Paper/patches/server/0753-Lag-compensate-block-breaking.patch
Nassim Jahnke 1358d1e914
Updated Upstream (CraftBukkit/Spigot) (#7580)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
881e06e5 PR-725: Add Item Unlimited Lifetime APIs

CraftBukkit Changes:
74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall
64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn
2d760831 Increase outdated build delay
9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel
fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent
59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta

Spigot Changes:
ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue
e19ddabd PR-1011: Add Item Unlimited Lifetime APIs
34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
2022-03-13 08:47:54 +01:00

156 lines
9.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Fri, 14 Feb 2020 22:16:34 -0800
Subject: [PATCH] Lag compensate block breaking
Use time instead of ticks if ticks fall behind
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index cd601be6604fd81be8d58f6a46d39008fa8ecc20..cff9872882f9057ec2bfd44c15c1d66d8cefa721 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -619,4 +619,10 @@ public class PaperConfig {
}
}
}
+
+ public static boolean lagCompensateBlockBreaking;
+
+ private static void lagCompensateBlockBreaking() {
+ lagCompensateBlockBreaking = getBoolean("settings.lag-compensate-block-breaking", true);
+ }
}
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index b6eef41079120fffd63f06f681378b1b628b95e0..891199d02539fa46454cd0aa7c133637e5dc8235 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -56,14 +56,28 @@ public class ServerPlayerGameMode {
@Nullable
private GameType previousGameModeForPlayer;
private boolean isDestroyingBlock;
- private int destroyProgressStart;
+ private int destroyProgressStart; private long lastDigTime; // Paper - lag compensate block breaking
private BlockPos destroyPos;
private int gameTicks;
private boolean hasDelayedDestroy;
private BlockPos delayedDestroyPos;
- private int delayedTickStart;
+ private int delayedTickStart; private long hasDestroyedTooFastStartTime; // Paper - lag compensate block breaking
private int lastSentState;
+ // Paper start - lag compensate block breaking
+ private int getTimeDiggingLagCompensate() {
+ int lagCompensated = (int)((System.nanoTime() - this.lastDigTime) / (50L * 1000L * 1000L));
+ int tickDiff = this.gameTicks - this.destroyProgressStart;
+ return (com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking && lagCompensated > (tickDiff + 1)) ? lagCompensated : tickDiff; // add one to ensure we don't lag compensate unless we need to
+ }
+
+ private int getTimeDiggingTooFastLagCompensate() {
+ int lagCompensated = (int)((System.nanoTime() - this.hasDestroyedTooFastStartTime) / (50L * 1000L * 1000L));
+ int tickDiff = this.gameTicks - this.delayedTickStart;
+ return (com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking && lagCompensated > (tickDiff + 1)) ? lagCompensated : tickDiff; // add one to ensure we don't lag compensate unless we need to
+ }
+ // Paper end
+
public ServerPlayerGameMode(ServerPlayer player) {
this.gameModeForPlayer = GameType.DEFAULT_MODE;
this.destroyPos = BlockPos.ZERO;
@@ -130,7 +144,7 @@ public class ServerPlayerGameMode {
if (iblockdata == null || iblockdata.isAir()) { // Paper
this.hasDelayedDestroy = false;
} else {
- float f = this.incrementDestroyProgress(iblockdata, this.delayedDestroyPos, this.delayedTickStart);
+ float f = this.updateBlockBreakAnimation(iblockdata, this.delayedDestroyPos, this.getTimeDiggingTooFastLagCompensate()); // Paper - lag compensate destroying blocks
if (f >= 1.0F) {
this.hasDelayedDestroy = false;
@@ -150,7 +164,7 @@ public class ServerPlayerGameMode {
this.lastSentState = -1;
this.isDestroyingBlock = false;
} else {
- this.incrementDestroyProgress(iblockdata, this.destroyPos, this.destroyProgressStart);
+ this.updateBlockBreakAnimation(iblockdata, this.destroyPos, this.getTimeDiggingLagCompensate()); // Paper - lag compensate destroying
}
}
@@ -158,6 +172,12 @@ public class ServerPlayerGameMode {
private float incrementDestroyProgress(BlockState state, BlockPos pos, int i) {
int j = this.gameTicks - i;
+ // Paper start - change i (startTime) to totalTime
+ return this.updateBlockBreakAnimation(state, pos, j);
+ }
+ private float updateBlockBreakAnimation(BlockState state, BlockPos pos, int totalTime) {
+ int j = totalTime;
+ // Paper end
float f = state.getDestroyProgress(this.player, this.player.level, pos) * (float) (j + 1);
int k = (int) (f * 10.0F);
@@ -234,7 +254,7 @@ public class ServerPlayerGameMode {
return;
}
- this.destroyProgressStart = this.gameTicks;
+ this.destroyProgressStart = this.gameTicks; this.lastDigTime = System.nanoTime(); // Paper - lag compensate block breaking
float f = 1.0F;
iblockdata1 = this.level.getBlockState(pos);
@@ -287,12 +307,12 @@ public class ServerPlayerGameMode {
int j = (int) (f * 10.0F);
this.level.destroyBlockProgress(this.player.getId(), pos, j);
- this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "actual start of destroying"));
+ if (!com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking) this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "actual start of destroying"));
this.lastSentState = j;
}
} else if (action == ServerboundPlayerActionPacket.Action.STOP_DESTROY_BLOCK) {
if (pos.equals(this.destroyPos)) {
- int k = this.gameTicks - this.destroyProgressStart;
+ int k = this.getTimeDiggingLagCompensate(); // Paper - lag compensate block breaking
iblockdata1 = this.level.getBlockState(pos);
if (!iblockdata1.isAir()) {
@@ -309,12 +329,18 @@ public class ServerPlayerGameMode {
this.isDestroyingBlock = false;
this.hasDelayedDestroy = true;
this.delayedDestroyPos = pos;
- this.delayedTickStart = this.destroyProgressStart;
+ this.delayedTickStart = this.destroyProgressStart; this.hasDestroyedTooFastStartTime = this.lastDigTime; // Paper - lag compensate block breaking
}
}
}
+ // Paper start - this can cause clients on a lagging server to think they're not currently destroying a block
+ if (com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking) {
+ this.player.connection.send(new ClientboundBlockUpdatePacket(this.level, pos));
+ } else {
this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "stopped destroying"));
+ }
+ // Paper end - this can cause clients on a lagging server to think they're not currently destroying a block
} else if (action == ServerboundPlayerActionPacket.Action.ABORT_DESTROY_BLOCK) {
this.isDestroyingBlock = false;
if (!Objects.equals(this.destroyPos, pos) && !BlockPos.ZERO.equals(this.destroyPos)) {
@@ -326,7 +352,7 @@ public class ServerPlayerGameMode {
}
this.level.destroyBlockProgress(this.player.getId(), pos, -1);
- this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "aborted destroying"));
+ if (!com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking) this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "aborted destroying")); // Paper - this can cause clients on a lagging server to think they stopped destroying a block they're currently destroying
CraftEventFactory.callBlockDamageAbortEvent(this.player, pos, this.player.getInventory().getSelected()); // CraftBukkit
}
@@ -338,7 +364,13 @@ public class ServerPlayerGameMode {
public void destroyAndAck(BlockPos pos, ServerboundPlayerActionPacket.Action action, String reason) {
if (this.destroyBlock(pos)) {
+ // Paper start - this can cause clients on a lagging server to think they're not currently destroying a block
+ if (com.destroystokyo.paper.PaperConfig.lagCompensateBlockBreaking) {
+ this.player.connection.send(new ClientboundBlockUpdatePacket(this.level, pos));
+ } else {
this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, reason));
+ }
+ // Paper end - this can cause clients on a lagging server to think they're not currently destroying a block
} else {
this.player.connection.send(new ClientboundBlockUpdatePacket(this.level, pos)); // CraftBukkit - SPIGOT-5196
}