Start using transactions for block placement

src/pocketmine/block/Anvil.php

@@ -34,6 +34,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Anvil extends Transparent implements Fallable{
 	use FallableTrait;
@@ -69,11 +70,11 @@ class Anvil extends Transparent implements Fallable{
 		return true;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::rotateY($player->getHorizontalFacing(), true);
 		}
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function tickFalling() : ?Block{

src/pocketmine/block/Banner.php

@@ -35,6 +35,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function assert;
 use function floor;
 
@@ -141,7 +142,7 @@ class Banner extends Transparent{
 		return null;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($item instanceof ItemBanner){
 			$this->baseColor = $item->getColor();
 			$this->setPatterns($item->getPatterns());
@@ -152,7 +153,7 @@ class Banner extends Transparent{
 				$this->rotation = $player !== null ? ((int) floor((($player->yaw + 180) * 16 / 360) + 0.5)) & 0x0f : 0;
 			}
 
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/BaseRail.php

@@ -28,6 +28,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function array_map;
 use function array_reverse;
 use function array_search;
@@ -96,9 +97,9 @@ abstract class BaseRail extends Flowable{
 		return 0b1111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockReplace->getSide(Facing::DOWN)->isTransparent()){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Bed.php

@@ -36,6 +36,7 @@ use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
 use pocketmine\utils\TextFormat;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\World;
 
 class Bed extends Transparent{
@@ -169,7 +170,7 @@ class Bed extends Transparent{
 
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($item instanceof ItemBed){ //TODO: the item should do this
 			$this->color = $item->getColor();
 		}
@@ -179,11 +180,9 @@ class Bed extends Transparent{
 
 			$next = $this->getSide($this->getOtherHalfSide());
 			if($next->canBeReplaced() and !$next->getSide(Facing::DOWN)->isTransparent()){
-				parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 				$nextState = clone $this;
 				$nextState->head = true;
-				$this->getWorld()->setBlock($next, $nextState);
-
+				$tx->addBlock($blockReplace, $this)->addBlock($next, $nextState);
 				return true;
 			}
 		}

src/pocketmine/block/Block.php

@@ -44,6 +44,7 @@ use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\mcpe\protocol\types\RuntimeBlockMapping;
 use pocketmine\Player;
 use pocketmine\plugin\Plugin;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\Position;
 use pocketmine\world\World;
 use function array_merge;
@@ -245,17 +246,19 @@ class Block extends Position implements BlockLegacyIds, Metadatable{
 	/**
 	 * Places the Block, using block space and block target, and side. Returns if the block has been placed.
 	 *
-	 * @param Item        $item
-	 * @param Block       $blockReplace
-	 * @param Block       $blockClicked
-	 * @param int         $face
-	 * @param Vector3     $clickVector
-	 * @param Player|null $player
+	 * @param BlockTransaction $tx
+	 * @param Item             $item
+	 * @param Block            $blockReplace
+	 * @param Block            $blockClicked
+	 * @param int              $face
+	 * @param Vector3          $clickVector
+	 * @param Player|null      $player
 	 *
 	 * @return bool
 	 */
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		return $this->getWorld()->setBlock($blockReplace, $this);
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		$tx->addBlock($blockReplace, $this);
+		return true;
 	}
 
 	public function onPostPlace() : void{

src/pocketmine/block/Button.php

@@ -28,6 +28,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\sound\RedstonePowerOffSound;
 use pocketmine\world\sound\RedstonePowerOnSound;
 
@@ -52,10 +53,10 @@ abstract class Button extends Flowable{
 		return 0b1111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		//TODO: check valid target block
 		$this->facing = $face;
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	abstract protected function getActivationTime() : int;

src/pocketmine/block/Cactus.php

@@ -33,6 +33,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Cactus extends Transparent{
 
@@ -113,7 +114,7 @@ class Cactus extends Transparent{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() === BlockLegacyIds::SAND or $down->getId() === BlockLegacyIds::CACTUS){
 			foreach(Facing::HORIZONTAL as $side){
@@ -122,7 +123,7 @@ class Cactus extends Transparent{
 				}
 			}
 
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Cake.php

@@ -32,6 +32,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Cake extends Transparent implements FoodSource{
 
@@ -61,10 +62,10 @@ class Cake extends Transparent implements FoodSource{
 			->trim(Facing::WEST, $this->bites / 8);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() !== BlockLegacyIds::AIR){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Carpet.php

@@ -28,6 +28,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Carpet extends Flowable{
 
@@ -43,10 +44,10 @@ class Carpet extends Flowable{
 		return AxisAlignedBB::one()->trim(Facing::UP, 15 / 16);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() !== BlockLegacyIds::AIR){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Chest.php

@@ -30,6 +30,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Chest extends Transparent{
 
@@ -57,12 +58,12 @@ class Chest extends Transparent{
 		return AxisAlignedBB::one()->contract(0.025, 0, 0.025)->trim(Facing::UP, 0.05);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onPostPlace() : void{

src/pocketmine/block/CocoaBlock.php

@@ -33,6 +33,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function mt_rand;
 
 class CocoaBlock extends Transparent{
@@ -72,10 +73,10 @@ class CocoaBlock extends Transparent{
 			->trim($this->facing, (11 - $this->age * 2) / 16); //outward face
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(Facing::axis($face) !== Facing::AXIS_Y and $blockClicked instanceof Wood and $blockClicked->getTreeType()->equals(TreeType::JUNGLE())){
 			$this->facing = $face;
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Crops.php

@@ -30,6 +30,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function mt_rand;
 
 abstract class Crops extends Flowable{
@@ -52,9 +53,9 @@ abstract class Crops extends Flowable{
 		return 0b111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($blockReplace->getSide(Facing::DOWN)->getId() === BlockLegacyIds::FARMLAND){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/DeadBush.php

@@ -28,6 +28,7 @@ use pocketmine\item\ItemFactory;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function mt_rand;
 
 class DeadBush extends Flowable{
@@ -36,9 +37,9 @@ class DeadBush extends Flowable{
 		parent::__construct($idInfo, $name, $breakInfo ?? BlockBreakInfo::instant(BlockToolType::TYPE_SHEARS, 1));
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$this->getSide(Facing::DOWN)->isTransparent()){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Door.php

@@ -105,7 +105,7 @@ class Door extends Transparent{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($face === Facing::UP){
 			$blockUp = $this->getSide(Facing::UP);
 			$blockDown = $this->getSide(Facing::DOWN);
@@ -127,10 +127,8 @@ class Door extends Transparent{
 			$topHalf = clone $this;
 			$topHalf->top = true;
 
-			$transaction = new BlockTransaction($this->world);
-			$transaction->addBlock($blockReplace, $this)->addBlock($blockUp, $topHalf);
-
-			return $transaction->apply();
+			$tx->addBlock($blockReplace, $this)->addBlock($blockUp, $topHalf);
+			return true;
 		}
 
 		return false;

src/pocketmine/block/DoublePlant.php

@@ -50,15 +50,13 @@ class DoublePlant extends Flowable{
 		return 0b1000;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$id = $blockReplace->getSide(Facing::DOWN)->getId();
 		if(($id === BlockLegacyIds::GRASS or $id === BlockLegacyIds::DIRT) and $blockReplace->getSide(Facing::UP)->canBeReplaced()){
 			$top = clone $this;
 			$top->top = true;
-
-			$transaction = new BlockTransaction($this->world);
-			$transaction->addBlock($blockReplace, $this)->addBlock($blockReplace->getSide(Facing::UP), $top);
-			return $transaction->apply();
+			$tx->addBlock($blockReplace, $this)->addBlock($blockReplace->getSide(Facing::UP), $top);
+			return true;
 		}
 
 		return false;

src/pocketmine/block/EndPortalFrame.php

@@ -30,6 +30,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class EndPortalFrame extends Solid{
 
@@ -63,10 +64,10 @@ class EndPortalFrame extends Solid{
 		return AxisAlignedBB::one()->trim(Facing::UP, 3 / 16);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 }

src/pocketmine/block/EndRod.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class EndRod extends Flowable{
 
@@ -58,13 +59,13 @@ class EndRod extends Flowable{
 		return 0b111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->facing = $face;
 		if($blockClicked instanceof EndRod and $blockClicked->facing === $this->facing){
 			$this->facing = Facing::opposite($face);
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function isSolid() : bool{

src/pocketmine/block/EnderChest.php

@@ -32,6 +32,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class EnderChest extends Transparent{
 
@@ -63,11 +64,11 @@ class EnderChest extends Transparent{
 		return AxisAlignedBB::one()->contract(0.025, 0, 0.025)->trim(Facing::UP, 0.05);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{

src/pocketmine/block/FenceGate.php

@@ -30,6 +30,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\sound\DoorSound;
 
 class FenceGate extends Transparent{
@@ -75,14 +76,14 @@ class FenceGate extends Transparent{
 		);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = $player->getHorizontalFacing();
 		}
 
 		$this->inWall = $this->checkInWall();
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onNearbyBlockChange() : void{

src/pocketmine/block/Flower.php

@@ -27,6 +27,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Flower extends Flowable{
 
@@ -34,10 +35,10 @@ class Flower extends Flowable{
 		parent::__construct($idInfo, $name, $breakInfo ?? BlockBreakInfo::instant());
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() === BlockLegacyIds::GRASS or $down->getId() === BlockLegacyIds::DIRT or $down->getId() === BlockLegacyIds::FARMLAND){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/FlowerPot.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function assert;
 
 class FlowerPot extends Flowable{
@@ -114,12 +115,12 @@ class FlowerPot extends Flowable{
 		return AxisAlignedBB::one()->contract(3 / 16, 0, 3 / 16)->trim(Facing::UP, 5 / 8);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($this->getSide(Facing::DOWN)->isTransparent()){
 			return false;
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onNearbyBlockChange() : void{

src/pocketmine/block/Furnace.php

@@ -30,6 +30,7 @@ use pocketmine\item\TieredTool;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Furnace extends Solid{
 	/** @var BlockIdentifierFlattened */
@@ -79,12 +80,12 @@ class Furnace extends Solid{
 		return $this;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{

src/pocketmine/block/GlazedTerracotta.php

@@ -30,6 +30,7 @@ use pocketmine\item\TieredTool;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class GlazedTerracotta extends Solid{
 
@@ -52,11 +53,11 @@ class GlazedTerracotta extends Solid{
 		return 0b111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 }

src/pocketmine/block/Hopper.php

@@ -31,6 +31,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Hopper extends Transparent{
 
@@ -67,10 +68,10 @@ class Hopper extends Transparent{
 		return $result;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->facing = $face === Facing::DOWN ? Facing::DOWN : Facing::opposite($face);
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{

src/pocketmine/block/ItemFrame.php

@@ -29,6 +29,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function lcg_value;
 
 class ItemFrame extends Flowable{
@@ -178,14 +179,14 @@ class ItemFrame extends Flowable{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($face === Facing::DOWN or $face === Facing::UP or !$blockClicked->isSolid()){
 			return false;
 		}
 
 		$this->facing = $face;
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function getDropsForCompatibleTool(Item $item) : array{

src/pocketmine/block/Ladder.php

@@ -30,6 +30,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Ladder extends Transparent{
 
@@ -76,10 +77,10 @@ class Ladder extends Transparent{
 	}
 
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockClicked->isTransparent() and Facing::axis($face) !== Facing::AXIS_Y){
 			$this->facing = $face;
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Leaves.php

@@ -30,6 +30,7 @@ use pocketmine\item\ItemFactory;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\World;
 use function mt_rand;
 
@@ -111,9 +112,9 @@ class Leaves extends Transparent{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->noDecay = true; //artificial leaves don't decay
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function getDrops(Item $item) : array{

src/pocketmine/block/Lever.php

@@ -28,6 +28,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\sound\RedstonePowerOffSound;
 use pocketmine\world\sound\RedstonePowerOnSound;
 
@@ -78,7 +79,7 @@ class Lever extends Flowable{
 		return 0b1111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockClicked->isSolid()){
 			return false;
 		}
@@ -93,7 +94,7 @@ class Lever extends Flowable{
 			$this->position = self::SIDE;
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onNearbyBlockChange() : void{

src/pocketmine/block/NetherWartPlant.php

@@ -30,6 +30,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function mt_rand;
 
 class NetherWartPlant extends Flowable{
@@ -53,10 +54,10 @@ class NetherWartPlant extends Flowable{
 		return 0b11;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() === BlockLegacyIds::SOUL_SAND){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Pumpkin.php

@@ -29,6 +29,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Pumpkin extends Solid{
 
@@ -51,10 +52,10 @@ class Pumpkin extends Solid{
 		return 0b11;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 }

src/pocketmine/block/RedMushroom.php

@@ -27,6 +27,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class RedMushroom extends Flowable{
 
@@ -44,10 +45,10 @@ class RedMushroom extends Flowable{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if(!$down->isTransparent()){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/RedstoneComparator.php

@@ -31,6 +31,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function assert;
 
 class RedstoneComparator extends Flowable{
@@ -147,12 +148,12 @@ class RedstoneComparator extends Flowable{
 		return AxisAlignedBB::one()->trim(Facing::UP, 7 / 8);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockReplace->getSide(Facing::DOWN)->isTransparent()){
 			if($player !== null){
 				$this->facing = Facing::opposite($player->getHorizontalFacing());
 			}
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/RedstoneOre.php

@@ -67,10 +67,6 @@ class RedstoneOre extends Solid{
 		return $this->lit ? 9 : 0;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		return $this->getWorld()->setBlock($this, $this, false);
-	}
-
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$this->lit){
 			$this->lit = true;

src/pocketmine/block/RedstoneRepeater.php

@@ -30,6 +30,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class RedstoneRepeater extends Flowable{
 	/** @var BlockIdentifierFlattened */
@@ -82,13 +83,13 @@ class RedstoneRepeater extends Flowable{
 		return $this;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockReplace->getSide(Facing::DOWN)->isTransparent()){
 			if($player !== null){
 				$this->facing = Facing::opposite($player->getHorizontalFacing());
 			}
 
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Sapling.php

@@ -30,6 +30,7 @@ use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
 use pocketmine\utils\Random;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\generator\object\Tree;
 use function mt_rand;
 
@@ -57,10 +58,10 @@ class Sapling extends Flowable{
 		return 0b1000;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() === BlockLegacyIds::GRASS or $down->getId() === BlockLegacyIds::DIRT or $down->getId() === BlockLegacyIds::FARMLAND){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/SeaPickle.php

@@ -27,6 +27,7 @@ use pocketmine\item\Item;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class SeaPickle extends Transparent{
 	/** @var int */
@@ -68,13 +69,13 @@ class SeaPickle extends Transparent{
 		return ($blockReplace instanceof SeaPickle and $blockReplace->count < 4) or parent::canBePlacedAt($blockReplace, $clickVector, $face, $isClickedBlock);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->underwater = false; //TODO: implement this once we have new water logic in place
 		if($blockReplace instanceof SeaPickle and $blockReplace->count < 4){
 			$this->count = $blockReplace->count + 1;
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{

src/pocketmine/block/Sign.php

@@ -33,6 +33,7 @@ use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
 use pocketmine\utils\TextFormat;
+use pocketmine\world\BlockTransaction;
 use function array_map;
 use function assert;
 use function floor;
@@ -109,14 +110,14 @@ class Sign extends Transparent{
 		return null;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($face !== Facing::DOWN){
 			$this->facing = $face;
 			if($face === Facing::UP){
 				$this->rotation = $player !== null ? ((int) floor((($player->yaw + 180) * 16 / 360) + 0.5)) & 0x0f : 0;
 			}
 
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Skull.php

@@ -33,6 +33,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function assert;
 use function floor;
 
@@ -93,7 +94,7 @@ class Skull extends Flowable{
 		return AxisAlignedBB::one()->contract(0.25, 0, 0.25)->trim(Facing::UP, 0.5);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($face === Facing::DOWN){
 			return false;
 		}
@@ -105,7 +106,7 @@ class Skull extends Flowable{
 		if($player !== null and $face === Facing::UP){
 			$this->rotation = ((int) floor(($player->yaw * 16 / 360) + 0.5)) & 0xf;
 		}
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function asItem() : Item{

src/pocketmine/block/Slab.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Slab extends Transparent{
 	/** @var BlockIdentifierFlattened */
@@ -104,7 +105,7 @@ class Slab extends Transparent{
 		return false;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($blockReplace instanceof Slab and !$blockReplace->slabType->equals(SlabType::DOUBLE()) and $blockReplace->isSameType($this) and (
 			($blockReplace->slabType->equals(SlabType::TOP()) and ($clickVector->y <= 0.5 or $face === Facing::UP)) or
 			($blockReplace->slabType->equals(SlabType::BOTTOM()) and ($clickVector->y >= 0.5 or $face === Facing::DOWN))
@@ -115,7 +116,7 @@ class Slab extends Transparent{
 			$this->slabType = (($face !== Facing::UP && $clickVector->y > 0.5) || $face === Facing::DOWN) ? SlabType::TOP() : SlabType::BOTTOM();
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	protected function recalculateBoundingBox() : ?AxisAlignedBB{

src/pocketmine/block/SnowLayer.php

@@ -33,6 +33,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function floor;
 use function max;
 
@@ -67,7 +68,7 @@ class SnowLayer extends Flowable implements Fallable{
 		return AxisAlignedBB::one()->trim(Facing::UP, $this->layers >= 4 ? 0.5 : 1);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($blockReplace instanceof SnowLayer){
 			if($blockReplace->layers >= 8){
 				return false;
@@ -76,7 +77,7 @@ class SnowLayer extends Flowable implements Fallable{
 		}
 		if($blockReplace->getSide(Facing::DOWN)->isSolid()){
 			//TODO: fix placement
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Stair.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Stair extends Transparent{
 	private const SHAPE_STRAIGHT = "straight";
@@ -104,12 +105,12 @@ class Stair extends Transparent{
 		) ? $side->facing : null;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = $player->getHorizontalFacing();
 		}
 		$this->upsideDown = (($clickVector->y > 0.5 and $face !== Facing::UP) or $face === Facing::DOWN);
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 }

src/pocketmine/block/Sugarcane.php

@@ -30,6 +30,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Sugarcane extends Flowable{
 
@@ -110,14 +111,14 @@ class Sugarcane extends Flowable{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
 		if($down->getId() === BlockLegacyIds::SUGARCANE_BLOCK){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}elseif($down->getId() === BlockLegacyIds::GRASS or $down->getId() === BlockLegacyIds::DIRT or $down->getId() === BlockLegacyIds::SAND){
 			foreach(Facing::HORIZONTAL as $side){
 				if($down->getSide($side) instanceof Water){
-					return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+					return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 				}
 			}
 		}

src/pocketmine/block/TallGrass.php

@@ -28,6 +28,7 @@ use pocketmine\item\ItemFactory;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function mt_rand;
 
 class TallGrass extends Flowable{
@@ -40,10 +41,10 @@ class TallGrass extends Flowable{
 		return true;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN)->getId();
 		if($down === BlockLegacyIds::GRASS or $down === BlockLegacyIds::DIRT){
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
 		return false;

src/pocketmine/block/Torch.php

@@ -28,6 +28,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class Torch extends Flowable{
 
@@ -63,13 +64,13 @@ class Torch extends Flowable{
 		}
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($blockClicked->canBeReplaced() and !$blockClicked->getSide(Facing::DOWN)->isTransparent()){
 			$this->facing = Facing::UP;
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}elseif($face !== Facing::DOWN and (!$blockClicked->isTransparent() or ($face === Facing::UP and ($blockClicked->getId() === BlockLegacyIds::FENCE or $blockClicked->getId() === BlockLegacyIds::COBBLESTONE_WALL)))){
 			$this->facing = $face;
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}else{
 			static $faces = [
 				Facing::SOUTH,
@@ -82,7 +83,7 @@ class Torch extends Flowable{
 				$block = $this->getSide($side);
 				if(!$block->isTransparent()){
 					$this->facing = Facing::opposite($side);
-					return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+					return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 				}
 			}
 		}

src/pocketmine/block/Trapdoor.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use pocketmine\world\sound\DoorSound;
 
 class Trapdoor extends Transparent{
@@ -60,7 +61,7 @@ class Trapdoor extends Transparent{
 		return AxisAlignedBB::one()->trim($this->open ? $this->facing : ($this->top ? Facing::DOWN : Facing::UP), 13 / 16);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$this->facing = Facing::opposite($player->getHorizontalFacing());
 		}
@@ -68,7 +69,7 @@ class Trapdoor extends Transparent{
 			$this->top = true;
 		}
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{

src/pocketmine/block/TripwireHook.php

@@ -29,6 +29,7 @@ use pocketmine\math\Bearing;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class TripwireHook extends Flowable{
 
@@ -59,11 +60,11 @@ class TripwireHook extends Flowable{
 		return 0b1111;
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(Facing::axis($face) !== Facing::AXIS_Y){
 			//TODO: check face is valid
 			$this->facing = $face;
-			return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 		return false;
 	}

src/pocketmine/block/Vine.php

@@ -29,6 +29,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 use function array_intersect_key;
 use function array_keys;
 use function count;
@@ -100,7 +101,7 @@ class Vine extends Flowable{
 		return [];
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$blockClicked->isSolid() or Facing::axis($face) === Facing::AXIS_Y){
 			return false;
 		}
@@ -108,7 +109,7 @@ class Vine extends Flowable{
 		$this->faces = $blockReplace instanceof Vine ? $blockReplace->faces : [];
 		$this->faces[Facing::opposite($face)] = true;
 
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onNearbyBlockChange() : void{

src/pocketmine/block/WaterLily.php

@@ -28,6 +28,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 class WaterLily extends Flowable{
 
@@ -39,11 +40,11 @@ class WaterLily extends Flowable{
 		return AxisAlignedBB::one()->contract(1 / 16, 0, 1 / 16)->trim(Facing::UP, 63 / 64);
 	}
 
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($blockClicked instanceof Water){
 			$up = $blockClicked->getSide(Facing::UP);
 			if($up->canBeReplaced()){
-				return parent::place($item, $up, $blockClicked, $face, $clickVector, $player);
+				return parent::place($tx, $item, $up, $blockClicked, $face, $clickVector, $player);
 			}
 		}
 

src/pocketmine/block/utils/PillarRotationTrait.php

@@ -28,6 +28,7 @@ use pocketmine\item\Item;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
+use pocketmine\world\BlockTransaction;
 
 trait PillarRotationTrait{
 
@@ -89,18 +90,19 @@ trait PillarRotationTrait{
 	/**
 	 * @see Block::place()
 	 *
-	 * @param Item        $item
-	 * @param Block       $blockReplace
-	 * @param Block       $blockClicked
-	 * @param int         $face
-	 * @param Vector3     $clickVector
-	 * @param Player|null $player
+	 * @param BlockTransaction $tx
+	 * @param Item             $item
+	 * @param Block            $blockReplace
+	 * @param Block            $blockClicked
+	 * @param int              $face
+	 * @param Vector3          $clickVector
+	 * @param Player|null      $player
 	 *
 	 * @return bool
 	 */
-	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->axis = Facing::axis($face);
 		/** @see Block::place() */
-		return parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 }

src/pocketmine/world/World.php

@@ -1830,15 +1830,19 @@ class World implements ChunkManager, Metadatable{
 			}
 		}
 
-		if(!$hand->place($item, $blockReplace, $blockClicked, $face, $clickVector, $player)){
+		$tx = new BlockTransaction($this);
+		if(!$hand->place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player) or !$tx->apply()){
 			return false;
 		}
-		$tile = $this->getTile($hand);
-		if($tile !== null){
-			//TODO: seal this up inside block placement
-			$tile->copyDataFromItem($item);
+		foreach($tx->getBlocks() as [$x, $y, $z, $_]){
+			$tile = $this->getTileAt($x, $y, $z);
+			if($tile !== null){
+				//TODO: seal this up inside block placement
+				$tile->copyDataFromItem($item);
+			}
+
+			$this->getBlockAt($x, $y, $z)->onPostPlace();
 		}
-		$hand->onPostPlace();
 
 		if($playSound){
 			$this->addSound($hand, new BlockPlaceSound($hand));