Always check for empty arrays. For loop processes them.

src/engine/objects/ItemTemplate.java

@@ -78,9 +78,10 @@ public class ItemTemplate {
 
             obj_name = (String) jsonObject.get("obj_name");
 
-            // Reading floats from an array
+            // Reading floats from an array (note always check for empty arrays)
 
             JSONArray scaleData = (JSONArray) jsonObject.get("obj_scale");
+            if (scaleData.isEmpty() == false)
                 obj_scale = new Vector3fImmutable(((Double) scaleData.get(0)).floatValue(), ((Double) scaleData.get(1)).floatValue(),
                         ((Double) scaleData.get(2)).floatValue());
 
@@ -131,10 +132,10 @@ public class ItemTemplate {
             item_render_object_female = ((Long) jsonObject.get("item_render_object_female")).intValue();
             item_health_full = ((Double) jsonObject.get("item_health_full")).floatValue();
 
-            Object skills_used = jsonObject.get("item_skill_used");
+            Object skill_used = jsonObject.get("item_skill_used");
 
-            if (skills_used instanceof String) {
-                String skilString = (String) skills_used;
+            if (skill_used instanceof String) {
+                String skilString = (String) skill_used;
                 skilString = skilString.replaceAll("\\s", "");
                 skilString = skilString.replaceAll(",", "");
                 item_skill_used.add(Enum.CharacterSkills.valueOf(skilString));
@@ -171,6 +172,7 @@ public class ItemTemplate {
 
                 JSONArray weapon_damage = (JSONArray) item_weapon.get("weapon_damage");
 
+                if (weapon_damage.isEmpty() == false)
                     for (Object o : weapon_damage) {
                         JSONObject damage_entry = (JSONObject) o;
                         Enum.SourceType sourceType = Enum.SourceType.valueOf(((String) damage_entry.get("damage_type")).toUpperCase());
@@ -200,6 +202,7 @@ public class ItemTemplate {
 
             JSONArray skill_required = (JSONArray) jsonObject.get("item_skill_req");
 
+            if (skill_required.isEmpty() == false)
                 for (Object o : skill_required) {
                     JSONObject skill_req = (JSONObject) o;
                     String skill_type = (String) skill_req.get("skill_type");
@@ -213,6 +216,7 @@ public class ItemTemplate {
             boolean restrict = ((Boolean) race_required.get("restrict"));
             JSONArray races = (JSONArray) race_required.get("races");
 
+            if (races.isEmpty() == false)
                 for (Object o : races) {
                     String race = (String) o;
                     race = race.replaceAll("\\s", "");
@@ -229,6 +233,7 @@ public class ItemTemplate {
             restrict = ((Boolean) class_required.get("restrict"));
             JSONArray classes = (JSONArray) class_required.get("classes");
 
+            if (classes.isEmpty() == false)
                 for (Object o : classes) {
                     String classEntry = (String) o;
                     classEntry = classEntry.replaceAll("\\s", "");
@@ -244,6 +249,7 @@ public class ItemTemplate {
             restrict = ((Boolean) disc_required.get("restrict"));
             JSONArray discs = (JSONArray) disc_required.get("discs");
 
+            if (discs.isEmpty() == false)
                 for (Object o : discs) {
                     String disc = (String) o;
                     disc = disc.replaceAll("\\s", "");
@@ -260,6 +266,7 @@ public class ItemTemplate {
 
             JSONArray powerActions = (JSONArray) jsonObject.get("item_user_power_action");
 
+            if (powerActions.isEmpty() == false)
                 for (Object o : powerActions) {
                     JSONObject powerActionEntry = (JSONObject) o;
                     String power = (String) powerActionEntry.get("power");