1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 23 Sep 2023 22:05:35 -0700
Subject: [PATCH] Lag compensation ticks
Areas affected by lag comepnsation:
- Block breaking and destroying
- Eating food items
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 1adcbfb16ea1fe3378cde7c53e8868840eade963..5f3b35f0dbd9e78ad18ef5cf7be1a807beffeaf1 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -318,6 +318,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
public volatile Thread shutdownThread; // Paper
public volatile boolean abnormalExit = false; // Paper
+ public static final long SERVER_INIT = System.nanoTime(); // Paper - Lag compensation
public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) {
AtomicReference<S> atomicreference = new AtomicReference();
@@ -1757,6 +1758,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - BlockPhysicsEvent
worldserver.hasEntityMoveEvent = io.papermc.paper.event.entity.EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - Add EntityMoveEvent
net.minecraft.world.level.block.entity.HopperBlockEntity.skipHopperEvents = worldserver.paperConfig().hopper.disableMoveEvent || org.bukkit.event.inventory.InventoryMoveItemEvent.getHandlerList().getRegisteredListeners().length == 0; // Paper - Perf: Optimize Hoppers
+ worldserver.updateLagCompensationTick(); // Paper - lag compensation
this.profiler.push(() -> {
String s = String.valueOf(worldserver);
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 285580485b60ca4cd95a5d8ff807cb05dbe38d39..5d79cabecc29b15ec4e71589fdbb7dc5d658d327 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -570,6 +570,17 @@ public class ServerLevel extends Level implements WorldGenLevel {
return player != null && player.level() == this ? player : null;
}
// Paper end - optimise getPlayerByUUID
+ // Paper start - lag compensation
+ private long lagCompensationTick = net.minecraft.server.MinecraftServer.SERVER_INIT;
+
+ public long getLagCompensationTick() {
+ return this.lagCompensationTick;
+ }
+
+ public void updateLagCompensationTick() {
+ this.lagCompensationTick = (System.nanoTime() - net.minecraft.server.MinecraftServer.SERVER_INIT) / (java.util.concurrent.TimeUnit.MILLISECONDS.toNanos(50L));
+ }
+ // Paper end - lag compensation
// Add env and gen to constructor, IWorldDataServer -> WorldDataServer
public ServerLevel(MinecraftServer minecraftserver, Executor executor, LevelStorageSource.LevelStorageAccess convertable_conversionsession, PrimaryLevelData iworlddataserver, ResourceKey<Level> resourcekey, LevelStem worlddimension, ChunkProgressListener worldloadlistener, boolean flag, long i, List<CustomSpawner> list, boolean flag1, @Nullable RandomSequences randomsequences, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider) {
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index f168044d36f22080504da171e5ed31a6f02385ba..5cedce1f432f6b809b25269242a16477682c824f 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -127,7 +127,7 @@ public class ServerPlayerGameMode {
}
public void tick() {
- this.gameTicks = MinecraftServer.currentTick; // CraftBukkit;
+ this.gameTicks = (int)this.level.getLagCompensationTick(); // CraftBukkit; // Paper - lag compensation
BlockState iblockdata;
if (this.hasDelayedDestroy) {
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 2d375fc98e72246f6a640c390cb50d055fb59f8b..bad6a69246f6b0a4ada222b820f16469f91b0534 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3833,6 +3833,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.resendPossiblyDesyncedDataValues(java.util.List.of(DATA_LIVING_ENTITY_FLAGS), serverPlayer);
}
// Paper end - Properly cancel usable items
+ // Paper start - lag compensate eating
+ protected long eatStartTime;
+ protected int totalEatTimeTicks;
+ // Paper end - lag compensate eating
private void updatingUsingItem() {
if (this.isUsingItem()) {
if (ItemStack.isSameItem(this.getItemInHand(this.getUsedItemHand()), this.useItem)) {
@@ -3851,7 +3855,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.triggerItemUseEffects(stack, 5);
}
- if (--this.useItemRemaining == 0 && !this.level().isClientSide && !stack.useOnRelease()) {
+ // Paper start - lag compensate eating
+ // we add 1 to the expected time to avoid lag compensating when we should not
+ boolean shouldLagCompensate = this.useItem.getItem().components().has(DataComponents.FOOD) && this.eatStartTime != -1 && (System.nanoTime() - this.eatStartTime) > ((1 + this.totalEatTimeTicks) * 50 * (1000 * 1000));
+ if ((--this.useItemRemaining == 0 || shouldLagCompensate) && !this.level().isClientSide && !stack.useOnRelease()) {
+ this.useItemRemaining = 0;
+ // Paper end - lag compensate eating
this.completeUsingItem();
}
@@ -3897,7 +3906,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
if (!itemstack.isEmpty() && !this.isUsingItem() || forceUpdate) { // Paper - Prevent consuming the wrong itemstack
this.useItem = itemstack;
- this.useItemRemaining = itemstack.getUseDuration();
+ // Paper start - lag compensate eating
+ this.useItemRemaining = this.totalEatTimeTicks = itemstack.getUseDuration();
+ this.eatStartTime = System.nanoTime();
+ // Paper end - lag compensate eating
if (!this.level().isClientSide) {
this.setLivingEntityFlag(1, true);
this.setLivingEntityFlag(2, hand == InteractionHand.OFF_HAND);
@@ -3922,7 +3934,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
} else if (!this.isUsingItem() && !this.useItem.isEmpty()) {
this.useItem = ItemStack.EMPTY;
- this.useItemRemaining = 0;
+ // Paper start - lag compensate eating
+ this.useItemRemaining = this.totalEatTimeTicks = 0;
+ this.eatStartTime = -1L;
+ // Paper end - lag compensate eating
}
}
@@ -4057,7 +4072,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
this.useItem = ItemStack.EMPTY;
- this.useItemRemaining = 0;
+ // Paper start - lag compensate eating
+ this.useItemRemaining = this.totalEatTimeTicks = 0;
+ this.eatStartTime = -1L;
+ // Paper end - lag compensate eating
}
public boolean isBlocking() {
|
