geforkt von Mirrors/Paper
7df472527f
A long standing bug in spigot and its derivatives was the fact that players taking damage while blocking with a shield would not receive invulnerability, while they do in vanilla. This enabled the pvp technique of disabling a shield and immediately attacking again to knock a player into the air. While upstream fixed this and properly aligned itself with vanilla damage logic (in this specific case) changing such long standing behaviour has some downsides. To allow players used to this specific bug to still use it, this patch introduces a configuration option to re-introduce said bug. As there is no easy way to *only* re-add this bug, the option is found in the unsupported section as it may introduce other damage related disparity from vanilla.
134 Zeilen
7.0 KiB
Diff
134 Zeilen
7.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Tue, 4 Aug 2020 22:24:15 +0200
|
|
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/world/level/pathfinder/PathFinder.java b/src/main/java/net/minecraft/world/level/pathfinder/PathFinder.java
|
|
index 8a483c8d2a54617d78af19de32fa0ded71b3223a..18bbb3f8f99849333ff4bc020c8ce758a69312a5 100644
|
|
--- a/src/main/java/net/minecraft/world/level/pathfinder/PathFinder.java
|
|
+++ b/src/main/java/net/minecraft/world/level/pathfinder/PathFinder.java
|
|
@@ -38,8 +38,12 @@ public class PathFinder {
|
|
if (node == null) {
|
|
return null;
|
|
} else {
|
|
- Map<Target, BlockPos> map = positions.stream()
|
|
- .collect(Collectors.toMap(pos -> this.nodeEvaluator.getTarget((double)pos.getX(), (double)pos.getY(), (double)pos.getZ()), Function.identity()));
|
|
+ // Paper start - Perf: remove streams and optimize collection
|
|
+ List<Map.Entry<Target, BlockPos>> map = Lists.newArrayList();
|
|
+ for (final BlockPos pos : positions) {
|
|
+ map.add(new java.util.AbstractMap.SimpleEntry<>(this.nodeEvaluator.getTarget(pos.getX(), pos.getY(), pos.getZ()), pos));
|
|
+ }
|
|
+ // Paper end - Perf: remove streams and optimize collection
|
|
Path path = this.findPath(world.getProfiler(), node, map, followRange, distance, rangeMultiplier);
|
|
this.nodeEvaluator.done();
|
|
return path;
|
|
@@ -47,18 +51,19 @@ public class PathFinder {
|
|
}
|
|
|
|
@Nullable
|
|
- private Path findPath(ProfilerFiller profiler, Node startNode, Map<Target, BlockPos> positions, float followRange, int distance, float rangeMultiplier) {
|
|
+ // Paper start - Perf: remove streams and optimize collection
|
|
+ private Path findPath(ProfilerFiller profiler, Node startNode, List<Map.Entry<Target, BlockPos>> positions, float followRange, int distance, float rangeMultiplier) {
|
|
profiler.push("find_path");
|
|
profiler.markForCharting(MetricCategory.PATH_FINDING);
|
|
- Set<Target> set = positions.keySet();
|
|
+ // Set<Target> set = positions.keySet();
|
|
startNode.g = 0.0F;
|
|
- startNode.h = this.getBestH(startNode, set);
|
|
+ startNode.h = this.getBestH(startNode, positions); // Paper - optimize collection
|
|
startNode.f = startNode.h;
|
|
this.openSet.clear();
|
|
this.openSet.insert(startNode);
|
|
- Set<Node> set2 = ImmutableSet.of();
|
|
+ // Set<Node> set2 = ImmutableSet.of(); // Paper - unused - diff on change
|
|
int i = 0;
|
|
- Set<Target> set3 = Sets.newHashSetWithExpectedSize(set.size());
|
|
+ List<Map.Entry<Target, BlockPos>> entryList = Lists.newArrayListWithExpectedSize(positions.size()); // Paper - optimize collection
|
|
int j = (int)((float)this.maxVisitedNodes * rangeMultiplier);
|
|
|
|
while (!this.openSet.isEmpty()) {
|
|
@@ -69,14 +74,18 @@ public class PathFinder {
|
|
Node node = this.openSet.pop();
|
|
node.closed = true;
|
|
|
|
- for (Target target : set) {
|
|
+ // Paper start - optimize collection
|
|
+ for (int i1 = 0; i1 < positions.size(); i1++) {
|
|
+ final Map.Entry<Target, BlockPos> entry = positions.get(i1);
|
|
+ Target target = entry.getKey();
|
|
if (node.distanceManhattan(target) <= (float)distance) {
|
|
target.setReached();
|
|
- set3.add(target);
|
|
+ entryList.add(entry);
|
|
+ // Paper end - Perf: remove streams and optimize collection
|
|
}
|
|
}
|
|
|
|
- if (!set3.isEmpty()) {
|
|
+ if (!entryList.isEmpty()) { // Paper - Perf: remove streams and optimize collection; rename
|
|
break;
|
|
}
|
|
|
|
@@ -91,7 +100,7 @@ public class PathFinder {
|
|
if (node2.walkedDistance < followRange && (!node2.inOpenSet() || g < node2.g)) {
|
|
node2.cameFrom = node;
|
|
node2.g = g;
|
|
- node2.h = this.getBestH(node2, set) * 1.5F;
|
|
+ node2.h = this.getBestH(node2, positions) * 1.5F; // Paper - Perf: remove streams and optimize collection
|
|
if (node2.inOpenSet()) {
|
|
this.openSet.changeCost(node2, node2.g + node2.h);
|
|
} else {
|
|
@@ -103,23 +112,32 @@ public class PathFinder {
|
|
}
|
|
}
|
|
|
|
- Optional<Path> optional = !set3.isEmpty()
|
|
- ? set3.stream().map(node -> this.reconstructPath(node.getBestNode(), positions.get(node), true)).min(Comparator.comparingInt(Path::getNodeCount))
|
|
- : set.stream()
|
|
- .map(targetx -> this.reconstructPath(targetx.getBestNode(), positions.get(targetx), false))
|
|
- .min(Comparator.comparingDouble(Path::getDistToTarget).thenComparingInt(Path::getNodeCount));
|
|
+ // Paper start - Perf: remove streams and optimize collection
|
|
+ Path best = null;
|
|
+ boolean entryListIsEmpty = entryList.isEmpty();
|
|
+ Comparator<Path> comparator = entryListIsEmpty ? Comparator.comparingInt(Path::getNodeCount)
|
|
+ : Comparator.comparingDouble(Path::getDistToTarget).thenComparingInt(Path::getNodeCount);
|
|
+ for (Map.Entry<Target, BlockPos> entry : entryListIsEmpty ? positions : entryList) {
|
|
+ Path path = this.reconstructPath(entry.getKey().getBestNode(), entry.getValue(), !entryListIsEmpty);
|
|
+ if (best == null || comparator.compare(path, best) < 0)
|
|
+ best = path;
|
|
+ }
|
|
profiler.pop();
|
|
- return optional.isEmpty() ? null : optional.get();
|
|
+ return best;
|
|
+ // Paper end - Perf: remove streams and optimize collection
|
|
}
|
|
|
|
protected float distance(Node a, Node b) {
|
|
return a.distanceTo(b);
|
|
}
|
|
|
|
- private float getBestH(Node node, Set<Target> targets) {
|
|
+ private float getBestH(Node node, List<Map.Entry<Target, BlockPos>> targets) { // Paper - Perf: remove streams and optimize collection; Set<Target> -> List<Map.Entry<Target, BlockPos>>
|
|
float f = Float.MAX_VALUE;
|
|
|
|
- for (Target target : targets) {
|
|
+ // Paper start - Perf: remove streams and optimize collection
|
|
+ for (int i = 0, targetsSize = targets.size(); i < targetsSize; i++) {
|
|
+ final Target target = targets.get(i).getKey();
|
|
+ // Paper end - Perf: remove streams and optimize collection
|
|
float g = node.distanceTo(target);
|
|
target.updateBest(g, node);
|
|
f = Math.min(g, f);
|