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128 lines
7.5 KiB
Diff
128 lines
7.5 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/net/minecraft/server/MinecraftServer.java b/net/minecraft/server/MinecraftServer.java
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index 5649482a8b85056bc009b868e19ca11f21d59fbf..f4fba4e2d12c7ab4b4eb9858cd738a9678a2d203 100644
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--- a/net/minecraft/server/MinecraftServer.java
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+++ b/net/minecraft/server/MinecraftServer.java
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@@ -301,6 +301,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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public final io.papermc.paper.configuration.PaperConfigurations paperConfigurations; // Paper - add paper configuration files
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public boolean isIteratingOverLevels = false; // Paper - Throw exception on world create while being ticked
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private final Set<String> pluginsBlockingSleep = new java.util.HashSet<>(); // Paper - API to allow/disallow tick sleeping
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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> threadFunction) {
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ca.spottedleaf.dataconverter.minecraft.datatypes.MCTypeRegistry.init(); // Paper - rewrite data converter system
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@@ -1561,6 +1562,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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for (ServerLevel serverLevel : this.getAllLevels()) {
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serverLevel.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - BlockPhysicsEvent
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serverLevel.hasEntityMoveEvent = io.papermc.paper.event.entity.EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - Add EntityMoveEvent
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+ serverLevel.updateLagCompensationTick(); // Paper - lag compensation
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profilerFiller.push(() -> serverLevel + " " + serverLevel.dimension().location());
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/* Drop global time updates
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if (this.tickCount % 20 == 0) {
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diff --git a/net/minecraft/server/level/ServerLevel.java b/net/minecraft/server/level/ServerLevel.java
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index 4d20bda4cba578c47216d450c99389b744a59008..47b7d487467225505e3f20cea92e114331d660fd 100644
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--- a/net/minecraft/server/level/ServerLevel.java
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+++ b/net/minecraft/server/level/ServerLevel.java
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@@ -2362,4 +2362,16 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
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return this.server.getPlayerList().getPlayer(uuid);
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}
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// Paper end - check global player list where appropriate
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+
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+ // Paper start - lag compensation
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+ private long lagCompensationTick = 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() - 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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}
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diff --git a/net/minecraft/server/level/ServerPlayerGameMode.java b/net/minecraft/server/level/ServerPlayerGameMode.java
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index fd7ad2b1bffe3880def0f0c9a7ed8de5088ecd71..e753849002b48d4a498dc93349e331bc26d39aff 100644
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--- a/net/minecraft/server/level/ServerPlayerGameMode.java
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+++ b/net/minecraft/server/level/ServerPlayerGameMode.java
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@@ -111,7 +111,7 @@ public class ServerPlayerGameMode {
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}
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public void tick() {
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- this.gameTicks = net.minecraft.server.MinecraftServer.currentTick; // CraftBukkit
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+ this.gameTicks = (int) this.level.getLagCompensationTick(); // Paper - lag compensation
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if (this.hasDelayedDestroy) {
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BlockState blockState = this.level.getBlockStateIfLoaded(this.delayedDestroyPos); // Paper - Don't allow digging into unloaded chunks
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if (blockState == null || blockState.isAir()) { // Paper - Don't allow digging into unloaded chunks
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diff --git a/net/minecraft/world/entity/LivingEntity.java b/net/minecraft/world/entity/LivingEntity.java
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index 635e6e49483194c43b0ab47b5e1bacfe84613c3a..195e1151f7b2a32d6c4eb67edd1952e38f58b266 100644
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--- a/net/minecraft/world/entity/LivingEntity.java
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+++ b/net/minecraft/world/entity/LivingEntity.java
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@@ -3828,6 +3828,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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this.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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@@ -3841,7 +3845,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
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protected void updateUsingItem(ItemStack usingItem) {
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usingItem.onUseTick(this.level(), this, this.getUseItemRemainingTicks());
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- if (--this.useItemRemaining == 0 && !this.level().isClientSide && !usingItem.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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+ final boolean shouldLagCompensate = this.useItem.has(DataComponents.FOOD) && this.eatStartTime != -1 && (System.nanoTime() - this.eatStartTime) > ((1L + this.totalEatTimeTicks) * 50L * (1000L * 1000L));
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+ if ((--this.useItemRemaining == 0 || shouldLagCompensate) && !this.level().isClientSide && !usingItem.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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}
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@@ -3875,7 +3884,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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ItemStack itemInHand = this.getItemInHand(hand);
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if (!itemInHand.isEmpty() && !this.isUsingItem() || forceUpdate) { // Paper - Prevent consuming the wrong itemstack
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this.useItem = itemInHand;
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- this.useItemRemaining = itemInHand.getUseDuration(this);
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+ // Paper start - lag compensate eating
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+ this.useItemRemaining = this.totalEatTimeTicks = itemInHand.getUseDuration(this);
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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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@@ -3899,7 +3911,10 @@ 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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}
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@@ -4023,7 +4038,10 @@ 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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