From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: YatopiaMC <yatopiamc@gmail.com>
Date: Fri, 23 Oct 2020 09:20:01 -0700
Subject: [PATCH] (Yatopia) Utilities

Co-authored-by: Mykyta Komarnytskyy <nkomarn@hotmail.com>
Co-authored-by: Ivan Pekov <ivan@mrivanplays.com>

Original code by YatopiaMC, licensed under MIT
You can find the original code on https://github.com/YatopiaMC/Yatopia

diff --git a/build.gradle.kts b/build.gradle.kts
index 9e9fd28a76ad6af45b9b45288a5060c6c2a1bcc4..74f8760264aa93af9d4d2895a96ed416a8ef411e 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -49,6 +49,7 @@ dependencies {
     implementation("org.apache.logging.log4j:log4j-api:2.14.1") // Paper
     implementation("org.ow2.asm:asm:9.2")
     implementation("org.ow2.asm:asm-commons:9.2") // Paper - ASM event executor generation
+	implementation("org.apache.commons:commons-rng-core:1.4")
     implementation("com.googlecode.json-simple:json-simple:1.1.1") {
         // This includes junit transitively for whatever reason
         isTransitive = false
diff --git a/src/main/java/xyz/arthurb/mirai/server/util/Constants.java b/src/main/java/xyz/arthurb/mirai/server/util/Constants.java
new file mode 100644
index 0000000000000000000000000000000000000000..f39a4aadc3697d428aede01c36298a1e5b9df5b2
--- /dev/null
+++ b/src/main/java/xyz/arthurb/mirai/server/util/Constants.java
@@ -0,0 +1,6 @@
+package xyz.arthurb.mirai.server.util;
+
+public class Constants {
+    public static final int[] EMPTY_ARRAY = new int[0];
+    public static final int[] ZERO_ARRAY = new int[]{0};
+}
\ No newline at end of file
diff --git a/src/main/java/xyz/arthurb/mirai/server/util/FastRandom.java b/src/main/java/xyz/arthurb/mirai/server/util/FastRandom.java
new file mode 100644
index 0000000000000000000000000000000000000000..1bda325ec0eabaec992145e812785ddfd79d3e23
--- /dev/null
+++ b/src/main/java/xyz/arthurb/mirai/server/util/FastRandom.java
@@ -0,0 +1,64 @@
+package xyz.arthurb.mirai.server.util;
+
+import org.apache.commons.rng.core.source64.XoRoShiRo128PlusPlus;
+
+import java.util.Random;
+import java.util.SplittableRandom;
+
+public class FastRandom extends Random {
+
+    private XoRoShiRo128PlusPlus random;
+
+    public FastRandom() {
+        super();
+        SplittableRandom randomseed = new SplittableRandom();
+        this.random = new XoRoShiRo128PlusPlus(randomseed.nextLong(), randomseed.nextLong());
+    }
+
+    public FastRandom(long seed) {
+        super(seed);
+        SplittableRandom randomseed = new SplittableRandom(seed);
+        this.random = new XoRoShiRo128PlusPlus(randomseed.nextLong(), randomseed.nextLong());
+    }
+
+    @Override
+    public boolean nextBoolean() {
+        return random.nextBoolean();
+    }
+
+    @Override
+    public int nextInt() {
+        return random.nextInt();
+    }
+
+    @Override
+    public float nextFloat() {
+        return (float) random.nextDouble();
+    }
+
+    @Override
+    public double nextDouble() {
+        return random.nextDouble();
+    }
+
+    @Override
+    public synchronized void setSeed(long seed) {
+        SplittableRandom randomseed = new SplittableRandom(seed);
+        this.random = new XoRoShiRo128PlusPlus(randomseed.nextLong(), randomseed.nextLong());
+    }
+
+    @Override
+    public void nextBytes(byte[] bytes) {
+        random.nextBytes(bytes);
+    }
+
+    @Override
+    public int nextInt(int bound) {
+        return random.nextInt(bound);
+    }
+
+    @Override
+    public long nextLong() {
+        return random.nextLong();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/xyz/arthurb/mirai/server/util/TimeUtils.java b/src/main/java/xyz/arthurb/mirai/server/util/TimeUtils.java
new file mode 100644
index 0000000000000000000000000000000000000000..6aac96e4e4e312262faa281f23a52fd9f013c5b5
--- /dev/null
+++ b/src/main/java/xyz/arthurb/mirai/server/util/TimeUtils.java
@@ -0,0 +1,27 @@
+package xyz.arthurb.mirai.server.util;
+
+import java.util.concurrent.TimeUnit;
+
+public class TimeUtils {
+
+    public static String getFriendlyName(TimeUnit unit) {
+        switch (unit) {
+            case NANOSECONDS:
+                return "ns";
+            case MILLISECONDS:
+                return "ms";
+            case MICROSECONDS:
+                return "micros";
+            case SECONDS:
+                return "s";
+            case MINUTES:
+                return "m";
+            case DAYS:
+                return "d";
+            case HOURS:
+                return "h";
+            default:
+                throw new AssertionError();
+        }
+    }
+}
\ No newline at end of file