fix breaking block in ladder

Author: dexdurable

src/pocketmine/Player.php

@@ -1931,7 +1931,7 @@ public function handleDataPacket(DataPacket $packet){
 						$this->actionsNum['CRACK_BLOCK'] = 0;
 						if (!$this->isCreative()) {
 							$block = $this->level->getBlock(new Vector3($packet->x, $packet->y, $packet->z));
-							$breakTime = ceil($block->getBreakTime($this->inventory->getItemInHand()) * 20);
+							$breakTime = ceil($this->getBreakTime($block) * 20);
 							$fireBlock = $block->getSide($packet->face);
 							if ($fireBlock->getId() === Block::FIRE) {
 								$fireBlock->onUpdate(Level::BLOCK_UPDATE_TOUCH);
@@ -4344,7 +4344,7 @@ protected function crackBlock($packet) {
 		$isNeedSendPackets = $this->actionsNum['CRACK_BLOCK'] % 4 == 0;
 		$this->actionsNum['CRACK_BLOCK']++;
 
-		$breakTime = ceil($block->getBreakTime($this->inventory->getItemInHand()) * 20);
+		$breakTime = ceil($this->getBreakTime($block) * 20);
 		if ($this->actionsNum['CRACK_BLOCK'] >= $breakTime) {
 			$this->breakBlock($blockPos);
 		}
@@ -4364,6 +4364,17 @@ protected function crackBlock($packet) {
 		}
 	}
 
+	public function getBreakTime(Block $block, Item $item = null) {	
+		$item = $item??$this->inventory->getItemInHand();	
+		$breakTime = $block->getBreakTime($item);
+		$blockUnderPlayer = $this->level->getBlock(new Vector3(floor($this->x), floor($this->y) - 1, floor($this->z)));
+
+		if ($blockUnderPlayer->getId() == Block::LADDER || $blockUnderPlayer->getId() == Block::VINE || !$this->onGround) {					
+			$breakTime *= 5;
+		}	
+		return $breakTime;
+	}
+
 	/**
 	 * @minprotocol 120
 	 * @param SimpleTransactionData[] $transactionsData

src/pocketmine/level/Level.php

@@ -1205,7 +1205,7 @@ public function useBreakOn(Vector3 $vector, Item &$item = null, Player $player =
 				}
 			}
 
-			$breakTime = $player->isCreative() ? 0.15 : $target->getBreakTime($item);
+			$breakTime = $player->isCreative() ? 0.15 : $player->getBreakTime($target, $item);
 			if (!$ev->getInstaBreak() && ($player->lastBreak + $breakTime) >= microtime(true)) {
 				return false;
 			}