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Paper/Spigot-Server-Patches/0076-Optimized-Light-Level-Comparisons.patch
Zach Brown 974b0afca9
Remove last bit of chunk exists region file fix 
CraftBukkit removed their implementation that caused this issue,
switching to Mojang's implementation which doesn't appear to share it. I
already removed the important bit in the last upstream merge, this is
just unused and unnecessary now. So we remove it.
2017-04-29 05:27:31 -05:00

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From ca1b25eea56895788212adb3ecb23dedc8ae132c Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 18 Mar 2016 21:22:56 -0400
Subject: [PATCH] Optimized Light Level Comparisons
Use an optimized method to test if a block position meets a desired light level.
This method benefits from returning as soon as the desired light level matches.
diff --git a/src/main/java/net/minecraft/server/BlockCrops.java b/src/main/java/net/minecraft/server/BlockCrops.java
index e9c5d1465..9015affc5 100644
--- a/src/main/java/net/minecraft/server/BlockCrops.java
+++ b/src/main/java/net/minecraft/server/BlockCrops.java
@@ -48,7 +48,7 @@ public class BlockCrops extends BlockPlant implements IBlockFragilePlantElement
public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
super.b(world, blockposition, iblockdata, random);
- if (world.getLightLevel(blockposition.up()) >= 9) {
+ if (world.isLightLevel(blockposition.up(), 9)) { // Paper
int i = this.z(iblockdata);
if (i < this.g()) {
diff --git a/src/main/java/net/minecraft/server/BlockGrass.java b/src/main/java/net/minecraft/server/BlockGrass.java
index fb1bf80b8..8b43e6070 100644
--- a/src/main/java/net/minecraft/server/BlockGrass.java
+++ b/src/main/java/net/minecraft/server/BlockGrass.java
@@ -29,7 +29,8 @@ public class BlockGrass extends Block implements IBlockFragilePlantElement {
public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
if (!world.isClientSide) {
- if (world.getLightLevel(blockposition.up()) < 4 && world.getType(blockposition.up()).c() > 2) {
+ int lightLevel = -1; // Paper
+ if (world.getType(blockposition.up()).c() > 2 && (lightLevel = world.getLightLevel(blockposition.up())) < 4) { // Paper - move light check to end to avoid unneeded light lookups
// CraftBukkit start
// world.setTypeUpdate(blockposition, Blocks.DIRT.getBlockData());
org.bukkit.World bworld = world.getWorld();
@@ -44,18 +45,25 @@ public class BlockGrass extends Block implements IBlockFragilePlantElement {
}
// CraftBukkit end
} else {
- if (world.getLightLevel(blockposition.up()) >= 9) {
+ // Paper start
+ // If light was calculated above, reuse it, else grab it
+ if (lightLevel == -1) {
+ lightLevel = world.getLightLevel(blockposition.up());
+ }
+ if (lightLevel >= 9) {
+ // Paper end
for (int i = 0; i < 4; ++i) {
BlockPosition blockposition1 = blockposition.a(random.nextInt(3) - 1, random.nextInt(5) - 3, random.nextInt(3) - 1);
- if (blockposition1.getY() >= 0 && blockposition1.getY() < 256 && !world.isLoaded(blockposition1)) {
+ IBlockData iblockdata2 = world.getTypeIfLoaded(blockposition1); // Paper - moved up
+ if (iblockdata2 == null) { // Paper
return;
}
IBlockData iblockdata1 = world.getType(blockposition1.up());
- IBlockData iblockdata2 = world.getType(blockposition1);
+ //IBlockData iblockdata2 = world.getTypeIfLoaded(blockposition1); // Paper - moved up
- if (iblockdata2.getBlock() == Blocks.DIRT && iblockdata2.get(BlockDirt.VARIANT) == BlockDirt.EnumDirtVariant.DIRT && world.getLightLevel(blockposition1.up()) >= 4 && iblockdata1.c() <= 2) {
+ if (iblockdata2.getBlock() == Blocks.DIRT && iblockdata2.get(BlockDirt.VARIANT) == BlockDirt.EnumDirtVariant.DIRT && iblockdata1.c() <= 2 && world.isLightLevel(blockposition1.up(), 4)) { // Paper - move last check before isLightLevel to avoid unneeded light checks
// CraftBukkit start
// world.setTypeUpdate(blockposition1, Blocks.GRASS.getBlockData());
org.bukkit.World bworld = world.getWorld();
diff --git a/src/main/java/net/minecraft/server/BlockSapling.java b/src/main/java/net/minecraft/server/BlockSapling.java
index f463b7113..89458cd77 100644
--- a/src/main/java/net/minecraft/server/BlockSapling.java
+++ b/src/main/java/net/minecraft/server/BlockSapling.java
@@ -34,7 +34,7 @@ public class BlockSapling extends BlockPlant implements IBlockFragilePlantElemen
public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
if (!world.isClientSide) {
super.b(world, blockposition, iblockdata, random);
- if (world.getLightLevel(blockposition.up()) >= 9 && random.nextInt(Math.max(2, (int) (((100.0F / world.spigotConfig.saplingModifier) * 7) + 0.5F))) == 0) { // Spigot
+ if (world.isLightLevel(blockposition.up(), 9) && random.nextInt(Math.max(2, (int) (((100.0F / world.spigotConfig.saplingModifier) * 7) + 0.5F))) == 0) { // Spigot // Paper
// CraftBukkit start
world.captureTreeGeneration = true;
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/BlockStem.java b/src/main/java/net/minecraft/server/BlockStem.java
index c74b6284f..bb96e164e 100644
--- a/src/main/java/net/minecraft/server/BlockStem.java
+++ b/src/main/java/net/minecraft/server/BlockStem.java
@@ -48,7 +48,7 @@ public class BlockStem extends BlockPlant implements IBlockFragilePlantElement {
public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
super.b(world, blockposition, iblockdata, random);
- if (world.getLightLevel(blockposition.up()) >= 9) {
+ if (world.isLightLevel(blockposition.up(), 9)) { // Paper
float f = BlockCrops.a((Block) this, world, blockposition);
if (random.nextInt((int) ((100.0F / (this == Blocks.PUMPKIN_STEM ? world.spigotConfig.pumpkinModifier : world.spigotConfig.melonModifier)) * (25.0F / f)) + 1) == 0) { // Spigot
diff --git a/src/main/java/net/minecraft/server/EntityMonster.java b/src/main/java/net/minecraft/server/EntityMonster.java
index 3ee52139c..59d8bb6e7 100644
--- a/src/main/java/net/minecraft/server/EntityMonster.java
+++ b/src/main/java/net/minecraft/server/EntityMonster.java
@@ -118,17 +118,17 @@ public abstract class EntityMonster extends EntityCreature implements IMonster {
if (this.world.getBrightness(EnumSkyBlock.SKY, blockposition) > this.random.nextInt(32)) {
return false;
} else {
- int i = this.world.getLightLevel(blockposition);
-
+ //int i = this.world.getLightLevel(blockposition); // Paper
+ boolean passes; // Paper
if (this.world.V()) {
int j = this.world.af();
this.world.c(10);
- i = this.world.getLightLevel(blockposition);
+ passes = !world.isLightLevel(blockposition, this.random.nextInt(9)); // Paper
this.world.c(j);
- }
+ } else { passes = !world.isLightLevel(blockposition, this.random.nextInt(9)); } // Paper
- return i <= this.random.nextInt(8);
+ return passes; // Paper
}
}
diff --git a/src/main/java/net/minecraft/server/EntityZombie.java b/src/main/java/net/minecraft/server/EntityZombie.java
index 897882c97..970fabf71 100644
--- a/src/main/java/net/minecraft/server/EntityZombie.java
+++ b/src/main/java/net/minecraft/server/EntityZombie.java
@@ -178,7 +178,7 @@ public class EntityZombie extends EntityMonster {
int j1 = j + MathHelper.nextInt(this.random, 7, 40) * MathHelper.nextInt(this.random, -1, 1);
int k1 = k + MathHelper.nextInt(this.random, 7, 40) * MathHelper.nextInt(this.random, -1, 1);
- if (this.world.getType(new BlockPosition(i1, j1 - 1, k1)).r() && this.world.getLightLevel(new BlockPosition(i1, j1, k1)) < 10) {
+ if (this.world.getType(new BlockPosition(i1, j1 - 1, k1)).r() && !this.world.isLightLevel(new BlockPosition(i1, j1, k1), 10)) { // Paper
entityzombie.setPosition((double) i1, (double) j1, (double) k1);
if (!this.world.isPlayerNearby((double) i1, (double) j1, (double) k1, 7.0D) && this.world.a(entityzombie.getBoundingBox(), (Entity) entityzombie) && this.world.getCubes(entityzombie, entityzombie.getBoundingBox()).isEmpty() && !this.world.containsLiquid(entityzombie.getBoundingBox())) {
this.world.addEntity(entityzombie, CreatureSpawnEvent.SpawnReason.REINFORCEMENTS); // CraftBukkit
--
2.12.2.windows.2
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