From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com> Date: Wed, 7 Dec 2022 17:25:19 -0500 Subject: [PATCH] Properly resend entities This resolves some issues which caused entities to not be resent correctly. Entities that are interacted with need to be resent to the client, so we resend all the entity data to the player whilst making sure not to clear dirty entries from the tracker. This makes sure that values will be correctly updated to other players. This also adds utilities to aid in further preventing entity desyncs. This also also fixes the bug causing cancelling PlayerInteractEvent to cause items to continue to be used despite being cancelled on the server. For example, items being consumed but never finishing, shields being put up, etc. The underlying issue of this is that the client modifies their synced data values, and so we have to (forcibly) resend them in order for the client to reset their using item state. See: https://github.com/PaperMC/Paper/pull/1896 == AT == public net.minecraft.server.level.ChunkMap$TrackedEntity serverEntity diff --git a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java index 07a362f9e485d0d507f16f1dda1ac84ade07ab27..58b602e550258c1062ee940bc46538dac95d8979 100644 --- a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java +++ b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java @@ -275,14 +275,63 @@ public class SynchedEntityData { // CraftBukkit start public void refresh(ServerPlayer to) { if (!this.isEmpty()) { - List> list = this.getNonDefaultValues(); + List> list = this.packAll(); // Paper - Update EVERYTHING not just not default if (list != null) { + if (to.getBukkitEntity().canSee(this.entity.getBukkitEntity())) { // Paper to.connection.send(new ClientboundSetEntityDataPacket(this.entity.getId(), list)); + } // Paper } } } // CraftBukkit end + // Paper start + // We need to pack all as we cannot rely on "non default values" or "dirty" ones. + // Because these values can possibly be desynced on the client. + @Nullable + private List> packAll() { + if (this.isEmpty()) { + return null; + } + + List> list = new ArrayList<>(); + for (DataItem dataItem : this.itemsById.values()) { + list.add(dataItem.value()); + } + + return list; + } + + // This method should only be used if the data of an entity could have became desynced + // due to interactions on the client. + public void resendPossiblyDesyncedEntity(ServerPlayer player) { + if (this.entity.tracker == null) { + return; + } + + if (player.getBukkitEntity().canSee(entity.getBukkitEntity())) { + net.minecraft.server.level.ServerEntity serverEntity = this.entity.tracker.serverEntity; + + List> list = new ArrayList<>(); + serverEntity.sendPairingData(player, list::add); + player.connection.send(new net.minecraft.network.protocol.game.ClientboundBundlePacket(list)); + } + } + + // This method allows you to specifically resend certain data accessor keys to the client + public void resendPossiblyDesyncedDataValues(List> keys, ServerPlayer to) { + if (!to.getBukkitEntity().canSee(this.entity.getBukkitEntity())) { + return; + } + List> values = new ArrayList<>(keys.size()); + for (EntityDataAccessor key : keys) { + SynchedEntityData.DataItem synchedValue = this.getItem(key); + values.add(synchedValue.value()); + } + + to.connection.send(new ClientboundSetEntityDataPacket(this.entity.getId(), values)); + } + // Paper end public static class DataItem { diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java index 692a01b52a71e26887ee42cbd5fd64b0a81bfc99..ef3048a4748113538a0ee0af5b526b2cd51d5c29 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java @@ -561,6 +561,7 @@ public class ServerPlayerGameMode { } // Paper end - extend Player Interact cancellation player.getBukkitEntity().updateInventory(); // SPIGOT-2867 + this.player.resyncUsingItem(this.player); // Paper - Properly cancel usable items enuminteractionresult = (event.useItemInHand() != Event.Result.ALLOW) ? InteractionResult.SUCCESS : InteractionResult.PASS; } else if (this.gameModeForPlayer == GameType.SPECTATOR) { MenuProvider itileinventory = iblockdata.getMenuProvider(world, blockposition); @@ -604,6 +605,11 @@ public class ServerPlayerGameMode { return enuminteractionresult1; } + // Paper start - Properly cancel usable items; Cancel only if cancelled + if the interact result is different from default response + else if (this.interactResult && this.interactResult != cancelledItem) { + this.player.resyncUsingItem(this.player); + } + // Paper end - Properly cancel usable items } return enuminteractionresult; // CraftBukkit end diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java index d0ae2c485b0e37406633c79043bd833a8a6b3e2d..b8db3c3a5870e9d7dbba38caf7c9e1c1f3849bde 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -1990,6 +1990,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl } if (cancelled) { + this.player.resyncUsingItem(this.player); // Paper - Properly cancel usable items this.player.getBukkitEntity().updateInventory(); // SPIGOT-2524 return; } @@ -2708,7 +2709,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl // Entity in bucket - SPIGOT-4048 and SPIGOT-6859a if ((entity instanceof Bucketable && entity instanceof LivingEntity && origItem != null && origItem.asItem() == Items.WATER_BUCKET) && (event.isCancelled() || ServerGamePacketListenerImpl.this.player.getInventory().getSelected() == null || ServerGamePacketListenerImpl.this.player.getInventory().getSelected().getItem() != origItem)) { - ServerGamePacketListenerImpl.this.send(new ClientboundAddEntityPacket(entity)); + entity.getEntityData().resendPossiblyDesyncedEntity(player); // Paper - The entire mob gets deleted, so resend it. ServerGamePacketListenerImpl.this.player.containerMenu.sendAllDataToRemote(); } diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java index 97b0119ac71284b3a223c089bec26d87a01d3b25..1e5f709115007ff19901c0a6c3cf884d9e4d3a6c 100644 --- a/src/main/java/net/minecraft/server/players/PlayerList.java +++ b/src/main/java/net/minecraft/server/players/PlayerList.java @@ -391,7 +391,7 @@ public abstract class PlayerList { ((ServerLevel)player.level()).getChunkSource().chunkMap.addEntity(player); // Paper - Fire PlayerJoinEvent when Player is actually ready; track entity now // CraftBukkit end - player.getEntityData().refresh(player); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn + //player.getEntityData().refresh(player); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn Paper - THIS IS NOT NEEDED ANYMORE this.sendLevelInfo(player, worldserver1); diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java index a9d549d1f35928b7e9220e1e2e4ac30f3199ba2d..28b4e9ebc35058c3e094c1f8bd87130e288cea33 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -3844,6 +3844,11 @@ public abstract class LivingEntity extends Entity implements Attackable { return ((Byte) this.entityData.get(LivingEntity.DATA_LIVING_ENTITY_FLAGS) & 2) > 0 ? InteractionHand.OFF_HAND : InteractionHand.MAIN_HAND; } + // Paper start - Properly cancel usable items + public void resyncUsingItem(ServerPlayer serverPlayer) { + this.getEntityData().resendPossiblyDesyncedDataValues(java.util.List.of(DATA_LIVING_ENTITY_FLAGS), serverPlayer); + } + // Paper end - Properly cancel usable items private void updatingUsingItem() { if (this.isUsingItem()) { if (ItemStack.isSameItem(this.getItemInHand(this.getUsedItemHand()), this.useItem)) { diff --git a/src/main/java/net/minecraft/world/entity/animal/Bucketable.java b/src/main/java/net/minecraft/world/entity/animal/Bucketable.java index a1bfd700cd4c39e4bb1b9c140b54b7c82cd8b32c..205b52e486123aa23a1469de896ab1ec2e70ca13 100644 --- a/src/main/java/net/minecraft/world/entity/animal/Bucketable.java +++ b/src/main/java/net/minecraft/world/entity/animal/Bucketable.java @@ -110,8 +110,7 @@ public interface Bucketable { itemstack1 = CraftItemStack.asNMSCopy(playerBucketFishEvent.getEntityBucket()); if (playerBucketFishEvent.isCancelled()) { ((ServerPlayer) player).containerMenu.sendAllDataToRemote(); // We need to update inventory to resync client's bucket - ((ServerPlayer) player).connection.send(new ClientboundAddEntityPacket(entity)); // We need to play out these packets as the client assumes the fish is gone - entity.getEntityData().refresh((ServerPlayer) player); // Need to send data such as the display name to client + entity.getEntityData().resendPossiblyDesyncedEntity((ServerPlayer) player); // Paper return Optional.of(InteractionResult.FAIL); } entity.playSound(((Bucketable) entity).getPickupSound(), 1.0F, 1.0F); diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java index 76193067a21ff962cf2634b36d0ddf3eff8f85d7..e8e4489bcd64fde1b3226bdc7a7cc612508bda3f 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java @@ -1000,7 +1000,11 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity { return; } - entityTracker.broadcast(this.getHandle().getAddEntityPacket()); + // Paper start, resend possibly desynced entity instead of add entity packet + for (ServerPlayerConnection playerConnection : entityTracker.seenBy) { + this.getHandle().getEntityData().resendPossiblyDesyncedEntity(playerConnection.getPlayer()); + } + // Paper end } private static PermissibleBase getPermissibleBase() { diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java index 0801bcdee8fcff0d388d302387e4f1d587e0a283..2fcd9b836d42e3549a3b6b921c57a4c103146dff 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java @@ -39,9 +39,11 @@ public class CraftItemFrame extends CraftHanging implements ItemFrame { protected void update() { super.update(); + // Paper start, don't mark as dirty as this is handled in super.update() // mark dirty, so that the client gets updated with item and rotation - this.getHandle().getEntityData().markDirty(net.minecraft.world.entity.decoration.ItemFrame.DATA_ITEM); - this.getHandle().getEntityData().markDirty(net.minecraft.world.entity.decoration.ItemFrame.DATA_ROTATION); + //this.getHandle().getEntityData().markDirty(net.minecraft.world.entity.decoration.ItemFrame.DATA_ITEM); + //this.getHandle().getEntityData().markDirty(net.minecraft.world.entity.decoration.ItemFrame.DATA_ROTATION); + // Paper end // update redstone if (!this.getHandle().generation) {