pre cw with probe and a bunch script to read game behavior

internal/common/player_cosmetics.go

@@ -0,0 +1,56 @@
+package common
+
+import (
+	"encoding/json"
+	"fmt"
+	"sync"
+)
+
+type PlayerCosmetics struct {
+	ClientVersion string `json:"client_version"`
+	OutfitItems   []struct {
+		ItemID     uint32 `json:"item_id"`
+		PileLimit  uint32 `json:"pile_limit"`
+		OwnedCount uint32 `json:"owned_count"`
+	} `json:"outfit_items"`
+	Skins []struct {
+		ID       uint32 `json:"id"`
+		AvatarID uint32 `json:"avatar_id"`
+	} `json:"skins"`
+}
+
+var cosmeticsOnce sync.Once
+var cosmeticsData PlayerCosmetics
+var cosmeticsError error
+
+func LoadPlayerCosmetics() (*PlayerCosmetics, error) {
+	cosmeticsOnce.Do(func() {
+		raw, err := ReadResourceFile("resources/PlayerCosmetics.json")
+		if err != nil {
+			cosmeticsError = err
+			return
+		}
+		if err = json.Unmarshal(raw, &cosmeticsData); err != nil {
+			cosmeticsError = err
+			return
+		}
+		cfg, err := LoadRuntimeConfig()
+		if err != nil {
+			cosmeticsError = err
+			return
+		}
+		if cfg.ClientVersion != cosmeticsData.ClientVersion || len(cosmeticsData.OutfitItems) == 0 {
+			cosmeticsError = fmt.Errorf("missing or mismatched PlayerCosmetics resource")
+			return
+		}
+		seen := map[uint32]bool{}
+		for _, item := range cosmeticsData.OutfitItems {
+			if item.ItemID == 0 || item.OwnedCount == 0 || item.OwnedCount > item.PileLimit || seen[item.ItemID] {
+				cosmeticsError = fmt.Errorf("invalid outfit item %d", item.ItemID)
+				return
+			}
+			seen[item.ItemID] = true
+		}
+	})
+	return &cosmeticsData, cosmeticsError
+}