From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Spottedleaf 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 2f263ef5120982b3167ab008a0e22b8cbc9b9fdd..f03f6922d15541c5491e5b37a3efa7ef0abef211 100644 --- a/src/main/java/net/minecraft/server/MinecraftServer.java +++ b/src/main/java/net/minecraft/server/MinecraftServer.java @@ -311,6 +311,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop S spin(Function serverFactory) { AtomicReference atomicreference = new AtomicReference(); @@ -1693,6 +1694,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop 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(() -> { return worldserver + " " + worldserver.dimension().location(); diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java index c9405cbea1202e5603dde42637cf2a78592b92e1..8a5abc320137d045acba0c87cef9f2912d78b6fb 100644 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java @@ -565,6 +565,17 @@ 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 resourcekey, LevelStem worlddimension, ChunkProgressListener worldloadlistener, boolean flag, long i, List 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 ef3048a4748113538a0ee0af5b526b2cd51d5c29..a7b217ddbcbf92513bd38101fdfca2075505e267 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java @@ -124,7 +124,7 @@ 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 28b4e9ebc35058c3e094c1f8bd87130e288cea33..e9bb7feb591032904516d1b9374f486d8a7d066c 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -3849,6 +3849,10 @@ public abstract class LivingEntity extends Entity implements Attackable { this.getEntityData().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)) { @@ -3867,7 +3871,12 @@ 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().isEdible() && 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(); } @@ -3915,7 +3924,10 @@ 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); @@ -3940,7 +3952,10 @@ 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 } } @@ -4075,7 +4090,10 @@ 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() {