From b9120a4c1f05660508e9dd62ea9eb01f01be3c79 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 11 Nov 2017 17:57:39 -0500
Subject: [PATCH] Improve Structures Checking
Improves performance by keying every chunk thats part of a structure to a hashmap
instead of only the first one.
This allows us to avoid iterating the entire structures value set to see
if a block position is inside of a structure.
This should have pretty decent performance improvement to any standard world
that has been around for a whilewith lots of structures due to ineffeciencies
in how MC stores structures (even unloaded chunks has structured data loaded)
diff --git a/src/main/java/net/minecraft/server/StructureBoundingBox.java b/src/main/java/net/minecraft/server/StructureBoundingBox.java
index db419cd99..d9329bd42 100644
--- a/src/main/java/net/minecraft/server/StructureBoundingBox.java
+++ b/src/main/java/net/minecraft/server/StructureBoundingBox.java
@@ -4,12 +4,14 @@ import com.google.common.base.MoreObjects;
public class StructureBoundingBox {
- public int a;
- public int b;
- public int c;
- public int d;
- public int e;
- public int f;
+ public int a; // Paper - If changes, verify low/high getters
+ public int b; // Paper - If changes, verify low/high getters
+ public int c; // Paper - If changes, verify low/high getters
+ public int d; // Paper - If changes, verify low/high getters
+ public int e; // Paper - If changes, verify low/high getters
+ public int f; // Paper - If changes, verify low/high getters
+ public BaseBlockPosition getLowPosition() { return new BaseBlockPosition(a, b, c); } // Paper
+ public BaseBlockPosition getHighPosition() { return new BaseBlockPosition(d, e, f); } // Paper
public StructureBoundingBox() {}
@@ -114,6 +116,7 @@ public class StructureBoundingBox {
this.f += k;
}
+ public boolean contains(BaseBlockPosition baseblockposition) { return b(baseblockposition); } // Paper - OBFHELPER
public boolean b(BaseBlockPosition baseblockposition) {
return baseblockposition.getX() >= this.a && baseblockposition.getX() <= this.d && baseblockposition.getZ() >= this.c && baseblockposition.getZ() <= this.f && baseblockposition.getY() >= this.b && baseblockposition.getY() <= this.e;
}
diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index e8263baa4..f4dfba8f3 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -6,6 +6,7 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.objects.ObjectIterator;
import java.util.Iterator;
+import java.util.List;
import java.util.Random;
import javax.annotation.Nullable;
@@ -14,6 +15,7 @@ public abstract class StructureGenerator extends WorldGenBase {
private final Timing timing = MinecraftTimings.getStructureTiming(this); // Paper
private PersistentStructure a;
protected Long2ObjectMap<StructureStart> c = new Long2ObjectOpenHashMap(1024);
+ protected Long2ObjectMap<StructureStart> allStructures = new Long2ObjectOpenHashMap(1024); // Paper - Holds ref to structures for every chunk its part of, where as the one above this only holds the vanilla oriented ones.
public StructureGenerator() {}
@@ -29,6 +31,7 @@ public abstract class StructureGenerator extends WorldGenBase {
if (this.a(i, j)) {
StructureStart structurestart = this.b(i, j);
+ populateStructure(structurestart); // Paper
this.c.put(ChunkCoordIntPair.a(i, j), structurestart);
if (structurestart.a()) {
this.a(i, j, structurestart);
@@ -106,6 +109,19 @@ public abstract class StructureGenerator extends WorldGenBase {
@Nullable
protected StructureStart c(BlockPosition blockposition) {
+ // Paper start - replace method
+ StructureStart structureStart = allStructures.get(ChunkCoordIntPair.asLong(blockposition));
+ if (structureStart != null && structureStart.isSizeable() && structureStart.getBoundingBox().contains(blockposition)) {
+ List<StructurePiece> structurePieces = structureStart.getStructurePieces();
+ for (StructurePiece piece : structurePieces) {
+ if (piece.getBoundingBox().contains(blockposition)) {
+ return structureStart;
+ }
+ }
+ }
+
+ return null;
+ /*
ObjectIterator objectiterator = this.c.values().iterator();
while (objectiterator.hasNext()) {
@@ -125,11 +141,16 @@ public abstract class StructureGenerator extends WorldGenBase {
}
return null;
+ */
}
public boolean a(World world, BlockPosition blockposition) {
if (this.g == null) return false; // Paper
this.a(world);
+ // Paper start - Replace method
+ StructureStart structureStart = this.allStructures.get(ChunkCoordIntPair.asLong(blockposition));
+ return structureStart != null && structureStart.isSizeable() && structureStart.getBoundingBox().contains(blockposition);
+ /* // comment out rest
ObjectIterator objectiterator = this.c.values().iterator();
StructureStart structurestart;
@@ -142,7 +163,7 @@ public abstract class StructureGenerator extends WorldGenBase {
structurestart = (StructureStart) objectiterator.next();
} while (!structurestart.a() || !structurestart.b().b((BaseBlockPosition) blockposition));
- return true;
+ return true;*/ // Paper end
}
@Nullable
@@ -177,6 +198,7 @@ public abstract class StructureGenerator extends WorldGenBase {
StructureStart structurestart = WorldGenFactory.a(nbttagcompound1, world);
if (structurestart != null) {
+ populateStructure(structurestart); // Paper
this.c.put(ChunkCoordIntPair.a(i, j), structurestart);
}
}
@@ -187,6 +209,27 @@ public abstract class StructureGenerator extends WorldGenBase {
}
+ // Paper start
+ private void populateStructure(StructureStart structurestart) {
+ for (StructurePiece piece : structurestart.getStructurePieces()) {
+ populateStructure(structurestart, piece.getBoundingBox());
+ }
+ populateStructure(structurestart, structurestart.getBoundingBox());
+ }
+ private void populateStructure(StructureStart structurestart, StructureBoundingBox bb) {
+ if (bb == null) {
+ return;
+ }
+ final BaseBlockPosition low = bb.getLowPosition();
+ final BaseBlockPosition high = bb.getHighPosition();
+ for (int x = low.getX() >> 4, maxX = high.getX() >> 4; x <= maxX; x++) {
+ for (int z = low.getZ() >> 4, maxZ = high.getZ() >> 4; z <= maxZ; z++) {
+ allStructures.put(ChunkCoordIntPair.asLong(x, z), structurestart);
+ }
+ }
+ }
+ // Paper end
+
private void a(int i, int j, StructureStart structurestart) {
this.a.a(structurestart.a(i, j), i, j);
this.a.c();
diff --git a/src/main/java/net/minecraft/server/StructurePiece.java b/src/main/java/net/minecraft/server/StructurePiece.java
index 93903bc67..fcc13f811 100644
--- a/src/main/java/net/minecraft/server/StructurePiece.java
+++ b/src/main/java/net/minecraft/server/StructurePiece.java
@@ -53,6 +53,7 @@ public abstract class StructurePiece {
public abstract boolean a(World world, Random random, StructureBoundingBox structureboundingbox);
+ public StructureBoundingBox getBoundingBox() { return d(); } // Paper - OBFHELPER
public StructureBoundingBox d() {
return this.l;
}
diff --git a/src/main/java/net/minecraft/server/StructureStart.java b/src/main/java/net/minecraft/server/StructureStart.java
index b6abc74e0..f9bb953d0 100644
--- a/src/main/java/net/minecraft/server/StructureStart.java
+++ b/src/main/java/net/minecraft/server/StructureStart.java
@@ -19,10 +19,12 @@ public abstract class StructureStart {
this.d = j;
}
+ public StructureBoundingBox getBoundingBox() { return b(); } // Paper - OBFHELPER
public StructureBoundingBox b() {
return this.b;
}
+ public List<StructurePiece> getStructurePieces() { return c(); } // Paper - OBFHELPER
public List<StructurePiece> c() {
return this.a;
}
@@ -137,7 +139,7 @@ public abstract class StructureStart {
}
- public boolean a() {
+ public boolean isSizeable() { return a(); } public boolean a() { // Paper - OBFHELPER
return true;
}
--
2.16.1