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] Petal: Reduce sensor work

Original license: GPL v3
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 fe493fd87d8435035d17dae59d4ad2645feedfa3..dbe3948a2d1e33e55f628f50d2900cb5f2dcb592 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1036,22 +1036,24 @@ public abstract class LivingEntity extends Entity implements Attackable {
         }
 
         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();
 
             // Purpur start
-            if (entitytypes == EntityType.SKELETON && itemstack.is(Items.SKELETON_SKULL)) {
+            if (entitytypes == EntityType.SKELETON && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.SKELETON_SKULL)) {
                 d0 *= entity.level().purpurConfig.skeletonHeadVisibilityPercent;
             }
-            else if (entitytypes == EntityType.ZOMBIE && itemstack.is(Items.ZOMBIE_HEAD)) {
+            else if (entitytypes == EntityType.ZOMBIE && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.ZOMBIE_HEAD)) {
                 d0 *= entity.level().purpurConfig.zombieHeadVisibilityPercent;
             }
-            else if (entitytypes == EntityType.CREEPER && itemstack.is(Items.CREEPER_HEAD)) {
+            else if (entitytypes == EntityType.CREEPER && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.CREEPER_HEAD)) {
                 d0 *= entity.level().purpurConfig.creeperHeadVisibilityPercent;
             }
-            else if ((entitytypes == EntityType.PIGLIN || entitytypes == EntityType.PIGLIN_BRUTE) && itemstack.is(Items.PIGLIN_HEAD)) {
+            else if ((entitytypes == EntityType.PIGLIN || entitytypes == EntityType.PIGLIN_BRUTE) && this.getItemBySlot(EquipmentSlot.HEAD).is(Items.PIGLIN_HEAD)) {
                 d0 *= entity.level().purpurConfig.piglinHeadVisibilityPercent;
             }
+            // petal end
             // Purpur end
 
             // Purpur start
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index b27b1df608bca3242bed8bc5b7603d0e88fa50bf..b4bd0d158419f9c8a6b473bf16716c2cf7c62cb7 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -930,8 +930,8 @@ public abstract class Mob extends LivingEntity implements Targeting {
             return;
         }
         // Paper end);
-        this.sensing.tick();
-        int i = this.level().getServer().getTickCount() + this.getId();
+        int i = this.level().getServer().getTickCount() + this.getId(); // petal - move up
+        if (i % 10 == 0) this.sensing.tick(); // petal - only refresh line of sight cache every half second
 
         if (i % 2 != 0 && this.tickCount > 1) {
             if (this.targetSelector.inactiveTick(this.activatedPriority, false)) // Pufferfish - use this to alternate ticking