Add Iterator<>.First()

src/gaemstone.ECS/Entity.cs

@@ -77,6 +77,7 @@ public unsafe readonly partial struct Entity<TContext>
 		=> Add(FlecsBuiltIn.ChildOf, parent);
 
 	public bool IsDisabled =>  Has(FlecsBuiltIn.Disabled);
+	public bool IsEnabled  => !Has(FlecsBuiltIn.Disabled);
 	public Entity<TContext> Disable() => Add(FlecsBuiltIn.Disabled);
 	public Entity<TContext> Enable()  => Remove(FlecsBuiltIn.Disabled);
 

src/gaemstone.ECS/Internal/Iterator.cs

@@ -55,6 +55,9 @@ public unsafe class Iterator
 	public virtual bool Next()
 		=> ecs_iter_next(Handle);
 
+	public bool Any()
+		{ using (this) return Next(); }
+
 	public Entity First()
 		=> new(ecs_iter_first(Handle));
 

src/gaemstone.ECS/Iterator.cs

@@ -29,6 +29,8 @@ public unsafe class Iterator<TContext> : Iterator
 	public new Iterator<TContext> SetVar(Variable var, Entity entity)
 		=> (Iterator<TContext>)base.SetVar(var, entity);
 
+	public new Entity<TContext>? First()
+		=> Entity<TContext>.GetOrNull(World, base.First());
 	public new IEnumerable<Entity<TContext>> GetAllEntities()
 		=> base.GetAllEntities().Select(e => Entity<TContext>.GetOrInvalid(World, e));
 

src/gaemstone.ECS/Rule.cs

@@ -52,9 +52,9 @@ public unsafe class Rule<TContext>
 
 		internal VariableCollection(ecs_rule_t* handle)
 		{
-			// Find the $This variable, if the rule has one.
+			// Find the $this variable, if the rule has one.
 			var thisIndex = ecs_filter_find_this_var(ecs_rule_get_filter(handle));
-			if (thisIndex >= 0) _variables.Add(new(thisIndex, "This"));
+			if (thisIndex >= 0) _variables.Add(new(thisIndex, "this"));
 
 			// Find all the other "accessible" variables.
 			var count = ecs_rule_var_count(handle);

src/gaemstone.ECS/Term.cs

@@ -61,7 +61,7 @@ public enum TermOperKind
 
 public class TermId
 {
-	public static TermId This { get; } = new("$This");
+	public static TermId This { get; } = new("$this");
 
 	public Entity Id { get; }
 	public string? Name { get; }

src/gaemstone.ECS/World+Bare.cs

@@ -17,7 +17,9 @@ public unsafe struct World
 	public World(ecs_world_t* handle)
 		=> Handle = handle;
 
-	public World(params string[] args)
+	/// <summary> Initializes a new Flecs world. </summary>
+	/// <param name="minimal"> If true, doesn't automatically import built-in modules. </param>
+	public World(bool minimal = false)
 	{
 		[UnmanagedCallersOnly]
 		static void Abort() => throw new FlecsAbortException();
@@ -27,14 +29,7 @@ public unsafe struct World
 		api.abort_ = new FnPtr_Void { Pointer = &Abort };
 		ecs_os_set_api(&api);
 
-		if (args?.Length > 0) {
+		Handle = minimal ? ecs_mini() : ecs_init();
-			var ptr = Runtime.CStrings.CStringArray(args);
-			Handle = ecs_init_w_args(args.Length, ptr);
-			for (var i = 0; i < args.Length; i++)
-				Marshal.FreeHGlobal(ptr[i]);
-		} else {
-			Handle = ecs_init();
-		}
 	}
 
 	public bool Progress(TimeSpan delta)

src/gaemstone.ECS/World.cs

@@ -15,8 +15,11 @@ public unsafe struct World<TContext>
 
 	public World(World value)
 		=> Value = value;
-	public World(params string[] args)
+
-		: this(new World(args)) {  }
+	/// <summary> Initializes a new Flecs world. </summary>
+	/// <param name="minimal"> If true, doesn't automatically import built-in modules. </param>
+	public World(bool minimal = false)
+		: this(new World(minimal)) {  }
 
 	public bool Progress(TimeSpan delta) => Value.Progress(delta);
 	public void Quit()    => Value.Quit();