Synchronization to avoid problems

Author: d0by1

src/main/java/eu/decentsoftware/holograms/api/animations/AnimationManager.java

@@ -37,12 +37,12 @@ public void tick() {
         step.incrementAndGet();
     }
 
-    public void destroy() {
+    public synchronized void destroy() {
         this.unregister();
         this.animationMap.clear();
     }
 
-    public void reload() {
+    public synchronized void reload() {
         this.animationMap.clear();
         this.registerAnimation(new TypewriterAnimation());
         this.registerAnimation(new WaveAnimation());

src/main/java/eu/decentsoftware/holograms/api/holograms/HologramManager.java

@@ -55,7 +55,7 @@ public HologramManager() {
 	}
 
 	@Override
-	public void tick() {
+	public synchronized void tick() {
 		for (Hologram hologram : Hologram.getCachedHolograms()) {
 			if (hologram.isEnabled()) {
 				for (Player player : Bukkit.getOnlinePlayers()) {
@@ -150,15 +150,15 @@ public void onQuit(@NonNull Player player) {
 	/**
 	 * Reload this manager and all the holograms.
 	 */
-	public void reload() {
+	public synchronized void reload() {
 		this.destroy();
 		this.loadHolograms();
 	}
 
 	/**
 	 * Destroy this manager and all the holograms.
 	 */
-	public void destroy() {
+	public synchronized void destroy() {
 		// Destroy registered holograms
 		for (Hologram hologram : getHolograms()) {
 			hologram.destroy();