Paper/Spigot-Server-Patches/0047-Optimize-Pathfinding.patch

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From a582f2795d2b29ef1c1d52de9dafde6db552ec36 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
Date: Thu, 3 Mar 2016 02:02:07 -0600
Subject: [PATCH] Optimize Pathfinding
Prevents pathfinding from spamming failures for things such as
arrow attacks.
diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
index 62cb81516..8111317e3 100644
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--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
+++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
@@ -122,10 +122,26 @@ public abstract class NavigationAbstract {
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}
public boolean a(Entity entity, double d0) {
+ // Paper start - Pathfinding optimizations
+ if (this.pathfindFailures > 10 && this.c == null && MinecraftServer.currentTick < this.lastFailure + 40) {
+ return false;
+ }
+
PathEntity pathentity = this.a(entity);
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- return pathentity != null && this.a(pathentity, d0);
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+ if (pathentity != null && this.a(pathentity, d0)) {
+ this.lastFailure = 0;
+ this.pathfindFailures = 0;
+ return true;
+ } else {
+ this.pathfindFailures++;
+ this.lastFailure = MinecraftServer.currentTick;
+ return false;
+ }
}
+ private int lastFailure = 0;
+ private int pathfindFailures = 0;
+ // Paper end
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public boolean a(@Nullable PathEntity pathentity, double d0) {
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if (pathentity == null) {
@@ -258,6 +274,7 @@ public abstract class NavigationAbstract {
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}
public void q() {
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+ this.pathfindFailures = 0; this.lastFailure = 0; // Paper - Pathfinding optimizations
this.c = null;
}
--
2.18.0
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