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Add Paper's dropped optimize pathfinder patch

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William Blake Galbreath
2020-03-06 23:46:27 -06:00
parent 1f56903ed7
commit 4b797344d7
1 changed files with 59 additions and 0 deletions
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59
patches/server/0109-Optimize-Pathfinding.patch Normal file
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@@ -0,0 +1,59 @@
From e4c0dca628bd0a486acff7b5f2a396c0ee59510c Mon Sep 17 00:00:00 2001
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.
---
.../minecraft/server/NavigationAbstract.java | 24 +++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
index f06764973..ac29f8937 100644
--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
+++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
@@ -11,7 +11,7 @@ public abstract class NavigationAbstract {
protected final EntityInsentient a; public Entity getEntity() { return a; } // Paper - OBFHELPER
protected final World b;
@Nullable
- protected PathEntity c;
+ protected PathEntity c; protected final PathEntity getCurrentPath() { return this.c; } // Purpur - OBFHELPER
protected double d;
private final AttributeInstance p;
protected int e;
@@ -158,10 +158,30 @@ public abstract class NavigationAbstract {
return this.a(this.a(d0, d1, d2, 1), d3);
}
+ // Purpur start - optimise pathfinding
+ private int lastFailure = 0;
+ private int pathfindFailures = 0;
+ // Purpur end
+
public boolean a(Entity entity, double d0) {
+ // Purpur start - Pathfinding optimizations
+ if (this.pathfindFailures > 10 && this.getCurrentPath() == null && MinecraftServer.currentTick < this.lastFailure + 40) {
+ return false;
+ }
+ // Purpur end
PathEntity pathentity = this.a(entity, 1);
- return pathentity != null && this.a(pathentity, d0);
+ // Purpur start - Pathfinding optimizations
+ if (pathentity != null && this.a(pathentity, d0)) {
+ this.lastFailure = 0;
+ this.pathfindFailures = 0;
+ return true;
+ } else {
+ this.pathfindFailures++;
+ this.lastFailure = MinecraftServer.currentTick;
+ return false;
+ }
+ // Purpur end
}
public boolean setDestination(@Nullable PathEntity pathentity, double speed) { return a(pathentity, speed); } // Paper - OBFHELPER
--
2.24.0