Disable requirements processor

- Also decrease allocated via gradle.properties
- Forces rebuild with new PE which will fix Geyser detection

.deepsource.toml

@@ -5,4 +5,4 @@ name = "java"
 enabled = true
 
   [analyzers.meta]
-  runtime_version = "16"
+  runtime_version = "17"

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 100
+tab_width = 4
+
+# intellij specific configuration
+ij_continuation_indent_size = 8
+ij_formatter_off_tag = @formatter:off
+ij_formatter_on_tag = @formatter:on
+ij_formatter_tags_enabled = false
+ij_smart_tabs = false
+ij_wrap_on_typing = false

.github/workflows/gradle-publish.yml

@@ -20,19 +20,51 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
         server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
         settings-path: ${{ github.workspace }} # location for the settings.xml file
 
+
+    # Temporary tasks so built jar works because PacketEvents won't merge my fixes for their broken fabric support
+    - name: Clone Axionize's PacketEvents Repository
+      run: |
+          git clone -b fix/fabric-events https://github.com/Axionize/packetevents.git packetevents
+          cd packetevents
+          echo "Cloned PacketEvents repository"
+
+    - name: Build and Publish PacketEvents to Maven Local
+      uses: gradle/actions/setup-gradle@v3
+      with:
+          build-root-directory: packetevents
+          arguments: publishToMavenLocal
+
+    - name: Extract Version from build.gradle.kts
+      id: extract-version
+      run: |
+          # Extract the version from build.gradle.kts using grep and sed
+          VERSION=$(grep "^version\s*=" build.gradle.kts | sed 's/version\s*=\s*"\(.*\)"/\1/')
+          echo "VERSION: $VERSION"
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
     - name: Build with Gradle
       uses: gradle/actions/setup-gradle@v3
       with:
         arguments: build
-    - name: Upload a Build Artifact
+
+    - name: Upload Bukkit Artifact
       uses: actions/upload-artifact@v4
       with:
-        path: /home/runner/work/Grim/Grim/build/libs/**.jar
+          name: grimac-bukkit
+          path: ${{ github.workspace }}/bukkit/build/libs/grimac-bukkit-${{ env.VERSION }}.jar
+
+    - name: Upload Fabric Artifact
+      uses: actions/upload-artifact@v4
+      with:
+          name: grimac-fabric
+          path: ${{ github.workspace }}/fabric/build/libs/grimac-fabric-${{ env.VERSION }}.jar
+

.gitignore

@@ -65,4 +65,10 @@ nb-configuration.xml
 ##############################
 ## OS X
 ##############################
-.DS_Store
+.DS_Store
+
+##############################
+## Fabric
+##############################
+run/
+fabric/run/

README.md

@@ -41,8 +41,8 @@ What makes Grim stand out against other anticheats?
 ### Movement Simulation Engine
 
 * We have a 1:1 replication of the player's possible movements
-* This covers everything from basic walking, swimming, knockback, cobwebs, to bubble columns
-* It even covers riding entities from boats to pigs to striders
+    * This covers everything from basic walking, swimming, knockback, cobwebs, to bubble columns
+    * It even covers riding entities from boats to pigs to striders
 * Built upon covering edge cases to confirm accuracy
 * 1.13+ clients on 1.13+ servers, 1.12- clients on 1.13+ servers, 1.13+ clients on 1.12- servers, and 1.12- clients on 1.12- servers are all supported regardless of the large technical changes between these versions.
 * The order of collisions depends on the client version and is correct

build.gradle.kts

@@ -1,206 +1,18 @@
-import net.minecrell.pluginyml.bukkit.BukkitPluginDescription.Permission
-
-plugins {
-    id("java")
-    id("maven-publish")
-    id("com.github.johnrengelman.shadow") version "8.1.1"
-    id("io.freefair.lombok") version "8.6"
-    id("net.minecrell.plugin-yml.bukkit") version "0.6.0"
-    id("com.diffplug.spotless") version "6.25.0"
-}
-
-spotless {
-    java {
-        endWithNewline()
-        indentWithSpaces(4)
-        removeUnusedImports()
-        trimTrailingWhitespace()
-        targetExclude("build/generated/**/*")
-    }
-
-    kotlinGradle {
-        endWithNewline()
-        indentWithSpaces(4)
-        trimTrailingWhitespace()
-    }
-}
-
 group = "ac.grim.grimac"
-version = "2.3.69"
+version = "2.3.71"
 description = "Libre simulation anticheat designed for 1.21 with 1.8-1.21 support, powered by PacketEvents 2.0."
 
-java {
-    toolchain.languageVersion.set(JavaLanguageVersion.of(17))
-}
-
 // Set to false for debug builds
 // You cannot live reload classes if the jar relocates dependencies
 // Checks Project properties -> environment variable -> defaults true
-val relocate: Boolean = project.findProperty("relocate")?.toString()?.toBoolean()
+extra["relocate"] = project.findProperty("relocate")?.toString()?.toBoolean()
     ?: System.getenv("RELOCATE_JAR")?.toBoolean()
-    ?: true
+            ?: true
 
-repositories {
-    mavenLocal()
-    maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/") // Spigot
-    maven("https://jitpack.io/") { // Grim API
-        content {
-            includeGroup("com.github.grimanticheat")
-        }
-    }
-    maven("https://repo.viaversion.com") // ViaVersion
-    maven("https://repo.aikar.co/content/groups/aikar/") // ACF
-    maven("https://nexus.scarsz.me/content/repositories/releases") // Configuralize
-    maven("https://repo.opencollab.dev/maven-snapshots/") // Floodgate
-    maven("https://repo.opencollab.dev/maven-releases/") // Cumulus (for Floodgate)
-    maven("https://repo.codemc.io/repository/maven-releases/") // PacketEvents
-    maven("https://repo.codemc.io/repository/maven-snapshots/")
-    maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
-    maven("https://repo.extendedclip.com/content/repositories/placeholderapi/") // placeholderapi
-    mavenCentral()
-    // FastUtil, Discord-Webhooks
-}
-
-dependencies {
-    implementation("com.github.retrooper:packetevents-spigot:2.7.1-SNAPSHOT")
-    implementation("co.aikar:acf-paper:0.5.1-SNAPSHOT")
-    implementation("club.minnced:discord-webhooks:0.8.0") // Newer versions include kotlin-stdlib, which leads to incompatibility with plugins that use Kotlin
-    implementation("it.unimi.dsi:fastutil:8.5.15")
-    implementation("github.scarsz:configuralize:1.4.0")
-
-
-    // Used for local testing:
-    //implementation("ac.grim.grimac:GrimAPI:1.0")
-    implementation("com.github.grimanticheat:grimapi:ed1ec7b4a1")
-
-    implementation("net.kyori:adventure-text-minimessage:4.17.0")
-    implementation("net.kyori:adventure-platform-bukkit:4.3.4")
-
-    implementation("org.jetbrains:annotations:24.1.0")
-    compileOnly("org.geysermc.floodgate:api:2.0-SNAPSHOT")
-    compileOnly("io.papermc.paper:paper-api:1.18.2-R0.1-SNAPSHOT")
-    compileOnly("com.viaversion:viaversion-api:5.0.4-SNAPSHOT")
-    compileOnly("me.clip:placeholderapi:2.11.6")
-    compileOnly("io.netty:netty-all:4.1.85.Final")
-}
-
-bukkit {
-    name = "GrimAC"
-    author = "GrimAC"
-    main = "ac.grim.grimac.GrimAC"
-    website = "https://grim.ac/"
-    apiVersion = "1.13"
-    foliaSupported = true
-
-    softDepend = listOf(
-        "ProtocolLib",
-        "ProtocolSupport",
-        "Essentials",
-        "ViaVersion",
-        "ViaBackwards",
-        "ViaRewind",
-        "Geyser-Spigot",
-        "floodgate",
-        "FastLogin",
-        "PlaceholderAPI",
-    )
-
-    permissions {
-        register("grim.alerts") {
-            description = "Receive alerts for violations"
-            default = Permission.Default.OP
-        }
-
-        register("grim.alerts.enable-on-join") {
-            description = "Enable alerts on join"
-            default = Permission.Default.OP
-        }
-
-        register("grim.performance") {
-            description = "Check performance metrics"
-            default = Permission.Default.OP
-        }
-
-        register("grim.profile") {
-            description = "Check user profile"
-            default = Permission.Default.OP
-        }
-
-        register("grim.brand") {
-            description = "Show client brands on join"
-            default = Permission.Default.OP
-        }
-
-        register("grim.brand.enable-on-join") {
-            description = "Enable showing client brands on join"
-            default = Permission.Default.OP
-        }
-
-        register("grim.sendalert") {
-            description = "Send cheater alert"
-            default = Permission.Default.OP
-        }
-
-        register("grim.nosetback") {
-            description = "Disable setback"
-            default = Permission.Default.FALSE
-        }
-
-        register("grim.nomodifypacket") {
-            description = "Disable modifying packets"
-            default = Permission.Default.FALSE
-        }
-
-        register("grim.exempt") {
-            description = "Exempt from all checks"
-            default = Permission.Default.FALSE
-        }
-
-        register("grim.verbose") {
-            description = "Receive verbose alerts for violations. Requires grim.alerts"
-            default = Permission.Default.OP
-        }
-
-        register("grim.verbose.enable-on-join") {
-            description = "Enable verbose alerts on join. Requires grim.alerts and grim.alerts.enable-on-join"
-            default = Permission.Default.FALSE
-        }
-    }
-}
-
-tasks.build {
-    dependsOn(tasks.shadowJar)
-    dependsOn(tasks.spotlessApply)
-}
-
-tasks.withType<JavaCompile> {
-    options.encoding = "UTF-8"
-}
-
-publishing.publications.create<MavenPublication>("maven") {
-    artifact(tasks["shadowJar"])
-}
-
-tasks.shadowJar {
-    minimize()
-    archiveFileName.set("${project.name}-${project.version}.jar")
-    if (relocate) {
-        relocate("io.github.retrooper.packetevents", "ac.grim.grimac.shaded.io.github.retrooper.packetevents")
-        relocate("com.github.retrooper.packetevents", "ac.grim.grimac.shaded.com.github.retrooper.packetevents")
-        relocate("co.aikar.commands", "ac.grim.grimac.shaded.acf")
-        relocate("co.aikar.locale", "ac.grim.grimac.shaded.locale")
-        relocate("club.minnced", "ac.grim.grimac.shaded.discord-webhooks")
-        relocate("github.scarsz.configuralize", "ac.grim.grimac.shaded.configuralize")
-        relocate("com.github.puregero", "ac.grim.grimac.shaded.com.github.puregero")
-        relocate("com.google.code.gson", "ac.grim.grimac.shaded.gson")
-        relocate("alexh", "ac.grim.grimac.shaded.maps")
-        relocate("it.unimi.dsi.fastutil", "ac.grim.grimac.shaded.fastutil")
-        relocate("net.kyori", "ac.grim.grimac.shaded.kyori")
-        relocate("okhttp3", "ac.grim.grimac.shaded.okhttp3")
-        relocate("okio", "ac.grim.grimac.shaded.okio")
-        relocate("org.yaml.snakeyaml", "ac.grim.grimac.shaded.snakeyaml")
-        relocate("org.json", "ac.grim.grimac.shaded.json")
-        relocate("org.intellij", "ac.grim.grimac.shaded.intellij")
-        relocate("org.jetbrains", "ac.grim.grimac.shaded.jetbrains")
-    }
+// Build Optimization:
+// - Add parallel build support
+// - Add build caching
+tasks.withType<JavaCompile>().configureEach {
+    options.isFork = true
+    options.isIncremental = true
 }

buildSrc/build.gradle.kts

@@ -0,0 +1,16 @@
+plugins {
+    `kotlin-dsl`
+    kotlin("plugin.serialization") version "1.9.0" // Use the same Kotlin version as your main project
+}
+
+repositories {
+    mavenCentral()
+    gradlePluginPortal()
+}
+
+dependencies {
+    implementation(libs.spotless)
+    implementation(libs.lombok)
+    implementation(libs.shadow)
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.0")
+}

buildSrc/settings.gradle.kts

@@ -0,0 +1,7 @@
+dependencyResolutionManagement {
+    versionCatalogs {
+        create("libs") {
+            from(files("../libs.versions.toml"))
+        }
+    }
+}

buildSrc/src/main/kotlin/grim.base-conventions.gradle.kts

@@ -0,0 +1,72 @@
+plugins {
+    `java-library`
+    id("io.freefair.lombok")
+    id("com.diffplug.spotless")
+}
+
+group = rootProject.group
+version = rootProject.version
+description = rootProject.description
+
+// Java compilation settings
+java {
+    toolchain.languageVersion.set(JavaLanguageVersion.of(21))
+    disableAutoTargetJvm()
+    withSourcesJar()
+    withJavadocJar()
+}
+
+tasks.withType<JavaCompile>().configureEach {
+    options.encoding = "UTF-8"
+    options.release.set(17)
+}
+
+// Lombok configuration
+//lombok {
+//    version.set("1.18.30") // Use the version from your version catalog if available
+//}
+
+// Spotless configuration
+spotless {
+    java {
+        endWithNewline()
+        indentWithSpaces(4)
+        removeUnusedImports()
+        trimTrailingWhitespace()
+        targetExclude("build/generated/**/*")
+    }
+
+    kotlinGradle {
+        endWithNewline()
+        indentWithSpaces(4)
+        trimTrailingWhitespace()
+    }
+}
+
+// Ensure spotlessApply runs before build
+tasks.build {
+    dependsOn(tasks.named("spotlessApply"))
+}
+
+// Process resources (e.g., for plugin metadata files)
+//tasks.processResources {
+//    inputs.property("version", project.version)
+//    filesMatching(listOf("plugin.yml", "bungee.yml", "velocity-plugin.json", "fabric.mod.json")) {
+//        expand("version" to project.version)
+//    }
+//}
+
+// Javadoc configuration
+tasks.javadoc {
+    title = "${rootProject.name}-${project.name} v${rootProject.version}"
+    options.encoding = "UTF-8"
+    options.overview =
+        rootProject.file("buildSrc/src/main/resources/javadoc-overview.html").toString()
+    setDestinationDir(file("${project.layout.buildDirectory.asFile.get()}/docs/javadoc"))
+    options {
+        (this as CoreJavadocOptions).addBooleanOption("Xdoclint:none", true)
+    }
+}
+
+// Default tasks
+defaultTasks("build")

buildSrc/src/main/kotlin/grim.jij-conventions.gradle.kts

@@ -0,0 +1,391 @@
+import kotlinx.serialization.json.*
+import java.util.jar.JarFile
+import java.util.zip.ZipEntry
+
+plugins {
+    `java-library`
+}
+
+val jijDependencies: Configuration by project.configurations.creating {
+    isCanBeResolved = true
+    isCanBeConsumed = false
+    extendsFrom(project.configurations.getByName("implementation"))
+    project.configurations.findByName("modImplementation")?.let { extendsFrom(it) }
+}
+
+data class DependencyIdentifier(
+    val group: String,
+    val name: String,
+    val version: String,
+    val classifier: String = "" // Add classifier field, default to empty string
+) {
+    override fun toString() = "$group:$name:$version${if (classifier.isNotEmpty()) ":$classifier" else ""}"
+}
+
+// Does not support extracting classifiers but while the fabric standard is ambiguous on whether they can be included
+// It does not appear dependency classifiers are in use by any mod I am aware of or can find
+fun parseFabricModJson(jarFile: File, project: Project): Set<DependencyIdentifier> {
+    val nestedJars = mutableSetOf<DependencyIdentifier>()
+    try {
+        JarFile(jarFile).use { jar ->
+            val fabricModJsonEntry: ZipEntry? = jar.getEntry("fabric.mod.json")
+            if (fabricModJsonEntry != null) {
+                jar.getInputStream(fabricModJsonEntry).bufferedReader().use { reader ->
+                    val jsonContent = reader.readText()
+                    val jsonElement = Json.parseToJsonElement(jsonContent)
+                    val jsonObject = jsonElement.jsonObject
+                    val jarsArray = jsonObject["jars"]?.jsonArray ?: return@use
+                    jarsArray.forEach { jarEntry: JsonElement ->
+                        val filePath =
+                            jarEntry.jsonObject["file"]?.jsonPrimitive?.content ?: return@forEach
+                        project.logger.debug(
+                            "Found nested JAR in fabric.mod.json: {} in {}",
+                            filePath,
+                            jarFile
+                        )
+                        val jarName = filePath.substringAfterLast("/")
+                        val parts = jarName.removeSuffix(".jar").split("-")
+                        if (parts.size >= 2) {
+                            val inferredName = parts.dropLast(1).joinToString("-")
+                            val inferredVersion = parts.last()
+                            nestedJars.add(DependencyIdentifier("", inferredName, inferredVersion))
+                            project.logger.debug("Inferred nested dependency from fabric.mod.json: :$inferredName:$inferredVersion")
+                        }
+                    }
+                }
+            }
+        }
+    } catch (e: Exception) {
+        project.logger.error("Failed to parse fabric.mod.json in $jarFile: ${e.message}")
+    }
+    return nestedJars
+}
+
+fun extractEmbeddedJars(jarFile: File, project: Project): Set<DependencyIdentifier> {
+    val embeddedJars = mutableSetOf<DependencyIdentifier>()
+    embeddedJars.addAll(parseFabricModJson(jarFile, project))
+    try {
+        JarFile(jarFile).use { jar ->
+            val entries = jar.entries()
+            while (entries.hasMoreElements()) {
+                val entry = entries.nextElement()
+                val entryName = entry.name
+                if (entryName.endsWith(".jar") && (entryName.startsWith("META-INF/jarjar/") || entryName.startsWith(
+                        "libs/"
+                    ) || entryName.startsWith("META-INF/jars/"))
+                ) {
+                    project.logger.debug("Found embedded JAR: {} in {}", entryName, jarFile)
+                    val tempFile = File.createTempFile("embedded-", ".jar")
+                    tempFile.deleteOnExit()
+                    jar.getInputStream(entry).use { input ->
+                        tempFile.outputStream().use { output ->
+                            input.copyTo(output)
+                        }
+                    }
+                    JarFile(tempFile).use { embeddedJar ->
+                        val manifest = embeddedJar.manifest
+                        if (manifest != null) {
+                            val group =
+                                manifest.mainAttributes.getValue("Implementation-Vendor") ?: ""
+                            val name = manifest.mainAttributes.getValue("Implementation-Title")
+                                ?: embeddedJar.name
+                            val version =
+                                manifest.mainAttributes.getValue("Implementation-Version") ?: ""
+                            if (group.isNotEmpty() && name.isNotEmpty() && version.isNotEmpty()) {
+                                embeddedJars.add(DependencyIdentifier(group, name, version))
+                                project.logger.debug("Identified embedded dependency: $group:$name:$version")
+                            } else {
+                                val jarName = entryName.substringAfterLast("/")
+                                val parts = jarName.removeSuffix(".jar").split("-")
+                                if (parts.size >= 2) {
+                                    val inferredName = parts.dropLast(1).joinToString("-")
+                                    val inferredVersion = parts.last()
+                                    embeddedJars.add(
+                                        DependencyIdentifier(
+                                            "",
+                                            inferredName,
+                                            inferredVersion
+                                        )
+                                    )
+                                    project.logger.debug("Inferred embedded dependency from filename: :$inferredName:$inferredVersion")
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    } catch (e: Exception) {
+        project.logger.error("Failed to analyze JAR file $jarFile for embedded JARs: ${e.message}")
+    }
+    return embeddedJars
+}
+
+fun shouldExcludeDependency(
+    dependency: ResolvedDependency,
+    allEmbeddedDependencies: Set<DependencyIdentifier>,
+    actuallyIncludedDependencies: Set<DependencyIdentifier>,
+    project: Project
+): Boolean {
+    val group = dependency.moduleGroup
+    val name = dependency.moduleName
+    val version = dependency.moduleVersion
+    // Extract classifier from resolved dependency (if available)
+    val classifier = dependency.moduleArtifacts.firstOrNull()?.classifier ?: ""
+    val depId = DependencyIdentifier(group, name, version, classifier)
+
+    if (group.startsWith("net.minecraft") ||
+        group.startsWith("net.fabricmc") ||
+        name == "minecraft" ||
+        name == "fabric-loader" ||
+        name == "fastutil" ||
+        name.startsWith("fabric_") ||
+        name.startsWith("fabric-api")
+    ) {
+        project.logger.debug("Excluding platform dependency: {}", depId)
+        return true
+    }
+
+    if (name.endsWith("-bom") || name.contains("_bom")) {
+        project.logger.debug("Excluding BOM file: {}", depId)
+        return true
+    }
+
+    if (allEmbeddedDependencies.any { it.name == name && it.version == version && it.classifier == classifier }) {
+        project.logger.debug("Excluding dependency already embedded in another JAR: {}", depId)
+        return true
+    }
+
+    if (actuallyIncludedDependencies.any { it.name == name && it.version == version && it.classifier == classifier }) {
+        project.logger.debug("Excluding duplicate dependency: {}", depId)
+        return true
+    }
+
+    return false
+}
+
+fun isJijTarget(
+    dependency: ResolvedDependency,
+    allEmbeddedDependencies: Set<DependencyIdentifier>,
+    actuallyIncludedDependencies: Set<DependencyIdentifier>,
+    project: Project
+): Boolean {
+    val classifier = dependency.moduleArtifacts.firstOrNull()?.classifier ?: ""
+    project.logger.debug(
+        "Checking JIJ target: {}",
+        DependencyIdentifier(
+            dependency.moduleGroup,
+            dependency.moduleName,
+            dependency.moduleVersion,
+            classifier
+        )
+    )
+    return !shouldExcludeDependency(
+        dependency,
+        allEmbeddedDependencies,
+        actuallyIncludedDependencies,
+        project
+    )
+}
+
+fun includeDependencyWithExclusions(
+    depId: DependencyIdentifier,
+    project: Project,
+    actuallyIncludedDependencies: MutableSet<DependencyIdentifier>,
+    allEmbeddedDependencies: Set<DependencyIdentifier>
+) {
+    project.logger.debug("Including external dependency as JIJ with dynamic exclusions: {}", depId)
+    project.dependencies {
+        // Include dependency with classifier (if present)
+        "include"("${depId.group}:${depId.name}:${depId.version}${if (depId.classifier.isNotEmpty()) ":${depId.classifier}" else ""}") {
+            allEmbeddedDependencies.forEach { embeddedDep ->
+                if (embeddedDep.group.isNotEmpty()) {
+                    exclude(group = embeddedDep.group, module = embeddedDep.name)
+                } else {
+                    exclude(module = embeddedDep.name)
+                }
+                project.logger.debug("Excluding embedded transitive dependency: ${embeddedDep.name}:${embeddedDep.version}${if (embeddedDep.classifier.isNotEmpty()) ":${embeddedDep.classifier}" else ""}")
+            }
+        }
+    }
+    actuallyIncludedDependencies.add(depId)
+}
+
+fun processDependencies(
+    dependencies: Set<ResolvedDependency>,
+    processed: MutableSet<String>,
+    allEmbeddedDependencies: MutableMap<DependencyIdentifier, File>,
+    actuallyIncludedDependencies: MutableSet<DependencyIdentifier>,
+    project: Project
+) {
+    dependencies.forEach { dep: ResolvedDependency ->
+        val classifier = dep.moduleArtifacts.firstOrNull()?.classifier ?: ""
+        val depKey = "${dep.moduleGroup}:${dep.moduleName}:${dep.moduleVersion}${if (classifier.isNotEmpty()) ":$classifier" else ""}"
+        val depId = DependencyIdentifier(dep.moduleGroup, dep.moduleName, dep.moduleVersion, classifier)
+        if (!processed.contains(depKey)) {
+            processed.add(depKey)
+            project.logger.debug("Resolved dependency: {}", depId)
+
+            val jarFile = dep.moduleArtifacts.firstOrNull()?.file
+            if (jarFile != null && jarFile.exists()) {
+                val embeddedJars = extractEmbeddedJars(jarFile, project)
+                embeddedJars.forEach { embeddedDep ->
+                    allEmbeddedDependencies[embeddedDep] = jarFile
+                }
+            }
+
+            if (isJijTarget(
+                    dep,
+                    allEmbeddedDependencies.keys,
+                    actuallyIncludedDependencies,
+                    project
+                )
+            ) {
+                project.logger.debug("Processing JIJ dependency: {}", depId)
+                val isProjectDependency = project.rootProject.allprojects.any { subproject ->
+                    subproject.name == dep.moduleName && (subproject.group == dep.moduleGroup || dep.moduleGroup.isEmpty())
+                }
+                if (isProjectDependency) {
+                    val projectPath = project.rootProject.allprojects.find { subproject ->
+                        subproject.name == dep.moduleName && (subproject.group == dep.moduleGroup || dep.moduleGroup.isEmpty())
+                    }?.path
+                        ?: throw IllegalStateException("Project dependency not found: ${dep.moduleName}")
+                    project.logger.debug("Including project dependency as JIJ: $projectPath")
+                    project.dependencies {
+                        "include"(project.project(projectPath))
+                    }
+                    actuallyIncludedDependencies.add(depId)
+                } else {
+                    includeDependencyWithExclusions(
+                        depId,
+                        project,
+                        actuallyIncludedDependencies,
+                        allEmbeddedDependencies.keys
+                    )
+                }
+            }
+
+            processDependencies(
+                dep.children,
+                processed,
+                allEmbeddedDependencies,
+                actuallyIncludedDependencies,
+                project
+            )
+        }
+    }
+}
+
+project.afterEvaluate {
+    project.logger.debug("Resolving jijDependencies configuration")
+    val resolvedDependencies = jijDependencies.resolvedConfiguration.firstLevelModuleDependencies
+
+    val processed = mutableSetOf<String>()
+    val allEmbeddedDependencies = mutableMapOf<DependencyIdentifier, File>()
+    val actuallyIncludedDependencies = mutableSetOf<DependencyIdentifier>()
+
+    fun collectAllEmbeddedDependencies(dependencies: Set<ResolvedDependency>) {
+        dependencies.forEach { dep ->
+            val classifier = dep.moduleArtifacts.firstOrNull()?.classifier ?: ""
+            val depKey = "${dep.moduleGroup}:${dep.moduleName}:${dep.moduleVersion}${if (classifier.isNotEmpty()) ":$classifier" else ""}"
+            if (!processed.contains(depKey)) {
+                processed.add(depKey)
+                val jarFile = dep.moduleArtifacts.firstOrNull()?.file
+                if (jarFile != null && jarFile.exists()) {
+                    val embeddedJars = extractEmbeddedJars(jarFile, project)
+                    embeddedJars.forEach { embeddedDep ->
+                        allEmbeddedDependencies[embeddedDep] = jarFile
+                        project.logger.debug(
+                            "Collected embedded dependency: {} from {}",
+                            embeddedDep,
+                            jarFile
+                        )
+                    }
+                }
+                collectAllEmbeddedDependencies(dep.children)
+            }
+        }
+    }
+
+    processed.clear()
+    collectAllEmbeddedDependencies(resolvedDependencies)
+
+    processed.clear()
+    processDependencies(
+        resolvedDependencies,
+        processed,
+        allEmbeddedDependencies,
+        actuallyIncludedDependencies,
+        project
+    )
+}
+
+tasks.withType<Jar>().configureEach {
+    doFirst {
+        project.logger.debug("Resolving JIJ dependencies for JAR inclusion")
+        val resolvedDependencies =
+            jijDependencies.resolvedConfiguration.firstLevelModuleDependencies
+        val processed = mutableSetOf<String>()
+        val allEmbeddedDependencies = mutableMapOf<DependencyIdentifier, File>()
+        val actuallyIncludedDependencies = mutableSetOf<DependencyIdentifier>()
+
+        fun collectAllEmbeddedDependencies(dependencies: Set<ResolvedDependency>) {
+            dependencies.forEach { dep ->
+                val depKey = "${dep.moduleGroup}:${dep.moduleName}:${dep.moduleVersion}"
+                if (!processed.contains(depKey)) {
+                    processed.add(depKey)
+                    val jarFile = dep.moduleArtifacts.firstOrNull()?.file
+                    if (jarFile != null && jarFile.exists()) {
+                        val embeddedJars = extractEmbeddedJars(jarFile, project)
+                        embeddedJars.forEach { embeddedDep ->
+                            allEmbeddedDependencies[embeddedDep] = jarFile
+                            project.logger.debug(
+                                "Collected embedded dependency for JAR: {} from {}",
+                                embeddedDep,
+                                jarFile
+                            )
+                        }
+                    }
+                    collectAllEmbeddedDependencies(dep.children)
+                }
+            }
+        }
+
+        processed.clear()
+        collectAllEmbeddedDependencies(resolvedDependencies)
+
+        processed.clear()
+
+        fun logDependencies(dependencies: Set<ResolvedDependency>) {
+            dependencies.forEach { dep ->
+                val depKey = "${dep.moduleGroup}:${dep.moduleName}:${dep.moduleVersion}"
+                val depId = DependencyIdentifier(dep.moduleGroup, dep.moduleName, dep.moduleVersion)
+                if (!processed.contains(depKey)) {
+                    processed.add(depKey)
+                    project.logger.debug("Resolved JIJ dependency for JAR: {}", depId)
+
+                    val jarFile = dep.moduleArtifacts.firstOrNull()?.file
+                    if (jarFile != null && jarFile.exists()) {
+                        val embeddedJars = extractEmbeddedJars(jarFile, project)
+                        embeddedJars.forEach { embeddedDep ->
+                            allEmbeddedDependencies[embeddedDep] = jarFile
+                        }
+                    }
+
+                    if (isJijTarget(
+                            dep,
+                            allEmbeddedDependencies.keys,
+                            actuallyIncludedDependencies,
+                            project
+                        )
+                    ) {
+                        project.logger.debug("Including JIJ dependency in JAR: {}", depId)
+                        actuallyIncludedDependencies.add(depId)
+                    }
+                    logDependencies(dep.children)
+                }
+            }
+        }
+        logDependencies(resolvedDependencies)
+    }
+}

buildSrc/src/main/kotlin/grim.shadow-conventions.gradle.kts

@@ -0,0 +1,52 @@
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+
+plugins {
+    id("com.gradleup.shadow")
+}
+
+val relocate: Boolean by rootProject.extra
+
+// Create a configuration for shading dependencies from common
+val shadowCommon: Configuration by project.configurations.creating {
+    isCanBeResolved = true
+    isCanBeConsumed = false
+    extendsFrom(project.configurations.getByName("implementation"))
+}
+
+tasks.named<ShadowJar>("shadowJar") {
+    minimize()
+    archiveFileName.set("${rootProject.name}-${project.name}-${rootProject.version}.jar")
+    from(shadowCommon) // Use from() instead of direct assignment
+
+    if (relocate) {
+        relocate(
+            "io.github.retrooper.packetevents",
+            "ac.grim.grimac.shaded.io.github.retrooper.packetevents"
+        )
+        relocate(
+            "com.github.retrooper.packetevents",
+            "ac.grim.grimac.shaded.com.github.retrooper.packetevents"
+        )
+        relocate("club.minnced", "ac.grim.grimac.shaded.discord-webhooks")
+        relocate("org.slf4j", "ac.grim.grimac.shaded.slf4j") // Required by discord-webhooks
+        relocate("github.scarsz.configuralize", "ac.grim.grimac.shaded.configuralize")
+        relocate("com.github.puregero", "ac.grim.grimac.shaded.com.github.puregero")
+        relocate("com.google.code.gson", "ac.grim.grimac.shaded.gson")
+        relocate("alexh", "ac.grim.grimac.shaded.maps")
+        relocate("it.unimi.dsi.fastutil", "ac.grim.grimac.shaded.fastutil")
+        relocate("net.kyori", "ac.grim.grimac.shaded.kyori")
+        relocate("okhttp3", "ac.grim.grimac.shaded.okhttp3")
+        relocate("okio", "ac.grim.grimac.shaded.okio")
+        relocate("org.yaml.snakeyaml", "ac.grim.grimac.shaded.snakeyaml")
+        relocate("org.json", "ac.grim.grimac.shaded.json")
+        relocate("org.intellij", "ac.grim.grimac.shaded.intellij")
+        relocate("org.jetbrains", "ac.grim.grimac.shaded.jetbrains")
+        relocate("org.incendo", "ac.grim.grimac.shaded.incendo")
+        relocate("io.leangen.geantyref", "ac.grim.grimac.shaded.geantyref") // Required by cloud
+    }
+    mergeServiceFiles()
+}
+
+tasks.named("assemble") {
+    dependsOn(tasks.named("shadowJar"))
+}

bukkit/build.gradle.kts

@@ -0,0 +1,139 @@
+import net.minecrell.pluginyml.bukkit.BukkitPluginDescription.Permission
+
+plugins {
+    `maven-publish`
+    grim.`base-conventions`
+    grim.`shadow-conventions`
+    id("net.minecrell.plugin-yml.bukkit") version "0.6.0"
+}
+
+repositories {
+    mavenLocal()
+    maven {
+        name = "papermc"
+        url = uri("https://repo.papermc.io/repository/maven-public/")
+    }
+    maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/") // Spigot
+    maven("https://jitpack.io/") { // Grim API
+        content {
+            includeGroup("com.github.grimanticheat")
+        }
+    }
+    maven("https://repo.viaversion.com") // ViaVersion
+    maven("https://nexus.scarsz.me/content/repositories/releases") // Configuralize
+    maven("https://repo.opencollab.dev/maven-snapshots/") // Floodgate
+    maven("https://repo.opencollab.dev/maven-releases/") // Cumulus (for Floodgate)
+    maven("https://repo.codemc.io/repository/maven-releases/") // PacketEvents
+    maven("https://repo.codemc.io/repository/maven-snapshots/")
+    maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
+    maven("https://repo.extendedclip.com/content/repositories/placeholderapi/") // placeholderapi
+    mavenCentral()
+    // FastUtil, Discord-Webhooks
+}
+
+dependencies {
+    compileOnly(libs.paper.api)
+    compileOnly(libs.placeholderapi)
+
+    implementation(libs.packetevents.spigot)
+    implementation(libs.cloud.paper)
+    implementation(libs.adventure.platform.bukkit)
+
+    implementation(project(":common"))
+    shadow(project(":common"))
+}
+
+bukkit {
+    name = "GrimAC"
+    author = "GrimAC"
+    main = "ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin"
+    website = "https://grim.ac/"
+    apiVersion = "1.13"
+    foliaSupported = true
+
+    softDepend = listOf(
+        "ProtocolLib",
+        "ProtocolSupport",
+        "Essentials",
+        "ViaVersion",
+        "ViaBackwards",
+        "ViaRewind",
+        "Geyser-Spigot",
+        "floodgate",
+        "FastLogin",
+        "PlaceholderAPI",
+    )
+
+    permissions {
+        register("grim.alerts") {
+            description = "Receive alerts for violations"
+            default = Permission.Default.OP
+        }
+
+        register("grim.alerts.enable-on-join") {
+            description = "Enable alerts on join"
+            default = Permission.Default.OP
+        }
+
+        register("grim.performance") {
+            description = "Check performance metrics"
+            default = Permission.Default.OP
+        }
+
+        register("grim.profile") {
+            description = "Check user profile"
+            default = Permission.Default.OP
+        }
+
+        register("grim.brand") {
+            description = "Show client brands on join"
+            default = Permission.Default.OP
+        }
+
+        register("grim.brand.enable-on-join") {
+            description = "Enable showing client brands on join"
+            default = Permission.Default.OP
+        }
+
+        register("grim.sendalert") {
+            description = "Send cheater alert"
+            default = Permission.Default.OP
+        }
+
+        register("grim.nosetback") {
+            description = "Disable setback"
+            default = Permission.Default.FALSE
+        }
+
+        register("grim.nomodifypacket") {
+            description = "Disable modifying packets"
+            default = Permission.Default.FALSE
+        }
+
+        register("grim.exempt") {
+            description = "Exempt from all checks"
+            default = Permission.Default.FALSE
+        }
+
+        register("grim.verbose") {
+            description = "Receive verbose alerts for violations. Requires grim.alerts"
+            default = Permission.Default.OP
+        }
+
+        register("grim.verbose.enable-on-join") {
+            description =
+                "Enable verbose alerts on join. Requires grim.alerts and grim.alerts.enable-on-join"
+            default = Permission.Default.FALSE
+        }
+    }
+}
+
+publishing.publications.create<MavenPublication>("maven") {
+    artifact(tasks["shadowJar"])
+}
+
+tasks.shadowJar {
+    manifest {
+        attributes["paperweight-mappings-namespace"] = "mojang"
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/BukkitPlatformPlugin.java

@@ -0,0 +1,27 @@
+package ac.grim.grimac.platform.bukkit;
+
+import ac.grim.grimac.platform.api.PlatformPlugin;
+import org.bukkit.plugin.Plugin;
+
+public class BukkitPlatformPlugin implements PlatformPlugin {
+    private final Plugin plugin;
+
+    public BukkitPlatformPlugin(Plugin plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return plugin.isEnabled();
+    }
+
+    @Override
+    public String getName() {
+        return plugin.getName();
+    }
+
+    @Override
+    public String getVersion() {
+        return plugin.getDescription().getVersion();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/BukkitPlatformServer.java

@@ -0,0 +1,37 @@
+package ac.grim.grimac.platform.bukkit;
+
+import ac.grim.grimac.platform.api.PlatformServer;
+import ac.grim.grimac.platform.api.sender.Sender;
+import io.github.retrooper.packetevents.util.SpigotReflectionUtil;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+
+
+public class BukkitPlatformServer implements PlatformServer {
+
+    @Override
+    public String getPlatformImplementationString() {
+        return Bukkit.getVersion();
+    }
+
+    @Override
+    public void dispatchCommand(Sender sender, String command) {
+        CommandSender commandSender = GrimACBukkitLoaderPlugin.LOADER.getBukkitSenderFactory().reverse(sender);
+        Bukkit.dispatchCommand(commandSender, command);
+    }
+
+    @Override
+    public Sender getConsoleSender() {
+        return GrimACBukkitLoaderPlugin.LOADER.getBukkitSenderFactory().map(Bukkit.getConsoleSender());
+    }
+
+    @Override
+    public void registerOutgoingPluginChannel(String bungeeCord) {
+        GrimACBukkitLoaderPlugin.LOADER.getServer().getMessenger().registerOutgoingPluginChannel(GrimACBukkitLoaderPlugin.LOADER, "BungeeCord");
+    }
+
+    @Override
+    public double getTPS() {
+        return SpigotReflectionUtil.getTPS();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/GrimACBukkitLoaderPlugin.java

@@ -0,0 +1,195 @@
+package ac.grim.grimac.platform.bukkit;
+
+import ac.grim.grimac.api.plugin.BasicGrimPlugin;
+import ac.grim.grimac.GrimAPI;
+import ac.grim.grimac.api.GrimAPIProvider;
+import ac.grim.grimac.api.GrimAbstractAPI;
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.manager.init.Initable;
+import ac.grim.grimac.manager.init.start.ExemptOnlinePlayersOnReload;
+import ac.grim.grimac.manager.init.start.StartableInitable;
+import ac.grim.grimac.platform.api.Platform;
+import ac.grim.grimac.platform.api.PlatformLoader;
+import ac.grim.grimac.platform.api.PlatformServer;
+import ac.grim.grimac.platform.api.manager.ItemResetHandler;
+import ac.grim.grimac.platform.api.manager.MessagePlaceHolderManager;
+import ac.grim.grimac.platform.api.manager.ParserDescriptorFactory;
+import ac.grim.grimac.platform.api.manager.PermissionRegistrationManager;
+import ac.grim.grimac.platform.api.manager.PlatformPluginManager;
+import ac.grim.grimac.platform.api.player.PlatformPlayerFactory;
+import ac.grim.grimac.platform.api.scheduler.PlatformScheduler;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.api.sender.SenderFactory;
+import ac.grim.grimac.platform.bukkit.initables.BukkitBStats;
+import ac.grim.grimac.platform.bukkit.initables.BukkitEventManager;
+import ac.grim.grimac.platform.bukkit.initables.BukkitTickEndEvent;
+import ac.grim.grimac.platform.bukkit.manager.BukkitItemResetHandler;
+import ac.grim.grimac.platform.bukkit.manager.BukkitMessagePlaceHolderManager;
+import ac.grim.grimac.platform.bukkit.manager.BukkitParserDescriptorFactory;
+import ac.grim.grimac.platform.bukkit.manager.BukkitPermissionRegistrationManager;
+import ac.grim.grimac.platform.bukkit.manager.BukkitPlatformPluginManager;
+import ac.grim.grimac.platform.bukkit.player.BukkitPlatformPlayerFactory;
+import ac.grim.grimac.platform.bukkit.scheduler.bukkit.BukkitPlatformScheduler;
+import ac.grim.grimac.platform.bukkit.scheduler.folia.FoliaPlatformScheduler;
+import ac.grim.grimac.platform.bukkit.sender.BukkitSenderFactory;
+import ac.grim.grimac.platform.bukkit.utils.placeholder.PlaceholderAPIExpansion;
+import ac.grim.grimac.utils.anticheat.MessageUtil;
+import ac.grim.grimac.utils.lazy.LazyHolder;
+import com.github.retrooper.packetevents.PacketEventsAPI;
+import io.github.retrooper.packetevents.factory.spigot.SpigotPacketEventsBuilder;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.ServicePriority;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.bukkit.CloudBukkitCapabilities;
+import org.incendo.cloud.execution.ExecutionCoordinator;
+import org.incendo.cloud.paper.LegacyPaperCommandManager;
+import org.jetbrains.annotations.NotNull;
+
+public final class GrimACBukkitLoaderPlugin extends JavaPlugin implements PlatformLoader {
+
+    public static GrimACBukkitLoaderPlugin LOADER;
+
+    private final LazyHolder<PlatformScheduler> scheduler = LazyHolder.simple(this::createScheduler);
+    private final LazyHolder<PacketEventsAPI<?>> packetEvents = LazyHolder.simple(() -> SpigotPacketEventsBuilder.build(this));
+    private final LazyHolder<BukkitSenderFactory> senderFactory = LazyHolder.simple(BukkitSenderFactory::new);
+    private final LazyHolder<CommandManager<Sender>> commandManager = LazyHolder.simple(this::createCommandManager);
+    private final LazyHolder<ItemResetHandler> itemResetHandler = LazyHolder.simple(BukkitItemResetHandler::new);
+
+    private final PlatformPlayerFactory playerFactory = new BukkitPlatformPlayerFactory();
+    private final ParserDescriptorFactory parserFactory = new BukkitParserDescriptorFactory();
+    private final PlatformPluginManager platformPluginManager = new BukkitPlatformPluginManager();
+    private final GrimPlugin plugin;
+    private final PlatformServer platformServer = new BukkitPlatformServer();
+    private final MessagePlaceHolderManager messagePlaceHolderManager = new BukkitMessagePlaceHolderManager();
+    private final BukkitPermissionRegistrationManager bukkitPermissionRegistrationManager = new BukkitPermissionRegistrationManager();
+
+    public GrimACBukkitLoaderPlugin() {
+        this.plugin = new BasicGrimPlugin(
+                this.getLogger(),
+                this.getDataFolder(),
+                this.getDescription().getVersion(),
+                this.getDescription().getDescription(),
+                this.getDescription().getAuthors()
+        );
+    }
+
+    @Override
+    public void onLoad() {
+        LOADER = this;
+        GrimAPI.INSTANCE.load(this, this.getBukkitInitTasks());
+    }
+
+    private Initable[] getBukkitInitTasks() {
+        return new Initable[]{
+                new ExemptOnlinePlayersOnReload(),
+                new BukkitEventManager(),
+                new BukkitTickEndEvent(),
+                new BukkitBStats(),
+                (StartableInitable) () -> {
+                    if (MessageUtil.hasPlaceholderAPI) {
+                        new PlaceholderAPIExpansion().register();
+                    }
+                }
+        };
+    }
+
+    @Override
+    public void onEnable() {
+        GrimAPI.INSTANCE.start();
+    }
+
+    @Override
+    public void onDisable() {
+        GrimAPI.INSTANCE.stop();
+    }
+
+    @Override
+    public PlatformScheduler getScheduler() {
+        return scheduler.get();
+    }
+
+    @Override
+    public PlatformPlayerFactory getPlatformPlayerFactory() {
+        return playerFactory;
+    }
+
+    @Override
+    public ParserDescriptorFactory getParserDescriptorFactory() {
+        return parserFactory;
+    }
+
+    @Override
+    public PacketEventsAPI<?> getPacketEvents() {
+        return packetEvents.get();
+    }
+
+    @Override
+    public CommandManager<Sender> getCommandManager() {
+        return commandManager.get();
+    }
+
+    @Override
+    public ItemResetHandler getItemResetHandler() {
+        return itemResetHandler.get();
+    }
+
+    @Override
+    public SenderFactory<CommandSender> getSenderFactory() {
+        return senderFactory.get();
+    }
+
+    @Override
+    public GrimPlugin getPlugin() {
+        return plugin;
+    }
+
+    @Override
+    public PlatformPluginManager getPluginManager() {
+        return platformPluginManager;
+    }
+
+    @Override
+    public PlatformServer getPlatformServer() {
+        return platformServer;
+    }
+
+    @Override
+    public void registerAPIService() {
+        GrimAPIProvider.init(GrimAPI.INSTANCE.getExternalAPI());
+        Bukkit.getServicesManager().register(GrimAbstractAPI.class, GrimAPI.INSTANCE.getExternalAPI(), GrimACBukkitLoaderPlugin.LOADER, ServicePriority.Normal);
+    }
+
+    @Override
+    public @NotNull MessagePlaceHolderManager getMessagePlaceHolderManager() {
+        return messagePlaceHolderManager;
+    }
+
+    @Override
+    public PermissionRegistrationManager getPermissionManager() {
+        return bukkitPermissionRegistrationManager;
+    }
+
+    private PlatformScheduler createScheduler() {
+        return GrimAPI.INSTANCE.getPlatform() == Platform.FOLIA ? new FoliaPlatformScheduler() : new BukkitPlatformScheduler();
+    }
+
+    private CommandManager<Sender> createCommandManager() {
+        LegacyPaperCommandManager<Sender> manager = new LegacyPaperCommandManager<>(
+                this,
+                ExecutionCoordinator.simpleCoordinator(),
+                senderFactory.get()
+        );
+        if (manager.hasCapability(CloudBukkitCapabilities.NATIVE_BRIGADIER)) {
+            manager.registerBrigadier();
+        } else if (manager.hasCapability(CloudBukkitCapabilities.ASYNCHRONOUS_COMPLETION)) {
+            manager.registerAsynchronousCompletions();
+        }
+        return manager;
+    }
+
+    public BukkitSenderFactory getBukkitSenderFactory() {
+        return LOADER.senderFactory.get();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/command/BukkitPlayerSelectorAdapter.java

@@ -0,0 +1,37 @@
+package ac.grim.grimac.platform.bukkit.command;
+
+import ac.grim.grimac.GrimAPI;
+import ac.grim.grimac.platform.api.command.PlayerSelector;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.bukkit.sender.BukkitSenderFactory;
+
+import java.util.Collection;
+import java.util.Collections;
+
+public class BukkitPlayerSelectorAdapter implements PlayerSelector {
+    private final org.incendo.cloud.bukkit.data.SinglePlayerSelector bukkitSelector;
+
+    public BukkitPlayerSelectorAdapter(org.incendo.cloud.bukkit.data.SinglePlayerSelector bukkitSelector) {
+        this.bukkitSelector = bukkitSelector;
+    }
+
+    @Override
+    public boolean isSingle() {
+        return true;
+    }
+
+    @Override
+    public Sender getSinglePlayer() {
+        return ((BukkitSenderFactory) GrimAPI.INSTANCE.getSenderFactory()).map(bukkitSelector.single());
+    }
+
+    @Override
+    public Collection<Sender> getPlayers() {
+        return Collections.singletonList(((BukkitSenderFactory) GrimAPI.INSTANCE.getSenderFactory()).map(bukkitSelector.single()));
+    }
+
+    @Override
+    public String inputString() {
+        return bukkitSelector.inputString();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/command/BukkitPlayerSelectorParser.java

@@ -0,0 +1,28 @@
+package ac.grim.grimac.platform.bukkit.command;
+
+import ac.grim.grimac.platform.api.command.AbstractPlayerSelectorParser;
+import ac.grim.grimac.platform.api.command.PlayerSelector;
+import org.incendo.cloud.bukkit.parser.selector.SinglePlayerSelectorParser;
+import org.incendo.cloud.context.CommandContext;
+import org.incendo.cloud.parser.ParserDescriptor;
+
+import java.util.concurrent.CompletableFuture;
+
+public class BukkitPlayerSelectorParser<C> extends AbstractPlayerSelectorParser<C> {
+
+    @Override
+    public ParserDescriptor<C, PlayerSelector> descriptor() {
+        return super.createDescriptor();
+    }
+
+    @Override
+    protected ParserDescriptor<C, ?> getPlatformSpecificDescriptor() {
+        return SinglePlayerSelectorParser.singlePlayerSelectorParser();
+    }
+
+    @Override
+    protected CompletableFuture<PlayerSelector> adaptToCommonSelector(CommandContext<C> context, Object platformSpecificSelector) {
+        return CompletableFuture.completedFuture(new BukkitPlayerSelectorAdapter((org.incendo.cloud.bukkit.data.SinglePlayerSelector) platformSpecificSelector));
+    }
+
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/entity/BukkitGrimEntity.java

@@ -0,0 +1,79 @@
+package ac.grim.grimac.platform.bukkit.entity;
+
+import ac.grim.grimac.platform.api.entity.GrimEntity;
+import ac.grim.grimac.platform.api.world.PlatformWorld;
+import ac.grim.grimac.platform.bukkit.utils.convert.BukkitConversionUtils;
+import ac.grim.grimac.platform.bukkit.utils.reflection.PaperUtils;
+import ac.grim.grimac.platform.bukkit.world.BukkitPlatformWorld;
+import ac.grim.grimac.utils.math.Location;
+import com.google.common.base.Preconditions;
+import org.bukkit.entity.Entity;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+
+public class BukkitGrimEntity implements GrimEntity {
+
+    private final Entity entity;
+    private BukkitPlatformWorld bukkitPlatformWorld;
+
+    public BukkitGrimEntity(Entity entity) {
+        Preconditions.checkArgument(entity != null);
+        this.entity = entity;
+    }
+
+    public Entity getBukkitEntity() {
+        return this.entity;
+    }
+
+    @Override
+    public UUID getUniqueId() {
+        return entity.getUniqueId();
+    }
+
+    @Override
+    public boolean eject() {
+        return entity.eject();
+    }
+
+    @Override
+    public CompletableFuture<Boolean> teleportAsync(Location location) {
+        org.bukkit.Location bLoc = BukkitConversionUtils.toBukkitLocation(location);
+        return PaperUtils.teleportAsync(this.entity, bLoc);
+    }
+
+    @Override
+    @NonNull
+    public Entity getNative() {
+        return entity;
+    }
+
+    @Override
+    public boolean isDead() {
+        return this.entity.isDead();
+    }
+
+    // TODO replace with PlayerWorldChangeEvent listener instead of checking for equality for better performance
+    @Override
+    public PlatformWorld getWorld() {
+        if (bukkitPlatformWorld == null || !bukkitPlatformWorld.getBukkitWorld().equals(entity.getWorld())) {
+            bukkitPlatformWorld = new BukkitPlatformWorld(entity.getWorld());
+        }
+
+        return bukkitPlatformWorld;
+    }
+
+    @Override
+    public Location getLocation() {
+        org.bukkit.Location location = this.entity.getLocation();
+        return new Location(
+                this.getWorld(),
+                location.getX(),
+                location.getY(),
+                location.getZ(),
+                location.getYaw(),
+                location.getPitch()
+        );
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/events/PistonEvent.java

@@ -1,8 +1,8 @@
-package ac.grim.grimac.events.bukkit;
+package ac.grim.grimac.platform.bukkit.events;
 
 import ac.grim.grimac.GrimAPI;
+import ac.grim.grimac.platform.bukkit.utils.blockstate.BukkitBlockFaceHelper;
 import ac.grim.grimac.player.GrimPlayer;
-import ac.grim.grimac.utils.blockstate.helper.BlockFaceHelper;
 import ac.grim.grimac.utils.collisions.datatypes.SimpleCollisionBox;
 import ac.grim.grimac.utils.data.PistonData;
 import com.github.retrooper.packetevents.protocol.world.BlockFace;
@@ -57,7 +57,7 @@ public class PistonEvent implements Listener {
 
         for (GrimPlayer player : GrimAPI.INSTANCE.getPlayerDataManager().getEntries()) {
             if (player.compensatedWorld.isChunkLoaded(event.getBlock().getX() >> 4, event.getBlock().getZ() >> 4)) {
-                PistonData data = new PistonData(BlockFaceHelper.fromBukkitFace(event.getDirection()), boxes, player.lastTransactionSent.get(), true, hasSlimeBlock, hasHoneyBlock);
+                PistonData data = new PistonData(BukkitBlockFaceHelper.fromBukkitFace(event.getDirection()), boxes, player.lastTransactionSent.get(), true, hasSlimeBlock, hasHoneyBlock);
                 player.latencyUtils.addRealTimeTaskAsync(player.lastTransactionSent.get(), () -> player.compensatedWorld.activePistons.add(data));
             }
         }
@@ -79,7 +79,7 @@ public class PistonEvent implements Listener {
         boolean hasHoneyBlock = false;
 
         List<SimpleCollisionBox> boxes = new ArrayList<>();
-        BlockFace face = BlockFaceHelper.fromBukkitFace(event.getDirection());
+        BlockFace face = BukkitBlockFaceHelper.fromBukkitFace(event.getDirection());
 
         // The event was called without blocks and is therefore in the right direction
         if (event.getBlocks().isEmpty()) {
@@ -110,7 +110,7 @@ public class PistonEvent implements Listener {
 
         for (GrimPlayer player : GrimAPI.INSTANCE.getPlayerDataManager().getEntries()) {
             if (player.compensatedWorld.isChunkLoaded(event.getBlock().getX() >> 4, event.getBlock().getZ() >> 4)) {
-                PistonData data = new PistonData(BlockFaceHelper.fromBukkitFace(event.getDirection()), boxes, player.lastTransactionSent.get(), false, hasSlimeBlock, hasHoneyBlock);
+                PistonData data = new PistonData(BukkitBlockFaceHelper.fromBukkitFace(event.getDirection()), boxes, player.lastTransactionSent.get(), false, hasSlimeBlock, hasHoneyBlock);
                 player.latencyUtils.addRealTimeTaskAsync(player.lastTransactionSent.get(), () -> player.compensatedWorld.activePistons.add(data));
             }
         }

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/initables/BukkitBStats.java

@@ -0,0 +1,16 @@
+package ac.grim.grimac.platform.bukkit.initables;
+
+import ac.grim.grimac.manager.init.start.StartableInitable;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import io.github.retrooper.packetevents.bstats.bukkit.Metrics;
+
+public class BukkitBStats implements StartableInitable {
+    @Override
+    public void start() {
+        int pluginId = 12820; // <-- Replace with the id of your plugin!
+        try {
+            new Metrics(GrimACBukkitLoaderPlugin.LOADER, pluginId);
+        } catch (Exception ignored) {
+        }
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/initables/BukkitEventManager.java

@@ -0,0 +1,15 @@
+package ac.grim.grimac.platform.bukkit.initables;
+
+import ac.grim.grimac.manager.init.start.StartableInitable;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.platform.bukkit.events.PistonEvent;
+import ac.grim.grimac.utils.anticheat.LogUtil;
+import org.bukkit.Bukkit;
+
+public class BukkitEventManager implements StartableInitable {
+    public void start() {
+        LogUtil.info("Registering singular bukkit event... (PistonEvent)");
+
+        Bukkit.getPluginManager().registerEvents(new PistonEvent(), GrimACBukkitLoaderPlugin.LOADER);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/initables/BukkitTickEndEvent.java

@@ -1,7 +1,10 @@
-package ac.grim.grimac.manager.init.start;
+package ac.grim.grimac.platform.bukkit.initables;
 
 import ac.grim.grimac.GrimAPI;
-import ac.grim.grimac.manager.init.Initable;
+import ac.grim.grimac.manager.init.start.AbstractTickEndEvent;
+import ac.grim.grimac.platform.api.Platform;
+import ac.grim.grimac.platform.bukkit.player.BukkitPlatformPlayer;
+import ac.grim.grimac.platform.bukkit.utils.reflection.PaperUtils;
 import ac.grim.grimac.player.GrimPlayer;
 import ac.grim.grimac.utils.anticheat.LogUtil;
 import ac.grim.grimac.utils.lists.HookedListWrapper;
@@ -9,6 +12,9 @@ import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import com.github.retrooper.packetevents.util.reflection.Reflection;
 import io.github.retrooper.packetevents.util.SpigotReflectionUtil;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Listener;
 import sun.misc.Unsafe;
 
 import java.lang.reflect.Field;
@@ -17,26 +23,45 @@ import java.util.List;
 
 // Copied from: https://github.com/ThomasOM/Pledge/blob/master/src/main/java/dev/thomazz/pledge/inject/ServerInjector.java
 @SuppressWarnings(value = {"unchecked", "deprecated"})
-public class TickEndEvent implements Initable {
-    boolean hasTicked = true;
-
-    private static void tickRelMove() {
-        for (GrimPlayer player : GrimAPI.INSTANCE.getPlayerDataManager().getEntries()) {
-            if (player.disableGrim) continue; // If we aren't active don't spam extra transactions
-            player.checkManager.getEntityReplication().onEndOfTickEvent();
-        }
-    }
+public class BukkitTickEndEvent extends AbstractTickEndEvent implements Listener {
 
     @Override
     public void start() {
-        if (!GrimAPI.INSTANCE.getConfigManager().getConfig().getBooleanElse("Reach.enable-post-packet", false)) {
+        if (!super.shouldInjectEndTick()) {
             return;
         }
-
         if (PacketEvents.getAPI().getServerManager().getVersion().isNewerThan(ServerVersion.V_1_11_2) && !Boolean.getBoolean("paper.explicit-flush")) {
             LogUtil.warn("Reach.enable-post-packet=true but paper.explicit-flush=false, add \"-Dpaper.explicit-flush=true\" to your server's startup flags for fully functional extra reach accuracy.");
         }
+        // this is necessary for folia
+        if (GrimAPI.INSTANCE.getPlatform() == Platform.FOLIA) {
+            PaperUtils.registerTickEndEvent(this, this::tickAllFoliaPlayers);
+            return;
+        }
+        // if it fails to inject, try to use paper's event
+        if (!injectWithReflection() && !PaperUtils.registerTickEndEvent(this, this::tickAllPlayers)) {
+            LogUtil.error("Failed to inject into the end of tick event!");
+        }
+    }
 
+    private void tickAllPlayers() {
+        for (GrimPlayer player : GrimAPI.INSTANCE.getPlayerDataManager().getEntries()) {
+            if (player.disableGrim) continue;
+            super.onEndOfTick(player);
+        }
+    }
+
+    private void tickAllFoliaPlayers() {
+        for (GrimPlayer player : GrimAPI.INSTANCE.getPlayerDataManager().getEntries()) {
+            if (player.disableGrim) continue;
+            if (player.platformPlayer == null) continue;
+            Player p = ((BukkitPlatformPlayer) player.platformPlayer).getNative();
+            if (!Bukkit.isOwnedByCurrentRegion(p)) continue;
+            super.onEndOfTick(player);
+        }
+    }
+
+    private boolean injectWithReflection() {
         // Inject so we can add the final transaction pre-flush event
         try {
             Object connection = SpigotReflectionUtil.getMinecraftServerConnectionInstance();
@@ -52,8 +77,7 @@ public class TickEndEvent implements Initable {
             List<?> wrapper = Collections.synchronizedList(new HookedListWrapper<>(endOfTickObject) {
                 @Override
                 public void onIterator() {
-                    hasTicked = true;
-                    tickRelMove();
+                    tickAllPlayers();
                 }
             });
 
@@ -62,7 +86,9 @@ public class TickEndEvent implements Initable {
             Unsafe unsafe = (Unsafe) unsafeField.get(null);
             unsafe.putObject(connection, unsafe.objectFieldOffset(connectionsList), wrapper);
         } catch (NoSuchFieldException | IllegalAccessException e) {
-            e.printStackTrace();
+            LogUtil.exception("Failed to inject into the end of tick event via reflection", e);
+            return false;
         }
+        return true;
     }
 }

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/manager/BukkitItemResetHandler.java

@@ -0,0 +1,100 @@
+package ac.grim.grimac.platform.bukkit.manager;
+
+import ac.grim.grimac.platform.api.manager.ItemResetHandler;
+import ac.grim.grimac.platform.api.player.PlatformPlayer;
+import ac.grim.grimac.platform.bukkit.player.BukkitPlatformPlayer;
+import ac.grim.grimac.platform.bukkit.utils.reflection.PaperUtils;
+import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import lombok.SneakyThrows;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Method;
+
+public class BukkitItemResetHandler implements ItemResetHandler {
+    // resets item usage, then returns whether the player was using an item
+    private final @NotNull ItemUsageReset resetItemUsage = createItemUsageResetFunction();
+
+    @SneakyThrows
+    public void resetItemUsage(@Nullable PlatformPlayer player) {
+        if (player != null) {
+            resetItemUsage.accept(((BukkitPlatformPlayer) player).getNative());
+        }
+    }
+
+    @SneakyThrows
+    private @NotNull ItemUsageReset createItemUsageResetFunction() {
+        ServerVersion version = PacketEvents.getAPI().getServerManager().getVersion();
+        if (version.isNewerThan(ServerVersion.V_1_17) && PaperUtils.PAPER) {
+            if (version.isOlderThan(ServerVersion.V_1_19)) {
+                return LivingEntity::clearActiveItem;
+            }
+            Method setLivingEntityFlag = Class.forName(version.isOlderThan(ServerVersion.V_1_20_5) ? "net.minecraft.world.entity.EntityLiving" : "net.minecraft.world.entity.LivingEntity")
+                    .getDeclaredMethod(version.isOlderThan(ServerVersion.V_1_20_5) ? "c" : "setLivingEntityFlag", int.class, boolean.class);
+            Method getHandle = (version.isOlderThan(ServerVersion.V_1_20_5)
+                    ? Class.forName("org.bukkit.craftbukkit." + Bukkit.getServer().getClass().getPackageName().split("\\.")[3] + ".entity.CraftPlayer")
+                    : Class.forName("org.bukkit.craftbukkit.entity.CraftPlayer")
+            ).getMethod("getHandle");
+
+            setLivingEntityFlag.setAccessible(true);
+
+            return player -> {
+                // don't trigger gameevents
+                setLivingEntityFlag.invoke(getHandle.invoke(player), 1, false);
+                player.clearActiveItem();
+            };
+        }
+
+        if (version == ServerVersion.V_1_8_8) {
+            Class<?> EntityHuman = Class.forName("net.minecraft.server.v1_8_R3.EntityHuman");
+            Method getHandle = Class.forName("org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer").getMethod("getHandle");
+            Method clearActiveItem = EntityHuman.getMethod("bV");
+            Method isUsingItem = EntityHuman.getMethod("bS");
+
+            return player -> {
+                Object handle = getHandle.invoke(player);
+                clearActiveItem.invoke(handle);
+
+                // in 1.8 we need to resync item usage manually,
+                // only do so if the player was using an item
+                if ((boolean) isUsingItem.invoke(handle)) {
+                    player.updateInventory();
+                }
+            };
+        }
+
+
+
+        String nmsPackage = Bukkit.getServer().getClass().getPackageName().split("\\.")[3];
+        String livingEntityPackage = version.isNewerThan(ServerVersion.V_1_16_5) ? "net.minecraft.world.entity.EntityLiving" : "net.minecraft.server." + nmsPackage + ".EntityLiving";
+
+        Method getHandle = Class.forName("org.bukkit.craftbukkit." + nmsPackage + ".entity.CraftPlayer").getMethod("getHandle");
+        Method clearActiveItem = Class.forName(livingEntityPackage).getMethod(
+                switch (nmsPackage) {
+                    case "v1_9_R1" -> "cz";
+                    case "v1_9_R2" -> "cA";
+                    case "v1_10_R1" -> "cE";
+                    case "v1_11_R1" -> "cF";
+                    case "v1_12_R1" -> "cN";
+                    case "v1_13_R1", "v1_13_R2" -> "da";
+                    case "v1_14_R1" -> "dp";
+                    case "v1_15_R1" -> "dH";
+                    case "v1_16_R1", "v1_16_R2", "v1_16_R3", "v1_17_R1" -> "clearActiveItem";
+                    case "v1_18_R1" -> "eR";
+                    case "v1_18_R2" -> "eS";
+                    default ->
+                            throw new IllegalStateException("You are using an unsupported server version! (" + version.getReleaseName() + ")");
+                }
+        );
+
+        return player -> clearActiveItem.invoke(getHandle.invoke(player));
+    }
+
+    private interface ItemUsageReset {
+        void accept(@NotNull Player player) throws Throwable;
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/manager/BukkitMessagePlaceHolderManager.java

@@ -0,0 +1,28 @@
+package ac.grim.grimac.platform.bukkit.manager;
+
+import ac.grim.grimac.platform.api.manager.MessagePlaceHolderManager;
+import ac.grim.grimac.platform.api.player.PlatformPlayer;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.platform.bukkit.player.BukkitPlatformPlayer;
+import ac.grim.grimac.utils.anticheat.MessageUtil;
+import me.clip.placeholderapi.PlaceholderAPI;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.CommandSender;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class BukkitMessagePlaceHolderManager implements MessagePlaceHolderManager {
+    @Override
+    public @NonNull String replacePlaceholders(@Nullable Sender sender, @NonNull String string) {
+        if (!MessageUtil.hasPlaceholderAPI) return string;
+        CommandSender commandSender = sender == null ? null : GrimACBukkitLoaderPlugin.LOADER.getBukkitSenderFactory().unwrap(sender);
+        return PlaceholderAPI.setPlaceholders(sender instanceof OfflinePlayer ? (OfflinePlayer) commandSender : null, string);
+    }
+
+    @Override
+    public @NonNull String replacePlaceholders(@Nullable PlatformPlayer object, @NonNull String string) {
+        if (!MessageUtil.hasPlaceholderAPI) return string;
+        return PlaceholderAPI.setPlaceholders(((BukkitPlatformPlayer) object).getBukkitPlayer(), string);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/manager/BukkitParserDescriptorFactory.java

@@ -0,0 +1,17 @@
+package ac.grim.grimac.platform.bukkit.manager;
+
+import ac.grim.grimac.platform.api.command.PlayerSelector;
+import ac.grim.grimac.platform.api.manager.ParserDescriptorFactory;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.bukkit.command.BukkitPlayerSelectorParser;
+import org.incendo.cloud.parser.ParserDescriptor;
+
+public class BukkitParserDescriptorFactory implements ParserDescriptorFactory {
+
+    BukkitPlayerSelectorParser<Sender> bukkitPlayerSelectorParser = new BukkitPlayerSelectorParser<>();
+
+    @Override
+    public ParserDescriptor<Sender, PlayerSelector> getSinglePlayer() {
+        return bukkitPlayerSelectorParser.descriptor();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/manager/BukkitPermissionRegistrationManager.java

@@ -0,0 +1,33 @@
+package ac.grim.grimac.platform.bukkit.manager;
+
+import ac.grim.grimac.platform.api.manager.PermissionRegistrationManager;
+import ac.grim.grimac.platform.api.permissions.PermissionDefaultValue;
+import ac.grim.grimac.platform.bukkit.utils.convert.BukkitConversionUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.permissions.Permission;
+
+public class BukkitPermissionRegistrationManager implements PermissionRegistrationManager {
+    /**
+     * Registers a permission with the specified default value on Bukkit.
+     * This method is only called for dynamic permissions (e.g., check-specific permissions
+     * like "grim.exempt.checkname") that are generated at runtime. Most other static permissions
+     * (e.g., "grim.exempt", "grim.alerts.enable-on-join") are registered with their defaults
+     * in the `plugin.yml` file, which is defined in the Bukkit Gradle build script.
+     *
+     * <p>Dynamic permissions are registered here to ensure they are available for autocomplete
+     * and permission checks immediately on startup. If the permission already exists, its default
+     * value is updated to match the specified value.</p>
+     *
+     * @param s            The permission node to register (e.g., "grim.exempt.checkname").
+     * @param defaultValue The default value for the permission.
+     */
+    @Override
+    public void registerPermission(String s, PermissionDefaultValue defaultValue) {
+        final Permission permission = Bukkit.getPluginManager().getPermission(s);
+        if (permission == null) {
+            Bukkit.getPluginManager().addPermission(new Permission(s, BukkitConversionUtils.toBukkitPermissionDefault(defaultValue)));
+        } else {
+            permission.setDefault(BukkitConversionUtils.toBukkitPermissionDefault(defaultValue));
+        }
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/manager/BukkitPlatformPluginManager.java

@@ -0,0 +1,50 @@
+package ac.grim.grimac.platform.bukkit.manager;
+
+import ac.grim.grimac.api.event.EventBus;
+import ac.grim.grimac.api.event.GrimEvent;
+import ac.grim.grimac.api.event.OptimizedEventBus;
+import ac.grim.grimac.platform.api.PlatformPlugin;
+import ac.grim.grimac.platform.api.manager.PlatformPluginManager;
+import ac.grim.grimac.platform.bukkit.BukkitPlatformPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class BukkitPlatformPluginManager implements PlatformPluginManager {
+
+    private final EventBus eventBus = new OptimizedEventBus();
+
+    @Override
+    public void callEvent(GrimEvent event) {
+        eventBus.post(event);
+    }
+
+    @Override
+    public EventBus getEventBus() {
+        return this.eventBus;
+    }
+
+    @Override
+    public PlatformPlugin[] getPlugins() {
+        Plugin[] bukkitPlugins = Bukkit.getPluginManager().getPlugins();
+        PlatformPlugin[] plugins = new PlatformPlugin[bukkitPlugins.length];
+
+        for (int i = 0; i < bukkitPlugins.length; i++) {
+            plugins[i] = new BukkitPlatformPlugin(bukkitPlugins[i]);
+        }
+
+        return plugins;
+    }
+
+    @Override
+    public @Nullable PlatformPlugin getPlugin(String pluginName) {
+        Plugin bukkitPlugin = Bukkit.getPluginManager().getPlugin(pluginName);
+        return bukkitPlugin == null ? null : new BukkitPlatformPlugin(bukkitPlugin);
+    }
+
+    @Override
+    public boolean isPluginEnabled(String pluginName) {
+        PlatformPlugin plugin = getPlugin(pluginName);
+        return plugin != null && plugin.isEnabled();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/player/BukkitPlatformInventory.java

@@ -0,0 +1,66 @@
+package ac.grim.grimac.platform.bukkit.player;
+
+import ac.grim.grimac.platform.api.player.PlatformInventory;
+import com.github.retrooper.packetevents.protocol.item.ItemStack;
+import io.github.retrooper.packetevents.util.SpigotConversionUtil;
+import org.bukkit.entity.Player;
+
+public class BukkitPlatformInventory implements PlatformInventory {
+
+    private final Player bukkitPlayer;
+
+    public BukkitPlatformInventory(Player bukkitPlayer) {
+        this.bukkitPlayer = bukkitPlayer;
+    }
+
+    @Override
+    public ItemStack getItemInHand() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getItemInHand());
+    }
+
+    @Override
+    public ItemStack getItemInOffHand() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getItemInOffHand());
+    }
+
+    @Override
+    public ItemStack getStack(int bukkitSlot, int vanillaSlot) {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getItem(bukkitSlot));
+    }
+
+    @Override
+    public ItemStack getHelmet() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getHelmet());
+    }
+
+    @Override
+    public ItemStack getChestplate() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getHelmet());
+    }
+
+    @Override
+    public ItemStack getLeggings() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getLeggings());
+    }
+
+    @Override
+    public ItemStack getBoots() {
+        return SpigotConversionUtil.fromBukkitItemStack(bukkitPlayer.getInventory().getBoots());
+    }
+
+    @Override
+    public ItemStack[] getContents() {
+        org.bukkit.inventory.ItemStack[] bukkitItems = bukkitPlayer.getInventory().getContents();
+        ItemStack[] items = new ItemStack[bukkitItems.length];
+        for (int i = 0; i < bukkitItems.length; i++) {
+            if (bukkitItems[i] == null) continue;
+            items[i] = SpigotConversionUtil.fromBukkitItemStack(bukkitItems[i]);
+        }
+        return items;
+    }
+
+    @Override
+    public String getOpenInventoryKey() {
+        return bukkitPlayer.getOpenInventory().getType().toString();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/player/BukkitPlatformPlayer.java

@@ -0,0 +1,156 @@
+package ac.grim.grimac.platform.bukkit.player;
+
+import ac.grim.grimac.platform.api.entity.GrimEntity;
+import ac.grim.grimac.platform.api.player.PlatformInventory;
+import ac.grim.grimac.platform.api.player.PlatformPlayer;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.platform.bukkit.entity.BukkitGrimEntity;
+import ac.grim.grimac.platform.bukkit.utils.anticheat.MultiLibUtil;
+import ac.grim.grimac.platform.bukkit.utils.convert.BukkitConversionUtils;
+import ac.grim.grimac.platform.bukkit.utils.reflection.PaperUtils;
+import ac.grim.grimac.utils.math.Location;
+import com.github.retrooper.packetevents.protocol.player.GameMode;
+import com.github.retrooper.packetevents.util.Vector3d;
+import lombok.Getter;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import net.kyori.adventure.text.Component;
+import org.bukkit.World;
+import org.bukkit.entity.Player;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionDefault;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+
+public class BukkitPlatformPlayer extends BukkitGrimEntity implements PlatformPlayer {
+    private static final BukkitAudiences audiences = BukkitAudiences.create(GrimACBukkitLoaderPlugin.LOADER);
+
+    @Getter
+    private final Player bukkitPlayer;
+    private final PlatformInventory inventory;
+
+    public BukkitPlatformPlayer(Player bukkitPlayer) {
+        super(bukkitPlayer);
+        this.bukkitPlayer = bukkitPlayer;
+        this.inventory = new BukkitPlatformInventory(bukkitPlayer);
+    }
+
+    @Override
+    public void kickPlayer(String textReason) {
+        bukkitPlayer.kickPlayer(textReason);
+    }
+
+    @Override
+    public boolean hasPermission(String s) {
+        return bukkitPlayer.hasPermission(s);
+    }
+
+    @Override
+    public boolean hasPermission(String s, boolean defaultIfUnset) {
+        return this.bukkitPlayer.hasPermission(new Permission(s, defaultIfUnset ? PermissionDefault.TRUE : PermissionDefault.FALSE));
+    }
+
+    @Override
+    public boolean isSneaking() {
+        return bukkitPlayer.isSneaking();
+    }
+
+    @Override
+    public void setSneaking(boolean isSneaking) {
+        bukkitPlayer.setSneaking(isSneaking);
+    }
+
+    @Override
+    public void sendMessage(String message) {
+        bukkitPlayer.sendMessage(message);
+    }
+
+    @Override
+    public void sendMessage(Component message) {
+        audiences.player(bukkitPlayer).sendMessage(message);
+    }
+
+    @Override
+    public boolean isOnline() {
+        return bukkitPlayer.isOnline();
+    }
+
+    @Override
+    public String getName() {
+        return bukkitPlayer.getName();
+    }
+
+    @Override
+    public void updateInventory() {
+        bukkitPlayer.updateInventory();
+    }
+
+    @Override
+    public Vector3d getPosition() {
+        org.bukkit.Location location = this.bukkitPlayer.getLocation();
+        return new Vector3d(location.getX(), location.getY(), location.getZ());
+    }
+
+    @Override
+    public PlatformInventory getInventory() {
+        return inventory;
+    }
+
+    @Override
+    public GrimEntity getVehicle() {
+        return new BukkitGrimEntity(bukkitPlayer.getVehicle());
+    }
+
+    @Override
+    public GameMode getGameMode() {
+        return BukkitConversionUtils.fromBukkitGameMode(bukkitPlayer.getGameMode());
+    }
+
+    @Override
+    public void setGameMode(GameMode gameMode) {
+        bukkitPlayer.setGameMode(BukkitConversionUtils.toBukkitGameMode(gameMode));
+    }
+
+    public World getBukkitWorld() {
+        return bukkitPlayer.getWorld();
+    }
+
+    @Override
+    public UUID getUniqueId() {
+        return bukkitPlayer.getUniqueId();
+    }
+
+    @Override
+    public boolean eject() {
+        return bukkitPlayer.eject();
+    }
+
+    @Override
+    public CompletableFuture<Boolean> teleportAsync(Location location) {
+        org.bukkit.Location bLoc = BukkitConversionUtils.toBukkitLocation(location);
+        return PaperUtils.teleportAsync(this.bukkitPlayer, bLoc);
+    }
+
+    @Override
+    public boolean isExternalPlayer() {
+        return MultiLibUtil.isExternalPlayer(this.bukkitPlayer);
+    }
+
+    @Override
+    public void sendPluginMessage(String channelName, byte[] byteArray) {
+        this.bukkitPlayer.sendPluginMessage(GrimACBukkitLoaderPlugin.LOADER, channelName, byteArray);
+    }
+
+    @Override
+    public Sender getSender() {
+        return GrimACBukkitLoaderPlugin.LOADER.getBukkitSenderFactory().map(this.bukkitPlayer);
+    }
+
+    @Override
+    @NonNull
+    public Player getNative() {
+        return this.bukkitPlayer;
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/player/BukkitPlatformPlayerFactory.java

@@ -0,0 +1,47 @@
+package ac.grim.grimac.platform.bukkit.player;
+
+import ac.grim.grimac.platform.api.player.AbstractPlatformPlayerFactory;
+import ac.grim.grimac.platform.api.player.PlatformPlayer;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collection;
+import java.util.UUID;
+
+
+public class BukkitPlatformPlayerFactory extends AbstractPlatformPlayerFactory<Player> {
+    @Override
+    protected Player getNativePlayer(@NotNull UUID uuid) {
+        return Bukkit.getPlayer(uuid);
+    }
+
+    @Override
+    protected PlatformPlayer createPlatformPlayer(@NotNull Player nativePlayer) {
+        return new BukkitPlatformPlayer(nativePlayer);
+    }
+
+    @Override
+    protected boolean isNativePlayerType(@NotNull Object playerObject) {
+        return playerObject instanceof Player;
+    }
+
+    @Override
+    protected UUID getPlayerUUID(@NotNull Player nativePlayer) {
+        return nativePlayer.getUniqueId();
+    }
+
+    @Override
+    protected Class<Player> getNativePlayerClass() {
+        return Player.class;
+    }
+
+    // The cast is safe because Bukkit.getOnlinePlayers() is guaranteed to contain Player or its subtypes,
+    // and we're only reading from it.
+    @Override
+    @SuppressWarnings("unchecked")
+    protected Collection<Player> getNativeOnlinePlayers() {
+        // Cast Collection<? extends Player> to Collection<Player>
+        return (Collection<Player>) Bukkit.getOnlinePlayers();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitAsyncScheduler.java

@@ -0,0 +1,54 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.AsyncScheduler;
+import ac.grim.grimac.platform.api.scheduler.PlatformScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitScheduler;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.concurrent.TimeUnit;
+
+public class BukkitAsyncScheduler implements AsyncScheduler {
+
+    private final BukkitScheduler bukkitScheduler = Bukkit.getScheduler();
+
+    @Override
+    public TaskHandle runNow(@NotNull GrimPlugin plugin, @NotNull Runnable task) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskAsynchronously(GrimACBukkitLoaderPlugin.LOADER, task));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay, @NotNull TimeUnit timeUnit) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskLaterAsynchronously(GrimACBukkitLoaderPlugin.LOADER,
+                task,
+                PlatformScheduler.convertTimeToTicks(delay, timeUnit))
+        );
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay, long period, @NotNull TimeUnit timeUnit) {
+        return new BukkitTaskHandle(
+                bukkitScheduler.runTaskTimerAsynchronously(
+                        GrimACBukkitLoaderPlugin.LOADER,
+                        task,
+                        PlatformScheduler.convertTimeToTicks(delay, timeUnit),
+                        PlatformScheduler.convertTimeToTicks(period, timeUnit)
+                )
+        );
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new BukkitTaskHandle(
+                bukkitScheduler.runTaskTimerAsynchronously(GrimACBukkitLoaderPlugin.LOADER, task, initialDelayTicks, periodTicks)
+        );
+    }
+
+    @Override
+    public void cancel(@NotNull GrimPlugin plugin) {
+        bukkitScheduler.cancelTasks(GrimACBukkitLoaderPlugin.LOADER);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitEntityScheduler.java

@@ -0,0 +1,36 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.entity.GrimEntity;
+import ac.grim.grimac.platform.api.scheduler.EntityScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitScheduler;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class BukkitEntityScheduler implements EntityScheduler {
+
+    private final BukkitScheduler bukkitScheduler = Bukkit.getScheduler();
+
+    @Override
+    public void execute(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable run, @Nullable Runnable retired, long delay) {
+        bukkitScheduler.runTaskLater(GrimACBukkitLoaderPlugin.LOADER, run, delay);
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired) {
+        return new BukkitTaskHandle(bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, task));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired, long delayTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskLater(GrimACBukkitLoaderPlugin.LOADER, task, delayTicks));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired, long initialDelayTicks, long periodTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskTimer(GrimACBukkitLoaderPlugin.LOADER, task, initialDelayTicks, periodTicks));
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitGlobalRegionScheduler.java

@@ -0,0 +1,39 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.GlobalRegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitScheduler;
+import org.jetbrains.annotations.NotNull;
+
+public class BukkitGlobalRegionScheduler implements GlobalRegionScheduler {
+
+    private final BukkitScheduler bukkitScheduler = Bukkit.getScheduler();
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull Runnable run) {
+        bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, run);
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull Runnable task) {
+        return new BukkitTaskHandle(bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, task));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskLater(GrimACBukkitLoaderPlugin.LOADER, task, delay));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskTimer(GrimACBukkitLoaderPlugin.LOADER, task, initialDelayTicks, periodTicks));
+    }
+
+    @Override
+    public void cancel(@NotNull GrimPlugin plugin) {
+        bukkitScheduler.cancelTasks(GrimACBukkitLoaderPlugin.LOADER);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitPlatformScheduler.java

@@ -0,0 +1,37 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.platform.api.scheduler.AsyncScheduler;
+import ac.grim.grimac.platform.api.scheduler.EntityScheduler;
+import ac.grim.grimac.platform.api.scheduler.GlobalRegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.PlatformScheduler;
+import ac.grim.grimac.platform.api.scheduler.RegionScheduler;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.jetbrains.annotations.NotNull;
+
+public class BukkitPlatformScheduler implements PlatformScheduler {
+
+    private final BukkitAsyncScheduler bukkitAsyncScheduler = new BukkitAsyncScheduler();
+    private final BukkitGlobalRegionScheduler bukkitGlobalRegionScheduler = new BukkitGlobalRegionScheduler();
+    private final BukkitEntityScheduler bukkitEntityScheduler = new BukkitEntityScheduler();
+    private final BukkitRegionScheduler bukkitRegionScheduler = new BukkitRegionScheduler();
+
+    @Override
+    public @NonNull @NotNull AsyncScheduler getAsyncScheduler() {
+        return bukkitAsyncScheduler;
+    }
+
+    @Override
+    public @NonNull @NotNull GlobalRegionScheduler getGlobalRegionScheduler() {
+        return bukkitGlobalRegionScheduler;
+    }
+
+    @Override
+    public @NonNull @NotNull EntityScheduler getEntityScheduler() {
+        return bukkitEntityScheduler;
+    }
+
+    @Override
+    public @NonNull @NotNull RegionScheduler getRegionScheduler() {
+        return bukkitRegionScheduler;
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitRegionScheduler.java

@@ -0,0 +1,56 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.RegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.api.world.PlatformWorld;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.utils.math.Location;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitScheduler;
+import org.jetbrains.annotations.NotNull;
+
+public class BukkitRegionScheduler implements RegionScheduler {
+
+    private final BukkitScheduler bukkitScheduler = Bukkit.getScheduler();
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable run) {
+        bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, run);
+    }
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable run) {
+        bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, run);
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task) {
+        return new BukkitTaskHandle(bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, task));
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task) {
+        return new BukkitTaskHandle(bukkitScheduler.runTask(GrimACBukkitLoaderPlugin.LOADER, task));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task, long delayTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskLater(GrimACBukkitLoaderPlugin.LOADER, task, delayTicks));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task, long delayTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskLater(GrimACBukkitLoaderPlugin.LOADER, task, delayTicks));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskTimer(GrimACBukkitLoaderPlugin.LOADER, task, initialDelayTicks, periodTicks));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new BukkitTaskHandle(bukkitScheduler.runTaskTimer(GrimACBukkitLoaderPlugin.LOADER, task, initialDelayTicks, periodTicks));
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/bukkit/BukkitTaskHandle.java

@@ -0,0 +1,28 @@
+package ac.grim.grimac.platform.bukkit.scheduler.bukkit;
+
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import org.bukkit.scheduler.BukkitTask;
+
+public class BukkitTaskHandle implements TaskHandle {
+
+    private final BukkitTask bukkitTask;
+
+    public BukkitTaskHandle(BukkitTask bukkitTask) {
+        this.bukkitTask = bukkitTask;
+    }
+
+    @Override
+    public boolean isSync() {
+        return bukkitTask.isSync();
+    }
+
+    @Override
+    public boolean getCancelled() {
+        return bukkitTask.isCancelled();
+    }
+
+    @Override
+    public void cancel() {
+        bukkitTask.cancel();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaAsyncScheduler.java

@@ -0,0 +1,63 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.AsyncScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import org.bukkit.Bukkit;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.concurrent.TimeUnit;
+
+public class FoliaAsyncScheduler implements AsyncScheduler {
+
+    private final io.papermc.paper.threadedregions.scheduler.AsyncScheduler asyncScheduler = Bukkit.getAsyncScheduler();
+
+    @Override
+    public TaskHandle runNow(@NotNull GrimPlugin plugin, @NotNull Runnable task) {
+        return new FoliaTaskHandle(asyncScheduler.runNow(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run()));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay, @NotNull TimeUnit timeUnit) {
+        return new FoliaTaskHandle(
+                asyncScheduler.runDelayed(
+                        GrimACBukkitLoaderPlugin.LOADER,
+                        (ignored) -> task.run(),
+                        delay,
+                        timeUnit
+                )
+        );
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay, long period, @NotNull TimeUnit timeUnit) {
+        return new FoliaTaskHandle(
+                asyncScheduler.runAtFixedRate(
+                        GrimACBukkitLoaderPlugin.LOADER,
+                        (ignored) -> task.run(),
+                        delay,
+                        period,
+                        timeUnit
+                )
+        );
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new FoliaTaskHandle(
+                asyncScheduler.runAtFixedRate(
+                        GrimACBukkitLoaderPlugin.LOADER,
+                        (ignored) -> task.run(),
+                        initialDelayTicks * 50,
+                        periodTicks * 50,
+                        TimeUnit.MILLISECONDS
+                )
+        );
+    }
+
+    @Override
+    public void cancel(@NotNull GrimPlugin plugin) {
+        asyncScheduler.cancelTasks(GrimACBukkitLoaderPlugin.LOADER);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaEntityScheduler.java

@@ -0,0 +1,43 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.entity.GrimEntity;
+import ac.grim.grimac.platform.api.scheduler.EntityScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.platform.bukkit.entity.BukkitGrimEntity;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class FoliaEntityScheduler implements EntityScheduler {
+
+    @Override
+    public void execute(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable run, @Nullable Runnable retired, long delay) {
+        ((BukkitGrimEntity) entity).getBukkitEntity().getScheduler().execute(GrimACBukkitLoaderPlugin.LOADER, run, () -> {
+        }, delay);
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired) {
+        return new FoliaTaskHandle(
+                ((BukkitGrimEntity) entity).getBukkitEntity().getScheduler().run(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run(), () -> {
+                })
+        );
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired, long delayTicks) {
+        return new FoliaTaskHandle(
+                ((BukkitGrimEntity) entity).getBukkitEntity().getScheduler().runDelayed(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run(), () -> {
+                }, delayTicks)
+        );
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimEntity entity, @NotNull GrimPlugin plugin, @NotNull Runnable task, @Nullable Runnable retired, long initialDelayTicks, long periodTicks) {
+        return new FoliaTaskHandle(
+                ((BukkitGrimEntity) entity).getBukkitEntity().getScheduler().runAtFixedRate(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run(), () -> {
+                }, initialDelayTicks, periodTicks)
+        );
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaGlobalRegionScheduler.java

@@ -0,0 +1,38 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.GlobalRegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import org.bukkit.Bukkit;
+import org.jetbrains.annotations.NotNull;
+
+public class FoliaGlobalRegionScheduler implements GlobalRegionScheduler {
+
+    private final io.papermc.paper.threadedregions.scheduler.GlobalRegionScheduler globalRegionScheduler = Bukkit.getGlobalRegionScheduler();
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull Runnable run) {
+        globalRegionScheduler.execute(GrimACBukkitLoaderPlugin.LOADER, run);
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull Runnable task) {
+        return new FoliaTaskHandle(globalRegionScheduler.run(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run()));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Runnable task, long delay) {
+        return new FoliaTaskHandle(globalRegionScheduler.runDelayed(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run(), delay));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new FoliaTaskHandle(globalRegionScheduler.runAtFixedRate(GrimACBukkitLoaderPlugin.LOADER, (ignored) -> task.run(), initialDelayTicks, periodTicks));
+    }
+
+    @Override
+    public void cancel(@NotNull GrimPlugin plugin) {
+        globalRegionScheduler.cancelTasks(GrimACBukkitLoaderPlugin.LOADER);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaPlatformScheduler.java

@@ -0,0 +1,36 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.platform.api.scheduler.AsyncScheduler;
+import ac.grim.grimac.platform.api.scheduler.EntityScheduler;
+import ac.grim.grimac.platform.api.scheduler.GlobalRegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.PlatformScheduler;
+import ac.grim.grimac.platform.api.scheduler.RegionScheduler;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public class FoliaPlatformScheduler implements PlatformScheduler {
+
+    private final FoliaAsyncScheduler foliaAsyncScheduler = new FoliaAsyncScheduler();
+    private final FoliaGlobalRegionScheduler foliaGlobalRegionScheduler = new FoliaGlobalRegionScheduler();
+    private final FoliaEntityScheduler foliaEntityScheduler = new FoliaEntityScheduler();
+    private final FoliaRegionScheduler foliaRegionScheduler = new FoliaRegionScheduler();
+
+    @Override
+    public @NonNull AsyncScheduler getAsyncScheduler() {
+        return foliaAsyncScheduler;
+    }
+
+    @Override
+    public @NonNull GlobalRegionScheduler getGlobalRegionScheduler() {
+        return foliaGlobalRegionScheduler;
+    }
+
+    @Override
+    public @NonNull EntityScheduler getEntityScheduler() {
+        return foliaEntityScheduler;
+    }
+
+    @Override
+    public @NonNull RegionScheduler getRegionScheduler() {
+        return foliaRegionScheduler;
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaRegionScheduler.java

@@ -0,0 +1,59 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.platform.api.scheduler.RegionScheduler;
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import ac.grim.grimac.platform.api.world.PlatformWorld;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.platform.bukkit.world.BukkitPlatformWorld;
+import ac.grim.grimac.utils.math.Location;
+import org.bukkit.Bukkit;
+import org.jetbrains.annotations.NotNull;
+
+public class FoliaRegionScheduler implements RegionScheduler {
+
+    private final io.papermc.paper.threadedregions.scheduler.RegionScheduler regionScheduler = Bukkit.getRegionScheduler();
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable run) {
+        regionScheduler.execute(GrimACBukkitLoaderPlugin.LOADER, ((BukkitPlatformWorld) world).getBukkitWorld(), chunkX, chunkZ, run);
+    }
+
+    @Override
+    public void execute(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable run) {
+        execute(plugin, location.getWorld(), location.getBlockX() >> 4, location.getBlockZ() >> 4, run);
+
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task) {
+        return new FoliaTaskHandle(regionScheduler.run(GrimACBukkitLoaderPlugin.LOADER, ((BukkitPlatformWorld) world).getBukkitWorld(), chunkX, chunkZ, (ignored) -> task.run()));
+    }
+
+    @Override
+    public TaskHandle run(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task) {
+        return run(plugin, location.getWorld(), location.getBlockX() >> 4, location.getBlockZ() >> 4, task);
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task, long delayTicks) {
+        return new FoliaTaskHandle(regionScheduler.runDelayed(GrimACBukkitLoaderPlugin.LOADER,
+                ((BukkitPlatformWorld) world).getBukkitWorld(), chunkX, chunkZ, (ignored) -> task.run(), delayTicks));
+    }
+
+    @Override
+    public TaskHandle runDelayed(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task, long delayTicks) {
+        return runDelayed(plugin, location.getWorld(), location.getBlockX() >> 4, location.getBlockZ() >> 4, task, delayTicks);
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull PlatformWorld world, int chunkX, int chunkZ, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return new FoliaTaskHandle(regionScheduler.runAtFixedRate(GrimACBukkitLoaderPlugin.LOADER,
+                ((BukkitPlatformWorld) world).getBukkitWorld(), chunkX, chunkZ, (ignored) -> task.run(), initialDelayTicks, periodTicks));
+    }
+
+    @Override
+    public TaskHandle runAtFixedRate(@NotNull GrimPlugin plugin, @NotNull Location location, @NotNull Runnable task, long initialDelayTicks, long periodTicks) {
+        return runAtFixedRate(plugin, location.getWorld(), location.getBlockX() >> 4, location.getBlockZ() >> 4, task, initialDelayTicks, periodTicks);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/scheduler/folia/FoliaTaskHandle.java

@@ -0,0 +1,28 @@
+package ac.grim.grimac.platform.bukkit.scheduler.folia;
+
+import ac.grim.grimac.platform.api.scheduler.TaskHandle;
+import io.papermc.paper.threadedregions.scheduler.ScheduledTask;
+
+public class FoliaTaskHandle implements TaskHandle {
+
+    private final ScheduledTask task;
+
+    public FoliaTaskHandle(ScheduledTask task) {
+        this.task = task;
+    }
+
+    @Override
+    public boolean isSync() {
+        return false;
+    }
+
+    @Override
+    public boolean getCancelled() {
+        return task.isCancelled();
+    }
+
+    @Override
+    public void cancel() {
+        task.cancel();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/sender/BukkitSenderFactory.java

@@ -0,0 +1,89 @@
+package ac.grim.grimac.platform.bukkit.sender;
+
+import ac.grim.grimac.GrimAPI;
+import ac.grim.grimac.platform.api.sender.Sender;
+import ac.grim.grimac.platform.api.sender.SenderFactory;
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import net.kyori.adventure.text.Component;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.ConsoleCommandSender;
+import org.bukkit.command.RemoteConsoleCommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionDefault;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.incendo.cloud.SenderMapper;
+
+import java.util.UUID;
+
+public class BukkitSenderFactory extends SenderFactory<CommandSender> implements SenderMapper<CommandSender, Sender> {
+    private final BukkitAudiences audiences;
+
+    public BukkitSenderFactory() {
+        this.audiences = BukkitAudiences.create(GrimACBukkitLoaderPlugin.LOADER);
+    }
+
+    @Override
+    protected String getName(CommandSender sender) {
+        return sender instanceof Player ? sender.getName() : Sender.CONSOLE_NAME;
+    }
+
+    @Override
+    protected UUID getUniqueId(CommandSender sender) {
+        return sender instanceof Player ? ((Player) sender).getUniqueId() : Sender.CONSOLE_UUID;
+    }
+
+    @Override
+    protected void sendMessage(CommandSender sender, String message) {
+        sender.sendMessage(message);
+    }
+
+    @Override
+    protected void sendMessage(CommandSender sender, Component message) {
+        // we can safely send async for players and the console - otherwise, send it sync
+        if (sender instanceof Player || sender instanceof ConsoleCommandSender || sender instanceof RemoteConsoleCommandSender) {
+            this.audiences.sender(sender).sendMessage(message);
+        } else {
+            GrimAPI.INSTANCE.getScheduler().getGlobalRegionScheduler().run(
+                    GrimAPI.INSTANCE.getGrimPlugin(),
+                    () -> this.audiences.sender(sender).sendMessage(message)
+            );
+        }
+    }
+
+    @Override
+    protected boolean hasPermission(CommandSender sender, String node) {
+        return sender.hasPermission(node);
+    }
+
+    @Override
+    protected boolean hasPermission(CommandSender sender, String node, boolean defaultIfUnset) {
+        return sender.hasPermission(new Permission(node, defaultIfUnset ? PermissionDefault.TRUE : PermissionDefault.FALSE));
+    }
+
+    @Override
+    protected void performCommand(CommandSender sender, String command) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected boolean isConsole(CommandSender sender) {
+        return sender instanceof ConsoleCommandSender || sender instanceof RemoteConsoleCommandSender;
+    }
+
+    @Override
+    protected boolean isPlayer(CommandSender sender) {
+        return sender instanceof Player;
+    }
+
+    @Override
+    public @NonNull Sender map(@NonNull CommandSender base) {
+        return this.wrap(base);
+    }
+
+    @Override
+    public @NonNull CommandSender reverse(@NonNull Sender mapped) {
+        return this.unwrap(mapped);
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/utils/anticheat/MultiLibUtil.java

@@ -1,4 +1,4 @@
-package ac.grim.grimac.utils.anticheat;
+package ac.grim.grimac.platform.bukkit.utils.anticheat;
 
 import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
@@ -9,6 +9,8 @@ import java.lang.reflect.Method;
 public class MultiLibUtil {
 
     public final static Method externalPlayerMethod = getMethod(Player.class, "isExternalPlayer");
+    private static final boolean
+        IS_PRE_1_18 = PacketEvents.getAPI().getServerManager().getVersion().isOlderThan(ServerVersion.V_1_18);
 
     public static Method getMethod(Class<?> clazz, String methodName) {
         try {
@@ -20,7 +22,7 @@ public class MultiLibUtil {
 
     // TODO: cache external players for better performance, but this only matters for people using multi-lib
     public static boolean isExternalPlayer(Player player) {
-        if (externalPlayerMethod == null || (PacketEvents.getAPI().getServerManager().getVersion().isOlderThan(ServerVersion.V_1_18))) return false;
+        if (externalPlayerMethod == null || IS_PRE_1_18) return false;
         try {
             return (boolean) externalPlayerMethod.invoke(player);
         } catch (Exception e) {

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/utils/blockstate/BukkitBlockFaceHelper.java

@@ -0,0 +1,22 @@
+package ac.grim.grimac.platform.bukkit.utils.blockstate;
+
+import com.github.retrooper.packetevents.protocol.world.BlockFace;
+
+public class BukkitBlockFaceHelper {
+    /**
+     * For use with bukkit events only
+     * Grim is not meant to be restrained by bukkit!
+     */
+    @Deprecated
+    public static BlockFace fromBukkitFace(org.bukkit.block.BlockFace face) {
+        return switch (face) {
+            case NORTH -> BlockFace.NORTH;
+            case SOUTH -> BlockFace.SOUTH;
+            case WEST -> BlockFace.WEST;
+            case EAST -> BlockFace.EAST;
+            case UP -> BlockFace.UP;
+            case DOWN -> BlockFace.DOWN;
+            default -> BlockFace.OTHER;
+        };
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/utils/convert/BukkitConversionUtils.java

@@ -0,0 +1,62 @@
+package ac.grim.grimac.platform.bukkit.utils.convert;
+
+import ac.grim.grimac.platform.api.permissions.PermissionDefaultValue;
+import ac.grim.grimac.platform.bukkit.world.BukkitPlatformWorld;
+import ac.grim.grimac.utils.math.Location;
+import com.github.retrooper.packetevents.protocol.player.GameMode;
+
+public class BukkitConversionUtils {
+    public static org.bukkit.Location toBukkitLocation(Location location) {
+        return new org.bukkit.Location(((BukkitPlatformWorld) location.getWorld()).getBukkitWorld(), location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
+    }
+
+    public static GameMode fromBukkitGameMode(org.bukkit.GameMode gameMode) {
+        switch (gameMode) {
+            case CREATIVE:
+                return GameMode.CREATIVE;
+            case SURVIVAL:
+                return GameMode.SURVIVAL;
+            case ADVENTURE:
+                return GameMode.ADVENTURE;
+            case SPECTATOR:
+                return GameMode.SPECTATOR;
+            default:
+                throw new IllegalStateException();
+        }
+    }
+
+    public static org.bukkit.GameMode toBukkitGameMode(GameMode gameMode) {
+        switch (gameMode) {
+            case CREATIVE:
+                return org.bukkit.GameMode.CREATIVE;
+            case SURVIVAL:
+                return org.bukkit.GameMode.SURVIVAL;
+            case ADVENTURE:
+                return org.bukkit.GameMode.ADVENTURE;
+            case SPECTATOR:
+                return org.bukkit.GameMode.SPECTATOR;
+            default:
+                throw new IllegalStateException();
+        }
+    }
+
+    /**
+     * Converts this enum to a Bukkit PermissionDefault.
+     *
+     * @return The corresponding Bukkit PermissionDefault.
+     */
+    public static org.bukkit.permissions.PermissionDefault toBukkitPermissionDefault(PermissionDefaultValue permissionDefaultValue) {
+        switch (permissionDefaultValue) {
+            case TRUE:
+                return org.bukkit.permissions.PermissionDefault.TRUE;
+            case FALSE:
+                return org.bukkit.permissions.PermissionDefault.FALSE;
+            case OP:
+                return org.bukkit.permissions.PermissionDefault.OP;
+            case NOT_OP:
+                return org.bukkit.permissions.PermissionDefault.NOT_OP;
+            default:
+                throw new IllegalStateException();
+        }
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/utils/placeholder/PlaceholderAPIExpansion.java

@@ -1,4 +1,4 @@
-package ac.grim.grimac.manager.init.start;
+package ac.grim.grimac.platform.bukkit.utils.placeholder;
 
 import ac.grim.grimac.GrimAPI;
 import ac.grim.grimac.api.GrimUser;
@@ -14,13 +14,14 @@ import java.util.Set;
 import java.util.function.Function;
 
 public class PlaceholderAPIExpansion extends PlaceholderExpansion {
+
     @Override
     public @NotNull String getIdentifier() {
         return "grim";
     }
 
     public @NotNull String getAuthor() {
-        return String.join(", ", GrimAPI.INSTANCE.getPlugin().getDescription().getAuthors());
+        return String.join(", ", GrimAPI.INSTANCE.getGrimPlugin().getDescription().getAuthors());
     }
 
     @Override
@@ -28,6 +29,11 @@ public class PlaceholderAPIExpansion extends PlaceholderExpansion {
         return GrimAPI.INSTANCE.getExternalAPI().getGrimVersion();
     }
 
+    @Override
+    public boolean persist() {
+        return true;
+    }
+
     @Override
     public @NotNull List<String> getPlaceholders() {
         Set<String> placeholders = GrimAPI.INSTANCE.getExternalAPI().getStaticReplacements().keySet();
@@ -47,7 +53,7 @@ public class PlaceholderAPIExpansion extends PlaceholderExpansion {
         }
 
         if (offlinePlayer instanceof Player player) {
-            GrimPlayer grimPlayer = GrimAPI.INSTANCE.getPlayerDataManager().getPlayer(player);
+            GrimPlayer grimPlayer = GrimAPI.INSTANCE.getPlayerDataManager().getPlayer(player.getUniqueId());
             if (grimPlayer == null) return null;
 
             for (Map.Entry<String, Function<GrimUser, String>> entry : GrimAPI.INSTANCE.getExternalAPI().getVariableReplacements().entrySet()) {

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/utils/reflection/PaperUtils.java

@@ -0,0 +1,52 @@
+package ac.grim.grimac.platform.bukkit.utils.reflection;
+
+import ac.grim.grimac.platform.bukkit.GrimACBukkitLoaderPlugin;
+import ac.grim.grimac.utils.anticheat.LogUtil;
+import ac.grim.grimac.utils.reflection.ReflectionUtils;
+import org.bukkit.Location;
+import org.bukkit.entity.Entity;
+import org.bukkit.event.Event;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+
+import java.util.concurrent.CompletableFuture;
+
+public class PaperUtils {
+
+    public static final boolean PAPER;
+    public static final boolean TICK_END_EVENT;
+    public static final boolean ASYNC_TELEPORT;
+
+    static {
+        PAPER = ReflectionUtils.hasClass("com.destroystokyo.paper.PaperConfig") || ReflectionUtils.hasClass("io.papermc.paper.configuration.Configuration");
+        TICK_END_EVENT = ReflectionUtils.hasClass("com.destroystokyo.paper.event.server.ServerTickEndEvent");
+        ASYNC_TELEPORT = ReflectionUtils.hasMethod(Entity.class, "teleportAsync", org.bukkit.Location.class);
+    }
+
+    public static CompletableFuture<Boolean> teleportAsync(final Entity entity, final Location location) {
+        if (PAPER) {
+            return entity.teleportAsync(location);
+        } else {
+            return CompletableFuture.completedFuture(entity.teleport(location));
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    public static boolean registerTickEndEvent(Listener listener, Runnable runnable) {
+        if (TICK_END_EVENT) {
+            try {
+                Class<?> clazz = ReflectionUtils.getClass("com.destroystokyo.paper.event.server.ServerTickEndEvent");
+                if (clazz == null) return false;
+                GrimACBukkitLoaderPlugin.LOADER.getServer().getPluginManager().registerEvent((Class<? extends Event>) clazz,
+                        listener,
+                        EventPriority.NORMAL,
+                        (l, event) -> runnable.run(), GrimACBukkitLoaderPlugin.LOADER);
+                return true;
+            } catch (Exception e) {
+                LogUtil.exception("Failed to register tick end event", e);
+            }
+        }
+        return false;
+    }
+
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/world/BukkitPlatformChunk.java

@@ -0,0 +1,31 @@
+package ac.grim.grimac.platform.bukkit.world;
+
+import ac.grim.grimac.platform.api.world.PlatformChunk;
+import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.world.states.WrappedBlockState;
+import org.bukkit.Chunk;
+import org.bukkit.block.Block;
+import org.bukkit.block.data.BlockData;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashMap;
+
+public class BukkitPlatformChunk implements PlatformChunk {
+    private static final HashMap<BlockData, Integer> blockDataToId = new HashMap<>();
+    private static final boolean isFlat = PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_13);
+    private final Chunk chunk;
+
+    public BukkitPlatformChunk(@NotNull Chunk chunkAt) {
+        this.chunk = chunkAt;
+    }
+
+    @Override
+    public int getBlockID(int x, int y, int z) {
+        Block block = chunk.getBlock(x, y, z);
+
+        return isFlat // Cache blockDataToID because Strings are expensive
+                ? blockDataToId.computeIfAbsent(block.getBlockData(), data -> WrappedBlockState.getByString(PacketEvents.getAPI().getServerManager().getVersion().toClientVersion(), data.getAsString(false)).getGlobalId())
+                : (block.getType().getId() << 4) | block.getData();
+    }
+}

bukkit/src/main/java/ac/grim/grimac/platform/bukkit/world/BukkitPlatformWorld.java

@@ -0,0 +1,53 @@
+package ac.grim.grimac.platform.bukkit.world;
+
+import ac.grim.grimac.platform.api.world.PlatformChunk;
+import ac.grim.grimac.platform.api.world.PlatformWorld;
+import com.github.retrooper.packetevents.protocol.world.states.WrappedBlockState;
+import io.github.retrooper.packetevents.util.SpigotConversionUtil;
+import lombok.Getter;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+
+@Getter
+public class BukkitPlatformWorld implements PlatformWorld {
+
+    private final World bukkitWorld;
+
+    public BukkitPlatformWorld(@NotNull World world) {
+        this.bukkitWorld = world;
+    }
+
+    @Override
+    public boolean isChunkLoaded(int chunkX, int chunkZ) {
+        return bukkitWorld.isChunkLoaded(chunkX, chunkZ);
+    }
+
+    @Override
+    public WrappedBlockState getBlockAt(int x, int y, int z) {
+        return SpigotConversionUtil.fromBukkitBlockData(bukkitWorld.getBlockAt(x, y, z).getBlockData());
+    }
+
+    @Override
+    public String getName() {
+        return bukkitWorld.getName();
+    }
+
+    @Override
+    public @Nullable UUID getUID() {
+        return this.bukkitWorld.getUID();
+    }
+
+    @Override
+    public PlatformChunk getChunkAt(int currChunkX, int currChunkZ) {
+        return new BukkitPlatformChunk(bukkitWorld.getChunkAt(currChunkX, currChunkZ));
+    }
+
+    @Override
+    public boolean isLoaded() {
+        return Bukkit.getWorld(bukkitWorld.getUID()) != null;
+    }
+}

common/build.gradle.kts

@@ -0,0 +1,54 @@
+plugins {
+    `maven-publish`
+    grim.`base-conventions`
+}
+
+repositories {
+    mavenLocal()
+    maven {
+        name = "papermc"
+        url = uri("https://repo.papermc.io/repository/maven-public/")
+    }
+    maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/") // Spigot
+    maven("https://jitpack.io/") { // Grim API
+        content {
+            includeGroup("com.github.grimanticheat")
+        }
+    }
+    maven("https://repo.viaversion.com") // ViaVersion
+    maven("https://nexus.scarsz.me/content/repositories/releases") // Configuralize
+    maven("https://repo.opencollab.dev/maven-snapshots/") // Floodgate
+    maven("https://repo.opencollab.dev/maven-releases/") // Cumulus (for Floodgate)
+    maven("https://repo.codemc.io/repository/maven-releases/") // PacketEvents
+    maven("https://repo.codemc.io/repository/maven-snapshots/")
+    maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
+    mavenCentral()
+    // FastUtil, Discord-Webhooks
+}
+
+dependencies {
+    api(libs.packetevents.api)
+    api(libs.cloud.core)
+    api("org.incendo:cloud-processors-requirements:1.0.0-rc.1")
+    api("github.scarsz:configuralize:1.4.1:slim") {
+        exclude(group = "org.yaml", module = "snakeyaml")
+    }
+    // Bump snakeyaml (transitive dep of configuralize) 1.29 -> 2.2 for geyser-fabric
+    api("org.yaml:snakeyaml:2.2")
+    api(libs.discord.webhooks)
+    api(libs.fastutil)
+    api(libs.adventure.text.minimessage)
+    api(libs.jetbrains.annotations)
+
+    // Used for local testing:
+    // api("ac.grim.grimac:GrimAPI:1.0")
+    api("com.github.grimanticheat:grimapi:8507e14a73")
+
+    compileOnly(libs.floodgate.api)
+    compileOnly(libs.via.version.api)
+    compileOnly(libs.netty)
+}
+
+publishing.publications.create<MavenPublication>("maven") {
+    from(components["java"])
+}

common/src/main/java/ac/grim/grimac/GrimAPI.java

@@ -0,0 +1,141 @@
+package ac.grim.grimac;
+
+import ac.grim.grimac.api.plugin.GrimPlugin;
+import ac.grim.grimac.manager.AlertManagerImpl;
+import ac.grim.grimac.manager.DiscordManager;
+import ac.grim.grimac.manager.InitManager;
+import ac.grim.grimac.manager.SpectateManager;
+import ac.grim.grimac.manager.TickManager;
+import ac.grim.grimac.manager.config.BaseConfigManager;
+import ac.grim.grimac.manager.init.Initable;
+import ac.grim.grimac.platform.api.Platform;
+import ac.grim.grimac.platform.api.PlatformLoader;
+import ac.grim.grimac.platform.api.PlatformServer;
+import ac.grim.grimac.platform.api.manager.ItemResetHandler;
+import ac.grim.grimac.platform.api.manager.MessagePlaceHolderManager;
+import ac.grim.grimac.platform.api.manager.ParserDescriptorFactory;
+import ac.grim.grimac.platform.api.manager.PermissionRegistrationManager;
+import ac.grim.grimac.platform.api.manager.PlatformPluginManager;
+import ac.grim.grimac.platform.api.player.PlatformPlayerFactory;
+import ac.grim.grimac.platform.api.scheduler.PlatformScheduler;
+import ac.grim.grimac.platform.api.sender.SenderFactory;
+import ac.grim.grimac.utils.anticheat.PlayerDataManager;
+import ac.grim.grimac.utils.reflection.ReflectionUtils;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+@Getter
+public final class GrimAPI {
+    public static final GrimAPI INSTANCE = new GrimAPI();
+
+    private final Platform platform = detectPlatform();
+    private final BaseConfigManager configManager;
+    private final AlertManagerImpl alertManager;
+    private final SpectateManager spectateManager;
+    private final DiscordManager discordManager;
+    private final PlayerDataManager playerDataManager;
+    private final TickManager tickManager;
+    private final GrimExternalAPI externalAPI;
+    private PlatformLoader loader;
+    private InitManager initManager;
+    private boolean initialized = false;
+
+    private GrimAPI() {
+        this.configManager = new BaseConfigManager();
+        this.alertManager = new AlertManagerImpl();
+        this.spectateManager = new SpectateManager();
+        this.discordManager = new DiscordManager();
+        this.playerDataManager = new PlayerDataManager();
+        this.tickManager = new TickManager();
+        this.externalAPI = new GrimExternalAPI(this);
+    }
+
+    private static Platform detectPlatform() {
+        final Map<String, Platform> platforms = Collections.unmodifiableMap(new HashMap<>() {{
+            put("io.papermc.paper.threadedregions.RegionizedServer", Platform.FOLIA);
+            put("org.bukkit.Bukkit", Platform.BUKKIT);
+            put("net.fabricmc.loader.api.FabricLoader", Platform.FABRIC);
+        }});
+
+        return platforms.entrySet().stream()
+                .filter(entry -> ReflectionUtils.hasClass(entry.getKey()))
+                .map(Map.Entry::getValue)
+                .findFirst()
+                .orElseThrow(() -> new IllegalStateException("Unknown platform!"));
+    }
+
+    public void load(PlatformLoader platformLoader, Initable... platformSpecificInitables) {
+        this.loader = platformLoader;
+        this.initManager = new InitManager(loader.getPacketEvents(), loader::getCommandManager, platformSpecificInitables);
+        this.initManager.load();
+        this.initialized = true;
+    }
+
+    public void start() {
+        checkInitialized();
+        initManager.start();
+    }
+
+    public void stop() {
+        checkInitialized();
+        initManager.stop();
+    }
+
+    public PlatformScheduler getScheduler() {
+        return loader.getScheduler();
+    }
+
+    public PlatformPlayerFactory getPlatformPlayerFactory() {
+        return loader.getPlatformPlayerFactory();
+    }
+
+    public ParserDescriptorFactory getParserDescriptors() {
+        return loader.getParserDescriptorFactory();
+    }
+
+    public InitManager getInitManager() {
+        return initManager;
+    }
+
+    public GrimPlugin getGrimPlugin() {
+        return loader.getPlugin();
+    }
+
+    public SenderFactory<?> getSenderFactory() {
+        return loader.getSenderFactory();
+    }
+
+    public ItemResetHandler getItemResetHandler() {
+        return loader.getItemResetHandler();
+    }
+
+    public PlatformPluginManager getPluginManager() {
+        return loader.getPluginManager();
+    }
+
+    public PlatformServer getPlatformServer() {
+        return loader.getPlatformServer();
+    }
+
+    public @NotNull MessagePlaceHolderManager getMessagePlaceHolderManager() {
+        return loader.getMessagePlaceHolderManager();
+    }
+
+    private void checkInitialized() {
+        if (!initialized) {
+            throw new IllegalStateException("GrimAPI has not been initialized!");
+        }
+    }
+
+    public PermissionRegistrationManager getPermissionManager() {
+        return loader.getPermissionManager();
+    }
+
+    public Platform getPlatform() {
+        return platform;
+    }
+}

common/src/main/java/ac/grim/grimac/GrimExternalAPI.java

@@ -1,24 +1,21 @@
 package ac.grim.grimac;
 
 import ac.grim.grimac.api.GrimAbstractAPI;
+import ac.grim.grimac.api.plugin.GrimPluginDescription;
 import ac.grim.grimac.api.GrimUser;
 import ac.grim.grimac.api.alerts.AlertManager;
 import ac.grim.grimac.api.config.ConfigManager;
-import ac.grim.grimac.api.events.GrimReloadEvent;
+import ac.grim.grimac.api.event.EventBus;
+import ac.grim.grimac.api.event.events.GrimReloadEvent;
 import ac.grim.grimac.manager.config.ConfigManagerFileImpl;
-import ac.grim.grimac.manager.init.Initable;
+import ac.grim.grimac.manager.init.start.StartableInitable;
 import ac.grim.grimac.player.GrimPlayer;
 import ac.grim.grimac.utils.anticheat.LogUtil;
+import ac.grim.grimac.utils.chat.ChatUtil;
 import ac.grim.grimac.utils.common.ConfigReloadObserver;
 import com.github.retrooper.packetevents.netty.channel.ChannelHelper;
-import io.github.retrooper.packetevents.util.SpigotReflectionUtil;
-import io.github.retrooper.packetevents.util.folia.FoliaScheduler;
 import lombok.Getter;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.PluginDescriptionFile;
-import org.bukkit.plugin.ServicePriority;
+import org.checkerframework.checker.nullness.qual.NonNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Map;
@@ -29,33 +26,32 @@ import java.util.function.Function;
 
 //This is used for grim's external API. It has its own class just for organization.
 
-public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, Initable {
+public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, StartableInitable {
 
     private final GrimAPI api;
+    @Getter
+    private final Map<String, Function<GrimUser, String>> variableReplacements = new ConcurrentHashMap<>();
+    @Getter
+    private final Map<String, String> staticReplacements = new ConcurrentHashMap<>();
+    private final Map<String, Function<Object, Object>> functions = new ConcurrentHashMap<>();
+    private final ConfigManagerFileImpl configManagerFile = new ConfigManagerFileImpl();
+    private ConfigManager configManager = null;
+    private boolean started = false;
 
     public GrimExternalAPI(GrimAPI api) {
         this.api = api;
     }
 
-    @Nullable
     @Override
-    public GrimUser getGrimUser(Player player) {
-        return api.getPlayerDataManager().getPlayer(player);
+    public @NonNull EventBus getEventBus() {
+        return api.getPluginManager().getEventBus();
     }
 
     @Override
     public @Nullable GrimUser getGrimUser(UUID uuid) {
-        Player player = Bukkit.getPlayer(uuid);
-        if (player == null) return null;
-        return getGrimUser(player);
+        return api.getPlayerDataManager().getPlayer(uuid);
     }
 
-    @Getter
-    private final Map<String, Function<GrimUser, String>> variableReplacements = new ConcurrentHashMap<>();
-
-    @Getter
-    private final Map<String, String> staticReplacements = new ConcurrentHashMap<>();
-
     public String replaceVariables(GrimUser user, String content) {
         for (Map.Entry<String, String> entry : staticReplacements.entrySet()) {
             content = content.replace(entry.getKey(), entry.getValue());
@@ -86,12 +82,10 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
 
     @Override
     public String getGrimVersion() {
-        PluginDescriptionFile description = GrimAPI.INSTANCE.getPlugin().getDescription();
+        GrimPluginDescription description = GrimAPI.INSTANCE.getGrimPlugin().getDescription();
         return description.getVersion();
     }
 
-    private final Map<String, Function<Object, Object>> functions = new ConcurrentHashMap<>();
-
     @Override
     public void registerFunction(String key, Function<Object, Object> function) {
         if (function == null) {
@@ -126,14 +120,10 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
         return GrimAPI.INSTANCE.getTickManager().currentTick;
     }
 
-    private ConfigManager configManager = null;
-    private final ConfigManagerFileImpl configManagerFile = new ConfigManagerFileImpl();
-    private boolean started = false;
-
     // on load, load the config & register the service
     public void load() {
         reload(configManagerFile);
-        Bukkit.getServicesManager().register(GrimAbstractAPI.class, this, GrimAPI.INSTANCE.getPlugin(), ServicePriority.Normal);
+        api.getLoader().registerAPIService();
     }
 
     // handles any config loading that's needed to be done after load
@@ -150,8 +140,8 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
     @Override
     public void reload(ConfigManager config) {
         if (config.isLoadedAsync() && started) {
-            FoliaScheduler.getAsyncScheduler().runNow(GrimAPI.INSTANCE.getPlugin(),
-                    o -> successfulReload(config));
+            GrimAPI.INSTANCE.getScheduler().getAsyncScheduler().runNow(GrimAPI.INSTANCE.getGrimPlugin(),
+                    () -> successfulReload(config));
         } else {
             successfulReload(config);
         }
@@ -161,8 +151,8 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
     public CompletableFuture<Boolean> reloadAsync(ConfigManager config) {
         if (config.isLoadedAsync() && started) {
             CompletableFuture<Boolean> future = new CompletableFuture<>();
-            FoliaScheduler.getAsyncScheduler().runNow(GrimAPI.INSTANCE.getPlugin(),
-                    o -> future.complete(successfulReload(config)));
+            GrimAPI.INSTANCE.getScheduler().getAsyncScheduler().runNow(GrimAPI.INSTANCE.getGrimPlugin(),
+                    () -> future.complete(successfulReload(config)));
             return future;
         }
         return CompletableFuture.completedFuture(successfulReload(config));
@@ -174,14 +164,16 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
             GrimAPI.INSTANCE.getConfigManager().load(config);
             if (started) GrimAPI.INSTANCE.getConfigManager().start();
             onReload(config);
-            if (started) FoliaScheduler.getAsyncScheduler().runNow(GrimAPI.INSTANCE.getPlugin(),
-                    o -> Bukkit.getPluginManager().callEvent(new GrimReloadEvent(true)));
+            if (started)
+                GrimAPI.INSTANCE.getScheduler().getAsyncScheduler().runNow(GrimAPI.INSTANCE.getGrimPlugin(),
+                        () -> GrimAPI.INSTANCE.getPluginManager().callEvent(new GrimReloadEvent(true)));
             return true;
         } catch (Exception e) {
             e.printStackTrace();
         }
-        if (started) FoliaScheduler.getAsyncScheduler().runNow(GrimAPI.INSTANCE.getPlugin(),
-                o -> Bukkit.getPluginManager().callEvent(new GrimReloadEvent(false)));
+        if (started)
+            GrimAPI.INSTANCE.getScheduler().getAsyncScheduler().runNow(GrimAPI.INSTANCE.getGrimPlugin(),
+                    () -> GrimAPI.INSTANCE.getPluginManager().callEvent(new GrimReloadEvent(false)));
         return false;
     }
 
@@ -196,8 +188,8 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
         // Update variables
         updateVariables();
         // Restart
-        GrimAPI.INSTANCE.getDiscordManager().start();
-        GrimAPI.INSTANCE.getSpectateManager().start();
+        GrimAPI.INSTANCE.getDiscordManager().reload();
+        GrimAPI.INSTANCE.getSpectateManager().reload();
         // Don't reload players if the plugin hasn't started yet
         if (!started) return;
         // Reload checks for all players
@@ -217,11 +209,10 @@ public class GrimExternalAPI implements GrimAbstractAPI, ConfigReloadObserver, I
         variableReplacements.putIfAbsent("%h_sensitivity%", user -> ((int) Math.round(user.getHorizontalSensitivity() * 200)) + "");
         variableReplacements.putIfAbsent("%v_sensitivity%", user -> ((int) Math.round(user.getVerticalSensitivity() * 200)) + "");
         variableReplacements.putIfAbsent("%fast_math%", user -> !user.isVanillaMath() + "");
-        variableReplacements.putIfAbsent("%tps%", user -> String.format("%.2f", SpigotReflectionUtil.getTPS()));
+        variableReplacements.putIfAbsent("%tps%", user -> String.format("%.2f", GrimAPI.INSTANCE.getPlatformServer().getTPS()));
         variableReplacements.putIfAbsent("%version%", GrimUser::getVersionName);
         // static variables
-        staticReplacements.put("%prefix%", ChatColor.translateAlternateColorCodes('&', GrimAPI.INSTANCE.getConfigManager().getPrefix()));
+        staticReplacements.put("%prefix%", ChatUtil.translateAlternateColorCodes('&', GrimAPI.INSTANCE.getConfigManager().getPrefix()));
         staticReplacements.putIfAbsent("%grim_version%", getGrimVersion());
     }
-
 }

common/src/main/java/ac/grim/grimac/checks/Check.java

@@ -3,21 +3,22 @@ package ac.grim.grimac.checks;
 import ac.grim.grimac.GrimAPI;
 import ac.grim.grimac.api.AbstractCheck;
 import ac.grim.grimac.api.config.ConfigManager;
-import ac.grim.grimac.api.events.FlagEvent;
+import ac.grim.grimac.api.event.events.FlagEvent;
 import ac.grim.grimac.player.GrimPlayer;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientPlayerFlying;
-import io.github.retrooper.packetevents.util.folia.FoliaScheduler;
+import com.google.common.base.Preconditions;
 import lombok.Getter;
 import lombok.Setter;
-import org.bukkit.Bukkit;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.jetbrains.annotations.NotNull;
 
 // Class from https://github.com/Tecnio/AntiCheatBase/blob/master/src/main/java/me/tecnio/anticheat/check/Check.java
 @Getter
 public class Check extends GrimProcessor implements AbstractCheck {
-    protected final GrimPlayer player;
+    protected @NonNull final GrimPlayer player;
 
     public double violations;
     private double decay;
@@ -30,14 +31,15 @@ public class Check extends GrimProcessor implements AbstractCheck {
     private String description;
 
     private boolean experimental;
-    @Setter
-    private boolean isEnabled;
+    private @Setter boolean isEnabled;
 
     private boolean exemptPermission;
     private boolean noSetbackPermission;
     private boolean noModifyPacketPermission;
+    private long lastViolationTime;
 
-    public Check(final GrimPlayer player) {
+    public Check(final @NotNull GrimPlayer player) {
+        Preconditions.checkArgument(player != null);
         this.player = player;
 
         final CheckData checkData = this.getClass().getAnnotation(CheckData.class);
@@ -62,15 +64,15 @@ public class Check extends GrimProcessor implements AbstractCheck {
     }
 
     public void updatePermissions() {
-        if (player.bukkitPlayer == null || checkName == null) return;
-        FoliaScheduler.getEntityScheduler().run(
-                player.bukkitPlayer,
-                GrimAPI.INSTANCE.getPlugin(),
-                t -> {
-                    final String id = checkName.toLowerCase();
-                    exemptPermission = player.bukkitPlayer.hasPermission("grim.exempt." + id);
-                    noSetbackPermission = player.bukkitPlayer.hasPermission("grim.nosetback." + id);
-                    noModifyPacketPermission = player.bukkitPlayer.hasPermission("grim.nomodifypacket." + id);
+        if (player.platformPlayer == null || configName == null) return;
+        GrimAPI.INSTANCE.getScheduler().getEntityScheduler().run(
+                player.platformPlayer,
+                GrimAPI.INSTANCE.getGrimPlugin(),
+                () -> {
+                    final String id = configName.toLowerCase();
+                    exemptPermission = player.platformPlayer.hasPermission("grim.exempt." + id);
+                    noSetbackPermission = player.platformPlayer.hasPermission("grim.nosetback." + id);
+                    noModifyPacketPermission = player.platformPlayer.hasPermission("grim.nomodifypacket." + id);
                 },
                 () -> {}
         );
@@ -92,14 +94,12 @@ public class Check extends GrimProcessor implements AbstractCheck {
         return flag("");
     }
 
-    private long lastViolationTime;
-
     public final boolean flag(String verbose) {
         if (player.disableGrim || (experimental && !player.isExperimentalChecks()) || exemptPermission)
             return false; // Avoid calling event if disabled
 
         FlagEvent event = new FlagEvent(player, this, verbose);
-        Bukkit.getPluginManager().callEvent(event);
+        GrimAPI.INSTANCE.getPluginManager().callEvent(event);
         if (event.isCancelled()) return false;
 
         player.punishmentManager.handleViolation(this);
@@ -116,6 +116,18 @@ public class Check extends GrimProcessor implements AbstractCheck {
         return false;
     }
 
+    public final boolean flagAndAlertWithSetback() {
+        return flagAndAlertWithSetback("");
+    }
+
+    public final boolean flagAndAlertWithSetback(String verbose) {
+        if (flagAndAlert(verbose)) {
+            setbackIfAboveSetbackVL();
+            return true;
+        }
+        return false;
+    }
+
     public final void reward() {
         violations = Math.max(0, violations - decay);
     }

common/src/main/java/ac/grim/grimac/checks/impl/aim/AimDuplicateLook.java

@@ -8,15 +8,15 @@ import ac.grim.grimac.utils.anticheat.update.RotationUpdate;
 
 @CheckData(name = "AimDuplicateLook")
 public class AimDuplicateLook extends Check implements RotationCheck {
+    boolean exempt = false;
+
     public AimDuplicateLook(GrimPlayer playerData) {
         super(playerData);
     }
 
-    boolean exempt = false;
-
     @Override
     public void process(final RotationUpdate rotationUpdate) {
-        if (player.packetStateData.lastPacketWasTeleport || player.packetStateData.lastPacketWasOnePointSeventeenDuplicate || player.compensatedEntities.getSelf().getRiding() != null) {
+        if (player.packetStateData.lastPacketWasTeleport || player.packetStateData.lastPacketWasOnePointSeventeenDuplicate || player.compensatedEntities.self.getRiding() != null) {
             exempt = true;
             return;
         }

common/src/main/java/ac/grim/grimac/checks/impl/aim/AimModulo360.java

@@ -20,8 +20,10 @@ public class AimModulo360 extends Check implements RotationCheck {
 
     @Override
     public void process(final RotationUpdate rotationUpdate) {
-        // Exempt for teleport or entering a vehicle due to rotation reset
-        if (player.packetStateData.lastPacketWasTeleport || player.vehicleData.wasVehicleSwitch) {
+        // Exempt for teleport, entering a vehicle due to rotation reset or
+        // after forced, client-sided rotation change after interacting with a horse (not necessarily mounting it)
+        if (player.packetStateData.lastPacketWasTeleport || player.vehicleData.wasVehicleSwitch
+                || player.packetStateData.horseInteractCausedForcedRotation) {
             lastDeltaYaw = rotationUpdate.getDeltaXRot();
             return;
         }

common/src/main/java/ac/grim/grimac/checks/impl/aim/processor/AimProcessor.java

@@ -13,26 +13,26 @@ public class AimProcessor extends Check implements RotationCheck {
 
     private static final int SIGNIFICANT_SAMPLES_THRESHOLD = 15;
     private static final int TOTAL_SAMPLES_THRESHOLD = 80;
+    public double sensitivityX;
+    public double sensitivityY;
+    public double divisorX;
+    public double divisorY;
+    public double modeX, modeY;
+    public double deltaDotsX, deltaDotsY;
+    RunningMode xRotMode = new RunningMode(TOTAL_SAMPLES_THRESHOLD);
+    RunningMode yRotMode = new RunningMode(TOTAL_SAMPLES_THRESHOLD);
+    float lastXRot;
+    float lastYRot;
 
     public AimProcessor(GrimPlayer playerData) {
         super(playerData);
     }
 
-    RunningMode xRotMode = new RunningMode(TOTAL_SAMPLES_THRESHOLD);
-    RunningMode yRotMode = new RunningMode(TOTAL_SAMPLES_THRESHOLD);
-
-    float lastXRot;
-    float lastYRot;
-
-    public double sensitivityX;
-    public double sensitivityY;
-
-    public double divisorX;
-    public double divisorY;
-
-    public double modeX, modeY;
-
-    public double deltaDotsX, deltaDotsY;
+    public static double convertToSensitivity(double var13) {
+        double var11 = var13 / 0.15F / 8.0D;
+        double var9 = Math.cbrt(var11);
+        return (var9 - 0.2f) / 0.6f;
+    }
 
     @Override
     public void process(final RotationUpdate rotationUpdate) {
@@ -75,10 +75,4 @@ public class AimProcessor extends Check implements RotationCheck {
         this.deltaDotsX = deltaXRot / modeX;
         this.deltaDotsY = deltaYRot / modeY;
     }
-
-    public static double convertToSensitivity(double var13) {
-        double var11 = var13 / 0.15F / 8.0D;
-        double var9 = Math.cbrt(var11);
-        return (var9 - 0.2f) / 0.6f;
-    }
 }

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsC.java

@@ -5,8 +5,8 @@ import ac.grim.grimac.checks.CheckData;
 import ac.grim.grimac.checks.type.PacketCheck;
 import ac.grim.grimac.player.GrimPlayer;
 import com.github.retrooper.packetevents.event.PacketReceiveEvent;
-import com.github.retrooper.packetevents.protocol.player.GameMode;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
+import com.github.retrooper.packetevents.protocol.player.GameMode;
 import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientInteractEntity;
 
 @CheckData(name = "BadPacketsC", description = "Interacted with self")

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsE.java

@@ -28,7 +28,7 @@ public class BadPacketsE extends Check implements PacketCheck {
         } else if (WrapperPlayClientPlayerFlying.isFlying(event.getPacketType())) {
             noReminderTicks++;
         } else if (event.getPacketType() == PacketType.Play.Client.STEER_VEHICLE
-                || (isViaPleaseStopUsingProtocolHacksOnYourServer && player.compensatedEntities.getSelf().inVehicle())) {
+                || (isViaPleaseStopUsingProtocolHacksOnYourServer && player.inVehicle())) {
             noReminderTicks = 0; // Exempt vehicles
         }
 

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsH.java

@@ -41,7 +41,8 @@ public class BadPacketsH extends Check implements PacketCheck {
             // I will simply disable this check for 1.8- clients on 1.9+ servers as I can't be bothered to find a way around this.
             // Stop supporting such old clients on modern servers!
             if (player.getClientVersion().isOlderThan(ClientVersion.V_1_9)
-                    && PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_9)) return;
+                    && PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_9))
+                return;
 
             if (!sentAnimation && flagAndAlert() && shouldModifyPackets()) {
                 event.setCancelled(true);

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsL.java

@@ -24,7 +24,8 @@ public class BadPacketsL extends Check implements PacketCheck {
         if (event.getPacketType() == PacketType.Play.Client.PLAYER_DIGGING) {
             final WrapperPlayClientPlayerDigging packet = new WrapperPlayClientPlayerDigging(event);
 
-            if (packet.getAction() == DiggingAction.START_DIGGING || packet.getAction() == DiggingAction.FINISHED_DIGGING || packet.getAction() == DiggingAction.CANCELLED_DIGGING) return;
+            if (packet.getAction() == DiggingAction.START_DIGGING || packet.getAction() == DiggingAction.FINISHED_DIGGING || packet.getAction() == DiggingAction.CANCELLED_DIGGING)
+                return;
 
             // 1.8 and above clients always send digging packets that aren't used for digging at 0, 0, 0, facing DOWN
             // 1.7 and below clients do the same, except use SOUTH for RELEASE_USE_ITEM

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsM.java

@@ -13,14 +13,14 @@ import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientIn
 
 @CheckData(name = "BadPacketsM")
 public class BadPacketsM extends Check implements PacketCheck {
-    public BadPacketsM(final GrimPlayer player) {
-        super(player);
-    }
-
     // 1.7 players do not send INTERACT_AT, so we cannot check them
     private final boolean exempt = player.getClientVersion().isOlderThanOrEquals(ClientVersion.V_1_7_10);
     private boolean sentInteractAt = false;
 
+    public BadPacketsM(final GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPacketReceive(PacketReceiveEvent event) {
         if (event.getPacketType() == PacketType.Play.Client.INTERACT_ENTITY && !exempt) {

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsP.java

@@ -14,13 +14,13 @@ import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerOp
 @CheckData(name = "BadPacketsP", experimental = true)
 public class BadPacketsP extends Check implements PacketCheck {
 
+    private int containerType = -1;
+    private int containerId = -1;
+
     public BadPacketsP(GrimPlayer playerData) {
         super(playerData);
     }
 
-    private int containerType = -1;
-    private int containerId = -1;
-
     @Override
     public void onPacketSend(final PacketSendEvent event) {
         if (event.getPacketType() == PacketType.Play.Server.OPEN_WINDOW) {

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsR.java

@@ -10,22 +10,22 @@ import com.github.retrooper.packetevents.protocol.player.GameMode;
 
 @CheckData(name = "BadPacketsR", decay = 0.25, experimental = true)
 public class BadPacketsR extends Check implements PacketCheck {
-    public BadPacketsR(final GrimPlayer player) {
-        super(player);
-    }
-
     private int positions = 0;
     private long clock = 0;
     private long lastTransTime;
     private int oldTransId = 0;
 
+    public BadPacketsR(final GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPacketReceive(final PacketReceiveEvent event) {
         if (isTransaction(event.getPacketType()) && player.packetStateData.lastTransactionPacketWasValid) {
             long ms = (player.getPlayerClockAtLeast() - clock) / 1000000L;
             long diff = (System.currentTimeMillis() - lastTransTime);
             if (diff > 2000 && ms > 2000) {
-                if (positions == 0 && clock != 0 && player.gamemode != GameMode.SPECTATOR && !player.compensatedEntities.getSelf().isDead) {
+                if (positions == 0 && clock != 0 && player.gamemode != GameMode.SPECTATOR && !player.compensatedEntities.self.isDead) {
                     flag("time=" + ms + "ms, " + "lst=" + diff + "ms, positions=" + positions);
                 } else {
                     reward();
@@ -39,7 +39,7 @@ public class BadPacketsR extends Check implements PacketCheck {
         }
         //
         if ((event.getPacketType() == PacketType.Play.Client.PLAYER_POSITION_AND_ROTATION ||
-                event.getPacketType() == PacketType.Play.Client.PLAYER_POSITION) && !player.compensatedEntities.getSelf().inVehicle()) {
+                event.getPacketType() == PacketType.Play.Client.PLAYER_POSITION) && !player.inVehicle()) {
             positions++;
         } else if ((event.getPacketType() == PacketType.Play.Client.STEER_VEHICLE || event.getPacketType() == PacketType.Play.Client.VEHICLE_MOVE)
                 && player.inVehicle()) {

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsT.java

@@ -14,10 +14,6 @@ import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientIn
 
 @CheckData(name = "BadPacketsT")
 public class BadPacketsT extends Check implements PacketCheck {
-    public BadPacketsT(final GrimPlayer player) {
-        super(player);
-    }
-
     // 1.7 and 1.8 seem to have different hitbox "expansion" values than 1.9+
     // https://github.com/GrimAnticheat/Grim/pull/1274#issuecomment-1872458702
     // https://github.com/GrimAnticheat/Grim/pull/1274#issuecomment-1872533497
@@ -26,6 +22,10 @@ public class BadPacketsT extends Check implements PacketCheck {
     private final double minVerticalDisplacement = -0.0001 - (hasLegacyExpansion ? 0.1 : 0);
     private final double maxVerticalDisplacement = 1.8001 + (hasLegacyExpansion ? 0.1 : 0);
 
+    public BadPacketsT(final GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPacketReceive(final PacketReceiveEvent event) {
         if (event.getPacketType().equals(PacketType.Play.Client.INTERACT_ENTITY)) {

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsV.java

@@ -12,12 +12,12 @@ import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientPl
 
 @CheckData(name = "BadPacketsV", description = "Did not move far enough", experimental = true)
 public class BadPacketsV extends Check implements PacketCheck {
+    private int noReminderTicks;
+
     public BadPacketsV(GrimPlayer player) {
         super(player);
     }
 
-    private int noReminderTicks;
-
     @Override
     public void onPacketReceive(PacketReceiveEvent event) {
         if (!player.canSkipTicks() && isTickPacket(event.getPacketType())) {

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsX.java

@@ -12,14 +12,14 @@ import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientEn
 
 @CheckData(name = "BadPacketsX", experimental = true)
 public class BadPacketsX extends Check implements PostPredictionCheck {
-    public BadPacketsX(GrimPlayer player) {
-        super(player);
-    }
-
     private boolean sprint;
     private boolean sneak;
     private int flags;
 
+    public BadPacketsX(GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPredictionComplete(final PredictionComplete predictionComplete) {
         if (!player.canSkipTicks()) {
@@ -33,9 +33,7 @@ public class BadPacketsX extends Check implements PostPredictionCheck {
 
         if (player.isTickingReliablyFor(3)) {
             for (; flags > 0; flags--) {
-                if (flagAndAlert()) {
-                    setbackIfAboveSetbackVL();
-                }
+                flagAndAlertWithSetback();
             }
         }
 

common/src/main/java/ac/grim/grimac/checks/impl/badpackets/BadPacketsY.java

@@ -19,7 +19,7 @@ public class BadPacketsY extends Check implements PacketCheck {
         if (event.getPacketType() == PacketType.Play.Client.HELD_ITEM_CHANGE) {
             final int slot = new WrapperPlayClientHeldItemChange(event).getSlot();
             if (slot > 8 || slot < 0) { // ban
-                if (flagAndAlert("slot="+slot) && shouldModifyPackets()) {
+                if (flagAndAlert("slot=" + slot) && shouldModifyPackets()) {
                     event.setCancelled(true);
                     player.onPacketCancel();
                 }

common/src/main/java/ac/grim/grimac/checks/impl/baritone/Baritone.java

@@ -12,12 +12,12 @@ import ac.grim.grimac.utils.math.GrimMath;
 // This check has been patched by Baritone for a long time and it also seems to false with cinematic camera now, so it is disabled.
 @CheckData(name = "Baritone")
 public class Baritone extends Check implements RotationCheck {
+    private int verbose;
+
     public Baritone(GrimPlayer playerData) {
         super(playerData);
     }
 
-    private int verbose;
-
     @Override
     public void process(final RotationUpdate rotationUpdate) {
         final HeadRotation from = rotationUpdate.getFrom();

common/src/main/java/ac/grim/grimac/checks/impl/breaking/AirLiquidBreak.java

@@ -12,20 +12,21 @@ import com.github.retrooper.packetevents.protocol.player.DiggingAction;
 import com.github.retrooper.packetevents.protocol.world.states.type.StateType;
 import com.github.retrooper.packetevents.protocol.world.states.type.StateTypes;
 import com.github.retrooper.packetevents.util.Vector3i;
+import org.checkerframework.checker.nullness.qual.NonNull;
 
 @CheckData(name = "AirLiquidBreak", description = "Breaking a block that cannot be broken")
 public class AirLiquidBreak extends Check implements BlockBreakCheck {
+    public final boolean noFireHitbox = player.getClientVersion().isOlderThanOrEquals(ClientVersion.V_1_15_2);
+    private int lastTick;
+    private boolean didLastFlag;
+    // Initialize to non-null values to prevent NPE when checking for blockType properties and if position equals old position
+    private @NonNull Vector3i lastBreakLoc = new Vector3i();
+    private @NonNull StateType lastBlockType = StateTypes.AIR;
+
     public AirLiquidBreak(GrimPlayer player) {
         super(player);
     }
 
-    private int lastTick;
-    private boolean didLastFlag;
-    private Vector3i lastBreakLoc;
-    private StateType lastBlockType;
-
-    public final boolean noFireHitbox = player.getClientVersion().isOlderThanOrEquals(ClientVersion.V_1_15_2);
-
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
         if (blockBreak.action != DiggingAction.START_DIGGING && blockBreak.action != DiggingAction.FINISHED_DIGGING)

common/src/main/java/ac/grim/grimac/checks/impl/breaking/FarBreak.java

@@ -6,11 +6,11 @@ import ac.grim.grimac.checks.type.BlockBreakCheck;
 import ac.grim.grimac.player.GrimPlayer;
 import ac.grim.grimac.utils.anticheat.update.BlockBreak;
 import ac.grim.grimac.utils.collisions.datatypes.SimpleCollisionBox;
+import ac.grim.grimac.utils.math.Vector3dm;
 import ac.grim.grimac.utils.math.VectorUtils;
 import com.github.retrooper.packetevents.protocol.attribute.Attributes;
 import com.github.retrooper.packetevents.protocol.player.DiggingAction;
 import com.github.retrooper.packetevents.protocol.player.GameMode;
-import org.bukkit.util.Vector;
 
 @CheckData(name = "FarBreak", description = "Breaking blocks too far away", experimental = true)
 public class FarBreak extends Check implements BlockBreakCheck {
@@ -20,19 +20,20 @@ public class FarBreak extends Check implements BlockBreakCheck {
 
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
-        if (player.gamemode == GameMode.SPECTATOR || player.compensatedEntities.getSelf().inVehicle() || blockBreak.action == DiggingAction.CANCELLED_DIGGING) return; // falses
+        if (player.gamemode == GameMode.SPECTATOR || player.inVehicle() || blockBreak.action == DiggingAction.CANCELLED_DIGGING)
+            return; // falses
 
         double min = Double.MAX_VALUE;
         for (double d : player.getPossibleEyeHeights()) {
             SimpleCollisionBox box = new SimpleCollisionBox(blockBreak.position);
-            Vector eyes = new Vector(player.x, player.y + d, player.z);
-            Vector best = VectorUtils.cutBoxToVector(eyes, box);
+            Vector3dm eyes = new Vector3dm(player.x, player.y + d, player.z);
+            Vector3dm best = VectorUtils.cutBoxToVector(eyes, box);
             min = Math.min(min, eyes.distanceSquared(best));
         }
 
         // getPickRange() determines this?
         // With 1.20.5+ the new attribute determines creative mode reach using a modifier
-        double maxReach = player.compensatedEntities.getSelf().getAttributeValue(Attributes.BLOCK_INTERACTION_RANGE);
+        double maxReach = player.compensatedEntities.self.getAttributeValue(Attributes.BLOCK_INTERACTION_RANGE);
         if (player.packetStateData.didLastMovementIncludePosition || player.canSkipTicks()) {
             double threshold = player.getMovementThreshold();
             maxReach += Math.hypot(threshold, threshold);

common/src/main/java/ac/grim/grimac/checks/impl/breaking/FastBreak.java

@@ -12,15 +12,23 @@ import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.player.DiggingAction;
 import com.github.retrooper.packetevents.protocol.world.states.WrappedBlockState;
+import com.github.retrooper.packetevents.protocol.world.states.type.StateType;
 import com.github.retrooper.packetevents.protocol.world.states.type.StateTypes;
 import com.github.retrooper.packetevents.util.Vector3i;
 import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientPlayerFlying;
 
+import java.util.Set;
+
 // Based loosely off of Hawk BlockBreakSpeedSurvival
 // Also based loosely off of NoCheatPlus FastBreak
 // Also based off minecraft wiki: https://minecraft.wiki/w/Breaking#Instant_breaking
 @CheckData(name = "FastBreak", description = "Breaking blocks too quickly")
 public class FastBreak extends Check implements BlockBreakCheck {
+
+    // For some reason these states flag and I don't know why.
+    // Better to just exempt to not annoy legit players.
+    private static final Set<StateType> EXEMPT_STATES = Set.of();
+
     public FastBreak(GrimPlayer playerData) {
         super(playerData);
     }
@@ -45,7 +53,8 @@ public class FastBreak extends Check implements BlockBreakCheck {
             WrappedBlockState block = blockBreak.block;
 
             // Exempt all blocks that do not exist in the player version
-            if (WrappedBlockState.getDefaultState(player.getClientVersion(), block.getType()).getType() == StateTypes.AIR) {
+            final WrappedBlockState defaultState = WrappedBlockState.getDefaultState(player.getClientVersion(), block.getType());
+            if (defaultState.getType() == StateTypes.AIR || EXEMPT_STATES.contains(defaultState.getType())) {
                 return;
             }
 
@@ -63,7 +72,7 @@ public class FastBreak extends Check implements BlockBreakCheck {
             }
 
             if (blockDelayBalance > 1000) { // If more than a second of advantage
-                if (flagAndAlert("Delay=" + breakDelay) && shouldModifyPackets()) {
+                if (flagAndAlert("delay=" + breakDelay + "ms, type=" + blockBreak.block.getType()) && shouldModifyPackets()) {
                     blockBreak.cancel();
                 }
             }
@@ -85,12 +94,13 @@ public class FastBreak extends Check implements BlockBreakCheck {
             }
 
             if (blockBreakBalance > 1000) { // If more than a second of advantage
-                if (flagAndAlert("Diff=" + diff + ",Balance=" + blockBreakBalance) && shouldModifyPackets()) {
+                if (flagAndAlert("diff=" + diff + "ms, balance=" + blockBreakBalance + "ms, type=" + blockBreak.block.getType()) && shouldModifyPackets()) {
                     blockBreak.cancel();
                 }
             }
 
-            lastFinishBreak = System.currentTimeMillis();
+            // also set start time because the breaking netcode is fucked on 1.14.4+
+            lastFinishBreak = startBreak = System.currentTimeMillis();
         }
     }
 

common/src/main/java/ac/grim/grimac/checks/impl/breaking/MultiBreak.java

@@ -18,16 +18,15 @@ import java.util.List;
 
 @CheckData(name = "MultiBreak", experimental = true)
 public class MultiBreak extends Check implements BlockBreakCheck {
-    public MultiBreak(GrimPlayer player) {
-        super(player);
-    }
-
     private final List<String> flags = new ArrayList<>();
-
     private boolean hasBroken;
     private BlockFace lastFace;
     private Vector3i lastPos;
 
+    public MultiBreak(GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
         if (blockBreak.action == DiggingAction.CANCELLED_DIGGING) {

common/src/main/java/ac/grim/grimac/checks/impl/breaking/NoSwingBreak.java

@@ -11,13 +11,13 @@ import com.github.retrooper.packetevents.protocol.player.DiggingAction;
 
 @CheckData(name = "NoSwingBreak", description = "Did not swing while breaking block", experimental = true)
 public class NoSwingBreak extends Check implements BlockBreakCheck {
+    private boolean sentAnimation;
+    private boolean sentBreak;
+
     public NoSwingBreak(GrimPlayer playerData) {
         super(playerData);
     }
 
-    private boolean sentAnimation;
-    private boolean sentBreak;
-
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
         if (blockBreak.action != DiggingAction.CANCELLED_DIGGING) {

common/src/main/java/ac/grim/grimac/checks/impl/breaking/PositionBreakA.java

@@ -17,7 +17,7 @@ public class PositionBreakA extends Check implements BlockBreakCheck {
 
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
-        if (player.compensatedEntities.getSelf().inVehicle()
+        if (player.inVehicle()
                 || blockBreak.action == DiggingAction.CANCELLED_DIGGING
                 || blockBreak.block.getType() == StateTypes.REDSTONE_WIRE
         ) return;

common/src/main/java/ac/grim/grimac/checks/impl/breaking/PositionBreakB.java

@@ -11,13 +11,13 @@ import com.github.retrooper.packetevents.protocol.world.BlockFace;
 
 @CheckData(name = "PositionBreakB", experimental = true)
 public class PositionBreakB extends Check implements BlockBreakCheck {
+    private final int releaseFace = player.getClientVersion().isNewerThanOrEquals(ClientVersion.V_1_8) ? 0 : 255;
+    private BlockFace lastFace;
+
     public PositionBreakB(GrimPlayer player) {
         super(player);
     }
 
-    private BlockFace lastFace;
-    private final int releaseFace = player.getClientVersion().isNewerThanOrEquals(ClientVersion.V_1_8) ? 0 : 255;
-
     @Override
     public void onBlockBreak(BlockBreak blockBreak) {
         if (blockBreak.action == DiggingAction.START_DIGGING) {

common/src/main/java/ac/grim/grimac/checks/impl/breaking/RotationBreak.java

@@ -0,0 +1,122 @@
+package ac.grim.grimac.checks.impl.breaking;
+
+import ac.grim.grimac.checks.Check;
+import ac.grim.grimac.checks.CheckData;
+import ac.grim.grimac.checks.type.BlockBreakCheck;
+import ac.grim.grimac.player.GrimPlayer;
+import ac.grim.grimac.utils.anticheat.update.BlockBreak;
+import ac.grim.grimac.utils.collisions.datatypes.SimpleCollisionBox;
+import ac.grim.grimac.utils.data.Pair;
+import ac.grim.grimac.utils.math.Vector3dm;
+import ac.grim.grimac.utils.nmsutil.Ray;
+import ac.grim.grimac.utils.nmsutil.ReachUtils;
+import com.github.retrooper.packetevents.protocol.attribute.Attributes;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.protocol.player.DiggingAction;
+import com.github.retrooper.packetevents.protocol.player.GameMode;
+import com.github.retrooper.packetevents.protocol.world.BlockFace;
+import com.github.retrooper.packetevents.util.Vector3d;
+import com.github.retrooper.packetevents.util.Vector3f;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+@CheckData(name = "RotationBreak", experimental = true)
+public class RotationBreak extends Check implements BlockBreakCheck {
+    private double flagBuffer = 0; // If the player flags once, force them to play legit, or we will cancel the tick before.
+    private boolean ignorePost = false;
+
+    public RotationBreak(GrimPlayer player) {
+        super(player);
+    }
+
+    @Override
+    public void onBlockBreak(BlockBreak blockBreak) {
+        if (player.gamemode == GameMode.SPECTATOR)
+            return; // you don't send flying packets when spectating entities
+        if (player.inVehicle()) return; // falses
+        if (blockBreak.action == DiggingAction.CANCELLED_DIGGING) return; // falses
+
+        if (flagBuffer > 0 && !didRayTraceHit(blockBreak)) {
+            ignorePost = true;
+            // If the player hit and has flagged this check recently
+            if (flagAndAlert("pre-flying, action=" + blockBreak.action) && shouldModifyPackets()) {
+                blockBreak.cancel();
+            }
+        }
+    }
+
+    @Override
+    public void onPostFlyingBlockBreak(BlockBreak blockBreak) {
+        if (player.gamemode == GameMode.SPECTATOR)
+            return; // you don't send flying packets when spectating entities
+        if (player.inVehicle()) return; // falses
+        if (blockBreak.action == DiggingAction.CANCELLED_DIGGING) return; // falses
+
+        // Don't flag twice
+        if (ignorePost) {
+            ignorePost = false;
+            return;
+        }
+
+        if (didRayTraceHit(blockBreak)) {
+            flagBuffer = Math.max(0, flagBuffer - 0.1);
+        } else {
+            flagBuffer = 1;
+            flagAndAlert("post-flying, action=" + blockBreak.action);
+        }
+    }
+
+    private boolean didRayTraceHit(BlockBreak blockBreak) {
+        SimpleCollisionBox box = new SimpleCollisionBox(blockBreak.position);
+
+        final double[] possibleEyeHeights = player.getPossibleEyeHeights();
+
+        // Start checking if player is in the block
+        double minEyeHeight = Double.MAX_VALUE;
+        double maxEyeHeight = Double.MIN_VALUE;
+        for (double height : possibleEyeHeights) {
+            minEyeHeight = Math.min(minEyeHeight, height);
+            maxEyeHeight = Math.max(maxEyeHeight, height);
+        }
+
+        SimpleCollisionBox eyePositions = new SimpleCollisionBox(player.x, player.y + minEyeHeight, player.z, player.x, player.y + maxEyeHeight, player.z);
+        eyePositions.expand(player.getMovementThreshold());
+
+        // If the player is inside a block, then they can ray trace through the block and hit the other side of the block
+        if (eyePositions.isIntersected(box)) {
+            return true;
+        }
+        // End checking if the player is in the block
+
+        List<Vector3f> possibleLookDirs = new ArrayList<>(Arrays.asList(
+                new Vector3f(player.lastXRot, player.yRot, 0),
+                new Vector3f(player.xRot, player.yRot, 0)
+        ));
+
+        // 1.9+ players could be a tick behind because we don't get skipped ticks
+        if (player.getClientVersion().isNewerThanOrEquals(ClientVersion.V_1_9)) {
+            possibleLookDirs.add(new Vector3f(player.lastXRot, player.lastYRot, 0));
+        }
+
+        // 1.7 players do not have any of these issues! They are always on the latest look vector
+        if (player.getClientVersion().isOlderThan(ClientVersion.V_1_8)) {
+            possibleLookDirs = Collections.singletonList(new Vector3f(player.xRot, player.yRot, 0));
+        }
+
+        final double distance = player.compensatedEntities.self.getAttributeValue(Attributes.BLOCK_INTERACTION_RANGE);
+        for (double d : possibleEyeHeights) {
+            for (Vector3f lookDir : possibleLookDirs) {
+                Vector3d starting = new Vector3d(player.x, player.y + d, player.z);
+                Ray trace = new Ray(player, starting.getX(), starting.getY(), starting.getZ(), lookDir.getX(), lookDir.getY());
+                Pair<Vector3dm, BlockFace> intercept = ReachUtils.calculateIntercept(box, trace.getOrigin(), trace.getPointAtDistance(distance));
+
+                if (intercept.first() != null) return true;
+            }
+        }
+
+        return false;
+    }
+}

common/src/main/java/ac/grim/grimac/checks/impl/breaking/WrongBreak.java

@@ -16,14 +16,14 @@ import static ac.grim.grimac.utils.nmsutil.BlockBreakSpeed.getBlockDamage;
 
 @CheckData(name = "WrongBreak")
 public class WrongBreak extends Check implements BlockBreakCheck {
+    private final int exemptedY = player.getClientVersion().isOlderThan(ClientVersion.V_1_8) ? 255 : (PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_14) ? -1 : 4095);
+    private boolean lastBlockWasInstantBreak = false;
+    private Vector3i lastBlock, lastCancelledBlock, lastLastBlock = null;
+
     public WrongBreak(final GrimPlayer player) {
         super(player);
     }
 
-    private boolean lastBlockWasInstantBreak = false;
-    private Vector3i lastBlock, lastCancelledBlock, lastLastBlock = null;
-    private final int exemptedY = player.getClientVersion().isOlderThan(ClientVersion.V_1_8) ? 255 : (PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_14) ? -1 : 4095);
-
     // The client sometimes sends a wierd cancel packet
     private boolean shouldExempt(final Vector3i pos) {
         // lastLastBlock is always null when this happens, and lastBlock isn't

common/src/main/java/ac/grim/grimac/checks/impl/combat/MultiInteractA.java

@@ -14,15 +14,15 @@ import java.util.ArrayList;
 
 @CheckData(name = "MultiInteractA", description = "Interacted with multiple entities in the same tick", experimental = true)
 public class MultiInteractA extends Check implements PostPredictionCheck {
-    public MultiInteractA(final GrimPlayer player) {
-        super(player);
-    }
-
     private final ArrayList<String> flags = new ArrayList<>();
     private int lastEntity;
     private boolean lastSneaking;
     private boolean hasInteracted = false;
 
+    public MultiInteractA(final GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPacketReceive(PacketReceiveEvent event) {
         if (event.getPacketType() == PacketType.Play.Client.INTERACT_ENTITY) {

common/src/main/java/ac/grim/grimac/checks/impl/combat/MultiInteractB.java

@@ -16,14 +16,14 @@ import java.util.ArrayList;
 
 @CheckData(name = "MultiInteractB", experimental = true)
 public class MultiInteractB extends Check implements PostPredictionCheck {
-    public MultiInteractB(final GrimPlayer player) {
-        super(player);
-    }
-
     private final ArrayList<String> flags = new ArrayList<>();
     private Vector3f lastPos;
     private boolean hasInteracted = false;
 
+    public MultiInteractB(final GrimPlayer player) {
+        super(player);
+    }
+
     @Override
     public void onPacketReceive(PacketReceiveEvent event) {
         if (event.getPacketType() == PacketType.Play.Client.INTERACT_ENTITY) {

common/src/main/java/ac/grim/grimac/checks/impl/combat/Reach.java

@@ -23,6 +23,7 @@ import ac.grim.grimac.player.GrimPlayer;
 import ac.grim.grimac.utils.collisions.datatypes.SimpleCollisionBox;
 import ac.grim.grimac.utils.data.packetentity.PacketEntity;
 import ac.grim.grimac.utils.data.packetentity.dragon.PacketEntityEnderDragonPart;
+import ac.grim.grimac.utils.math.Vector3dm;
 import ac.grim.grimac.utils.nmsutil.ReachUtils;
 import com.github.retrooper.packetevents.event.PacketReceiveEvent;
 import com.github.retrooper.packetevents.protocol.attribute.Attributes;
@@ -35,23 +36,25 @@ import com.github.retrooper.packetevents.util.Vector3d;
 import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientInteractEntity;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-import org.bukkit.util.Vector;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 
 // You may not copy the check unless you are licensed under GPL
 @CheckData(name = "Reach", setback = 10)
 public class Reach extends Check implements PacketCheck {
 
-    // Only one flag per reach attack, per entity, per tick.
-    // We store position because lastX isn't reliable on teleports.
-    private final Int2ObjectMap<Vector3d> playerAttackQueue = new Int2ObjectOpenHashMap<>();
     private static final List<EntityType> blacklisted = Arrays.asList(
             EntityTypes.BOAT,
             EntityTypes.CHEST_BOAT,
             EntityTypes.SHULKER);
-
+    private static final CheckResult NONE = new CheckResult(ResultType.NONE, "");
+    // Only one flag per reach attack, per entity, per tick.
+    // We store position because lastX isn't reliable on teleports.
+    private final Int2ObjectMap<Vector3d> playerAttackQueue = new Int2ObjectOpenHashMap<>();
     private boolean cancelImpossibleHits;
     private double threshold;
     private double cancelBuffer; // For the next 4 hits after using reach, we aggressively cancel reach
@@ -89,10 +92,12 @@ public class Reach extends Check implements PacketCheck {
             if (entity.isDead) return;
 
             // TODO: Remove when in front of via
-            if (entity.getType() == EntityTypes.ARMOR_STAND && player.getClientVersion().isOlderThan(ClientVersion.V_1_8)) return;
+            if (entity.getType() == EntityTypes.ARMOR_STAND && player.getClientVersion().isOlderThan(ClientVersion.V_1_8))
+                return;
 
-            if (player.gamemode == GameMode.CREATIVE || player.gamemode == GameMode.SPECTATOR) return;
-            if (player.compensatedEntities.getSelf().inVehicle()) return;
+            if (player.gamemode == GameMode.CREATIVE || player.gamemode == GameMode.SPECTATOR)
+                return;
+            if (player.inVehicle()) return;
             if (entity.riding != null) return;
 
             boolean tooManyAttacks = playerAttackQueue.size() > 10;
@@ -127,8 +132,9 @@ public class Reach extends Check implements PacketCheck {
         if ((blacklisted.contains(reachEntity.getType()) || !reachEntity.isLivingEntity()) && reachEntity.getType() != EntityTypes.END_CRYSTAL)
             return false; // exempt
 
-        if (player.gamemode == GameMode.CREATIVE || player.gamemode == GameMode.SPECTATOR) return false;
-        if (player.compensatedEntities.getSelf().inVehicle()) return false;
+        if (player.gamemode == GameMode.CREATIVE || player.gamemode == GameMode.SPECTATOR)
+            return false;
+        if (player.inVehicle()) return false;
 
         // Filter out what we assume to be cheats
         if (cancelBuffer != 0) {
@@ -139,7 +145,7 @@ public class Reach extends Check implements PacketCheck {
             if (reachEntity.getType() == EntityTypes.END_CRYSTAL) {
                 targetBox = new SimpleCollisionBox(reachEntity.trackedServerPosition.getPos().subtract(1, 0, 1), reachEntity.trackedServerPosition.getPos().add(1, 2, 1));
             }
-            return ReachUtils.getMinReachToBox(player, targetBox) > player.compensatedEntities.getSelf().getAttributeValue(Attributes.ENTITY_INTERACTION_RANGE);
+            return ReachUtils.getMinReachToBox(player, targetBox) > player.compensatedEntities.self.getAttributeValue(Attributes.ENTITY_INTERACTION_RANGE);
         }
     }
 
@@ -191,7 +197,7 @@ public class Reach extends Check implements PacketCheck {
         double minDistance = Double.MAX_VALUE;
 
         // https://bugs.mojang.com/browse/MC-67665
-        List<Vector> possibleLookDirs = new ArrayList<>(Collections.singletonList(ReachUtils.getLook(player, player.xRot, player.yRot)));
+        List<Vector3dm> possibleLookDirs = new ArrayList<>(Collections.singletonList(ReachUtils.getLook(player, player.xRot, player.yRot)));
 
         // If we are a tick behind, we don't know their next look so don't bother doing this
         if (!isPrediction) {
@@ -208,17 +214,17 @@ public class Reach extends Check implements PacketCheck {
             }
         }
 
-        final double maxReach = player.compensatedEntities.getSelf().getAttributeValue(Attributes.ENTITY_INTERACTION_RANGE);
+        final double maxReach = player.compensatedEntities.self.getAttributeValue(Attributes.ENTITY_INTERACTION_RANGE);
         // +3 would be 3 + 3 = 6, which is the pre-1.20.5 behaviour, preventing "Missed Hitbox"
         final double distance = maxReach + 3;
         final double[] possibleEyeHeights = player.getPossibleEyeHeights();
-        final Vector eyePos = new Vector(from.getX(), 0, from.getZ());
-        for (Vector lookVec : possibleLookDirs) {
+        final Vector3dm eyePos = new Vector3dm(from.getX(), 0, from.getZ());
+        for (Vector3dm lookVec : possibleLookDirs) {
             for (double eye : possibleEyeHeights) {
                 eyePos.setY(from.getY() + eye);
-                Vector endReachPos = eyePos.clone().add(new Vector(lookVec.getX() * distance, lookVec.getY() * distance, lookVec.getZ() * distance));
+                Vector3dm endReachPos = eyePos.clone().add(new Vector3dm(lookVec.getX() * distance, lookVec.getY() * distance, lookVec.getZ() * distance));
 
-                Vector intercept = ReachUtils.calculateIntercept(targetBox, eyePos, endReachPos).first();
+                Vector3dm intercept = ReachUtils.calculateIntercept(targetBox, eyePos, endReachPos).first();
 
                 if (ReachUtils.isVecInside(targetBox, eyePos)) {
                     minDistance = 0;
@@ -247,21 +253,19 @@ public class Reach extends Check implements PacketCheck {
         return NONE;
     }
 
-    private static final CheckResult NONE = new CheckResult(ResultType.NONE, "");
-
-    private record CheckResult(ResultType type, String verbose) {
-        public boolean isFlag() {
-            return type != ResultType.NONE;
-        }
+    @Override
+    public void onReload(ConfigManager config) {
+        this.cancelImpossibleHits = config.getBooleanElse("Reach.block-impossible-hits", true);
+        this.threshold = config.getDoubleElse("Reach.threshold", 0.0005);
     }
 
     private enum ResultType {
         REACH, HITBOX, NONE
     }
 
-    @Override
-    public void onReload(ConfigManager config) {
-        this.cancelImpossibleHits = config.getBooleanElse("Reach.block-impossible-hits", true);
-        this.threshold = config.getDoubleElse("Reach.threshold", 0.0005);
+    private record CheckResult(ResultType type, String verbose) {
+        public boolean isFlag() {
+            return type != ResultType.NONE;
+        }
     }
 }