geforkt von Mirrors/Paper
9271ee7643
In general, the client now has an acknowledgment system that will cause block changes made by the client to be reverted correctly. Essentially: The client enters a "prediction" stage, where any block changes made will have its old blockstate captured (this is referred to as "server state"). If you update blocks during this stage, the client will update this captured server state as long as they're still currently predicting. After prediction is done (via an ack packet) all captured blockstates are reverted to their captured server state. This means that if the server actually updated a block and send a block update packet, it's correctly set, while if a block wasn't updated on the server but WAS updated on the client (server state wasn't updated), that change will be reverted. It should be noted that this system does not yet support block entities, so those still need to be resynced when needed. I discovered this when noticing that blocks broken outside of the player's valid interaction distance are still properly reverted, even though the server doesn't send any block updates, only an ack packet.
92 Zeilen
5.5 KiB
Diff
92 Zeilen
5.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
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Date: Sat, 25 Jun 2022 19:45:20 -0400
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Subject: [PATCH] Send block entities after destroy prediction
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Minecraft's prediction system does not handle block entities, so if we are manually sending block entities during
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block breaking we need to set it after the prediction is finished. This fixes block entities not showing when cancelling the BlockBreakEvent.
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diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
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index 3fe747fdc4500bd65029446f63e314031d71ed4a..19573bfb05d7f9641964c76e6670e4a7658a1bbd 100644
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--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
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+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
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@@ -62,6 +62,8 @@ public class ServerPlayerGameMode {
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private BlockPos delayedDestroyPos;
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private int delayedTickStart;
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private int lastSentState;
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+ public boolean captureSentBlockEntities = false; // Paper
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+ public boolean capturedBlockEntity = false; // Paper
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public ServerPlayerGameMode(ServerPlayer player) {
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this.gameModeForPlayer = GameType.DEFAULT_MODE;
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@@ -188,10 +190,7 @@ public class ServerPlayerGameMode {
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this.player.connection.send(new ClientboundBlockUpdatePacket(pos, this.level.getBlockState(pos)));
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this.debugLogging(pos, false, sequence, "may not interact");
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// Update any tile entity data for this block
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- BlockEntity tileentity = this.level.getBlockEntity(pos);
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- if (tileentity != null) {
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- this.player.connection.send(tileentity.getUpdatePacket());
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- }
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+ capturedBlockEntity = true; // Paper - send block entity after predicting
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// CraftBukkit end
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return;
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}
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@@ -202,10 +201,7 @@ public class ServerPlayerGameMode {
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// Let the client know the block still exists
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this.player.connection.send(new ClientboundBlockUpdatePacket(this.level, pos));
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// Update any tile entity data for this block
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- BlockEntity tileentity = this.level.getBlockEntity(pos);
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- if (tileentity != null) {
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- this.player.connection.send(tileentity.getUpdatePacket());
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- }
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+ capturedBlockEntity = true; // Paper - send block entity after predicting
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return;
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}
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// CraftBukkit end
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@@ -389,10 +385,12 @@ public class ServerPlayerGameMode {
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}
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// Update any tile entity data for this block
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+ if (!captureSentBlockEntities) { // Paper - Toggle this location for capturing as this is used for api
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BlockEntity tileentity = this.level.getBlockEntity(pos);
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if (tileentity != null) {
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this.player.connection.send(tileentity.getUpdatePacket());
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}
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+ } else {capturedBlockEntity = true;} // Paper end
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return false;
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}
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}
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index ffc6b7e7349ea1088b9ed5e13686d7bd9483aa1c..372015adb4f198c131d1a5f239e75f862ab5fdd7 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -1752,8 +1752,28 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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return;
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}
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// Paper end - Don't allow digging in unloaded chunks
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+ // Paper start - send block entities after prediction
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+ this.player.gameMode.capturedBlockEntity = false;
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+ this.player.gameMode.captureSentBlockEntities = true;
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+ // Paper end - send block entities after prediction
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this.player.gameMode.handleBlockBreakAction(blockposition, packetplayinblockdig_enumplayerdigtype, packet.getDirection(), this.player.level().getMaxBuildHeight(), packet.getSequence());
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this.player.connection.ackBlockChangesUpTo(packet.getSequence());
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+ // Paper start - send block entities after prediction
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+ this.player.gameMode.captureSentBlockEntities = false;
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+ // If a block entity was modified speedup the block change ack to avoid the block entity
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+ // being overriden.
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+ if (this.player.gameMode.capturedBlockEntity) {
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+ // manually tick
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+ this.send(new ClientboundBlockChangedAckPacket(this.ackBlockChangesUpTo));
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+ this.player.connection.ackBlockChangesUpTo = -1;
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+
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+ this.player.gameMode.capturedBlockEntity = false;
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+ BlockEntity tileentity = this.player.level().getBlockEntity(blockposition);
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+ if (tileentity != null) {
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+ this.player.connection.send(tileentity.getUpdatePacket());
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+ }
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+ }
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+ // Paper end - send block entities after prediction
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return;
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default:
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throw new IllegalArgumentException("Invalid player action");
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