Port changes to 1.21

src/main/java/com/moulberry/axiom/integration/plotsquared/PlotSquaredIntegrationImpl.java

@@ -237,12 +237,12 @@ public class PlotSquaredIntegrationImpl {
                             BlockVector3 minPoint = region.getMinimumPoint();
                             BlockVector3 maxPoint = region.getMaximumPoint();
 
-                            int minPlotX = Math.max(minPoint.x(), minX);
+                            int minPlotX = Math.max(minPoint.getBlockX(), minX);
-                            int minPlotY = Math.max(minPoint.y(), minY);
+                            int minPlotY = Math.max(minPoint.getBlockY(), minY);
-                            int minPlotZ = Math.max(minPoint.z(), minZ);
+                            int minPlotZ = Math.max(minPoint.getBlockZ(), minZ);
-                            int maxPlotX = Math.min(maxPoint.x(), maxX);
+                            int maxPlotX = Math.min(maxPoint.getBlockX(), maxX);
-                            int maxPlotY = Math.min(maxPoint.y(), maxY);
+                            int maxPlotY = Math.min(maxPoint.getBlockY(), maxY);
-                            int maxPlotZ = Math.min(maxPoint.z(), maxZ);
+                            int maxPlotZ = Math.min(maxPoint.getBlockZ(), maxZ);
 
                             if (minPlotX > maxPlotX) continue;
                             if (minPlotY > maxPlotY) continue;

src/main/java/com/moulberry/axiom/integration/worldguard/WorldGuardIntegrationImpl.java

@@ -122,12 +122,12 @@ public class WorldGuardIntegrationImpl {
                     BlockVector3 regionMin = region.getMinimumPoint();
                     BlockVector3 regionMax = region.getMaximumPoint();
 
-                    int regionMinX = Math.max(regionMin.x(), cx*16) - minX;
+                    int regionMinX = Math.max(regionMin.getBlockX(), cx*16) - minX;
-                    int regionMinY = Math.max(regionMin.y(), cy*16) - minY;
+                    int regionMinY = Math.max(regionMin.getBlockY(), cy*16) - minY;
-                    int regionMinZ = Math.max(regionMin.z(), cz*16) - minZ;
+                    int regionMinZ = Math.max(regionMin.getBlockZ(), cz*16) - minZ;
-                    int regionMaxX = Math.min(regionMax.x(), cx*16+15) - minX;
+                    int regionMaxX = Math.min(regionMax.getBlockX(), cx*16+15) - minX;
-                    int regionMaxY = Math.min(regionMax.y(), cy*16+15) - minY;
+                    int regionMaxY = Math.min(regionMax.getBlockY(), cy*16+15) - minY;
-                    int regionMaxZ = Math.min(regionMax.z(), cz*16+15) - minZ;
+                    int regionMaxZ = Math.min(regionMax.getBlockZ(), cz*16+15) - minZ;
 
                     Box box = new Box(regionMinX, regionMinY, regionMinZ, regionMaxX, regionMaxY, regionMaxZ);
                     if (value == StateFlag.State.DENY) {

src/main/java/com/moulberry/axiom/packet/AxiomBigPayloadHandler.java

@@ -14,6 +14,7 @@ import io.papermc.paper.network.ConnectionEvent;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.Connection;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.level.ServerPlayer;
 import org.bukkit.entity.Player;
@@ -65,7 +66,7 @@ public class AxiomBigPayloadHandler extends MessageToMessageDecoder<ByteBuf> {
                 PacketHandler handler = this.packetHandlers.get(identifier);
                 if (handler != null) {
                     if (handler.handleAsync()) {
-                        handler.onReceive(player.getBukkitEntity(), buf);
+                        handler.onReceive(player.getBukkitEntity(), new RegistryFriendlyByteBuf(buf, player.registryAccess()));
                         success = true;
                     } else {
                         byte[] bytes = new byte[buf.writerIndex() - buf.readerIndex()];
@@ -73,7 +74,7 @@ public class AxiomBigPayloadHandler extends MessageToMessageDecoder<ByteBuf> {
                         Player bukkitPlayer = player.getBukkitEntity();
 
                         player.getServer().execute(() -> {
-                            FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(Unpooled.wrappedBuffer(bytes));
+                            RegistryFriendlyByteBuf friendlyByteBuf = new RegistryFriendlyByteBuf(Unpooled.wrappedBuffer(bytes), player.registryAccess());
                             try {
                                 handler.onReceive(bukkitPlayer, friendlyByteBuf);
                             } catch (Throwable t) {

src/main/java/com/moulberry/axiom/packet/PacketHandler.java

@@ -1,6 +1,7 @@
 package com.moulberry.axiom.packet;
 
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerPlayer;
 import org.bukkit.entity.Player;
 
@@ -10,6 +11,6 @@ public interface PacketHandler {
         return false;
     }
 
-    void onReceive(Player player, FriendlyByteBuf friendlyByteBuf);
+    void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf);
 
 }

src/main/java/com/moulberry/axiom/packet/WrapperPacketListener.java

@@ -3,6 +3,8 @@ package com.moulberry.axiom.packet;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.messaging.PluginMessageListener;
 import org.jetbrains.annotations.NotNull;
@@ -17,7 +19,7 @@ public class WrapperPacketListener implements PluginMessageListener {
 
     @Override
     public void onPluginMessageReceived(@NotNull String s, @NotNull Player player, @NotNull byte[] bytes) {
-        FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(Unpooled.wrappedBuffer(bytes));
+        RegistryFriendlyByteBuf friendlyByteBuf = new RegistryFriendlyByteBuf(Unpooled.wrappedBuffer(bytes), ((CraftPlayer)player).getHandle().registryAccess());
         try {
             this.packetHandler.onReceive(player, friendlyByteBuf);
         } catch (Throwable t) {

src/main/java/com/moulberry/axiom/packet/impl/BlueprintRequestPacketListener.java

@@ -10,6 +10,7 @@ import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.SharedConstants;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceLocation;
 import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
@@ -26,7 +27,7 @@ public class BlueprintRequestPacketListener implements PacketHandler {
     private static final ResourceLocation RESPONSE_PACKET_IDENTIFIER = VersionHelper.createResourceLocation("axiom:response_blueprint");
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.blueprint.request")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/DeleteEntityPacketListener.java

@@ -6,6 +6,7 @@ import com.moulberry.axiom.packet.PacketHandler;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
@@ -26,7 +27,7 @@ public class DeleteEntityPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.entity.delete", true)) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/HelloPacketListener.java

@@ -42,7 +42,7 @@ public class HelloPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.hasAxiomPermission(player)) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/ManipulateEntityPacketListener.java

@@ -13,6 +13,7 @@ import net.minecraft.core.Direction;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.Tag;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
@@ -80,7 +81,7 @@ public class ManipulateEntityPacketListener implements PacketHandler {
     private static final Rotation[] ROTATION_VALUES = Rotation.values();
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.entity.manipulate", true)) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/MarkerNbtRequestPacketListener.java

@@ -7,6 +7,7 @@ import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.Marker;
@@ -25,7 +26,7 @@ public class MarkerNbtRequestPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.entity.manipulate", true)) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/RequestChunkDataPacketListener.java

@@ -13,6 +13,7 @@ import net.minecraft.core.BlockPos;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.network.protocol.common.ClientboundCustomPayloadPacket;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
@@ -45,7 +46,7 @@ public class RequestChunkDataPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player bukkitPlayer, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player bukkitPlayer, RegistryFriendlyByteBuf friendlyByteBuf) {
         ServerPlayer player = ((CraftPlayer)bukkitPlayer).getHandle();
         long id = friendlyByteBuf.readLong();
 

src/main/java/com/moulberry/axiom/packet/impl/RequestEntityDataPacketListener.java

@@ -7,14 +7,14 @@ import com.moulberry.axiom.packet.PacketHandler;
 import io.netty.buffer.Unpooled;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.FriendlyByteBuf;
-import net.minecraft.network.protocol.game.ClientboundCustomPayloadPacket;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.player.Player;
 import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
 
 import java.util.*;
 
@@ -30,7 +30,7 @@ public class RequestEntityDataPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(org.bukkit.entity.Player bukkitPlayer, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(org.bukkit.entity.Player bukkitPlayer, RegistryFriendlyByteBuf friendlyByteBuf) {
         ServerPlayer player = ((CraftPlayer)bukkitPlayer).getHandle();
         long id = friendlyByteBuf.readLong();
 
@@ -102,7 +102,9 @@ public class RequestEntityDataPacketListener implements PacketHandler {
         friendlyByteBuf.writeBoolean(finished);
         friendlyByteBuf.writeMap(map, (buf, uuid) -> buf.writeUUID(uuid), (buf, nbt) -> buf.writeNbt(nbt));
 
-        player.connection.send(new ClientboundCustomPayloadPacket(RESPONSE_ID, friendlyByteBuf));
+        byte[] bytes = new byte[friendlyByteBuf.writerIndex()];
+        friendlyByteBuf.getBytes(0, bytes);
+        VersionHelper.sendCustomPayload(player, RESPONSE_ID, bytes);
     }
 
 }

src/main/java/com/moulberry/axiom/packet/impl/SetBlockBufferPacketListener.java

@@ -20,6 +20,7 @@ import net.minecraft.core.Registry;
 import net.minecraft.core.SectionPos;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.protocol.game.ClientboundChunksBiomesPacket;
 import net.minecraft.resources.ResourceKey;
@@ -42,7 +43,7 @@ import net.minecraft.world.level.chunk.PalettedContainer;
 import net.minecraft.world.level.levelgen.Heightmap;
 import net.minecraft.world.level.lighting.LightEngine;
 import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 import xyz.jpenilla.reflectionremapper.ReflectionRemapper;
 
@@ -76,7 +77,7 @@ public class SetBlockBufferPacketListener implements PacketHandler {
         return true;
     }
 
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         ServerPlayer serverPlayer = ((CraftPlayer)player).getHandle();
         MinecraftServer server = serverPlayer.getServer();
         if (server == null) return;

src/main/java/com/moulberry/axiom/packet/impl/SetBlockPacketListener.java

@@ -12,6 +12,7 @@ import net.minecraft.core.Holder;
 import net.minecraft.core.IdMapper;
 import net.minecraft.core.SectionPos;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.InteractionHand;
@@ -82,7 +83,7 @@ public class SetBlockPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player bukkitPlayer, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player bukkitPlayer, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(bukkitPlayer, "axiom.build.place")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetEditorViewsPacketListener.java

@@ -9,6 +9,7 @@ import com.moulberry.axiom.persistence.UUIDDataType;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import org.bukkit.entity.Player;
 import org.bukkit.persistence.PersistentDataContainer;
 import org.bukkit.persistence.PersistentDataType;
@@ -27,7 +28,7 @@ public class SetEditorViewsPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.editor.views")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetFlySpeedPacketListener.java

@@ -6,6 +6,7 @@ import com.moulberry.axiom.packet.PacketHandler;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
@@ -20,7 +21,7 @@ public class SetFlySpeedPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.player.speed")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetGamemodePacketListener.java

@@ -6,6 +6,7 @@ import com.moulberry.axiom.packet.PacketHandler;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.world.level.GameType;
 import org.bukkit.Bukkit;
 import org.bukkit.GameMode;
@@ -22,7 +23,7 @@ public class SetGamemodePacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.player.gamemode")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetHotbarSlotPacketListener.java

@@ -26,7 +26,7 @@ public class SetHotbarSlotPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.player.hotbar") || this.plugin.isMismatchedDataVersion(player.getUniqueId())) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetTimePacketListener.java

@@ -8,6 +8,7 @@ import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.GameRules;
@@ -26,7 +27,7 @@ public class SetTimePacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.world.time")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SetWorldPropertyListener.java

@@ -8,6 +8,7 @@ import com.moulberry.axiom.world_properties.server.ServerWorldPropertyHolder;
 import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceLocation;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.messaging.PluginMessageListener;
@@ -21,7 +22,7 @@ public class SetWorldPropertyListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.world.property")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SpawnEntityPacketListener.java

@@ -11,6 +11,7 @@ import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
@@ -45,7 +46,7 @@ public class SpawnEntityPacketListener implements PacketHandler {
     private static final Rotation[] ROTATION_VALUES = Rotation.values();
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.entity.spawn", true)) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/SwitchActiveHotbarPacketListener.java

@@ -28,7 +28,7 @@ public class SwitchActiveHotbarPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.player.hotbar") || this.plugin.isMismatchedDataVersion(player.getUniqueId())) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/TeleportPacketListener.java

@@ -8,6 +8,7 @@ import io.netty.buffer.Unpooled;
 import net.kyori.adventure.text.Component;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.level.Level;
 import org.bukkit.*;
@@ -25,7 +26,7 @@ public class TeleportPacketListener implements PacketHandler {
     }
 
     @Override
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.world.teleport")) {
             return;
         }

src/main/java/com/moulberry/axiom/packet/impl/UpdateAnnotationPacketListener.java

@@ -5,8 +5,9 @@ import com.moulberry.axiom.annotations.AnnotationUpdateAction;
 import com.moulberry.axiom.annotations.ServerAnnotations;
 import com.moulberry.axiom.packet.PacketHandler;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.server.level.ServerPlayer;
-import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 
 import java.util.ArrayList;
@@ -19,7 +20,7 @@ public class UpdateAnnotationPacketListener implements PacketHandler {
         this.plugin = plugin;
     }
 
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.allowAnnotations || !this.plugin.canUseAxiom(player, "axiom.annotation.create")) {
             friendlyByteBuf.writerIndex(friendlyByteBuf.readerIndex());
             return;

src/main/java/com/moulberry/axiom/packet/impl/UploadBlueprintPacketListener.java

@@ -8,9 +8,10 @@ import com.moulberry.axiom.blueprint.ServerBlueprintRegistry;
 import com.moulberry.axiom.packet.PacketHandler;
 import net.minecraft.SharedConstants;
 import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.RegistryFriendlyByteBuf;
 import net.minecraft.network.chat.Component;
 import net.minecraft.server.level.ServerPlayer;
-import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 
 import java.io.BufferedOutputStream;
@@ -31,7 +32,7 @@ public class UploadBlueprintPacketListener implements PacketHandler {
         return true;
     }
 
-    public void onReceive(Player player, FriendlyByteBuf friendlyByteBuf) {
+    public void onReceive(Player player, RegistryFriendlyByteBuf friendlyByteBuf) {
         if (!this.plugin.canUseAxiom(player, "axiom.blueprint.upload")) {
             friendlyByteBuf.writerIndex(friendlyByteBuf.readerIndex());
             return;