Remove SetItemRuntimeID method and update item mapping initialization

cmd/dfmapping/main.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"github.com/samber/lo"
+	"github.com/sandertv/gophertunnel/minecraft/nbt"
+	"io"
+	"net/http"
+	"os"
+)
+
+func main() {
+	fmt.Println("Downloading vanilla items NBT file...")
+	resp, err := http.Get("https://github.com/df-mc/dragonfly/raw/refs/heads/master/server/world/vanilla_items.nbt")
+	if err != nil {
+		panic(err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		panic(fmt.Errorf("failed to download vanilla items NBT file: %s", resp.Status))
+	}
+	bytes, err := io.ReadAll(resp.Body)
+	if err != nil {
+		panic(fmt.Errorf("failed to read vanilla items NBT file: %w", err))
+	}
+
+	var m map[string]struct {
+		RuntimeID      int32          `nbt:"runtime_id"`
+		ComponentBased bool           `nbt:"component_based"`
+		Version        int32          `nbt:"version"`
+		Data           map[string]any `nbt:"data,omitempty"`
+	}
+	if err := nbt.Unmarshal(bytes, &m); err != nil {
+		panic(fmt.Errorf("failed to unmarshal vanilla items NBT file: %w", err))
+	}
+
+	type itemEntry struct {
+		RuntimeID      int16  `json:"runtime_id"`
+		ComponentBased bool   `json:"component_based"`
+		Version        *uint8 `json:"version"`
+		Data           string `json:"component_nbt,omitempty"`
+	}
+
+	m2 := make(map[string]itemEntry)
+	defData := make(map[string]any)
+	for k, v := range m {
+		var data string
+		if v.Data == nil {
+			v.Data = defData
+		}
+		dataBytes, err := nbt.Marshal(v.Data)
+		if err != nil {
+			panic(fmt.Errorf("failed to marshal component NBT for item %s: %w", k, err))
+		}
+		data = base64.StdEncoding.EncodeToString(dataBytes)
+		m2[k] = itemEntry{
+			RuntimeID:      int16(v.RuntimeID),
+			ComponentBased: v.ComponentBased,
+			Version:        lo.ToPtr(uint8(v.Version)),
+			Data:           data,
+		}
+	}
+	jsonData, err := json.MarshalIndent(m2, "", "    ")
+	if err != nil {
+		panic(fmt.Errorf("failed to marshal item data to JSON: %w", err))
+	}
+	fmt.Println("Writing item data to dragonfly_items.json...")
+	if err := os.WriteFile("dragonfly_items.json", jsonData, 0644); err != nil {
+		panic(fmt.Errorf("failed to write item data to dragonfly_items.json: %w", err))
+	}
+	fmt.Println("Item data written to dragonfly_items.json successfully.")
+}