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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.
20 Zeilen
1.5 KiB
Diff
20 Zeilen
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Esophose <esophose@gmail.com>
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Date: Sat, 3 Oct 2020 18:57:47 -0600
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Subject: [PATCH] Fix Player spawnParticle x/y/z precision loss
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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index 854533854dfba24b59a15265ac759331e3ddfc74..73fde8be0098238582fb3661ae67d4139be417dc 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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@@ -2707,7 +2707,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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@Override
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public <T> void spawnParticle(Particle particle, double x, double y, double z, int count, double offsetX, double offsetY, double offsetZ, double extra, T data, boolean force) {
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- ClientboundLevelParticlesPacket packetplayoutworldparticles = new ClientboundLevelParticlesPacket(CraftParticle.createParticleParam(particle, data), force, (float) x, (float) y, (float) z, (float) offsetX, (float) offsetY, (float) offsetZ, (float) extra, count);
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+ ClientboundLevelParticlesPacket packetplayoutworldparticles = new ClientboundLevelParticlesPacket(CraftParticle.createParticleParam(particle, data), force, x, y, z, (float) offsetX, (float) offsetY, (float) offsetZ, (float) extra, count); // Paper - fix x/y/z precision loss
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this.getHandle().connection.send(packetplayoutworldparticles);
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}
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