Fix mall shop purchases

src/main/java/emu/nebula/data/resources/MallShopDef.java

@@ -4,6 +4,7 @@ import com.google.gson.annotations.SerializedName;
 
 import emu.nebula.data.BaseDef;
 import emu.nebula.data.ResourceType;
+import emu.nebula.game.inventory.ItemParamMap;
 import lombok.Getter;
 
 @Getter
@@ -12,12 +13,26 @@ public class MallShopDef extends BaseDef {
     @SerializedName("Id")
     private String IdString;
     private int Stock;
+    
+    private int ExchangeItemId;
+    private int ExchangeItemQty;
+    
     private int ItemId;
-    private int CurrencyItemId;
     private int ItemQty;
     
+    private transient ItemParamMap products;
+    
     @Override
     public int getId() {
         return IdString.hashCode();
     }
+    
+    @Override
+    public void onLoad() {
+        this.products = new ItemParamMap();
+        
+        if (this.ItemId > 0) {
+            this.products.add(this.ItemId, this.ItemQty);
+        }
+    }
 }