Implemented Big & Small dripleaf (#5835)

src/block/SmallDripleaf.php

@@ -0,0 +1,170 @@
+<?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\HorizontalFacingTrait;
+use pocketmine\block\utils\SupportType;
+use pocketmine\data\runtime\RuntimeDataDescriber;
+use pocketmine\event\block\StructureGrowEvent;
+use pocketmine\item\Fertilizer;
+use pocketmine\item\Item;
+use pocketmine\math\Facing;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
+use pocketmine\world\BlockTransaction;
+use pocketmine\world\Position;
+use function mt_rand;
+
+class SmallDripleaf extends Transparent{
+	use HorizontalFacingTrait;
+
+	protected bool $top = false;
+
+	public function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
+		$w->horizontalFacing($this->facing);
+		$w->bool($this->top);
+	}
+
+	public function isTop() : bool{
+		return $this->top;
+	}
+
+	/** @return $this */
+	public function setTop(bool $top) : self{
+		$this->top = $top;
+		return $this;
+	}
+
+	private function canBeSupportedBy(Block $block) : bool{
+		//TODO: Moss
+		//TODO: Small Dripleaf also can be placed on dirt, coarse dirt, farmland, grass blocks,
+		// podzol, rooted dirt, mycelium, and mud if these blocks are underwater (needs waterlogging)
+		return $block->getTypeId() === BlockTypeIds::CLAY;
+	}
+
+	public function onNearbyBlockChange() : void{
+		if(!$this->top && !$this->canBeSupportedBy($this->getSide(Facing::DOWN))){
+			$this->position->getWorld()->useBreakOn($this->position);
+			return;
+		}
+		$face = $this->top ? Facing::DOWN : Facing::UP;
+		if(!$this->getSide($face)->hasSameTypeId($this)){
+			$this->position->getWorld()->useBreakOn($this->position);
+		}
+	}
+
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		$block = $blockReplace->getSide(Facing::UP);
+		if($block->getTypeId() !== BlockTypeIds::AIR || !$this->canBeSupportedBy($blockReplace->getSide(Facing::DOWN))){
+			return false;
+		}
+		if($player !== null){
+			$this->facing = Facing::opposite($player->getHorizontalFacing());
+		}
+
+		$tx->addBlock($block->getPosition(), VanillaBlocks::SMALL_DRIPLEAF()
+			->setFacing($this->facing)
+			->setTop(true)
+		);
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
+	}
+
+	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
+		if($item instanceof Fertilizer && $this->grow($player)){
+			$item->pop();
+			return true;
+		}
+		return false;
+	}
+
+	private function canGrowTo(Position $pos) : bool{
+		$world = $pos->getWorld();
+		if(!$world->isInWorld($pos->getFloorX(), $pos->getFloorY(), $pos->getFloorZ())){
+			return false;
+		}
+		$block = $world->getBlock($pos);
+		return $block->hasSameTypeId($this) || $block->getTypeId() === BlockTypeIds::AIR;
+	}
+
+	private function grow(?Player $player) : bool{
+		$bottomBlock = $this->top ? $this->getSide(Facing::DOWN) : $this;
+		if(!$this->hasSameTypeId($bottomBlock)){
+			return false;
+		}
+		$world = $this->position->getWorld();
+		$tx = new BlockTransaction($world);
+		$height = mt_rand(2, 5);
+		$grown = 0;
+		for($i = 0; $i < $height; $i++){
+			$pos = $bottomBlock->getSide(Facing::UP, $i)->getPosition();
+			if(!$this->canGrowTo($pos)){
+				break;
+			}
+			$block = ++$grown < $height && $this->canGrowTo($pos->getSide(Facing::UP)) ?
+				VanillaBlocks::BIG_DRIPLEAF_STEM() :
+				VanillaBlocks::BIG_DRIPLEAF_HEAD();
+			$tx->addBlock($pos, $block->setFacing($this->facing));
+		}
+		if($grown > 1){
+			$ev = new StructureGrowEvent($bottomBlock, $tx, $player);
+			$ev->call();
+			if(!$ev->isCancelled()){
+				return $tx->apply();
+			}
+		}
+
+		return false;
+	}
+
+	public function getAffectedBlocks() : array{
+		$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
+		if($other->hasSameTypeId($this)){
+			return [$this, $other];
+		}
+		return parent::getAffectedBlocks();
+	}
+
+	public function getDropsForCompatibleTool(Item $item) : array{
+		if(!$this->top){
+			return [$this->asItem()];
+		}
+		return [];
+	}
+
+	public function getFlameEncouragement() : int{
+		return 15;
+	}
+
+	public function getFlammability() : int{
+		return 100;
+	}
+
+	public function getSupportType(int $facing) : SupportType{
+		return SupportType::NONE();
+	}
+
+	protected function recalculateCollisionBoxes() : array{
+		return [];
+	}
+}