working block id mappings

mapblockparser/mapblock.go

@@ -5,11 +5,13 @@ type MapBlock struct {
 	Underground  bool
 	Mapdata      []byte
 	Metadata     Metadata
+	BlockMapping map[int]string
 }
 
 func NewMapblock() MapBlock {
 	mb := MapBlock{}
 	mb.Metadata = NewMetadata()
+	mb.BlockMapping = make(map[int]string)
 	return mb
 }
 

mapblockparser/parse.go

@@ -53,5 +53,39 @@ func Parse(data []byte) (*MapBlock, error) {
 		return nil, err
 	}
 
+	offset += count
+
+	//static objects
+
+	offset++ //static objects version
+	staticObjectsCount := readU16(data, offset)
+	offset += 2
+	for i := 0; i < staticObjectsCount; i++ {
+		offset += 13
+		dataSize := readU16(data, offset)
+		offset += dataSize + 2
+	}
+
+	//timestamp
+	offset += 4
+
+	//mapping version
+	offset++
+
+	numMappings := readU16(data, offset)
+	offset += 2
+	for i := 0; i < numMappings; i++ {
+		nodeId := readU16(data, offset)
+		offset += 2
+
+		nameLen := readU16(data, offset)
+		offset += 2
+
+		blockName := string(data[offset : offset+nameLen])
+		offset += nameLen
+
+		mapblock.BlockMapping[nodeId] = blockName
+	}
+
 	return &mapblock, nil
 }

mapblockparser/parse_test.go

@@ -1,6 +1,7 @@
 package mapblockparser
 
 import (
+	"fmt"
 	"io/ioutil"
 	"strconv"
 	"testing"
@@ -72,11 +73,15 @@ func TestParse2(t *testing.T) {
 		t.Error(err)
 	}
 
-	_, err = Parse(data)
+	mapblock, err := Parse(data)
 
 	if err != nil {
 		t.Error(err)
 	}
+
+	for k, v := range mapblock.BlockMapping {
+		fmt.Println("Key", k, "Value", v)
+	}
 }
 
 func TestParse3(t *testing.T) {