delegate for entityview only

samples/MyBattleground/Program.cs

@@ -12,6 +12,12 @@
 	.Set<Velocity>(new Velocity());
 
 
+ecs.Filter<(Position, Velocity)>()
+	.Query((EntityView entity) => {
+		Console.WriteLine(entity);
+	});
+
+
 var e2 = ecs.Entity("Main");
 ref var pp = ref e2.Get<Position>();
 

src/World.cs

@@ -395,6 +395,8 @@ public bool MoveNext()
 	public void Reset() => _index = -1;
 }
 
+public delegate void QueryFilterDelegateWithEntity(EntityView entity);
+
 public readonly ref partial struct FilterQuery<TFilter> where TFilter : struct
 {
 	private readonly ReadOnlySpan<Archetype> _archetypes;
@@ -404,6 +406,25 @@ internal FilterQuery(ReadOnlySpan<Archetype> archetypes)
 		_archetypes = archetypes;
 	}
 
+	public void Query(QueryFilterDelegateWithEntity fn)
+	{
+		var terms = Lookup.Query<TFilter>.Terms;
+		var query = new QueryInternal(_archetypes, terms);
+		foreach (var arch in query)
+		{
+			foreach (ref readonly var chunk in arch)
+			{
+				ref var entity = ref chunk.Entities[0];
+				ref var last = ref Unsafe.Add(ref entity, chunk.Count);
+				while (Unsafe.IsAddressLessThan(ref entity, ref last))
+				{
+					fn(entity);
+					entity = ref Unsafe.Add(ref entity, 1);
+				}
+			}
+		}
+	}
+
 	public QueryIterator GetEnumerator()
     {
         return new QueryIterator(_archetypes, Lookup.Query<TFilter>.Terms);