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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
68 lines
4.6 KiB
Diff
68 lines
4.6 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: Mon, 2 Aug 2021 10:10:40 +0200
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Subject: [PATCH] Check distance in entity interactions
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diff --git a/src/main/java/net/minecraft/Util.java b/src/main/java/net/minecraft/Util.java
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index 42d7ecfab6f72517904451d9df3f0404b176fdb2..0e38a641d8e537750166b56c57aca4a90d418af1 100644
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--- a/src/main/java/net/minecraft/Util.java
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+++ b/src/main/java/net/minecraft/Util.java
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@@ -125,6 +125,7 @@ public class Util {
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.filter(fileSystemProvider -> fileSystemProvider.getScheme().equalsIgnoreCase("jar"))
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.findFirst()
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.orElseThrow(() -> new IllegalStateException("No jar file system provider found"));
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+ public static final double COLLISION_EPSILON = 1.0E-7; // Paper - Check distance in entity interactions
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private static Consumer<String> thePauser = message -> {
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};
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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 340c4452c09a98bc0220e6fe68dc65afc946986b..05dae689ada8d96009e81aabf95a626bae90ecd3 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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@@ -1437,7 +1437,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
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if (!source.is(DamageTypeTags.IS_PROJECTILE)) {
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Entity entity = source.getDirectEntity();
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- if (entity instanceof LivingEntity) {
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+ if (entity instanceof LivingEntity && entity.distanceToSqr(this) <= (200.0D * 200.0D)) { // Paper - Check distance in entity interactions
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LivingEntity entityliving = (LivingEntity) entity;
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this.blockUsingShield(entityliving);
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@@ -1557,6 +1557,14 @@ public abstract class LivingEntity extends Entity implements Attackable {
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d0 = source.getSourcePosition().x() - this.getX();
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d1 = source.getSourcePosition().z() - this.getZ();
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}
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+ // Paper start - Check distance in entity interactions; see for loop in knockback method
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+ if (Math.abs(d0) > 200) {
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+ d0 = Math.random() - Math.random();
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+ }
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+ if (Math.abs(d1) > 200) {
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+ d1 = Math.random() - Math.random();
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+ }
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+ // Paper end - Check distance in entity interactions
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this.knockback(0.4000000059604645D, d0, d1, entity1, entity1 == null ? io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.DAMAGE : io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events
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if (!flag) {
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@@ -2351,7 +2359,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
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this.hurtCurrentlyUsedShield((float) -event.getDamage(DamageModifier.BLOCKING));
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Entity entity = damagesource.getDirectEntity();
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- if (!damagesource.is(DamageTypeTags.IS_PROJECTILE) && entity instanceof LivingEntity) { // Paper - Fix shield disable inconsistency
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+ if (!damagesource.is(DamageTypeTags.IS_PROJECTILE) && entity instanceof LivingEntity && entity.distanceToSqr(this) <= (200.0D * 200.0D)) { // Paper - Fix shield disable inconsistency & Check distance in entity interactions
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this.blockUsingShield((LivingEntity) entity);
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}
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}
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diff --git a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
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index 907f751c859855484151fb5d607acee2f2a35076..f1955afc8e367f80ead85bd5ad3b8d66c255565a 100644
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--- a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
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+++ b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
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@@ -718,7 +718,7 @@ public class Boat extends VehicleEntity implements Leashable, VariantHolder<Boat
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double d2 = (double) (this.getWaterLevelAbove() - this.getBbHeight()) + 0.101D;
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if (this.level().noCollision(this, this.getBoundingBox().move(0.0D, d2 - this.getY(), 0.0D))) {
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- this.setPos(this.getX(), d2, this.getZ());
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+ this.move(MoverType.SELF, new Vec3(0.0D, d2 - this.getY(), 0.0D)); // Paper - Check distance in entity interactions // TODO Still needed?
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this.setDeltaMovement(this.getDeltaMovement().multiply(1.0D, 0.0D, 1.0D));
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this.lastYd = 0.0D;
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}
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