Added candles and cakes with candles

src/block/utils/CandleTrait.php

@@ -0,0 +1,99 @@
+<?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\block\Block;
+use pocketmine\data\runtime\RuntimeDataReader;
+use pocketmine\data\runtime\RuntimeDataWriter;
+use pocketmine\entity\projectile\Projectile;
+use pocketmine\item\Durable;
+use pocketmine\item\enchantment\VanillaEnchantments;
+use pocketmine\item\Item;
+use pocketmine\item\ItemTypeIds;
+use pocketmine\math\RayTraceResult;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
+use pocketmine\world\sound\FireExtinguishSound;
+use pocketmine\world\sound\FlintSteelSound;
+
+trait CandleTrait{
+	private bool $lit = false;
+
+	public function getRequiredStateDataBits() : int{ return 1; }
+
+	protected function decodeState(RuntimeDataReader $r) : void{
+		$this->lit = $r->readBool();
+	}
+
+	protected function encodeState(RuntimeDataWriter $w) : void{
+		$w->writeBool($this->lit);
+	}
+
+	public function getLightLevel() : int{
+		return $this->lit ? 3 : 0;
+	}
+
+	public function isLit() : bool{ return $this->lit; }
+
+	/** @return $this */
+	public function setLit(bool $lit) : self{
+		$this->lit = $lit;
+		return $this;
+	}
+
+	/** @see Block::onInteract() */
+	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		if($item->getTypeId() === ItemTypeIds::FLINT_AND_STEEL || $item->hasEnchantment(VanillaEnchantments::FIRE_ASPECT())){
+			if($this->lit){
+				return true;
+			}
+			if($item instanceof Durable){
+				$item->applyDamage(1);
+			}
+			$this->position->getWorld()->addSound($this->position, new FlintSteelSound());
+			$this->position->getWorld()->setBlock($this->position, $this->setLit(true));
+
+			return true;
+		}
+		if($item->isNull()){ //candle can only be extinguished with an empty hand
+			if(!$this->lit){
+				return true;
+			}
+			$this->position->getWorld()->addSound($this->position, new FireExtinguishSound());
+			$this->position->getWorld()->setBlock($this->position, $this->setLit(false));
+
+			return true;
+		}
+
+		//yes, this is intentional! in vanilla, if the candle is not interacted with, a block is placed.
+		return false;
+	}
+
+	/** @see Block::onProjectileHit() */
+	public function onProjectileHit(Projectile $projectile, RayTraceResult $hitResult) : void{
+		if(!$this->lit && $projectile->isOnFire()){
+			$this->position->getWorld()->setBlock($this->position, $this->setLit(true));
+		}
+	}
+}