From a3011594c0f5859e2359c1f513729857c080dc97 Mon Sep 17 00:00:00 2001
From: Eoghanmc22 <Eoghanmc@icloud.com>
Date: Mon, 10 Aug 2020 17:31:12 -0400
Subject: [PATCH] Tick event thing

---
 .../java/net/minestom/server/UpdateManager.java    | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/main/java/net/minestom/server/UpdateManager.java b/src/main/java/net/minestom/server/UpdateManager.java
index 46d823f14..245f1f89f 100644
--- a/src/main/java/net/minestom/server/UpdateManager.java
+++ b/src/main/java/net/minestom/server/UpdateManager.java
@@ -12,6 +12,7 @@ import net.minestom.server.thread.ThreadProvider;
 import net.minestom.server.utils.thread.MinestomThread;
 import net.minestom.server.utils.validate.Check;
 
+import java.util.ArrayList;
 import java.util.concurrent.ExecutorService;
 
 public final class UpdateManager {
@@ -25,6 +26,8 @@ public final class UpdateManager {
 
     private ThreadProvider threadProvider;
 
+    private ArrayList<Runnable> tickCallbacks = new ArrayList<>();
+
     {
         //threadProvider = new PerInstanceThreadProvider();
         threadProvider = new PerGroupChunkProvider();
@@ -51,6 +54,9 @@ public final class UpdateManager {
                 currentTime = System.nanoTime();
                 final long time = System.currentTimeMillis();
 
+                //Tick Callbacks
+                tickCallbacks.forEach(Runnable::run);
+
                 // Server tick (instance/chunk/entity)
                 threadProvider.update(time);
 
@@ -129,6 +135,14 @@ public final class UpdateManager {
         this.threadProvider.onChunkUnload(instance, chunkX, chunkZ);
     }
 
+    public void addTickCallback(Runnable callback) {
+        tickCallbacks.add(callback);
+    }
+
+    public void removeTickCallback(Runnable callback) {
+        tickCallbacks.remove(callback);
+    }
+
     /**
      * Stop the server loop
      */