From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JellySquid <jellysquid+atwork@protonmail.com>
Date: Sun, 24 Jan 2021 22:55:55 +0100
Subject: [PATCH] lithium entity

Co-authored-by: Hugo Planque <hookwood01@gmail.com>

diff --git a/src/main/java/net/minecraft/world/entity/EntityLiving.java b/src/main/java/net/minecraft/world/entity/EntityLiving.java
index cd4c380bec0eac231ca0f07420d4a54eb2f71df9..20991dcb5d715e63a7a981c8aa2b3b57a6e2138e 100644
--- a/src/main/java/net/minecraft/world/entity/EntityLiving.java
+++ b/src/main/java/net/minecraft/world/entity/EntityLiving.java
@@ -279,6 +279,9 @@ public abstract class EntityLiving extends Entity {
         this.bg = this.a(new Dynamic(dynamicopsnbt, dynamicopsnbt.createMap((Map) ImmutableMap.of(dynamicopsnbt.createString("memories"), dynamicopsnbt.emptyMap()))));
     }
 
+    private IBlockData lastStateAtFeet = null;
+
+    private long lastPos = Long.MIN_VALUE;
     protected void initAttributes() {} // Purpur
 
     public BehaviorController<?> getBehaviorController() {
@@ -355,6 +358,10 @@ public abstract class EntityLiving extends Entity {
 
     @Override
     public void entityBaseTick() {
+        // Yatopia start - port lithium
+        this.lastStateAtFeet = null;
+        this.lastPos = Long.MIN_VALUE;
+        // Yatopia end
         this.ar = this.as;
         if (this.justCreated) {
             this.getBedPosition().ifPresent(this::a);
@@ -1788,7 +1795,24 @@ public abstract class EntityLiving extends Entity {
     // Airplane end
 
     public IBlockData ds() {
-        return this.world.getBlockStateIfLoaded(this.getChunkCoordinates()); // Yatopia
+        // Yatopia start - port lithium
+        int x = MathHelper.floor(this.locX());
+        int y = MathHelper.floor(this.locY());
+        int z = MathHelper.floor(this.locZ());
+
+        long pos = getChunkCoordinates().asLong();
+
+        if (this.lastPos == pos) {
+            return this.lastStateAtFeet;
+        }
+
+        IBlockData state = this.world.getBlockStateIfLoaded(this.getChunkCoordinates());
+
+        this.lastPos = pos;
+        this.lastStateAtFeet = state;
+
+        return state;
+        // Yatopia end
     }
 
     private boolean c(BlockPosition blockposition, IBlockData iblockdata) {