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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.
44 Zeilen
2.4 KiB
Diff
44 Zeilen
2.4 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: Wed, 15 Apr 2020 17:56:07 -0700
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Subject: [PATCH] Don't run entity collision code if not needed
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Will not run if:
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Max entity cramming is disabled and the max collisions per entity is less than or equal to 0.
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Entity#isPushable() returns false, meaning all entities will not be able to collide with this
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entity anyways.
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The entity's current team collision rule causes them to NEVER collide.
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Co-authored-by: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
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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 4c32b26e29ca3db0a2f62052e14bcc3e4c1cdea5..cf18f17f181bc94a2b5f4ac6926c2388ec3178c8 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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@@ -3544,10 +3544,24 @@ public abstract class LivingEntity extends Entity implements Attackable {
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if (this.level().isClientSide()) {
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this.level().getEntities(EntityTypeTest.forClass(net.minecraft.world.entity.player.Player.class), this.getBoundingBox(), EntitySelector.pushableBy(this)).forEach(this::doPush);
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} else {
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+ // Paper start - don't run getEntities if we're not going to use its result
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+ if (!this.isPushable()) {
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+ return;
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+ }
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+ net.minecraft.world.scores.Team team = this.getTeam();
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+ if (team != null && team.getCollisionRule() == net.minecraft.world.scores.Team.CollisionRule.NEVER) {
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+ return;
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+ }
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+
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+ int i = this.level().getGameRules().getInt(GameRules.RULE_MAX_ENTITY_CRAMMING);
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+ if (i <= 0 && this.level().paperConfig().collisions.maxEntityCollisions <= 0) {
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+ return;
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+ }
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+ // Paper end - don't run getEntities if we're not going to use its result
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List<Entity> list = this.level().getEntities((Entity) this, this.getBoundingBox(), EntitySelector.pushableBy(this));
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if (!list.isEmpty()) {
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- int i = this.level().getGameRules().getInt(GameRules.RULE_MAX_ENTITY_CRAMMING);
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+ // Paper - don't run getEntities if we're not going to use its result; moved up
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if (i > 0 && list.size() > i - 1 && this.random.nextInt(4) == 0) {
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int j = 0;
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