PaperMC/patches/server/0357-Potential-bed-API.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
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.
2024-09-19 16:36:07 +02:00

44 lines
2.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JRoy <joshroy126@gmail.com>
Date: Sun, 10 May 2020 23:06:30 -0400
Subject: [PATCH] Potential bed API
Adds a new method to fetch the location of a player's bed without generating any sync loads.
getPotentialBedLocation - Gets the last known location of a player's bed. This does not preform any check if the bed is still valid and does not load any chunks.
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index ba63c58d40cb3b8655fdb8177c423c67ac7cc3ef..c17dd4205983855615289cf0a5619056d237f325 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -12,6 +12,7 @@ import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.chat.Component;
import net.minecraft.network.protocol.game.ClientboundOpenScreenPacket;
import net.minecraft.network.protocol.game.ServerboundContainerClosePacket;
+import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.MenuProvider;
import net.minecraft.world.entity.Entity;
@@ -129,6 +130,22 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
return this.getHandle().sleepCounter;
}
+ // Paper start - Potential bed api
+ @Override
+ public Location getPotentialBedLocation() {
+ ServerPlayer handle = (ServerPlayer) getHandle();
+ BlockPos bed = handle.getRespawnPosition();
+ if (bed == null) {
+ return null;
+ }
+
+ ServerLevel worldServer = handle.server.getLevel(handle.getRespawnDimension());
+ if (worldServer == null) {
+ return null;
+ }
+ return new Location(worldServer.getWorld(), bed.getX(), bed.getY(), bed.getZ());
+ }
+ // Paper end
@Override
public boolean sleep(Location location, boolean force) {
Preconditions.checkArgument(location != null, "Location cannot be null");