Added candles and cakes with candles

src/block/Candle.php

@@ -0,0 +1,132 @@
+<?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\block\utils\CandleTrait;
+use pocketmine\data\runtime\RuntimeDataReader;
+use pocketmine\data\runtime\RuntimeDataWriter;
+use pocketmine\item\Item;
+use pocketmine\math\Axis;
+use pocketmine\math\AxisAlignedBB;
+use pocketmine\math\Facing;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
+use pocketmine\utils\AssumptionFailedError;
+use pocketmine\world\BlockTransaction;
+
+class Candle extends Transparent{
+	use CandleTrait {
+		decodeState as decodeLitState;
+		encodeState as encodeLitState;
+		getLightLevel as getBaseLightLevel;
+	}
+
+	public const MIN_COUNT = 1;
+	public const MAX_COUNT = 4;
+
+	private int $count = self::MIN_COUNT;
+
+	public function getRequiredStateDataBits() : int{
+		return 3;
+	}
+
+	protected function decodeState(RuntimeDataReader $r) : void{
+		$this->decodeLitState($r);
+		$this->count = $r->readBoundedInt(2, self::MIN_COUNT, self::MAX_COUNT);
+	}
+
+	protected function encodeState(RuntimeDataWriter $w) : void{
+		$this->encodeLitState($w);
+		$w->writeBoundedInt(2, self::MIN_COUNT, self::MAX_COUNT, $this->count);
+	}
+
+	public function getCount() : int{ return $this->count; }
+
+	/** @return $this */
+	public function setCount(int $count) : self{
+		if($count < self::MIN_COUNT || $count > self::MAX_COUNT){
+			throw new \InvalidArgumentException("Count must be in range " . self::MIN_COUNT . " ... " . self::MAX_COUNT);
+		}
+		$this->count = $count;
+		return $this;
+	}
+
+	public function getLightLevel() : int{
+		return $this->getBaseLightLevel() * $this->count;
+	}
+
+	protected function recalculateCollisionBoxes() : array{
+		return [
+			(match($this->count){
+				1 => AxisAlignedBB::one()
+					->squash(Axis::X, 7 / 16)
+					->squash(Axis::Z, 7 / 16),
+				2 => AxisAlignedBB::one()
+					->squash(Axis::X, 5 / 16)
+					->trim(Facing::NORTH, 7 / 16) //0.3 thick on the Z axis
+					->trim(Facing::SOUTH, 6 / 16),
+				3 => AxisAlignedBB::one()
+					->trim(Facing::WEST, 5 / 16)
+					->trim(Facing::EAST, 6 / 16)
+					->trim(Facing::NORTH, 6 / 16)
+					->trim(Facing::SOUTH, 5 / 16),
+				4 => AxisAlignedBB::one()
+					->squash(Axis::X, 5 / 16)
+					->trim(Facing::NORTH, 5 / 16)
+					->trim(Facing::SOUTH, 6 / 16),
+				default => throw new AssumptionFailedError("Unreachable")
+			})->trim(Facing::UP, 10 / 16)
+		];
+	}
+
+	protected function getCandleIfCompatibleType(Block $block) : ?Candle{
+		return $block instanceof Candle && $block->isSameType($this) ? $block : null;
+	}
+
+	public function canBePlacedAt(Block $blockReplace, Vector3 $clickVector, int $face, bool $isClickedBlock) : bool{
+		$candle = $this->getCandleIfCompatibleType($blockReplace);
+		return $candle !== null ? $candle->count < self::MAX_COUNT : parent::canBePlacedAt($blockReplace, $clickVector, $face, $isClickedBlock);
+	}
+
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		$down = $blockReplace->getSide(Facing::DOWN);
+		if(!$down->getSupportType(Facing::UP)->hasCenterSupport()){
+			return false;
+		}
+		$existing = $this->getCandleIfCompatibleType($blockReplace);
+		if($existing !== null){
+			if($existing->count >= self::MAX_COUNT){
+				return false;
+			}
+
+			$this->count = $existing->count + 1;
+			$this->lit = $existing->lit;
+		}
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+	}
+
+	public function getDropsForCompatibleTool(Item $item) : array{
+		return [$this->asItem()->setCount($this->count)];
+	}
+}