diff --git a/.gitignore b/.gitignore
index edc45cb..bdff2ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,4 +20,4 @@ temp/
 logs/
 log/
 *.log
-mono/
+./mono/
diff --git a/.vscode/launch.json b/.vscode/launch.json
index 42c5cc2..0c287a0 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -11,6 +11,7 @@
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}/bin",
             "externalConsole": false,
+            "internalConsoleOptions": "neverOpen",
             "MIMode": "gdb",
             "miDebuggerPath": "gdb",
             "setupCommands": [
diff --git a/src/GUI/MainWindow.cpp b/src/GUI/MainWindow.cpp
index 40d342c..6237bd0 100644
--- a/src/GUI/MainWindow.cpp
+++ b/src/GUI/MainWindow.cpp
@@ -2,7 +2,7 @@
 #include <backends/imgui_impl_sdlrenderer2.h>
 #include <iostream>
 #include "MainWindow.hpp"
-#include "../exceptions.hpp"
+#include "exceptions.hpp"
 #include "../format.hpp"
 #include "../Resources/fonts.hpp"
 #include "../Resources/textures.hpp"
diff --git a/src/exceptions.cpp b/src/GUI/exceptions.cpp
similarity index 100%
rename from src/exceptions.cpp
rename to src/GUI/exceptions.cpp
diff --git a/src/exceptions.hpp b/src/GUI/exceptions.hpp
similarity index 93%
rename from src/exceptions.hpp
rename to src/GUI/exceptions.hpp
index 79d68ce..ef86f66 100644
--- a/src/exceptions.hpp
+++ b/src/GUI/exceptions.hpp
@@ -1,6 +1,6 @@
 #pragma once
 
-#include "UsefulException.hpp"
+#include "../UsefulException.hpp"
 
 namespace ougge {
 
diff --git a/src/Mono/Mono.cpp b/src/Mono/Mono.cpp
new file mode 100644
index 0000000..3fe21f2
--- /dev/null
+++ b/src/Mono/Mono.cpp
@@ -0,0 +1,80 @@
+#include "Mono.hpp"
+#include "../UsefulException.hpp"
+#include "../format.hpp"
+#include <mono/jit/jit.h>
+#include <mono/metadata/mono-config.h>
+#include <mono/metadata/debug-helpers.h>
+#include <iostream>
+
+namespace Mono {
+
+RuntimeJIT::RuntimeJIT(const std::string& domain_name){
+    mono_set_dirs("mono-libs", "mono-libs");
+    mono_set_assemblies_path("mono-libs");
+    mono_config_parse("mono-libs/config.xml");
+
+    domain = mono_jit_init(domain_name.c_str());
+    if(!domain)
+        throw UsefulException("can't initialize mono domain");
+}
+
+RuntimeJIT::~RuntimeJIT(){
+    mono_jit_cleanup(domain);
+}
+
+std::shared_ptr<Assembly> RuntimeJIT::loadAssembly(const std::string &name){
+    MonoAssembly* ptr = mono_domain_assembly_open(domain, "app.exe");
+    if(!ptr)
+        throw UsefulException(format("can't load assembly '%s'", name.c_str()));
+    return std::make_shared<Assembly>(ptr);
+}
+
+Assembly::Assembly(MonoAssembly *ptr)
+    : ptr(ptr), image(mono_assembly_get_image(ptr))
+{
+}
+
+Assembly::~Assembly(){
+    // Tt causes SEGFAULT.
+    // Is it even possible to unload assembly from domain?
+    // mono_assembly_close(ptr);
+}
+
+std::shared_ptr<Class> Assembly::getClass(const std::string &name_space, const std::string &name){
+    MonoClass* ptr = mono_class_from_name(image, name_space.c_str(), name.c_str());
+    if(!ptr)
+        throw UsefulException(format("can't find class '%s.%s'", name_space.c_str(), name.c_str()));
+    return std::make_shared<Class>(ptr);
+}
+
+Class::Class(MonoClass *ptr)
+    : ptr(ptr)
+{
+    void* iter = nullptr;
+    MonoMethod* m = nullptr;
+    while( (m = mono_class_get_methods(ptr, &iter)) ){
+        auto name = std::string_view(mono_method_get_name(m));
+        methods.emplace(std::piecewise_construct,
+            std::forward_as_tuple(name),
+            std::forward_as_tuple(name, m));
+    }
+}
+
+template<typename ReturnT, typename... ArgTypes>
+std::shared_ptr<std::function<ReturnT(ArgTypes...)>> getMethod(const std::string& name){
+    
+    return std::make_shared<std::function<ReturnT(ArgTypes...)>>();
+}
+
+Method::Method(const std::string_view &name, MonoMethod *ptr)
+    : ptr(ptr), signature(mono_method_signature(ptr)), name(name)
+{
+    void* iter = nullptr;
+    MonoType* rt = mono_signature_get_return_type(signature);
+    MonoType* pt = nullptr;
+    while( (pt = mono_signature_get_params(signature, &iter)) ){
+        std::cout<<"name: "<<mono_type_get_name(pt)<<std::endl;
+    }
+}
+
+} // namespace Mono
diff --git a/src/Mono/Mono.hpp b/src/Mono/Mono.hpp
new file mode 100644
index 0000000..809d6b1
--- /dev/null
+++ b/src/Mono/Mono.hpp
@@ -0,0 +1,72 @@
+#pragma once
+#include "../std.hpp"
+#include <memory>
+#include <string>
+#include <functional>
+#include <vector>
+#include <map>
+#include <mono/metadata/metadata.h>
+#include <mono/metadata/assembly.h>
+#include <mono/metadata/object.h>
+
+namespace Mono {
+
+typedef i8 SByte;
+typedef u8 Byte;
+typedef i16 Short;
+typedef u16 UShort;
+typedef i32 Int;
+typedef i32 UInt;
+typedef i64 Long;
+typedef i64 ULong;
+typedef f32 Float;
+typedef f64 Double;
+typedef MonoString* String;
+
+class Method {
+    MonoMethod* ptr;
+    MonoMethodSignature* signature;
+
+public:
+    const std::string_view name;
+    Method(const std::string_view& name, MonoMethod* ptr);
+};
+
+class Class {
+    std::multimap<std::string_view, Method> methods;
+    MonoClass* ptr;
+
+public:
+    Class(MonoClass* ptr);
+    Class(const Class&) = delete;
+    
+    template<typename ReturnT, typename... ArgTypes>
+    std::shared_ptr<std::function<ReturnT(ArgTypes...)>> getMethod(const std::string& name);
+};
+
+class Assembly {
+    MonoAssembly* ptr;
+    MonoImage* image;
+
+public:
+    Assembly(MonoAssembly* ptr);
+    Assembly(const Assembly&) = delete;
+    ~Assembly();
+    
+    std::shared_ptr<Class> getClass(const std::string& name_space, const std::string& name);
+};
+
+///LINUX: `config.xml`, `mscorelib.dll`, `libmono-native.so` in `mono-libs` directory
+///
+///WINDOWS: `config.xml`, `mscorelib.dll` in `mono-libs` directory
+class RuntimeJIT {
+    MonoDomain* domain;
+public:
+    RuntimeJIT(const std::string& domain_name = "MonoApp");
+    RuntimeJIT(const RuntimeJIT&) = delete;
+    ~RuntimeJIT();
+    
+    std::shared_ptr<Assembly> loadAssembly(const std::string& name);
+};
+
+}
diff --git a/src/Resources/Resources.cpp b/src/Resources/Resources.cpp
index d49dcd3..5dd3c15 100644
--- a/src/Resources/Resources.cpp
+++ b/src/Resources/Resources.cpp
@@ -1,6 +1,6 @@
 #include <fstream>
 #include <sstream>
-#include "../exceptions.hpp"
+#include "../UsefulException.hpp"
 #include "../format.hpp"
 #include "Resources.hpp"
 #include "embedded_resources.h"
diff --git a/src/Resources/textures.cpp b/src/Resources/textures.cpp
index 321c125..1174fa3 100644
--- a/src/Resources/textures.cpp
+++ b/src/Resources/textures.cpp
@@ -1,6 +1,6 @@
 #include "textures.hpp"
 #include <SDL_image.h>
-#include "../exceptions.hpp"
+#include "../GUI/exceptions.hpp"
 
 namespace ougge::Resources {
 
diff --git a/src/main.cpp b/src/main.cpp
index 449740b..d4be044 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,10 +4,8 @@
 #include "Resources/Resources.hpp"
 #include "Game/Scene.hpp"
 #include "format.hpp"
-#include "exceptions.hpp"
-#include <mono/jit/jit.h>
-#include <mono/metadata/assembly.h>
-#include <mono/metadata/mono-config.h>
+#include "UsefulException.hpp"
+#include "Mono/Mono.hpp"
 
 using namespace ougge;
 
@@ -18,29 +16,16 @@ void update(f64 deltaTime){
 int main(int argc, const char** argv){
     try {
         Resources::init();
-        mono_set_dirs("mono-libs", "mono-libs");
-        mono_set_assemblies_path("mono-libs");
-        mono_config_parse("mono-libs/config.xml");
-        std::cout<<"mono_root_dir: "<<mono_assembly_getrootdir()<<std::endl;
-        std::cout<<"mono_config_dir: "<<mono_get_config_dir()<<std::endl;
-        MonoDomain* domain = mono_jit_init("myapp");
-        if(!domain)
-            throw UsefulException("can't initialize mono domain");
-        std::cout<<"jit domain initialized"<<std::endl;
-        MonoAssembly* assembly = mono_domain_assembly_open(domain, "app.exe");
-        if(!assembly)
-            throw UsefulException("can't load assembly");
-        char* mono_argv[] = { "app.exe" };
-        int mono_argc = 1;
-        int retval = mono_jit_exec(domain, assembly, mono_argc, mono_argv);
-        if(retval)
-            throw new UsefulException(format("managed assembly returned error code: %i", retval));
-        mono_jit_cleanup(domain);
-        return 0;
-
+        std::cout<<"initialized resource loader"<<std::endl;
+        Mono::RuntimeJIT mono;
+        auto a = mono.loadAssembly("app.exe");
+        auto c = a->getClass("", "A");
+        std::cout<<"initialized mono jit runtime"<<std::endl;
         GUI::MainWindow w;
         w.open("ougge", update);
+        std::cout<<"created sdl window"<<std::endl;
         w.startUpdateLoop();
+        std::cout<<"sdl window has been cosed"<<std::endl;
     }
     catch(const std::exception& e){
         std::cerr<<"Catched exception: "<<e.what()<<std::endl;