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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.
73 lines
4.3 KiB
Diff
73 lines
4.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Mon, 4 Jan 2021 22:40:34 -0800
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Subject: [PATCH] Add worldborder events
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diff --git a/src/main/java/net/minecraft/world/level/border/WorldBorder.java b/src/main/java/net/minecraft/world/level/border/WorldBorder.java
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index 3442e33a1146318228c4727a2a5afde685f69bf7..04e62c54f224f7949fde9ceded208e700db55aa1 100644
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--- a/src/main/java/net/minecraft/world/level/border/WorldBorder.java
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+++ b/src/main/java/net/minecraft/world/level/border/WorldBorder.java
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@@ -140,6 +140,14 @@ public class WorldBorder {
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}
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public void setCenter(double x, double z) {
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+ // Paper start - Add worldborder events
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+ if (this.world != null) {
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+ io.papermc.paper.event.world.border.WorldBorderCenterChangeEvent event = new io.papermc.paper.event.world.border.WorldBorderCenterChangeEvent(world.getWorld(), world.getWorld().getWorldBorder(), new org.bukkit.Location(world.getWorld(), this.getCenterX(), 0, this.getCenterZ()), new org.bukkit.Location(world.getWorld(), x, 0, z));
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+ if (!event.callEvent()) return;
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+ x = event.getNewCenter().getX();
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+ z = event.getNewCenter().getZ();
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+ }
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+ // Paper end - Add worldborder events
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this.centerX = x;
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this.centerZ = z;
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this.extent.onCenterChange();
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@@ -166,6 +174,17 @@ public class WorldBorder {
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}
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public void setSize(double size) {
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+ // Paper start - Add worldborder events
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+ if (this.world != null) {
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+ io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent event = new io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent(world.getWorld(), world.getWorld().getWorldBorder(), io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent.Type.INSTANT_MOVE, getSize(), size, 0);
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+ if (!event.callEvent()) return;
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+ if (event.getType() == io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent.Type.STARTED_MOVE && event.getDuration() > 0) { // If changed to a timed transition
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+ lerpSizeBetween(event.getOldSize(), event.getNewSize(), event.getDuration());
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+ return;
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+ }
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+ size = event.getNewSize();
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+ }
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+ // Paper end - Add worldborder events
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this.extent = new WorldBorder.StaticBorderExtent(size);
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Iterator iterator = this.getListeners().iterator();
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@@ -178,6 +197,20 @@ public class WorldBorder {
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}
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public void lerpSizeBetween(double fromSize, double toSize, long time) {
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+ // Paper start - Add worldborder events
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+ if (this.world != null) {
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+ io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent.Type type;
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+ if (fromSize == toSize) { // new size = old size
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+ type = io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent.Type.INSTANT_MOVE; // Use INSTANT_MOVE because below it creates a Static border if they are equal.
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+ } else {
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+ type = io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent.Type.STARTED_MOVE;
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+ }
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+ io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent event = new io.papermc.paper.event.world.border.WorldBorderBoundsChangeEvent(world.getWorld(), world.getWorld().getWorldBorder(), type, fromSize, toSize, time);
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+ if (!event.callEvent()) return;
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+ toSize = event.getNewSize();
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+ time = event.getDuration();
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+ }
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+ // Paper end - Add worldborder events
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this.extent = (WorldBorder.BorderExtent) (fromSize == toSize ? new WorldBorder.StaticBorderExtent(toSize) : new WorldBorder.MovingBorderExtent(fromSize, toSize, time));
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Iterator iterator = this.getListeners().iterator();
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@@ -489,6 +522,7 @@ public class WorldBorder {
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@Override
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public WorldBorder.BorderExtent update() {
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+ if (world != null && this.getLerpRemainingTime() <= 0L) new io.papermc.paper.event.world.border.WorldBorderBoundsChangeFinishEvent(world.getWorld(), world.getWorld().getWorldBorder(), this.from, this.to, this.lerpDuration).callEvent(); // Paper - Add worldborder events
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return (WorldBorder.BorderExtent) (this.getLerpRemainingTime() <= 0L ? WorldBorder.this.new StaticBorderExtent(this.to) : this);
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}
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