public GameEngineBase(ContentManager contentManager, IServiceRegistry services, GameSystemCollection gameSystems = null)
{
Logger = GlobalLogger.GetLogger(GetType().GetTypeInfo().Name);
GameClockManager = new GameClockManager(PhysicsGameTime);
_targetTimeDriftAdjustmentThreshold = GameClockManager.SimulationDeltaTime.Ticks / 10; // 10% of a single sim step
Services = (ServiceRegistry)services;
Content = contentManager;
GameSystems = gameSystems ?? new GameSystemCollection(Services);
// Replacing existing IGameSystemCollection with our own
var existingGameSystems = Services.GetService <IGameSystemCollection>();
if (existingGameSystems != null)
{
Services.RemoveService <IGameSystemCollection>();
}
Services.AddOrOverwriteService <IGameSystemCollection>(GameSystems);
var networkAssetDatabase = new NetworkAssetDatabase(Content, assetFolderUrls: new[] { "Prefabs", "Scenes" });
Services.AddOrOverwriteService(networkAssetDatabase);
Services.AddOrOverwriteService(GameClockManager);
var gameSettingsService = services.GetSafeServiceAs <IGameSettingsService>();
Settings = gameSettingsService.Settings;
}