Update some things.

Server/Server.cpp

@@ -1,14 +1,37 @@
 #include "Server.h"
-#include "Network/Network.h"
+#include "Network.h"
+#include "World/WorldManager.h"
 
 namespace Artifact {
 
+void Server::init() {
+    for (auto & system : subsystems) {
+        system->init();
+        system->reload();
+    }
+}
+
+void Server::tick() {
+    for (auto & system : subsystems) {
+        system->tick();
+    }
+}
+
 void Server::run() {
+    init();
     
+    auto time = std::chrono::steady_clock::now();
+    while (true) {
+        auto now = std::chrono::steady_clock::now();
+        if (time - now > std::chrono::milliseconds(50)) {
+            tick();
+        }
+    }
 }
 
 void Server::addDefaultSubsystems() {
-    addSubsystem<NetworkServer>();
+    addSubsystem<ServerNetwork>();
+    addSubsystem<WorldManager>();
 }
 
 }