From 15ee0a4a9b398b86001c7a2542e8e98f9dedba70 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Fri, 7 Aug 2026 18:15:25 +0200
Subject: Environment cleanup. Use this in future sim runs

---
 .../sim.cpp                                        | 26 +++++++++++++++------
 modules/core/c++/args.hpp                          | 27 ----------------------
 modules/core/c++/descriptor/d2q5.hpp               |  2 +-
 modules/core/c++/environment.hpp                   |  5 ++--
 4 files changed, 23 insertions(+), 37 deletions(-)
 delete mode 100644 modules/core/c++/args.hpp

diff --git a/examples/moving_poiseulle_particles_2d_fplbm_gpu/sim.cpp b/examples/moving_poiseulle_particles_2d_fplbm_gpu/sim.cpp
index c82f632..328f6e2 100644
--- a/examples/moving_poiseulle_particles_2d_fplbm_gpu/sim.cpp
+++ b/examples/moving_poiseulle_particles_2d_fplbm_gpu/sim.cpp
@@ -256,13 +256,25 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 
 	using dfi = df_info<T,Desc>;
 
-	auto eo_lbm_dir = output_directory();
-	if(eo_lbm_dir.is_error()){
-		return std::move(eo_lbm_dir.get_error());
+	saw::data<sch::LbmArgs> args;
+	{
+		auto& args_n = args.template get<"args">();
+		auto& name = args_n.template get<"name">();
+		name.set("moving_poiseulle_particles_2d_fplbm_gpu");
+	}
+	{
+		auto eov = saw::parse_args(args,argc,argv);
+		if(eov.is_error()){
+			return eov;
+		}
+	}
+	auto eo_lbm_env = init_lbm_env(args);
+	if(eo_lbm_env.is_error()){
+		return std::move(eo_lbm_env.get_error());
 	}
-	auto& lbm_dir = eo_lbm_dir.get_value();
+	const auto& lbm_env = eo_lbm_env.get_value();
 
-	auto out_dir = lbm_dir / "moving_poiseulle_particles_2d_fplbm_imp_gpu";
+	auto& out_dir = lbm_env.name_dir;
 
 	{
 		std::error_code ec;
@@ -424,13 +436,13 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 		}
 	}
 	{
-		auto eov = write_vtk_file(out_dir,"m",time_steps.get(), *lbm_macro_data_ptr);
+		auto eov = write_vtk_file(out_dir,lbm_env.name,time_steps.get(), *lbm_macro_data_ptr);
 		if(eov.is_error()){
 			return eov;
 		}
 	}
 	{
-		auto eov = write_csv_file(out_dir,"m",time_steps.get(), *lbm_macro_data_ptr);
+		auto eov = write_csv_file(out_dir,lbm_env.name,time_steps.get(), *lbm_macro_data_ptr);
 		if(eov.is_error()){
 			return eov;
 		}
diff --git a/modules/core/c++/args.hpp b/modules/core/c++/args.hpp
deleted file mode 100644
index a0aa941..0000000
--- a/modules/core/c++/args.hpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-#include <forstio/codec/data.hpp>
-#include <forstio/codec/args.hpp>
-
-namespace kel {
-namespace lbm {
-namespace sch {
-using namespace saw::schema;
-}
-
-template<typename ArgSchema>
-saw::error_or<saw::data<ArgSchema>> setup_lbm_env(int argc, char** argv){
-	saw::data<ArgSchema,saw::encode::Args> args_data{argc,argv};
-
-	saw::codec<ArgSchema,saw::encode::Args> args_codec;
-
-	saw::data<ArgSchema> args_decoded;
-	auto eov = args_codec.decode(args_data,args_decoded);
-	if(eov.is_error()){
-		return eov;
-	}
-
-	return args_decoded;
-}
-}
-}
diff --git a/modules/core/c++/descriptor/d2q5.hpp b/modules/core/c++/descriptor/d2q5.hpp
index 74f8b96..fef9c40 100644
--- a/modules/core/c++/descriptor/d2q5.hpp
+++ b/modules/core/c++/descriptor/d2q5.hpp
@@ -5,7 +5,7 @@
 namespace kel {
 namespace lbm {
 namespace sch {
-using D2Q9 = Descriptor<2u,5u>;
+using D2Q5 = Descriptor<2u,5u>;
 }
 
 template<typename T>
diff --git a/modules/core/c++/environment.hpp b/modules/core/c++/environment.hpp
index ed9cd40..51092d5 100644
--- a/modules/core/c++/environment.hpp
+++ b/modules/core/c++/environment.hpp
@@ -22,7 +22,7 @@ saw::error_or<environment> init_lbm_env(const saw::data<ArgSch>& args){
 	namespace fs = std::filesystem;
 
 	auto& args_n = args.template get<"args">();
-	auto& name = args_n.template get<"name">();
+	auto& arg_name = args_n.template get<"name">();
 
 	const char* home_dir = std::getenv("HOME");
 	if(not home_dir){
@@ -50,7 +50,8 @@ saw::error_or<environment> init_lbm_env(const saw::data<ArgSch>& args){
 	}
 
 	{
-		env.name_dir = env.data_dir / name.view();
+		env.name = arg_name.stl_view();
+		env.name_dir = env.data_dir / arg_name.stl_view();
 	}
 
 	return env;
-- 
cgit v1.2.3