Improved item & drop-point checking + Dojo fixes + Duey revamp

Fixed some issues with items being dropped sometimes out-of-reach and in a weird way.
Improved item checking function, now looking up one-of-a-kind items properly.
Fixed some issues with dojo skills and possible exploits in dojo progression.
Improved Duey, now displaying better info to players.

src/client/inventory/Equip.java

@@ -120,10 +120,10 @@ public class Equip extends Item {
     }
 
     @Override
-    public byte getType() {
+    public byte getItemType() {
         return 1;
     }
-
+    
     public byte getUpgradeSlots() {
         return upgradeSlots;
     }

src/client/inventory/Item.java

@@ -21,6 +21,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 package client.inventory;
 
+import constants.ItemConstants;
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
@@ -93,7 +94,11 @@ public class Item implements Comparable<Item> {
         return quantity;
     }
 
-    public byte getType() {
+    public MapleInventoryType getInventoryType() {
+        return ItemConstants.getInventoryType(id);
+    }
+    
+    public byte getItemType() { // 1: equip, 3: pet, 2: other
         if (getPetId() > -1) {
             return 3;
         }

src/client/inventory/ItemFactory.java

@@ -133,7 +133,7 @@ public enum ItemFactory {
                     items.add(new Pair<>(item, mit));
                 }
             }
-
+            
             rs.close();
             ps.close();
             con.close();

src/client/inventory/MapleInventory.java

@@ -367,7 +367,7 @@ public class MapleInventory implements Iterable<Item> {
     }
     
     public static boolean checkSpot(MapleCharacter chr, Item item) {
-    	if (chr.getInventory(MapleInventoryType.getByType(item.getType())).isFull()) return false;
+    	if (chr.getInventory(item.getInventoryType()).isFull()) return false;
     	return true;
     }
     
@@ -437,7 +437,7 @@ public class MapleInventory implements Iterable<Item> {
     }
     
     public static boolean checkSpotsAndOwnership(MapleCharacter chr, List<Pair<Item, MapleInventoryType>> items, List<Integer> typesSlotsUsed) {
-        // assumption: no "UNDEFINED" or "EQUIPPED" items shall be tested here, all counts are >= 0.
+        //assumption: no "UNDEFINED" or "EQUIPPED" items shall be tested here, all counts are >= 0 and item list to be checked is a legal one.
         
         Map<Long, Short> rcvItems = new LinkedHashMap<>();
         Map<Long, Byte> rcvTypes = new LinkedHashMap<>();
@@ -493,7 +493,7 @@ public class MapleInventory implements Iterable<Item> {
         boolean isRing = false;
         Equip equip = null;
 	for (Item item : list()) {
-            if (item.getType() == MapleInventoryType.EQUIP.getType()) {
+            if (item.getInventoryType().equals(MapleInventoryType.EQUIP)) {
                 equip = (Equip) item;
                 isRing = equip.getRingId() > -1;
             }

src/client/inventory/ModifyInventory.java

@@ -1,7 +1,5 @@
 package client.inventory;
 
-import constants.ItemConstants;
-
 /**
  *
  * @author kevin
@@ -28,7 +26,7 @@ public class ModifyInventory {
     }
 
     public final int getInventoryType() {
-        return ItemConstants.getInventoryType(item.getItemId()).getType();
+        return item.getInventoryType().type;
     }
 
     public final short getPosition() {