PDC Upgrade

src/main/java/xyz/soukup/ecoCraftCore/commands/ShopCommand.java

@@ -75,6 +75,11 @@ public class ShopCommand {
             return 0;
         }
 
+        if (PDC.getInteger(sign, "shop") != null){
+            player.sendPlainMessage("tato cedule již je obchod");
+            return 0;
+        }
+
 
         VirtualChest virtualChest = VirtualChest.getOrCreate(chest);
         virtualChest.save();

src/main/java/xyz/soukup/ecoCraftCore/events/VirtualChestLogic.java

@@ -0,0 +1,4 @@
+package xyz.soukup.ecoCraftCore.events;
+
+public class VirtualChestLogic {
+}