Fixed trapdoor rotation

src/data/bedrock/blockstate/BlockStateDeserializerHelper.php

@@ -186,7 +186,7 @@ final class BlockStateDeserializerHelper{
 	/** @throws BlockStateDeserializeException */
 	public static function decodeTrapdoor(Trapdoor $block, BlockStateReader $in) : Trapdoor{
 		return $block
-			->setFacing($in->readLegacyHorizontalFacing())
+			->setFacing($in->read5MinusHorizontalFacing())
 			->setTop($in->readBool(BlockStateNames::UPSIDE_DOWN_BIT))
 			->setOpen($in->readBool(BlockStateNames::OPEN_BIT));
 	}

src/data/bedrock/blockstate/BlockStateReader.php

@@ -158,6 +158,19 @@ final class BlockStateReader{
 		]);
 	}
 
+	/**
+	 * This is for trapdoors, because Mojang botched the conversion in 1.13
+	 * @throws BlockStateDeserializeException
+	 */
+	public function read5MinusHorizontalFacing() : int{
+		return $this->parseFacingValue($this->readInt(BlockStateNames::DIRECTION), [
+			0 => Facing::EAST,
+			1 => Facing::WEST,
+			2 => Facing::SOUTH,
+			3 => Facing::NORTH
+		]);
+	}
+
 	/** @throws BlockStateDeserializeException */
 	public function readColor() : DyeColor{
 		//	 * color (StringTag) = black, blue, brown, cyan, gray, green, light_blue, lime, magenta, orange, pink, purple, red, silver, white, yellow

src/data/bedrock/blockstate/BlockStateSerializerHelper.php

@@ -237,7 +237,7 @@ final class BlockStateSerializerHelper{
 
 	public static function encodeTrapdoor(Trapdoor $block, BlockStateWriter $out) : BlockStateWriter{
 		return $out
-			->writeLegacyHorizontalFacing($block->getFacing())
+			->write5MinusHorizontalFacing($block->getFacing())
 			->writeBool(BlockStateNames::UPSIDE_DOWN_BIT, $block->isTop())
 			->writeBool(BlockStateNames::OPEN_BIT, $block->isOpen());
 	}

src/data/bedrock/blockstate/BlockStateWriter.php

@@ -118,6 +118,20 @@ final class BlockStateWriter{
 		return $this;
 	}
 
+	/**
+	 * This is for trapdoors, because Mojang botched the conversion in 1.13
+	 * @return $this
+	 */
+	public function write5MinusHorizontalFacing(int $value) : self{
+		return $this->writeInt(BlockStateNames::DIRECTION, match($value){
+			Facing::EAST => 0,
+			Facing::WEST => 1,
+			Facing::SOUTH => 2,
+			Facing::NORTH => 3,
+			default => throw new BlockStateSerializeException("Invalid horizontal facing $value")
+		});
+	}
+
 	/** @return $this */
 	public function writeColor(DyeColor $color) : self{
 		$this->writeString(BlockStateNames::COLOR, match($color->id()){