n:]
+			}
+			return nil
+		})
+		if err != nil {
+			return err
+		}
+		d.skywaySchedules = append(d.skywaySchedules, row)
+		return nil
+	})
 	if err != nil {
 		return nil, err
 	}

go/internal/server/app/player_events.go

@@ -180,5 +180,11 @@ func (p *playerAssembly) events(ctx command.Context) error {
 		return fmt.Errorf("restore recorded achievement history: %w", err)
 	}
 	p.eventTasksService.AttachInventoryProvider(&eventtasks.InventoryProjection{Items: p.ownedItems, Equipment: p.ownedEquipment, Costumes: p.collection, StateVersion: p.stateRepository.ObservationVersion})
+	p.worldService.AttachSkyWayProgress(p.eventTasksService.RecordSkyWayClear, func(ctx command.Context, group uint64) error {
+		return p.missionService.RecordEvent(ctx, 227, group, 1, p.worldService.MissionsUnlocked)
+	})
+	p.huntingService.AttachDispatchProgress(func(ctx command.Context, count uint64) error {
+		return p.missionService.RecordEvent(ctx, 23, 0, count, p.worldService.MissionsUnlocked)
+	})
 	return nil
 }

go/internal/server/app/player_gameplay.go

@@ -78,6 +78,12 @@ func (p *playerAssembly) gameplay(ctx command.Context) error {
 		return fmt.Errorf("load event economy: %w", err)
 	}
 	p.eventEconomy.AttachHuntingAP(p.huntingService)
+	if err = p.worldService.AttachSkyWay(ctx, p.design.skyway, p.gameplayStore, p.eventEconomy, p.huntingService, p.design.skywaySchedules, p.design.rewardGraph); err != nil {
+		return fmt.Errorf("attach SkyWay: %w", err)
+	}
+	p.battleService.AttachSkyWay(p.worldService)
+	p.huntingService.AttachDispatchEligibility(p.worldService.SkyWayDispatchEligibility)
+	p.huntingService.AttachSkyWayDispatch(p.worldService.SkyWayDispatchCosts, p.worldService.SkyWayDispatchExchange, p.worldService.SkyWayDispatchBonus)
 	p.talentUseService, err = roster.NewTalentUseService(p.design.talentUseDesign, p.gameplayStore, p.worldService.CharacterService(), p.ownedItems, p.wallet, p.eventEconomy)
 	if err != nil {
 		return fmt.Errorf("load field talent state: %w", err)
@@ -91,7 +97,7 @@ func (p *playerAssembly) gameplay(ctx command.Context) error {
 	p.worldService.AttachTalentPackInfo(p.talentUseService.PackInfo)
 	p.worldService.AttachOverwhelmAuthorization(p.talentUseService.ConsumeOverwhelm)
 	p.worldService.AttachOverwhelmHunting(p.huntingService)
-	if err := p.worldService.AttachOverwhelmDesign(p.design.source, p.design.overwhelmSky); err != nil {
+	if err := p.worldService.AttachOverwhelmDesign(p.design.source); err != nil {
 		return fmt.Errorf("attach overwhelm design: %w", err)
 	}
 	p.talentUseService.AttachEffect(4, p.worldService.ApplyTalentFieldAbsorb)

go/internal/server/app/player_session.go

@@ -17,6 +17,7 @@ import (
 
 func (p *playerAssembly) session(ctx command.Context) error {
 	p.handlers = []session.Handler{
+		p.worldService,
 		p.progressState,
 		p.cashService,
 		p.cashBonuses,
@@ -35,7 +36,6 @@ func (p *playerAssembly) session(ctx command.Context) error {
 		p.battleService,
 		p.huntingService,
 		p.monsterHuntService,
-		p.worldService,
 		p.worldService.CharacterService(),
 		p.progressState,
 		p.deckStateStore,

go/internal/server/app/skyway_integration_test.go

@@ -0,0 +1,364 @@
+//go:build integration
+
+package app
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"testing"
+
+	"bd2server/internal/server/design/gamedata"
+	"bd2server/internal/server/domain/command"
+	"bd2server/internal/server/protocol/wire"
+)
+
+type skyWayPlayerScenario struct {
+	factory  *PlayerFactory
+	owner    *playerInstance
+	account  string
+	sequence uint64
+	blue     []byte
+}
+type skyWayAssets struct{ gold, rice, torch, crystal uint64 }
+
+func newSkyWayPlayerScenario(t *testing.T) *skyWayPlayerScenario {
+	t.Helper()
+	factory, accounts := newIntegrationFactory(t)
+	for i := range factory.design.skywaySchedules {
+		if factory.design.skywaySchedules[i].Group == 1 {
+			factory.design.skywaySchedules[i].Bonus = 100
+			factory.design.skywaySchedules[i].Days = []uint64{0, 1, 2, 3, 4, 5, 6}
+		}
+	}
+	owner, err := factory.open(accounts[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := &skyWayPlayerScenario{factory: factory, owner: owner, account: accounts[0]}
+	t.Cleanup(func() {
+		if s.owner != nil {
+			if err := s.owner.Close(); err != nil {
+				t.Error(err)
+			}
+		}
+	})
+	tx, err := owner.repository.BeginCommand(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = tx.Rollback() }()
+	ctx := command.Context{Identity: command.Identity{AccountID: s.account, SessionID: "skyway-client"}, State: tx}
+	for _, character := range owner.assembly.worldService.CharacterService().RawAll() {
+		costume, owned := owner.assembly.collection.CostumeByIndex(character.UseCostume)
+		if !owned || costume.UseChar != character.InvenIndex || character.HP == 0 {
+			continue
+		}
+		s.blue = wire.AppendVarint(nil, 1, 1)
+		for field, value := range map[int]uint64{2: character.InvenIndex, 3: character.ID, 4: character.HP, 5: character.Level, 6: character.UseCostume, 7: costume.ID} {
+			s.blue = wire.AppendVarint(s.blue, field, value)
+		}
+		break
+	}
+	if s.blue == nil {
+		t.Fatal("SkyWay scenario requires an owned living battle participant")
+	}
+	if _, err := owner.assembly.ownedItems.GrantOnce(ctx, "skyway-entry-ticket", []gamedata.BattleReward{{Type: 19, ID: 13004, Count: 1}}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := owner.assembly.eventEconomy.Apply(ctx, "skyway-test-ap", nil, []gamedata.Reward{{Type: 21, Count: 200}, {Type: 32, Count: 200}}); err != nil {
+		t.Fatal(err)
+	}
+	if err := tx.Commit(); err != nil {
+		t.Fatal(err)
+	}
+	beforePurchase := s.assets(t)
+	purchase := s.request(3004)
+	s.call(t, "/PackBuy", purchase)
+	bought := beforePurchase
+	bought.rice += 10
+	if s.assets(t) != bought {
+		t.Fatal("the first SkyWay pack purchase did not credit its ten rice")
+	}
+	s.call(t, "/PackBuy", purchase)
+	if s.assets(t) != bought {
+		t.Fatal("pack purchase retry duplicated rice")
+	}
+	s.call(t, "/PackInGameInfo", s.request(3004))
+	for _, step := range []struct {
+		quest uint64
+		talks []uint64
+	}{{1, []uint64{11}}, {2, []uint64{21, 22}}, {3, []uint64{31}}} {
+		update := s.request(step.quest, 3004)
+		for _, talk := range step.talks {
+			update = wire.AppendVarint(update, 4, talk)
+		}
+		s.call(t, "/QuestUpdate", update)
+		clear := s.request(step.quest, 3004)
+		response := s.call(t, "/QuestClear", clear)
+		if step.quest == 3 {
+			complete := false
+			for _, row := range appRows(response, 11) {
+				if appValue(row, 1) == 3004 && appValue(row, 3) == 1 {
+					complete = true
+				}
+			}
+			if !complete {
+				t.Fatal("final dialogue did not unlock dispatch in the client's pack cache")
+			}
+		}
+		bought.gold += 500
+		if s.assets(t) != bought {
+			t.Fatal("introductory dialogue did not settle its authored gold")
+		}
+		s.call(t, "/QuestClear", clear)
+		if s.assets(t) != bought {
+			t.Fatal("introductory dialogue retry duplicated rewards")
+		}
+	}
+	return s
+}
+func (s *skyWayPlayerScenario) request(values ...uint64) []byte {
+	s.sequence++
+	raw := wire.AppendVarint(nil, 1, s.sequence)
+	for i, value := range values {
+		raw = wire.AppendVarint(raw, i+2, value)
+	}
+	return raw
+}
+func (s *skyWayPlayerScenario) execute(path string, raw []byte) ([]byte, error) {
+	c := registryCommand(s.account, fmt.Sprintf("skyway-%s-%x", path, raw), path, raw)
+	c.Identity.SessionID = "skyway-client"
+	reply, err := s.owner.Execute(context.Background(), c)
+	if err != nil {
+		return nil, err
+	}
+	if len(reply.Responses) != 1 {
+		return nil, fmt.Errorf("%s has no response", path)
+	}
+	return reply.Responses[0].Body, nil
+}
+func (s *skyWayPlayerScenario) call(t *testing.T, path string, raw []byte) []byte {
+	t.Helper()
+	body, err := s.execute(path, raw)
+	if err != nil {
+		t.Fatalf("%s: %v", path, err)
+	}
+	return body
+}
+func (s *skyWayPlayerScenario) assets(t *testing.T) skyWayAssets {
+	t.Helper()
+	tx, err := s.owner.repository.BeginCommand(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = tx.Rollback() }()
+	ctx := command.Context{Identity: command.Identity{AccountID: s.account, SessionID: "skyway-client"}, State: tx}
+	free, bonus, err := s.owner.assembly.huntingService.HuntingAP(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	extra, err := s.owner.assembly.eventEconomy.AdditionalCurrencies(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	out := skyWayAssets{gold: s.owner.assembly.wallet.Snapshot(ctx).Gold, rice: free + bonus, torch: extra[36] + extra[37]}
+	for _, item := range s.owner.assembly.ownedItems.All(ctx) {
+		if item.Type == 8 && item.ID == 111 {
+			out.crystal += item.Count
+		}
+	}
+	return out
+}
+func (s *skyWayPlayerScenario) reject(t *testing.T, path string, raw []byte) {
+	t.Helper()
+	before := s.assets(t)
+	if _, err := s.execute(path, raw); err == nil {
+		t.Fatalf("%s accepted an unavailable encounter", path)
+	}
+	if after := s.assets(t); after != before {
+		t.Fatalf("rejected %s changed assets: before=%+v after=%+v", path, before, after)
+	}
+}
+func (s *skyWayPlayerScenario) battle(t *testing.T, monster, mode, result uint64) ([]byte, []byte) {
+	t.Helper()
+	s.call(t, "/BattleEnter", s.request(0, monster, monster, mode))
+	s.call(t, "/BattleStart", wire.AppendBytes(s.request(monster), 5, s.blue))
+	end := s.request(result)
+	return s.call(t, "/BattleEnd", end), end
+}
+func (s *skyWayPlayerScenario) maximum(t *testing.T, group uint64) int64 {
+	t.Helper()
+	info := s.call(t, "/SkyWayInfo", s.request(3004))
+	for _, row := range appRows(info, 1) {
+		if appValue(row, 2) == group {
+			return int64(appValue(row, 4))
+		}
+	}
+	t.Fatalf("SkyWayInfo omitted selected group %d", group)
+	return -1
+}
+func (s *skyWayPlayerScenario) reopen(t *testing.T) {
+	t.Helper()
+	if err := s.owner.repository.RequireDomains("bootstrap", "characters", "collection", "deck", "equipment", "items", "mail", "missions", "progress", "wallet"); err != nil {
+		t.Fatal(err)
+	}
+	problems, err := s.owner.repository.Validate()
+	if err != nil || len(problems) != 0 {
+		t.Fatalf("persisted player validation: %v %v", problems, err)
+	}
+	if err := s.owner.Close(); err != nil {
+		t.Fatal(err)
+	}
+	s.owner = nil
+	s.owner, err = s.factory.open(s.account)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// GameData group1/10 has five 1-rice encounters (1000 gold each) and a
+// 1-rice boss (1500 gold). The configured 100% policy doubles concrete payouts.
+func TestSkyWayGoblinBossUnlockAndRepeatedRunsConserveRewards(t *testing.T) {
+	s := newSkyWayPlayerScenario(t)
+	initial := s.assets(t)
+	if s.maximum(t, 1) != -1 {
+		t.Fatal("unplayed dungeon was advertised as cleared")
+	}
+	s.reject(t, "/SkyWayEnter", s.request(3004, 1, 11, 0))
+	enter := s.request(3004, 1, 10, 0)
+	enterReply := s.call(t, "/SkyWayEnter", enter)
+	if s.assets(t) != initial {
+		t.Fatal("entering a dungeon spent battle AP")
+	}
+	s.reject(t, "/BattleEnter", s.request(0, 2005, 2005, 9))
+	s.battle(t, 2001, 9, 2)
+	if s.assets(t) != initial {
+		t.Fatal("losing the encounter charged AP or granted gold")
+	}
+	for i, monster := range []uint64{2001, 2002, 2003, 2004, 2006} {
+		var response, end []byte
+		if i == 0 {
+			s.call(t, "/BattleRetry", s.request(monster))
+			if s.assets(t) != initial {
+				t.Fatal("retrying a lost battle charged AP before victory")
+			}
+			s.call(t, "/BattleStart", wire.AppendBytes(s.request(monster), 5, s.blue))
+			end = s.request(1)
+			response = s.call(t, "/BattleEnd", end)
+		} else {
+			response, end = s.battle(t, monster, 9, 1)
+		}
+		expected := initial
+		expected.gold += uint64(i+1) * 2000
+		expected.rice -= uint64(i + 1)
+		if after := s.assets(t); after != expected {
+			t.Fatalf("victory assets: got %+v want %+v", after, expected)
+		}
+		if retry := s.call(t, "/BattleEnd", end); !bytes.Equal(response, retry) || s.assets(t) != expected {
+			t.Fatal("settlement retry charged or rewarded the player twice")
+		}
+		if i == 1 {
+			s.reopen(t)
+			command := registryCommand(s.account, "uncached-enter-retry", "/SkyWayEnter", enter)
+			command.Identity.SessionID = "skyway-client"
+			replay, err := s.owner.Execute(context.Background(), command)
+			if err != nil || len(replay.Responses) != 1 || !bytes.Equal(replay.Responses[0].Body, enterReply) || s.assets(t) != expected {
+				t.Fatalf("persisted native entry retry reset or charged the dungeon: %v", err)
+			}
+		}
+	}
+	if s.maximum(t, 1) != -1 {
+		t.Fatal("normal encounters unlocked the next difficulty before the boss")
+	}
+	s.battle(t, 2005, 9, 1)
+	afterCycle := initial
+	afterCycle.gold += 13000
+	afterCycle.rice -= 6
+	if s.assets(t) != afterCycle || s.maximum(t, 1) != 0 {
+		t.Fatal("boss did not settle one complete run or unlock hard difficulty")
+	}
+	s.reopen(t)
+	if s.assets(t) != afterCycle || s.maximum(t, 1) != 0 {
+		t.Fatal("reopen lost completed dungeon assets or difficulty")
+	}
+	s.battle(t, 2001, 9, 1)
+	repeated := afterCycle
+	repeated.gold += 2000
+	repeated.rice--
+	if s.assets(t) != repeated {
+		t.Fatal("the new run reused the preceding run's reward identity")
+	}
+	s.call(t, "/SkyWayEnter", s.request(3004, 1, 11, 0))
+	if s.assets(t) != repeated {
+		t.Fatal("selecting the unlocked hard dungeon spent battle AP")
+	}
+	safe := wire.AppendBytes(s.request(3004), 3, []byte(`{"MapId":30021,"PlayerPosition":{"x":0,"y":0,"z":0},"ColleaguePositions":[]}`))
+	s.call(t, "/SaveUserPosition", safe)
+	s.reject(t, "/BattleEnter", s.request(0, 2011, 2011, 9))
+	s.reopen(t)
+	if s.maximum(t, 1) != 0 || s.assets(t) != repeated {
+		t.Fatal("leaving the dungeon discarded permanent progress or assets")
+	}
+	s.call(t, "/SkyWayEnter", s.request(3004, 1, 11, 0))
+}
+
+// Fire normal encounters and boss each grant resource111 x2 and cost one torch;
+// the instant two-run dispatch costs twelve torches and grants twenty-four.
+func TestSkyWayCrystalDispatchUsesTorchesAndSurvivesRetryAndReopen(t *testing.T) {
+	s := newSkyWayPlayerScenario(t)
+	initial := s.assets(t)
+	dispatch := s.request(2, 7, 2)
+	s.reject(t, "/HuntDispatch", dispatch)
+	s.call(t, "/SkyWayEnter", s.request(3004, 3, 30, 0))
+	s.battle(t, 4001, 11, 2)
+	if s.assets(t) != initial {
+		t.Fatal("lost crystal battle spent torches or awarded crystals")
+	}
+	for _, monster := range []uint64{4001, 4002, 4003, 4004, 4006, 4005} {
+		s.battle(t, monster, 11, 1)
+	}
+	afterCycle := initial
+	afterCycle.torch -= 6
+	afterCycle.crystal += 12
+	if s.assets(t) != afterCycle || s.maximum(t, 3) != 0 {
+		t.Fatal("crystal dungeon charged rice or failed to persist its rewards")
+	}
+	dispatch = s.request(2, 7, 2)
+	reply := s.call(t, "/HuntDispatch", dispatch)
+	afterDispatch := afterCycle
+	afterDispatch.torch -= 12
+	afterDispatch.crystal += 24
+	if s.assets(t) != afterDispatch {
+		t.Fatalf("instant dispatch charged the wrong currency or quantity: %+v want %+v", s.assets(t), afterDispatch)
+	}
+	if repeated := s.call(t, "/HuntDispatch", dispatch); !bytes.Equal(reply, repeated) || s.assets(t) != afterDispatch {
+		t.Fatal("dispatch retry duplicated rewards or torch charges")
+	}
+	s.reopen(t)
+	if s.assets(t) != afterDispatch || s.maximum(t, 3) != 0 {
+		t.Fatal("reopen lost crystal rewards, torch balance or dispatch qualification")
+	}
+	if repeated := s.call(t, "/HuntDispatch", dispatch); !bytes.Equal(reply, repeated) || s.assets(t) != afterDispatch {
+		t.Fatal("reopened dispatch duplicated assets")
+	}
+	s.call(t, "/HuntDispatchStart", s.request(2, 7, 2))
+	reserved := afterDispatch
+	reserved.torch -= 12
+	if s.assets(t) != reserved {
+		t.Fatal("timed dispatch did not reserve the correct torch cost")
+	}
+	preview := s.call(t, "/HuntDispatchRewardPreview", s.request(2, 7))
+	if appValue(preview, 1) != 0 || s.assets(t) != reserved {
+		t.Fatal("preview completed an unplayed dispatch or issued assets")
+	}
+	cancel := s.request(2, 7)
+	cancelReply := s.call(t, "/HuntDispatchEnd", cancel)
+	if s.assets(t) != afterDispatch {
+		t.Fatal("cancelling unplayed runs did not refund exactly the reserved torches")
+	}
+	s.reopen(t)
+	if retry := s.call(t, "/HuntDispatchEnd", cancel); !bytes.Equal(retry, cancelReply) || s.assets(t) != afterDispatch {
+		t.Fatal("reopened cancellation refunded torches twice")
+	}
+}

go/internal/server/design/gamedata/dispatch.go

@@ -9,7 +9,7 @@ import (
 
 type DispatchDesign struct {
 	Group, ID, Pack, Difficulty, TypeGroup, TypeID, AP, ClearTime, Growth uint64
-	GroundID                                                              uint64
+	GroundID, APType                                                      uint64
 	Rewards                                                               []BattleReward
 	boxes                                                                 map[uint64]*dispatchGroup
 }
@@ -63,6 +63,7 @@ func LoadDispatchDesign(root, version string, group, id uint64) (*DispatchDesign
 		}
 		ids, err = packedInts(raw, 15)
 		boss, _ = optionalScalar(raw, 4)
+		d.APType, _ = optionalScalar(raw, 1)
 	}
 	if err != nil {
 		return nil, err

go/internal/server/design/gamedata/field_pack.go

@@ -47,7 +47,7 @@ func loadFieldPacks(db *sql.DB) (map[int]FieldPack, error) {
 				values[field] = v[0]
 			}
 		}
-		if values[55] != 3 && values[55] != 10 {
+		if values[55] != 3 && values[55] != 5 && values[55] != 10 {
 			continue
 		}
 		if id <= 0 || values[25] != uint64(id) {

go/internal/server/design/gamedata/overwhelm.go

@@ -4,51 +4,6 @@ import (
 	"fmt"
 )
 
-type SkyWayOverwhelmRule struct {
-	Group, Map, APType, Boss, BossAP uint64
-	Monsters, AP                     []uint64
-}
-
-func LoadSkyWayOverwhelm(root, version string) ([]SkyWayOverwhelmRule, error) {
-	db, done, e := openStatDatabase(root, version)
-	if e != nil {
-		return nil, e
-	}
-	defer done()
-	rows, e := db.Query("SELECT ProtoBuf FROM SkyWayFieldTable")
-	if e != nil {
-		return nil, e
-	}
-	defer func() { _ = rows.Close() }()
-	var out []SkyWayOverwhelmRule
-	for rows.Next() {
-		var b []byte
-		if e = rows.Scan(&b); e != nil {
-			return nil, e
-		}
-		r := SkyWayOverwhelmRule{}
-		for f, p := range map[int]*uint64{10: &r.Group, 13: &r.Map, 1: &r.APType, 4: &r.Boss, 3: &r.BossAP} {
-			*p, e = optionalScalar(b, f)
-			if e != nil {
-				return nil, e
-			}
-		}
-		r.Monsters, e = packedInts(b, 15)
-		if e != nil {
-			return nil, e
-		}
-		r.AP, e = packedInts(b, 14)
-		if e != nil {
-			return nil, e
-		}
-		if len(r.Monsters) != len(r.AP) {
-			return nil, fmt.Errorf("gamedata: malformed skyway AP mapping")
-		}
-		out = append(out, r)
-	}
-	return out, rows.Err()
-}
-
 type OverwhelmQuestRule struct {
 	Type, Count uint64
 	Targets     []uint64

go/internal/server/design/gamedata/skyway.go

@@ -0,0 +1,157 @@
+package gamedata
+
+import "fmt"
+
+type SkyWayStage struct {
+	Group, ID, Difficulty, Map, Point, APType, Boss, BossAP, PositionGroup uint64
+	Monsters, AP                                                           []uint64
+}
+
+type SkyWayDesign struct {
+	Pack     int
+	Stages   []SkyWayStage
+	Monsters map[uint64]HuntingMonster
+	SafeMaps map[int]bool
+}
+
+func LoadSkyWayDesign(root, version string) (*SkyWayDesign, error) {
+	db, done, err := openStatDatabase(root, version)
+	if err != nil {
+		return nil, err
+	}
+	defer done()
+	d := &SkyWayDesign{Monsters: map[uint64]HuntingMonster{}, SafeMaps: map[int]bool{}}
+	rows, err := db.Query("SELECT ProtoBuf FROM SkyWayFieldTable ORDER BY groupId,difficulty")
+	if err != nil {
+		return nil, err
+	}
+	for rows.Next() {
+		var raw []byte
+		if err = rows.Scan(&raw); err != nil {
+			_ = rows.Close()
+			return nil, err
+		}
+		var s SkyWayStage
+		for f, p := range map[int]*uint64{1: &s.APType, 3: &s.BossAP, 4: &s.Boss, 6: &s.Difficulty, 10: &s.Group, 12: &s.ID, 13: &s.Map, 17: &s.Point, 18: &s.PositionGroup} {
+			*p, err = optionalScalar(raw, f)
+			if err != nil {
+				_ = rows.Close()
+				return nil, err
+			}
+		}
+		s.Monsters, err = packedInts(raw, 15)
+		if err != nil {
+			_ = rows.Close()
+			return nil, err
+		}
+		s.AP, err = packedInts(raw, 14)
+		if err != nil {
+			_ = rows.Close()
+			return nil, err
+		}
+		if s.Group == 0 || s.Group > 7 || s.ID == 0 || s.Boss == 0 || s.Map == 0 || len(s.AP) != len(s.Monsters) || (s.APType != 1 && s.APType != 2) {
+			_ = rows.Close()
+			return nil, fmt.Errorf("gamedata: invalid SkyWay stage")
+		}
+		d.Stages = append(d.Stages, s)
+	}
+	if err = rows.Err(); err != nil {
+		_ = rows.Close()
+		return nil, err
+	}
+	if err = rows.Close(); err != nil {
+		return nil, err
+	}
+	for _, s := range d.Stages {
+		var pack int
+		if err = db.QueryRow("SELECT packId FROM MapTable WHERE id=?", s.Map).Scan(&pack); err != nil {
+			return nil, err
+		}
+		if d.Pack != 0 && d.Pack != pack {
+			return nil, fmt.Errorf("gamedata: SkyWay maps span packs")
+		}
+		d.Pack = pack
+	}
+	if d.Pack == 0 {
+		return nil, fmt.Errorf("gamedata: no SkyWay pack")
+	}
+	rows, err = db.Query("SELECT id,ProtoBuf FROM MapTable WHERE packId=?", d.Pack)
+	if err != nil {
+		return nil, err
+	}
+	for rows.Next() {
+		var id int
+		var raw []byte
+		if err = rows.Scan(&id, &raw); err != nil {
+			_ = rows.Close()
+			return nil, err
+		}
+		typ, e := optionalScalar(raw, 22)
+		if e != nil {
+			_ = rows.Close()
+			return nil, e
+		}
+		if typ == 0 {
+			d.SafeMaps[id] = true
+		}
+	}
+	if err = rows.Err(); err != nil {
+		_ = rows.Close()
+		return nil, err
+	}
+	if err = rows.Close(); err != nil {
+		return nil, err
+	}
+	pdb, release, err := openPackDatabase(root, version, d.Pack)
+	if err != nil {
+		return nil, err
+	}
+	defer release()
+	for _, s := range d.Stages {
+		for _, id := range append(append([]uint64(nil), s.Monsters...), s.Boss) {
+			if _, ok := d.Monsters[id]; ok {
+				continue
+			}
+			var raw []byte
+			if err = pdb.QueryRow("SELECT ProtoBuf FROM FieldMonsterTable WHERE id=?", id).Scan(&raw); err != nil {
+				return nil, err
+			}
+			m := HuntingMonster{ID: id, Rewards: map[uint64][]BattleReward{}}
+			m.Type, err = optionalScalar(raw, 30)
+			if err != nil {
+				return nil, err
+			}
+			m.Decks, err = packedInts(raw, 2)
+			if err != nil || len(m.Decks) == 0 {
+				return nil, fmt.Errorf("gamedata: SkyWay monster missing decks")
+			}
+			for _, deck := range m.Decks {
+				if err = pdb.QueryRow("SELECT ProtoBuf FROM BattleDeckTable WHERE id=?", deck).Scan(&raw); err != nil {
+					return nil, err
+				}
+				rs, e := parallelRewards(raw, 36, 34, 33)
+				if e != nil {
+					return nil, e
+				}
+				for _, r := range rs {
+					m.Rewards[deck] = append(m.Rewards[deck], BattleReward(r))
+				}
+			}
+			d.Monsters[id] = m
+		}
+	}
+	return d, nil
+}
+
+func (d *SkyWayDesign) Stage(group, id uint64) (SkyWayStage, bool) {
+	for _, s := range d.Stages {
+		if s.Group == group && s.ID == id {
+			return s, true
+		}
+	}
+	return SkyWayStage{}, false
+}
+
+// Battle modes are the current protocol's contiguous SKY_WAY enum family.
+func SkyWayMode(group uint64) uint64 { return 8 + group }
+func IsSkyWayMode(mode uint64) bool  { return mode >= 9 && mode <= 15 }

go/internal/server/design/gamedata/story_catalog.go

@@ -70,7 +70,7 @@ func loadStoryCatalog(db *sql.DB) (*StoryCatalog, error) {
 			_ = rows.Close()
 			return nil, err
 		}
-		if kind != 0 && kind != 1000 {
+		if kind != 0 && kind != 5 && kind != 1000 {
 			continue
 		}
 		protoID, err := read(25)

go/internal/server/domain/battle/battle.go

@@ -26,6 +26,7 @@ type Service struct {
 	onMonsterWin       func(ctx command.Context) error
 	commitHealth       func(ctx command.Context, _ map[uint64]uint64) error
 	hunting            HuntingRuntime
+	skyway             SkyWayRuntime
 	monsterHunt        MonsterHuntRuntime
 	eventBattles       []EventBattleRuntime
 	fieldMonsters      FieldMonsterRuntime
@@ -83,6 +84,14 @@ type HuntingRuntime interface {
 	CompleteBattle(ctx command.Context, pack int, mode, monster, deck uint64, receipt string) ([]byte, [][]byte, error)
 }
 
+type SkyWayRuntime interface {
+	SkyWayBeginBattle(command.Context, int, uint64, uint64, uint64) (string, error)
+	SkyWayCompleteBattle(command.Context, int, uint64, uint64, uint64, string, string) ([]byte, []byte, [][]byte, error)
+	SkyWayBattleStarted(command.Context, uint64, string) error
+}
+
+func (s *Service) AttachSkyWay(runtime SkyWayRuntime) { s.skyway = runtime }
+
 const huntingGroundMode = 5
 
 func (s *Service) AttachHunting(runtime HuntingRuntime) {
@@ -91,6 +100,7 @@ func (s *Service) AttachHunting(runtime HuntingRuntime) {
 
 type battleState struct {
 	entered       bool
+	retryable     bool
 	index         uint64
 	round         uint64
 	monster       uint64

go/internal/server/domain/battle/hunting/dispatch.go

@@ -2,6 +2,7 @@ package hunting
 
 import (
 	"bd2server/internal/server/design/gamedata"
+	"bd2server/internal/server/domain/command"
 	"time"
 )
 
@@ -20,11 +21,18 @@ type dispatchState struct {
 	Receipts map[string]dispatchReceipt `json:"receipts"`
 }
 
-func (s *Service) AttachDispatchEligibility(check func(*gamedata.DispatchDesign) error) {
+func (s *Service) AttachDispatchEligibility(check func(command.Context, *gamedata.DispatchDesign) error) {
 
 	s.dispatchEligibility = check
 }
 
+func (s *Service) AttachSkyWayDispatch(costs func(command.Context, *gamedata.DispatchDesign, uint64) ([]gamedata.Reward, error), exchange func(command.Context, string, []gamedata.Reward, []gamedata.Reward) ([]byte, error), bonus func(*gamedata.DispatchDesign, []gamedata.BattleReward) ([]gamedata.BattleReward, error)) {
+	s.dispatchCosts, s.dispatchExchange, s.dispatchBonus = costs, exchange, bonus
+}
+func (s *Service) AttachDispatchProgress(progress func(command.Context, uint64) error) {
+	s.dispatchProgress = progress
+}
+
 func dispatchPlayed(j dispatchJob, seconds uint64) uint64 {
 	if seconds == 0 {
 		return j.Count

go/internal/server/domain/battle/hunting/hunting.go

@@ -46,7 +46,11 @@ type Service struct {
 	currentPack         func(command.Context) (int, error)
 	load                func(int) (*gamedata.HuntingPack, error)
 	dispatchLoad        func(uint64, uint64) (*gamedata.DispatchDesign, error)
-	dispatchEligibility func(*gamedata.DispatchDesign) error
+	dispatchEligibility func(command.Context, *gamedata.DispatchDesign) error
+	dispatchCosts       func(command.Context, *gamedata.DispatchDesign, uint64) ([]gamedata.Reward, error)
+	dispatchExchange    func(command.Context, string, []gamedata.Reward, []gamedata.Reward) ([]byte, error)
+	dispatchBonus       func(*gamedata.DispatchDesign, []gamedata.BattleReward) ([]gamedata.BattleReward, error)
+	dispatchProgress    func(command.Context, uint64) error
 	eligibility         func(ctx command.Context, _ int, _ uint64) error
 	grant               func(command.Context, string, []gamedata.Reward) ([]byte, error)
 	apDesign            *gamedata.HuntingAPDesign

go/internal/server/domain/battle/hunting/protocol_adapter.go

@@ -399,6 +399,14 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 	if err != nil {
 		return code, nil, true, err
 	}
+	sky := d.TypeGroup != 0
+	if sky && (s.dispatchCosts == nil || s.dispatchExchange == nil || s.dispatchBonus == nil) {
+		return code, nil, true, fmt.Errorf("hunting: SkyWay dispatch runtime missing")
+	}
+	freeType, bonusType := uint64(21), uint64(23)
+	if sky && d.APType == 2 {
+		freeType, bonusType = 32, 33
+	}
 	var out []byte
 	if path == "/HuntDispatchRewardPreview" {
 		if !exists {
@@ -411,10 +419,10 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 		bonus := min(remaining, job.Bonus)
 		free := remaining - bonus
 		if free > 0 {
-			preview = append(preview, gamedata.BattleReward{Type: 21, Count: free})
+			preview = append(preview, gamedata.BattleReward{Type: freeType, Count: free})
 		}
 		if bonus > 0 {
-			preview = append(preview, gamedata.BattleReward{Type: 23, Count: bonus})
+			preview = append(preview, gamedata.BattleReward{Type: bonusType, Count: bonus})
 		}
 		bundle := dispatchPreview(preview)
 		for _, r := range preview {
@@ -435,23 +443,40 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 		remaining := d.AP * (job.Count - played)
 		refundBonus := min(remaining, job.Bonus)
 		refundFree := remaining - refundBonus
-		next := s.clone()
-		next.Free += refundFree
-		next.Bonus += refundBonus
-		if e := s.persist(ctx, next); e != nil {
-			return code, nil, true, e
+		if !sky {
+			next := s.clone()
+			next.Free += refundFree
+			next.Bonus += refundBonus
+			if e := s.persist(ctx, next); e != nil {
+				return code, nil, true, e
+			}
 		}
 		if refundFree > 0 {
-			completed = append(completed, gamedata.BattleReward{Type: 21, Count: refundFree})
+			completed = append(completed, gamedata.BattleReward{Type: freeType, Count: refundFree})
 		}
 		if refundBonus > 0 {
-			completed = append(completed, gamedata.BattleReward{Type: 23, Count: refundBonus})
+			completed = append(completed, gamedata.BattleReward{Type: bonusType, Count: refundBonus})
+		}
+		var bundle []byte
+		var e error
+		if sky {
+			var rewards []gamedata.Reward
+			for _, row := range completed {
+				rewards = append(rewards, gamedata.Reward(row))
+			}
+			bundle, e = s.dispatchExchange(ctx, "dispatch:"+key, nil, rewards)
+		} else {
+			bundle, e = s.dispatchGrant(ctx, "dispatch:"+key, completed)
 		}
-		bundle, e := s.dispatchGrant(ctx, "dispatch:"+key, completed)
 		if e != nil {
 			return code, nil, true, e
 		}
 		out = wire.AppendBytes(out, 1, bundle)
+		if played > 0 && s.dispatchProgress != nil {
+			if e = s.dispatchProgress(ctx, played); e != nil {
+				return code, nil, true, e
+			}
+		}
 		delete(ds.Jobs, jobKey)
 	} else {
 		count, _, e := wire.Varint(req, 4)
@@ -470,8 +495,8 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 				return code, nil, true, fmt.Errorf("hunting: dispatch category already running")
 			}
 		}
-		if s.dispatchEligibility != nil {
-			if e = s.dispatchEligibility(d); e != nil {
+		if d.TypeGroup != 0 && s.dispatchEligibility != nil {
+			if e = s.dispatchEligibility(ctx, d); e != nil {
 				return code, nil, true, e
 			}
 		} else {
@@ -487,7 +512,14 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 			return code, nil, true, fmt.Errorf("hunting: dispatch AP overflow")
 		}
 		cost := d.AP * count
-		if s.state.Free < cost && s.state.Bonus < cost-s.state.Free {
+		var skyCosts []gamedata.Reward
+		if sky {
+			skyCosts, e = s.dispatchCosts(ctx, d, count)
+			if e != nil {
+				return code, nil, true, e
+			}
+		}
+		if !sky && s.state.Free < cost && s.state.Bonus < cost-s.state.Free {
 			return code, nil, true, fmt.Errorf("hunting: insufficient hunting AP")
 		}
 		rewards, e := d.Roll(count, func(n uint64) (uint64, error) {
@@ -500,11 +532,29 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 		if e != nil {
 			return code, nil, true, e
 		}
+		if sky {
+			rewards, e = s.dispatchBonus(d, rewards)
+			if e != nil {
+				return code, nil, true, e
+			}
+		}
 		next := s.clone()
 		free := min(cost, next.Free)
 		bonus := cost - free
-		next.Free -= free
-		next.Bonus -= bonus
+		if sky {
+			free, bonus = 0, 0
+			for _, c := range skyCosts {
+				switch c.Type {
+				case freeType:
+					free += c.Count
+				case bonusType:
+					bonus += c.Count
+				}
+			}
+		} else {
+			next.Free -= free
+			next.Bonus -= bonus
+		}
 		if path == "/HuntDispatchStart" {
 			now := uint64(time.Now().UnixMilli())
 			runs := make([][]gamedata.BattleReward, count)
@@ -520,9 +570,30 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 					return code, nil, true, e
 				}
 			}
+			if sky {
+				for i, run := range runs {
+					runs[i], e = s.dispatchBonus(d, run)
+					if e != nil {
+						return code, nil, true, e
+					}
+				}
+				if _, e = s.dispatchExchange(ctx, "dispatch-charge:"+key, skyCosts, nil); e != nil {
+					return code, nil, true, e
+				}
+			}
 			job = dispatchJob{Group: group, ID: id, Count: count, Start: now, End: now + d.ClearTime*count*1000, Free: free, Bonus: bonus, Rewards: rewards, Runs: runs}
 			ds.Jobs[jobKey] = job
 			out = wire.AppendBytes(out, 1, dispatchJobWire(job))
+		} else if sky {
+			var grants []gamedata.Reward
+			for _, row := range rewards {
+				grants = append(grants, gamedata.Reward(row))
+			}
+			bundle, e := s.dispatchExchange(ctx, "dispatch:"+key, skyCosts, grants)
+			if e != nil {
+				return code, nil, true, e
+			}
+			out = wire.AppendBytes(out, 1, bundle)
 		} else {
 			beforeFree, beforeBonus := s.state.Free, s.state.Bonus
 			bundle, e := s.dispatchGrant(ctx, "dispatch:"+key, rewards)
@@ -549,8 +620,15 @@ func (s *Service) handleDispatch(ctx command.Context, path string, req []byte, s
 				next.Bonus -= delta
 			}
 		}
-		if e = s.persist(ctx, next); e != nil {
-			return code, nil, true, e
+		if !sky {
+			if e = s.persist(ctx, next); e != nil {
+				return code, nil, true, e
+			}
+		}
+		if path == "/HuntDispatch" && s.dispatchProgress != nil {
+			if e = s.dispatchProgress(ctx, count); e != nil {
+				return code, nil, true, e
+			}
 		}
 	}
 	ds.Receipts[key] = dispatchReceipt{append([]byte(path), req...), out, code}

go/internal/server/domain/battle/protocol_adapter.go

@@ -19,7 +19,7 @@ func checkSeq(request []byte) error {
 }
 
 func (s *Service) Handle(ctx command.Context, path string, request []byte) (int, []byte, bool, error) {
-	if path != "/BattleEnter" && path != "/BattleStart" && path != "/BattleRetry" && path != "/BattleVerifyState" && path != "/BattleEnd" && path != "/BattleExit" && path != "/BattlePhaseChange" {
+	if path != "/BattleEnter" && path != "/BattleStart" && path != "/BattleRetry" && path != "/BattleVerifyState" && path != "/BattleEnd" && path != "/BattleEndTest" && path != "/BattleExit" && path != "/BattlePhaseChange" {
 		return 0, nil, false, nil
 	}
 	if err := checkSeq(request); err != nil {
@@ -27,6 +27,11 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 	}
 
 	state := s.stateLocked(ctx)
+	endCode := 15
+	if path == "/BattleEndTest" {
+		path = "/BattleEnd"
+		endCode = 181
+	}
 	switch path {
 	case "/BattlePhaseChange":
 		if !state.entered {
@@ -144,6 +149,15 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 		}
 		var phases []gamedata.BattlePhase
 		fieldInstance := ""
+		if gamedata.IsSkyWayMode(mode) {
+			if s.skyway == nil {
+				return 0, nil, true, errors.New("battle: SkyWay runtime unavailable")
+			}
+			fieldInstance, err = s.skyway.SkyWayBeginBattle(ctx, packID, mode, monster, deck)
+			if err != nil {
+				return 0, nil, true, err
+			}
+		}
 		if mode == 2 && eventRuntime == nil && s.fieldMonsters != nil && monster != 0 {
 			instance, _, e := s.fieldMonsters.BeginFieldMonsterBattle(ctx, packID, monster, deck)
 			if e != nil {
@@ -190,6 +204,7 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			}
 		}
 		state.entered, state.index, state.round, state.initialBlue = true, 0, 0, nil
+		state.retryable = false
 		state.monster, state.deck, state.pack = monster, deck, packID
 		state.mode = mode
 		state.enterReceipt = identity
@@ -198,7 +213,7 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 		s.transientVersion++
 		return 52, response, true, nil
 	case "/BattleRetry":
-		if !state.entered {
+		if !state.entered && !state.retryable {
 			return 0, nil, true, errors.New("battle: retry before enter")
 		}
 		index, found, err := wire.Varint(request, 2)
@@ -208,12 +223,29 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 		if len(state.initialBlue) == 0 {
 			return 0, nil, true, errors.New("battle: retry before initial battle state")
 		}
+		if index != state.index {
+			return 0, nil, true, errors.New("battle: retry index does not match current battle")
+		}
+		if state.retryable {
+			if s.currentPack == nil {
+				return 0, nil, true, errors.New("battle: retry pack resolver unavailable")
+			}
+			pack, err := s.currentPack(ctx)
+			if err != nil || pack != state.pack {
+				return 0, nil, true, errors.New("battle: retry outside failed encounter pack")
+			}
+			firstDeck := state.deck
+			if len(state.phases) > 0 {
+				firstDeck = state.phases[0].DeckID
+			}
+			instance, err := s.skyway.SkyWayBeginBattle(ctx, state.pack, state.mode, state.monster, firstDeck)
+			if err != nil || instance != state.fieldInstance {
+				return 0, nil, true, errors.New("battle: failed SkyWay encounter no longer available")
+			}
+		}
 		if len(state.phases) != 0 {
 			// Retry requests carry the current deck; the response must restore
 			// the first phase's deck, as PhaseBattleManager.ApplyRetryResponse does.
-			if index != state.index {
-				return 0, nil, true, errors.New("battle: retry index does not match current phase")
-			}
 			index = state.phases[0].DeckID
 		}
 		var response []byte
@@ -226,6 +258,7 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			state.deck = state.phases[0].DeckID
 		}
 		state.phase, state.phaseStarted, state.phaseSeq, state.phaseReply = 0, false, 0, nil
+		state.entered, state.retryable = true, false
 		s.transientVersion++
 		return 58, response, true, nil
 	case "/BattleStart":
@@ -243,6 +276,11 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			return 0, nil, true, errors.New("battle: start index does not match current phase")
 		}
 		nextRound := state.round + 1
+		if nextRound == 1 && gamedata.IsSkyWayMode(state.mode) {
+			if err := s.skyway.SkyWayBattleStarted(ctx, state.mode, state.enterReceipt); err != nil {
+				return 0, nil, true, err
+			}
+		}
 		var initialBlue [][]byte
 		var response []byte
 		err = wire.Walk(request, func(field wire.Field) error {
@@ -277,7 +315,7 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			if !bytes.Equal(state.endRequest, request) {
 				return 0, nil, true, errors.New("battle: changed settlement retry")
 			}
-			return 15, append([]byte(nil), state.endReply...), true, nil
+			return endCode, append([]byte(nil), state.endReply...), true, nil
 		}
 		if !state.entered {
 			return 0, nil, true, errors.New("battle: end before enter")
@@ -367,6 +405,21 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			response = wire.AppendBytes(response, 3, character)
 		}
 		rewardBundle := false
+		if result == 1 && gamedata.IsSkyWayMode(state.mode) {
+			seq, _, _ := wire.Varint(request, 1)
+			bundle, bonus, monsters, err := s.skyway.SkyWayCompleteBattle(ctx, state.pack, state.mode, state.monster, state.deck, state.fieldInstance, fmt.Sprintf("%s:%d", ctx.SessionID, seq))
+			if err != nil {
+				return 0, nil, true, err
+			}
+			for _, monster := range monsters {
+				response = wire.AppendBytes(response, 4, monster)
+			}
+			response = wire.AppendBytes(response, 5, bundle)
+			if len(bonus) > 0 {
+				response = wire.AppendBytes(response, 6, bonus)
+			}
+			rewardBundle = true
+		}
 		if result == 1 && state.mode == huntingGroundMode {
 			seq, _, _ := wire.Varint(request, 1)
 			bundle, monsters, err := s.hunting.CompleteBattle(ctx, state.pack, state.mode, state.monster, state.deck,
@@ -380,7 +433,7 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			response = wire.AppendBytes(response, 5, bundle)
 			rewardBundle = true
 		}
-		if result == 1 && state.mode != huntingGroundMode && state.monster != 0 && s.gameDataRoot != "" {
+		if result == 1 && state.mode != huntingGroundMode && !gamedata.IsSkyWayMode(state.mode) && state.monster != 0 && s.gameDataRoot != "" {
 			if state.pack <= 0 {
 				return 0, nil, true, errors.New("battle: victory has no locked pack")
 			}
@@ -433,13 +486,21 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 			if field == 5 && rewardBundle {
 				continue
 			}
+			if field == 6 && gamedata.IsSkyWayMode(state.mode) && result == 1 {
+				continue
+			}
 			response = wire.AppendBytes(response, field, nil)
 		}
 		state.rememberEnd(request, response)
-		state.entered, state.deck, state.pack, state.initialBlue = false, 0, 0, nil
+		state.entered = false
+		state.retryable = (result == 2 || result == 3) && gamedata.IsSkyWayMode(state.mode)
+		if !state.retryable {
+			state.deck, state.pack, state.initialBlue = 0, 0, nil
+		}
 		s.transientVersion++
-		return 15, response, true, nil
+		return endCode, response, true, nil
 	case "/BattleExit":
+		state.retryable = false
 		state.entered, state.index, state.round, state.deck, state.pack, state.initialBlue = false, 0, 0, 0, 0, nil
 		s.transientVersion++
 		return 388, nil, true, nil

go/internal/server/domain/events/tasks/skyway.go

@@ -0,0 +1,37 @@
+package eventtasks
+
+import (
+	"bd2server/internal/server/domain/command"
+	"slices"
+)
+
+func (s *Service) RecordSkyWayClear(ctx command.Context, positionGroup, difficulty uint64) error {
+	changed := false
+	for _, schedule := range s.taskSchedules() {
+		if schedule.Type != 4 || !s.active(schedule) {
+			continue
+		}
+		for _, task := range s.design.Missions {
+			if task.Type != 24 || task.SubType != positionGroup || !slices.Contains(task.Params, difficulty) || !s.availableTask(ctx, schedule, task) {
+				continue
+			}
+			previous := s.state.Missions[scheduleKey(schedule)+"/"+key(task.ID)]
+			var prior mission
+			if previous != nil {
+				prior = *previous
+			}
+			current := s.mission(schedule, task.ID)
+			if previous == nil || prior != *current {
+				changed = true
+			}
+			if !current.Claimed && current.Value < task.Target {
+				current.Value++
+				changed = true
+			}
+		}
+	}
+	if !changed {
+		return nil
+	}
+	return s.save(ctx)
+}

go/internal/server/domain/world/field_object_routes.go

@@ -25,8 +25,11 @@ func (s *Service) validateFieldObjectMap(ctx command.Context, pack, mapID int) e
 		return nil
 	}
 	current, err := s.currentFieldMap(ctx, pack)
-	if err != nil || current != mapID {
-		return fmt.Errorf("%w: field object outside current map", ErrInvalidRequest)
+	if err != nil {
+		return fmt.Errorf("%w: field object map unavailable (pack=%d object_map=%d): %v", ErrInvalidRequest, pack, mapID, err)
+	}
+	if current != mapID {
+		return fmt.Errorf("%w: field object outside current map (pack=%d object_map=%d current_map=%d)", ErrInvalidRequest, pack, mapID, current)
 	}
 	return nil
 }

go/internal/server/domain/world/field_pack.go

@@ -25,6 +25,9 @@ func (s *Service) LastPlayedPackID(ctx command.Context) (uint64, error) {
 		return 0, errors.New("world: saved login pack is unavailable")
 	}
 	if pack, field := s.fieldPacks[int(id)]; field {
+		if pack.Type == 5 {
+			return id, nil
+		}
 		saved, _ := s.state.Position()
 		if !pack.MapIDs[saved.Position.MapID] {
 			return 0, errors.New("world: saved arena map does not belong to pack")

go/internal/server/domain/world/overwhelm.go

@@ -23,8 +23,7 @@ type overwhelmedMonster struct {
 	Costs                 []gamedata.Reward
 }
 
-func (s *Service) AttachOverwhelmDesign(source *gamedata.Source, rows []gamedata.SkyWayOverwhelmRule) error {
-	s.overwhelmSky = rows
+func (s *Service) AttachOverwhelmDesign(source *gamedata.Source) error {
 	s.overwhelmQuest = func(pack, quest int) (gamedata.OverwhelmQuestRule, error) {
 		return source.OverwhelmQuest(pack, quest)
 	}

go/internal/server/domain/world/protocol_field_adapter.go

@@ -77,8 +77,18 @@ func (s *Service) handleOverwhelm(ctx command.Context, request []byte) (int, []b
 			if e = s.overwhelmHunting.ValidateBattle(ctx, pack, 5, m.ID, m.Deck); e != nil {
 				return 275, nil, true, e
 			}
+		} else if gamedata.IsSkyWayMode(m.Mode) {
+			definition, found, e := s.findFieldMonster(pack, int(m.ID))
+			if e != nil || !found || definition.UseBattleSkip != 1 {
+				return 275, nil, true, fmt.Errorf("world: SkyWay monster cannot be overwhelmed")
+			}
+			m.Instance, e = s.SkyWayBeginBattle(ctx, pack, m.Mode, m.ID, m.Deck)
+			if e != nil {
+				return 275, nil, true, e
+			}
+			m.Definition = definition
 		} else {
-			if m.Mode != 1 && m.Mode != 2 && m.Mode != 4 && (m.Mode < 9 || m.Mode > 15) {
+			if m.Mode != 1 && m.Mode != 2 && m.Mode != 4 {
 				return 275, nil, true, fmt.Errorf("world: unavailable overwhelm battle mode %d", m.Mode)
 			}
 			definition, found, e := s.findFieldMonster(pack, int(m.ID))
@@ -104,44 +114,7 @@ func (s *Service) handleOverwhelm(ctx command.Context, request []byte) (int, []b
 			if !validDeck {
 				return 275, nil, true, fmt.Errorf("world: overwhelm deck mismatch")
 			}
-			if m.Mode >= 9 && m.Mode <= 15 {
-				mapID, e := s.currentFieldMap(ctx, pack)
-				if e != nil {
-					return 275, nil, true, e
-				}
-				found := false
-				for _, rule := range s.overwhelmSky {
-					if rule.Map != uint64(mapID) || rule.Group+8 != m.Mode {
-						continue
-					}
-					cost := uint64(0)
-					if rule.Boss == m.ID {
-						found = true
-						cost = rule.BossAP
-					} else {
-						for i, id := range rule.Monsters {
-							if id == m.ID {
-								found = true
-								cost = rule.AP[i]
-							}
-						}
-					}
-					if found {
-						typ := uint64(21)
-						if rule.APType == 2 {
-							typ = 23
-						}
-						if cost > 0 {
-							m.Costs = []gamedata.Reward{{Type: typ, Count: cost}}
-						}
-						break
-					}
-				}
-				if !found {
-					return 275, nil, true, fmt.Errorf("world: skyway monster does not match current dungeon")
-				}
-				m.Instance = fmt.Sprintf("skyway:%s:%d", identity, m.ID)
-			} else if m.Mode == 2 {
+			if m.Mode == 2 {
 				if int(m.Group) != definition.GroupID || definition.GroupID == 0 || !s.monsterEligible(pack, definition) {
 					return 275, nil, true, ErrInvalidRequest
 				}
@@ -211,6 +184,16 @@ func (s *Service) handleOverwhelm(ctx command.Context, request []byte) (int, []b
 			for _, row := range monsters {
 				response = wire.AppendBytes(response, 1, row)
 			}
+		} else if gamedata.IsSkyWayMode(m.Mode) {
+			reward, bonus, monsters, e := s.SkyWayCompleteBattle(ctx, pack, m.Mode, m.ID, m.Deck, m.Instance, fmt.Sprintf("%s:%d", identity, m.ID))
+			if e != nil {
+				return 275, nil, true, e
+			}
+			bundle = append(bundle, reward...)
+			bundle = append(bundle, bonus...)
+			for _, row := range monsters {
+				response = wire.AppendBytes(response, 1, row)
+			}
 		} else {
 			if !v.Claims[m.Instance] && m.Definition.Type != 3 {
 				definition := m.Definition
@@ -350,6 +333,21 @@ func (s *Service) handleMonsterInfo(ctx command.Context, request []byte) (int, [
 	if e != nil || !s.packUnlocked(ctx, pack) || s.monsterLoader == nil {
 		return 0, nil, true, ErrInvalidRequest
 	}
+	if s.skyway != nil && pack == s.skyway.design.Pack {
+		v, err := s.skyway.load(ctx)
+		if err != nil {
+			return 51, nil, true, err
+		}
+		stage, ok := s.skyway.design.Stage(v.Run.Group, v.Run.ID)
+		if !ok {
+			return 51, nil, true, nil
+		}
+		var out []byte
+		for _, row := range s.skyway.monsters(stage, v.Run) {
+			out = wire.AppendBytes(out, 1, row)
+		}
+		return 51, out, true, nil
+	}
 	design, e := s.monsterLoader(pack)
 	if e != nil {
 		return 0, nil, true, e
@@ -861,7 +859,7 @@ func (s *Service) handleFieldObjectReward(ctx command.Context, request []byte) (
 	}
 	response, err := s.openFieldObjectResponse(ctx, pack, int(group), int(id))
 	if err != nil {
-		return 0, nil, true, err
+		return 0, nil, true, fmt.Errorf("field object reward pack=%d group=%d object=%d: %w", pack, group, id, err)
 	}
 	return 29, response, true, nil
 }

go/internal/server/domain/world/protocol_story_adapter.go

@@ -362,6 +362,14 @@ func (s *Service) resolveActivePartyWires(ctx command.Context, packID, questID i
 func (s *Service) storyPackDBInfoRows(ctx command.Context) [][]byte {
 	ids := make([]int, 0, len(s.storyCatalog.Packs))
 	for id := range s.storyCatalog.Packs {
+		if s.storyCatalog.Packs[id].Type == 5 {
+			if s.collection == nil {
+				continue
+			}
+			if _, owned := s.collection.Grant(packPurchaseIdentity(id)); !owned {
+				continue
+			}
+		}
 		if s.storyPackUnlocked(ctx, id) {
 			ids = append(ids, id)
 		}
@@ -400,7 +408,7 @@ func (s *Service) storyPackDBInfoRows(ctx command.Context) [][]byte {
 		rows = append(rows, row)
 	}
 	if saved, found := s.state.Position(); found {
-		if pack, arena := s.fieldPacks[saved.PackID]; arena && pack.MapIDs[saved.Position.MapID] {
+		if pack, arena := s.fieldPacks[saved.PackID]; arena && pack.Type != 5 && pack.MapIDs[saved.Position.MapID] {
 			rows = append(rows, wire.AppendVarint(wire.AppendVarint(nil, 1, uint64(saved.PackID)), 8, 1))
 		}
 	}
@@ -719,6 +727,27 @@ func (s *Service) purchaseStoryPack(ctx command.Context, id int, initial bool) (
 	if !exists {
 		return nil, fmt.Errorf("%w: unknown purchase pack %d", ErrInvalidRequest, id)
 	}
+	if pack.Type == 5 {
+		if s.skyway == nil || s.collection == nil {
+			return nil, fmt.Errorf("world: SkyWay purchase runtime unavailable")
+		}
+		identity := packPurchaseIdentity(id)
+		if _, owned := s.collection.Grant(identity); owned {
+			return []byte{}, nil
+		}
+		var costs []gamedata.Reward
+		if !initial && pack.BuyPrice > 0 {
+			costs = []gamedata.Reward{{Type: pack.BuyType, Count: pack.BuyPrice}}
+		}
+		bundle, err := s.skyway.economy.Apply(ctx, identity, costs, pack.BuyRewards)
+		if err != nil {
+			return nil, err
+		}
+		if err = s.collection.RecordGrantMarker(ctx, identity); err != nil {
+			return nil, err
+		}
+		return bundle, nil
+	}
 	return s.purchasePack(ctx, id, pack.BuyType, pack.BuyPrice, pack.BuyRewards, initial)
 }
 
@@ -924,6 +953,9 @@ func (s *Service) enterEventFieldPack(ctx command.Context, pack gamedata.EventFi
 }
 
 func (s *Service) Handle(ctx command.Context, path string, request []byte) (int, []byte, bool, error) {
+	if code, out, handled, err := s.handleSkyWay(ctx, path, request); handled {
+		return code, out, handled, err
+	}
 	if s.todayQuests != nil {
 		if code, body, handled, err := s.todayQuests.Handle(ctx, path, request); handled {
 			if err == nil {
@@ -1090,6 +1122,19 @@ func (s *Service) Handle(ctx command.Context, path string, request []byte) (int,
 		if !s.packUnlocked(ctx, pack) {
 			return 0, nil, true, fmt.Errorf("%w: unsupported pack %d", ErrInvalidRequest, pack)
 		}
+		if s.skyway != nil && pack == s.skyway.design.Pack {
+			if _, purchased := s.collection.Grant(packPurchaseIdentity(pack)); !purchased {
+				return 0, nil, true, fmt.Errorf("world: SkyWay pack is not purchased")
+			}
+			v, e := s.skyway.load(ctx)
+			if e != nil {
+				return 0, nil, true, e
+			}
+			v.Run = skyWayRun{Generation: v.Run.Generation}
+			if e = s.skyway.save(ctx, v); e != nil {
+				return 0, nil, true, e
+			}
+		}
 		if active := s.firstUnclearedQuestFor(pack); active != 0 {
 			if _, err := s.ensureQuestItems(ctx, pack, active); err != nil {
 				return 0, nil, true, err

go/internal/server/domain/world/skyway.go

@@ -0,0 +1,554 @@
+package world
+
+import (
+	"bd2server/internal/server/design/gamedata"
+	"bd2server/internal/server/domain/command"
+	"bd2server/internal/server/domain/world/progress"
+	"bd2server/internal/server/platform/versionconfig"
+	"bd2server/internal/server/protocol/wire"
+	"bd2server/internal/server/storage/stateio"
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"math"
+	"slices"
+	"strconv"
+	"time"
+)
+
+type SkyWaySchedule struct {
+	Group, Bonus uint64
+	Days         []uint64
+}
+type skyWayEconomy interface {
+	CanApply(command.Context, []gamedata.Reward) error
+	Apply(command.Context, string, []gamedata.Reward, []gamedata.Reward) ([]byte, error)
+	AdditionalCurrencies(command.Context) (map[int]uint64, error)
+}
+type skyWayAP interface {
+	HuntingAP(command.Context) (uint64, uint64, error)
+}
+type skyWayRuntime struct {
+	design        *gamedata.SkyWayDesign
+	store         stateio.Store
+	economy       skyWayEconomy
+	ap            skyWayAP
+	schedules     []SkyWaySchedule
+	now           func() time.Time
+	graph         *gamedata.RewardGraph
+	bossProgress  func(command.Context, uint64, uint64) error
+	battleAttempt func(command.Context, uint64) error
+}
+type skyWayGroup struct {
+	Current uint64
+	Maximum int
+	Auto    bool
+}
+type skyWayRun struct {
+	Group, ID, Generation uint64
+	Defeated              []uint64
+}
+type skyWayReceipt struct {
+	Request         []byte
+	Response, Bonus []byte
+	Monsters        [][]byte
+}
+type skyWayState struct {
+	Version  string                   `json:"version"`
+	Groups   map[string]skyWayGroup   `json:"groups"`
+	Run      skyWayRun                `json:"run"`
+	Receipts map[string]skyWayReceipt `json:"receipts"`
+}
+
+func (s *Service) AttachSkyWay(ctx command.Context, d *gamedata.SkyWayDesign, store stateio.Store, economy skyWayEconomy, ap skyWayAP, schedules []SkyWaySchedule, graph *gamedata.RewardGraph) error {
+	if d == nil || store == nil || economy == nil || ap == nil || graph == nil {
+		return fmt.Errorf("world: invalid SkyWay runtime")
+	}
+	seen := map[uint64]bool{}
+	for _, r := range schedules {
+		if r.Group == 0 || r.Group > 7 || seen[r.Group] || r.Bonus > math.MaxInt32 {
+			return fmt.Errorf("world: invalid SkyWay schedule")
+		}
+		seen[r.Group] = true
+		days := map[uint64]bool{}
+		for _, day := range r.Days {
+			if day > 6 || days[day] {
+				return fmt.Errorf("world: invalid SkyWay bonus day")
+			}
+			days[day] = true
+		}
+	}
+	for _, row := range d.Stages {
+		if !seen[row.Group] {
+			return fmt.Errorf("world: missing SkyWay group schedule")
+		}
+	}
+	s.skyway = &skyWayRuntime{design: d, store: store, economy: economy, ap: ap, schedules: schedules, now: time.Now, graph: graph}
+	_, err := s.skyway.load(ctx)
+	return err
+}
+func (r *skyWayRuntime) load(ctx command.Context) (skyWayState, error) {
+	v := skyWayState{Version: versionconfig.State(), Groups: map[string]skyWayGroup{}, Receipts: map[string]skyWayReceipt{}}
+	b, err := r.store.Load(ctx.State, "skyway")
+	if err != nil || b == nil {
+		return v, err
+	}
+	if err = stateio.RequireExactJSONObject(b, "version", "groups", "run", "receipts"); err != nil {
+		return v, err
+	}
+	d := json.NewDecoder(bytes.NewReader(b))
+	d.DisallowUnknownFields()
+	if err = d.Decode(&v); err != nil {
+		return v, err
+	}
+	if v.Version != versionconfig.State() || v.Groups == nil || v.Receipts == nil {
+		return v, fmt.Errorf("world: incompatible SkyWay state")
+	}
+	for k, st := range v.Groups {
+		g, e := strconv.ParseUint(k, 10, 64)
+		stage, ok := r.design.Stage(g, st.Current)
+		maximum := -1
+		for _, row := range r.design.Stages {
+			if row.Group == g {
+				maximum = max(maximum, int(row.Difficulty))
+			}
+		}
+		if e != nil || strconv.FormatUint(g, 10) != k || !ok || st.Maximum < -1 || st.Maximum > maximum || int(stage.Difficulty) > st.Maximum+1 {
+			return v, fmt.Errorf("world: invalid SkyWay group progression")
+		}
+	}
+	if v.Run.Group != 0 {
+		stage, ok := r.design.Stage(v.Run.Group, v.Run.ID)
+		if !ok || v.Run.Generation == 0 {
+			return v, fmt.Errorf("world: invalid SkyWay run")
+		}
+		seen := map[uint64]bool{}
+		for _, id := range v.Run.Defeated {
+			if !slices.Contains(stage.Monsters, id) || seen[id] {
+				return v, fmt.Errorf("world: invalid SkyWay defeated monster")
+			}
+			seen[id] = true
+		}
+	}
+	return v, nil
+}
+func (r *skyWayRuntime) save(ctx command.Context, v skyWayState) error {
+	b, err := json.Marshal(v)
+	if err != nil {
+		return err
+	}
+	return r.store.Save(ctx.State, "skyway", b)
+}
+func (s *Service) skyWayPack(ctx command.Context, pack int) error {
+	if s.skyway == nil || pack != s.skyway.design.Pack || !s.packUnlocked(ctx, pack) {
+		return fmt.Errorf("world: SkyWay pack unavailable")
+	}
+	return nil
+}
+func (r *skyWayRuntime) costs(ctx command.Context, stage gamedata.SkyWayStage, count uint64) ([]gamedata.Reward, error) {
+	if count == 0 {
+		return nil, nil
+	}
+	var free, bonus uint64
+	var err error
+	freeType, bonusType := uint64(21), uint64(23)
+	if stage.APType == 1 {
+		free, bonus, err = r.ap.HuntingAP(ctx)
+	} else {
+		freeType, bonusType = 32, 33
+		var values map[int]uint64
+		values, err = r.economy.AdditionalCurrencies(ctx)
+		free, bonus = values[36], values[37]
+	}
+	if err != nil {
+		return nil, err
+	}
+	if free < count && bonus < count-free {
+		return nil, fmt.Errorf("world: insufficient SkyWay AP")
+	}
+	n := min(free, count)
+	var out []gamedata.Reward
+	if n > 0 {
+		out = append(out, gamedata.Reward{Type: freeType, Count: n})
+	}
+	if n < count {
+		out = append(out, gamedata.Reward{Type: bonusType, Count: count - n})
+	}
+	return out, nil
+}
+func (s *Service) handleSkyWay(ctx command.Context, path string, request []byte) (int, []byte, bool, error) {
+	if path == "/SaveUserPosition" && s.skyway != nil {
+		pack, err := requestPack(request)
+		if err != nil {
+			return 7, nil, true, err
+		}
+		if pack == s.skyway.design.Pack {
+			raw, found, e := wire.Bytes(request, 3)
+			var position progress.Position
+			if e != nil || !found || json.Unmarshal(raw, &position) != nil || !s.skyway.design.SafeMaps[position.MapID] || !s.packUnlocked(ctx, pack) {
+				return 7, nil, true, ErrInvalidRequest
+			}
+			if e = s.state.SaveUserPosition(ctx, request); e != nil {
+				return 7, nil, true, e
+			}
+			v, e := s.skyway.load(ctx)
+			if e != nil {
+				return 7, nil, true, e
+			}
+			v.Run = skyWayRun{Generation: v.Run.Generation}
+			e = s.skyway.save(ctx, v)
+			return 7, nil, true, e
+		}
+	}
+	code := map[string]int{"/SkyWayInfo": 160, "/SkyWayEnter": 161, "/SkyWayScheduleInfo": 162}[path]
+	if code == 0 {
+		return 0, nil, false, nil
+	}
+	if s.skyway == nil {
+		return code, nil, true, fmt.Errorf("world: SkyWay runtime missing")
+	}
+	seq, present, err := wire.Varint(request, 1)
+	if err != nil || !present || seq == 0 || seq > math.MaxInt32 {
+		return code, nil, true, ErrInvalidRequest
+	}
+	r := s.skyway
+	if path == "/SkyWayScheduleInfo" {
+		var out []byte
+		for _, schedule := range r.schedules {
+			row := wire.AppendVarint(nil, 1, schedule.Group)
+			for _, day := range schedule.Days {
+				row = wire.AppendVarint(row, 2, day)
+			}
+			if schedule.Bonus > 0 {
+				row = wire.AppendVarint(row, 3, schedule.Bonus)
+			}
+			out = wire.AppendBytes(out, 1, row)
+		}
+		return code, out, true, nil
+	}
+	pack, err := requestPack(request)
+	if err != nil {
+		return code, nil, true, err
+	}
+	if err = s.skyWayPack(ctx, pack); err != nil {
+		return code, nil, true, err
+	}
+	v, err := r.load(ctx)
+	if err != nil {
+		return code, nil, true, err
+	}
+	if path == "/SkyWayInfo" {
+		var out []byte
+		seen := map[uint64]bool{}
+		for _, stage := range r.design.Stages {
+			if seen[stage.Group] {
+				continue
+			}
+			seen[stage.Group] = true
+			st, ok := v.Groups[strconv.FormatUint(stage.Group, 10)]
+			if !ok {
+				st = skyWayGroup{Current: stage.ID, Maximum: -1}
+			}
+			row := wire.AppendVarint(nil, 2, stage.Group)
+			row = wire.AppendVarint(row, 3, st.Current)
+			row = wire.AppendVarint(row, 4, uint64(int64(st.Maximum)))
+			if st.Auto {
+				row = wire.AppendVarint(row, 1, 1)
+			}
+			out = wire.AppendBytes(out, 1, row)
+		}
+		return code, out, true, nil
+	}
+	if ctx.SessionID == "" {
+		return code, nil, true, ErrInvalidRequest
+	}
+	key := "enter:" + ctx.SessionID + ":" + strconv.FormatUint(seq, 10)
+	if prior, ok := v.Receipts[key]; ok {
+		if !bytes.Equal(prior.Request, request) {
+			return code, nil, true, ErrInvalidRequest
+		}
+		return code, prior.Response, true, nil
+	}
+	group, _, err := wire.Varint(request, 3)
+	if err != nil {
+		return code, nil, true, err
+	}
+	id, _, err := wire.Varint(request, 4)
+	if err != nil {
+		return code, nil, true, err
+	}
+	auto, _, err := wire.Varint(request, 5)
+	if err != nil || auto > 1 {
+		return code, nil, true, ErrInvalidRequest
+	}
+	stage, ok := r.design.Stage(group, id)
+	if !ok {
+		return code, nil, true, ErrInvalidRequest
+	}
+	current, err := s.CurrentPackID(ctx)
+	if err != nil || current != pack || s.battleActive != nil && s.battleActive(ctx) {
+		return code, nil, true, fmt.Errorf("world: SkyWay enter outside current pack or during battle")
+	}
+	st, exists := v.Groups[strconv.FormatUint(group, 10)]
+	if !exists {
+		st.Maximum = -1
+	}
+	if int(stage.Difficulty) > st.Maximum+1 {
+		return code, nil, true, fmt.Errorf("world: SkyWay difficulty requires previous boss clear")
+	}
+	if _, err = r.costs(ctx, stage, 1); err != nil {
+		return code, nil, true, err
+	}
+	if v.Run.Generation == math.MaxUint64 {
+		return code, nil, true, fmt.Errorf("world: SkyWay generation overflow")
+	}
+	v.Run = skyWayRun{Group: group, ID: id, Generation: v.Run.Generation + 1}
+	st.Current, st.Auto = id, auto == 1
+	v.Groups[strconv.FormatUint(group, 10)] = st
+	var out []byte
+	for _, row := range r.monsters(stage, v.Run) {
+		out = wire.AppendBytes(out, 1, row)
+	}
+	v.Receipts[key] = skyWayReceipt{Request: slices.Clone(request), Response: out}
+	err = r.save(ctx, v)
+	return code, out, true, err
+}
+func (r *skyWayRuntime) monsters(stage gamedata.SkyWayStage, run skyWayRun) [][]byte {
+	var out [][]byte
+	for _, id := range stage.Monsters {
+		out = append(out, r.monster(id, !slices.Contains(run.Defeated, id)))
+	}
+	if len(run.Defeated) == len(stage.Monsters) {
+		out = append(out, r.monster(stage.Boss, true))
+	}
+	return out
+}
+func (r *skyWayRuntime) monster(id uint64, active bool) []byte {
+	m := r.design.Monsters[id]
+	out := wire.AppendVarint(nil, 1, id)
+	out = wire.AppendVarint(out, 2, m.Decks[0])
+	if active {
+		out = wire.AppendVarint(out, 6, 1)
+	}
+	return out
+}
+func (s *Service) SkyWayBeginBattle(ctx command.Context, pack int, mode, monster, deck uint64) (string, error) {
+	if err := s.skyWayPack(ctx, pack); err != nil {
+		return "", err
+	}
+	v, err := s.skyway.load(ctx)
+	if err != nil {
+		return "", err
+	}
+	stage, ok := s.skyway.design.Stage(v.Run.Group, v.Run.ID)
+	if !ok || mode != gamedata.SkyWayMode(stage.Group) || slices.Contains(v.Run.Defeated, monster) {
+		return "", fmt.Errorf("world: invalid SkyWay encounter")
+	}
+	cost := uint64(0)
+	member := false
+	for i, id := range stage.Monsters {
+		if id == monster {
+			member = true
+			cost = stage.AP[i]
+		}
+	}
+	if monster == stage.Boss {
+		member = len(v.Run.Defeated) == len(stage.Monsters)
+		cost = stage.BossAP
+	}
+	if !member || !slices.Contains(s.skyway.design.Monsters[monster].Decks, deck) {
+		return "", fmt.Errorf("world: SkyWay monster/deck unavailable")
+	}
+	if _, err = s.skyway.costs(ctx, stage, cost); err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("skyway:%d:%d:%d:%d", stage.Group, stage.ID, v.Run.Generation, monster), nil
+}
+func (s *Service) SkyWayCompleteBattle(ctx command.Context, pack int, mode, monster, deck uint64, instance, receipt string) ([]byte, []byte, [][]byte, error) {
+	r := s.skyway
+	if r == nil || receipt == "" {
+		return nil, nil, nil, ErrInvalidRequest
+	}
+	v, err := r.load(ctx)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	fingerprint := fmt.Sprintf("%d:%d:%d:%d:%s", pack, mode, monster, deck, instance)
+	key := "win:" + receipt
+	if old, ok := v.Receipts[key]; ok {
+		if !bytes.Equal(old.Request, []byte(fingerprint)) {
+			return nil, nil, nil, ErrInvalidRequest
+		}
+		return old.Response, old.Bonus, old.Monsters, nil
+	}
+	current, err := s.SkyWayBeginBattle(ctx, pack, mode, monster, deck)
+	if err != nil || current != instance {
+		return nil, nil, nil, fmt.Errorf("world: stale SkyWay battle: %w", err)
+	}
+	stage, _ := r.design.Stage(v.Run.Group, v.Run.ID)
+	cost := stage.BossAP
+	if monster == stage.Boss && v.Run.Generation == math.MaxUint64 {
+		return nil, nil, nil, ErrInvalidRequest
+	}
+	for i, id := range stage.Monsters {
+		if id == monster {
+			cost = stage.AP[i]
+		}
+	}
+	costs, err := r.costs(ctx, stage, cost)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	resolved, err := r.graph.Resolve(r.design.Monsters[monster].Rewards[deck])
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	rewards := []gamedata.Reward{}
+	for _, reward := range resolved {
+		rewards = append(rewards, gamedata.Reward(reward))
+	}
+	var extra []gamedata.Reward
+	rate := r.bonusRate(stage.Group)
+	if rate > 0 {
+		for _, reward := range rewards {
+			if reward.Count > math.MaxInt32/rate {
+				return nil, nil, nil, fmt.Errorf("world: SkyWay bonus overflow")
+			}
+			reward.Count = reward.Count * rate / 100
+			if reward.Count > 0 {
+				extra = append(extra, reward)
+			}
+		}
+	}
+	bundle, err := r.economy.Apply(ctx, instance, costs, rewards)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	var bonus []byte
+	if len(extra) > 0 {
+		bonus, err = r.economy.Apply(ctx, instance+":bonus", nil, extra)
+		if err != nil {
+			return nil, nil, nil, err
+		}
+	}
+	updates := [][]byte{r.monster(monster, false)}
+	if monster == stage.Boss {
+		if r.bossProgress != nil {
+			if err = r.bossProgress(ctx, stage.PositionGroup, stage.Difficulty); err != nil {
+				return nil, nil, nil, err
+			}
+		}
+		st := v.Groups[strconv.FormatUint(stage.Group, 10)]
+		st.Maximum = max(st.Maximum, int(stage.Difficulty))
+		v.Groups[strconv.FormatUint(stage.Group, 10)] = st
+		v.Run.Generation++
+		v.Run.Defeated = nil
+		for _, id := range stage.Monsters {
+			updates = append(updates, r.monster(id, true))
+		}
+	} else {
+		v.Run.Defeated = append(v.Run.Defeated, monster)
+		if len(v.Run.Defeated) == len(stage.Monsters) {
+			updates = append(updates, r.monster(stage.Boss, true))
+		}
+	}
+	v.Receipts[key] = skyWayReceipt{Request: []byte(fingerprint), Response: bundle, Bonus: bonus, Monsters: updates}
+	if err = r.save(ctx, v); err != nil {
+		return nil, nil, nil, err
+	}
+	return bundle, bonus, updates, nil
+}
+func (r *skyWayRuntime) bonusRate(group uint64) uint64 {
+	day := uint64(r.now().UTC().Weekday())
+	for _, schedule := range r.schedules {
+		if schedule.Group == group && slices.Contains(schedule.Days, day) {
+			return schedule.Bonus
+		}
+	}
+	return 0
+}
+func (s *Service) SkyWayDispatchEligibility(ctx command.Context, d *gamedata.DispatchDesign) error {
+	if err := s.skyWayPack(ctx, int(d.Pack)); err != nil {
+		return err
+	}
+	if !s.packCompleteFor(int(d.Pack)) {
+		return fmt.Errorf("world: SkyWay dispatch requires completed introductory quests")
+	}
+	stage, ok := s.skyway.design.Stage(d.TypeGroup, d.TypeID)
+	if !ok {
+		return ErrInvalidRequest
+	}
+	v, err := s.skyway.load(ctx)
+	if err != nil {
+		return err
+	}
+	st, ok := v.Groups[strconv.FormatUint(stage.Group, 10)]
+	if !ok || st.Maximum < int(stage.Difficulty) {
+		return fmt.Errorf("world: SkyWay dispatch requires selected boss clear")
+	}
+	return nil
+}
+func (s *Service) skyWayMap(ctx command.Context, pack int) (int, bool, error) {
+	if s.skyway == nil || pack != s.skyway.design.Pack {
+		return 0, false, nil
+	}
+	v, err := s.skyway.load(ctx)
+	if err != nil {
+		return 0, true, err
+	}
+	stage, ok := s.skyway.design.Stage(v.Run.Group, v.Run.ID)
+	return int(stage.Map), ok, nil
+}
+
+func (s *Service) SkyWayDispatchCosts(ctx command.Context, d *gamedata.DispatchDesign, count uint64) ([]gamedata.Reward, error) {
+	if s.skyway == nil {
+		return nil, ErrInvalidRequest
+	}
+	stage, ok := s.skyway.design.Stage(d.TypeGroup, d.TypeID)
+	if !ok || count > math.MaxInt32/d.AP {
+		return nil, ErrInvalidRequest
+	}
+	return s.skyway.costs(ctx, stage, d.AP*count)
+}
+
+func (s *Service) AttachSkyWayProgress(boss func(command.Context, uint64, uint64) error, attempt func(command.Context, uint64) error) {
+	s.skyway.bossProgress, s.skyway.battleAttempt = boss, attempt
+}
+func (s *Service) SkyWayBattleStarted(ctx command.Context, mode uint64, receipt string) error {
+	if !gamedata.IsSkyWayMode(mode) {
+		return nil
+	}
+	r := s.skyway
+	if r == nil || receipt == "" {
+		return ErrInvalidRequest
+	}
+	v, err := r.load(ctx)
+	if err != nil {
+		return err
+	}
+	key := "attempt:" + receipt
+	if _, ok := v.Receipts[key]; ok {
+		return nil
+	}
+	if r.battleAttempt != nil {
+		if err = r.battleAttempt(ctx, mode-8); err != nil {
+			return err
+		}
+	}
+	v.Receipts[key] = skyWayReceipt{Request: []byte(strconv.FormatUint(mode, 10))}
+	return r.save(ctx, v)
+}
+func (s *Service) SkyWayDispatchExchange(ctx command.Context, identity string, costs, rewards []gamedata.Reward) ([]byte, error) {
+	return s.skyway.economy.Apply(ctx, identity, costs, rewards)
+}
+func (s *Service) SkyWayDispatchBonus(d *gamedata.DispatchDesign, rewards []gamedata.BattleReward) ([]gamedata.BattleReward, error) {
+	rate := s.skyway.bonusRate(d.TypeGroup)
+	out := append([]gamedata.BattleReward(nil), rewards...)
+	for i, r := range out {
+		if r.Count > math.MaxInt32/(100+rate) {
+			return nil, ErrInvalidRequest
+		}
+		out[i].Count = r.Count * (100 + rate) / 100
+	}
+	return out, nil
+}

go/internal/server/domain/world/talent_effects.go

@@ -30,6 +30,9 @@ func (s *Service) currentFieldMap(ctx command.Context, pack int) (int, error) {
 	if !s.packUnlocked(ctx, pack) {
 		return 0, ErrInvalidRequest
 	}
+	if mapID, found, err := s.skyWayMap(ctx, pack); found || err != nil {
+		return mapID, err
+	}
 	if saved, ok := s.state.Position(); ok && saved.PackID == pack && saved.Difficulty == s.questDifficulty(pack) && saved.Position.MapID > 0 {
 		return saved.Position.MapID, nil
 	}

go/internal/server/domain/world/world.go

@@ -167,7 +167,7 @@ type Service struct {
 	fieldBuffs         map[uint64]gamedata.FieldBuffDesign
 	talentPackInfo     func(ctx command.Context, _ int) ([]byte, error)
 	overwhelmAuthorize func(ctx command.Context, _ string, _ uint64) error
-	overwhelmSky       []gamedata.SkyWayOverwhelmRule
+	skyway             *skyWayRuntime
 	overwhelmQuest     func(int, int) (gamedata.OverwhelmQuestRule, error)
 	overwhelmHunting   interface {
 		ValidateBattle(ctx command.Context, _ int, _ uint64, _ uint64, _ uint64) error
@@ -231,12 +231,14 @@ func (s *Service) questsFor(ctx command.Context, packID int) (map[int]gamedata.Q
 	if _, found, err := s.resolveEventFieldPack(ctx, packID); err == nil && found {
 		return map[int]gamedata.QuestDesign{}, true
 	}
-	if _, exists := s.fieldPacks[packID]; exists {
-		return map[int]gamedata.QuestDesign{}, true
-	}
 	if s.storyCatalog != nil {
 		pack, found := s.storyCatalog.Packs[packID]
-		return pack.Quests, found
+		if found {
+			return pack.Quests, true
+		}
+	}
+	if _, exists := s.fieldPacks[packID]; exists {
+		return map[int]gamedata.QuestDesign{}, true
 	}
 	return nil, false
 }

plugins/LocalIdentity/FieldRewardPosition.cs

@@ -0,0 +1,103 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using BD2.GameNames;
+using BepInEx.Logging;
+using gamfs;
+using HarmonyLib;
+using Proto.Net;
+using UnityEngine.SceneManagement;
+
+namespace Bd2LocalIdentity;
+
+internal static class FieldRewardPosition
+{
+    private static readonly HashSet<FieldRewardObjectController> Pending = [];
+    private static ManualLogSource Log;
+
+    internal static void Install(Harmony harmony, ManualLogSource logger)
+    {
+        Log = logger;
+        harmony.Patch(Game.Method(() => FieldPacket.SendFieldObjectRewardRequest(null, true)),
+            prefix: new HarmonyMethod(typeof(FieldRewardPosition), nameof(SaveBeforeReward)));
+    }
+
+    private static bool SaveBeforeReward(FieldRewardObjectController __0, bool __1)
+    {
+        if (__0 == null || MiniGameHubSupporter.IsPlayEventHubOrMiniEventHub() ||
+            (FieldRewardObjectController.EFieldRewardObjectGroupType)__0.FieldRewardObjectGroupDTO.Type ==
+            FieldRewardObjectController.EFieldRewardObjectGroupType.LostCoin)
+        {
+            return true;
+        }
+        if (Pending.Contains(__0))
+        {
+            return false;
+        }
+        GameFieldManager field = GameFieldManager.Instance;
+        if (UsesDedicatedPosition(field))
+        {
+            return true;
+        }
+        int packId = SG.Pack?.PlayingPackID ?? 0;
+        Scene scene = __0.gameObject.scene;
+        if (IsReady(field, packId, scene))
+        {
+            FieldPacket.SendSaveUserPositionRequest(packId, false, true);
+            return true;
+        }
+        if (field == null || packId <= 0 || !scene.IsValid() || !scene.isLoaded)
+        {
+            Log.LogWarning("Field reward skipped without a loaded field: pack=" + packId);
+            return false;
+        }
+        Pending.Add(__0);
+        field.StartCoroutine(WaitForPosition(field, __0, __1, packId, scene));
+        return false;
+    }
+
+    private static bool UsesDedicatedPosition(GameFieldManager field)
+    {
+        var packType = (Define_PackType)(SG.Pack?.EnterPackDTO?.PackType ?? -1);
+        return packType is Define_PackType.PackHidden or Define_PackType.PackIb ||
+            (packType == Define_PackType.PackSkyWay && field?.CurrentMapInfo?.MapType == 1) ||
+            (packType == Define_PackType.PackEvilCastle && EvilCastleManager.Instance != null &&
+                EvilCastleInfo.IsEvilCastleBType(EvilCastleManager.Instance.CurrentEvilCastleType));
+    }
+
+    private static bool IsReady(GameFieldManager field, int packId, Scene scene)
+    {
+        return field != null && field.PlayerController != null && field.IsLoadedField &&
+            !field.IsMoveMapProcessing && field.CurrentMapInfo != null &&
+            packId > 0 && field.CurrentMapInfo.PackId == packId && SG.Net != null &&
+            scene.IsValid() && scene.isLoaded && scene == UnityEngine.SceneManagement.SceneManager.GetActiveScene() &&
+            string.Equals(field.CurrentMapScenePath, scene.name, StringComparison.Ordinal);
+    }
+
+    private static IEnumerator WaitForPosition(GameFieldManager field,
+        FieldRewardObjectController reward, bool showIndicator, int packId, Scene scene)
+    {
+        try
+        {
+            // The caller finishes its interaction state after the patched method returns.
+            yield return null;
+            while (field != null && reward != null && scene.isLoaded &&
+                GameFieldManager.Instance == field && SG.Pack != null &&
+                SG.Pack.PlayingPackID == packId && reward.gameObject.scene == scene)
+            {
+                if (IsReady(field, packId, scene))
+                {
+                    Pending.Remove(reward);
+                    FieldPacket.SendFieldObjectRewardRequest(reward, showIndicator);
+                    yield break;
+                }
+                yield return null;
+            }
+            Log.LogWarning("Deferred field reward cancelled after its field changed: pack=" + packId);
+        }
+        finally
+        {
+            Pending.Remove(reward);
+        }
+    }
+}

plugins/LocalIdentity/Plugin.cs

@@ -64,6 +64,7 @@ public sealed class Plugin : BaseUnityPlugin
             TryInstall("age-gate persistence", () => LocalAccountPolicy.InstallAgeGatePersistence(harmony));
             TryInstall("database diagnostics", () => ClientDiagnostics.InstallDatabaseDiagnostics(harmony));
             TryInstall("commission navigation completion", () => CommissionNavigation.Install(harmony, Logger));
+            TryInstall("field reward position ordering", () => FieldRewardPosition.Install(harmony, Logger));
             Logger.LogInfo("Local identity active: AppManager.IsPlatformLogin => false");
         }
         catch (Exception ex)