export mapblock indexing functions

mapblock.go

@@ -37,12 +37,12 @@ func (mb *MapBlock) IsEmpty() bool {
 }
 
 func (mb *MapBlock) GetNodeId(x, y, z int) int {
-	pos := getNodePos(x, y, z)
+	pos := GetNodePos(x, y, z)
 	return mb.Mapdata.ContentId[pos]
 }
 
 func (mb *MapBlock) GetParam2(x, y, z int) int {
-	pos := getNodePos(x, y, z)
+	pos := GetNodePos(x, y, z)
 	return mb.Mapdata.Param2[pos]
 }
 

metadata.go

@@ -13,7 +13,7 @@ func NewMetadata() *Metadata {
 }
 
 func (md *Metadata) GetMetadata(x, y, z int) map[string]string {
-	return md.GetPairsMap(getNodePos(x, y, z))
+	return md.GetPairsMap(GetNodePos(x, y, z))
 }
 
 func (md *Metadata) GetPairsMap(pos int) map[string]string {
@@ -37,7 +37,7 @@ func (md *Metadata) GetInventoryMap(pos int) map[string]*Inventory {
 }
 
 func (md *Metadata) GetInventoryMapAtPos(x, y, z int) map[string]*Inventory {
-	return md.GetInventoryMap(getNodePos(x, y, z))
+	return md.GetInventoryMap(GetNodePos(x, y, z))
 }
 
 func (md *Metadata) GetInventory(pos int, name string) *Inventory {

util.go

@@ -1,10 +1,12 @@
 package mapparser
 
-func getNodePos(x, y, z int) int {
+// converts a vector to an integer for indexing the internal mapblock positions
+func GetNodePos(x, y, z int) int {
 	return x + (y * 16) + (z * 256)
 }
 
-func fromNodePos(pos int) (int, int, int) {
+// converts the index back to a vector
+func FromNodePos(pos int) (int, int, int) {
 	x := pos % 16
 	pos /= 16
 	y := pos % 16

util_test.go

@@ -6,9 +6,9 @@ import (
 )
 
 func TestToNodePos(t *testing.T) {
-	pos := getNodePos(5, 8, 12)
+	pos := GetNodePos(5, 8, 12)
 
-	x, y, z := fromNodePos(pos)
+	x, y, z := FromNodePos(pos)
 	fmt.Println(pos)
 
 	if x != 5 {