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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.
23 Zeilen
1.1 KiB
Diff
23 Zeilen
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: William Blake Galbreath <Blake.Galbreath@GMail.com>
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Date: Wed, 8 Jul 2020 11:24:30 -0500
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Subject: [PATCH] Fix arrows never despawning MC-125757
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This forces the despawn counter to start ticking regardless of
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state after the arrow has been alive for 200 ticks (10 seconds)
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instead of getting stuck in a never despawn state (bubble columns,
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etc).
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diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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index 6c79997ba46e641de5aa12ff8a3d790d04a5a475..746bb8a36bd6c6ef953289576af499caad588d79 100644
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--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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@@ -238,6 +238,7 @@ public abstract class AbstractArrow extends Projectile {
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++this.inGroundTime;
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} else {
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+ if (tickCount > 200) this.tickDespawn(); // Paper - tick despawnCounter regardless after 10 seconds
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this.inGroundTime = 0;
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Vec3 vec3d2 = this.position();
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