From e388ac9c8b133fbf0382ef56f6ab75f04249a670 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sat, 20 Jul 2019 17:48:09 +0100
Subject: [PATCH] implemented lantern

---
 src/pocketmine/block/BlockFactory.php        |  2 +-
 src/pocketmine/block/BlockLegacyMetadata.php |  2 +
 src/pocketmine/block/Lantern.php             | 80 ++++++++++++++++++++
 src/pocketmine/block/VanillaBlocks.php       |  2 +
 4 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 src/pocketmine/block/Lantern.php

diff --git a/src/pocketmine/block/BlockFactory.php b/src/pocketmine/block/BlockFactory.php
index e67b2b646..839e39345 100644
--- a/src/pocketmine/block/BlockFactory.php
+++ b/src/pocketmine/block/BlockFactory.php
@@ -224,6 +224,7 @@ class BlockFactory{
 		self::register(new Trapdoor(new BID(Ids::IRON_TRAPDOOR), "Iron Trapdoor", new BlockBreakInfo(5.0, BlockToolType::PICKAXE, ToolTier::WOOD()->getHarvestLevel(), 25.0)));
 		self::register(new ItemFrame(new BID(Ids::FRAME_BLOCK, 0, ItemIds::FRAME, TileItemFrame::class), "Item Frame"));
 		self::register(new Ladder(new BID(Ids::LADDER), "Ladder"));
+		self::register(new Lantern(new BID(Ids::LANTERN), "Lantern", new BlockBreakInfo(5.0, BlockToolType::PICKAXE, ToolTier::WOOD()->getHarvestLevel())));
 		self::register(new Solid(new BID(Ids::LAPIS_BLOCK), "Lapis Lazuli Block", new BlockBreakInfo(3.0, BlockToolType::PICKAXE, ToolTier::STONE()->getHarvestLevel())));
 		self::register(new LapisOre(new BID(Ids::LAPIS_ORE), "Lapis Lazuli Ore"));
 		self::register(new Lava(new BIDFlattened(Ids::FLOWING_LAVA, Ids::STILL_LAVA), "Lava"));
@@ -599,7 +600,6 @@ class BlockFactory{
 		//TODO: minecraft:jigsaw
 		//TODO: minecraft:jukebox
 		//TODO: minecraft:kelp
-		//TODO: minecraft:lantern
 		//TODO: minecraft:lava_cauldron
 		//TODO: minecraft:lectern
 		//TODO: minecraft:lit_blast_furnace
diff --git a/src/pocketmine/block/BlockLegacyMetadata.php b/src/pocketmine/block/BlockLegacyMetadata.php
index 899e93554..60a336c4d 100644
--- a/src/pocketmine/block/BlockLegacyMetadata.php
+++ b/src/pocketmine/block/BlockLegacyMetadata.php
@@ -95,6 +95,8 @@ interface BlockLegacyMetadata{
 
 	public const ITEM_FRAME_FLAG_HAS_MAP = 0x04;
 
+	public const LANTERN_FLAG_HANGING = 0x01;
+
 	public const LEAVES_FLAG_NO_DECAY = 0x04;
 	public const LEAVES_FLAG_CHECK_DECAY = 0x08;
 
diff --git a/src/pocketmine/block/Lantern.php b/src/pocketmine/block/Lantern.php
new file mode 100644
index 000000000..98ca830ee
--- /dev/null
+++ b/src/pocketmine/block/Lantern.php
@@ -0,0 +1,80 @@
+<?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;
+
+use pocketmine\item\Item;
+use pocketmine\math\AxisAlignedBB;
+use pocketmine\math\Facing;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
+use pocketmine\world\BlockTransaction;
+
+class Lantern extends Transparent{
+
+	/** @var bool */
+	protected $hanging = false;
+
+	public function readStateFromData(int $id, int $stateMeta) : void{
+		$this->hanging = ($stateMeta & BlockLegacyMetadata::LANTERN_FLAG_HANGING) !== 0;
+	}
+
+	protected function writeStateToMeta() : int{
+		return $this->hanging ? BlockLegacyMetadata::LANTERN_FLAG_HANGING : 0;
+	}
+
+	public function getStateBitmask() : int{
+		return 0b1;
+	}
+
+	public function getLightLevel() : int{
+		return 15;
+	}
+
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
+		return AxisAlignedBB::one()
+			->trim(Facing::UP,   $this->hanging ? 6 / 16 : 8 / 16)
+			->trim(Facing::DOWN, $this->hanging ? 2 / 16 : 0)
+			->squash(Facing::AXIS_X, 5 / 16)
+			->squash(Facing::AXIS_Z, 5 / 16);
+	}
+
+	protected function canAttachTo(Block $b) : bool{
+		return !$b->isTransparent();
+	}
+
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		if(!$this->canAttachTo($this->world->getBlock($blockReplace->up())) and !$this->canAttachTo($this->world->getBlock($blockReplace->down()))){
+			return false;
+		}
+
+		$this->hanging = ($face === Facing::DOWN or !$this->canAttachTo($this->world->getBlock($blockReplace->down())));
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+	}
+
+	public function onNearbyBlockChange() : void{
+		if(!$this->canAttachTo($this->world->getBlock($this->hanging ? $this->up() : $this->down()))){
+			$this->world->useBreakOn($this);
+		}
+	}
+}
diff --git a/src/pocketmine/block/VanillaBlocks.php b/src/pocketmine/block/VanillaBlocks.php
index 5423d458c..d14c05149 100644
--- a/src/pocketmine/block/VanillaBlocks.php
+++ b/src/pocketmine/block/VanillaBlocks.php
@@ -410,6 +410,7 @@ use function assert;
  * @method static WoodenTrapdoor JUNGLE_TRAPDOOR()
  * @method static Wood JUNGLE_WOOD()
  * @method static Ladder LADDER()
+ * @method static Lantern LANTERN()
  * @method static Solid LAPIS_LAZULI()
  * @method static LapisOre LAPIS_LAZULI_ORE()
  * @method static DoubleTallGrass LARGE_FERN()
@@ -1071,6 +1072,7 @@ final class VanillaBlocks{
 		self::register("jungle_trapdoor", BlockFactory::get(403));
 		self::register("jungle_wood", BlockFactory::get(467, 3));
 		self::register("ladder", BlockFactory::get(65, 2));
+		self::register("lantern", BlockFactory::get(463));
 		self::register("lapis_lazuli", BlockFactory::get(22));
 		self::register("lapis_lazuli_ore", BlockFactory::get(21));
 		self::register("large_fern", BlockFactory::get(175, 3));