From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: wangxyper <wangxyper@163.com>
Date: Mon, 16 Jan 2023 19:05:17 +0800
Subject: [PATCH] Hearse: Add entity position cache to fix concurrent problem-1

Original license: MIT
Original project: https://github.com/Era4FunMC/Hearse

diff --git a/src/main/java/co/earthme/hearse/util/EntityPositionCache.java b/src/main/java/co/earthme/hearse/util/EntityPositionCache.java
new file mode 100644
index 0000000000000000000000000000000000000000..0ff6ef85758c4f5780860178572e128080470d04
--- /dev/null
+++ b/src/main/java/co/earthme/hearse/util/EntityPositionCache.java
@@ -0,0 +1,24 @@
+package co.earthme.hearse.util;
+
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.Vec3;
+
+public class EntityPositionCache {
+    private final double x;
+    private final double y;
+    private final double z;
+
+    public EntityPositionCache(Entity entity){
+        this.x = entity.getX();
+        this.y = entity.getY();
+        this.z = entity.getZ();
+    }
+
+    public double distanceToSqr(Vec3 vector) {
+        double d0 = this.x - vector.x;
+        double d1 = this.y - vector.y;
+        double d2 = this.z - vector.z;
+
+        return d0 * d0 + d1 * d1 + d2 * d2;
+    }
+}