entity/projectile/IceBomb.php

<?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\entity\projectile;
 
use pocketmine\block\Block;
use pocketmine\block\BlockTypeIds;
use pocketmine\block\VanillaBlocks;
use pocketmine\event\entity\ProjectileHitEvent;
use pocketmine\item\VanillaItems;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\RayTraceResult;
use pocketmine\math\Vector3;
use pocketmine\network\mcpe\protocol\types\entity\EntityIds;
use pocketmine\world\particle\ItemBreakParticle;
use pocketmine\world\sound\IceBombHitSound;
 
class IceBomb extends Throwable{
    public static function getNetworkTypeId() : string{ return EntityIds::ICE_BOMB; }
 
    public function getResultDamage() : int{
        return -1;
    }
 
    protected function calculateInterceptWithBlock(Block $block, Vector3 $start, Vector3 $end) : ?RayTraceResult{
        if($block->getTypeId() === BlockTypeIds::WATER){
            $pos = $block->getPosition();
 
            return AxisAlignedBB::one()->offset($pos->x, $pos->y, $pos->z)->calculateIntercept($start, $end);
        }
 
        return parent::calculateInterceptWithBlock($block, $start, $end);
    }
 
    protected function onHit(ProjectileHitEvent $event) : void{
        $world = $this->getWorld();
        $pos = $this->location;
 
        $world->addSound($pos, new IceBombHitSound());
        $itemBreakParticle = new ItemBreakParticle(VanillaItems::ICE_BOMB());
        for($i = 0; $i < 6; ++$i){
            $world->addParticle($pos, $itemBreakParticle);
        }
    }
 
    protected function onHitBlock(Block $blockHit, RayTraceResult $hitResult) : void{
        parent::onHitBlock($blockHit, $hitResult);
 
        $pos = $blockHit->getPosition();
        $world = $pos->getWorld();
        $posX = $pos->getFloorX();
        $posY = $pos->getFloorY();
        $posZ = $pos->getFloorZ();
 
        $ice = VanillaBlocks::ICE();
        for($x = $posX - 1; $x <= $posX + 1; $x++){
            for($y = $posY - 1; $y <= $posY + 1; $y++){
                for($z = $posZ - 1; $z <= $posZ + 1; $z++){
                    if($world->getBlockAt($x, $y, $z)->getTypeId() === BlockTypeIds::WATER){
                        $world->setBlockAt($x, $y, $z, $ice);
                    }
                }
            }
        }
    }
}