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Paper/patches/server/0758-Lag-compensate-block-breaking.patch

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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 e311e1dd8b0e07b8787ec42a58c4e6559ac661ed..dbf8f1b605b8abbfd668e05a3e6fc004784f934a 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -605,4 +605,10 @@ 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 3ab74a721d9d9bec82a68a30bf523292a3038587..17a59fba538f8a7bdd96964c6acda94b33655d27 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -54,14 +54,28 @@ 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;
@@ -128,7 +142,7 @@ 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;
@@ -148,7 +162,7 @@ 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
}
}
@@ -156,6 +170,12 @@ 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);
@@ -224,7 +244,7 @@ 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;
iblockdata = this.level.getBlockState(pos);
@@ -277,12 +297,12 @@ 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
iblockdata = this.level.getBlockState(pos);
if (!iblockdata.isAir()) {
@@ -299,12 +319,18 @@ 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)) {
@@ -316,7 +342,7 @@ 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
}
}
@@ -324,7 +350,13 @@ 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
}
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