diff --git a/lib/Ray/CMakeLists.txt b/lib/Ray/CMakeLists.txt
index 5bb12348..02d51ff3 100644
--- a/lib/Ray/CMakeLists.txt
+++ b/lib/Ray/CMakeLists.txt
@@ -105,4 +105,6 @@ if (NOT raylib_FOUND)
 endif()
 
 add_library(${LIB_NAME} STATIC ${SRC} ${HEADERS})
+target_compile_definitions(${LIB_NAME} INTERFACE INTERNAL=private)
+target_compile_definitions(${LIB_NAME} PRIVATE INTERNAL=public)
 target_link_libraries(${LIB_NAME} raylib)
diff --git a/lib/Ray/sources/Audio/IAudio.hpp b/lib/Ray/sources/Audio/IAudio.hpp
index 82dc1606..65753870 100644
--- a/lib/Ray/sources/Audio/IAudio.hpp
+++ b/lib/Ray/sources/Audio/IAudio.hpp
@@ -16,7 +16,7 @@ namespace RAY::Audio
 	//! @brief Interface for Audio ressources
 	class IAudio: public IRessource {
 		public:
-			virtual ~IAudio() = 0;
+			virtual ~IAudio() = default;
 
 			 //! @brief Load Audio stream from file
 			virtual bool load(const std::string &path) = 0;
diff --git a/lib/Ray/sources/Camera/Camera2D.hpp b/lib/Ray/sources/Camera/Camera2D.hpp
index ed82e785..66289ab2 100644
--- a/lib/Ray/sources/Camera/Camera2D.hpp
+++ b/lib/Ray/sources/Camera/Camera2D.hpp
@@ -26,7 +26,7 @@ namespace RAY::Camera {
 			//! @brief A copy constructor
 			Camera2D(const Camera2D &) = default;
 
-			~Camera2D() = default;
+			~Camera2D() override = default;
 
 			//! @brief A Camera is assignable
 			Camera2D &operator=(const Camera2D &) = default;
@@ -52,11 +52,12 @@ namespace RAY::Camera {
 			//! @brief Returns camera 2d transform matrix
 			Matrix getMatrix(void) const override;
 
-			//! @brief get camera struct
-			operator ::Camera2D() const;
-
 		private:
 			::Camera2D _camera;
+
+		INTERNAL:
+			//! @brief get camera struct
+			operator ::Camera2D() const;
 	};
 }
 
diff --git a/lib/Ray/sources/Camera/Camera3D.hpp b/lib/Ray/sources/Camera/Camera3D.hpp
index d5864271..0fcf82cc 100644
--- a/lib/Ray/sources/Camera/Camera3D.hpp
+++ b/lib/Ray/sources/Camera/Camera3D.hpp
@@ -29,7 +29,7 @@ namespace RAY::Camera {
 			//! @brief A copy constructor
 			Camera3D(const Camera3D &) = default;
 
-			~Camera3D() = default;
+			~Camera3D() override = default;
 
 			//! @brief A Camera is assignable
 			Camera3D &operator=(const Camera3D &) = default;
@@ -67,10 +67,13 @@ namespace RAY::Camera {
 
 			//! @brief get camera struct
 			operator ::Camera3D() const;
-
 		private:
 			::Camera3D _camera;
 			Mode _mode;
+		
+		INTERNAL:
+			//! @brief get camera struct
+			operator ::Camera3D() const;
 	};
 }
 
diff --git a/lib/Ray/sources/Color.hpp b/lib/Ray/sources/Color.hpp
index 0ad89a87..9a67d317 100644
--- a/lib/Ray/sources/Color.hpp
+++ b/lib/Ray/sources/Color.hpp
@@ -68,8 +68,6 @@ namespace RAY {
 			//! @return A-component of color
 			unsigned char getA(void) const;
 
-			//! @return color struct
-			operator ::Color() const;
 
 			//! @return hexadecimal value of color
 			int toHex(void) const;
@@ -77,6 +75,10 @@ namespace RAY {
 		private:
 			//! @brief Color, really, that's just it...
 			::Color _color;
+		
+		INTERNAL:
+			//! @return color struct
+			operator ::Color() const;
 	};
 };
 
diff --git a/lib/Ray/sources/Drawables/2D/Text.cpp b/lib/Ray/sources/Drawables/2D/Text.cpp
index 72a5086f..29da6b8f 100644
--- a/lib/Ray/sources/Drawables/2D/Text.cpp
+++ b/lib/Ray/sources/Drawables/2D/Text.cpp
@@ -8,13 +8,13 @@
 #include "Drawables/2D/Text.hpp"
 
 RAY::Drawables::Drawables2D::Text::Text(const std::string &content, int fontSize, const Vector2 &position, const Color &color):
-	ADrawable2D(position, color), _text(content), _size(fontSize), _spacing(DEFAULT_LETTER_SPACING)
+	ADrawable2D(position, color), _text(content), _size(fontSize), _spacing(this->DefaultLetterSpacing)
 {
 	this->_font.recs = nullptr;
 }
 
 RAY::Drawables::Drawables2D::Text::Text(const std::string &content, int fontSize, int x, int y, const Color &color):
-	ADrawable2D(x, y, color), _text(content), _size(fontSize), _spacing(DEFAULT_LETTER_SPACING)
+	ADrawable2D(x, y, color), _text(content), _size(fontSize), _spacing(this->DefaultLetterSpacing)
 {
 	this->_font.recs = nullptr;
 }
diff --git a/lib/Ray/sources/Drawables/2D/Text.hpp b/lib/Ray/sources/Drawables/2D/Text.hpp
index e1fb8ca0..46e0bd37 100644
--- a/lib/Ray/sources/Drawables/2D/Text.hpp
+++ b/lib/Ray/sources/Drawables/2D/Text.hpp
@@ -11,13 +11,12 @@
 #include "Drawables/ADrawable2D.hpp"
 #include <string>
 
-#define DEFAULT_LETTER_SPACING 1
-
 namespace RAY::Drawables::Drawables2D {
 	//! @brief Text in a two-dimensionnal space
 	class Text: public ADrawable2D
 	{
 		public:
+			static constexpr int DefaultLetterSpacing = 1;
 			//! @brief Text constructor
 			//! @param content text
 			//! @param fontSize size of the text
@@ -79,7 +78,8 @@ namespace RAY::Drawables::Drawables2D {
 			int _size;
 
 			//! @brief spacing of chars
-			int _spacing;			
+			int _spacing;
+
 	};
 };
 
diff --git a/lib/Ray/sources/Drawables/Image.hpp b/lib/Ray/sources/Drawables/Image.hpp
index c9f8577d..beeda629 100644
--- a/lib/Ray/sources/Drawables/Image.hpp
+++ b/lib/Ray/sources/Drawables/Image.hpp
@@ -54,9 +54,6 @@ namespace RAY
 			//! @brief unload ressources
 			bool unload() override;
 
-			//! @brief get image
-			operator ::Image() const;
-			operator ::Image *();
 
 			//! @brief draw drawable
 			void draw(Drawables::ADrawable2D &);
@@ -64,6 +61,11 @@ namespace RAY
 		private:
 			//! @brief Image, really, that's just it...
 			::Image _image;
+		
+		INTERNAL:
+			//! @brief get image
+			operator ::Image() const;
+			operator ::Image *();
 	};   
 }
 
diff --git a/lib/Ray/sources/Drawables/Texture.hpp b/lib/Ray/sources/Drawables/Texture.hpp
index bab0c36f..fb4bf0ec 100644
--- a/lib/Ray/sources/Drawables/Texture.hpp
+++ b/lib/Ray/sources/Drawables/Texture.hpp
@@ -45,13 +45,14 @@ namespace RAY
 			//! @brief unload ressources
 			bool unload() override;
 
-			//! @return libray Texture struct
-			operator ::Texture() const;
-
 		protected:
 		private:
 			//! @brief Texture, really, that's just it...
 			::Texture _texture;
+
+		INTERNAL:
+			//! @return libray Texture struct
+			operator ::Texture() const;
 	};   
 }
 
diff --git a/lib/Ray/sources/Vector/Vector2.hpp b/lib/Ray/sources/Vector/Vector2.hpp
index e384b020..9a5e1608 100644
--- a/lib/Ray/sources/Vector/Vector2.hpp
+++ b/lib/Ray/sources/Vector/Vector2.hpp
@@ -12,37 +12,39 @@
 
 namespace RAY {
 	//! @brief A Two-dimensionnal Vector data type.
-	struct Vector2
+	class Vector2
 	{
-		//! @brief Vector 2 constructor
-		//! @param x x-value of vector, such as a width
-		//! @param y y-value of vector, such as a height
-		Vector2(float x, float y);
+		public:
+			//! @brief Vector 2 constructor
+			//! @param x x-value of vector, such as a width
+			//! @param y y-value of vector, such as a height
+			Vector2(float x, float y);
 
-		//! @brief Vector 2 constructor
-		//! @brief All values are set to zero
-		Vector2();
+			//! @brief Vector 2 constructor
+			//! @brief All values are set to zero
+			Vector2();
 
-		//! @brief A default Vector 2 copy-constructor
-		Vector2(const Vector2 &) = default;
+			//! @brief A default Vector 2 copy-constructor
+			Vector2(const Vector2 &) = default;
 
-		//! @brief A Vector 2 constructor from libray's vector2
-		Vector2(const ::Vector2 &);
+			//! @brief A Vector 2 constructor from libray's vector2
+			Vector2(const ::Vector2 &);
 
-		//! @brief A default Vector 2 destructor
-		~Vector2() = default;
+			//! @brief A default Vector 2 destructor
+			~Vector2() = default;
 
-		//! @brief A Vector 2 is assignable
-		Vector2 &operator=(const Vector2 &) = default;
-
-		//! @brief A RAY Vector2 is cast-able in libray's Vector2
-		operator ::Vector2() const;
+			//! @brief A Vector 2 is assignable
+			Vector2 &operator=(const Vector2 &) = default;
 
 		
-		//! @brief X value of vector
-		float x;
-		//! @brief Y value of vector
-		float y;
+			//! @brief X value of vector
+			float x;
+			//! @brief Y value of vector
+			float y;
+
+		INTERNAL:
+			//! @brief A RAY Vector2 is cast-able in libray's Vector2
+			operator ::Vector2() const;
 	};
 }
 
diff --git a/lib/Ray/sources/Vector/Vector3.hpp b/lib/Ray/sources/Vector/Vector3.hpp
index 6b847ebe..b154b8c0 100644
--- a/lib/Ray/sources/Vector/Vector3.hpp
+++ b/lib/Ray/sources/Vector/Vector3.hpp
@@ -12,39 +12,42 @@
 
 namespace RAY {
 	//! @brief A Three-dimensionnal Vector data type.
-	struct Vector3
+	class Vector3
 	{
-		//! @brief Vector 3 constructor
-		//! @param x x-value of vector, such as a width
-		//! @param y y-value of vector, such as a height
-		//! @param z z-value of vector, such as a depth
-		Vector3(float x, float y, float z);
+		public:
+			//! @brief Vector 3 constructor
+			//! @param x x-value of vector, such as a width
+			//! @param y y-value of vector, such as a height
+			//! @param z z-value of vector, such as a depth
+			Vector3(float x, float y, float z);
 		
-		//! @brief Vector 3 constructor
-		//! @brief All values are set to zero
-		Vector3();
+			//! @brief Vector 3 constructor
+			//! @brief All values are set to zero
+			Vector3();
 		
-		//! @brief A default Vector 3 copy-constructor
-		Vector3(const Vector3 &) = default;
+			//! @brief A default Vector 3 copy-constructor
+			Vector3(const Vector3 &) = default;
 
-		//! @brief A Vector 3 constructor from libray's vector3
-		Vector3(const ::Vector3 &);
+			//! @brief A Vector 3 constructor from libray's vector3
+			Vector3(const ::Vector3 &);
 		
-		//! @brief A default Vector 3 destructor
-		~Vector3() = default;
+			//! @brief A default Vector 3 destructor
+			~Vector3() = default;
 		
-		//! @brief A Vector 3 is assignable
-		Vector3 &operator=(const Vector3 &) = default;
+			//! @brief A Vector 3 is assignable
+			Vector3 &operator=(const Vector3 &) = default;
 		
-		//! @brief A RAY Vector3 is cast-able in libray's Vector3
-		operator ::Vector3() const;
 		
-		//! @brief X value of vector
-		float x;
-		//! @brief Y value of vector
-		float y;
-		//! @brief Z value of vector
-		float z;
+			//! @brief X value of vector
+			float x;
+			//! @brief Y value of vector
+			float y;
+			//! @brief Z value of vector
+			float z;
+
+		INTERNAL:
+			//! @brief A RAY Vector3 is cast-able in libray's Vector3
+			operator ::Vector3() const;
 	};
 }
 
diff --git a/lib/Ray/sources/Window.cpp b/lib/Ray/sources/Window.cpp
index 89c776f4..96760078 100644
--- a/lib/Ray/sources/Window.cpp
+++ b/lib/Ray/sources/Window.cpp
@@ -112,12 +112,14 @@ void RAY::Window::setDrawingState(enum RAY::Window::drawingState state)
 
 void RAY::Window::useCamera(RAY::Camera::Camera2D &camera)
 {
+	this->unuseCamera();
 	this->_displayState = RAY::Window::TWO_DIMENSIONNAL;
 	BeginMode2D(camera);
 }
 
 void RAY::Window::useCamera(RAY::Camera::Camera3D &camera)
 {
+	this->unuseCamera();
 	this->_displayState = RAY::Window::THREE_DIMENSIONNAL;
 	BeginMode3D(camera);
 }
diff --git a/sources/main.cpp b/sources/main.cpp
index f2eb5a51..b106f9de 100644
--- a/sources/main.cpp
+++ b/sources/main.cpp
@@ -19,7 +19,6 @@
 
 int main()
 {
-	WAL::Wal wal;
 	
 	// Initialization
 	//--------------------------------------------------------------------------------------