Initial commit: LoChat v1.0.0 with Gradient module

src/main/java/com/loki/lochat/utils/DistanceUtil.java

@@ -0,0 +1,33 @@
+package com.loki.lochat.utils;
+
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+
+public class DistanceUtil {
+
+    private DistanceUtil() {}
+
+    public static boolean isInRange(Player player1, Player player2, int radius) {
+        // Проверка на один мир
+        if (!player1.getWorld().equals(player2.getWorld())) {
+            return false;
+        }
+        
+        Location loc1 = player1.getLocation();
+        Location loc2 = player2.getLocation();
+        
+        // Быстрая проверка по квадрату (без sqrt)
+        double dx = loc1.getX() - loc2.getX();
+        double dz = loc1.getZ() - loc2.getZ();
+        double radiusSquared = (double) radius * radius;
+        
+        return (dx * dx + dz * dz) <= radiusSquared;
+    }
+
+    public static double getDistance(Player player1, Player player2) {
+        if (!player1.getWorld().equals(player2.getWorld())) {
+            return Double.MAX_VALUE;
+        }
+        return player1.getLocation().distance(player2.getLocation());
+    }
+}