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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.
53 lines
3.3 KiB
Diff
53 lines
3.3 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: Mon, 8 Jul 2019 00:13:36 -0700
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Subject: [PATCH] Use getChunkIfLoadedImmediately in places
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This prevents us from hitting chunk loads for chunks at or less-than
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ticket level 33 (yes getChunkIfLoaded will actually perform a chunk
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load in that case).
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index 055650b315d53b56798ded7af2054c3e8e3ee319..c72687fb23e8d01639cce7d79e3f97805d51e01f 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -231,7 +231,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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public boolean hasEntityMoveEvent; // Paper - Add EntityMoveEvent
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public LevelChunk getChunkIfLoaded(int x, int z) {
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- return this.chunkSource.getChunk(x, z, false);
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+ return this.chunkSource.getChunkAtIfLoadedImmediately(x, z); // Paper - Use getChunkIfLoadedImmediately
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}
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@Override
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diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
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index 144d243e0d6ba3ae3f0b0bf457fa516e2b4f416f..20a14b4163807b806bf2ce5a88d3c35098bed929 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
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+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -180,6 +180,13 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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return (CraftServer) Bukkit.getServer();
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}
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+ // Paper start - Use getChunkIfLoadedImmediately
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+ @Override
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+ public boolean hasChunk(int chunkX, int chunkZ) {
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+ return this.getChunkIfLoaded(chunkX, chunkZ) != null;
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+ }
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+ // Paper end - Use getChunkIfLoadedImmediately
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+
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public abstract ResourceKey<LevelStem> getTypeKey();
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protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, RegistryAccess iregistrycustom, Holder<DimensionType> holder, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function<org.spigotmc.SpigotWorldConfig, io.papermc.paper.configuration.WorldConfiguration> paperWorldConfigCreator) { // Paper - create paper world config
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diff --git a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
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index 13b34e89bd3e55df1bb1d4d0cf013bafae43f502..df6c97be1b278c97a20390be5d3e60f429383702 100644
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--- a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
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+++ b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
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@@ -56,7 +56,7 @@ public class GameEventDispatcher {
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for (int l1 = j; l1 <= i1; ++l1) {
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for (int i2 = l; i2 <= k1; ++i2) {
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- LevelChunk chunk = this.level.getChunkSource().getChunkNow(l1, i2);
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+ LevelChunk chunk = (LevelChunk) this.level.getChunkIfLoadedImmediately(l1, i2); // Paper - Use getChunkIfLoadedImmediately
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if (chunk != null) {
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for (int j2 = k; j2 <= j1; ++j2) {
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