1 files changed, 7 insertions, 0 deletions
diff --git a/entityx/System.cc b/entityx/System.cc
index 278629e..009ac9c 100644
--- a/entityx/System.cc
+++ b/entityx/System.cc
@@ -17,6 +17,13 @@ BaseSystem::Family BaseSystem::family_counter_;
 BaseSystem::~BaseSystem() {
 }
 
+void SystemManager::update_all(TimeDelta dt) {
+  assert(initialized_ && "SystemManager::configure() not called");
+  for (auto &pair : systems_) {
+    pair.second->update(entity_manager_, event_manager_, dt);
+  }
+}
+
 void SystemManager::configure() {
   for (auto &pair : systems_) {
     pair.second->configure(event_manager_);