<?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\entity\Entity;
use pocketmine\entity\EntityFactory;
use pocketmine\entity\object\PrimedTNT;
use pocketmine\entity\projectile\Arrow;
use pocketmine\item\Durable;
use pocketmine\item\enchantment\Enchantment;
use pocketmine\item\FlintSteel;
use pocketmine\item\Item;
use pocketmine\math\Vector3;
use pocketmine\Player;
use pocketmine\utils\Random;
use function cos;
use function sin;
use const M_PI;

class TNT extends Solid{

	/** @var bool */
	protected $unstable = false; //TODO: Usage unclear, seems to be a weird hack in vanilla

	public function readStateFromData(int $id, int $stateMeta) : void{
		$this->unstable = $stateMeta !== 0;
	}

	protected function writeStateToMeta() : int{
		return $this->unstable ? 1 : 0;
	}

	public function getStateBitmask() : int{
		return 0b1;
	}

	public function getHardness() : float{
		return 0;
	}

	public function onBreak(Item $item, ?Player $player = null) : bool{
		if($this->unstable){
			$this->ignite();
			return true;
		}
		return parent::onBreak($item, $player);
	}

	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
		if($item instanceof FlintSteel or $item->hasEnchantment(Enchantment::FIRE_ASPECT())){
			if($item instanceof Durable){
				$item->applyDamage(1);
			}
			$this->ignite();
			return true;
		}

		return false;
	}

	public function hasEntityCollision() : bool{
		return true;
	}

	public function onEntityInside(Entity $entity) : void{
		if($entity instanceof Arrow and $entity->isOnFire()){
			$this->ignite();
		}
	}

	public function ignite(int $fuse = 80) : void{
		$this->getLevel()->setBlock($this, BlockFactory::get(BlockIds::AIR));

		$mot = (new Random())->nextSignedFloat() * M_PI * 2;
		$nbt = EntityFactory::createBaseNBT($this->add(0.5, 0, 0.5), new Vector3(-sin($mot) * 0.02, 0.2, -cos($mot) * 0.02));
		$nbt->setShort("Fuse", $fuse);

		/** @var PrimedTNT $tnt */
		$tnt = EntityFactory::create(PrimedTNT::class, $this->getLevel(), $nbt);
		$tnt->spawnToAll();
	}

	public function getFlameEncouragement() : int{
		return 15;
	}

	public function getFlammability() : int{
		return 100;
	}

	public function onIncinerate() : void{
		$this->ignite();
	}
}