Release 4.17.0

bedrock-item-upgrade-schema and bedrock-block-upgrade-schema are now minor-version-locked, to prevent introducing new upgrade schemas not intended for the currently in-use version
previously I'd intended to do this using max schema IDs, but this has proven to be error-prone, so it makes more sense to lock them in using package version constraints instead.

.github/dependabot.yml

@@ -6,6 +6,12 @@ updates:
     interval: daily
     time: "10:00"
   open-pull-requests-limit: 10
+  ignore:
+    #only allow patch updates for locale-data - this has to be updated manually due to codegen
+    - dependency-name: pocketmine/locale-data
+      update-types:
+        - "version-update:semver-major"
+        - "version-update:semver-minor"
 
 - package-ecosystem: gitsubmodule
   directory: "/"

.github/workflows/build-docker-image.yml

@@ -46,7 +46,7 @@ jobs:
         run: echo ::set-output name=NAME::$(echo "${GITHUB_REPOSITORY,,}")
 
       - name: Build image for tag
-        uses: docker/build-push-action@v3.1.1
+        uses: docker/build-push-action@v4.0.0
         with:
           push: true
           context: ./pocketmine-mp
@@ -59,7 +59,7 @@ jobs:
 
       - name: Build image for major tag
         if: steps.channel.outputs.CHANNEL == 'stable'
-        uses: docker/build-push-action@v3.1.1
+        uses: docker/build-push-action@v4.0.0
         with:
           push: true
           context: ./pocketmine-mp
@@ -72,7 +72,7 @@ jobs:
 
       - name: Build image for minor tag
         if: steps.channel.outputs.CHANNEL == 'stable'
-        uses: docker/build-push-action@v3.1.1
+        uses: docker/build-push-action@v4.0.0
         with:
           push: true
           context: ./pocketmine-mp
@@ -85,7 +85,7 @@ jobs:
 
       - name: Build image for latest tag
         if: steps.channel.outputs.CHANNEL == 'stable'
-        uses: docker/build-push-action@v3.1.1
+        uses: docker/build-push-action@v4.0.0
         with:
           push: true
           context: ./pocketmine-mp

.github/workflows/discord-release-embed.php

@@ -18,8 +18,9 @@ require dirname(__DIR__, 2) . '/vendor/autoload.php';
 /**
  * @phpstan-return array<string, mixed>
  */
-function generateDiscordEmbed(string $version, string $channel, string $description, string $detailsUrl, string $sourceUrl, string $pharDownloadUrl, string $buildLogUrl) : array{
+function generateDiscordEmbed(string $version, string $channel, string $description, string $detailsUrl, string $sourceUrl, string $pharDownloadUrl, string $buildLogUrl, int $newsPingRoleId) : array{
 	return [
+		"content" => "<@&$newsPingRoleId> New PocketMine-MP release: $version ($channel)",
 		"embeds" => [
 			[
 				"title" => "New PocketMine-MP release: $version ($channel)",
@@ -35,11 +36,11 @@ DESCRIPTION,
 	];
 }
 
-if(count($argv) !== 5){
-	fwrite(STDERR, "Required arguments: github repo, version, API token\n");
+if(count($argv) !== 6){
+	fwrite(STDERR, "Required arguments: github repo, version, API token, webhook URL, ping role ID\n");
 	exit(1);
 }
-[, $repo, $tagName, $token, $hookURL] = $argv;
+[, $repo, $tagName, $token, $hookURL, $newsPingRoleId] = $argv;
 
 $result = Internet::getURL('https://api.github.com/repos/' . $repo . '/releases/tags/' . $tagName, extraHeaders: [
 	'Authorization: token ' . $token
@@ -86,7 +87,7 @@ $buildLogUrl = $buildInfoJson["build_log_url"];
 
 $description = $releaseInfoJson["body"];
 
-$discordPayload = generateDiscordEmbed($buildInfoJson["base_version"], $buildInfoJson["channel"], $description, $detailsUrl, $sourceUrl, $pharDownloadUrl, $buildLogUrl);
+$discordPayload = generateDiscordEmbed($buildInfoJson["base_version"], $buildInfoJson["channel"], $description, $detailsUrl, $sourceUrl, $pharDownloadUrl, $buildLogUrl, (int) $newsPingRoleId);
 
 $response = Internet::postURL(
 	$hookURL,

.github/workflows/discord-release-notify.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP and tools
-        uses: shivammathur/setup-php@2.21.2
+        uses: shivammathur/setup-php@2.24.0
         with:
           php-version: 8.0
 
@@ -35,4 +35,4 @@ jobs:
         run: echo ::set-output name=TAG_NAME::$(echo "${{ github.ref }}" | sed 's{^refs/tags/{{')
 
       - name: Run webhook post script
-        run: php .github/workflows/discord-release-embed.php ${{ github.repository }} ${{ steps.tag-name.outputs.TAG_NAME }} ${{ github.token }} ${{ secrets.DISCORD_RELEASE_WEBHOOK }}
+        run: php .github/workflows/discord-release-embed.php ${{ github.repository }} ${{ steps.tag-name.outputs.TAG_NAME }} ${{ github.token }} ${{ secrets.DISCORD_RELEASE_WEBHOOK }} ${{ secrets.DISCORD_NEWS_PING_ROLE_ID }}

.github/workflows/draft-release.yml

@@ -18,7 +18,7 @@ jobs:
           submodules: true
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.21.2
+        uses: shivammathur/setup-php@2.24.0
         with:
           php-version: 8.0
 
@@ -55,6 +55,8 @@ jobs:
           echo ::set-output name=MCPE_VERSION::$(php -r 'require "vendor/autoload.php"; echo \pocketmine\network\mcpe\protocol\ProtocolInfo::MINECRAFT_VERSION_NETWORK;')
           echo ::set-output name=PM_VERSION_SHORT::$(php -r 'require "vendor/autoload.php"; $v = explode(".", \pocketmine\VersionInfo::BASE_VERSION); array_pop($v); echo implode(".", $v);')
           echo ::set-output name=PM_VERSION_MD::$(php -r 'require "vendor/autoload.php"; echo str_replace(".", "", \pocketmine\VersionInfo::BASE_VERSION);')
+          echo ::set-output name=CHANGELOG_SUFFIX::$(php -r 'require "vendor/autoload.php"; echo \pocketmine\VersionInfo::BUILD_CHANNEL === "stable" ? "" : "-" . \pocketmine\VersionInfo::BUILD_CHANNEL;')
+          echo ::set-output name=PRERELEASE::$(php -r 'require "vendor/autoload.php"; echo \pocketmine\VersionInfo::BUILD_CHANNEL === "stable" ? "false" : "true";')
 
       - name: Generate build info
         run: php build/generate-build-info-json.php ${{ github.sha }} ${{ steps.get-pm-version.outputs.PM_VERSION }} ${{ github.repository }} ${{ steps.build-number.outputs.BUILD_NUMBER }} ${{ github.run_id }} > build_info.json
@@ -69,15 +71,16 @@ jobs:
             ${{ github.workspace }}/build_info.json
 
       - name: Create draft release
-        uses: ncipollo/release-action@v1.10.0
+        uses: ncipollo/release-action@v1.12.0
         with:
           artifacts: ${{ github.workspace }}/PocketMine-MP.phar,${{ github.workspace }}/start.*,${{ github.workspace }}/build_info.json
           commit: ${{ github.sha }}
           draft: true
+          prerelease: ${{ steps.get-pm-version.outputs.PRERELEASE }}
           name: PocketMine-MP ${{ steps.get-pm-version.outputs.PM_VERSION }}
           tag: ${{ steps.get-pm-version.outputs.PM_VERSION }}
           token: ${{ secrets.GITHUB_TOKEN }}
           body: |
             **For Minecraft: Bedrock Edition ${{ steps.get-pm-version.outputs.MCPE_VERSION }}**
 
-            Please see the [changelogs](${{ github.server_url }}/${{ github.repository }}/blob/${{ steps.get-pm-version.outputs.PM_VERSION }}/changelogs/${{ steps.get-pm-version.outputs.PM_VERSION_SHORT }}.md#${{ steps.get-pm-version.outputs.PM_VERSION_MD }}) for details.
+            Please see the [changelogs](${{ github.server_url }}/${{ github.repository }}/blob/${{ steps.get-pm-version.outputs.PM_VERSION }}/changelogs/${{ steps.get-pm-version.outputs.PM_VERSION_SHORT }}${{ steps.get-pm-version.outputs.CHANGELOG_SUFFIX }}.md#${{ steps.get-pm-version.outputs.PM_VERSION_MD }}) for details.

.github/workflows/main.yml

@@ -13,14 +13,15 @@ jobs:
     strategy:
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.23, 8.1.10]
+        php: [8.0.28, 8.1.16, 8.2.3]
 
     steps:
       - name: Build and prepare PHP cache
-        uses: pmmp/setup-php-action@82a44d659bf5046612c69f036af3e14dc32e3fa8
+        uses: pmmp/setup-php-action@6dd74c145250109942b08fc63cd5118edd2fd256
         with:
           php-version: ${{ matrix.php }}
           install-path: "./bin"
+          pm-version-major: "4"
 
   phpstan:
     name: PHPStan analysis
@@ -31,16 +32,17 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.23, 8.1.10]
+        php: [8.0.28, 8.1.16, 8.2.3]
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: pmmp/setup-php-action@82a44d659bf5046612c69f036af3e14dc32e3fa8
+        uses: pmmp/setup-php-action@6dd74c145250109942b08fc63cd5118edd2fd256
         with:
           php-version: ${{ matrix.php }}
           install-path: "./bin"
+          pm-version-major: "4"
 
       - name: Install Composer
         run: curl -sS https://getcomposer.org/installer | php
@@ -69,16 +71,17 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.23, 8.1.10]
+        php: [8.0.28, 8.1.16, 8.2.3]
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: pmmp/setup-php-action@82a44d659bf5046612c69f036af3e14dc32e3fa8
+        uses: pmmp/setup-php-action@6dd74c145250109942b08fc63cd5118edd2fd256
         with:
           php-version: ${{ matrix.php }}
           install-path: "./bin"
+          pm-version-major: "4"
 
       - name: Install Composer
         run: curl -sS https://getcomposer.org/installer | php
@@ -107,7 +110,7 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.23, 8.1.10]
+        php: [8.0.28, 8.1.16, 8.2.3]
 
     steps:
       - uses: actions/checkout@v3
@@ -115,10 +118,11 @@ jobs:
           submodules: true
 
       - name: Setup PHP
-        uses: pmmp/setup-php-action@82a44d659bf5046612c69f036af3e14dc32e3fa8
+        uses: pmmp/setup-php-action@6dd74c145250109942b08fc63cd5118edd2fd256
         with:
           php-version: ${{ matrix.php }}
           install-path: "./bin"
+          pm-version-major: "4"
 
       - name: Install Composer
         run: curl -sS https://getcomposer.org/installer | php
@@ -147,16 +151,17 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.23, 8.1.10]
+        php: [8.0.28, 8.1.16, 8.2.3]
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: pmmp/setup-php-action@82a44d659bf5046612c69f036af3e14dc32e3fa8
+        uses: pmmp/setup-php-action@6dd74c145250109942b08fc63cd5118edd2fd256
         with:
           php-version: ${{ matrix.php }}
           install-path: "./bin"
+          pm-version-major: "4"
 
       - name: Install Composer
         run: curl -sS https://getcomposer.org/installer | php
@@ -180,6 +185,9 @@ jobs:
       - name: Regenerate KnownTranslation APIs
         run: php build/generate-known-translation-apis.php
 
+      - name: Regenerate BedrockData available files constants
+        run: php build/generate-bedrockdata-path-consts.php
+
       - name: Verify code is unchanged
         run: |
           git diff
@@ -195,10 +203,12 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP and tools
-        uses: shivammathur/setup-php@2.21.2
+        uses: shivammathur/setup-php@2.24.0
         with:
           php-version: 8.0
           tools: php-cs-fixer:3.11
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run PHP-CS-Fixer
         run: php-cs-fixer fix --dry-run --diff --ansi

.github/workflows/support.yml

@@ -8,7 +8,7 @@ jobs:
   support:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/support-requests@v2
+      - uses: dessant/support-requests@v3
         with:
           github-token: ${{ github.token }}
           support-label:  "Support request"

.github/workflows/update-php-versions.php

@@ -23,7 +23,8 @@ declare(strict_types=1);
 
 const VERSIONS = [
 	"8.0",
-	"8.1"
+	"8.1",
+	"8.2"
 ];
 
 $workflowFile = file_get_contents(__DIR__ . '/main.yml');

.idea/codeStyles/Project.xml

@@ -62,6 +62,11 @@
         <option name="USE_TAB_CHARACTER" value="true" />
       </indentOptions>
     </codeStyleSettings>
+    <codeStyleSettings language="Shell Script">
+      <indentOptions>
+        <option name="USE_TAB_CHARACTER" value="true" />
+      </indentOptions>
+    </codeStyleSettings>
     <codeStyleSettings language="neon">
       <indentOptions>
         <option name="USE_TAB_CHARACTER" value="true" />

.php-cs-fixer.php

@@ -66,6 +66,9 @@ BODY,
 		],
 		'indentation_type' => true,
 		'logical_operators' => true,
+		'native_constant_invocation' => [
+			'scope' => 'namespaced'
+		],
 		'native_function_invocation' => [
 			'scope' => 'namespaced',
 			'include' => ['@all'],
@@ -92,6 +95,12 @@ BODY,
 			],
 			'sort_algorithm' => 'alpha'
 		],
+		'phpdoc_align' => [
+			'align' => 'vertical',
+			'tags' => [
+				'param',
+			]
+		],
 		'phpdoc_line_span' => [
 			'property' => 'single',
 			'method' => null,

CONTRIBUTING.md

@@ -18,6 +18,32 @@ Larger contributions like feature additions should be preceded by a [Change Prop
 ## Other things you'll need
 - [git](https://git-scm.com/)
 
+## Choosing a target branch
+PocketMine-MP has three primary branches of development.
+
+| Type of change | `stable` | `minor-next` | `major-next` |
+|:---------------|:--------:|:------------:|:------------:|
+| Bug fixes | ✔️ | ✔️ | ✔️ |
+| Improvements to API docs | ✔️ | ✔️ | ✔️ |
+| Cleaning up code | ❌ | ✔️ | ✔️ |
+| Changing code formatting or style | ❌ | ✔️ | ✔️ |
+| Addition of new core features | ❌ | 🟡 Only if non-disruptive | ✔️ |
+| Changing core behaviour (e.g. making something use threads) | ❌ | ✔️ | ✔️ |
+| Addition of new configuration options | ❌ | 🟡 Only if optional | ✔️ |
+| Addition of new API classes, methods or constants | ❌ | ✔️ | ✔️ |
+| Deprecating API classes, methods or constants | ❌ | ✔️ | ✔️ |
+| Adding optional parameters to an API method | ❌ | ✔️ | ✔️ |
+| Changing API behaviour | ❌ | 🟡 Only if backwards-compatible | ✔️ |
+| Removal of API | ❌ | ❌ | ✔️ |
+| Backwards-incompatible API change (e.g. renaming a method) | ❌ | ❌ | ✔️ |
+
+### Notes
+- **Non-disruptive** means that usage should not be significantly altered by the change.
+  - Examples of **non-disruptive** changes include adding new commands, or gameplay features like blocks and items.
+  - Examples of **disruptive** changes include changing the way the server is run, world format changes (since those require downtime for the user to convert their world).
+- **API** includes all public and protected classes, functions and constants (unless marked as `@internal`).
+  - Private members are not part of the API, **unless in a trait**.
+
 ## Making a pull request
 The basic procedure to create a pull request is:
 1. [Fork the repository on GitHub](https://github.com/pmmp/PocketMine-MP/fork). This gives you your own copy of the repository to make changes to.

build/generate-bedrockdata-path-consts.php

@@ -0,0 +1,128 @@
+<?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\build\generate_bedrockdata_path_consts;
+
+use Symfony\Component\Filesystem\Path;
+use function dirname;
+use function fclose;
+use function fopen;
+use function fwrite;
+use function is_file;
+use function scandir;
+use function str_replace;
+use function strtoupper;
+use const PHP_EOL;
+use const pocketmine\BEDROCK_DATA_PATH;
+use const SCANDIR_SORT_ASCENDING;
+use const STDERR;
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+function constantify(string $permissionName) : string{
+	return strtoupper(str_replace([".", "-"], "_", $permissionName));
+}
+
+$files = scandir(BEDROCK_DATA_PATH, SCANDIR_SORT_ASCENDING);
+if($files === false){
+	fwrite(STDERR, "Couldn't find any files in " . BEDROCK_DATA_PATH . PHP_EOL);
+	exit(1);
+}
+
+$consts = [];
+
+foreach($files as $file){
+	if($file === '.' || $file === '..'){
+		continue;
+	}
+	if($file[0] === '.'){
+		continue;
+	}
+	$path = Path::join(BEDROCK_DATA_PATH, $file);
+	if(!is_file($path)){
+		continue;
+	}
+
+	foreach([
+		'README.md',
+		'LICENSE',
+		'composer.json',
+	] as $ignored){
+		if($file === $ignored){
+			continue 2;
+		}
+	}
+
+	$consts[] = $file;
+}
+
+$output = fopen(dirname(__DIR__) . '/src/data/bedrock/BedrockDataFiles.php', 'wb');
+if($output === false){
+	fwrite(STDERR, "Couldn't open output file" . PHP_EOL);
+	exit(1);
+}
+fwrite($output, <<<'HEADER'
+<?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\data\bedrock;
+
+use const pocketmine\BEDROCK_DATA_PATH;
+
+final class BedrockDataFiles{
+	private function __construct(){
+		//NOOP
+	}
+
+
+HEADER
+);
+
+foreach($consts as $constName => $fileName){
+	fwrite($output, "\tpublic const " . constantify($fileName) . " = BEDROCK_DATA_PATH . '/$fileName';\n");
+}
+
+fwrite($output, "}\n");
+fclose($output);
+
+echo "Done. Don't forget to run CS fixup after generating code.\n";

build/generate-known-translation-apis.php

@@ -25,7 +25,7 @@ namespace pocketmine\build\generate_known_translation_apis;
 
 use pocketmine\lang\Translatable;
 use pocketmine\utils\Utils;
-use Webmozart\PathUtil\Path;
+use Symfony\Component\Filesystem\Path;
 use function array_map;
 use function count;
 use function dirname;

build/generate-registry-annotations.php

@@ -36,9 +36,10 @@ use function ksort;
 use function mb_strtoupper;
 use function preg_match;
 use function sprintf;
+use function str_ends_with;
 use function str_replace;
-use function substr;
 use const SORT_STRING;
+use const STDERR;
 
 if(count($argv) !== 2){
 	fwrite(STDERR, "Provide a path to process\n");
@@ -120,7 +121,7 @@ require dirname(__DIR__) . '/vendor/autoload.php';
 if(is_dir($argv[1])){
 	/** @var string $file */
 	foreach(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($argv[1], \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::CURRENT_AS_PATHNAME)) as $file){
-		if(substr($file, -4) !== ".php"){
+		if(!str_ends_with($file, ".php")){
 			continue;
 		}
 

build/make-release.php

@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace pocketmine\build\make_release;
 
+use pocketmine\utils\Filesystem;
 use pocketmine\utils\Utils;
 use pocketmine\utils\VersionString;
 use pocketmine\VersionInfo;
@@ -30,17 +31,18 @@ use function array_keys;
 use function array_map;
 use function dirname;
 use function fgets;
-use function file_get_contents;
 use function file_put_contents;
 use function fwrite;
 use function getopt;
 use function is_string;
 use function max;
+use function preg_match;
 use function preg_replace;
 use function sleep;
 use function sprintf;
 use function str_pad;
 use function strlen;
+use function strtolower;
 use function system;
 use const STDERR;
 use const STDIN;
@@ -50,7 +52,7 @@ use const STR_PAD_LEFT;
 require_once dirname(__DIR__) . '/vendor/autoload.php';
 
 function replaceVersion(string $versionInfoPath, string $newVersion, bool $isDev, string $channel) : void{
-	$versionInfo = Utils::assumeNotFalse(file_get_contents($versionInfoPath), $versionInfoPath . " should always exist");
+	$versionInfo = Filesystem::fileGetContents($versionInfoPath);
 	$versionInfo = preg_replace(
 		$pattern = '/^([\t ]*public )?const BASE_VERSION = "(\d+)\.(\d+)\.(\d+)(?:-(.*))?";$/m',
 		'$1const BASE_VERSION = "' . $newVersion . '";',
@@ -102,22 +104,43 @@ function main() : void{
 		$filteredOpts[$optName] = $optValue;
 	}
 
+	$channel = $filteredOpts["channel"] ?? null;
 	if(isset($filteredOpts["current"])){
 		$currentVer = new VersionString($filteredOpts["current"]);
 	}else{
 		$currentVer = new VersionString(VersionInfo::BASE_VERSION);
 	}
-	if(isset($filteredOpts["next"])){
-		$nextVer = new VersionString($filteredOpts["next"]);
+
+	$nextVer = isset($filteredOpts["next"]) ? new VersionString($filteredOpts["next"]) : null;
+
+	$suffix = $currentVer->getSuffix();
+	if($suffix !== ""){
+		if($channel === "stable"){
+			fwrite(STDERR, "error: cannot release a suffixed build into the stable channel\n");
+			exit(1);
+		}
+		if(preg_match('/^([A-Za-z]+)(\d+)$/', $suffix, $matches) !== 1){
+			echo "error: invalid current version suffix \"$suffix\"; aborting\n";
+			exit(1);
+		}
+		$nextVer ??= new VersionString(sprintf(
+			"%u.%u.%u-%s%u",
+			$currentVer->getMajor(),
+			$currentVer->getMinor(),
+			$currentVer->getPatch(),
+			$matches[1],
+			((int) $matches[2]) + 1
+		));
+		$channel ??= strtolower($matches[1]);
 	}else{
-		$nextVer = new VersionString(sprintf(
+		$nextVer ??= new VersionString(sprintf(
 			"%u.%u.%u",
 			$currentVer->getMajor(),
 			$currentVer->getMinor(),
 			$currentVer->getPatch() + 1
 		));
+		$channel ??= "stable";
 	}
-	$channel = $filteredOpts["channel"] ?? VersionInfo::BUILD_CHANNEL;
 
 	echo "About to tag version $currentVer. Next version will be $nextVer.\n";
 	echo "$currentVer will be published on release channel \"$channel\".\n";

build/server-phar.php

@@ -40,12 +40,13 @@ use function rtrim;
 use function sprintf;
 use function str_replace;
 use function unlink;
+use const DIRECTORY_SEPARATOR;
 use const PHP_EOL;
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
 /**
- * @param string[]    $strings
+ * @param string[] $strings
  *
  * @return string[]
  */

changelogs/4.10.md

@@ -0,0 +1,53 @@
+**For Minecraft: Bedrock Edition 1.19.40**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.10.0
+Released 26th October 2022.
+
+## General
+- Added support for Minecraft: Bedrock Edition 1.19.40.
+- Removed support for older versions.
+
+## Fixes
+- Fixed incorrect command descriptions showing in `/help` when multiple commands use the same name. Previously, the most recently registered command would show, even though it wouldn't actually be invoked.
+- Fixed splash potions affecting players in spectator mode.
+- Fixed `World->addParticle()` sending particles to players who couldn't possibly see them when a list of targets was used.
+- Fixed `World->addSound()` sending sounds to players who couldn't possibly hear them when a list of targets was used.
+
+## Documentation
+- Improved type information available for various API methods in `World`.
+
+# 4.10.1
+Released 7th November 2022.
+
+## Fixes
+- Fixed spawning in the void if spawn terrain in a world is solid at the default spawn position.
+- Fixed totems of undying activating when the player has 1 HP remaining.
+- Fixed durable items such as tools becoming unbreakable when in stacks larger than 1. Now, the durability correctly resets when the tool breaks.
+- TPS below 12 now correctly shows as red in `/status`. Previously, it showed as orange due to a condition ordering bug.
+- Improved handling of missing arguments in user-defined `pocketmine.yml` command aliases. Previously, missing arguments would be filled with an empty string, which caused a variety of unexpected behaviour.
+
+## Internals
+- Added validation for the array given to `BaseInventory->setContents()` to ensure that it contains only `Item` instances.
+- Silenced `PlayerAuthInputPacket` spam when the session is in the "spawn response" state.
+- Updated to PHPStan 1.9.
+
+# 4.10.2
+Released 25th November 2022.
+
+## Fixes
+- Fixed crashes on macOS and Linux when using console colours without the `TERM` environment variable set.
+- Fixed crashdumps not being generated when error messages contained invalid UTF-8 characters.
+
+## Documentation
+- Clarified documentation of caching behaviour for `Internet::getIP()`.
+- Added and improved documentation for many `Inventory` methods.
+- Rewritten documentation for `PlayerCreationEvent` with warnings and more detail.
+
+## Internals
+- Non-arrow projectile damage is now unscaled. Scaling according to velocity is only applied to arrows. This currently doesn't cause any observable change in behaviour, but is required for future additions.

changelogs/4.11-beta.md

@@ -0,0 +1,92 @@
+**For Minecraft: Bedrock Edition 1.19.40**
+
+This is a minor feature release for PocketMine-MP, introducing some new features and improvements.
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.11.0-BETA1
+Released 7th November 2022.
+
+## General
+- Packet receive timings have now been split into two subcategories - Decode and Handle.
+- Console command entry can now be disabled via the `console.enable-input` setting in `pocketmine.yml`.
+    - Best suited for headless servers (e.g. in a Docker container) where the console will never be used anyway.
+    - Disabling the console reader slightly reduces memory usage, because console reading currently requires an additional subprocess.
+- Console command output now appears on the terminal only, and is not written to the log file.
+- The output from console commands now appears with a `Command output |` prefix, instead of as a log message.
+- Introduced validation for the `--data` and `--plugins` command line options.
+- Encrypted resource packs are now supported, by means of adding a `.key` file alongside the pack in the `resource_packs` folder.
+    - e.g. `MyEncryptedPack.zip` -> `MyEncryptedPack.zip.key`
+
+## Gameplay
+- Fixed supporting blocks of dead bush to be in line with vanilla.
+- Sugarcane can now be grown using bonemeal on any part of the sugarcane. Previously, it only worked when used on the bottom block.
+- Fixed modifier values for Instant Damage and Regeneration effects.
+
+## API
+### General
+- Plugins are now always disabled before their dependencies, to ensure that they are able to shutdown properly (e.g. a core plugin depending on a database plugin may want to save data to a DB during `onDisable()`).
+- [`webmozart/path-util`](https://packagist.org/packages/webmozart/path-util) has been deprecated, and will be dropped in favour of [`symfony/filesystem`](https://packagist.org/packages/symfony/filesystem) in PM5.
+    - To prepare for this change, simply replace any usage of `Webmozart\PathUtil\Path` with `Symfony\Component\Filesystem\Path`, which is available as a dependency in this release.
+
+### `pocketmine`
+- The following API methods are now deprecated:
+    - `Server->getPlayerByPrefix()`
+
+### `pocketmine\entity`
+- `EntitySpawnEvent` and `ItemSpawnEvent` are now fired on the first tick after the entity is added to the world. Previously, these events were called directly from the entity constructor, making it impossible to get properties like velocity which are often set after the entity is created.
+- The following API methods are now deprecated:
+    - `Living->hasLineOfSight()`
+
+### `pocketmine\item`
+- The following new API methods have been added:
+    - `public Armor->clearCustomColor() : $this`
+
+### `pocketmine\inventory\transaction`
+- Introduced a `TransactionBuilder` class. This makes it less of a hassle to build an `InventoryTransaction` server-side, since the regular `Inventory` API methods can be used, rather than having to manually create `SlotChangeAction`s.
+
+### `pocketmine\player`
+- The following new API methods have been added:
+    - `public Player->sendToastNotification(string $title, string $body) : void` - makes a grey box appear at the top of the player's screen containing the specified message
+
+### `pocketmine\utils`
+- The following new API methods have been added:
+    - `public static TextFormat::addBase(string $baseFormat, string $string) : string` - used for coloured log messages, changes the base formatting of a string by inserting the given formatting codes after every RESET code
+
+## Internals
+- Improved performance of `ContainerTrait` dropping items on block destroy. (24e72ec109c1442b09558df89b6833cf2f2e0ec7)
+- Avoid repeated calls to `Position->getWorld()` (use local variables). (2940547026db40ce76deb46e992870de3ead79ad)
+- Revamped the way `InventoryManager` handles fake inventory slot mappings for stuff like crafting tables. (e90abecf38d9c57635fa0497514bba7e546a2469)
+- Console polling is now done on the main thread (no longer a performance concern).
+- Console reader subprocess should now automatically die if the server main process is killed, instead of persisting as a zombie.
+- `ConsoleCommandSender` is no longer responsible for relaying broadcast messages to `MainLogger`. A new `BroadcastLoggerForwarder` has been added, which is subscribed to the appropriate server broadcast channels in order to relay messages. This ensures that chat messages and command audit messages are logged.
+- `DelegateInventory` now uses `WeakReference` to track its inventory listener. This allows the delegate to be reused.
+
+# 4.11.0-BETA2
+Released 13th November 2022.
+
+## Configuration
+- The `chunk-ticking.per-tick` setting is now deprecated, and will be removed in a future release.
+  - The functionality of this setting has been removed, since it caused more problems than it solved.
+  - Setting it to zero will still disable chunk ticking (for now), but this should now be done by setting `chunk-ticking.tick-radius` to `0` instead.
+
+## Gameplay
+- Improved chunk random ticking:
+  - Removed the limit on chunks ticked per tick, and its associated config option is no longer respected.
+    - This change significantly improves crop and plant growth with large numbers of players, but may cause higher CPU usage.
+    - This limit was causing a linear decrease in chunk ticking speed with larger numbers of players, leading to worsened gameplay experience.
+  - Every chunk within the configured tick radius of a player will be ticked. Previously, chunks were randomly selected from the radius.
+- Implemented Darkness effect.
+
+## API
+### `pocketmine\world`
+- The following new API methods have been added:
+  - `public World->getChunkTickRadius() : int` - returns the world's simulation radius
+  - `public World->setChunkTickRadius(int $radius) : void` - sets the world's simulation radius
+
+## Internals
+- Non-arrow projectile damage is now unscaled. Scaling according to velocity is only applied to arrows. This currently doesn't cause any observable change in behaviour, but is required for future additions.

changelogs/4.11.md

@@ -0,0 +1,106 @@
+**For Minecraft: Bedrock Edition 1.19.40**
+
+This is a minor feature release for PocketMine-MP, introducing some new features and improvements.
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.11.0
+Released 25th November 2022.
+
+## General
+- Packet receive timings have now been split into two subcategories - Decode and Handle.
+- Console command entry can now be disabled via the `console.enable-input` setting in `pocketmine.yml`.
+  - Best suited for headless servers (e.g. in a Docker container) where the console will never be used anyway.
+  - Disabling the console reader slightly reduces memory usage, because console reading currently requires an additional subprocess.
+- Console command output now appears on the terminal only, and is not written to the log file.
+- The output from console commands now appears with a `Command output |` prefix, instead of as a log message.
+- User-defined `pocketmine.yml` custom commands now use a generic description which makes clear the command is config-defined.
+- Introduced validation for the `--data` and `--plugins` command line options.
+- Encrypted resource packs are now supported, by means of adding a `.key` file alongside the pack in the `resource_packs` folder.
+  - e.g. `MyEncryptedPack.zip` -> `MyEncryptedPack.zip.key`
+  - The file must contain the raw key bytes, and must not end with a newline.
+
+## Configuration
+- The `chunk-ticking.per-tick` setting is now deprecated, and will be removed in a future release.
+  - The functionality of this setting has been removed, since it caused more problems than it solved.
+  - Setting it to zero will still disable chunk ticking (for now), but this should now be done by setting `chunk-ticking.tick-radius` to `0` instead.
+
+## Gameplay
+- Fixed supporting blocks of dead bush to be in line with vanilla.
+- Sugarcane can now be grown using bonemeal on any part of the sugarcane. Previously, it only worked when used on the bottom block.
+- Fixed missing sounds when adding, rotating, or removing items in item frames.
+- Fixed modifier values for Instant Damage and Regeneration effects.
+- Implemented Darkness effect.
+- Improved chunk random ticking:
+  - Removed the limit on chunks ticked per tick, and its associated config option is no longer respected.
+    - This change significantly improves crop and plant growth with large numbers of players.
+    - This limit was causing a linear decrease in chunk ticking speed with larger numbers of players, leading to worsened gameplay experience.
+    - **Warning: This change will result in increased CPU usage if players are spread over a very large area.**
+  - Every chunk within the configured tick radius of a player will be ticked. Previously, chunks were randomly selected from the radius.
+
+## API
+### General
+- Plugins are now always disabled before their dependencies, to ensure that they are able to shutdown properly (e.g. a core plugin depending on a database plugin may want to save data to a DB during `onDisable()`).
+- [`webmozart/path-util`](https://packagist.org/packages/webmozart/path-util) has been deprecated, and will be dropped in favour of [`symfony/filesystem`](https://packagist.org/packages/symfony/filesystem) in PM5.
+    - To prepare for this change, simply replace any usage of `Webmozart\PathUtil\Path` with `Symfony\Component\Filesystem\Path`, which is available as a dependency in this release.
+
+### `pocketmine`
+- The following API methods are now deprecated:
+  - `Server->getPlayerByPrefix()`
+
+### `pocketmine\entity`
+- `EntitySpawnEvent` and `ItemSpawnEvent` are now fired on the first tick after the entity is added to the world. Previously, these events were called directly from the entity constructor, making it impossible to get properties like velocity which are often set after the entity is created.
+- The following API methods are now deprecated:
+  - `Living->hasLineOfSight()`
+
+### `pocketmine\event\block`
+- The following new classes have been added:
+  - `BlockDeathEvent` - event called when coral or coral blocks die due to lack of water
+
+### `pocketmine\item`
+- The following new API methods have been added:
+  - `public Armor->clearCustomColor() : $this`
+
+### `pocketmine\inventory\transaction`
+- Introduced a `TransactionBuilder` class. This makes it less of a hassle to build an `InventoryTransaction` server-side, since the regular `Inventory` API methods can be used, rather than having to manually create `SlotChangeAction`s.
+
+### `pocketmine\lang`
+- The following new API methods have been added:
+  - `public Language->getAll() : array<string, string>`
+
+### `pocketmine\player`
+- The following new API methods have been added:
+  - `public Player->sendToastNotification(string $title, string $body) : void` - makes a grey box appear at the top of the player's screen containing the specified message
+
+### `pocketmine\utils`
+- The following new API methods have been added:
+  - `public static TextFormat::addBase(string $baseFormat, string $string) : string` - used for coloured log messages, changes the base formatting of a string by inserting the given formatting codes after every RESET code
+
+### `pocketmine\world`
+- The following new API methods have been added:
+  - `public World->getChunkTickRadius() : int` - returns the world's simulation radius
+  - `public World->setChunkTickRadius(int $radius) : void` - sets the world's simulation radius
+
+### `pocketmine\world\sound`
+- The following new classes have been added:
+  - `ItemFrameAddItemSound`
+  - `ItemFrameRemoveItemSound`
+  - `ItemFrameRotateItemSound`
+
+## Internals
+- Improved performance of `ContainerTrait` dropping items on block destroy. ([link](https://github.com/pmmp/PocketMine-MP/commits/24e72ec109c1442b09558df89b6833cf2f2e0ec7))
+- Avoid repeated calls to `Position->getWorld()` (use local variables). ([link](https://github.com/pmmp/PocketMine-MP/commit/2940547026db40ce76deb46e992870de3ead79ad))
+- Revamped the way `InventoryManager` handles fake inventory slot mappings for stuff like crafting tables. ([link](https://github.com/pmmp/PocketMine-MP/commit/e90abecf38d9c57635fa0497514bba7e546a2469))
+  - Inventories are now mapped on a per-slot basis. This means that more than one inventory can be mapped to the same window ID, which is necessary for correctly handling "UI" inventories like crafting tables.
+  - `InventoryManager->getWindow(int $windowId) : ?Inventory` is replaced by `locateWindowAndSlot` (see below).
+  - Added `InventoryManager->locateWindowAndSlot(int $windowId, int $netSlotId) : array{Inventory, int}` - accepts a window ID and absolute slot ID, and returns the associated inventory and the slot relative to the inventory's own start (for use with `getItem()` etc.).
+  - Slot offset mapping for "UI" inventories is now handled in `InventoryManager->createComplexSlotMapping()` instead of in `TypeConverter`.
+- Console polling is now done on the main thread (no longer a performance concern). ([link](https://github.com/pmmp/PocketMine-MP/commit/b3f03d7ae645de67a54b7300c09b94eeca16298e))
+- Console reader subprocess should now automatically die if the server main process is killed, instead of persisting as a zombie. ([link](https://github.com/pmmp/PocketMine-MP/commit/2585160ca2c4df5758b8b980331307402ff9f0fb))
+- `ConsoleCommandSender` is no longer responsible for relaying broadcast messages to `MainLogger`. A new `BroadcastLoggerForwarder` has been added, which is subscribed to the appropriate server broadcast channels in order to relay messages. This ensures that chat messages and command audit messages are logged. ([link](https://github.com/pmmp/PocketMine-MP/commit/83e5b0adb6fa0dddec377182bb1c7945ac8f7820))
+- `DelegateInventory` now uses `WeakReference` to track its inventory listener. This allows the delegate to be reused. ([link](https://github.com/pmmp/PocketMine-MP/commit/3feaa18f6c10c3a99c0deca75f57ec2d74b92ab4))
+- Non-arrow projectile damage is now unscaled. Scaling according to velocity is only applied to arrows. This currently doesn't cause any observable change in behaviour, but is required for future additions.

changelogs/4.12.md

@@ -0,0 +1,119 @@
+**For Minecraft: Bedrock Edition 1.19.50**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.12.0
+Released 30th November 2022.
+
+## General
+- Added support for Minecraft: Bedrock Edition 1.19.50.
+- Removed support for older versions.
+
+# 4.12.1
+Released 4th December 2022.
+
+## Fixes
+- Fixed items glitching when dragging a stack of items across the crafting grid (desync issues).
+
+# 4.12.2
+Released 15th December 2022.
+
+## Fixes
+- Folder used for plugins (optionally specified by `--plugins`) is no longer required to be writable.
+- Fixed broken writable check for server data folder (`is_writable()` broken on NFS and similar filesystems).
+- `Filesystem::createLockFile()` exceptions now include more information about why the lock file could not be created.
+- Fixed client-side item predictions not being rolled back when cancelling events such as `PlayerItemUseEvent`.
+
+## Dependencies
+- Updated BedrockProtocol to [17.1.0](https://github.com/pmmp/BedrockProtocol/releases/tag/17.1.0+bedrock-1.19.50). This adds some missing `LevelSoundEvent` constants and fixes the values for `ContainerUIIds`.
+
+# 4.12.3
+Released 28th December 2022.
+
+## Fixes
+- Fixed unauthenticated connections taking up player count slots, preventing players from joining.
+- Fixed a possible crash in `World->tickChunk()` when plugins unload chunks during some events.
+- `/gamemode` will now report a failure to change game mode if the player is already in the requested game mode.
+
+# 4.12.4
+Released 3rd January 2023.
+
+## Fixes
+- Added workarounds for an active exploit being used to deny service to servers.
+
+# 4.12.5
+Released 6th January 2023.
+
+## Fixes
+- Removed a workaround for an old client bug in custom form responses. The code contained a denial-of-service vulnerability.
+
+# 4.12.6
+Released 7th January 2023.
+
+## Changes
+- Added a new security measure to `NetworkSession` to detect and ban players who flood the server with packets.
+
+# 4.12.7
+Released 8th January 2023.
+
+## Fixes
+- Fixed players getting kicked when the server lags for too long.
+- Fixed players getting kicked when a debugging session is active and a breakpoint is hit.
+
+# 4.12.8
+Released 9th January 2023.
+
+## Fixes
+- Fixed players getting kicked during PvP.
+- Fixed players randomly getting kicked on Windows (improper rate limit handling wrt. 15ms timer resolution).
+
+# 4.12.9
+Released 16th January 2023.
+
+## Improvements
+### Timings
+- Added new timers:
+  - `Server Mid-Tick Processing` - time spent processing Snooze interrupts between ticks (e.g. incoming network packets)
+  - `Server Tick Update Cycle` - time spent processing regular per-tick updates (e.g. entity movement, world updates, etc.) (`Server->tick()`)
+- `Full Server Tick` timer now counts the total of `Server Mid-Tick Processing` and `Server Tick Update Cycle`, which generates more accurate performance metrics.
+  - Previously, this timer only counted the time spent during regular per-tick updates, and the time recorded by `Server Mid-Tick Processing` was not included in the report at all.
+
+## Fixes
+- Fixed blocks such as pressure plates being able to be placed without the correct supporting blocks if the clicked block was solid.
+- Pressure plates now self-destruct when the block below them is removed.
+- Fixed being unable to place blocks by clicking on the side of a bell (when the click doesn't result in ringing the bell).
+- Fixed various rotation-aware blocks (e.g. stairs) behaving incorrectly when placed by clicking on the side of a replaceable block (e.g. tall grass).
+- Fixed banners being able to be placed on top of blocks such as skulls.
+- Fixed server-side collision boxes of walls and glass (which should connect, but didn't). Note that wall connections still don't show client side - this just fixes the collision boxes.
+- Fixed `PlayerInteractEvent` with `LEFT_CLICK` sometimes firing before `BlockBreakEvent` when breaking blocks.
+
+## Other changes
+- Increased packet batch budget for player sessions.
+
+# 4.12.10
+Released 18th January 2023.
+
+## Fixes
+- Fixed reported server load not including the time spent processing Snooze interrupts between ticks (e.g. incoming network packets).
+- Fixed `Connection Handler` entry in timings report not including time spent receiving packets.
+
+## Note about server load & performance
+This version will report higher apparent server load than previous versions. The actual performance of the server is unchanged; the previous reported load was inaccurate.
+These bugs have been present for nearly 5 years (ever since the first introduction of Snooze in 3.0.0).
+
+# 4.12.11
+Released 22nd January 2023.
+
+## General
+- Code is now tested and analysed using PHP 8.2 in addition to 8.1 and 8.0.
+
+## Fixes
+- Fixed pthreads 5.0.0 incorrectly being treated as compatible.
+- Fixed deprecation errors on PHP 8.2.
+
+## Documentation
+- Updated documentation in `PlayerPreLoginEvent`.

changelogs/4.13-beta.md

@@ -0,0 +1,94 @@
+**For Minecraft: Bedrock Edition 1.19.50**
+
+This is a minor feature release for PocketMine-MP, introducing some new features and improvements.
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.13.0-BETA1
+Released 18th January 2023.
+
+## Gameplay
+- Death message is now shown on the death screen when a player dies.
+- Armour damage is now only increased if the armour reduced the damage taken.
+- Implemented Swift Sneak enchantment.
+- Fixed incorrect collision box calculation of walls and glass/bars when connected. Note: Client-side, wall connections are still broken; this only fixes projectile flight server-side.
+
+## Performance
+- Improved performance of chunk selection for chunk random ticking using a cache. This improves performance of chunk random ticking by 10-20%.
+
+## Localization
+- Added localized description for the `/dumpmemory` command.
+
+## Permissions
+- Added the following new core permissions:
+  - `pocketmine.command.effect.other` - allows the player to use the `/effect` command on other players (default operator only)
+  - `pocketmine.command.effect.self` - allows the player to use the `/effect` command on themselves (default operator only)
+  - `pocketmine.command.enchant.other` - allows the player to use the `/enchant` command on other players (default operator only)
+  - `pocketmine.command.enchant.self` - allows the player to use the `/enchant` command on themselves (default operator only)
+  - `pocketmine.command.gamemode.other` - allows the player to use the `/gamemode` command on other players (default operator only)
+  - `pocketmine.command.gamemode.self` - allows the player to use the `/gamemode` command on themselves (default operator only)
+  - `pocketmine.command.give.other` - allows the player to use the `/give` command on other players (default operator only)
+  - `pocketmine.command.give.self` - allows the player to use the `/give` command on themselves (default operator only)
+  - `pocketmine.command.spawnpoint.other` - allows the player to use the `/spawnpoint` command on other players (default operator only)
+  - `pocketmine.command.spawnpoint.self` - allows the player to use the `/spawnpoint` command on themselves (default operator only)
+  - `pocketmine.command.teleport.other` - allows the player to use the `/teleport` command on other players (default operator only)
+  - `pocketmine.command.teleport.self` - allows the player to use the `/teleport` command on themselves (default operator only)
+  - `pocketmine.command.title.other` - allows the player to use the `/title` command on other players (default operator only)
+  - `pocketmine.command.title.self` - allows the player to use the `/title` command on themselves (default operator only)
+
+## Internals
+- Decoupled `Player->sendMessage()` and `Player->sendTranslation()`.
+- Refactored resource pack loading in `ResourcePackManager` to make it easier to understand.
+- Client-aware translation processing has been moved to `NetworkSession` due to being client-specific.
+- Replaced hardcoded strings with constants in various places.
+- `NetworkSession` destructive cleanup is now deferred to the next session tick. This fixes various `InventoryManager` crashes when kicking players during events.
+- Updated code using `strpos()` to use `str_starts_with()`, `str_ends_with()` and `str_contains()` where appropriate.
+- Added documentation for some internal methods.
+
+## API
+### `pocketmine\command`
+- The following new API methods have been added:
+  - `protected VanillaCommand->fetchPermittedPlayerTarget(...) : ?Player` - fetches a player target according to the given sender permissions, or null if not found or not permitted
+
+### `pocketmine\entity`
+- The following new API methods have been added:
+  - `public Living->getDisplayName() : string` - the name of the entity to be shown in death messages, commands etc.
+
+### `pocketmine\event\world`
+- The following new classes have been added:
+  - `WorldSoundEvent` - called when a sound is played in a world
+  - `WorldParticleEvent` - called when a particle is spawned in a world
+
+### `pocketmine\item`
+- The following new API methods have been added:
+  - `public Item->onInteractEntity(Player $player, Entity $entity, Vector3 $clickVector) : bool` - called when a player interacts with an entity with this item in hand
+
+### `pocketmine\lang`
+- `Language->translate()` and `Language->translateString()` no longer parse nested translation in the "base text". This was never intended behaviour, and didn't work beyond the first level anyway.
+
+### `pocketmine\player`
+- The following new interfaces have been added:
+  - `PlayerDataProvider` - implemented by classes which want to offer storage for player data
+- The following new classes have been added:
+  - `DatFilePlayerDataProvider` - the default player data provider, which stores `.dat` files in the `players` folder
+  - `PlayerDataLoadException` - thrown when an error occurs while loading player data
+  - `PlayerDataSaveException` - thrown when an error occurs while saving player data
+- The following API methods have been deprecated:
+  - `Player->sendTranslation()` - use `Player->sendMessage()` instead with a `Translatable` message
+
+### `pocketmine\resourcepacks`
+- The following new API methods have been added:
+  - `public ResourcePackManager->setResourceStack(list<ResourcePack> $resourceStack) : void` - sets the list of resource packs to be applied by players
+  - `public ResourcePackManager->setPackEncryptionKey(string $id, ?string $key) : void` - sets the encryption key to be used for a resource pack
+
+### `pocketmine\utils`
+- The following new API methods have been added:
+  - `public static Filesystem::fileGetContents(...) : string` - a wrapper around `file_get_contents()` which throws an exception on failure
+
+### `pocketmine\world`
+- The following new API methods have been added:
+  - `public World->requestSafeSpawn(?Vector3 $spawn = null) : Promise<Position>` - an async version of `getSafeSpawn()` which generates all the needed chunks before returning

changelogs/4.13.md

@@ -0,0 +1,94 @@
+**For Minecraft: Bedrock Edition 1.19.50**
+
+This is a minor feature release for PocketMine-MP, introducing some new features and improvements.
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.13.0
+Released 30th January 2023.
+
+## Gameplay
+- Death message is now shown on the death screen when a player dies.
+- Armour damage is now only increased if the armour reduced the damage taken.
+- Implemented Swift Sneak enchantment.
+- Fixed incorrect collision box calculation of walls and glass/bars when connected. Note: Client-side, wall connections are still broken; this only fixes projectile flight server-side.
+
+## Performance
+- Improved performance of chunk selection for chunk random ticking using a cache. This improves performance of chunk random ticking by 10-20%.
+
+## Localization
+- Added localized description for the `/dumpmemory` command.
+
+## Permissions
+- Added the following new core permissions:
+  - `pocketmine.command.effect.other` - allows the player to use the `/effect` command on other players (default operator only)
+  - `pocketmine.command.effect.self` - allows the player to use the `/effect` command on themselves (default operator only)
+  - `pocketmine.command.enchant.other` - allows the player to use the `/enchant` command on other players (default operator only)
+  - `pocketmine.command.enchant.self` - allows the player to use the `/enchant` command on themselves (default operator only)
+  - `pocketmine.command.gamemode.other` - allows the player to use the `/gamemode` command on other players (default operator only)
+  - `pocketmine.command.gamemode.self` - allows the player to use the `/gamemode` command on themselves (default operator only)
+  - `pocketmine.command.give.other` - allows the player to use the `/give` command on other players (default operator only)
+  - `pocketmine.command.give.self` - allows the player to use the `/give` command on themselves (default operator only)
+  - `pocketmine.command.spawnpoint.other` - allows the player to use the `/spawnpoint` command on other players (default operator only)
+  - `pocketmine.command.spawnpoint.self` - allows the player to use the `/spawnpoint` command on themselves (default operator only)
+  - `pocketmine.command.teleport.other` - allows the player to use the `/teleport` command on other players (default operator only)
+  - `pocketmine.command.teleport.self` - allows the player to use the `/teleport` command on themselves (default operator only)
+  - `pocketmine.command.title.other` - allows the player to use the `/title` command on other players (default operator only)
+  - `pocketmine.command.title.self` - allows the player to use the `/title` command on themselves (default operator only)
+
+## Internals
+- Decoupled `Player->sendMessage()` and `Player->sendTranslation()`.
+- Refactored resource pack loading in `ResourcePackManager` to make it easier to understand.
+- Client-aware translation processing has been moved to `NetworkSession` due to being client-specific.
+- Replaced hardcoded strings with constants in various places.
+- `NetworkSession` destructive cleanup is now deferred to the next session tick. This fixes various `InventoryManager` crashes when kicking players during events.
+- Updated code using `strpos()` to use `str_starts_with()`, `str_ends_with()` and `str_contains()` where appropriate.
+- Added documentation for some internal methods.
+
+## API
+### `pocketmine\command`
+- The following new API methods have been added:
+  - `protected VanillaCommand->fetchPermittedPlayerTarget(...) : ?Player` - fetches a player target according to the given sender permissions, or null if not found or not permitted
+
+### `pocketmine\entity`
+- The following new API methods have been added:
+  - `public Living->getDisplayName() : string` - the name of the entity to be shown in death messages, commands etc.
+
+### `pocketmine\event\world`
+- The following new classes have been added:
+  - `WorldSoundEvent` - called when a sound is played in a world
+  - `WorldParticleEvent` - called when a particle is spawned in a world
+
+### `pocketmine\item`
+- The following new API methods have been added:
+  - `public Item->onInteractEntity(Player $player, Entity $entity, Vector3 $clickVector) : bool` - called when a player interacts with an entity with this item in hand
+
+### `pocketmine\lang`
+- `Language->translate()` and `Language->translateString()` no longer parse nested translation in the "base text". This was never intended behaviour, and didn't work beyond the first level anyway.
+
+### `pocketmine\player`
+- The following new interfaces have been added:
+  - `PlayerDataProvider` - implemented by classes which want to offer storage for player data
+- The following new classes have been added:
+  - `DatFilePlayerDataProvider` - the default player data provider, which stores `.dat` files in the `players` folder
+  - `PlayerDataLoadException` - thrown when an error occurs while loading player data
+  - `PlayerDataSaveException` - thrown when an error occurs while saving player data
+- The following API methods have been deprecated:
+  - `Player->sendTranslation()` - use `Player->sendMessage()` instead with a `Translatable` message
+
+### `pocketmine\resourcepacks`
+- The following new API methods have been added:
+  - `public ResourcePackManager->setResourceStack(list<ResourcePack> $resourceStack) : void` - sets the list of resource packs to be applied by players
+  - `public ResourcePackManager->setPackEncryptionKey(string $id, ?string $key) : void` - sets the encryption key to be used for a resource pack
+
+### `pocketmine\utils`
+- The following new API methods have been added:
+  - `public static Filesystem::fileGetContents(...) : string` - a wrapper around `file_get_contents()` which throws an exception on failure
+
+### `pocketmine\world`
+- The following new API methods have been added:
+  - `public World->requestSafeSpawn(?Vector3 $spawn = null) : Promise<Position>` - an async version of `getSafeSpawn()` which generates all the needed chunks before returning

changelogs/4.14.md

@@ -0,0 +1,21 @@
+**For Minecraft: Bedrock Edition 1.19.60**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.14.0
+Released 8th February 2023.
+
+## General
+- Added support for Minecraft: Bedrock Edition 1.19.60.
+- Removed support for older versions.
+
+# 4.14.1
+Released 15th February 2023.
+
+## Fixes
+- Fixed all players getting kicked with `Receiving packets too fast` if a server tick takes longer than 5 seconds (e.g. because of autosave or GC).
+- Fixed players getting kicked when linking with entities.

changelogs/4.15.md

@@ -0,0 +1,38 @@
+**For Minecraft: Bedrock Edition 1.19.62**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.15.0
+Released 17th February 2023.
+
+## General
+- Added support for Minecraft: Bedrock Edition 1.19.62.
+- Removed support for older versions.
+
+# 4.15.1
+Released 21st February 2023.
+
+## Fixes
+- Fixed dropped items not despawning when in non-ticking chunks.
+- Fixed dropped items not despawning if an infinite pickup delay is set.
+- Fixed infinite despawn delay (never despawn) being ignored for dropped items.
+
+# 4.15.2
+Released 24th February 2023.
+
+## General
+- Accept Minecraft: Bedrock Edition 1.19.63 (identical protocol to 1.19.62, but different version due to Mojang mixup).
+
+## Fixes
+- Fixed `World Population` timer sometimes not being stopped, causing strange results in timings reports.
+
+# 4.15.3
+Released 7th March 2023.
+
+## Fixes
+- Fixed `/dumpmemory` crash when any object contained an `INF` or `NaN` float value.
+- Updated RakLib for security fixes.

changelogs/4.16-beta.md

@@ -0,0 +1,45 @@
+**For Minecraft: Bedrock Edition 1.19.62**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.16.0-BETA1
+Released 4th March 2023.
+
+## General
+- Added granular timings for packet encode, similar to the existing timings for packet decode.
+- Timings now covers several areas of the network system which were previously not counted by network timings, but were counted by total timings. This provides a better insight into the performance of the network system.
+
+## Performance
+- Improved performance of packet batch handling by avoiding unnecessary object allocations.
+- Improved performance of packet broadcasting when the broadcast size is below the batch threshold. Previously, the packets would be encoded once by every recipient, but now they are encoded once and then added to the send buffer of each session in their raw form.
+  - This change mostly affects servers with larger maps, where players are more widely distributed.
+
+## Build system
+- Added a new script `build/generate-bedrockdata-path-consts.php`, which must be run whenever BedrockData is updated. This script generates a class of constants with the file paths of all BedrockData files.
+
+## API
+### `pocketmine\entity`
+- The following new API methods have been added:
+  - `public Entity->getGravity() : float` - returns the entity's gravity acceleration in blocks/tick^2
+  - `public Entity->setGravity(float $gravity) : void` - sets the entity's gravity acceleration in blocks/tick^2
+
+## Internals
+- Now uses [`pocketmine/bedrock-data` 2.0.0](https://github.com/pmmp/BedrockData/releases/tag/2.0.0+bedrock-1.19.60).
+  - This version is now used by both PM4 and PM5, reducing maintenance burden.
+- Now uses [`pocketmine/bedrock-protocol` 19.3.0](https://github.com/pmmp/BedrockProtocol/releases/tag/19.3.0+bedrock-1.19.62).
+  - This version provides new APIs for handling packet batches which enabled improving performance and adding new features, such as detailed packet encode timings.
+- Crafting recipes and creative inventory data are now loaded from `recipes/legacy_recipes.json` and `recipes/legacy_creativeitems.json` respectively. Previously, these were loaded from BedrockData directly, but BedrockData 2.0 now uses a format which can't be supported in 4.x without BC breaks.
+- Added dependencies on [`pocketmine/bedrock-block-upgrade-schema`](https://github.com/pmmp/BedrockBlockUpgradeSchema) and [`pocketmine/bedrock-item-upgrade-schema`](https://github.com/pmmp/BedrockItemUpgradeSchema). These provide mapping files no longer present in BedrockData 2.0.
+- Reduced and/or eliminated most usages of `PacketBatch`, since it only appeared as a throwaway object and was therefore wasting performance.
+- `Compressor` now exposes `getCompressionThreshold()` instead of `willCompress()`, which allows determining whether a batch will be compressed without allocating it.
+- Added `pocketmine\data\bedrock\BedrockDataFiles`, an auto-generated class of constants with the file paths of all BedrockData files. This makes it easier to locate usages, detect unused files and avoid typos.
+
+# 4.16.0-BETA2
+Released 4th March 2023.
+
+## General
+- Fixed incorrect release channel for 4.16.0-BETA1.

changelogs/4.16.md

@@ -0,0 +1,41 @@
+**For Minecraft: Bedrock Edition 1.19.62**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.16.0
+Released 7th March 2023.
+
+## General
+- Added granular timings for packet encode, similar to the existing timings for packet decode.
+- Split `Player Network Send - Compression` timings into two timers, one for `Session Buffer` compression and one for `Broadcast` compression.
+- Timings now covers several areas of the network system which were previously not counted by network timings, but were counted by total timings. This provides a better insight into the performance of the network system.
+
+## Performance
+- Improved performance of packet batch handling by avoiding unnecessary object allocations.
+- Improved performance of packet broadcasting when the broadcast size is below the batch threshold. Previously, the packets would be encoded once by every recipient, but now they are encoded once and then added to the send buffer of each session in their raw form.
+  - This change mostly affects servers with larger maps, where players are more widely distributed.
+- Improved performance of packet broadcasting when the broadcast has only one recipient (allow the session to compress the packet with the rest of its buffer).
+
+## Build system
+- Added a new script `build/generate-bedrockdata-path-consts.php`, which must be run whenever BedrockData is updated. This script generates a class of constants with the file paths of all BedrockData files.
+
+## API
+### `pocketmine\entity`
+- The following new API methods have been added:
+  - `public Entity->getGravity() : float` - returns the entity's gravity acceleration in blocks/tick^2
+  - `public Entity->setGravity(float $gravity) : void` - sets the entity's gravity acceleration in blocks/tick^2
+
+## Internals
+- Now uses [`pocketmine/bedrock-data` 2.0.0](https://github.com/pmmp/BedrockData/releases/tag/2.0.0+bedrock-1.19.60).
+  - This version is now used by both PM4 and PM5, reducing maintenance burden.
+- Now uses [`pocketmine/bedrock-protocol` 19.3.0](https://github.com/pmmp/BedrockProtocol/releases/tag/19.3.0+bedrock-1.19.62).
+  - This version provides new APIs for handling packet batches which enabled improving performance and adding new features, such as detailed packet encode timings.
+- Crafting recipes and creative inventory data are now loaded from `recipes/legacy_recipes.json` and `recipes/legacy_creativeitems.json` respectively. Previously, these were loaded from BedrockData directly, but BedrockData 2.0 now uses a format which can't be supported in 4.x without BC breaks.
+- Added dependencies on [`pocketmine/bedrock-block-upgrade-schema`](https://github.com/pmmp/BedrockBlockUpgradeSchema) and [`pocketmine/bedrock-item-upgrade-schema`](https://github.com/pmmp/BedrockItemUpgradeSchema). These provide mapping files no longer present in BedrockData 2.0.
+- Reduced and/or eliminated most usages of `PacketBatch`, since it only appeared as a throwaway object and was therefore wasting performance.
+- `Compressor` now exposes `getCompressionThreshold()` instead of `willCompress()`, which allows determining whether a batch will be compressed without allocating it.
+- Added `pocketmine\data\bedrock\BedrockDataFiles`, an auto-generated class of constants with the file paths of all BedrockData files. This makes it easier to locate usages, detect unused files and avoid typos.

changelogs/4.17.md

@@ -0,0 +1,14 @@
+**For Minecraft: Bedrock Edition 1.19.70**
+
+### Note about API versions
+Plugins which don't touch the protocol and compatible with any previous 4.x.y version will also run on these releases and do not need API bumps.
+Plugin developers should **only** update their required API to this version if you need the changes in this build.
+
+**WARNING: If your plugin uses the protocol, you're not shielded by API change constraints.** You should consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if you do.
+
+# 4.17.0
+Released 14th March 2023.
+
+## General
+- Added support for Minecraft: Bedrock Edition 1.19.70.
+- Removed support for older versions.

changelogs/4.9.md

@@ -12,3 +12,25 @@ Released 20th September 2022.
 ## General
 - Added support for Minecraft: Bedrock Edition 1.19.30.
 - Removed support for older versions.
+
+# 4.9.1
+Released 11th October 2022.
+
+## Documentation
+- Added and improved documentation for many API methods in `Player` and `Block`.
+- Added missing `@internal` tag for `TaskHandler->setNextRun()`, `TaskHandler->remove()` and `TaskHandler->run()`.
+
+## Fixes
+- Flight state is now locked by the server in spectator mode. This prevents any attempt by the client to toggle flight mode.
+- Fixed entity health exceeding its max health after the expiry of Health Boost effect.
+- Fixed burp sound not being played when a player eats food.
+- Fixed placement conditions for mushrooms - they can now only be placed when the light level at the target is <= 12, or on podzol or mycelium.
+- Fixed sign text appearing to change colour and/or glow when using dye on a sign - since this feature is not yet implemented, no change should occur.
+- Fixed players drowning when sprint-swimming on the surface of water.
+
+## Internals
+- Added more detailed debug logging during the player login sequence.
+- Silenced debug spam during `PreSpawnPacketHandler`, considerably reducing debug noise when players join.
+- Fixed an edge case in `InventoryManager->removeWindow()`. This bug didn't have any effect on stable versions, but caused a `next-minor` development version to crash.
+- `Item`s returned by event getters are now cloned if modifying the result will have no useful side effects.
+- Updated `pocketmine/bedrock-data` to [`1.11.1`](https://github.com/pmmp/BedrockData/tree/1.11.1%2Bbedrock-1.19.30), which reduces bandwidth consumption during logins by not sending useless biome generation data.

composer.json

@@ -34,14 +34,16 @@
       "adhocore/json-comment": "^1.1",
       "fgrosse/phpasn1": "^2.3",
       "netresearch/jsonmapper": "^4.0",
-      "pocketmine/bedrock-data": "~1.11.0+bedrock-1.19.30",
-      "pocketmine/bedrock-protocol": "~13.0.0+bedrock-1.19.30",
+      "pocketmine/bedrock-block-upgrade-schema": "~1.1.1+bedrock-1.19.70",
+      "pocketmine/bedrock-data": "~2.1.1+bedrock-1.19.70",
+      "pocketmine/bedrock-item-upgrade-schema": "~1.1.0+bedrock-1.19.70",
+      "pocketmine/bedrock-protocol": "~20.0.0+bedrock-1.19.70",
       "pocketmine/binaryutils": "^0.2.1",
       "pocketmine/callback-validator": "^1.0.2",
       "pocketmine/classloader": "^0.2.0",
-      "pocketmine/color": "^0.2.0",
+      "pocketmine/color": "^0.3.0",
       "pocketmine/errorhandler": "^0.6.0",
-      "pocketmine/locale-data": "~2.8.0 <2.8.9",
+      "pocketmine/locale-data": "~2.18.0",
       "pocketmine/log": "^0.4.0",
       "pocketmine/log-pthreads": "^0.4.0",
       "pocketmine/math": "^0.4.0",
@@ -50,10 +52,11 @@
       "pocketmine/raklib-ipc": "^0.1.0",
       "pocketmine/snooze": "^0.3.0",
       "ramsey/uuid": "^4.1",
+      "symfony/filesystem": "^5.4",
       "webmozart/path-util": "^2.3"
    },
    "require-dev": {
-      "phpstan/phpstan": "1.8.5",
+      "phpstan/phpstan": "1.10.6",
       "phpstan/phpstan-phpunit": "^1.1.0",
       "phpstan/phpstan-strict-rules": "^1.2.0",
       "phpunit/phpunit": "^9.2"

resources/pocketmine.yml

@@ -119,8 +119,6 @@ chunk-sending:
   spawn-radius: 4
 
 chunk-ticking:
-  #Max amount of chunks processed each tick
-  per-tick: 40
   #Radius of chunks around a player to tick
   tick-radius: 3
   #Number of blocks inside ticking areas' subchunks that get ticked every tick. Higher values will accelerate events
@@ -168,6 +166,9 @@ timings:
   host: timings.pmmp.io
 
 console:
+  #Whether to accept commands via the console. If disabled, anything typed on the console will be ignored.
+  #Useful to save resources on headless servers where the console is never used (e.g. hosted server, Docker, etc.)
+  enable-input: true
   #Choose whether to enable server stats reporting on the console title.
   #NOTE: The title ticker will be disabled regardless if console colours are not enabled.
   title-tick: true

resources/resource_packs.yml

@@ -10,3 +10,4 @@ resource_stack:
   # - natural.zip
   # - vanilla.zip
   #If you want to force clients to use vanilla resources, you must place a vanilla resource pack in your resources folder and add it to the stack here.
+  #To specify a resource encryption key, put the key in the <resource>.key file alongside the resource pack. Example: vanilla.zip.key

src/CoreConstants.php

@@ -37,4 +37,6 @@ define('pocketmine\PATH', dirname(__DIR__) . '/');
 define('pocketmine\RESOURCE_PATH', dirname(__DIR__) . '/resources/');
 define('pocketmine\BEDROCK_DATA_PATH', dirname(__DIR__) . '/vendor/pocketmine/bedrock-data/');
 define('pocketmine\LOCALE_DATA_PATH', dirname(__DIR__) . '/vendor/pocketmine/locale-data/');
+define('pocketmine\BEDROCK_BLOCK_UPGRADE_SCHEMA_PATH', dirname(__DIR__) . '/vendor/pocketmine/bedrock-block-upgrade-schema/');
+define('pocketmine\BEDROCK_ITEM_UPGRADE_SCHEMA_PATH', dirname(__DIR__) . '/vendor/pocketmine/bedrock-item-upgrade-schema/');
 define('pocketmine\COMPOSER_AUTOLOADER_PATH', dirname(__DIR__) . '/vendor/autoload.php');

src/MemoryManager.php

@@ -30,7 +30,7 @@ use pocketmine\scheduler\GarbageCollectionTask;
 use pocketmine\timings\Timings;
 use pocketmine\utils\Process;
 use pocketmine\utils\Utils;
-use Webmozart\PathUtil\Path;
+use Symfony\Component\Filesystem\Path;
 use function arsort;
 use function count;
 use function fclose;
@@ -49,6 +49,7 @@ use function ini_get;
 use function ini_set;
 use function intdiv;
 use function is_array;
+use function is_float;
 use function is_object;
 use function is_resource;
 use function is_string;
@@ -69,6 +70,10 @@ use const JSON_UNESCAPED_SLASHES;
 use const SORT_NUMERIC;
 
 class MemoryManager{
+	private const DEFAULT_CHECK_RATE = Server::TARGET_TICKS_PER_SECOND;
+	private const DEFAULT_CONTINUOUS_TRIGGER_RATE = Server::TARGET_TICKS_PER_SECOND * 2;
+	private const DEFAULT_TICKS_PER_GC = 30 * 60 * Server::TARGET_TICKS_PER_SECOND;
+
 	private int $memoryLimit;
 	private int $globalMemoryLimit;
 	private int $checkRate;
@@ -113,20 +118,12 @@ class MemoryManager{
 			if($m <= 0){
 				$defaultMemory = 0;
 			}else{
-				switch(mb_strtoupper($matches[2])){
-					case "K":
-						$defaultMemory = intdiv($m, 1024);
-						break;
-					case "M":
-						$defaultMemory = $m;
-						break;
-					case "G":
-						$defaultMemory = $m * 1024;
-						break;
-					default:
-						$defaultMemory = $m;
-						break;
-				}
+				$defaultMemory = match(mb_strtoupper($matches[2])){
+					"K" => intdiv($m, 1024),
+					"M" => $m,
+					"G" => $m * 1024,
+					default => $m,
+				};
 			}
 		}
 
@@ -139,11 +136,11 @@ class MemoryManager{
 		}
 
 		$this->globalMemoryLimit = $config->getPropertyInt("memory.global-limit", 0) * 1024 * 1024;
-		$this->checkRate = $config->getPropertyInt("memory.check-rate", 20);
+		$this->checkRate = $config->getPropertyInt("memory.check-rate", self::DEFAULT_CHECK_RATE);
 		$this->continuousTrigger = $config->getPropertyBool("memory.continuous-trigger", true);
-		$this->continuousTriggerRate = $config->getPropertyInt("memory.continuous-trigger-rate", 30);
+		$this->continuousTriggerRate = $config->getPropertyInt("memory.continuous-trigger-rate", self::DEFAULT_CONTINUOUS_TRIGGER_RATE);
 
-		$this->garbageCollectionPeriod = $config->getPropertyInt("memory.garbage-collection.period", 36000);
+		$this->garbageCollectionPeriod = $config->getPropertyInt("memory.garbage-collection.period", self::DEFAULT_TICKS_PER_GC);
 		$this->garbageCollectionTrigger = $config->getPropertyBool("memory.garbage-collection.low-memory-trigger", true);
 		$this->garbageCollectionAsync = $config->getPropertyBool("memory.garbage-collection.collect-async-worker", true);
 
@@ -286,7 +283,7 @@ class MemoryManager{
 	/**
 	 * Static memory dumper accessible from any thread.
 	 *
-	 * @param mixed   $startingObject
+	 * @param mixed $startingObject
 	 */
 	public static function dumpMemory($startingObject, string $outputFolder, int $maxNesting, int $maxStringSize, \Logger $logger) : void{
 		$hardLimit = Utils::assumeNotFalse(ini_get('memory_limit'), "memory_limit INI directive should always exist");
@@ -398,7 +395,7 @@ class MemoryManager{
 
 		do{
 			$continue = false;
-			foreach($objects as $hash => $object){
+			foreach(Utils::stringifyKeys($objects) as $hash => $object){
 				if(!is_object($object)){
 					continue;
 				}
@@ -480,9 +477,14 @@ class MemoryManager{
 
 	/**
 	 * @param mixed    $from
-	 * @param object[] $objects reference parameter
+	 * @param object[] $objects   reference parameter
 	 * @param int[]    $refCounts reference parameter
 	 *
+	 * @phpstan-param array<string, object> $objects
+	 * @phpstan-param array<string, int> $refCounts
+	 * @phpstan-param-out array<string, object> $objects
+	 * @phpstan-param-out array<string, int> $refCounts
+	 *
 	 * @return mixed
 	 */
 	private static function continueDump($from, array &$objects, array &$refCounts, int $recursion, int $maxNesting, int $maxStringSize){
@@ -518,6 +520,8 @@ class MemoryManager{
 			$data = "(string) len(" . strlen($from) . ") " . substr(Utils::printable($from), 0, $maxStringSize);
 		}elseif(is_resource($from)){
 			$data = "(resource) " . print_r($from, true);
+		}elseif(is_float($from)){
+			$data = "(float) $from";
 		}else{
 			$data = $from;
 		}

src/PocketMine.php

@@ -34,16 +34,19 @@ namespace pocketmine {
 	use pocketmine\utils\Timezone;
 	use pocketmine\utils\Utils;
 	use pocketmine\wizard\SetupWizard;
-	use Webmozart\PathUtil\Path;
+	use Symfony\Component\Filesystem\Path;
 	use function defined;
 	use function extension_loaded;
 	use function function_exists;
 	use function getcwd;
+	use function is_dir;
+	use function mkdir;
 	use function phpversion;
 	use function preg_match;
 	use function preg_quote;
 	use function realpath;
 	use function version_compare;
+	use const DIRECTORY_SEPARATOR;
 
 	require_once __DIR__ . '/VersionInfo.php';
 
@@ -119,7 +122,7 @@ namespace pocketmine {
 			if(substr_count($pthreads_version, ".") < 2){
 				$pthreads_version = "0.$pthreads_version";
 			}
-			if(version_compare($pthreads_version, "4.0.0") < 0 || version_compare($pthreads_version, "5.0.0") > 0){
+			if(version_compare($pthreads_version, "4.0.0") < 0 || version_compare($pthreads_version, "5.0.0") >= 0){
 				$messages[] = "pthreads ^4.0.0 is required, while you have $pthreads_version.";
 			}
 		}
@@ -201,6 +204,22 @@ JIT_WARNING
 		ini_set('assert.exception', '1');
 	}
 
+	function getopt_string(string $opt) : ?string{
+		$opts = getopt("", ["$opt:"]);
+		if(isset($opts[$opt])){
+			if(is_string($opts[$opt])){
+				return $opts[$opt];
+			}
+			if(is_array($opts[$opt])){
+				critical_error("Cannot specify --$opt multiple times");
+			}else{
+				critical_error("Missing value for --$opt");
+			}
+			exit(1);
+		}
+		return null;
+	}
+
 	/**
 	 * @return void
 	 */
@@ -252,27 +271,42 @@ JIT_WARNING
 
 		ErrorToExceptionHandler::set();
 
-		$opts = getopt("", ["data:", "plugins:", "no-wizard", "enable-ansi", "disable-ansi"]);
-
 		$cwd = Utils::assumeNotFalse(realpath(Utils::assumeNotFalse(getcwd())));
-		$dataPath = isset($opts["data"]) ? $opts["data"] . DIRECTORY_SEPARATOR : $cwd . DIRECTORY_SEPARATOR;
-		$pluginPath = isset($opts["plugins"]) ? $opts["plugins"] . DIRECTORY_SEPARATOR : $cwd . DIRECTORY_SEPARATOR . "plugins" . DIRECTORY_SEPARATOR;
+		$dataPath = getopt_string("data") ?? $cwd;
+		$pluginPath = getopt_string("plugins") ?? $cwd . DIRECTORY_SEPARATOR . "plugins";
 		Filesystem::addCleanedPath($pluginPath, Filesystem::CLEAN_PATH_PLUGINS_PREFIX);
 
-		if(!file_exists($dataPath)){
-			mkdir($dataPath, 0777, true);
+		if(!@mkdir($dataPath, 0777, true) && !is_dir($dataPath)){
+			critical_error("Unable to create/access data directory at $dataPath. Check that the target location is accessible by the current user.");
+			exit(1);
 		}
+		//this has to be done after we're sure the data path exists
+		$dataPath = realpath($dataPath) . DIRECTORY_SEPARATOR;
 
 		$lockFilePath = Path::join($dataPath, 'server.lock');
-		if(($pid = Filesystem::createLockFile($lockFilePath)) !== null){
+		try{
+			$pid = Filesystem::createLockFile($lockFilePath);
+		}catch(\InvalidArgumentException $e){
+			critical_error($e->getMessage());
+			critical_error("Please ensure that there is enough space on the disk and that the current user has read/write permissions to the selected data directory $dataPath.");
+			exit(1);
+		}
+		if($pid !== null){
 			critical_error("Another " . VersionInfo::NAME . " instance (PID $pid) is already using this folder (" . realpath($dataPath) . ").");
 			critical_error("Please stop the other server first before running a new one.");
 			exit(1);
 		}
 
+		if(!@mkdir($pluginPath, 0777, true) && !is_dir($pluginPath)){
+			critical_error("Unable to create plugin directory at $pluginPath. Check that the target location is accessible by the current user.");
+			exit(1);
+		}
+		$pluginPath = realpath($pluginPath) . DIRECTORY_SEPARATOR;
+
 		//Logger has a dependency on timezone
 		Timezone::init();
 
+		$opts = getopt("", ["no-wizard", "enable-ansi", "disable-ansi"]);
 		if(isset($opts["enable-ansi"])){
 			Terminal::init(true);
 		}elseif(isset($opts["disable-ansi"])){

src/Server.php

@@ -31,7 +31,7 @@ use pocketmine\command\Command;
 use pocketmine\command\CommandSender;
 use pocketmine\command\SimpleCommandMap;
 use pocketmine\console\ConsoleCommandSender;
-use pocketmine\console\ConsoleReaderThread;
+use pocketmine\console\ConsoleReaderChildProcessDaemon;
 use pocketmine\crafting\CraftingManager;
 use pocketmine\crafting\CraftingManagerFromDataHelper;
 use pocketmine\crash\CrashDump;
@@ -49,10 +49,7 @@ use pocketmine\lang\KnownTranslationFactory;
 use pocketmine\lang\Language;
 use pocketmine\lang\LanguageNotFoundException;
 use pocketmine\lang\Translatable;
-use pocketmine\nbt\BigEndianNbtSerializer;
-use pocketmine\nbt\NbtDataException;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\nbt\TreeRoot;
 use pocketmine\network\mcpe\compression\CompressBatchPromise;
 use pocketmine\network\mcpe\compression\CompressBatchTask;
 use pocketmine\network\mcpe\compression\Compressor;
@@ -72,9 +69,13 @@ use pocketmine\network\query\QueryInfo;
 use pocketmine\network\upnp\UPnPNetworkInterface;
 use pocketmine\permission\BanList;
 use pocketmine\permission\DefaultPermissions;
+use pocketmine\player\DatFilePlayerDataProvider;
 use pocketmine\player\GameMode;
 use pocketmine\player\OfflinePlayer;
 use pocketmine\player\Player;
+use pocketmine\player\PlayerDataLoadException;
+use pocketmine\player\PlayerDataProvider;
+use pocketmine\player\PlayerDataSaveException;
 use pocketmine\player\PlayerInfo;
 use pocketmine\plugin\PharPluginLoader;
 use pocketmine\plugin\Plugin;
@@ -88,12 +89,12 @@ use pocketmine\promise\PromiseResolver;
 use pocketmine\resourcepacks\ResourcePackManager;
 use pocketmine\scheduler\AsyncPool;
 use pocketmine\snooze\SleeperHandler;
-use pocketmine\snooze\SleeperNotifier;
 use pocketmine\stats\SendUsageTask;
 use pocketmine\timings\Timings;
 use pocketmine\timings\TimingsHandler;
 use pocketmine\updater\UpdateChecker;
 use pocketmine\utils\AssumptionFailedError;
+use pocketmine\utils\BroadcastLoggerForwarder;
 use pocketmine\utils\Config;
 use pocketmine\utils\Filesystem;
 use pocketmine\utils\Internet;
@@ -105,17 +106,18 @@ use pocketmine\utils\SignalHandler;
 use pocketmine\utils\Terminal;
 use pocketmine\utils\TextFormat;
 use pocketmine\utils\Utils;
-use pocketmine\world\format\Chunk;
 use pocketmine\world\format\io\WorldProviderManager;
 use pocketmine\world\format\io\WritableWorldProviderManagerEntry;
 use pocketmine\world\generator\Generator;
 use pocketmine\world\generator\GeneratorManager;
 use pocketmine\world\generator\InvalidGeneratorOptionsException;
+use pocketmine\world\Position;
 use pocketmine\world\World;
 use pocketmine\world\WorldCreationOptions;
 use pocketmine\world\WorldManager;
 use Ramsey\Uuid\UuidInterface;
-use Webmozart\PathUtil\Path;
+use Symfony\Component\Filesystem\Path;
+use function array_fill;
 use function array_sum;
 use function base64_encode;
 use function cli_set_process_title;
@@ -124,7 +126,6 @@ use function count;
 use function date;
 use function fclose;
 use function file_exists;
-use function file_get_contents;
 use function file_put_contents;
 use function filemtime;
 use function fopen;
@@ -161,13 +162,9 @@ use function time;
 use function touch;
 use function trim;
 use function yaml_parse;
-use function zlib_decode;
-use function zlib_encode;
 use const DIRECTORY_SEPARATOR;
 use const PHP_EOL;
 use const PHP_INT_MAX;
-use const PTHREADS_INHERIT_NONE;
-use const ZLIB_ENCODING_GZIP;
 
 /**
  * The class that manages everything
@@ -185,9 +182,30 @@ class Server{
 	public const DEFAULT_PORT_IPV6 = 19133;
 	public const DEFAULT_MAX_VIEW_DISTANCE = 16;
 
+	/**
+	 * Worlds, network, commands and most other things are polled this many times per second on average.
+	 * Between ticks, the server will sleep to ensure that the average tick rate is maintained.
+	 * It may wake up between ticks if a Snooze notification source is triggered (e.g. to process network packets).
+	 */
+	public const TARGET_TICKS_PER_SECOND = 20;
+	/**
+	 * The average time between ticks, in seconds.
+	 */
+	public const TARGET_SECONDS_PER_TICK = 1 / self::TARGET_TICKS_PER_SECOND;
+	public const TARGET_NANOSECONDS_PER_TICK = 1_000_000_000 / self::TARGET_TICKS_PER_SECOND;
+
+	/**
+	 * The TPS threshold below which the server will generate log warnings.
+	 */
+	private const TPS_OVERLOAD_WARNING_THRESHOLD = self::TARGET_TICKS_PER_SECOND * 0.6;
+
+	private const TICKS_PER_WORLD_CACHE_CLEAR = 5 * self::TARGET_TICKS_PER_SECOND;
+	private const TICKS_PER_TPS_OVERLOAD_WARNING = 5 * self::TARGET_TICKS_PER_SECOND;
+	private const TICKS_PER_STATS_REPORT = 300 * self::TARGET_TICKS_PER_SECOND;
+
 	private static ?Server $instance = null;
 
-	private SleeperHandler $tickSleeper;
+	private TimeTrackingSleeperHandler $tickSleeper;
 
 	private BanList $banByName;
 
@@ -203,7 +221,7 @@ class Server{
 
 	private PluginManager $pluginManager;
 
-	private float $profilingTickRate = 20;
+	private float $profilingTickRate = self::TARGET_TICKS_PER_SECOND;
 
 	private UpdateChecker $updater;
 
@@ -213,10 +231,10 @@ class Server{
 	private int $tickCounter = 0;
 	private float $nextTick = 0;
 	/** @var float[] */
-	private array $tickAverage = [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20];
+	private array $tickAverage;
 	/** @var float[] */
-	private array $useAverage = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
-	private float $currentTPS = 20;
+	private array $useAverage;
+	private float $currentTPS = self::TARGET_TICKS_PER_SECOND;
 	private float $currentUse = 0;
 	private float $startTime;
 
@@ -226,7 +244,8 @@ class Server{
 
 	private MemoryManager $memoryManager;
 
-	private ConsoleReaderThread $console;
+	private ?ConsoleReaderChildProcessDaemon $console = null;
+	private ?ConsoleCommandSender $consoleSender = null;
 
 	private SimpleCommandMap $commandMap;
 
@@ -251,6 +270,8 @@ class Server{
 	private string $dataPath;
 	private string $pluginPath;
 
+	private PlayerDataProvider $playerDataProvider;
+
 	/**
 	 * @var string[]
 	 * @phpstan-var array<string, string>
@@ -484,49 +505,22 @@ class Server{
 		return $result;
 	}
 
-	private function getPlayerDataPath(string $username) : string{
-		return Path::join($this->getDataPath(), 'players', strtolower($username) . '.dat');
-	}
-
 	/**
 	 * Returns whether the server has stored any saved data for this player.
 	 */
 	public function hasOfflinePlayerData(string $name) : bool{
-		return file_exists($this->getPlayerDataPath($name));
-	}
-
-	private function handleCorruptedPlayerData(string $name) : void{
-		$path = $this->getPlayerDataPath($name);
-		rename($path, $path . '.bak');
-		$this->logger->error($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_data_playerCorrupted($name)));
+		return $this->playerDataProvider->hasData($name);
 	}
 
 	public function getOfflinePlayerData(string $name) : ?CompoundTag{
 		return Timings::$syncPlayerDataLoad->time(function() use ($name) : ?CompoundTag{
-			$name = strtolower($name);
-			$path = $this->getPlayerDataPath($name);
-
-			if(file_exists($path)){
-				$contents = @file_get_contents($path);
-				if($contents === false){
-					throw new \RuntimeException("Failed to read player data file \"$path\" (permission denied?)");
-				}
-				$decompressed = @zlib_decode($contents);
-				if($decompressed === false){
-					$this->logger->debug("Failed to decompress raw player data for \"$name\"");
-					$this->handleCorruptedPlayerData($name);
-					return null;
-				}
-
-				try{
-					return (new BigEndianNbtSerializer())->read($decompressed)->mustGetCompoundTag();
-				}catch(NbtDataException $e){ //corrupt data
-					$this->logger->debug("Failed to decode NBT data for \"$name\": " . $e->getMessage());
-					$this->handleCorruptedPlayerData($name);
-					return null;
-				}
+			try{
+				return $this->playerDataProvider->loadData($name);
+			}catch(PlayerDataLoadException $e){
+				$this->logger->debug("Failed to load player data for $name: " . $e->getMessage());
+				$this->logger->error($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_data_playerCorrupted($name)));
+				return null;
 			}
-			return null;
 		});
 	}
 
@@ -540,11 +534,9 @@ class Server{
 
 		if(!$ev->isCancelled()){
 			Timings::$syncPlayerDataSave->time(function() use ($name, $ev) : void{
-				$nbt = new BigEndianNbtSerializer();
-				$contents = Utils::assumeNotFalse(zlib_encode($nbt->write(new TreeRoot($ev->getSaveData())), ZLIB_ENCODING_GZIP), "zlib_encode() failed unexpectedly");
 				try{
-					Filesystem::safeFilePutContents($this->getPlayerDataPath($name), $contents);
-				}catch(\RuntimeException $e){
+					$this->playerDataProvider->saveData($name, $ev->getSaveData());
+				}catch(PlayerDataSaveException $e){
 					$this->logger->critical($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_data_saveError($name, $e->getMessage())));
 					$this->logger->logException($e);
 				}
@@ -560,55 +552,55 @@ class Server{
 		$ev->call();
 		$class = $ev->getPlayerClass();
 
-		if($offlinePlayerData !== null && ($world = $this->worldManager->getWorldByName($offlinePlayerData->getString("Level", ""))) !== null){
+		if($offlinePlayerData !== null && ($world = $this->worldManager->getWorldByName($offlinePlayerData->getString(Player::TAG_LEVEL, ""))) !== null){
 			$playerPos = EntityDataHelper::parseLocation($offlinePlayerData, $world);
-			$spawn = $playerPos->asVector3();
 		}else{
 			$world = $this->worldManager->getDefaultWorld();
 			if($world === null){
 				throw new AssumptionFailedError("Default world should always be loaded");
 			}
 			$playerPos = null;
-			$spawn = $world->getSpawnLocation();
 		}
 		/** @phpstan-var PromiseResolver<Player> $playerPromiseResolver */
 		$playerPromiseResolver = new PromiseResolver();
-		$world->requestChunkPopulation($spawn->getFloorX() >> Chunk::COORD_BIT_SIZE, $spawn->getFloorZ() >> Chunk::COORD_BIT_SIZE, null)->onCompletion(
-			function() use ($playerPromiseResolver, $class, $session, $playerInfo, $authenticated, $world, $playerPos, $spawn, $offlinePlayerData) : void{
-				if(!$session->isConnected()){
-					$playerPromiseResolver->reject();
-					return;
-				}
 
-				/* Stick with the original spawn at the time of generation request, even if it changed since then.
-				 * This is because we know for sure that that chunk will be generated, but the one at the new location
-				 * might not be, and it would be much more complex to go back and redo the whole thing.
-				 *
-				 * TODO: this relies on the assumption that getSafeSpawn() will only alter the Y coordinate of the
-				 * provided position. If this assumption is broken, we'll start seeing crashes in here.
-				 */
-
-				/**
-				 * @see Player::__construct()
-				 * @var Player $player
-				 */
-				$player = new $class($this, $session, $playerInfo, $authenticated, $playerPos ?? Location::fromObject($world->getSafeSpawn($spawn), $world), $offlinePlayerData);
-				if(!$player->hasPlayedBefore()){
-					$player->onGround = true;  //TODO: this hack is needed for new players in-air ticks - they don't get detected as on-ground until they move
-				}
-				$playerPromiseResolver->resolve($player);
-			},
-			static function() use ($playerPromiseResolver, $session) : void{
-				if($session->isConnected()){
-					$session->disconnect("Spawn terrain generation failed");
-				}
-				$playerPromiseResolver->reject();
+		$createPlayer = function(Location $location) use ($playerPromiseResolver, $class, $session, $playerInfo, $authenticated, $offlinePlayerData) : void{
+			$player = new $class($this, $session, $playerInfo, $authenticated, $location, $offlinePlayerData);
+			if(!$player->hasPlayedBefore()){
+				$player->onGround = true; //TODO: this hack is needed for new players in-air ticks - they don't get detected as on-ground until they move
 			}
-		);
+			$playerPromiseResolver->resolve($player);
+		};
+
+		if($playerPos === null){ //new player or no valid position due to world not being loaded
+			$world->requestSafeSpawn()->onCompletion(
+				function(Position $spawn) use ($createPlayer, $playerPromiseResolver, $session, $world) : void{
+					if(!$session->isConnected()){
+						$playerPromiseResolver->reject();
+						return;
+					}
+					$createPlayer(Location::fromObject($spawn, $world));
+				},
+				function() use ($playerPromiseResolver, $session) : void{
+					if($session->isConnected()){
+						//TODO: this needs to be localized - this might be reached if the spawn world was unloaded while the player was logging in
+						$session->disconnect("Failed to find a safe spawn location");
+					}
+					$playerPromiseResolver->reject();
+				}
+			);
+		}else{ //returning player with a valid position - safe spawn not required
+			$createPlayer($playerPos);
+		}
+
 		return $playerPromiseResolver->getPromise();
 	}
 
 	/**
+	 * @deprecated This method's results are unpredictable. The string "Steve" will return the player named "SteveJobs",
+	 * until another player named "SteveJ" joins the server, at which point it will return that player instead. Prefer
+	 * filtering the results of {@link Server::getOnlinePlayers()} yourself.
+	 *
 	 * Returns an online player whose name begins with or equals the given string (case insensitive).
 	 * The closest match will be returned, or null if there are no online matches.
 	 *
@@ -776,8 +768,11 @@ class Server{
 		}
 		self::$instance = $this;
 		$this->startTime = microtime(true);
+		$this->tickAverage = array_fill(0, self::TARGET_TICKS_PER_SECOND, self::TARGET_TICKS_PER_SECOND);
+		$this->useAverage = array_fill(0, self::TARGET_TICKS_PER_SECOND, 0);
 
-		$this->tickSleeper = new SleeperHandler();
+		Timings::init();
+		$this->tickSleeper = new TimeTrackingSleeperHandler(Timings::$serverInterrupts);
 
 		$this->signalHandler = new SignalHandler(function() : void{
 			$this->logger->info("Received signal interrupt, stopping the server");
@@ -802,7 +797,7 @@ class Server{
 			$this->logger->info("Loading server configuration");
 			$pocketmineYmlPath = Path::join($this->dataPath, "pocketmine.yml");
 			if(!file_exists($pocketmineYmlPath)){
-				$content = Utils::assumeNotFalse(file_get_contents(Path::join(\pocketmine\RESOURCE_PATH, "pocketmine.yml")), "Missing required resource file");
+				$content = Filesystem::fileGetContents(Path::join(\pocketmine\RESOURCE_PATH, "pocketmine.yml"));
 				if(VersionInfo::IS_DEVELOPMENT_BUILD){
 					$content = str_replace("preferred-channel: stable", "preferred-channel: beta", $content);
 				}
@@ -896,6 +891,9 @@ class Server{
 			if($this->configGroup->getPropertyInt("network.batch-threshold", 256) >= 0){
 				$netCompressionThreshold = $this->configGroup->getPropertyInt("network.batch-threshold", 256);
 			}
+			if($netCompressionThreshold < 0){
+				$netCompressionThreshold = null;
+			}
 
 			$netCompressionLevel = $this->configGroup->getPropertyInt("network.compression-level", 6);
 			if($netCompressionLevel < 1 || $netCompressionLevel > 9){
@@ -957,15 +955,14 @@ class Server{
 			)));
 			$this->logger->info($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_server_license($this->getName())));
 
-			Timings::init();
 			TimingsHandler::setEnabled($this->configGroup->getPropertyBool("settings.enable-profiling", false));
-			$this->profilingTickRate = $this->configGroup->getPropertyInt("settings.profile-report-trigger", 20);
+			$this->profilingTickRate = $this->configGroup->getPropertyInt("settings.profile-report-trigger", self::TARGET_TICKS_PER_SECOND);
 
 			DefaultPermissions::registerCorePermissions();
 
 			$this->commandMap = new SimpleCommandMap($this);
 
-			$this->craftingManager = CraftingManagerFromDataHelper::make(Path::join(\pocketmine\BEDROCK_DATA_PATH, "recipes.json"));
+			$this->craftingManager = CraftingManagerFromDataHelper::make(Path::join(\pocketmine\RESOURCE_PATH, "legacy_recipes.json"));
 
 			$this->resourceManager = new ResourcePackManager(Path::join($this->getDataPath(), "resource_packs"), $this->logger);
 
@@ -975,7 +972,7 @@ class Server{
 				copy(Path::join(\pocketmine\RESOURCE_PATH, 'plugin_list.yml'), $graylistFile);
 			}
 			try{
-				$pluginGraylist = PluginGraylist::fromArray(yaml_parse(file_get_contents($graylistFile)));
+				$pluginGraylist = PluginGraylist::fromArray(yaml_parse(Filesystem::fileGetContents($graylistFile)));
 			}catch(\InvalidArgumentException $e){
 				$this->logger->emergency("Failed to load $graylistFile: " . $e->getMessage());
 				$this->forceShutdownExit();
@@ -997,12 +994,14 @@ class Server{
 
 			$this->worldManager = new WorldManager($this, Path::join($this->dataPath, "worlds"), $providerManager);
 			$this->worldManager->setAutoSave($this->configGroup->getConfigBool("auto-save", $this->worldManager->getAutoSave()));
-			$this->worldManager->setAutoSaveInterval($this->configGroup->getPropertyInt("ticks-per.autosave", 6000));
+			$this->worldManager->setAutoSaveInterval($this->configGroup->getPropertyInt("ticks-per.autosave", $this->worldManager->getAutoSaveInterval()));
 
 			$this->updater = new UpdateChecker($this, $this->configGroup->getPropertyString("auto-updater.host", "update.pmmp.io"));
 
 			$this->queryInfo = new QueryInfo($this);
 
+			$this->playerDataProvider = new DatFilePlayerDataProvider(Path::join($this->dataPath, "players"));
+
 			register_shutdown_function([$this, "crashDump"]);
 
 			$loadErrorCount = 0;
@@ -1035,7 +1034,7 @@ class Server{
 			}
 
 			if($this->configGroup->getPropertyBool("anonymous-statistics.enabled", true)){
-				$this->sendUsageTicker = 6000;
+				$this->sendUsageTicker = self::TICKS_PER_STATS_REPORT;
 				$this->sendUsage(SendUsageTask::TYPE_OPEN);
 			}
 
@@ -1045,22 +1044,14 @@ class Server{
 			$this->logger->info($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_server_donate(TextFormat::AQUA . "https://patreon.com/pocketminemp" . TextFormat::RESET)));
 			$this->logger->info($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_server_startFinished(strval(round(microtime(true) - $this->startTime, 3)))));
 
-			//TODO: move console parts to a separate component
-			$consoleSender = new ConsoleCommandSender($this, $this->language);
-			$this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_ADMINISTRATIVE, $consoleSender);
-			$this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_USERS, $consoleSender);
+			$forwarder = new BroadcastLoggerForwarder($this, $this->logger, $this->language);
+			$this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_ADMINISTRATIVE, $forwarder);
+			$this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_USERS, $forwarder);
 
-			$consoleNotifier = new SleeperNotifier();
-			$commandBuffer = new \Threaded();
-			$this->console = new ConsoleReaderThread($commandBuffer, $consoleNotifier);
-			$this->tickSleeper->addNotifier($consoleNotifier, function() use ($commandBuffer, $consoleSender) : void{
-				Timings::$serverCommand->startTiming();
-				while(($line = $commandBuffer->shift()) !== null){
-					$this->dispatchCommand($consoleSender, (string) $line);
-				}
-				Timings::$serverCommand->stopTiming();
-			});
-			$this->console->start(PTHREADS_INHERIT_NONE);
+			//TODO: move console parts to a separate component
+			if($this->configGroup->getPropertyBool("console.enable-input", true)){
+				$this->console = new ConsoleReaderChildProcessDaemon($this->logger);
+			}
 
 			$this->tickProcessor();
 			$this->forceShutdown();
@@ -1272,7 +1263,7 @@ class Server{
 	}
 
 	/**
-	 * @param CommandSender[]|null        $recipients
+	 * @param CommandSender[]|null $recipients
 	 */
 	public function broadcastMessage(Translatable|string $message, ?array $recipients = null) : int{
 		$recipients = $recipients ?? $this->getBroadcastChannelSubscribers(self::BROADCAST_CHANNEL_USERS);
@@ -1325,9 +1316,9 @@ class Server{
 	}
 
 	/**
-	 * @param int           $fadeIn Duration in ticks for fade-in. If -1 is given, client-sided defaults will be used.
-	 * @param int           $stay Duration in ticks to stay on screen for
-	 * @param int           $fadeOut Duration in ticks for fade-out.
+	 * @param int           $fadeIn     Duration in ticks for fade-in. If -1 is given, client-sided defaults will be used.
+	 * @param int           $stay       Duration in ticks to stay on screen for
+	 * @param int           $fadeOut    Duration in ticks for fade-out.
 	 * @param Player[]|null $recipients
 	 */
 	public function broadcastTitle(string $title, string $subtitle = "", int $fadeIn = -1, int $stay = -1, int $fadeOut = -1, ?array $recipients = null) : int{
@@ -1390,14 +1381,16 @@ class Server{
 	 *
 	 * @param bool|null $sync Compression on the main thread (true) or workers (false). Default is automatic (null).
 	 */
-	public function prepareBatch(PacketBatch $stream, Compressor $compressor, ?bool $sync = null) : CompressBatchPromise{
+	public function prepareBatch(PacketBatch $stream, Compressor $compressor, ?bool $sync = null, ?TimingsHandler $timings = null) : CompressBatchPromise{
+		$timings ??= Timings::$playerNetworkSendCompress;
 		try{
-			Timings::$playerNetworkSendCompress->startTiming();
+			$timings->startTiming();
 
 			$buffer = $stream->getBuffer();
 
 			if($sync === null){
-				$sync = !($this->networkCompressionAsync && $compressor->willCompress($buffer));
+				$threshold = $compressor->getCompressionThreshold();
+				$sync = !$this->networkCompressionAsync || $threshold === null || strlen($stream->getBuffer()) < $threshold;
 			}
 
 			$promise = new CompressBatchPromise();
@@ -1410,7 +1403,7 @@ class Server{
 
 			return $promise;
 		}finally{
-			Timings::$playerNetworkSendCompress->stopTiming();
+			$timings->stopTiming();
 		}
 	}
 
@@ -1513,7 +1506,7 @@ class Server{
 				$this->configGroup->save();
 			}
 
-			if(isset($this->console)){
+			if($this->console !== null){
 				$this->getLogger()->debug("Closing console");
 				$this->console->quit();
 			}
@@ -1720,7 +1713,7 @@ class Server{
 		$session = $player->getNetworkSession();
 		$position = $player->getPosition();
 		$this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_player_logIn(
-			TextFormat::AQUA . $player->getName() . TextFormat::WHITE,
+			TextFormat::AQUA . $player->getName() . TextFormat::RESET,
 			$session->getIp(),
 			(string) $session->getPort(),
 			(string) $player->getId(),
@@ -1825,11 +1818,11 @@ class Server{
 		$this->network->tick();
 		Timings::$connection->stopTiming();
 
-		if(($this->tickCounter % 20) === 0){
+		if(($this->tickCounter % self::TARGET_TICKS_PER_SECOND) === 0){
 			if($this->doTitleTick){
 				$this->titleTick();
 			}
-			$this->currentTPS = 20;
+			$this->currentTPS = self::TARGET_TICKS_PER_SECOND;
 			$this->currentUse = 0;
 
 			$queryRegenerateEvent = new QueryRegenerateEvent(new QueryInfo($this));
@@ -1841,38 +1834,49 @@ class Server{
 		}
 
 		if($this->sendUsageTicker > 0 && --$this->sendUsageTicker === 0){
-			$this->sendUsageTicker = 6000;
+			$this->sendUsageTicker = self::TICKS_PER_STATS_REPORT;
 			$this->sendUsage(SendUsageTask::TYPE_STATUS);
 		}
 
-		if(($this->tickCounter % 100) === 0){
+		if(($this->tickCounter % self::TICKS_PER_WORLD_CACHE_CLEAR) === 0){
 			foreach($this->worldManager->getWorlds() as $world){
 				$world->clearCache();
 			}
+		}
 
-			if($this->getTicksPerSecondAverage() < 12){
-				$this->logger->warning($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_server_tickOverload()));
-			}
+		if(($this->tickCounter % self::TICKS_PER_TPS_OVERLOAD_WARNING) === 0 && $this->getTicksPerSecondAverage() < self::TPS_OVERLOAD_WARNING_THRESHOLD){
+			$this->logger->warning($this->getLanguage()->translate(KnownTranslationFactory::pocketmine_server_tickOverload()));
 		}
 
 		$this->getMemoryManager()->check();
 
+		if($this->console !== null){
+			Timings::$serverCommand->startTiming();
+			while(($line = $this->console->readLine()) !== null){
+				$this->consoleSender ??= new ConsoleCommandSender($this, $this->language);
+				$this->dispatchCommand($this->consoleSender, $line);
+			}
+			Timings::$serverCommand->stopTiming();
+		}
+
 		Timings::$serverTick->stopTiming();
 
 		$now = microtime(true);
-		$this->currentTPS = min(20, 1 / max(0.001, $now - $tickTime));
-		$this->currentUse = min(1, ($now - $tickTime) / 0.05);
+		$totalTickTimeSeconds = $now - $tickTime + ($this->tickSleeper->getNotificationProcessingTime() / 1_000_000_000);
+		$this->currentTPS = min(self::TARGET_TICKS_PER_SECOND, 1 / max(0.001, $totalTickTimeSeconds));
+		$this->currentUse = min(1, $totalTickTimeSeconds / self::TARGET_SECONDS_PER_TICK);
 
 		TimingsHandler::tick($this->currentTPS <= $this->profilingTickRate);
 
-		$idx = $this->tickCounter % 20;
+		$idx = $this->tickCounter % self::TARGET_TICKS_PER_SECOND;
 		$this->tickAverage[$idx] = $this->currentTPS;
 		$this->useAverage[$idx] = $this->currentUse;
+		$this->tickSleeper->resetNotificationProcessingTime();
 
 		if(($this->nextTick - $tickTime) < -1){
 			$this->nextTick = $tickTime;
 		}else{
-			$this->nextTick += 0.05;
+			$this->nextTick += self::TARGET_SECONDS_PER_TICK;
 		}
 	}
 }

src/ServerConfigGroup.php

@@ -44,7 +44,7 @@ final class ServerConfigGroup{
 	){}
 
 	/**
-	 * @param mixed  $defaultValue
+	 * @param mixed $defaultValue
 	 *
 	 * @return mixed
 	 */

src/TimeTrackingSleeperHandler.php

@@ -0,0 +1,64 @@
+<?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;
+
+use pocketmine\snooze\SleeperHandler;
+use pocketmine\timings\TimingsHandler;
+use function hrtime;
+
+/**
+ * Custom Snooze sleeper handler which captures notification processing time.
+ * @internal
+ */
+final class TimeTrackingSleeperHandler extends SleeperHandler{
+
+	private int $notificationProcessingTimeNs = 0;
+
+	public function __construct(
+		private TimingsHandler $timings
+	){
+		parent::__construct();
+	}
+
+	/**
+	 * Returns the time in nanoseconds spent processing notifications since the last reset.
+	 */
+	public function getNotificationProcessingTime() : int{ return $this->notificationProcessingTimeNs; }
+
+	/**
+	 * Resets the notification processing time tracker to zero.
+	 */
+	public function resetNotificationProcessingTime() : void{ $this->notificationProcessingTimeNs = 0; }
+
+	public function processNotifications() : void{
+		$startTime = hrtime(true);
+		$this->timings->startTiming();
+		try{
+			parent::processNotifications();
+		}finally{
+			$this->notificationProcessingTimeNs += hrtime(true) - $startTime;
+			$this->timings->stopTiming();
+		}
+	}
+}

src/VersionInfo.php

@@ -31,7 +31,7 @@ use function str_repeat;
 
 final class VersionInfo{
 	public const NAME = "PocketMine-MP";
-	public const BASE_VERSION = "4.9.0";
+	public const BASE_VERSION = "4.17.0";
 	public const IS_DEVELOPMENT_BUILD = false;
 	public const BUILD_CHANNEL = "stable";
 

src/block/Bamboo.php

@@ -164,9 +164,10 @@ class Bamboo extends Transparent{
 	}
 
 	public function onNearbyBlockChange() : void{
-		$below = $this->position->getWorld()->getBlock($this->position->down());
+		$world = $this->position->getWorld();
+		$below = $world->getBlock($this->position->down());
 		if(!$this->canBeSupportedBy($below) && !$below->isSameType($this)){
-			$this->position->getWorld()->useBreakOn($this->position);
+			$world->useBreakOn($this->position);
 		}
 	}
 
@@ -212,7 +213,7 @@ class Bamboo extends Transparent{
 			}
 		}
 
-		$tx = new BlockTransaction($this->position->getWorld());
+		$tx = new BlockTransaction($world);
 		foreach($newBlocks as $idx => $newBlock){
 			$tx->addBlock($this->position->subtract(0, $idx - $growAmount, 0), $newBlock);
 		}

src/block/BambooSapling.php

@@ -82,8 +82,9 @@ final class BambooSapling extends Flowable{
 	}
 
 	public function onNearbyBlockChange() : void{
-		if(!$this->canBeSupportedBy($this->position->getWorld()->getBlock($this->position->down()))){
-			$this->position->getWorld()->useBreakOn($this->position);
+		$world = $this->position->getWorld();
+		if(!$this->canBeSupportedBy($world->getBlock($this->position->down()))){
+			$world->useBreakOn($this->position);
 		}
 	}
 

src/block/BaseBanner.php

@@ -87,7 +87,7 @@ abstract class BaseBanner extends Transparent{
 	}
 
 	/**
-	 * @param BannerPatternLayer[]             $patterns
+	 * @param BannerPatternLayer[] $patterns
 	 *
 	 * @phpstan-param list<BannerPatternLayer> $patterns
 	 * @return $this
@@ -112,7 +112,14 @@ abstract class BaseBanner extends Transparent{
 		return SupportType::NONE();
 	}
 
+	private function canBeSupportedBy(Block $block) : bool{
+		return $block->isSolid();
+	}
+
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		if(!$this->canBeSupportedBy($blockReplace->getSide($this->getSupportingFace()))){
+			return false;
+		}
 		if($item instanceof ItemBanner){
 			$this->color = $item->getColor();
 			$this->setPatterns($item->getPatterns());
@@ -124,7 +131,7 @@ abstract class BaseBanner extends Transparent{
 	abstract protected function getSupportingFace() : int;
 
 	public function onNearbyBlockChange() : void{
-		if($this->getSide($this->getSupportingFace())->getId() === BlockLegacyIds::AIR){
+		if(!$this->canBeSupportedBy($this->getSide($this->getSupportingFace()))){
 			$this->position->getWorld()->useBreakOn($this->position);
 		}
 	}

src/block/BaseCoral.php

@@ -26,6 +26,7 @@ namespace pocketmine\block;
 use pocketmine\block\utils\CoralType;
 use pocketmine\block\utils\CoralTypeTrait;
 use pocketmine\block\utils\SupportType;
+use pocketmine\event\block\BlockDeathEvent;
 use pocketmine\item\Item;
 
 abstract class BaseCoral extends Transparent{
@@ -50,7 +51,11 @@ abstract class BaseCoral extends Transparent{
 
 			//TODO: check water inside the block itself (not supported on the API yet)
 			if(!$hasWater){
-				$world->setBlock($this->position, $this->setDead(true));
+				$ev = new BlockDeathEvent($this, $this->setDead(true));
+				$ev->call();
+				if(!$ev->isCancelled()){
+					$world->setBlock($this->position, $ev->getNewState());
+				}
 			}
 		}
 	}

src/block/BaseRail.php

@@ -162,6 +162,7 @@ abstract class BaseRail extends Flowable{
 		$thisConnections = $this->getConnectedDirections();
 		$changed = false;
 
+		$world = $this->position->getWorld();
 		do{
 			$possible = $this->getPossibleConnectionDirections($thisConnections);
 			$continue = false;
@@ -189,7 +190,7 @@ abstract class BaseRail extends Flowable{
 				if(isset($otherPossible[$otherSide])){
 					$otherConnections[] = $otherSide;
 					$other->setConnections($otherConnections);
-					$this->position->getWorld()->setBlock($other->position, $other);
+					$world->setBlock($other->position, $other);
 
 					$changed = true;
 					$thisConnections[] = $thisSide;
@@ -202,7 +203,7 @@ abstract class BaseRail extends Flowable{
 
 		if($changed){
 			$this->setConnections($thisConnections);
-			$this->position->getWorld()->setBlock($this->position, $this);
+			$world->setBlock($this->position, $this);
 		}
 	}
 
@@ -220,12 +221,13 @@ abstract class BaseRail extends Flowable{
 	}
 
 	public function onNearbyBlockChange() : void{
+		$world = $this->position->getWorld();
 		if(!$this->getSide(Facing::DOWN)->getSupportType(Facing::UP)->hasEdgeSupport()){
-			$this->position->getWorld()->useBreakOn($this->position);
+			$world->useBreakOn($this->position);
 		}else{
 			foreach($this->getCurrentShapeConnections() as $connection){
 				if(($connection & RailConnectionInfo::FLAG_ASCEND) !== 0 && !$this->getSide($connection & ~RailConnectionInfo::FLAG_ASCEND)->getSupportType(Facing::UP)->hasEdgeSupport()){
-					$this->position->getWorld()->useBreakOn($this->position);
+					$world->useBreakOn($this->position);
 					break;
 				}
 			}

src/block/Bell.php

@@ -114,14 +114,13 @@ final class Bell extends Transparent{
 		return $this;
 	}
 
-	private function canBeSupportedBy(Block $block) : bool{
-		//TODO: this isn't the actual logic, but it's the closest approximation we can support for now
-		return $block->isSolid();
+	private function canBeSupportedBy(Block $block, int $face) : bool{
+		return !$block->getSupportType($face)->equals(SupportType::NONE());
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($face === Facing::UP){
-			if(!$this->canBeSupportedBy($tx->fetchBlock($this->position->down()))){
+			if(!$this->canBeSupportedBy($tx->fetchBlock($this->position->down()), Facing::UP)){
 				return false;
 			}
 			if($player !== null){
@@ -129,18 +128,18 @@ final class Bell extends Transparent{
 			}
 			$this->setAttachmentType(BellAttachmentType::FLOOR());
 		}elseif($face === Facing::DOWN){
-			if(!$this->canBeSupportedBy($tx->fetchBlock($this->position->up()))){
+			if(!$this->canBeSupportedBy($tx->fetchBlock($this->position->up()), Facing::DOWN)){
 				return false;
 			}
 			$this->setAttachmentType(BellAttachmentType::CEILING());
 		}else{
 			$this->setFacing($face);
-			if($this->canBeSupportedBy($tx->fetchBlock($this->position->getSide(Facing::opposite($face))))){
+			if($this->canBeSupportedBy($tx->fetchBlock($this->position->getSide(Facing::opposite($face))), $face)){
 				$this->setAttachmentType(BellAttachmentType::ONE_WALL());
 			}else{
 				return false;
 			}
-			if($this->canBeSupportedBy($tx->fetchBlock($this->position->getSide($face)))){
+			if($this->canBeSupportedBy($tx->fetchBlock($this->position->getSide($face)), Facing::opposite($face))){
 				$this->setAttachmentType(BellAttachmentType::TWO_WALLS());
 			}
 		}
@@ -149,10 +148,10 @@ final class Bell extends Transparent{
 
 	public function onNearbyBlockChange() : void{
 		if(
-			($this->attachmentType->equals(BellAttachmentType::CEILING()) && !$this->canBeSupportedBy($this->getSide(Facing::UP))) ||
-			($this->attachmentType->equals(BellAttachmentType::FLOOR()) && !$this->canBeSupportedBy($this->getSide(Facing::DOWN))) ||
-			($this->attachmentType->equals(BellAttachmentType::ONE_WALL()) && !$this->canBeSupportedBy($this->getSide(Facing::opposite($this->facing)))) ||
-			($this->attachmentType->equals(BellAttachmentType::TWO_WALLS()) && (!$this->canBeSupportedBy($this->getSide($this->facing)) || !$this->canBeSupportedBy($this->getSide(Facing::opposite($this->facing)))))
+			($this->attachmentType->equals(BellAttachmentType::CEILING()) && !$this->canBeSupportedBy($this->getSide(Facing::UP), Facing::DOWN)) ||
+			($this->attachmentType->equals(BellAttachmentType::FLOOR()) && !$this->canBeSupportedBy($this->getSide(Facing::DOWN), Facing::UP)) ||
+			($this->attachmentType->equals(BellAttachmentType::ONE_WALL()) && !$this->canBeSupportedBy($this->getSide(Facing::opposite($this->facing)), $this->facing)) ||
+			($this->attachmentType->equals(BellAttachmentType::TWO_WALLS()) && (!$this->canBeSupportedBy($this->getSide($this->facing), Facing::opposite($this->facing)) || !$this->canBeSupportedBy($this->getSide(Facing::opposite($this->facing)), $this->facing)))
 		){
 			$this->position->getWorld()->useBreakOn($this->position);
 		}
@@ -161,28 +160,28 @@ final class Bell extends Transparent{
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($player !== null){
 			$faceHit = Facing::opposite($player->getHorizontalFacing());
-			if($this->attachmentType->equals(BellAttachmentType::CEILING())){
-				$this->ring($faceHit);
-			}
-			if($this->attachmentType->equals(BellAttachmentType::FLOOR()) && Facing::axis($faceHit) === Facing::axis($this->facing)){
-				$this->ring($faceHit);
-			}
 			if(
-				($this->attachmentType->equals(BellAttachmentType::ONE_WALL()) || $this->attachmentType->equals(BellAttachmentType::TWO_WALLS())) &&
-				($faceHit === Facing::rotateY($this->facing, false) || $faceHit === Facing::rotateY($this->facing, true))
+				$this->attachmentType->equals(BellAttachmentType::CEILING()) ||
+				($this->attachmentType->equals(BellAttachmentType::FLOOR()) && Facing::axis($faceHit) === Facing::axis($this->facing)) ||
+				(
+					($this->attachmentType->equals(BellAttachmentType::ONE_WALL()) || $this->attachmentType->equals(BellAttachmentType::TWO_WALLS())) &&
+					($faceHit === Facing::rotateY($this->facing, false) || $faceHit === Facing::rotateY($this->facing, true))
+				)
 			){
 				$this->ring($faceHit);
+				return true;
 			}
 		}
 
-		return true;
+		return false;
 	}
 
 	public function ring(int $faceHit) : void{
-		$this->position->getWorld()->addSound($this->position, new BellRingSound());
-		$tile = $this->position->getWorld()->getTile($this->position);
+		$world = $this->position->getWorld();
+		$world->addSound($this->position, new BellRingSound());
+		$tile = $world->getTile($this->position);
 		if($tile instanceof TileBell){
-			$this->position->getWorld()->broadcastPacketToViewers($this->position, $tile->createFakeUpdatePacket($faceHit));
+			$world->broadcastPacketToViewers($this->position, $tile->createFakeUpdatePacket($faceHit));
 		}
 	}
 }

src/block/Block.php

@@ -62,7 +62,7 @@ class Block{
 	protected ?array $collisionBoxes = null;
 
 	/**
-	 * @param string          $name English name of the block type (TODO: implement translations)
+	 * @param string $name English name of the block type (TODO: implement translations)
 	 */
 	public function __construct(BlockIdentifier $idInfo, string $name, BlockBreakInfo $breakInfo){
 		if(($idInfo->getVariant() & $this->getStateBitmask()) !== 0){
@@ -78,25 +78,47 @@ class Block{
 		$this->position = clone $this->position;
 	}
 
+	/**
+	 * Returns an object containing information about how to identify and store this block type, such as its legacy
+	 * numeric ID(s), tile type (if any), and legacy variant metadata.
+	 */
 	public function getIdInfo() : BlockIdentifier{
 		return $this->idInfo;
 	}
 
+	/**
+	 * Returns the printable English name of the block.
+	 */
 	public function getName() : string{
 		return $this->fallbackName;
 	}
 
+	/**
+	 * @deprecated
+	 *
+	 * Returns the legacy numeric Minecraft block ID.
+	 */
 	public function getId() : int{
 		return $this->idInfo->getBlockId();
 	}
 
 	/**
 	 * @internal
+	 *
+	 * Returns the full blockstate ID of this block. This is a compact way of representing a blockstate used to store
+	 * blocks in chunks at runtime.
+	 *
+	 * This ID can be used to later obtain a copy of this block using {@link BlockFactory::get()}.
 	 */
 	public function getFullId() : int{
 		return ($this->getId() << self::INTERNAL_METADATA_BITS) | $this->getMeta();
 	}
 
+	/**
+	 * Returns the block as an item.
+	 * State information such as facing, powered/unpowered, open/closed, etc., is discarded.
+	 * Type information such as colour, wood type, etc. is preserved.
+	 */
 	public function asItem() : Item{
 		return ItemFactory::getInstance()->get(
 			$this->idInfo->getItemId(),
@@ -104,6 +126,12 @@ class Block{
 		);
 	}
 
+	/**
+	 * @deprecated
+	 *
+	 * Returns the legacy Minecraft block meta value. This is a mixed-purpose value, which is used to store different
+	 * things for different blocks.
+	 */
 	public function getMeta() : int{
 		$stateMeta = $this->writeStateToMeta();
 		assert(($stateMeta & ~$this->getStateBitmask()) === 0);
@@ -116,6 +144,7 @@ class Block{
 
 	/**
 	 * Returns a bitmask used to extract state bits from block metadata.
+	 * This is used to remove unwanted information from the legacy meta value when getting the block as an item.
 	 */
 	public function getStateBitmask() : int{
 		return 0;
@@ -143,11 +172,18 @@ class Block{
 		$this->collisionBoxes = null;
 	}
 
+	/**
+	 * Writes information about the block into the world. This writes the blockstate ID into the chunk, and creates
+	 * and/or removes tiles as necessary.
+	 *
+	 * Note: Do not call this directly. Pass the block to {@link World::setBlock()} instead.
+	 */
 	public function writeStateToWorld() : void{
-		$this->position->getWorld()->getOrLoadChunkAtPosition($this->position)->setFullBlock($this->position->x & Chunk::COORD_MASK, $this->position->y, $this->position->z & Chunk::COORD_MASK, $this->getFullId());
+		$world = $this->position->getWorld();
+		$world->getOrLoadChunkAtPosition($this->position)->setFullBlock($this->position->x & Chunk::COORD_MASK, $this->position->y, $this->position->z & Chunk::COORD_MASK, $this->getFullId());
 
 		$tileType = $this->idInfo->getTileClass();
-		$oldTile = $this->position->getWorld()->getTile($this->position);
+		$oldTile = $world->getTile($this->position);
 		if($oldTile !== null){
 			if($tileType === null || !($oldTile instanceof $tileType)){
 				$oldTile->close();
@@ -161,13 +197,13 @@ class Block{
 			 * @var Tile $tile
 			 * @see Tile::__construct()
 			 */
-			$tile = new $tileType($this->position->getWorld(), $this->position->asVector3());
-			$this->position->getWorld()->addTile($tile);
+			$tile = new $tileType($world, $this->position->asVector3());
+			$world->addTile($tile);
 		}
 	}
 
 	/**
-	 * Returns a type ID that identifies this type of block. This does not include information like facing, colour,
+	 * Returns a type ID that identifies this type of block. This does not include information like facing, open/closed,
 	 * powered/unpowered, etc.
 	 */
 	public function getTypeId() : int{
@@ -198,22 +234,44 @@ class Block{
 		return true;
 	}
 
+	/**
+	 * Returns whether this block can be replaced by another block placed in the same position.
+	 */
 	public function canBeReplaced() : bool{
 		return false;
 	}
 
+	/**
+	 * Returns whether this block can replace the given block in the given placement conditions.
+	 * This is used to allow slabs of the same type to combine into double slabs.
+	 */
 	public function canBePlacedAt(Block $blockReplace, Vector3 $clickVector, int $face, bool $isClickedBlock) : bool{
 		return $blockReplace->canBeReplaced();
 	}
 
 	/**
-	 * Places the Block, using block space and block target, and side. Returns if the block has been placed.
+	 * Generates a block transaction to set all blocks affected by placing this block. Usually this is just the block
+	 * itself, but may be multiple blocks in some cases (such as doors).
+	 *
+	 * @param BlockTransaction $tx           Blocks to be set should be added to this transaction (do not modify thr world directly)
+	 * @param Item             $item         Item used to place the block
+	 * @param Block            $blockReplace Block expected to be replaced
+	 * @param Block            $blockClicked Block that was clicked using the item
+	 * @param int              $face         Face of the clicked block which was clicked
+	 * @param Vector3          $clickVector  Exact position inside the clicked block where the click occurred, relative to the block's position
+	 * @param Player|null      $player       Player who placed the block, or null if it was not a player
+	 *
+	 * @return bool whether the placement should go ahead
 	 */
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$tx->addBlock($blockReplace->position, $this);
 		return true;
 	}
 
+	/**
+	 * Called immediately after the block has been placed in the world. Since placement uses a block transaction, some
+	 * things may not be possible until after the transaction has been executed.
+	 */
 	public function onPostPlace() : void{
 
 	}
@@ -229,10 +287,11 @@ class Block{
 	 * Do the actions needed so the block is broken with the Item
 	 */
 	public function onBreak(Item $item, ?Player $player = null) : bool{
-		if(($t = $this->position->getWorld()->getTile($this->position)) !== null){
+		$world = $this->position->getWorld();
+		if(($t = $world->getTile($this->position)) !== null){
 			$t->onBlockDestroyed();
 		}
-		$this->position->getWorld()->setBlock($this->position, VanillaBlocks::AIR());
+		$world->setBlock($this->position, VanillaBlocks::AIR());
 		return true;
 	}
 
@@ -252,7 +311,7 @@ class Block{
 
 	/**
 	 * Called when this block is randomly updated due to chunk ticking.
-	 * WARNING: This will not be called if ticksRandomly() does not return true!
+	 * WARNING: This will not be called if {@link Block::ticksRandomly()} does not return true!
 	 */
 	public function onRandomTick() : void{
 
@@ -273,8 +332,7 @@ class Block{
 	}
 
 	/**
-	 * Called when this block is attacked (left-clicked). This is called when a player left-clicks the block to try and
-	 * start to break it in survival mode.
+	 * Called when this block is attacked (left-clicked) by a player attempting to start breaking it in survival.
 	 *
 	 * @return bool if an action took place, prevents starting to break the block if true.
 	 */
@@ -282,11 +340,19 @@ class Block{
 		return false;
 	}
 
+	/**
+	 * Returns a multiplier applied to the velocity of entities moving on top of this block. A higher value will make
+	 * the block more slippery (like ice).
+	 *
+	 * @return float 0.0-1.0
+	 */
 	public function getFrictionFactor() : float{
 		return 0.6;
 	}
 
 	/**
+	 * Returns the amount of light emitted by this block.
+	 *
 	 * @return int 0-15
 	 */
 	public function getLightLevel() : int{
@@ -329,10 +395,6 @@ class Block{
 		return false;
 	}
 
-	public function hasEntityCollision() : bool{
-		return false;
-	}
-
 	/**
 	 * Returns whether entities can climb up this block.
 	 */
@@ -340,10 +402,6 @@ class Block{
 		return false;
 	}
 
-	public function addVelocityToEntity(Entity $entity) : ?Vector3{
-		return null;
-	}
-
 	final public function getPosition() : Position{
 		return $this->position;
 	}
@@ -426,6 +484,7 @@ class Block{
 
 	/**
 	 * Returns the item that players will equip when middle-clicking on this block.
+	 * If addUserData is true, additional data may be added, such as banner patterns, chest contents, etc.
 	 */
 	public function getPickedItem(bool $addUserData = false) : Item{
 		$item = $this->asItem();
@@ -549,7 +608,7 @@ class Block{
 	}
 
 	/**
-	 * Checks for collision against an AxisAlignedBB
+	 * Returns whether any of the block's collision boxes intersect with the given AxisAlignedBB.
 	 */
 	public function collidesWithBB(AxisAlignedBB $bb) : bool{
 		foreach($this->getCollisionBoxes() as $bb2){
@@ -561,10 +620,21 @@ class Block{
 		return false;
 	}
 
+	/**
+	 * Returns whether the block has actions to be executed when an entity enters its cell (full cube space).
+	 *
+	 * @see Block::onEntityInside()
+	 */
+	public function hasEntityCollision() : bool{
+		return false;
+	}
+
 	/**
 	 * Called when an entity's bounding box clips inside this block's cell. Note that the entity may not be intersecting
 	 * with the collision box or bounding box.
 	 *
+	 * WARNING: This will not be called if {@link Block::hasEntityCollision()} returns false.
+	 *
 	 * @return bool Whether the block is still the same after the intersection. If it changed (e.g. due to an explosive
 	 * being ignited), this should return false.
 	 */
@@ -572,6 +642,19 @@ class Block{
 		return true;
 	}
 
+	/**
+	 * Returns a direction vector describing which way an entity intersecting this block should be pushed.
+	 * This is used by liquids to push entities in liquid currents.
+	 *
+	 * The returned vector is summed with vectors from every other block the entity is intersecting, and normalized to
+	 * produce a final direction vector.
+	 *
+	 * WARNING: This will not be called if {@link Block::hasEntityCollision()} does not return true!
+	 */
+	public function addVelocityToEntity(Entity $entity) : ?Vector3{
+		return null;
+	}
+
 	/**
 	 * Called when an entity lands on this block (usually due to falling).
 	 * @return float|null The new vertical velocity of the entity, or null if unchanged.
@@ -581,6 +664,13 @@ class Block{
 	}
 
 	/**
+	 * Returns an array of collision bounding boxes for this block.
+	 * These are used for:
+	 * - entity movement collision checks (to ensure entities can't clip through blocks)
+	 * - projectile flight paths
+	 * - block placement (to ensure the player can't place blocks inside itself or another entity)
+	 * - anti-cheat checks in plugins
+	 *
 	 * @return AxisAlignedBB[]
 	 */
 	final public function getCollisionBoxes() : array{
@@ -611,6 +701,10 @@ class Block{
 		return [AxisAlignedBB::one()];
 	}
 
+	/**
+	 * Returns the type of support that the block can provide on the given face. This is used to determine whether
+	 * blocks placed on the given face can be supported by this block.
+	 */
 	public function getSupportType(int $facing) : SupportType{
 		return SupportType::FULL();
 	}
@@ -621,6 +715,10 @@ class Block{
 		return count($bb) === 1 && $bb[0]->getAverageEdgeLength() >= 1 && $bb[0]->isCube();
 	}
 
+	/**
+	 * Performs a ray trace along the line between the two positions using the block's collision boxes.
+	 * Returns the intersection point closest to pos1, or null if no intersection occurred.
+	 */
 	public function calculateIntercept(Vector3 $pos1, Vector3 $pos2) : ?RayTraceResult{
 		$bbs = $this->getCollisionBoxes();
 		if(count($bbs) === 0){

src/block/BlockFactory.php

@@ -968,7 +968,7 @@ class BlockFactory{
 	 * NOTE: If you are registering a new block type, you will need to add it to the creative inventory yourself - it
 	 * will not automatically appear there.
 	 *
-	 * @param bool  $override Whether to override existing registrations
+	 * @param bool $override Whether to override existing registrations
 	 *
 	 * @throws \RuntimeException if something attempted to override an already-registered block without specifying the
 	 * $override parameter.

src/block/BrewingStand.php

@@ -130,10 +130,11 @@ class BrewingStand extends Transparent{
 	}
 
 	public function onScheduledUpdate() : void{
-		$brewing = $this->position->getWorld()->getTile($this->position);
+		$world = $this->position->getWorld();
+		$brewing = $world->getTile($this->position);
 		if($brewing instanceof TileBrewingStand){
 			if($brewing->onUpdate()){
-				$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, 1);
+				$world->scheduleDelayedBlockUpdate($this->position, 1);
 			}
 
 			$changed = false;
@@ -146,7 +147,7 @@ class BrewingStand extends Transparent{
 			}
 
 			if($changed){
-				$this->position->getWorld()->setBlock($this->position, $this);
+				$world->setBlock($this->position, $this);
 			}
 		}
 	}

src/block/Button.php

@@ -61,7 +61,7 @@ abstract class Button extends Flowable{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($this->canBeSupportedBy($blockClicked, $face)){
+		if($this->canBeSupportedBy($blockReplace->getSide(Facing::opposite($face)), $face)){
 			$this->facing = $face;
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
@@ -73,9 +73,10 @@ abstract class Button extends Flowable{
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if(!$this->pressed){
 			$this->pressed = true;
-			$this->position->getWorld()->setBlock($this->position, $this);
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, $this->getActivationTime());
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOnSound());
+			$world = $this->position->getWorld();
+			$world->setBlock($this->position, $this);
+			$world->scheduleDelayedBlockUpdate($this->position, $this->getActivationTime());
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOnSound());
 		}
 
 		return true;
@@ -84,8 +85,9 @@ abstract class Button extends Flowable{
 	public function onScheduledUpdate() : void{
 		if($this->pressed){
 			$this->pressed = false;
-			$this->position->getWorld()->setBlock($this->position, $this);
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOffSound());
+			$world = $this->position->getWorld();
+			$world->setBlock($this->position, $this);
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOffSound());
 		}
 	}
 

src/block/Cactus.php

@@ -88,13 +88,14 @@ class Cactus extends Transparent{
 
 	public function onNearbyBlockChange() : void{
 		$down = $this->getSide(Facing::DOWN);
+		$world = $this->position->getWorld();
 		if($down->getId() !== BlockLegacyIds::SAND && !$down->isSameType($this)){
-			$this->position->getWorld()->useBreakOn($this->position);
+			$world->useBreakOn($this->position);
 		}else{
 			foreach(Facing::HORIZONTAL as $side){
 				$b = $this->getSide($side);
 				if($b->isSolid()){
-					$this->position->getWorld()->useBreakOn($this->position);
+					$world->useBreakOn($this->position);
 					break;
 				}
 			}
@@ -107,28 +108,29 @@ class Cactus extends Transparent{
 
 	public function onRandomTick() : void{
 		if(!$this->getSide(Facing::DOWN)->isSameType($this)){
+			$world = $this->position->getWorld();
 			if($this->age === self::MAX_AGE){
 				for($y = 1; $y < 3; ++$y){
-					if(!$this->position->getWorld()->isInWorld($this->position->x, $this->position->y + $y, $this->position->z)){
+					if(!$world->isInWorld($this->position->x, $this->position->y + $y, $this->position->z)){
 						break;
 					}
-					$b = $this->position->getWorld()->getBlockAt($this->position->x, $this->position->y + $y, $this->position->z);
+					$b = $world->getBlockAt($this->position->x, $this->position->y + $y, $this->position->z);
 					if($b->getId() === BlockLegacyIds::AIR){
 						$ev = new BlockGrowEvent($b, VanillaBlocks::CACTUS());
 						$ev->call();
 						if($ev->isCancelled()){
 							break;
 						}
-						$this->position->getWorld()->setBlock($b->position, $ev->getNewState());
+						$world->setBlock($b->position, $ev->getNewState());
 					}else{
 						break;
 					}
 				}
 				$this->age = 0;
-				$this->position->getWorld()->setBlock($this->position, $this);
+				$world->setBlock($this->position, $this);
 			}else{
 				++$this->age;
-				$this->position->getWorld()->setBlock($this->position, $this);
+				$world->setBlock($this->position, $this);
 			}
 		}
 	}

src/block/Chest.php

@@ -51,13 +51,13 @@ class Chest extends Transparent{
 	}
 
 	public function onPostPlace() : void{
-		$tile = $this->position->getWorld()->getTile($this->position);
+		$world = $this->position->getWorld();
+		$tile = $world->getTile($this->position);
 		if($tile instanceof TileChest){
 			foreach([false, true] as $clockwise){
 				$side = Facing::rotateY($this->facing, $clockwise);
 				$c = $this->getSide($side);
 				if($c instanceof Chest && $c->isSameType($this) && $c->facing === $this->facing){
-					$world = $this->position->getWorld();
 					$pair = $world->getTile($c->position);
 					if($pair instanceof TileChest && !$pair->isPaired()){
 						[$left, $right] = $clockwise ? [$c, $this] : [$this, $c];

src/block/CoralBlock.php

@@ -27,6 +27,7 @@ use pocketmine\block\utils\CoralType;
 use pocketmine\block\utils\CoralTypeTrait;
 use pocketmine\block\utils\InvalidBlockStateException;
 use pocketmine\data\bedrock\CoralTypeIdMap;
+use pocketmine\event\block\BlockDeathEvent;
 use pocketmine\item\Item;
 use function mt_rand;
 
@@ -77,7 +78,11 @@ final class CoralBlock extends Opaque{
 				}
 			}
 			if(!$hasWater){
-				$world->setBlock($this->position, $this->setDead(true));
+				$ev = new BlockDeathEvent($this, $this->setDead(true));
+				$ev->call();
+				if(!$ev->isCancelled()){
+					$world->setBlock($this->position, $ev->getNewState());
+				}
 			}
 		}
 	}

src/block/DaylightSensor.php

@@ -100,21 +100,23 @@ class DaylightSensor extends Transparent{
 	}
 
 	public function onScheduledUpdate() : void{
+		$world = $this->position->getWorld();
 		$signalStrength = $this->recalculateSignalStrength();
 		if($this->signalStrength !== $signalStrength){
 			$this->signalStrength = $signalStrength;
-			$this->position->getWorld()->setBlock($this->position, $this);
+			$world->setBlock($this->position, $this);
 		}
-		$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, 20);
+		$world->scheduleDelayedBlockUpdate($this->position, 20);
 	}
 
 	private function recalculateSignalStrength() : int{
-		$lightLevel = $this->position->getWorld()->getRealBlockSkyLightAt($this->position->x, $this->position->y, $this->position->z);
+		$world = $this->position->getWorld();
+		$lightLevel = $world->getRealBlockSkyLightAt($this->position->x, $this->position->y, $this->position->z);
 		if($this->inverted){
 			return 15 - $lightLevel;
 		}
 
-		$sunAngle = $this->position->getWorld()->getSunAnglePercentage();
+		$sunAngle = $world->getSunAnglePercentage();
 		return max(0, (int) round($lightLevel * cos(($sunAngle + ((($sunAngle < 0.5 ? 0 : 1) - $sunAngle) / 5)) * 2 * M_PI)));
 	}
 

src/block/DeadBush.php

@@ -34,7 +34,7 @@ use function mt_rand;
 class DeadBush extends Flowable{
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if(!$this->getSide(Facing::DOWN)->isTransparent()){
+		if($this->canBeSupportedBy($this->getSide(Facing::DOWN))){
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 
@@ -42,7 +42,7 @@ class DeadBush extends Flowable{
 	}
 
 	public function onNearbyBlockChange() : void{
-		if($this->getSide(Facing::DOWN)->isTransparent()){
+		if(!$this->canBeSupportedBy($this->getSide(Facing::DOWN))){
 			$this->position->getWorld()->useBreakOn($this->position);
 		}
 	}
@@ -64,4 +64,14 @@ class DeadBush extends Flowable{
 	public function getFlammability() : int{
 		return 100;
 	}
+
+	private function canBeSupportedBy(Block $block) : bool{
+		$blockId = $block->getId();
+		return $blockId === BlockLegacyIds::SAND
+			|| $blockId === BlockLegacyIds::PODZOL
+			|| $blockId === BlockLegacyIds::MYCELIUM
+			|| $blockId === BlockLegacyIds::DIRT
+			|| $blockId === BlockLegacyIds::HARDENED_CLAY
+			|| $blockId === BlockLegacyIds::STAINED_HARDENED_CLAY;
+	}
 }

src/block/Dirt.php

@@ -63,8 +63,9 @@ class Dirt extends Opaque{
 			$item->applyDamage(1);
 
 			$newBlock = $this->coarse ? VanillaBlocks::DIRT() : VanillaBlocks::FARMLAND();
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
-			$this->position->getWorld()->setBlock($this->position, $newBlock);
+			$world = $this->position->getWorld();
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
+			$world->setBlock($this->position, $newBlock);
 
 			return true;
 		}

src/block/Door.php

@@ -163,13 +163,14 @@ class Door extends Transparent{
 		$this->open = !$this->open;
 
 		$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
+		$world = $this->position->getWorld();
 		if($other instanceof Door && $other->isSameType($this)){
 			$other->open = $this->open;
-			$this->position->getWorld()->setBlock($other->position, $other);
+			$world->setBlock($other->position, $other);
 		}
 
-		$this->position->getWorld()->setBlock($this->position, $this);
-		$this->position->getWorld()->addSound($this->position, new DoorSound());
+		$world->setBlock($this->position, $this);
+		$world->addSound($this->position, new DoorSound());
 
 		return true;
 	}

src/block/DragonEgg.php

@@ -62,8 +62,9 @@ class DragonEgg extends Transparent implements Fallable{
 	}
 
 	public function teleport() : void{
+		$world = $this->position->getWorld();
 		for($tries = 0; $tries < 16; ++$tries){
-			$block = $this->position->getWorld()->getBlockAt(
+			$block = $world->getBlockAt(
 				$this->position->x + mt_rand(-16, 16),
 				max(World::Y_MIN, min(World::Y_MAX - 1, $this->position->y + mt_rand(-8, 8))),
 				$this->position->z + mt_rand(-16, 16)
@@ -76,9 +77,9 @@ class DragonEgg extends Transparent implements Fallable{
 				}
 
 				$blockPos = $ev->getTo();
-				$this->position->getWorld()->addParticle($this->position, new DragonEggTeleportParticle($this->position->x - $blockPos->x, $this->position->y - $blockPos->y, $this->position->z - $blockPos->z));
-				$this->position->getWorld()->setBlock($this->position, VanillaBlocks::AIR());
-				$this->position->getWorld()->setBlock($blockPos, $this);
+				$world->addParticle($this->position, new DragonEggTeleportParticle($this->position->x - $blockPos->x, $this->position->y - $blockPos->y, $this->position->z - $blockPos->z));
+				$world->setBlock($this->position, VanillaBlocks::AIR());
+				$world->setBlock($blockPos, $this);
 				break;
 			}
 		}

src/block/Farmland.php

@@ -78,16 +78,17 @@ class Farmland extends Transparent{
 	}
 
 	public function onRandomTick() : void{
+		$world = $this->position->getWorld();
 		if(!$this->canHydrate()){
 			if($this->wetness > 0){
 				$this->wetness--;
-				$this->position->getWorld()->setBlock($this->position, $this, false);
+				$world->setBlock($this->position, $this, false);
 			}else{
-				$this->position->getWorld()->setBlock($this->position, VanillaBlocks::DIRT());
+				$world->setBlock($this->position, VanillaBlocks::DIRT());
 			}
 		}elseif($this->wetness < self::MAX_WETNESS){
 			$this->wetness = self::MAX_WETNESS;
-			$this->position->getWorld()->setBlock($this->position, $this, false);
+			$world->setBlock($this->position, $this, false);
 		}
 	}
 

src/block/FenceGate.php

@@ -117,8 +117,9 @@ class FenceGate extends Transparent{
 			}
 		}
 
-		$this->position->getWorld()->setBlock($this->position, $this);
-		$this->position->getWorld()->addSound($this->position, new DoorSound());
+		$world = $this->position->getWorld();
+		$world->setBlock($this->position, $this);
+		$world->addSound($this->position, new DoorSound());
 		return true;
 	}
 

src/block/Fire.php

@@ -100,10 +100,11 @@ class Fire extends Flowable{
 	}
 
 	public function onNearbyBlockChange() : void{
+		$world = $this->position->getWorld();
 		if($this->getSide(Facing::DOWN)->isTransparent() && !$this->hasAdjacentFlammableBlocks()){
-			$this->position->getWorld()->setBlock($this->position, VanillaBlocks::AIR());
+			$world->setBlock($this->position, VanillaBlocks::AIR());
 		}else{
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, mt_rand(30, 40));
+			$world->scheduleDelayedBlockUpdate($this->position, mt_rand(30, 40));
 		}
 	}
 
@@ -136,11 +137,12 @@ class Fire extends Flowable{
 			}
 		}
 
+		$world = $this->position->getWorld();
 		if($result !== null){
-			$this->position->getWorld()->setBlock($this->position, $result);
+			$world->setBlock($this->position, $result);
 		}
 
-		$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, mt_rand(30, 40));
+		$world->scheduleDelayedBlockUpdate($this->position, mt_rand(30, 40));
 
 		if($canSpread){
 			$this->burnBlocksAround();
@@ -181,7 +183,8 @@ class Fire extends Flowable{
 			if(!$ev->isCancelled()){
 				$block->onIncinerate();
 
-				if($this->position->getWorld()->getBlock($block->getPosition())->isSameState($block)){
+				$world = $this->position->getWorld();
+				if($world->getBlock($block->getPosition())->isSameState($block)){
 					$spreadedFire = false;
 					if(mt_rand(0, $this->age + 9) < 5){ //TODO: check rain
 						$fire = clone $this;
@@ -189,7 +192,7 @@ class Fire extends Flowable{
 						$spreadedFire = $this->spreadBlock($block, $fire);
 					}
 					if(!$spreadedFire){
-						$this->position->getWorld()->setBlock($block->position, VanillaBlocks::AIR());
+						$world->setBlock($block->position, VanillaBlocks::AIR());
 					}
 				}
 			}

src/block/Flowable.php

@@ -26,6 +26,10 @@ namespace pocketmine\block;
 use pocketmine\block\utils\SupportType;
 use pocketmine\math\AxisAlignedBB;
 
+/**
+ * "Flowable" blocks are destroyed if water flows into the same space as the block. These blocks usually don't have any
+ * collision boxes, and can't provide support for other blocks.
+ */
 abstract class Flowable extends Transparent{
 
 	public function canBeFlowedInto() : bool{

src/block/FlowerPot.php

@@ -122,6 +122,7 @@ class FlowerPot extends Flowable{
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		$world = $this->position->getWorld();
 		$plant = $item->getBlock();
 		if($this->plant !== null){
 			if($this->isValidPlant($plant)){
@@ -137,16 +138,16 @@ class FlowerPot extends Flowable{
 				$removedItems = $player->getInventory()->addItem(...$removedItems);
 			}
 			foreach($removedItems as $drops){
-				$this->position->getWorld()->dropItem($this->position->add(0.5, 0.5, 0.5), $drops);
+				$world->dropItem($this->position->add(0.5, 0.5, 0.5), $drops);
 			}
 
 			$this->setPlant(null);
-			$this->position->getWorld()->setBlock($this->position, $this);
+			$world->setBlock($this->position, $this);
 			return true;
 		}elseif($this->isValidPlant($plant)){
 			$this->setPlant($plant);
 			$item->pop();
-			$this->position->getWorld()->setBlock($this->position, $this);
+			$world->setBlock($this->position, $this);
 
 			return true;
 		}

src/block/FrostedIce.php

@@ -56,16 +56,18 @@ class FrostedIce extends Ice{
 	}
 
 	public function onNearbyBlockChange() : void{
+		$world = $this->position->getWorld();
 		if(!$this->checkAdjacentBlocks(2)){
-			$this->position->getWorld()->useBreakOn($this->position);
+			$world->useBreakOn($this->position);
 		}else{
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
+			$world->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
 		}
 	}
 
 	public function onRandomTick() : void{
+		$world = $this->position->getWorld();
 		if((!$this->checkAdjacentBlocks(4) || mt_rand(0, 2) === 0) &&
-			$this->position->getWorld()->getHighestAdjacentFullLightAt($this->position->x, $this->position->y, $this->position->z) >= 12 - $this->age){
+			$world->getHighestAdjacentFullLightAt($this->position->x, $this->position->y, $this->position->z) >= 12 - $this->age){
 			if($this->tryMelt()){
 				foreach($this->getAllSides() as $block){
 					if($block instanceof FrostedIce){
@@ -74,7 +76,7 @@ class FrostedIce extends Ice{
 				}
 			}
 		}else{
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
+			$world->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
 		}
 	}
 
@@ -106,18 +108,19 @@ class FrostedIce extends Ice{
 	 * @return bool Whether the ice was destroyed.
 	 */
 	private function tryMelt() : bool{
+		$world = $this->position->getWorld();
 		if($this->age >= self::MAX_AGE){
 			$ev = new BlockMeltEvent($this, VanillaBlocks::WATER());
 			$ev->call();
 			if(!$ev->isCancelled()){
-				$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
+				$world->setBlock($this->position, $ev->getNewState());
 			}
 			return true;
 		}
 
 		$this->age++;
-		$this->position->getWorld()->setBlock($this->position, $this);
-		$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
+		$world->setBlock($this->position, $this);
+		$world->scheduleDelayedBlockUpdate($this->position, mt_rand(20, 40));
 		return false;
 	}
 }

src/block/Furnace.php

@@ -83,12 +83,13 @@ class Furnace extends Opaque{
 	}
 
 	public function onScheduledUpdate() : void{
-		$furnace = $this->position->getWorld()->getTile($this->position);
+		$world = $this->position->getWorld();
+		$furnace = $world->getTile($this->position);
 		if($furnace instanceof TileFurnace && $furnace->onUpdate()){
 			if(mt_rand(1, 60) === 1){ //in vanilla this is between 1 and 5 seconds; try to average about 3
-				$this->position->getWorld()->addSound($this->position, $furnace->getFurnaceType()->getCookSound());
+				$world->addSound($this->position, $furnace->getFurnaceType()->getCookSound());
 			}
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, 1); //TODO: check this
+			$world->scheduleDelayedBlockUpdate($this->position, 1); //TODO: check this
 		}
 	}
 }

src/block/Grass.php

@@ -53,13 +53,14 @@ class Grass extends Opaque{
 	}
 
 	public function onRandomTick() : void{
-		$lightAbove = $this->position->getWorld()->getFullLightAt($this->position->x, $this->position->y + 1, $this->position->z);
-		if($lightAbove < 4 && $this->position->getWorld()->getBlockAt($this->position->x, $this->position->y + 1, $this->position->z)->getLightFilter() >= 2){
+		$world = $this->position->getWorld();
+		$lightAbove = $world->getFullLightAt($this->position->x, $this->position->y + 1, $this->position->z);
+		if($lightAbove < 4 && $world->getBlockAt($this->position->x, $this->position->y + 1, $this->position->z)->getLightFilter() >= 2){
 			//grass dies
 			$ev = new BlockSpreadEvent($this, $this, VanillaBlocks::DIRT());
 			$ev->call();
 			if(!$ev->isCancelled()){
-				$this->position->getWorld()->setBlock($this->position, $ev->getNewState(), false);
+				$world->setBlock($this->position, $ev->getNewState(), false);
 			}
 		}elseif($lightAbove >= 9){
 			//try grass spread
@@ -68,12 +69,12 @@ class Grass extends Opaque{
 				$y = mt_rand($this->position->y - 3, $this->position->y + 1);
 				$z = mt_rand($this->position->z - 1, $this->position->z + 1);
 
-				$b = $this->position->getWorld()->getBlockAt($x, $y, $z);
+				$b = $world->getBlockAt($x, $y, $z);
 				if(
 					!($b instanceof Dirt) ||
 					$b->isCoarse() ||
-					$this->position->getWorld()->getFullLightAt($x, $y + 1, $z) < 4 ||
-					$this->position->getWorld()->getBlockAt($x, $y + 1, $z)->getLightFilter() >= 2
+					$world->getFullLightAt($x, $y + 1, $z) < 4 ||
+					$world->getBlockAt($x, $y + 1, $z)->getLightFilter() >= 2
 				){
 					continue;
 				}
@@ -81,7 +82,7 @@ class Grass extends Opaque{
 				$ev = new BlockSpreadEvent($b, $this, VanillaBlocks::GRASS());
 				$ev->call();
 				if(!$ev->isCancelled()){
-					$this->position->getWorld()->setBlock($b->position, $ev->getNewState(), false);
+					$world->setBlock($b->position, $ev->getNewState(), false);
 				}
 			}
 		}
@@ -91,23 +92,24 @@ class Grass extends Opaque{
 		if($face !== Facing::UP){
 			return false;
 		}
+		$world = $this->position->getWorld();
 		if($item instanceof Fertilizer){
 			$item->pop();
-			TallGrassObject::growGrass($this->position->getWorld(), $this->position, new Random(mt_rand()), 8, 2);
+			TallGrassObject::growGrass($world, $this->position, new Random(mt_rand()), 8, 2);
 
 			return true;
 		}elseif($item instanceof Hoe){
 			$item->applyDamage(1);
 			$newBlock = VanillaBlocks::FARMLAND();
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
-			$this->position->getWorld()->setBlock($this->position, $newBlock);
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
+			$world->setBlock($this->position, $newBlock);
 
 			return true;
 		}elseif($item instanceof Shovel && $this->getSide(Facing::UP)->getId() === BlockLegacyIds::AIR){
 			$item->applyDamage(1);
 			$newBlock = VanillaBlocks::GRASS_PATH();
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
-			$this->position->getWorld()->setBlock($this->position, $newBlock);
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
+			$world->setBlock($this->position, $newBlock);
 
 			return true;
 		}

src/block/Ice.php

@@ -51,11 +51,12 @@ class Ice extends Transparent{
 	}
 
 	public function onRandomTick() : void{
-		if($this->position->getWorld()->getHighestAdjacentBlockLight($this->position->x, $this->position->y, $this->position->z) >= 12){
+		$world = $this->position->getWorld();
+		if($world->getHighestAdjacentBlockLight($this->position->x, $this->position->y, $this->position->z) >= 12){
 			$ev = new BlockMeltEvent($this, VanillaBlocks::WATER());
 			$ev->call();
 			if(!$ev->isCancelled()){
-				$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
+				$world->setBlock($this->position, $ev->getNewState());
 			}
 		}
 	}

src/block/ItemFrame.php

@@ -31,6 +31,9 @@ use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\player\Player;
 use pocketmine\world\BlockTransaction;
+use pocketmine\world\sound\ItemFrameAddItemSound;
+use pocketmine\world\sound\ItemFrameRemoveItemSound;
+use pocketmine\world\sound\ItemFrameRotateItemSound;
 use function is_infinite;
 use function is_nan;
 use function lcg_value;
@@ -136,8 +139,12 @@ class ItemFrame extends Flowable{
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($this->framedItem !== null){
 			$this->itemRotation = ($this->itemRotation + 1) % self::ROTATIONS;
+
+			$this->position->getWorld()->addSound($this->position, new ItemFrameRotateItemSound());
 		}elseif(!$item->isNull()){
 			$this->framedItem = $item->pop();
+
+			$this->position->getWorld()->addSound($this->position, new ItemFrameAddItemSound());
 		}else{
 			return true;
 		}
@@ -151,11 +158,13 @@ class ItemFrame extends Flowable{
 		if($this->framedItem === null){
 			return false;
 		}
+		$world = $this->position->getWorld();
 		if(lcg_value() <= $this->itemDropChance){
-			$this->position->getWorld()->dropItem($this->position->add(0.5, 0.5, 0.5), clone $this->framedItem);
+			$world->dropItem($this->position->add(0.5, 0.5, 0.5), clone $this->framedItem);
+			$world->addSound($this->position, new ItemFrameRemoveItemSound());
 		}
 		$this->setFramedItem(null);
-		$this->position->getWorld()->setBlock($this->position, $this);
+		$world->setBlock($this->position, $this);
 		return true;
 	}
 
@@ -166,7 +175,7 @@ class ItemFrame extends Flowable{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($face === Facing::DOWN || $face === Facing::UP || !$blockClicked->isSolid()){
+		if($face === Facing::DOWN || $face === Facing::UP || !$blockReplace->getSide(Facing::opposite($face))->isSolid()){
 			return false;
 		}
 

src/block/Jukebox.php

@@ -26,6 +26,7 @@ namespace pocketmine\block;
 use pocketmine\block\tile\Jukebox as JukeboxTile;
 use pocketmine\item\Item;
 use pocketmine\item\Record;
+use pocketmine\lang\KnownTranslationKeys;
 use pocketmine\math\Vector3;
 use pocketmine\player\Player;
 use pocketmine\world\sound\RecordSound;
@@ -44,7 +45,7 @@ class Jukebox extends Opaque{
 			if($this->record !== null){
 				$this->ejectRecord();
 			}elseif($item instanceof Record){
-				$player->sendJukeboxPopup("record.nowPlaying", [$player->getLanguage()->translate($item->getRecordType()->getTranslatableName())]);
+				$player->sendJukeboxPopup(KnownTranslationKeys::RECORD_NOWPLAYING, [$player->getLanguage()->translate($item->getRecordType()->getTranslatableName())]);
 				$this->insertRecord($item->pop());
 			}
 		}

src/block/Ladder.php

@@ -70,7 +70,7 @@ class Ladder extends Transparent{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($this->canBeSupportedBy($blockClicked, $face) && Facing::axis($face) !== Axis::Y){
+		if($this->canBeSupportedBy($blockReplace->getSide(Facing::opposite($face)), $face) && Facing::axis($face) !== Axis::Y){
 			$this->facing = $face;
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}

src/block/Leaves.php

@@ -84,6 +84,7 @@ class Leaves extends Transparent{
 	/**
 	 * @param true[] $visited reference parameter
 	 * @phpstan-param array<int, true> $visited
+	 * @phpstan-param-out array<int, true> $visited
 	 */
 	protected function findLog(Vector3 $pos, array &$visited = [], int $distance = 0) : bool{
 		$index = World::blockHash($pos->x, $pos->y, $pos->z);
@@ -123,11 +124,12 @@ class Leaves extends Transparent{
 		if(!$this->noDecay && $this->checkDecay){
 			$ev = new LeavesDecayEvent($this);
 			$ev->call();
+			$world = $this->position->getWorld();
 			if($ev->isCancelled() || $this->findLog($this->position)){
 				$this->checkDecay = false;
-				$this->position->getWorld()->setBlock($this->position, $this, false);
+				$world->setBlock($this->position, $this, false);
 			}else{
-				$this->position->getWorld()->useBreakOn($this->position);
+				$world->useBreakOn($this->position);
 			}
 		}
 	}

src/block/Lectern.php

@@ -128,8 +128,9 @@ class Lectern extends Transparent{
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($this->book === null && $item instanceof WritableBookBase){
-			$this->position->getWorld()->setBlock($this->position, $this->setBook($item));
-			$this->position->getWorld()->addSound($this->position, new LecternPlaceBookSound());
+			$world = $this->position->getWorld();
+			$world->setBlock($this->position, $this->setBook($item));
+			$world->addSound($this->position, new LecternPlaceBookSound());
 			$item->pop();
 		}
 		return true;
@@ -137,8 +138,9 @@ class Lectern extends Transparent{
 
 	public function onAttack(Item $item, int $face, ?Player $player = null) : bool{
 		if($this->book !== null){
-			$this->position->getWorld()->dropItem($this->position->up(), $this->book);
-			$this->position->getWorld()->setBlock($this->position, $this->setBook(null));
+			$world = $this->position->getWorld();
+			$world->dropItem($this->position->up(), $this->book);
+			$world->setBlock($this->position, $this->setBook(null));
 		}
 		return false;
 	}
@@ -152,12 +154,13 @@ class Lectern extends Transparent{
 		}
 
 		$this->viewedPage = $newPage;
+		$world = $this->position->getWorld();
 		if(!$this->producingSignal){
 			$this->producingSignal = true;
-			$this->position->getWorld()->scheduleDelayedBlockUpdate($this->position, 1);
+			$world->scheduleDelayedBlockUpdate($this->position, 1);
 		}
 
-		$this->position->getWorld()->setBlock($this->position, $this);
+		$world->setBlock($this->position, $this);
 
 		return true;
 	}

src/block/Lever.php

@@ -95,7 +95,7 @@ class Lever extends Flowable{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if(!$this->canBeSupportedBy($blockClicked, $face)){
+		if(!$this->canBeSupportedBy($blockReplace->getSide(Facing::opposite($face)), $face)){
 			return false;
 		}
 
@@ -127,8 +127,9 @@ class Lever extends Flowable{
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->activated = !$this->activated;
-		$this->position->getWorld()->setBlock($this->position, $this);
-		$this->position->getWorld()->addSound(
+		$world = $this->position->getWorld();
+		$world->setBlock($this->position, $this);
+		$world->addSound(
 			$this->position->add(0.5, 0.5, 0.5),
 			$this->activated ? new RedstonePowerOnSound() : new RedstonePowerOffSound()
 		);

src/block/Liquid.php

@@ -329,7 +329,7 @@ abstract class Liquid extends Transparent{
 			}
 
 			if($adjacentDecay <= self::MAX_DECAY){
-				$calculator = new MinimumCostFlowCalculator($this->position->getWorld(), $this->getFlowDecayPerBlock(), \Closure::fromCallable([$this, 'canFlowInto']));
+				$calculator = new MinimumCostFlowCalculator($world, $this->getFlowDecayPerBlock(), \Closure::fromCallable([$this, 'canFlowInto']));
 				foreach($calculator->getOptimalFlowDirections($this->position->getFloorX(), $this->position->getFloorY(), $this->position->getFloorZ()) as $facing){
 					$this->flowIntoBlock($world->getBlock($this->position->getSide($facing)), $adjacentDecay, false);
 				}
@@ -348,11 +348,12 @@ abstract class Liquid extends Transparent{
 			$ev = new BlockSpreadEvent($block, $this, $new);
 			$ev->call();
 			if(!$ev->isCancelled()){
+				$world = $this->position->getWorld();
 				if($block->getId() !== BlockLegacyIds::AIR){
-					$this->position->getWorld()->useBreakOn($block->position);
+					$world->useBreakOn($block->position);
 				}
 
-				$this->position->getWorld()->setBlock($block->position, $ev->getNewState());
+				$world->setBlock($block->position, $ev->getNewState());
 			}
 		}
 	}
@@ -382,8 +383,9 @@ abstract class Liquid extends Transparent{
 		$ev = new BlockFormEvent($this, $result);
 		$ev->call();
 		if(!$ev->isCancelled()){
-			$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
-			$this->position->getWorld()->addSound($this->position->add(0.5, 0.5, 0.5), new FizzSound(2.6 + (lcg_value() - lcg_value()) * 0.8));
+			$world = $this->position->getWorld();
+			$world->setBlock($this->position, $ev->getNewState());
+			$world->addSound($this->position->add(0.5, 0.5, 0.5), new FizzSound(2.6 + (lcg_value() - lcg_value()) * 0.8));
 		}
 		return true;
 	}

src/block/Melon.php

@@ -27,7 +27,7 @@ use pocketmine\item\Item;
 use pocketmine\item\VanillaItems;
 use function mt_rand;
 
-class Melon extends Transparent{
+class Melon extends Opaque{
 
 	public function getDropsForCompatibleTool(Item $item) : array{
 		return [

src/block/Mycelium.php

@@ -49,13 +49,14 @@ class Mycelium extends Opaque{
 		$x = mt_rand($this->position->x - 1, $this->position->x + 1);
 		$y = mt_rand($this->position->y - 2, $this->position->y + 2);
 		$z = mt_rand($this->position->z - 1, $this->position->z + 1);
-		$block = $this->position->getWorld()->getBlockAt($x, $y, $z);
+		$world = $this->position->getWorld();
+		$block = $world->getBlockAt($x, $y, $z);
 		if($block instanceof Dirt && !$block->isCoarse()){
 			if($block->getSide(Facing::UP) instanceof Transparent){
 				$ev = new BlockSpreadEvent($block, $this, VanillaBlocks::MYCELIUM());
 				$ev->call();
 				if(!$ev->isCancelled()){
-					$this->position->getWorld()->setBlock($block->position, $ev->getNewState());
+					$world->setBlock($block->position, $ev->getNewState());
 				}
 			}
 		}

src/block/Opaque.php

@@ -23,6 +23,10 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
+/**
+ * Opaque blocks do not allow light to pass through. They are usually collidable full-cube blocks.
+ * Most blocks in Minecraft fall into this category.
+ */
 class Opaque extends Block{
 
 	public function isSolid() : bool{

src/block/PressurePlate.php

@@ -45,7 +45,7 @@ abstract class PressurePlate extends Transparent{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($this->canBeSupportedBy($blockClicked)){
+		if($this->canBeSupportedBy($blockReplace->getSide(Facing::DOWN))){
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 		return false;
@@ -55,5 +55,11 @@ abstract class PressurePlate extends Transparent{
 		return !$block->getSupportType(Facing::UP)->equals(SupportType::NONE());
 	}
 
+	public function onNearbyBlockChange() : void{
+		if(!$this->canBeSupportedBy($this->getSide(Facing::DOWN))){
+			$this->position->getWorld()->useBreakOn($this->position);
+		}
+	}
+
 	//TODO
 }

src/block/Pumpkin.php

@@ -36,8 +36,9 @@ class Pumpkin extends Opaque{
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($item instanceof Shears && in_array($face, Facing::HORIZONTAL, true)){
 			$item->applyDamage(1);
-			$this->position->getWorld()->setBlock($this->position, VanillaBlocks::CARVED_PUMPKIN()->setFacing($face));
-			$this->position->getWorld()->dropItem($this->position->add(0.5, 0.5, 0.5), VanillaItems::PUMPKIN_SEEDS()->setCount(1));
+			$world = $this->position->getWorld();
+			$world->setBlock($this->position, VanillaBlocks::CARVED_PUMPKIN()->setFacing($face));
+			$world->dropItem($this->position->add(0.5, 0.5, 0.5), VanillaItems::PUMPKIN_SEEDS()->setCount(1));
 			return true;
 		}
 		return false;

src/block/RedMushroom.php

@@ -43,7 +43,11 @@ class RedMushroom extends Flowable{
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$down = $this->getSide(Facing::DOWN);
-		if(!$down->isTransparent()){
+		$position = $this->getPosition();
+		$lightLevel = $position->getWorld()->getFullLightAt($position->x, $position->y, $position->z);
+		$downId = $down->getId();
+		//TODO: nylium support
+		if(($lightLevel <= 12 && !$down->isTransparent()) || $downId === BlockLegacyIds::MYCELIUM || $downId === BlockLegacyIds::PODZOL){
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}
 

src/block/Sapling.php

@@ -96,12 +96,13 @@ class Sapling extends Flowable{
 	}
 
 	public function onRandomTick() : void{
-		if($this->position->getWorld()->getFullLightAt($this->position->getFloorX(), $this->position->getFloorY(), $this->position->getFloorZ()) >= 8 && mt_rand(1, 7) === 1){
+		$world = $this->position->getWorld();
+		if($world->getFullLightAt($this->position->getFloorX(), $this->position->getFloorY(), $this->position->getFloorZ()) >= 8 && mt_rand(1, 7) === 1){
 			if($this->ready){
 				$this->grow(null);
 			}else{
 				$this->ready = true;
-				$this->position->getWorld()->setBlock($this->position, $this);
+				$world->setBlock($this->position, $this);
 			}
 		}
 	}

src/block/SnowLayer.php

@@ -111,11 +111,12 @@ class SnowLayer extends Flowable implements Fallable{
 	}
 
 	public function onRandomTick() : void{
-		if($this->position->getWorld()->getBlockLightAt($this->position->x, $this->position->y, $this->position->z) >= 12){
+		$world = $this->position->getWorld();
+		if($world->getBlockLightAt($this->position->x, $this->position->y, $this->position->z) >= 12){
 			$ev = new BlockMeltEvent($this, VanillaBlocks::AIR());
 			$ev->call();
 			if(!$ev->isCancelled()){
-				$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
+				$world->setBlock($this->position, $ev->getNewState());
 			}
 		}
 	}

src/block/Stem.php

@@ -35,13 +35,14 @@ abstract class Stem extends Crops{
 
 	public function onRandomTick() : void{
 		if(mt_rand(0, 2) === 1){
+			$world = $this->position->getWorld();
 			if($this->age < self::MAX_AGE){
 				$block = clone $this;
 				++$block->age;
 				$ev = new BlockGrowEvent($this, $block);
 				$ev->call();
 				if(!$ev->isCancelled()){
-					$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
+					$world->setBlock($this->position, $ev->getNewState());
 				}
 			}else{
 				$grow = $this->getPlant();
@@ -57,7 +58,7 @@ abstract class Stem extends Crops{
 					$ev = new BlockGrowEvent($side, $grow);
 					$ev->call();
 					if(!$ev->isCancelled()){
-						$this->position->getWorld()->setBlock($side->position, $ev->getNewState());
+						$world->setBlock($side->position, $ev->getNewState());
 					}
 				}
 			}

src/block/Sugarcane.php

@@ -31,6 +31,7 @@ use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\player\Player;
 use pocketmine\world\BlockTransaction;
+use pocketmine\world\Position;
 
 class Sugarcane extends Flowable{
 	public const MAX_AGE = 15;
@@ -49,27 +50,37 @@ class Sugarcane extends Flowable{
 		return 0b1111;
 	}
 
-	private function grow() : bool{
+	private function seekToBottom() : Position{
+		$world = $this->position->getWorld();
+		$bottom = $this->position;
+		while(($next = $world->getBlock($bottom->down()))->isSameType($this)){
+			$bottom = $next->position;
+		}
+		return $bottom;
+	}
+
+	private function grow(Position $pos) : bool{
 		$grew = false;
+		$world = $pos->getWorld();
 		for($y = 1; $y < 3; ++$y){
-			if(!$this->position->getWorld()->isInWorld($this->position->x, $this->position->y + $y, $this->position->z)){
+			if(!$world->isInWorld($pos->x, $pos->y + $y, $pos->z)){
 				break;
 			}
-			$b = $this->position->getWorld()->getBlockAt($this->position->x, $this->position->y + $y, $this->position->z);
+			$b = $world->getBlockAt($pos->x, $pos->y + $y, $pos->z);
 			if($b->getId() === BlockLegacyIds::AIR){
 				$ev = new BlockGrowEvent($b, VanillaBlocks::SUGARCANE());
 				$ev->call();
 				if($ev->isCancelled()){
 					break;
 				}
-				$this->position->getWorld()->setBlock($b->position, $ev->getNewState());
+				$world->setBlock($b->position, $ev->getNewState());
 				$grew = true;
-			}else{
+			}elseif(!$b->isSameType($this)){
 				break;
 			}
 		}
 		$this->age = 0;
-		$this->position->getWorld()->setBlock($this->position, $this);
+		$world->setBlock($pos, $this);
 		return $grew;
 	}
 
@@ -86,7 +97,7 @@ class Sugarcane extends Flowable{
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($item instanceof Fertilizer){
-			if(!$this->getSide(Facing::DOWN)->isSameType($this) && $this->grow()){
+			if($this->grow($this->seekToBottom())){
 				$item->pop();
 			}
 
@@ -110,7 +121,7 @@ class Sugarcane extends Flowable{
 	public function onRandomTick() : void{
 		if(!$this->getSide(Facing::DOWN)->isSameType($this)){
 			if($this->age === self::MAX_AGE){
-				$this->grow();
+				$this->grow($this->position);
 			}else{
 				++$this->age;
 				$this->position->getWorld()->setBlock($this->position, $this);

src/block/SweetBerryBush.php

@@ -90,6 +90,7 @@ class SweetBerryBush extends Flowable{
 	}
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		$world = $this->position->getWorld();
 		if($this->age < self::STAGE_MATURE && $item instanceof Fertilizer){
 			$block = clone $this;
 			$block->age++;
@@ -98,13 +99,13 @@ class SweetBerryBush extends Flowable{
 			$ev->call();
 
 			if(!$ev->isCancelled()){
-				$this->position->getWorld()->setBlock($this->position, $ev->getNewState());
+				$world->setBlock($this->position, $ev->getNewState());
 				$item->pop();
 			}
 
 		}elseif(($dropAmount = $this->getBerryDropAmount()) > 0){
-			$this->position->getWorld()->setBlock($this->position, $this->setAge(self::STAGE_BUSH_NO_BERRIES));
-			$this->position->getWorld()->dropItem($this->position, $this->asItem()->setCount($dropAmount));
+			$world->setBlock($this->position, $this->setAge(self::STAGE_BUSH_NO_BERRIES));
+			$world->dropItem($this->position, $this->asItem()->setCount($dropAmount));
 		}
 
 		return true;

src/block/TNT.php

@@ -110,11 +110,12 @@ class TNT extends Opaque{
 	}
 
 	public function ignite(int $fuse = 80) : void{
-		$this->position->getWorld()->setBlock($this->position, VanillaBlocks::AIR());
+		$world = $this->position->getWorld();
+		$world->setBlock($this->position, VanillaBlocks::AIR());
 
 		$mot = (new Random())->nextSignedFloat() * M_PI * 2;
 
-		$tnt = new PrimedTNT(Location::fromObject($this->position->add(0.5, 0, 0.5), $this->position->getWorld()));
+		$tnt = new PrimedTNT(Location::fromObject($this->position->add(0.5, 0, 0.5), $world));
 		$tnt->setFuse($fuse);
 		$tnt->setWorksUnderwater($this->worksUnderwater);
 		$tnt->setMotion(new Vector3(-sin($mot) * 0.02, 0.2, -cos($mot) * 0.02));

src/block/Thin.php

@@ -29,6 +29,9 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use function count;
 
+/**
+ * Thin blocks behave like glass panes. They connect to full-cube blocks horizontally adjacent to them if possible.
+ */
 class Thin extends Transparent{
 	/** @var bool[] facing => dummy */
 	protected array $connections = [];
@@ -38,7 +41,7 @@ class Thin extends Transparent{
 
 		foreach(Facing::HORIZONTAL as $facing){
 			$side = $this->getSide($facing);
-			if($side instanceof Thin || $side->isFullCube()){
+			if($side instanceof Thin || $side instanceof Wall || $side->isFullCube()){
 				$this->connections[$facing] = true;
 			}else{
 				unset($this->connections[$facing]);

src/block/Torch.php

@@ -65,7 +65,6 @@ class Torch extends Flowable{
 	}
 
 	public function onNearbyBlockChange() : void{
-		$below = $this->getSide(Facing::DOWN);
 		$face = Facing::opposite($this->facing);
 
 		if(!$this->canBeSupportedBy($this->getSide($face), $this->facing)){
@@ -74,10 +73,7 @@ class Torch extends Flowable{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($blockClicked->canBeReplaced() && $this->canBeSupportedBy($blockClicked->getSide(Facing::DOWN), Facing::UP)){
-			$this->facing = Facing::UP;
-			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
-		}elseif($face !== Facing::DOWN && $this->canBeSupportedBy($blockClicked, $face)){
+		if($face !== Facing::DOWN && $this->canBeSupportedBy($blockReplace->getSide(Facing::opposite($face)), $face)){
 			$this->facing = $face;
 			return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 		}else{

src/block/Transparent.php

@@ -23,6 +23,12 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
+/**
+ * Transparent blocks do not block any light from propagating through them.
+ *
+ * Note: This does **not** imply that the block is **visually** transparent. For example, chests allow light to pass
+ * through, but the player cannot see through them except at the edges.
+ */
 class Transparent extends Block{
 
 	public function isTransparent() : bool{

src/block/Trapdoor.php

@@ -96,8 +96,9 @@ class Trapdoor extends Transparent{
 
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$this->open = !$this->open;
-		$this->position->getWorld()->setBlock($this->position, $this);
-		$this->position->getWorld()->addSound($this->position, new DoorSound());
+		$world = $this->position->getWorld();
+		$world->setBlock($this->position, $this);
+		$world->addSound($this->position, new DoorSound());
 		return true;
 	}
 }

src/block/UnknownBlock.php

@@ -25,6 +25,9 @@ namespace pocketmine\block;
 
 use pocketmine\item\Item;
 
+/**
+ * Represents a block which is unrecognized or not implemented.
+ */
 class UnknownBlock extends Transparent{
 
 	public function __construct(BlockIdentifier $idInfo, BlockBreakInfo $breakInfo){

src/block/Vine.php

@@ -116,7 +116,7 @@ class Vine extends Flowable{
 	}
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if(!$blockClicked->isFullCube() || Facing::axis($face) === Axis::Y){
+		if(!$blockReplace->getSide(Facing::opposite($face))->isFullCube() || Facing::axis($face) === Axis::Y){
 			return false;
 		}
 
@@ -141,10 +141,11 @@ class Vine extends Flowable{
 		}
 
 		if($changed){
+			$world = $this->position->getWorld();
 			if(count($this->faces) === 0){
-				$this->position->getWorld()->useBreakOn($this->position);
+				$world->useBreakOn($this->position);
 			}else{
-				$this->position->getWorld()->setBlock($this->position, $this);
+				$world->setBlock($this->position, $this);
 			}
 		}
 	}

src/block/Wall.php

@@ -39,7 +39,7 @@ class Wall extends Transparent{
 
 		foreach(Facing::HORIZONTAL as $facing){
 			$block = $this->getSide($facing);
-			if($block instanceof static || $block instanceof FenceGate || ($block->isSolid() && !$block->isTransparent())){
+			if($block instanceof static || $block instanceof FenceGate || $block instanceof Thin || ($block->isSolid() && !$block->isTransparent())){
 				$this->connections[$facing] = $facing;
 			}else{
 				unset($this->connections[$facing]);

src/block/WallCoralFan.php

@@ -113,7 +113,7 @@ final class WallCoralFan extends BaseCoral{
 
 	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		$axis = Facing::axis($face);
-		if(($axis !== Axis::X && $axis !== Axis::Z) || !$this->canBeSupportedBy($blockClicked, $face)){
+		if(($axis !== Axis::X && $axis !== Axis::Z) || !$this->canBeSupportedBy($blockReplace->getSide(Facing::opposite($face)), $face)){
 			return false;
 		}
 		$this->facing = $face;

src/block/WaterLily.php

@@ -39,19 +39,23 @@ class WaterLily extends Flowable{
 		return [AxisAlignedBB::one()->contract(1 / 16, 0, 1 / 16)->trim(Facing::UP, 63 / 64)];
 	}
 
-	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
-		if($blockClicked instanceof Water){
-			$up = $blockClicked->getSide(Facing::UP);
-			if($up->canBeReplaced()){
-				return parent::place($tx, $item, $up, $blockClicked, $face, $clickVector, $player);
-			}
-		}
+	public function canBePlacedAt(Block $blockReplace, Vector3 $clickVector, int $face, bool $isClickedBlock) : bool{
+		return !$blockReplace instanceof Water && parent::canBePlacedAt($blockReplace, $clickVector, $face, $isClickedBlock);
+	}
 
-		return false;
+	private function canBeSupportedBy(Block $block) : bool{
+		return $block instanceof Water;
+	}
+
+	public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+		if(!$this->canBeSupportedBy($blockReplace->getSide(Facing::DOWN))){
+			return false;
+		}
+		return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
 	}
 
 	public function onNearbyBlockChange() : void{
-		if(!($this->getSide(Facing::DOWN) instanceof Water)){
+		if(!$this->canBeSupportedBy($this->getSide(Facing::DOWN))){
 			$this->position->getWorld()->useBreakOn($this->position);
 		}
 	}

src/block/inventory/BarrelInventory.php

@@ -48,9 +48,10 @@ class BarrelInventory extends SimpleInventory implements BlockInventory{
 
 	protected function animateBlock(bool $isOpen) : void{
 		$holder = $this->getHolder();
-		$block = $holder->getWorld()->getBlock($holder);
+		$world = $holder->getWorld();
+		$block = $world->getBlock($holder);
 		if($block instanceof Barrel){
-			$holder->getWorld()->setBlock($holder, $block->setOpen($isOpen));
+			$world->setBlock($holder, $block->setOpen($isOpen));
 		}
 	}
 }

src/block/tile/Banner.php

@@ -135,7 +135,7 @@ class Banner extends Spawnable{
 	}
 
 	/**
-	 * @param BannerPatternLayer[]             $patterns
+	 * @param BannerPatternLayer[] $patterns
 	 *
 	 * @phpstan-param list<BannerPatternLayer> $patterns
 	 */

src/block/tile/ContainerTrait.php

@@ -52,7 +52,7 @@ trait ContainerTrait{
 			$newContents = [];
 			/** @var CompoundTag $itemNBT */
 			foreach($inventoryTag as $itemNBT){
-				$newContents[$itemNBT->getByte("Slot")] = Item::nbtDeserialize($itemNBT);
+				$newContents[$itemNBT->getByte(Item::TAG_SLOT)] = Item::nbtDeserialize($itemNBT);
 			}
 			$inventory->setContents($newContents);
 
@@ -96,8 +96,10 @@ trait ContainerTrait{
 		$inv = $this->getRealInventory();
 		$pos = $this->getPosition();
 
+		$world = $pos->getWorld();
+		$dropPos = $pos->add(0.5, 0.5, 0.5);
 		foreach($inv->getContents() as $k => $item){
-			$pos->getWorld()->dropItem($pos->add(0.5, 0.5, 0.5), $item);
+			$world->dropItem($dropPos, $item);
 		}
 		$inv->clearAll();
 	}