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https://github.com/PaperMC/Paper.git
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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.
94 lines
5.2 KiB
Diff
94 lines
5.2 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: Wed, 3 Jun 2020 11:37:13 -0700
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Subject: [PATCH] Optimise getType calls
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Remove the map lookup for converting from Block->Bukkit Material
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diff --git a/src/main/java/net/minecraft/world/level/block/state/BlockState.java b/src/main/java/net/minecraft/world/level/block/state/BlockState.java
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index 065d140ca4f987e14138a37f4c7d60879dd7b6e1..601135f3368272bf1ca3a43ec9c199e3ee838462 100644
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--- a/src/main/java/net/minecraft/world/level/block/state/BlockState.java
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+++ b/src/main/java/net/minecraft/world/level/block/state/BlockState.java
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@@ -10,6 +10,16 @@ import net.minecraft.world.level.block.state.properties.Property;
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public class BlockState extends BlockBehaviour.BlockStateBase {
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public static final Codec<BlockState> CODEC = codec(BuiltInRegistries.BLOCK.byNameCodec(), Block::defaultBlockState).stable();
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+ // Paper start - optimise getType calls
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+ org.bukkit.Material cachedMaterial;
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+
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+ public final org.bukkit.Material getBukkitMaterial() {
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+ if (this.cachedMaterial == null) {
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+ this.cachedMaterial = org.bukkit.craftbukkit.block.CraftBlockType.minecraftToBukkit(this.getBlock());
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+ }
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+ return this.cachedMaterial;
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+ }
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+ // Paper end - optimise getType calls
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public BlockState(Block block, Reference2ObjectArrayMap<Property<?>, Comparable<?>> propertyMap, MapCodec<BlockState> codec) {
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super(block, propertyMap, codec);
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
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index f2ce97e46cdbda0f8960eed9b601c797d8eaef48..85029f1acfdbb411d9ebdf95838d6db3898f4e58 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
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@@ -99,7 +99,7 @@ public class CraftChunkSnapshot implements ChunkSnapshot {
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public Material getBlockType(int x, int y, int z) {
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this.validateChunkCoordinates(x, y, z);
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- return CraftBlockType.minecraftToBukkit(this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBlock());
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+ return this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBukkitMaterial(); // Paper - optimise getType calls
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}
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@Override
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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index a586442422a2b2c06b785af0d261d3e19eb1d59b..aa644231425b9622437538b5c092d4064a40cced 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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@@ -220,7 +220,7 @@ public class CraftBlock implements Block {
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@Override
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public Material getType() {
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- return CraftBlockType.minecraftToBukkit(this.world.getBlockState(this.position).getBlock());
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+ return this.world.getBlockState(this.position).getBukkitMaterial(); // Paper - optimise getType calls
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}
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@Override
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
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index fabdec2d66cc6d676ed58fa570e2c318ab0927e2..1002123cd0c6f57cecc4e80f5f21cc6ff5886d37 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
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@@ -175,7 +175,7 @@ public class CraftBlockState implements BlockState {
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@Override
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public Material getType() {
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- return CraftBlockType.minecraftToBukkit(this.data.getBlock());
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+ return this.data.getBukkitMaterial(); // Paper - optimise getType calls
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}
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public void setFlag(int flag) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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index 67ff2241aa8869b41abb0a93467b8694618264e2..9953b6b36cbcbfd1756bac478b568ca5700fc898 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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@@ -61,7 +61,7 @@ public class CraftBlockData implements BlockData {
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@Override
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public Material getMaterial() {
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- return CraftBlockType.minecraftToBukkit(this.state.getBlock());
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+ return this.state.getBukkitMaterial(); // Paper - optimise getType calls
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}
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public net.minecraft.world.level.block.state.BlockState getState() {
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diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
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index c96aaa185d9d929cb19f427be82053f0cfa13bad..0fb580530d0b6d4d63ea4b85fec9240eb5c74df4 100644
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--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
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+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
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@@ -96,7 +96,7 @@ public final class CraftChunkData implements ChunkGenerator.ChunkData {
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@Override
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public Material getType(int x, int y, int z) {
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- return CraftBlockType.minecraftToBukkit(this.getTypeId(x, y, z).getBlock());
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+ return this.getTypeId(x, y, z).getBukkitMaterial(); // Paper - optimise getType calls
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}
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@Override
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