From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: peaches94 <peachescu94@gmail.com>
Date: Sun, 10 Jul 2022 15:44:38 -0500
Subject: [PATCH] reduce sensor work

Original license: GPLv3
Original project: https://github.com/Bloom-host/Petal

this patch is focused around the sensors used for ai
delete the line of sight cache less often and use a faster nearby comparison

diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index af8012ad3acb294806a18b6aa4fadb1d3fec6b33..c4c32d3f2ee242e3fdd9d57270b8a9d938014351 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -998,12 +998,14 @@ public abstract class LivingEntity extends Entity {
         }
 
         if (entity != null) {
-            ItemStack itemstack = this.getItemBySlot(EquipmentSlot.HEAD);
+            // petal start - only do itemstack lookup if we need to
+            //ItemStack itemstack = this.getItemBySlot(EquipmentSlot.HEAD);
             EntityType<?> entitytypes = entity.getType();
 
-            if (entitytypes == EntityType.SKELETON && itemstack.is(Items.SKELETON_SKULL) || entitytypes == EntityType.ZOMBIE && itemstack.is(Items.ZOMBIE_HEAD) || entitytypes == EntityType.CREEPER && itemstack.is(Items.CREEPER_HEAD)) {
+            if (entitytypes == EntityType.SKELETON && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.SKELETON_SKULL) || entitytypes == EntityType.ZOMBIE && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.ZOMBIE_HEAD) || entitytypes == EntityType.CREEPER && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.CREEPER_HEAD)) {
                 d0 *= 0.5D;
             }
+            // petal end
         }
 
         return d0;
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index a60cca663da4200d482c19d0b41a9514825a1e9b..c39ceda8e9314dd8338ade29d92baa0c8173d2c9 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -849,10 +849,10 @@ public abstract class Mob extends LivingEntity {
             return;
         }
         // Paper end
+        int i = this.level.getServer().getTickCount() + this.getId(); // petal - move up
         this.level.getProfiler().push("sensing");
-        this.sensing.tick();
+        if (i % 10 == 0) this.sensing.tick(); // petal - only refresh line of sight cache every half second
         this.level.getProfiler().pop();
-        int i = this.level.getServer().getTickCount() + this.getId();
 
         if (i % 2 != 0 && this.tickCount > 1) {
             this.level.getProfiler().push("targetSelector");