added StairShape enum

this has no practical value to plugins yet, but it will in the future.

src/pocketmine/block/Stair.php

@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\block\utils\BlockDataValidator;
+use pocketmine\block\utils\StairShape;
 use pocketmine\item\Item;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
@@ -32,18 +33,19 @@ use pocketmine\player\Player;
 use pocketmine\world\BlockTransaction;
 
 class Stair extends Transparent{
-	private const SHAPE_STRAIGHT = "straight";
-	private const SHAPE_INNER_LEFT = "inner_left";
-	private const SHAPE_INNER_RIGHT = "inner_right";
-	private const SHAPE_OUTER_LEFT = "outer_left";
-	private const SHAPE_OUTER_RIGHT = "outer_right";
 
 	/** @var int */
 	protected $facing = Facing::NORTH;
 	/** @var bool */
 	protected $upsideDown = false;
-	/** @var string */
+
-	protected $shape = self::SHAPE_STRAIGHT;
+	/** @var StairShape */
+	protected $shape;
+
+	public function __construct(BlockIdentifier $idInfo, string $name, BlockBreakInfo $breakInfo){
+		$this->shape = StairShape::STRAIGHT();
+		parent::__construct($idInfo, $name, $breakInfo);
+	}
 
 	protected function writeStateToMeta() : int{
 		return (5 - $this->facing) | ($this->upsideDown ? BlockLegacyMetadata::STAIR_FLAG_UPSIDE_DOWN : 0);
@@ -63,11 +65,11 @@ class Stair extends Transparent{
 
 		$clockwise = Facing::rotateY($this->facing, true);
 		if(($backFacing = $this->getPossibleCornerFacing(false)) !== null){
-			$this->shape = $backFacing === $clockwise ? self::SHAPE_OUTER_RIGHT : self::SHAPE_OUTER_LEFT;
+			$this->shape = $backFacing === $clockwise ? StairShape::OUTER_RIGHT() : StairShape::OUTER_LEFT();
 		}elseif(($frontFacing = $this->getPossibleCornerFacing(true)) !== null){
-			$this->shape = $frontFacing === $clockwise ? self::SHAPE_INNER_RIGHT : self::SHAPE_INNER_LEFT;
+			$this->shape = $frontFacing === $clockwise ? StairShape::INNER_RIGHT() : StairShape::INNER_LEFT();
 		}else{
-			$this->shape = self::SHAPE_STRAIGHT;
+			$this->shape = StairShape::STRAIGHT();
 		}
 	}
 
@@ -81,14 +83,14 @@ class Stair extends Transparent{
 			->trim(Facing::opposite($topStepFace), 0.5)
 			->trim(Facing::opposite($this->facing), 0.5);
 
-		if($this->shape === self::SHAPE_OUTER_LEFT or $this->shape === self::SHAPE_OUTER_RIGHT){
+		if($this->shape->equals(StairShape::OUTER_LEFT()) or $this->shape->equals(StairShape::OUTER_RIGHT())){
-			$topStep->trim(Facing::rotateY($this->facing, $this->shape === self::SHAPE_OUTER_LEFT), 0.5);
+			$topStep->trim(Facing::rotateY($this->facing, $this->shape->equals(StairShape::OUTER_LEFT())), 0.5);
-		}elseif($this->shape === self::SHAPE_INNER_LEFT or $this->shape === self::SHAPE_INNER_RIGHT){
+		}elseif($this->shape->equals(StairShape::INNER_LEFT()) or $this->shape->equals(StairShape::INNER_RIGHT())){
 			//add an extra cube
 			$bbs[] = AxisAlignedBB::one()
 				->trim(Facing::opposite($topStepFace), 0.5)
 				->trim($this->facing, 0.5) //avoid overlapping with main step
-				->trim(Facing::rotateY($this->facing, $this->shape === self::SHAPE_INNER_LEFT), 0.5);
+				->trim(Facing::rotateY($this->facing, $this->shape->equals(StairShape::INNER_LEFT())), 0.5);
 		}
 
 		$bbs[] = $topStep;

src/pocketmine/block/utils/StairShape.php

@@ -0,0 +1,51 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\block\utils;
+
+use pocketmine\utils\EnumTrait;
+
+/**
+ * This doc-block is generated automatically, do not modify it manually.
+ * This must be regenerated whenever enum members are added, removed or changed.
+ * @see EnumTrait::_generateMethodAnnotations()
+ *
+ * @method static self STRAIGHT()
+ * @method static self INNER_LEFT()
+ * @method static self INNER_RIGHT()
+ * @method static self OUTER_LEFT()
+ * @method static self OUTER_RIGHT()
+ */
+final class StairShape{
+	use EnumTrait;
+
+	protected static function setup() : iterable{
+		return [
+			new self("straight"),
+			new self("inner_left"),
+			new self("inner_right"),
+			new self("outer_left"),
+			new self("outer_right")
+		];
+	}
+}