Created 1.18 R1 (plugin's native version) nms package.

Created 1.18 R1 handling of sending player abilities packet and tested on spigot.
Documented force_protocolib config.

.gitignore

@@ -5,5 +5,6 @@
 .lastDeploymentsId
 
 #nms submodule build directory ignored
+/nms/build
 /nms/*/build
 

build.gradle.kts

@@ -10,6 +10,7 @@ plugins {
     `maven-publish`
     signing
     id("cn.lalaki.central").version("1.2.5")
+    id("io.papermc.paperweight.userdev") version "1.7.1" apply false
 }
 
 group = "xyz.alexcrea"
@@ -22,6 +23,9 @@ repositories {
 }
 
 dependencies {
+    // Spigot api
+    compileOnly("org.spigotmc:spigot-api:1.18-R0.1-SNAPSHOT")
+
     // Gui library
     implementation("com.github.stefvanschie.inventoryframework:IF:0.10.14")
 
@@ -34,6 +38,7 @@ dependencies {
 
     // Include nms
     implementation(project(":nms:nms-common"))
+    implementation(project(":nms:v1_18R1", configuration = "reobf"))
 
 }
 
@@ -46,33 +51,32 @@ allprojects {
 
         // Spigot repository
         maven(url = "https://hub.spigotmc.org/nexus/content/repositories/snapshots/")
+
+        // Paper repository
+        maven("https://repo.papermc.io/repository/maven-public/")
     }
 
     dependencies {
         compileOnly(kotlin("stdlib"))
 
-        // We assume nms part will not require version specific api.
-        // If any issue occur because of this assumption. please fell free to edit.
-        compileOnly("org.spigotmc:spigot-api:1.18-R0.1-SNAPSHOT")
-
         // Currently not used. but it would be useful to test.
         testImplementation(platform("org.junit:junit-bom:5.9.1"))
         testImplementation("org.junit.jupiter:junit-jupiter")
     }
 
+    tasks.getByName<Test>("test") {
+        useJUnitPlatform()
+    }
+
     // Configure used version of kotlin and java
     java {
         disableAutoTargetJvm()
         toolchain.languageVersion.set(JavaLanguageVersion.of(20))
     }
 
-    tasks.getByName<Test>("test") {
-        useJUnitPlatform()
-    }
-
     // Set target version
     tasks.withType<JavaCompile>().configureEach {
-        sourceCompatibility = "16" // We aim for java 16 for minecraft 1.16.5. even if it not really suported.
+        sourceCompatibility = "16" // We aim for java 16 for minecraft 1.16.5. even if it not really suported by custom anvil.
         targetCompatibility = "16"
 
         options.encoding = "UTF-8"

nms/nms-common/build.gradle.kts

@@ -8,7 +8,9 @@ repositories {
 }
 
 dependencies {
+    // Spigot api
+    compileOnly("org.spigotmc:spigot-api:1.18-R0.1-SNAPSHOT")
+
     // Protocolib
     compileOnly("com.comphenix.protocol:ProtocolLib:5.1.0")
-
 }

nms/nms-common/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/packet/NoPacketManager.kt

@@ -1,4 +1,14 @@
 package xyz.alexcrea.cuanvil.dependency.packet
 
-// ProtocoLib not installed and not in a supported version: We do nothing
-class NoPacketManager: AbstractPacketManager()
+import org.bukkit.entity.Player
+
+class NoPacketManager: PacketManager {
+
+    override val canSetInstantBuild: Boolean
+        get() = false
+
+    override fun setInstantBuild(player: Player, instantBuild: Boolean) {
+        // ProtocoLib not installed and not in a supported version: We do nothing
+    }
+
+}

nms/nms-common/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/packet/PacketManagerBase.kt

@@ -1,13 +1,16 @@
 package xyz.alexcrea.cuanvil.dependency.packet
 
 import org.bukkit.entity.Player
+import org.bukkit.event.Listener
+
+abstract class PacketManagerBase() : PacketManager, Listener {
 
-abstract class AbstractPacketManager : PacketManager {
     override val canSetInstantBuild: Boolean
         get() = false
 
     override fun setInstantBuild(player: Player, instantBuild: Boolean) {
-        // Default empty.
+        // Default implementation is empty.
     }
 
+
 }

nms/nms-common/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/packet/PacketManagerSelector.java

@@ -1,41 +0,0 @@
-package xyz.alexcrea.cuanvil.dependency.packet;
-
-import org.bukkit.Bukkit;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class PacketManagerSelector {
-
-    private PacketManagerSelector(){}
-
-    public static @NotNull PacketManager selectPacketManager(boolean forceProtocolib){
-        // Try to find version
-        if(forceProtocolib){
-            PacketManager protocolibPacketManager = getProtocolibIfPresent();
-            if(protocolibPacketManager != null) return protocolibPacketManager;
-        }
-
-        PacketManager versionSpecificManager = getVersionSpecificManager();
-        if(versionSpecificManager != null) return versionSpecificManager;
-
-        if(!forceProtocolib){
-            PacketManager protocolibPacketManager = getProtocolibIfPresent();
-            if(protocolibPacketManager != null) return protocolibPacketManager;
-        }
-        return new NoPacketManager();
-    }
-
-    private static @Nullable PacketManager getProtocolibIfPresent(){
-        if(Bukkit.getPluginManager().isPluginEnabled("ProtocolLib")) return new ProtocoLibWrapper();
-        return null;
-    }
-
-    private static @Nullable PacketManager getVersionSpecificManager() {
-
-
-        //TODO depending on version. find the manager !
-
-        return null;
-    }
-
-}

nms/v1_18R1/build.gradle.kts

@@ -0,0 +1,43 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+group = rootProject.group
+version = rootProject.version
+
+plugins {
+    id("io.papermc.paperweight.userdev")
+}
+
+dependencies {
+    implementation(project(":nms:nms-common"))
+
+    // Used for nms
+    paperweight.paperDevBundle("1.18-R0.1-SNAPSHOT")
+}
+
+repositories {
+    maven("https://repo.papermc.io/repository/maven-public/")
+
+}
+
+// As minecraft 1.18 work with java 1.17 or above. we set language version to 1.17
+
+// Configure used version of kotlin and java
+java {
+    disableAutoTargetJvm()
+    toolchain.languageVersion.set(JavaLanguageVersion.of(17))
+}
+
+// Set target version
+tasks.withType<JavaCompile>().configureEach {
+    sourceCompatibility = "17"
+    targetCompatibility = "17"
+
+    options.encoding = "UTF-8"
+}
+
+kotlin {
+    compilerOptions {
+        apiVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_2_0)
+        jvmTarget.set(JvmTarget.JVM_17)
+    }
+}

nms/v1_18R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/packet/versions/V1_18R1_Manager.kt

@@ -0,0 +1,33 @@
+package xyz.alexcrea.cuanvil.dependency.packet.versions
+
+import net.minecraft.network.protocol.game.ClientboundPlayerAbilitiesPacket
+import net.minecraft.world.entity.player.Abilities
+import org.bukkit.craftbukkit.v1_18_R1.entity.CraftPlayer
+import org.bukkit.entity.Player
+import xyz.alexcrea.cuanvil.dependency.packet.PacketManager
+import xyz.alexcrea.cuanvil.dependency.packet.PacketManagerBase
+
+class V1_18R1_Manager : PacketManagerBase(), PacketManager {
+    override val canSetInstantBuild: Boolean
+        get() = true
+
+    override fun setInstantBuild(player: Player, instantBuild: Boolean) {
+        val nmsPlayer = (player as CraftPlayer).handle
+        val playerAbilities = nmsPlayer.abilities
+        val sendedAbilities: Abilities
+        if (playerAbilities.instabuild == instantBuild) {
+            sendedAbilities = playerAbilities
+        } else {
+            sendedAbilities = Abilities()
+            sendedAbilities.invulnerable = playerAbilities.invulnerable
+            sendedAbilities.flying = playerAbilities.flying
+            sendedAbilities.mayfly = playerAbilities.mayfly
+            sendedAbilities.instabuild = instantBuild
+            sendedAbilities.mayBuild = playerAbilities.mayBuild
+            sendedAbilities.flyingSpeed = playerAbilities.flyingSpeed
+            sendedAbilities.walkingSpeed = playerAbilities.walkingSpeed
+        }
+        val packet = ClientboundPlayerAbilitiesPacket(sendedAbilities)
+        nmsPlayer.connection.send(packet)
+    }
+}

settings.gradle.kts

@@ -2,3 +2,5 @@ rootProject.name = "CustomAnvil"
 
 include("nms:nms-common")
 findProject(":nms:nms-common")?.name = "nms-common"
+include("nms:v1_18R1")
+findProject(":nms:v1_18R1")?.name = "v1_18R1"

src/main/java/xyz/alexcrea/cuanvil/update/UpdateUtils.java

@@ -1,5 +1,6 @@
 package xyz.alexcrea.cuanvil.update;
 
+import org.bukkit.Bukkit;
 import org.bukkit.configuration.file.FileConfiguration;
 
 import java.util.ArrayList;
@@ -7,9 +8,14 @@ import java.util.Arrays;
 import java.util.List;
 
 public class UpdateUtils {
-    public final static String MINECRAFT_VERSION_PATH = "lowMinecraftVersion";
+    public static final String MINECRAFT_VERSION_PATH = "lowMinecraftVersion";
 
-    static int[] readVersionFromString(String versionString){
+    public static int[] currentMinecraftVersion(){
+        String versionString = Bukkit.getServer().getBukkitVersion().split("-")[0];
+        return UpdateUtils.readVersionFromString(versionString);
+    }
+
+    public static int[] readVersionFromString(String versionString){
         String[] partialVersion = versionString.split("\\.");
         int[] versionParts = new int[]{0, 0, 0};
 

src/main/java/xyz/alexcrea/cuanvil/update/Update_1_21.java

@@ -1,7 +1,6 @@
 package xyz.alexcrea.cuanvil.update;
 
 import io.delilaheve.CustomAnvil;
-import org.bukkit.Bukkit;
 import org.bukkit.configuration.file.FileConfiguration;
 import xyz.alexcrea.cuanvil.config.ConfigHolder;
 
@@ -23,8 +22,7 @@ public class Update_1_21 {
             }
         }
 
-        String versionString = Bukkit.getServer().getBukkitVersion().split("-")[0];
-        int[] versionParts = UpdateUtils.readVersionFromString(versionString);
+        int[] versionParts = UpdateUtils.currentMinecraftVersion();
 
         // Test 1.21
         if((versionParts[0] >= 1) && (versionParts[1] >= 21)){

src/main/kotlin/io/delilaheve/CustomAnvil.kt

@@ -98,6 +98,12 @@ class CustomAnvil : JavaPlugin() {
         chatListener = ChatEventListener()
         server.pluginManager.registerEvents(chatListener, this)
 
+        // Load default configuration
+        if (!ConfigHolder.loadDefaultConfig()) {
+            logger.log(Level.SEVERE,"could not load default config.")
+            return
+        }
+
         // Load dependency
         DependencyManager.loadDependency()
 
@@ -113,12 +119,6 @@ class CustomAnvil : JavaPlugin() {
     }
 
     private fun loadEnchantmentSystem(){
-        // Load default configuration
-        if (!ConfigHolder.loadDefaultConfig()) {
-            logger.log(Level.SEVERE,"could not load default config.")
-            return
-        }
-
         // Register enchantments
         CAEnchantmentRegistry.getInstance().registerBukkit()
         DependencyManager.registerEnchantments()

src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt

@@ -14,7 +14,7 @@ object DependencyManager {
     fun loadDependency(){
         val pluginManager = Bukkit.getPluginManager()
 
-        // ProtocolLib dependency
+        // Packet Manager
         val forceProtocolib = ConfigHolder.DEFAULT_CONFIG.config.getBoolean("force_protocolib", false)
         packetManager = PacketManagerSelector.selectPacketManager(forceProtocolib)
 

src/main/kotlin/xyz/alexcrea/cuanvil/dependency/packet/PacketManagerSelector.kt

@@ -0,0 +1,67 @@
+package xyz.alexcrea.cuanvil.dependency.packet
+
+import org.bukkit.Bukkit
+import xyz.alexcrea.cuanvil.dependency.packet.versions.V1_18R1_Manager
+import xyz.alexcrea.cuanvil.update.UpdateUtils
+
+object PacketManagerSelector {
+    fun selectPacketManager(forceProtocolib: Boolean): PacketManager {
+        // Try to find version
+        return if (forceProtocolib)
+            protocolibIfPresent
+        else
+            versionSpecificManager ?: protocolibIfPresent
+    }
+
+    private val protocolibIfPresent: PacketManager
+        get() =
+            if (Bukkit.getPluginManager().isPluginEnabled("ProtocolLib"))
+                ProtocoLibWrapper()
+            else
+                NoPacketManager()
+    private val versionSpecificManager: PacketManager?
+        get() {
+            val versionParts = UpdateUtils.currentMinecraftVersion()
+            if (versionParts[0] != 1) return null;
+
+            return when (versionParts[1]) {
+                16 -> when (versionParts[2]) {
+                    4, 5 -> null // TODO V1_16R3 (if possible)
+                    else -> null
+                }
+
+                17 -> when (versionParts[2]) {
+                    0, 1 -> null // TODO V1_17R1 (if possible)
+                    else -> null
+                }
+
+                18 -> when (versionParts[2]) {
+                    0, 1 -> V1_18R1_Manager()
+                    2 -> null // TODO V1_18R2
+                    else -> null
+                }
+
+                19 -> when (versionParts[2]) {
+                    0, 1, 2 -> null // TODO V1_19R1
+                    3 -> null // TODO V1_19R2
+                    4 -> null // TODO V1_19R3
+                    else -> null
+                }
+
+                20 -> when (versionParts[2]) {
+                    0, 1 -> null // TODO V1_20R1
+                    2 -> null // TODO V1_20R2
+                    3, 4 -> null // TODO V1_20R3
+                    5, 6 -> null // TODO V1_20R4
+                    else -> null
+                }
+
+                21 -> when (versionParts[2]) {
+                    0 -> null // TODO V1_21R1
+                    else -> null
+                }
+
+                else -> null
+            }
+        }
+}

src/main/resources/config.yml

@@ -265,4 +265,10 @@ debug_log: false
 # Whether to show verbose debug logging
 debug_log_verbose: false
 
+# In case something when wrong with CustomAnvil packet manager.
+# If you see "missing class exception" or similar you may test this.
+# If enabled and Protocolib absent or disabled "Replace to expensive" will not work.
+# ProtocoLib may also be used if the server is in an "unsupported" version even if this option is disabled.
+force_protocolib: false
+
 configVersion: 1.4.5