1 files changed, 47 insertions, 0 deletions
diff --git a/patches/server/0338-Optimize-Pathfinding.patch b/patches/server/0338-Optimize-Pathfinding.patch
new file mode 100644
index 0000000000..281988ce37
--- /dev/null
+++ b/patches/server/0338-Optimize-Pathfinding.patch
@@ -0,0 +1,47 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+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/world/entity/ai/navigation/PathNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
+index 188904c9f0f81db1d63eec953d6746f2dc23dc81..2e9991e6b3c05584002744a2ee2579b1dba218b2 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
++++ b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
+@@ -192,13 +192,33 @@ public abstract class PathNavigation {
+         return this.moveTo(this.createPath(x, y, z, 1), speed);
+     }
+ 
++    // Paper start - Perf: Optimise pathfinding
++    private int lastFailure = 0;
++    private int pathfindFailures = 0;
++    // Paper end - Perf: Optimise pathfinding
++
+     public boolean moveTo(double x, double y, double z, int distance, double speed) {
+         return this.moveTo(this.createPath(x, y, z, distance), speed);
+     }
+ 
+     public boolean moveTo(Entity entity, double speed) {
++        // Paper start - Perf: Optimise pathfinding
++        if (this.pathfindFailures > 10 && this.path == null && net.minecraft.server.MinecraftServer.currentTick < this.lastFailure + 40) {
++            return false;
++        }
++        // Paper end - Perf: Optimise pathfinding
+         Path path = this.createPath(entity, 1);
+-        return path != null && this.moveTo(path, speed);
++        // Paper start - Perf: Optimise pathfinding
++        if (path != null && this.moveTo(path, speed)) {
++            this.lastFailure = 0;
++            this.pathfindFailures = 0;
++            return true;
++        } else {
++            this.pathfindFailures++;
++            this.lastFailure = net.minecraft.server.MinecraftServer.currentTick;
++            return false;
++        }
++        // Paper end - Perf: Optimise pathfinding
+     }
+ 
+     public boolean moveTo(@Nullable Path path, double speed) {