Implemented toggling of multithreading

kryonet/src/io/anuke/kryonet/DefaultThreadImpl.java

@@ -0,0 +1,40 @@
+package io.anuke.kryonet;
+
+import io.anuke.mindustry.core.ThreadHandler.ThreadProvider;
+import io.anuke.ucore.util.Log;
+
+public class DefaultThreadImpl implements ThreadProvider {
+    private Thread thread;
+
+    @Override
+    public boolean isOnThread() {
+        return Thread.currentThread() == thread;
+    }
+
+    @Override
+    public void sleep(long ms) throws InterruptedException{
+        Thread.sleep(ms);
+    }
+
+    @Override
+    public void start(Runnable run) {
+        if(thread != null){
+            thread.interrupt();
+            thread = null;
+        }
+
+        thread = new Thread(run);
+        thread.setDaemon(true);
+        thread.setName("Update Thread");
+        thread.start();
+        Log.info("Starting logic thread.");
+    }
+
+    @Override
+    public void stop() {
+        if(thread != null){
+            thread.interrupt();
+            thread = null;
+        }
+    }
+}