From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Thu, 18 Aug 2022 16:31:08 +0800
Subject: [PATCH] Cache climbing check for activation

This patch is Powered by Pufferfish(https://github.com/pufferfish-gg/Pufferfish)

diff --git a/io/papermc/paper/entity/activation/ActivationRange.java b/io/papermc/paper/entity/activation/ActivationRange.java
index 2ebee223085fe7926c7f3e555df19ae69f36157e..40f83551c74b594aa5fda82ac67eec72c3cd4942 100644
--- a/io/papermc/paper/entity/activation/ActivationRange.java
+++ b/io/papermc/paper/entity/activation/ActivationRange.java
@@ -215,7 +215,7 @@ public final class ActivationRange {
         }
         // special cases.
         if (entity instanceof final LivingEntity living) {
-            if (living.onClimbable() || living.jumping || living.hurtTime > 0 || !living.activeEffects.isEmpty() || living.isFreezing()) {
+            if (living.onClimableCached() || living.jumping || living.hurtTime > 0 || !living.activeEffects.isEmpty() || living.isFreezing()) { // Leaves - use cached
                 return 1;
             }
             if (entity instanceof final Mob mob && mob.getTarget() != null) {
diff --git a/net/minecraft/world/entity/LivingEntity.java b/net/minecraft/world/entity/LivingEntity.java
index b5f6a76c977bbb5dbb06fb3dd654f0b01aaba692..108430b3934a6f9757e7be50d77e760bbade669c 100644
--- a/net/minecraft/world/entity/LivingEntity.java
+++ b/net/minecraft/world/entity/LivingEntity.java
@@ -2094,6 +2094,22 @@ public abstract class LivingEntity extends Entity implements Attackable {
         return this.lastClimbablePos;
     }
 
+    // Leaves start - cache climbing check
+    private boolean cachedOnClimable = false;
+    private BlockPos lastClimbingPosition = null;
+
+    public boolean onClimableCached() {
+        if (!org.leavesmc.leaves.LeavesConfig.performance.cacheClimbCheck) {
+            return this.onClimbable();
+        }
+        if (!this.blockPosition().equals(this.lastClimbingPosition)) {
+            this.cachedOnClimable = this.onClimbable();
+            this.lastClimbingPosition = this.blockPosition();
+        }
+        return this.cachedOnClimable;
+    }
+    // Leaves end - cache climbing check
+
     public boolean onClimbable() {
         if (this.isSpectator()) {
             return false;