SurvivalBlockBreakHandler.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\player;
 
use pocketmine\block\Block;
use pocketmine\entity\animation\ArmSwingAnimation;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\network\mcpe\protocol\LevelEventPacket;
use pocketmine\network\mcpe\protocol\types\LevelEvent;
use pocketmine\world\particle\BlockPunchParticle;
use pocketmine\world\sound\BlockPunchSound;
use function abs;
 
final class SurvivalBlockBreakHandler{
 
    public const DEFAULT_FX_INTERVAL_TICKS = 5;
 
    private int $fxTicker = 0;
    private float $breakSpeed;
    private float $breakProgress = 0;
 
    public function __construct(
        private Player $player,
        private Vector3 $blockPos,
        private Block $block,
        private int $targetedFace,
        private int $maxPlayerDistance,
        private int $fxTickInterval = self::DEFAULT_FX_INTERVAL_TICKS
    ){
        $this->breakSpeed = $this->calculateBreakProgressPerTick();
        if($this->breakSpeed > 0){
            $this->player->getWorld()->broadcastPacketToViewers(
                $this->blockPos,
                LevelEventPacket::create(LevelEvent::BLOCK_START_BREAK, (int) (65535 * $this->breakSpeed), $this->blockPos)
            );
        }
    }
 
    private function calculateBreakProgressPerTick() : float{
        if(!$this->block->getBreakInfo()->isBreakable()){
            return 0.0;
        }
        //TODO: improve this to take stuff like swimming, ladders, enchanted tools into account, fix wrong tool break time calculations for bad tools (pmmp/PocketMine-MP#211)
        $breakTimePerTick = $this->block->getBreakInfo()->getBreakTime($this->player->getInventory()->getItemInHand()) * 20;
 
        if($breakTimePerTick > 0){
            return 1 / $breakTimePerTick;
        }
        return 1;
    }
 
    public function update() : bool{
        if($this->player->getPosition()->distanceSquared($this->blockPos->add(0.5, 0.5, 0.5)) > $this->maxPlayerDistance ** 2){
            return false;
        }
 
        $newBreakSpeed = $this->calculateBreakProgressPerTick();
        if(abs($newBreakSpeed - $this->breakSpeed) > 0.0001){
            $this->breakSpeed = $newBreakSpeed;
            //TODO: sync with client
        }
 
        $this->breakProgress += $this->breakSpeed;
 
        if(($this->fxTicker++ % $this->fxTickInterval) === 0 && $this->breakProgress < 1){
            $this->player->getWorld()->addParticle($this->blockPos, new BlockPunchParticle($this->block, $this->targetedFace));
            $this->player->getWorld()->addSound($this->blockPos, new BlockPunchSound($this->block));
            $this->player->broadcastAnimation(new ArmSwingAnimation($this->player), $this->player->getViewers());
        }
 
        return $this->breakProgress < 1;
    }
 
    public function getBlockPos() : Vector3{
        return $this->blockPos;
    }
 
    public function getTargetedFace() : int{
        return $this->targetedFace;
    }
 
    public function setTargetedFace(int $face) : void{
        Facing::validate($face);
        $this->targetedFace = $face;
    }
 
    public function getBreakSpeed() : float{
        return $this->breakSpeed;
    }
 
    public function getBreakProgress() : float{
        return $this->breakProgress;
    }
 
    public function __destruct(){
        if($this->player->getWorld()->isInLoadedTerrain($this->blockPos)){
            $this->player->getWorld()->broadcastPacketToViewers(
                $this->blockPos,
                LevelEventPacket::create(LevelEvent::BLOCK_STOP_BREAK, 0, $this->blockPos)
            );
        }
    }
}