Let physics run for a while to prevent bugs

Game.cpp

@@ -185,6 +185,7 @@ class App : public OgreBites::ApplicationContext {
 		ECS::Vector2 mouse{ 0, 0 };
 		float wheel_y;
 		bool mouse_moved = false, wheel_moved = false;
+		float mInitDelay;
 
 	public:
 		Ogre::Timer fps_timer;
@@ -195,6 +196,7 @@ class App : public OgreBites::ApplicationContext {
 			, mApp(app)
 			, fast(false)
 			, control(0)
+			, mInitDelay(1.0)
 		{
 		}
 		bool isGuiEnabled()
@@ -322,6 +324,8 @@ class App : public OgreBites::ApplicationContext {
 			}
 			if (!isGuiEnabled()) {
 				mApp->updateWorld(evt.timeSinceLastFrame);
+				if (mInitDelay >= 0.0f)
+					mInitDelay -= evt.timeSinceLastFrame;
 			}
 			if (!isGuiEnabled() && ECS::get().has<ECS::Input>()) {
 				ECS::Input &input =