Update GaCy-GO

internal/gameserver/peak_scene_overrides.go

@@ -0,0 +1,91 @@
+package gameserver
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strconv"
+
+	"gac-hkrpg-go/internal/common"
+)
+
+// These are adventure actor/placement identifiers, not battle wave monsters.
+// Their reference binary provenance is retained in the editable resource.
+// Applying the overlay never changes an existing session/run or a save file.
+func applyPeakSceneOverrides(data *ChallengeDataConfig) {
+	var catalog struct {
+		SourceKind string `json:"source_kind"`
+		BinaryHash string `json:"binary_sha256"`
+		Offset     string `json:"source_file_offset"`
+		Length     uint32 `json:"decoded_byte_length"`
+		Data       struct {
+			Groups []struct {
+				GroupID uint32 `json:"group_id"`
+				Stages  map[string]struct {
+					NPC      uint32 `json:"npc_monster_id"`
+					Entrance uint32 `json:"map_entrance_id"`
+					Group    uint32 `json:"maze_group_id"`
+				} `json:"stages"`
+			} `json:"challenge_peak_extra_data"`
+		} `json:"data"`
+	}
+	markAll := func(err error) {
+		for id, stage := range data.Peak {
+			stage.SceneResourceError = err.Error()
+			data.Peak[id] = stage
+		}
+		Log("[PEAK] scene override rejected: " + err.Error())
+	}
+	raw, err := common.ReadResourceFile("resources/ChallengePeakSceneOverrides.json")
+	if err != nil {
+		markAll(err)
+		return
+	}
+	if err := json.Unmarshal(raw, &catalog); err != nil {
+		markAll(err)
+		return
+	}
+	digest, err := hex.DecodeString(catalog.BinaryHash)
+	_, offsetErr := strconv.ParseUint(catalog.Offset, 0, 64)
+	if err != nil || len(digest) != 32 || offsetErr != nil || catalog.Length == 0 || catalog.SourceKind != "reference-server-embedded-data" {
+		markAll(fmt.Errorf("Peak scene override provenance is incomplete"))
+		return
+	}
+	res, err := common.GameRes()
+	if err != nil {
+		markAll(err)
+		return
+	}
+	seen := make(map[string]bool)
+	for _, group := range catalog.Data.Groups {
+		for id, row := range group.Stages {
+			stage, exists := data.Peak[id]
+			if !exists || seen[id] || group.GroupID == 0 || stage.GroupID != group.GroupID {
+				markAll(fmt.Errorf("Peak scene override has unknown, duplicate or mismatched stage %s", id))
+				return
+			}
+			seen[id] = true
+			stage.SceneResourceError = ""
+			if row.NPC == 0 || row.Entrance == 0 || row.Group == 0 {
+				stage.SceneResourceError = "Peak scene override has an empty actor/placement identifier"
+			} else if scenes := res.LevelOutputConfigs[row.Entrance]; len(scenes) == 0 {
+				stage.SceneResourceError = fmt.Sprintf("Peak entrance %d has no resource scene", row.Entrance)
+			} else {
+				_, scene, _ := firstSceneOfEntry(res, row.Entrance)
+				placement, ok := scene.Scenes[row.Group]
+				if !ok || len(placement.Monsters) == 0 {
+					stage.SceneResourceError = fmt.Sprintf("Peak entrance %d group %d has no resource monster placement", row.Entrance, row.Group)
+				}
+			}
+			stage.Entrance, stage.Group, stage.MonsterID = row.Entrance, row.Group, row.NPC
+			data.Peak[id] = stage
+		}
+	}
+	for id, stage := range data.Peak {
+		if !seen[id] {
+			stage.SceneResourceError = "Peak stage is missing from the scene override resource"
+			data.Peak[id] = stage
+		}
+	}
+	Log(fmt.Sprintf("[PEAK] scene override loaded stages=%d reference_sha256=%s; Client acceptance unverified", len(seen), catalog.BinaryHash))
+}