mirror of
https://github.com/PaperMC/Paper.git
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130 lines
7.9 KiB
Diff
130 lines
7.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 23 Sep 2023 22:05:35 -0700
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Subject: [PATCH] Lag compensation ticks
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Areas affected by lag comepnsation:
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- Block breaking and destroying
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- Eating food items
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index a7fb5d121a9fd59d5a3951075e975533721cb87f..90ae7e8c81f6a9ede8aeaeec3bf784023522cefc 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -311,6 +311,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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public volatile Thread shutdownThread; // Paper
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public volatile boolean abnormalExit = false; // Paper
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+ public static final long SERVER_INIT = System.nanoTime(); // Paper - Lag compensation
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public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) {
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AtomicReference<S> atomicreference = new AtomicReference();
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@@ -1690,6 +1691,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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Iterator iterator = this.getAllLevels().iterator(); // Paper - Throw exception on world create while being ticked; move down
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while (iterator.hasNext()) {
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ServerLevel worldserver = (ServerLevel) iterator.next();
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+ worldserver.updateLagCompensationTick(); // Paper - lag compensation
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worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - BlockPhysicsEvent
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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
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worldserver.hasEntityMoveEvent = io.papermc.paper.event.entity.EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - Add EntityMoveEvent
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index ab2e84f85da7931e133ad5f0d2686cd1738f6ea1..5bbfb1af24e13a9e6a02ad8c36bb504a17f06398 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -565,6 +565,17 @@ public class ServerLevel extends Level implements WorldGenLevel {
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return player != null && player.level() == this ? player : null;
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}
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// Paper end - optimise getPlayerByUUID
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+ // Paper start - lag compensation
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+ private long lagCompensationTick = net.minecraft.server.MinecraftServer.SERVER_INIT;
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+
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+ public long getLagCompensationTick() {
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+ return this.lagCompensationTick;
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+ }
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+
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+ public void updateLagCompensationTick() {
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+ this.lagCompensationTick = (System.nanoTime() - net.minecraft.server.MinecraftServer.SERVER_INIT) / (java.util.concurrent.TimeUnit.MILLISECONDS.toNanos(50L));
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+ }
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+ // Paper end - lag compensation
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// Add env and gen to constructor, IWorldDataServer -> WorldDataServer
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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) {
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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 83e017efd15d0ecaffc327f02d6d5330c8ed6937..cfd4ac06a9af6bf3fac293110482e1df690e075e 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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@@ -124,7 +124,7 @@ public class ServerPlayerGameMode {
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}
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public void tick() {
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- this.gameTicks = MinecraftServer.currentTick; // CraftBukkit;
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+ this.gameTicks = (int)this.level.getLagCompensationTick(); // CraftBukkit; // Paper - lag compensation
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BlockState iblockdata;
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if (this.hasDelayedDestroy) {
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diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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index a4217f984148b12960c74ad2ef7cee761f305030..6071451339080bbdd98fb634791a56988984c8bc 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
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+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -3827,6 +3827,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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this.getEntityData().resendPossiblyDesyncedDataValues(java.util.List.of(DATA_LIVING_ENTITY_FLAGS), serverPlayer);
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}
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// Paper end - Properly cancel usable items
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+ // Paper start - lag compensate eating
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+ protected long eatStartTime;
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+ protected int totalEatTimeTicks;
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+ // Paper end - lag compensate eating
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private void updatingUsingItem() {
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if (this.isUsingItem()) {
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if (ItemStack.isSameItem(this.getItemInHand(this.getUsedItemHand()), this.useItem)) {
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@@ -3845,7 +3849,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
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this.triggerItemUseEffects(stack, 5);
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}
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- if (--this.useItemRemaining == 0 && !this.level().isClientSide && !stack.useOnRelease()) {
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+ // Paper start - lag compensate eating
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+ // we add 1 to the expected time to avoid lag compensating when we should not
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+ boolean shouldLagCompensate = this.useItem.getItem().isEdible() && this.eatStartTime != -1 && (System.nanoTime() - this.eatStartTime) > ((1 + this.totalEatTimeTicks) * 50 * (1000 * 1000));
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+ if ((--this.useItemRemaining == 0 || shouldLagCompensate) && !this.level().isClientSide && !stack.useOnRelease()) {
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+ this.useItemRemaining = 0;
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+ // Paper end - lag compensate eating
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this.completeUsingItem();
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}
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@@ -3893,7 +3902,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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if (!itemstack.isEmpty() && !this.isUsingItem() || forceUpdate) { // Paper - Prevent consuming the wrong itemstack
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this.useItem = itemstack;
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- this.useItemRemaining = itemstack.getUseDuration();
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+ // Paper start - lag compensate eating
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+ this.useItemRemaining = this.totalEatTimeTicks = itemstack.getUseDuration();
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+ this.eatStartTime = System.nanoTime();
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+ // Paper end - lag compensate eating
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if (!this.level().isClientSide) {
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this.setLivingEntityFlag(1, true);
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this.setLivingEntityFlag(2, hand == InteractionHand.OFF_HAND);
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@@ -3918,7 +3930,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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}
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} else if (!this.isUsingItem() && !this.useItem.isEmpty()) {
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this.useItem = ItemStack.EMPTY;
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- this.useItemRemaining = 0;
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+ // Paper start - lag compensate eating
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+ this.useItemRemaining = this.totalEatTimeTicks = 0;
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+ this.eatStartTime = -1L;
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+ // Paper end - lag compensate eating
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}
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}
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@@ -4053,7 +4068,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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}
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this.useItem = ItemStack.EMPTY;
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- this.useItemRemaining = 0;
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+ // Paper start - lag compensate eating
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+ this.useItemRemaining = this.totalEatTimeTicks = 0;
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+ this.eatStartTime = -1L;
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+ // Paper end - lag compensate eating
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}
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public boolean isBlocking() {
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