PotatoCraft-Studio#248 Add piston protection as enhanced protection for shop

Author: sandtechnology

src/main/java/org/maxgamer/quickshop/listener/ShopProtectionListener.java

@@ -28,7 +28,12 @@
 import org.bukkit.entity.Entity;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
-import org.bukkit.event.block.*;
+import org.bukkit.event.block.BlockExplodeEvent;
+import org.bukkit.event.block.BlockFromToEvent;
+import org.bukkit.event.block.BlockPistonExtendEvent;
+import org.bukkit.event.block.BlockRedstoneEvent;
+import org.bukkit.event.block.BlockSpreadEvent;
+import org.bukkit.event.block.SpongeAbsorbEvent;
 import org.bukkit.event.entity.EntityChangeBlockEvent;
 import org.bukkit.event.entity.EntityExplodeEvent;
 import org.bukkit.event.inventory.InventoryMoveItemEvent;
@@ -188,6 +193,21 @@ private boolean checkAndEnableMoveEvent(ConfigurationSection section) {
         return false;
     }
 
+    //Prevent skulker box or shop sign being pushed, see https://github.com/PotatoCraft-Studio/QuickShop-Reremake/issues/248
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
+    public void onBlockBeingPushed(BlockPistonExtendEvent event) {
+        if (!useEnhanceProtection) {
+            return;
+        }
+        for (org.bukkit.block.Block block : event.getBlocks()) {
+            Shop shop = getShopRedstone(block.getLocation(), true);
+            if (shop != null) {
+                event.setCancelled(true);
+                return;
+            }
+        }
+    }
+
     @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
     public void onBlockExplode(BlockExplodeEvent e) {
         for (int i = 0, a = e.blockList().size(); i < a; i++) {