More actor and UObject progress

src/Prospect.Unreal/Runtime/UGameInstance.cs

@@ -1,4 +1,6 @@
 using Prospect.Unreal.Core;
+using Prospect.Unreal.Core.Objects;
+using Prospect.Unreal.Net;
 using Prospect.Unreal.Net.Actors;
 
 namespace Prospect.Unreal.Runtime;
@@ -8,6 +10,13 @@ public class UGameInstance
     public AGameModeBase? CreateGameModeForURL(FUrl inUrl, UWorld inWorld)
     {
         // TODO: World.SpawnActor
-        return new AGameModeBase();
+        
+        var spawnInfo = new FActorSpawnParameters
+        {
+            SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod.AlwaysSpawn,
+            ObjectFlags = EObjectFlags.RF_Transient
+        };
+        
+        return inWorld.SpawnActor<AGameModeBase>(GUClassArray.StaticClass<AGameModeBase>(), spawnInfo);
     }
 }

src/Prospect.Unreal/Runtime/UWorld.LevelActor.cs

@@ -1,5 +1,7 @@
 using System.Text;
 using Prospect.Unreal.Core;
+using Prospect.Unreal.Core.Math;
+using Prospect.Unreal.Core.Objects;
 using Prospect.Unreal.Net;
 using Prospect.Unreal.Net.Actors;
 
@@ -42,4 +44,54 @@ public partial class UWorld
         Logger.Warning("Login failed: No game mode set");
         return null;
     }
+
+    public AActor SpawnActor(UClass? clazz, FVector? location, FRotator? rotation, FActorSpawnParameters spawnParameters)
+    {
+        var transform = new FTransform();
+        
+        if (location != null)
+        {
+            transform.Location = location;
+        }
+
+        if (rotation != null)
+        {
+            // TODO: FQuat
+            // transform.Rotation = 
+        }
+
+        return SpawnActor(clazz, transform, spawnParameters);
+    }
+
+    public AActor SpawnActor(UClass? clazz, FTransform userTransform, FActorSpawnParameters spawnParameters)
+    {
+        if (clazz == null)
+        {
+            Logger.Warning("SpawnActor failed because no class was specified");
+            return null;
+        }
+        
+        // TODO: Bunch of if checks
+        var levelToSpawnIn = spawnParameters.OverrideLevel;
+        if (levelToSpawnIn == null)
+        {
+            // Spawn in the same level as the owner if we have one.
+            levelToSpawnIn = (spawnParameters.Owner != null) ? spawnParameters.Owner.GetLevel() : _currentLevel;
+        }
+
+        var newActorName = spawnParameters.Name;
+        var template = spawnParameters.Template;
+
+        if (template == null)
+        {
+            // template = clazz.GetDefaultObject();
+        }
+        
+        return null;
+    }
+
+    public T SpawnActor<T>(UClass? clazz, FActorSpawnParameters spawnParameters) where T : AActor
+    {
+        return (T)SpawnActor(clazz, null, null, spawnParameters);
+    }
 }

src/Prospect.Unreal/Runtime/UWorld.cs

@@ -1,5 +1,6 @@
 using Prospect.Unreal.Core;
 using Prospect.Unreal.Core.Names;
+using Prospect.Unreal.Core.Objects;
 using Prospect.Unreal.Exceptions;
 using Prospect.Unreal.Net;
 using Prospect.Unreal.Net.Actors;
@@ -16,7 +17,17 @@ public abstract partial class UWorld : FNetworkNotify, IAsyncDisposable
 
     private UGameInstance? _owningGameInstance;
     private AGameModeBase? _authorityGameMode;
+    
+    /// <summary>
+    ///     Array of levels currently in this world. Not serialized to disk to avoid hard references.
+    /// </summary>
     private List<ULevel> _levels;
+    
+    /// <summary>
+    ///     Pointer to the current level being edited.
+    ///     Level has to be in the Levels array and == PersistentLevel in the game.
+    /// </summary>
+    private ULevel? _currentLevel;
 
     public UWorld()
     {
@@ -40,6 +51,11 @@ public abstract partial class UWorld : FNetworkNotify, IAsyncDisposable
     /// </summary>
     public bool bActorsInitialized { get; private set; }
     
+    /// <summary>
+    ///     Is the world in its actor initialization phase.
+    /// </summary>
+    public bool bStartup { get; private set; }
+    
     /// <summary>
     ///     Whether BeginPlay has been called on actors
     /// </summary>
@@ -149,9 +165,9 @@ public abstract partial class UWorld : FNetworkNotify, IAsyncDisposable
         if (!AreActorsInitialized())
         {
             // Initialize network actors and start execution.
-            for (int i = 0; i < _levels.Count; i++)
+            foreach (var level in _levels)
             {
-                _levels[i].InitializeNetworkActors();
+                level.InitializeNetworkActors();
             }
 
             // Enable actor script calls.