From 5fee9c698f5f1ebe6ef8bf07f5a75e04dab92681 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 9 Feb 2026 16:49:12 +0100
Subject: Add rar as dep and implement collision

---
 lib/core/c++/collision.hpp |  6 +++---
 lib/core/c++/hlbm.hpp      | 10 +++++++++-
 lib/core/c++/psm.hpp       | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 47 insertions(+), 4 deletions(-)
 create mode 100644 lib/core/c++/psm.hpp

(limited to 'lib/core')

diff --git a/lib/core/c++/collision.hpp b/lib/core/c++/collision.hpp
index 6c39646..349833f 100644
--- a/lib/core/c++/collision.hpp
+++ b/lib/core/c++/collision.hpp
@@ -118,8 +118,8 @@ public:
 		auto& dfs_old = (is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
 		// auto& dfs = (not is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
 
-		saw::data<T> rho;
-		saw::data<sch::FixedArray<T,Descriptor::D>> vel;
+		saw::data<sch::Scalar<T>> rho;
+		saw::data<sch::Vector<T,Descriptor::D>> vel;
 		compute_rho_u<T,Descriptor>(dfs_old,rho,vel);
 		auto eq = equilibrium<T,Descriptor>(rho,vel);
 
@@ -131,7 +131,7 @@ public:
 			// saw::data<T> ci_min_u{0};
 			saw::data<T> ci_dot_u{0};
 			for(uint64_t d = 0u; d < Descriptor::D; ++d){
-				ci_dot_u = ci_dot_u + vel.at({d}) * saw::data<T>{static_cast<typename saw::native_data_type<T>::type>(dfi::directions[i][d])};
+				ci_dot_u = ci_dot_u + vel.at({{d}}) * saw::data<T>{static_cast<typename saw::native_data_type<T>::type>(dfi::directions[i][d])};
 			}
 			saw::data<T> F_i{0};// = saw::data<T>{dfi::weights[i]} * (ci_dot_F * dfi::inv_cs2 + ci_dot_u * ci_dot_F * (dfi::inv_cs2 * dfi::inv_cs2));
 
diff --git a/lib/core/c++/hlbm.hpp b/lib/core/c++/hlbm.hpp
index 1c665ce..f8f0118 100644
--- a/lib/core/c++/hlbm.hpp
+++ b/lib/core/c++/hlbm.hpp
@@ -13,11 +13,19 @@ struct HLBM {};
 /**
  * HLBM collision operator for LBM
  */
-template<typename T, typename Descriptor>
+template<typename T, typename Descriptor, typename Encode>
 class component<T, Descriptor, cmpt::HLBM> {
 private:
 public:
 	component() = default;
+
+	template<typename CellFieldSchema, typename MacroFieldSchema>
+	void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
+		
+		bool is_even = ((time_step.get() % 2) == 0);
+
+
+	}
 };
 
 }
diff --git a/lib/core/c++/psm.hpp b/lib/core/c++/psm.hpp
new file mode 100644
index 0000000..8e151c3
--- /dev/null
+++ b/lib/core/c++/psm.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include "macroscopic.hpp"
+#include "component.hpp"
+#include "equilibrium.hpp"
+
+namespace kel {
+namespace lbm {
+namespace cmpt {
+struct PSM {};
+}
+
+/**
+ * HLBM collision operator for LBM
+ */
+template<typename T, typename Descriptor, typename Encode>
+class component<T, Descriptor, cmpt::PSM> {
+private:
+public:
+	component() = default;
+
+	template<typename CellFieldSchema, typename MacroFieldSchema>
+	void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
+		
+		bool is_even = ((time_step.get() % 2) == 0);
+
+		auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
+		auto& porous = field.template get<"porosity">();
+
+				
+	}
+};
+
+}
+}
-- 
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