fix #77 by checking if the block is a solid

Author: dresnite

plugin.yml

@@ -3,5 +3,5 @@ description: A powerful core for SkyBlock servers
 author: GiantQuartz
 website: twitter.com/GiantQuartz
 main: room17\SkyBlock\SkyBlock
-version: 2.1.2
+version: 2.1.3
 api: [3.0.0]

src/room17/SkyBlock/SkyBlockListener.php

@@ -16,6 +16,7 @@
 
 namespace room17\SkyBlock;
 
+use pocketmine\block\Solid;
 use pocketmine\event\block\BlockBreakEvent;
 use pocketmine\event\block\BlockPlaceEvent;
 use pocketmine\event\entity\EntityDamageByEntityEvent;
@@ -97,7 +98,7 @@ public function onBreak(BlockBreakEvent $event): void {
             if(!$isle->canInteract($session)) {
                 $session->sendTranslatedPopup("MUST_ME_MEMBER");
                 $event->setCancelled();
-            } elseif(!$event->isCancelled()) {
+            } elseif(!($event->isCancelled()) and $event->getBlock() instanceof Solid) {
                 $isle->destroyBlock();
             }
         }
@@ -114,7 +115,7 @@ public function onPlace(BlockPlaceEvent $event): void {
             if(!$isle->canInteract($session)) {
                 $session->sendTranslatedPopup("MUST_ME_MEMBER");
                 $event->setCancelled();
-            } elseif(!$event->isCancelled()) {
+            } elseif(!($event->isCancelled()) and $event->getBlock() instanceof Solid) {
                 $isle->addBlock();
             }
         }