feat: Added module to load region files

loading/load_region.go

@@ -0,0 +1,71 @@
+package loading
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+
+	"git.nicholasnovak.io/nnovak/spatial-db/world"
+	"github.com/Tnze/go-mc/save"
+	"github.com/Tnze/go-mc/save/region"
+	"github.com/spf13/cobra"
+)
+
+type SectorPos struct {
+	x, y int
+}
+
+var outputDir string
+
+func init() {
+	LoadRegionFileCommand.Flags().StringVar(&outputDir, "output", ".", "The output directory for the files")
+}
+
+var LoadRegionFileCommand = &cobra.Command{
+	Use: "load",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		regionFile, err := region.Open(args[0])
+		if err != nil {
+			return err
+		}
+		defer regionFile.Close()
+
+		validSectors := []SectorPos{}
+
+		for i := 0; i < 32; i++ {
+			for j := 0; j < 32; j++ {
+				if regionFile.ExistSector(i, j) {
+					validSectors = append(validSectors, SectorPos{i, j})
+				}
+			}
+		}
+
+		for _, sectorPos := range validSectors {
+			data, err := regionFile.ReadSector(sectorPos.x, sectorPos.y)
+			if err != nil {
+				return err
+			}
+
+			var chunk save.Chunk
+			if err := chunk.Load(data); err != nil {
+				return err
+			}
+
+			var chunkData world.ChunkData
+			chunkData.FromMCAChunk(chunk)
+
+			outfile, err := os.OpenFile(filepath.Join(outputDir, fmt.Sprintf("p.%d.%d.chunk", chunkData.Pos.X, chunkData.Pos.Z)), os.O_WRONLY|os.O_CREATE, 0644)
+			if err != nil {
+				log.Fatal(err)
+			}
+			if err := json.NewEncoder(outfile).Encode(chunkData); err != nil {
+				log.Fatal(err)
+			}
+			outfile.Close()
+		}
+
+		return nil
+	},
+}