From 4f3f21f72602ab4ce49caa6e7264d369afc98977 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 18 May 2026 18:55:12 +0200
Subject: Particle

---
 lib/core/c++/iterator.hpp          | 28 ++++++++++++++++++++++++++++
 lib/core/c++/particle/particle.hpp |  7 +++++++
 lib/core/tests/iterator.cpp        | 17 +++++++++++++++++
 3 files changed, 52 insertions(+)

(limited to 'lib')

diff --git a/lib/core/c++/iterator.hpp b/lib/core/c++/iterator.hpp
index 866543a..696c521 100644
--- a/lib/core/c++/iterator.hpp
+++ b/lib/core/c++/iterator.hpp
@@ -50,6 +50,34 @@ public:
 	}
 };
 
+template<typename... Tup>
+struct ct_tuple_iterator final {
+private:
+	template<typename Func, uint64_t i>
+	static constexpr saw::error_or<void> apply_i(
+		Func& func,
+		saw::data<sch::Tuple<Tup...>>& tup
+	){
+		if constexpr ( i < sizeof...(Tup) ){
+			auto eov = func(tup.template get<i>());
+			if(eov.is_error()){
+				return eov;
+			}
+			return apply_i<Func,i+1u>(func,tup);
+		}
+
+		return saw::make_void();
+	}
+public:
+	template<typename Func>
+	static constexpr saw::error_or<void> apply(
+		Func&& func,
+		saw::data<sch::Tuple<Tup...>>& tup
+	){
+		return apply_i<Func,0u>(func,tup);
+	}
+};
+
 /* Ambiguous
 template<typename Func>
 void iterate_over(Func&& func, const saw::data<sch::FixedArray<sch::UInt64,3u>>& start, const saw::data<sch::FixedArray<sch::UInt64,3u>>& end, const saw::data<sch::FixedArray<sch::UInt64,3u>>& dist = {{{0u,0u,0u}}}){
diff --git a/lib/core/c++/particle/particle.hpp b/lib/core/c++/particle/particle.hpp
index 7af43dc..01429b2 100644
--- a/lib/core/c++/particle/particle.hpp
+++ b/lib/core/c++/particle/particle.hpp
@@ -238,5 +238,12 @@ constexpr auto broadphase_collision_check = [](
 ) -> bool{
 	return broadphase_collision_distance_squared<T,D,Collision>(left,coll_l,right,coll_r).first;
 };
+
+
+
+namespace impl {
+
+}
+
 }
 }
diff --git a/lib/core/tests/iterator.cpp b/lib/core/tests/iterator.cpp
index 261765a..919c12c 100644
--- a/lib/core/tests/iterator.cpp
+++ b/lib/core/tests/iterator.cpp
@@ -20,6 +20,23 @@ SAW_TEST("Old Iterate"){
 	}, start, end);
 }
 
+SAW_TEST("CT Tuple Iterator"){
+	using namespace kel;
+
+	saw::data<
+		sch::Tuple<
+			sch::Float32,
+			sch::Int16,
+			sch::Float64,
+			sch::UInt32
+		>
+	> tup;
+
+	lbm::ct_tuple_iterator<std::decay_t<decltype(tup)>::Schema>::apply([](auto& val) -> saw::error_or<void> {
+		return saw::make_void();
+	},tup);
+}
+
 SAW_TEST("Old Iterate with Distance 1"){
 	using namespace kel;
 
-- 
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