163 lines
7.6 KiB
Diff
163 lines
7.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Mon, 11 May 2020 04:18:54 -0400
|
|
Subject: [PATCH] Optimize Pathfinder - Remove Streams / Optimized collections
|
|
|
|
I utilized the IDE to convert streams to non streams code, so shouldn't
|
|
be any risk of behavior change. Only did minor optimization of the
|
|
generated code set to remove unnecessary things.
|
|
|
|
I expect us to just drop this patch on next major update and re-apply
|
|
it with the IDE again and re-apply the collections optimization.
|
|
|
|
Optimize collection by creating a list instead of a set of the key and value.
|
|
|
|
This lets us get faster foreach iteration, as well as avoids map lookups on
|
|
the values when needed.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/Pathfinder.java b/src/main/java/net/minecraft/server/Pathfinder.java
|
|
index 67c63cfe333e328cbd00ada970bd81efebfe30b6..71b96943d865105f279dda613b7ac6b3ffed793b 100644
|
|
--- a/src/main/java/net/minecraft/server/Pathfinder.java
|
|
+++ b/src/main/java/net/minecraft/server/Pathfinder.java
|
|
@@ -31,9 +31,15 @@ public class Pathfinder {
|
|
this.a.a();
|
|
this.e.a(chunkcache, entityinsentient);
|
|
PathPoint pathpoint = this.e.b();
|
|
- Map<PathDestination, BlockPosition> map = (Map) set.stream().collect(Collectors.toMap((blockposition) -> {
|
|
- return this.e.a((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
|
|
- }, Function.identity()));
|
|
+ // Paper start - remove streams - and optimize collection
|
|
+ List<Map.Entry<PathDestination, BlockPosition>> map = new java.util.ArrayList<>();
|
|
+ for (BlockPosition blockposition : set) {
|
|
+ // cast is important
|
|
+ //noinspection RedundantCast
|
|
+ PathDestination path = this.e.a((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
|
|
+ map.add(new java.util.AbstractMap.SimpleEntry<>(path, blockposition));
|
|
+ }
|
|
+ // Paper end
|
|
PathEntity pathentity = this.a(pathpoint, map, f, i, f1);
|
|
|
|
this.e.a();
|
|
@@ -41,11 +47,11 @@ public class Pathfinder {
|
|
}
|
|
|
|
@Nullable
|
|
- private PathEntity a(PathPoint pathpoint, Map<PathDestination, BlockPosition> map, float f, int i, float f1) {
|
|
- Set<PathDestination> set = map.keySet();
|
|
+ private PathEntity a(PathPoint pathpoint, java.util.List<java.util.Map.Entry<PathDestination, BlockPosition>> list, float f, int i, float f1) { // Paper - list instead of set
|
|
+ //Set<PathDestination> set = map.keySet(); // Paper
|
|
|
|
pathpoint.e = 0.0F;
|
|
- pathpoint.f = this.a(pathpoint, set);
|
|
+ pathpoint.f = this.a(pathpoint, list); // Paper - list instead of map
|
|
pathpoint.g = pathpoint.f;
|
|
this.a.a();
|
|
this.b.clear();
|
|
@@ -62,10 +68,23 @@ public class Pathfinder {
|
|
PathPoint pathpoint1 = this.a.c();
|
|
|
|
pathpoint1.i = true;
|
|
- set.stream().filter((pathdestination) -> {
|
|
- return pathpoint1.c((PathPoint) pathdestination) <= (float) i;
|
|
- }).forEach(PathDestination::e);
|
|
- if (set.stream().anyMatch(PathDestination::f)) {
|
|
+ // Paper start - remove streams
|
|
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
|
|
+ PathDestination pathdestination = list.get(i1).getKey();
|
|
+ if (pathpoint1.c(pathdestination) <= (float) i) {
|
|
+ pathdestination.e();
|
|
+ }
|
|
+ }
|
|
+ boolean result = false;
|
|
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
|
|
+ PathDestination pathdestination = list.get(i1).getKey();
|
|
+ if (pathdestination.f()) {
|
|
+ result = true;
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+ if (result) {
|
|
+ // Paper end
|
|
break;
|
|
}
|
|
|
|
@@ -82,7 +101,7 @@ public class Pathfinder {
|
|
if (pathpoint2.j < f && (!pathpoint2.c() || f3 < pathpoint2.e)) {
|
|
pathpoint2.h = pathpoint1;
|
|
pathpoint2.e = f3;
|
|
- pathpoint2.f = this.a(pathpoint2, set) * 1.5F;
|
|
+ pathpoint2.f = this.a(pathpoint2, list) * 1.5F; // Paper - use list instead of map
|
|
if (pathpoint2.c()) {
|
|
this.a.a(pathpoint2, pathpoint2.e + pathpoint2.f);
|
|
} else {
|
|
@@ -94,36 +113,49 @@ public class Pathfinder {
|
|
}
|
|
}
|
|
|
|
- Stream stream;
|
|
|
|
- if (set.stream().anyMatch(PathDestination::f)) {
|
|
- stream = set.stream().filter(PathDestination::f).map((pathdestination) -> {
|
|
- return this.a(pathdestination.d(), (BlockPosition) map.get(pathdestination), true);
|
|
- }).sorted(Comparator.comparingInt(PathEntity::e));
|
|
- } else {
|
|
- stream = set.stream().map((pathdestination) -> {
|
|
- return this.a(pathdestination.d(), (BlockPosition) map.get(pathdestination), false);
|
|
- }).sorted(Comparator.comparingDouble(PathEntity::l).thenComparingInt(PathEntity::e));
|
|
+ // Paper start - remove streams
|
|
+ boolean result = false;
|
|
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
|
|
+ PathDestination pathDestination = list.get(i1).getKey(); // Paper
|
|
+ if (pathDestination.f()) {
|
|
+ result = true;
|
|
+ break;
|
|
+ }
|
|
}
|
|
-
|
|
- Optional<PathEntity> optional = stream.findFirst();
|
|
-
|
|
- if (!optional.isPresent()) {
|
|
- return null;
|
|
+ List<PathEntity> candidates = new java.util.ArrayList<>();
|
|
+ if (result) {
|
|
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
|
|
+ Map.Entry<PathDestination, BlockPosition> entry = list.get(i1);
|
|
+ PathDestination pathdestination = entry.getKey();
|
|
+ if (pathdestination.f()) {
|
|
+ PathEntity pathEntity = this.a(pathdestination.d(), entry.getValue(), true);
|
|
+ candidates.add(pathEntity);
|
|
+ }
|
|
+ }
|
|
+ if (candidates.isEmpty()) return null;
|
|
+ candidates.sort(Comparator.comparingInt(PathEntity::e));
|
|
} else {
|
|
- PathEntity pathentity = (PathEntity) optional.get();
|
|
-
|
|
- return pathentity;
|
|
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
|
|
+ Map.Entry<PathDestination, BlockPosition> entry = list.get(i1);
|
|
+ PathDestination pathdestination = entry.getKey();
|
|
+ PathEntity pathEntity = this.a(pathdestination.d(), entry.getValue(), false);
|
|
+ candidates.add(pathEntity);
|
|
+ }
|
|
+ if (candidates.isEmpty()) return null;
|
|
+ candidates.sort(Comparator.comparingDouble(PathEntity::l).thenComparingInt(PathEntity::e));
|
|
}
|
|
+ return candidates.get(0);
|
|
+ // Paper end
|
|
}
|
|
|
|
- private float a(PathPoint pathpoint, Set<PathDestination> set) {
|
|
+ private float a(PathPoint pathpoint, java.util.List<java.util.Map.Entry<PathDestination, BlockPosition>> list) {
|
|
float f = Float.MAX_VALUE;
|
|
|
|
float f1;
|
|
|
|
- for (Iterator iterator = set.iterator(); iterator.hasNext(); f = Math.min(f1, f)) {
|
|
- PathDestination pathdestination = (PathDestination) iterator.next();
|
|
+ for (int i = 0, listSize = list.size(); i < listSize; f = Math.min(f1, f), i++) { // Paper
|
|
+ PathDestination pathdestination = list.get(i).getKey(); // Paper
|
|
|
|
f1 = pathpoint.a(pathdestination);
|
|
pathdestination.a(f1, pathpoint);
|