BossEventPacket.php

<?php
 
/*
 * This file is part of BedrockProtocol.
 * Copyright (C) 2014-2022 PocketMine Team <https://github.com/pmmp/BedrockProtocol>
 *
 * BedrockProtocol 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.
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\protocol;
 
use pmmp\encoding\ByteBufferReader;
use pmmp\encoding\ByteBufferWriter;
use pmmp\encoding\LE;
use pmmp\encoding\VarInt;
use pocketmine\network\mcpe\protocol\serializer\CommonTypes;
use pocketmine\network\mcpe\protocol\types\BossBarColor;
 
class BossEventPacket extends DataPacket implements ClientboundPacket, ServerboundPacket{
    public const NETWORK_ID = ProtocolInfo::BOSS_EVENT_PACKET;
 
    public const TYPE_SHOW = 0;
    public const TYPE_REGISTER_PLAYER = 1;
    public const TYPE_HIDE = 2;
    public const TYPE_UNREGISTER_PLAYER = 3;
    public const TYPE_HEALTH_PERCENT = 4;
    public const TYPE_TITLE = 5;
    public const TYPE_PROPERTIES = 6;
    public const TYPE_TEXTURE = 7;
    public const TYPE_QUERY = 8;
 
    public int $bossActorUniqueId;
    public int $eventType;
 
    public int $playerActorUniqueId;
    public float $healthPercent;
    public string $title;
    public string $filteredTitle;
    public bool $darkenScreen;
    public int $color;
    public int $overlay;
 
    private static function base(int $bossActorUniqueId, int $eventId) : self{
        $result = new self;
        $result->bossActorUniqueId = $bossActorUniqueId;
        $result->eventType = $eventId;
        return $result;
    }
 
    public static function show(int $bossActorUniqueId, string $title, float $healthPercent, bool $darkenScreen = false, int $color = BossBarColor::PURPLE, int $overlay = 0) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_SHOW);
        $result->title = $title;
        $result->filteredTitle = $title;
        $result->healthPercent = $healthPercent;
        $result->darkenScreen = $darkenScreen;
        $result->color = $color;
        $result->overlay = $overlay;
        return $result;
    }
 
    public static function hide(int $bossActorUniqueId) : self{
        return self::base($bossActorUniqueId, self::TYPE_HIDE);
    }
 
    public static function registerPlayer(int $bossActorUniqueId, int $playerActorUniqueId) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_REGISTER_PLAYER);
        $result->playerActorUniqueId = $playerActorUniqueId;
        return $result;
    }
 
    public static function unregisterPlayer(int $bossActorUniqueId, int $playerActorUniqueId) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_UNREGISTER_PLAYER);
        $result->playerActorUniqueId = $playerActorUniqueId;
        return $result;
    }
 
    public static function healthPercent(int $bossActorUniqueId, float $healthPercent) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_HEALTH_PERCENT);
        $result->healthPercent = $healthPercent;
        return $result;
    }
 
    public static function title(int $bossActorUniqueId, string $title) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_TITLE);
        $result->title = $title;
        $result->filteredTitle = $title;
        return $result;
    }
 
    public static function properties(int $bossActorUniqueId, bool $darkenScreen, int $color = BossBarColor::PURPLE, int $overlay = 0) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_PROPERTIES);
        $result->darkenScreen = $darkenScreen;
        $result->color = $color;
        $result->overlay = $overlay;
        return $result;
    }
 
    public static function query(int $bossActorUniqueId, int $playerActorUniqueId) : self{
        $result = self::base($bossActorUniqueId, self::TYPE_QUERY);
        $result->playerActorUniqueId = $playerActorUniqueId;
        return $result;
    }
 
    protected function decodePayload(ByteBufferReader $in) : void{
        $this->bossActorUniqueId = CommonTypes::getActorUniqueId($in);
        $this->eventType = VarInt::readUnsignedInt($in);
        switch($this->eventType){
            case self::TYPE_REGISTER_PLAYER:
            case self::TYPE_UNREGISTER_PLAYER:
            case self::TYPE_QUERY:
                $this->playerActorUniqueId = CommonTypes::getActorUniqueId($in);
                break;
            case self::TYPE_SHOW:
                $this->title = CommonTypes::getString($in);
                $this->filteredTitle = CommonTypes::getString($in);
                $this->healthPercent = LE::readFloat($in);
            case self::TYPE_PROPERTIES:
                $this->darkenScreen = match($raw = LE::readUnsignedShort($in)){
                    0 => false,
                    1 => true,
                    default => throw new PacketDecodeException("Invalid darkenScreen value $raw"),
                };
            case self::TYPE_TEXTURE:
                $this->color = VarInt::readUnsignedInt($in);
                $this->overlay = VarInt::readUnsignedInt($in);
                break;
            case self::TYPE_HEALTH_PERCENT:
                $this->healthPercent = LE::readFloat($in);
                break;
            case self::TYPE_TITLE:
                $this->title = CommonTypes::getString($in);
                $this->filteredTitle = CommonTypes::getString($in);
                break;
            default:
                break;
        }
    }
 
    protected function encodePayload(ByteBufferWriter $out) : void{
        CommonTypes::putActorUniqueId($out, $this->bossActorUniqueId);
        VarInt::writeUnsignedInt($out, $this->eventType);
        switch($this->eventType){
            case self::TYPE_REGISTER_PLAYER:
            case self::TYPE_UNREGISTER_PLAYER:
            case self::TYPE_QUERY:
                CommonTypes::putActorUniqueId($out, $this->playerActorUniqueId);
                break;
            case self::TYPE_SHOW:
                CommonTypes::putString($out, $this->title);
                CommonTypes::putString($out, $this->filteredTitle);
                LE::writeFloat($out, $this->healthPercent);
            case self::TYPE_PROPERTIES:
                LE::writeUnsignedShort($out, $this->darkenScreen ? 1 : 0);
            case self::TYPE_TEXTURE:
                VarInt::writeUnsignedInt($out, $this->color);
                VarInt::writeUnsignedInt($out, $this->overlay);
                break;
            case self::TYPE_HEALTH_PERCENT:
                LE::writeFloat($out, $this->healthPercent);
                break;
            case self::TYPE_TITLE:
                CommonTypes::putString($out, $this->title);
                CommonTypes::putString($out, $this->filteredTitle);
                break;
            default:
                break;
        }
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handleBossEvent($this);
    }
}