- Removed generic exception from LuaCsSetup.cs services retrival, replaced with exception propagation.

- Fixed `PerScopeLifetime` and `Transient` lifetimes for container services.

Barotrauma/BarotraumaShared/SharedSource/LuaCs/LuaCsSetup.cs

@@ -111,25 +111,20 @@ namespace Barotrauma
          */
         
         private readonly IServicesProvider _servicesProvider;
-        
+
-        public PerformanceCounterService PerformanceCounter => _servicesProvider.TryGetService<PerformanceCounterService>(out var svc)
+        public PerformanceCounterService PerformanceCounter => 
-            ? svc : throw new NullReferenceException("Performance counter service not found!");
+            _servicesProvider.GetService<PerformanceCounterService>();
-        public ILoggerService Logger => _servicesProvider.TryGetService<ILoggerService>(out var svc) 
+        public ILoggerService Logger => _servicesProvider.GetService<ILoggerService>();
-            ? svc : throw new NullReferenceException("Logger service not found!");
+        public IConfigService ConfigService => _servicesProvider.GetService<IConfigService>();
-        public IConfigService ConfigService => _servicesProvider.TryGetService<IConfigService>(out var svc) 
+        public IPackageManagementService PackageManagementService =>
-            ? svc : throw new NullReferenceException("Config Manager service not found!");
+            _servicesProvider.GetService<IPackageManagementService>();
-        public IPackageManagementService PackageManagementService => _servicesProvider.TryGetService<IPackageManagementService>(out var svc) 
+        public IPluginManagementService PluginManagementService =>
-            ? svc : throw new NullReferenceException("Package Manager service not found!");
+            _servicesProvider.GetService<IPluginManagementService>();
-        public IPluginManagementService PluginManagementService => _servicesProvider.TryGetService<IPluginManagementService>(out var svc) 
+        public ILuaScriptManagementService LuaScriptManagementService =>
-            ? svc : throw new NullReferenceException("Plugin Manager service not found!");
+            _servicesProvider.GetService<ILuaScriptManagementService>();
-        public ILuaScriptManagementService LuaScriptManagementService => _servicesProvider.TryGetService<ILuaScriptManagementService>(out var svc) 
+        public INetworkingService NetworkingService => _servicesProvider.GetService<INetworkingService>();
-            ? svc : throw new NullReferenceException("Lua Script Manager service not found!");
+        public IEventService EventService => _servicesProvider.GetService<IEventService>();
-        public INetworkingService NetworkingService => _servicesProvider.TryGetService<INetworkingService>(out var svc) 
+        public LuaGame Game => _servicesProvider.GetService<LuaGame>();
-            ? svc : throw new NullReferenceException("Networking Manager service not found!");
-        public IEventService EventService => _servicesProvider.TryGetService<IEventService>(out var svc) 
-            ? svc : throw new NullReferenceException("Networking Manager service not found!");
-        public LuaGame Game => _servicesProvider.TryGetService<LuaGame>(out var svc)
-            ? svc : throw new NullReferenceException("LuaGame service not found!");
 
         /*
          * === Config Vars 

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Services/ServicesProvider.cs

@@ -11,18 +11,14 @@ namespace Barotrauma.LuaCs.Services;
 public class ServicesProvider : IServicesProvider
 {
     private ServiceContainer _serviceContainerInst;
-    private ServiceContainer ServiceContainer
+    private ServiceContainer ServiceContainer => _serviceContainerInst;
-    {
-        get
-        {
-            // ReSharper disable once ConvertIfStatementToNullCoalescingExpression
-            if (_serviceContainerInst is null)
-                _serviceContainerInst = new ServiceContainer();
-            return _serviceContainerInst;
-        }
-    }
     
     private readonly ReaderWriterLockSlim _serviceLock = new();
+
+    public ServicesProvider()
+    {
+        _serviceContainerInst = new ServiceContainer();
+    }
     
     public void RegisterServiceType<TSvcInterface, TService>(ServiceLifetime lifetime, ILifetime lifetimeInstance = null) where TSvcInterface : class, IService where TService : class, IService, TSvcInterface
     {
@@ -39,9 +35,9 @@ public class ServicesProvider : IServicesProvider
                 // treat these as transient
                 case ServiceLifetime.Transient:
                 case ServiceLifetime.Invalid:
-                case ServiceLifetime.Custom:    // lifetime should not be null here
+                case ServiceLifetime.Custom:
                 default:
-                    lifetimeInstance = new PerRequestLifeTime();
+                    lifetimeInstance = null;
                     break;
             }
         }
@@ -49,7 +45,10 @@ public class ServicesProvider : IServicesProvider
         try
         {
             _serviceLock.EnterReadLock();
-            ServiceContainer.Register<TSvcInterface, TService>(lifetimeInstance);
+            if (lifetimeInstance is not null)
+                ServiceContainer.Register<TSvcInterface, TService>(lifetimeInstance);
+            else
+                ServiceContainer.Register<TSvcInterface, TService>();
             OnServiceRegistered?.Invoke(typeof(TSvcInterface), typeof(TService));
         }
         finally
@@ -145,6 +144,19 @@ public class ServicesProvider : IServicesProvider
         }
     }
 
+    public TSvcInterface GetService<TSvcInterface>() where TSvcInterface : class, IService
+    {
+        try
+        {
+            _serviceLock.EnterReadLock();
+            return ServiceContainer.GetInstance<TSvcInterface>();
+        }
+        finally
+        {
+            _serviceLock.ExitReadLock();
+        }
+    }
+
     public bool TryGetService<TSvcInterface>(string name, out TSvcInterface service) where TSvcInterface : class, IService
     {
         try

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Services/_Interfaces/IServicesProvider.cs

@@ -62,6 +62,13 @@ public interface IServicesProvider
     /// <returns></returns>
     bool TryGetService<TSvcInterface>(out TSvcInterface service) where TSvcInterface : class, IService;
     
+    /// <summary>
+    /// Tries to get a service for the given interface, throws an exception upon failure.
+    /// </summary>
+    /// <typeparam name="TSvcInterface"></typeparam>
+    /// <returns></returns>
+    TSvcInterface GetService<TSvcInterface>() where TSvcInterface : class, IService;
+    
     /// <summary>
     /// Tries to get a service for the given name and interface, returns success/failure.
     /// </summary>