package structure (#8):

- move iron_golem.go into d2sirongolem package

d2s.go

@@ -10,6 +10,7 @@ import (
 	"github.com/gucio321/d2d2s/d2scorpse"
 	"github.com/gucio321/d2d2s/d2sdifficulty"
 	"github.com/gucio321/d2d2s/d2senums"
+	"github.com/gucio321/d2d2s/d2sirongolem"
 	"github.com/gucio321/d2d2s/d2sitems"
 	"github.com/gucio321/d2d2s/datautils"
 )
@@ -63,7 +64,7 @@ type D2S struct {
 	Items      *d2sitems.Items
 	Corpse     *d2scorpse.Corpse
 	// necromancer only
-	IronGolem *IronGolem
+	IronGolem *d2sirongolem.IronGolem
 }
 
 // New creates a new D2S structure
@@ -78,7 +79,7 @@ func New() *D2S {
 		Stats:      &Stats{},
 		Items:      &d2sitems.Items{},
 		Corpse:     d2scorpse.New(),
-		IronGolem:  &IronGolem{},
+		IronGolem:  d2sirongolem.New(),
 	}
 
 	return result
@@ -254,7 +255,7 @@ func Unmarshal(data []byte) (*D2S, error) {
 	// iron golem for necromancer
 	if result.Class == d2senums.CharacterClassNecromancer && result.Status.Expansion {
 		if err := result.IronGolem.Load(sr); err != nil {
-			return nil, err
+			return nil, fmt.Errorf("error loading iron golem: %w", err)
 		}
 	}
 

d2sirongolem/doc.go

@@ -0,0 +1,2 @@
+// Package d2sirongolem stores iron golem's data if necromancer
+package d2sirongolem

iron_golem.go → d2sirongolem/iron_golem.go

@@ -1,4 +1,4 @@
-package d2d2s
+package d2sirongolem
 
 import (
 	"errors"
@@ -12,6 +12,15 @@ import (
 
 const golemHeaderID = "kf"
 
+// New creates a new IronGolem
+func New() *IronGolem {
+	result := &IronGolem{
+		Item: &d2sitems.Item{},
+	}
+
+	return result
+}
+
 // IronGolem represents an iron golem
 type IronGolem struct {
 	Item *d2sitems.Item