Increase protocol version to 6, implement PlayerInteractEvent in SetBlockPacketListener

src/main/java/com/moulberry/axiom/AxiomConstants.java

@@ -12,7 +12,7 @@ public class AxiomConstants {
         }
     }
 
-    public static final int API_VERSION = 5;
+    public static final int API_VERSION = 6;
     public static final NamespacedKey ACTIVE_HOTBAR_INDEX = new NamespacedKey("axiom", "active_hotbar_index");
     public static final NamespacedKey HOTBAR_DATA = new NamespacedKey("axiom", "hotbar_data");
 

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

@@ -8,6 +8,8 @@ import net.minecraft.core.SectionPos;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.InteractionHand;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntity;
@@ -16,9 +18,14 @@ import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.LevelChunkSection;
 import net.minecraft.world.level.levelgen.Heightmap;
 import net.minecraft.world.level.lighting.LightEngine;
+import net.minecraft.world.phys.BlockHitResult;
 import org.bukkit.Bukkit;
+import org.bukkit.block.BlockFace;
+import org.bukkit.craftbukkit.v1_20_R1.block.CraftBlock;
 import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
 import org.bukkit.entity.Player;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.plugin.messaging.PluginMessageListener;
 import org.jetbrains.annotations.NotNull;
 import xyz.jpenilla.reflectionremapper.ReflectionRemapper;
@@ -61,17 +68,49 @@ public class SetBlockPacketListener implements PluginMessageListener {
 
         // Read packet
         FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(Unpooled.wrappedBuffer(message));
-        BlockPos blockPos = friendlyByteBuf.readBlockPos();
+        Map<BlockPos, BlockState> blocks = friendlyByteBuf.readMap(FriendlyByteBuf::readBlockPos, buf -> buf.readById(Block.BLOCK_STATE_REGISTRY));
-        BlockState blockState = friendlyByteBuf.readById(Block.BLOCK_STATE_REGISTRY);
         boolean updateNeighbors = friendlyByteBuf.readBoolean();
-        int sequenceId = friendlyByteBuf.readInt();
+
+        int reason = friendlyByteBuf.readVarInt();
+        boolean breaking = friendlyByteBuf.readBoolean();
+        BlockHitResult blockHit = friendlyByteBuf.readBlockHitResult();
+        InteractionHand hand = friendlyByteBuf.readEnum(InteractionHand.class);
+        int sequenceId = friendlyByteBuf.readVarInt();
 
         ServerPlayer player = ((CraftPlayer)bukkitPlayer).getHandle();
 
+        org.bukkit.inventory.ItemStack heldItem;
+        if (hand == InteractionHand.MAIN_HAND) {
+            heldItem = bukkitPlayer.getInventory().getItemInMainHand();
+        } else {
+            heldItem = bukkitPlayer.getInventory().getItemInOffHand();
+        }
+
+        org.bukkit.block.Block blockClicked = bukkitPlayer.getWorld().getBlockAt(blockHit.getBlockPos().getX(),
+            blockHit.getBlockPos().getY(), blockHit.getBlockPos().getZ());
+
+        BlockFace blockFace = CraftBlock.notchToBlockFace(blockHit.getDirection());
+
+        // Call interact event
+        PlayerInteractEvent playerInteractEvent = new PlayerInteractEvent(bukkitPlayer,
+            breaking ? Action.LEFT_CLICK_BLOCK : Action.RIGHT_CLICK_BLOCK, heldItem, blockClicked, blockFace);
+        if (!playerInteractEvent.callEvent()) {
+            if (sequenceId >= 0) {
+                player.connection.ackBlockChangesUpTo(sequenceId);
+            }
+            return;
+        }
+
         // Update blocks
         if (updateNeighbors) {
-            player.level().setBlock(blockPos, blockState, 3);
+            for (Map.Entry<BlockPos, BlockState> entry : blocks.entrySet()) {
+                player.level().setBlock(entry.getKey(), entry.getValue(), 3);
+            }
         } else {
+            for (Map.Entry<BlockPos, BlockState> entry : blocks.entrySet()) {
+                BlockPos blockPos = entry.getKey();
+                BlockState blockState = entry.getValue();
+
                 int bx = blockPos.getX();
                 int by = blockPos.getY();
                 int bz = blockPos.getZ();
@@ -154,6 +193,7 @@ public class SetBlockPacketListener implements PluginMessageListener {
                     level.getChunkSource().getLightEngine().updateSectionStatus(SectionPos.of(cx, cy, cz), nowHasOnlyAir);
                 }
             }
+        }
 
         if (sequenceId >= 0) {
             player.connection.ackBlockChangesUpTo(sequenceId);