From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Mon, 11 Sep 2023 15:47:19 -0400
Subject: [PATCH] Reduce canSee work

Co-authored by: Martijn Muijsers <martijnmuijsers@live.nl>
Co-authored by: MachineBreaker <machinebreaker>

diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index ad056c22eec4fae4f9d4a4b0ec901729f47b4774..02747911e13fc99df7a69f5d382782e07a375fd3 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -855,17 +855,19 @@ public abstract class Level implements LevelAccessor, AutoCloseable, ca.spottedl
         for (int i = 0, len = entities.size(); i < len; ++i) {
             Entity entity = entities.get(i);
 
-            if (checkCanSee && source instanceof net.minecraft.server.level.ServerPlayer && entity instanceof net.minecraft.server.level.ServerPlayer
-                && !((net.minecraft.server.level.ServerPlayer) source).getBukkitEntity().canSee(((net.minecraft.server.level.ServerPlayer) entity).getBukkitEntity())) {
-                continue;
-            }
-
+            // Leaf - move up
             // !entity1.dead && entity1.i && (entity == null || !entity1.x(entity));
             // elide the last check since vanilla calls with entity = null
             // only we care about the source for the canSee check
             if (entity.isRemoved() || !entity.blocksBuilding) {
                 continue;
             }
+            // Leaf end
+
+            if (checkCanSee && source instanceof net.minecraft.server.level.ServerPlayer && entity instanceof net.minecraft.server.level.ServerPlayer
+                && !((net.minecraft.server.level.ServerPlayer) source).getBukkitEntity().canSee(((net.minecraft.server.level.ServerPlayer) entity).getBukkitEntity())) {
+                continue;
+            }
 
             if (net.minecraft.world.phys.shapes.Shapes.joinIsNotEmpty(voxelshape, net.minecraft.world.phys.shapes.Shapes.create(entity.getBoundingBox()), net.minecraft.world.phys.shapes.BooleanOp.AND)) {
                 return false;
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 7294c6cc2cf65e3c142d174025d24d854bbe68ae..c6964b6027e0ac57e3e01deae0da22665f2afc40 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -640,6 +640,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             return false;
         }
         OfflinePlayer other = (OfflinePlayer) obj;
+        if (this == obj) return true; // Leaf - reduce canSee work
         if ((this.getUniqueId() == null) || (other.getUniqueId() == null)) {
             return false;
         }