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PaperMC/patches/server/Properly-resend-entities.patch
Nassim Jahnke 10cba26ae2 Move around patches again
2024-12-05 11:18:29 +01:00

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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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
+++ b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
@@ -0,0 +0,0 @@ public class SynchedEntityData {
}
}
- private <T> SynchedEntityData.DataItem<T> getItem(EntityDataAccessor<T> key) {
+ public <T> SynchedEntityData.DataItem<T> getItem(EntityDataAccessor<T> key) { // Paper - public
return (SynchedEntityData.DataItem<T>) this.itemsById[key.id()]; // CraftBukkit - decompile error
}
@@ -0,0 +0,0 @@ public class SynchedEntityData {
}
}
+ // 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
+ public List<SynchedEntityData.DataValue<?>> packAll() {
+ final List<SynchedEntityData.DataValue<?>> list = new ArrayList<>();
+ for (final DataItem<?> dataItem : this.itemsById) {
+ list.add(dataItem.value());
+ }
+
+ return list;
+ }
+ // Paper end
+
public static class DataItem<T> {
final EntityDataAccessor<T> accessor;
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -0,0 +0,0 @@ public class ServerPlayerGameMode {
}
// Paper end - extend Player Interact cancellation
player.getBukkitEntity().updateInventory(); // SPIGOT-2867
+ this.player.resyncUsingItem(this.player); // Paper - Properly cancel usable items
return (event.useItemInHand() != Event.Result.ALLOW) ? InteractionResult.SUCCESS : InteractionResult.PASS;
} else if (this.gameModeForPlayer == GameType.SPECTATOR) {
MenuProvider itileinventory = iblockdata.getMenuProvider(world, blockposition);
@@ -0,0 +0,0 @@ public class ServerPlayerGameMode {
return enuminteractionresult;
} else {
+ // Paper start - Properly cancel usable items; Cancel only if cancelled + if the interact result is different from default response
+ if (this.interactResult && this.interactResult != cancelledItem) {
+ this.player.resyncUsingItem(this.player);
+ }
+ // Paper end - Properly cancel usable items
return InteractionResult.PASS;
}
}
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -0,0 +0,0 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
}
if (cancelled) {
+ this.player.resyncUsingItem(this.player); // Paper - Properly cancel usable items
this.player.getBukkitEntity().updateInventory(); // SPIGOT-2524
return;
}
@@ -0,0 +0,0 @@ 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)) {
- entity.getBukkitEntity().update(ServerGamePacketListenerImpl.this.player);
+ entity.resendPossiblyDesyncedEntityData(ServerGamePacketListenerImpl.this.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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -0,0 +0,0 @@ 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.refreshEntityData(player); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn
+ //player.refreshEntityData(player); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn // Paper - THIS IS NOT NEEDED ANYMORE
this.sendLevelInfo(player, worldserver1);
@@ -0,0 +0,0 @@ public abstract class PlayerList {
}
public void sendActiveEffects(LivingEntity entity, ServerGamePacketListenerImpl networkHandler) {
+ // Paper start - collect packets
+ this.sendActiveEffects(entity, networkHandler::send);
+ }
+ public void sendActiveEffects(LivingEntity entity, java.util.function.Consumer<Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> packetConsumer) {
+ // Paper end - collect packets
Iterator iterator = entity.getActiveEffects().iterator();
while (iterator.hasNext()) {
MobEffectInstance mobeffect = (MobEffectInstance) iterator.next();
- networkHandler.send(new ClientboundUpdateMobEffectPacket(entity.getId(), mobeffect, false));
+ packetConsumer.accept(new ClientboundUpdateMobEffectPacket(entity.getId(), mobeffect, false)); // Paper - collect packets
}
}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -0,0 +0,0 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
// CraftBukkit start
public void refreshEntityData(ServerPlayer to) {
- List<SynchedEntityData.DataValue<?>> list = this.getEntityData().getNonDefaultValues();
+ List<SynchedEntityData.DataValue<?>> list = this.entityData.packAll(); // Paper - Update EVERYTHING not just not default
- if (list != null) {
+ if (list != null && to.getBukkitEntity().canSee(this.getBukkitEntity())) { // Paper
to.connection.send(new ClientboundSetEntityDataPacket(this.getId(), list));
}
}
// CraftBukkit end
+ // Paper start
+ // This method should only be used if the data of an entity could have become desynced
+ // due to interactions on the client.
+ public void resendPossiblyDesyncedEntityData(net.minecraft.server.level.ServerPlayer player) {
+ if (player.getBukkitEntity().canSee(this.getBukkitEntity())) {
+ ServerLevel world = (net.minecraft.server.level.ServerLevel)this.level();
+ net.minecraft.server.level.ChunkMap.TrackedEntity tracker = world == null ? null : world.getChunkSource().chunkMap.entityMap.get(this.getId());
+ if (tracker == null) {
+ return;
+ }
+ final net.minecraft.server.level.ServerEntity serverEntity = tracker.serverEntity;
+ final List<net.minecraft.network.protocol.Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> list = new java.util.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<EntityDataAccessor<?>> keys, ServerPlayer to) {
+ if (!to.getBukkitEntity().canSee(this.getBukkitEntity())) {
+ return;
+ }
+
+ final List<SynchedEntityData.DataValue<?>> values = new java.util.ArrayList<>(keys.size());
+ for (final EntityDataAccessor<?> key : keys) {
+ final SynchedEntityData.DataItem<?> synchedValue = this.entityData.getItem(key);
+ values.add(synchedValue.value());
+ }
+
+ to.connection.send(new ClientboundSetEntityDataPacket(this.id, values));
+ }
+ // Paper end
public boolean equals(Object object) {
return object instanceof Entity ? ((Entity) object).id == this.id : false;
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -0,0 +0,0 @@ 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.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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Bucketable.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Bucketable.java
@@ -0,0 +0,0 @@ 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
- entity.getBukkitEntity().update((ServerPlayer) player); // We need to play out these packets as the client assumes the fish is gone
- entity.refreshEntityData((ServerPlayer) player); // Need to send data such as the display name to client
+ entity.resendPossiblyDesyncedEntityData((ServerPlayer) player); // Paper
return Optional.of(InteractionResult.FAIL);
}
entity.playSound(((Bucketable) entity).getPickupSound(), 1.0F, 1.0F);
diff --git a/src/main/java/net/minecraft/world/item/component/Consumable.java b/src/main/java/net/minecraft/world/item/component/Consumable.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/item/component/Consumable.java
+++ b/src/main/java/net/minecraft/world/item/component/Consumable.java
@@ -0,0 +0,0 @@ public record Consumable(float consumeSeconds, ItemUseAnimation animation, Holde
// CraftBukkit start
public void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack) {
+ final java.util.List<net.minecraft.network.protocol.Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> packets = new it.unimi.dsi.fastutil.objects.ObjectArrayList<>(); // Paper - properly resend entities - collect packets for bundle
itemstack.getAllOfType(ConsumableListener.class).forEach((consumablelistener) -> {
- consumablelistener.cancelUsingItem(entityplayer, itemstack);
+ consumablelistener.cancelUsingItem(entityplayer, itemstack, packets); // Paper - properly resend entities - collect packets for bundle
});
- entityplayer.server.getPlayerList().sendActivePlayerEffects(entityplayer);
+ entityplayer.server.getPlayerList().sendActiveEffects(entityplayer, packets::add); // Paper - properly resend entities - collect packets for bundle
+ entityplayer.connection.send(new net.minecraft.network.protocol.game.ClientboundBundlePacket(packets));
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/item/component/ConsumableListener.java b/src/main/java/net/minecraft/world/item/component/ConsumableListener.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/item/component/ConsumableListener.java
+++ b/src/main/java/net/minecraft/world/item/component/ConsumableListener.java
@@ -0,0 +0,0 @@ public interface ConsumableListener {
void onConsume(Level world, LivingEntity user, ItemStack stack, Consumable consumable);
- default void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack) {} // CraftBukkit
+ default void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack, java.util.List<net.minecraft.network.protocol.Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> collectedPackets) {} // CraftBukkit // Paper - properly resend entities - collect packets for bundle
}
diff --git a/src/main/java/net/minecraft/world/item/component/OminousBottleAmplifier.java b/src/main/java/net/minecraft/world/item/component/OminousBottleAmplifier.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/item/component/OminousBottleAmplifier.java
+++ b/src/main/java/net/minecraft/world/item/component/OminousBottleAmplifier.java
@@ -0,0 +0,0 @@ public record OminousBottleAmplifier(int value) implements ConsumableListener, T
@Override
public void onConsume(Level world, LivingEntity user, ItemStack stack, Consumable consumable) {
- user.addEffect(new MobEffectInstance(MobEffects.BAD_OMEN, 120000, this.value, false, false, true));
+ user.addEffect(new MobEffectInstance(MobEffects.BAD_OMEN, 120000, this.value, false, false, true)); // Paper - properly resend entities - diff on change for below
}
+ // Paper start - properly resend entities - collect packets for bundle
+ @Override
+ public void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack, java.util.List<net.minecraft.network.protocol.Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> collectedPackets) {
+ collectedPackets.add(new net.minecraft.network.protocol.game.ClientboundRemoveMobEffectPacket(entityplayer.getId(), MobEffects.BAD_OMEN));
+ }
+ // Paper end - properly resend entities - collect packets for bundle
@Override
public void addToTooltip(Item.TooltipContext context, Consumer<Component> tooltip, TooltipFlag type) {
diff --git a/src/main/java/net/minecraft/world/item/component/SuspiciousStewEffects.java b/src/main/java/net/minecraft/world/item/component/SuspiciousStewEffects.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/item/component/SuspiciousStewEffects.java
+++ b/src/main/java/net/minecraft/world/item/component/SuspiciousStewEffects.java
@@ -0,0 +0,0 @@ public record SuspiciousStewEffects(List<SuspiciousStewEffects.Entry> effects) i
// CraftBukkit start
@Override
- public void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack) {
+ public void cancelUsingItem(net.minecraft.server.level.ServerPlayer entityplayer, ItemStack itemstack, java.util.List<net.minecraft.network.protocol.Packet<? super net.minecraft.network.protocol.game.ClientGamePacketListener>> collectedPackets) { // Paper - properly resend entities - collect packets for bundle
for (SuspiciousStewEffects.Entry suspicioussteweffects_a : this.effects) {
- entityplayer.connection.send(new net.minecraft.network.protocol.game.ClientboundRemoveMobEffectPacket(entityplayer.getId(), suspicioussteweffects_a.effect()));
+ collectedPackets.add(new net.minecraft.network.protocol.game.ClientboundRemoveMobEffectPacket(entityplayer.getId(), suspicioussteweffects_a.effect())); // Paper - bundlize packets
}
}
// CraftBukkit end
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -0,0 +0,0 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
return;
}
- entityTracker.broadcast(this.getHandle().getAddEntityPacket(entityTracker.serverEntity));
+ // Paper start - resend possibly desynced entity instead of add entity packet
+ for (final ServerPlayerConnection connection : entityTracker.seenBy) {
+ this.getHandle().resendPossiblyDesyncedEntityData(connection.getPlayer());
+ }
+ // Paper end - resend possibly desynced entity instead of add entity packet
}
public void update(ServerPlayer player) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftItemFrame.java
@@ -0,0 +0,0 @@ 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) {
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