Paper/patches/server/0039-Optimize-explosions.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Wed, 2 Mar 2016 11:59:48 -0600
Subject: [PATCH] Optimize explosions
The process of determining an entity's exposure from explosions can be
expensive when there are hundreds or more entities in range.
This patch adds a per-tick cache that is used for storing and retrieving
an entity's exposure during an explosion.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 2aeeffe6d011a1ecc848b80f0236c8a3f871a01c..d5ad3368a397e9fc02506187ccb1c386afd9ce2b 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -1412,6 +1412,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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this.profiler.pop();
this.profiler.pop();
+ worldserver.explosionDensityCache.clear(); // Paper - Optimize explosions
}
this.profiler.popPush("connection");
diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
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index e360022498b91a8371b33d84bf6fff96c503999d..925d37ca684e7e6a3ad88e6e040f3599225f0b1d 100644
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--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
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@@ -221,7 +221,7 @@ public class Explosion {
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d8 /= d11;
d9 /= d11;
d10 /= d11;
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- double d12 = (double) Explosion.getSeenPercent(vec3d, entity);
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+ double d12 = this.getBlockDensity(vec3d, entity); // Paper - Optimize explosions
double d13 = (1.0D - d7) * d12;
// CraftBukkit start
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#9188) * Updated Upstream (Bukkit/CraftBukkit/Spigot) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 2fcba9b2 SPIGOT-7347: Add missing documentation and details to ShapedRecipe c278419d PR-854: Move getHighestBlockYAt methods from World to RegionAccessor 201399fb PR-853: Add API for directly setting Display transformation matrices ecfa559a PR-849: Add InventoryView#setTitle 653d7edb SPIGOT-519: Add TNTPrimeEvent 22fccc09 PR-846: Add method to get chunk load level a070a52c PR-844: Add methods to convert Vector to and from JOML vectors cc7111fe PR-276: Add accessors to Wither's invulnerability ticks 777d24e9 SPIGOT-7209: Accessors and events for player's exp cooldown ccb2d01b SPIGOT-6308: Deprecate the location name property of map items cd04a31b PR-780: Add PlayerSpawnChangeEvent 7d1f5b64 SPIGOT-6780: Improve documentation for World#spawnFallingBlock 5696668a SPIGOT-6885: Add test and easier to debug code for reference in yaml configuration comments 2e13cff7 PR-589: Expand the FishHook API 2c7d3da5 PR-279: Minor edits to various Javadocs CraftBukkit Changes: 01b2e1af4 SPIGOT-7346: Disallow players from executing commands after disconnecting 7fe5ee022 PR-1186: Move getHighestBlockYAt methods from World to RegionAccessor bcc85ef67 PR-1185: Add API for directly setting Display transformation matrices a7cfc778f PR-1176: Add InventoryView#setTitle 563d42226 SPIGOT-519: Add TNTPrimeEvent ccbc6abca Add test for Chunk.LoadLevel mirroring 2926e0513 PR-1171: Add method to get chunk load level 63cad7f84 PR-375: Add accessors to Wither's invulnerability ticks bfd8b1ac8 SPIGOT-7209: Accessors and events for player's exp cooldown f92a41c39 PR-1181: Consolidate Location conversion code 10f866759 SPIGOT-6308: Deprecate the location name property of map items 82f7b658a PR-1095: Add PlayerSpawnChangeEvent b421af7e4 PR-808: Expand the FishHook API 598ad7b3f Increase outdated build delay Spigot Changes: d1bd3bd2 Rebuild patches e4265cc8 SPIGOT-7297: Entity Tracking Range option for Display entities * Work around javac bug * Call PlayerSpawnChangeEvent * Updated Upstream (Bukkit/CraftBukkit/Spigot) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 2fcba9b2 SPIGOT-7347: Add missing documentation and details to ShapedRecipe c278419d PR-854: Move getHighestBlockYAt methods from World to RegionAccessor 201399fb PR-853: Add API for directly setting Display transformation matrices CraftBukkit Changes: 01b2e1af4 SPIGOT-7346: Disallow players from executing commands after disconnecting 7fe5ee022 PR-1186: Move getHighestBlockYAt methods from World to RegionAccessor bcc85ef67 PR-1185: Add API for directly setting Display transformation matrices Spigot Changes: 7da74dae Rebuild patches
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@@ -513,4 +513,84 @@ public class Explosion {
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private BlockInteraction() {}
}
+ // Paper start - Optimize explosions
+ private float getBlockDensity(Vec3 vec3d, Entity entity) {
+ if (!this.level.paperConfig().environment.optimizeExplosions) {
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+ return getSeenPercent(vec3d, entity);
+ }
+ CacheKey key = new CacheKey(this, entity.getBoundingBox());
+ Float blockDensity = this.level.explosionDensityCache.get(key);
+ if (blockDensity == null) {
+ blockDensity = getSeenPercent(vec3d, entity);
+ this.level.explosionDensityCache.put(key, blockDensity);
+ }
+
+ return blockDensity;
+ }
+
+ static class CacheKey {
+ private final Level world;
+ private final double posX, posY, posZ;
+ private final double minX, minY, minZ;
+ private final double maxX, maxY, maxZ;
+
+ public CacheKey(Explosion explosion, AABB aabb) {
+ this.world = explosion.level;
+ this.posX = explosion.x;
+ this.posY = explosion.y;
+ this.posZ = explosion.z;
+ this.minX = aabb.minX;
+ this.minY = aabb.minY;
+ this.minZ = aabb.minZ;
+ this.maxX = aabb.maxX;
+ this.maxY = aabb.maxY;
+ this.maxZ = aabb.maxZ;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+
+ CacheKey cacheKey = (CacheKey) o;
+
+ if (Double.compare(cacheKey.posX, posX) != 0) return false;
+ if (Double.compare(cacheKey.posY, posY) != 0) return false;
+ if (Double.compare(cacheKey.posZ, posZ) != 0) return false;
+ if (Double.compare(cacheKey.minX, minX) != 0) return false;
+ if (Double.compare(cacheKey.minY, minY) != 0) return false;
+ if (Double.compare(cacheKey.minZ, minZ) != 0) return false;
+ if (Double.compare(cacheKey.maxX, maxX) != 0) return false;
+ if (Double.compare(cacheKey.maxY, maxY) != 0) return false;
+ if (Double.compare(cacheKey.maxZ, maxZ) != 0) return false;
+ return world.equals(cacheKey.world);
+ }
+
+ @Override
+ public int hashCode() {
+ int result;
+ long temp;
+ result = world.hashCode();
+ temp = Double.doubleToLongBits(posX);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(posY);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(posZ);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(minX);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(minY);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(minZ);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(maxX);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(maxY);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ temp = Double.doubleToLongBits(maxZ);
+ result = 31 * result + (int) (temp ^ (temp >>> 32));
+ return result;
+ }
+ }
+ // Paper end
}
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 05e8f34044241ce9b6c1afa4f90a92492d3a64b1..9ba534fe0aa464a01fc7ed5927bd190669351100 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -167,6 +167,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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private org.spigotmc.TickLimiter entityLimiter;
private org.spigotmc.TickLimiter tileLimiter;
private int tileTickPosition;
+ public final Map<Explosion.CacheKey, Float> explosionDensityCache = new HashMap<>(); // Paper - Optimize explosions
public CraftWorld getWorld() {
return this.world;