Paper/patches/server/0518-Optimise-getType-calls.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Wed, 3 Jun 2020 11:37:13 -0700
Subject: [PATCH] Optimise getType calls

Remove the map lookup for converting from Block->Bukkit Material

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
index 76133c77e8ebce7c9e5402e3e7cd50b30aa1c2e0..348a91a760bd728f8e732e1a35c86ab75d8fc0f1 100644
--- a/src/main/java/net/minecraft/world/level/block/state/BlockState.java
+++ b/src/main/java/net/minecraft/world/level/block/state/BlockState.java
@@ -10,6 +10,17 @@ import net.minecraft.world.level.block.state.properties.Property;
 public class BlockState extends BlockBehaviour.BlockStateBase {
     public static final Codec<BlockState> CODEC = codec(Registry.BLOCK.byNameCodec(), Block::defaultBlockState).stable();
 
+    // Paper start - optimise getType calls
+    org.bukkit.Material cachedMaterial;
+
+    public final org.bukkit.Material getBukkitMaterial() {
+        if (this.cachedMaterial == null) {
+            this.cachedMaterial = org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(this.getBlock());
+        }
+
+        return this.cachedMaterial;
+    }
+    // Paper end - optimise getType calls
     public BlockState(Block block, ImmutableMap<Property<?>, Comparable<?>> propertyMap, MapCodec<BlockState> codec) {
         super(block, propertyMap, codec);
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
index dc1b73816e0e02d3a35a64e02904a034fbaeb8c9..83f8c3ab5ed1f491902e86e4cf605cfa6b10ae52 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
@@ -80,7 +80,7 @@ public class CraftChunkSnapshot implements ChunkSnapshot {
     public Material getBlockType(int x, int y, int z) {
         this.validateChunkCoordinates(x, y, z);
 
-        return CraftMagicNumbers.getMaterial(this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBlock());
+        return this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBukkitMaterial(); // Paper - optimise getType calls
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
index ce97c1cafc520db5670004e00aee6b08045e9e00..e69b1831cbfdff3f2b1e4be4d5de313bfe724795 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
@@ -215,7 +215,7 @@ public class CraftBlock implements Block {
 
     @Override
     public Material getType() {
-        return CraftMagicNumbers.getMaterial(this.world.getBlockState(position).getBlock());
+        return this.world.getBlockState(this.position).getBukkitMaterial(); // Paper - optimise getType calls
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
index 0a755f38fae9dc84440f43113920c5b4c6d8218b..7b9e943b391c061782fccd2b8d705ceec8db50fe 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
@@ -166,7 +166,7 @@ public class CraftBlockState implements BlockState {
 
     @Override
     public Material getType() {
-        return CraftMagicNumbers.getMaterial(this.data.getBlock());
+        return this.data.getBukkitMaterial(); // Paper - optimise getType calls
     }
 
     public void setFlag(int flag) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
index 6dc8f9f269db6971b8b46819e017357899ccd118..7f49c7c7048b5778f20ddce1d844d4b389e6597f 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
@@ -45,7 +45,7 @@ public class CraftBlockData implements BlockData {
 
     @Override
     public Material getMaterial() {
-        return CraftMagicNumbers.getMaterial(this.state.getBlock());
+        return this.state.getBukkitMaterial(); // Paper - optimise getType calls
     }
 
     public BlockState getState() {
diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
index ee88ff2ee86bbd3ccf3e4a0b2310f020f137ef4f..5e15feb408b8a05ec5ee393a604c8d39a91ff106 100644
--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
@@ -96,7 +96,7 @@ public final class CraftChunkData implements ChunkGenerator.ChunkData {
 
     @Override
     public Material getType(int x, int y, int z) {
-        return CraftMagicNumbers.getMaterial(this.getTypeId(x, y, z).getBlock());
+        return this.getTypeId(x, y, z).getBukkitMaterial(); // Paper - optimise getType calls
     }
 
     @Override