diff --git a/19_sdl_sprite.txt b/19_sdl_sprite.txt
index 230e404..798b544 100644
--- a/19_sdl_sprite.txt
+++ b/19_sdl_sprite.txt
@@ -1,307 +1,312 @@
 
-
-class Sprite 
-public:
-	Rect2 get_texture_clip_rect() const;
-	void set_texture_clip_rect(const Rect2 &rect);
-
-	Rect2 get_transform() const;
-	void set_transform(const Rect2 &rect);
-
-	float get_x() const;
-	void set_x(const float val);
-
-	float get_y() const;
-	void set_y(const float val);
-
-	float get_w() const;
-	void set_w(const float val);
-
-	float get_h() const;
-	void set_h(const float val);
-
-	double get_angle() const;
-	void set_angle(const double val);
-
-	float get_anchor_x() const;
-	void set_anchor_x(const float val);
-
-	float get_anchor_y() const;
-	void set_anchor_y(const float val);
-
-	void set_anchor(const float x, const float y);
-
-	SDL_RendererFlip get_flip() const;
-	void set_flip(const SDL_RendererFlip val);
-
-	Color get_color_mod() const;
-	void set_color_mod(const Color &color);
-
-	Texture *get_texture();
-	Texture *get_texture() const;
-	void set_texture(Texture *texture);
-
-	void draw();
-
-	Sprite();
-	Sprite(Texture *texture);
-	Sprite(Texture *texture, const Color &color_mod);
-	Sprite(Texture *texture, const float x, const float y, const double angle = 0);
-	Sprite(Texture *texture, const float x, const float y, const Rect2 &texture_clip_rect, const double angle = 0);
-	Sprite(Texture *texture, const Rect2 &transform, const Rect2 &texture_clip_rect, const double angle = 0);
-	Sprite(Texture *texture, const float x, const float y, const float w, const float h, const double angle = 0);
-	virtual ~Sprite();
-
-private:
-	Rect2 _texture_clip_rect;
-	Rect2 _transform;
-	double _angle;
-
-	float _anchor_x;
-	float _anchor_y;
-
-	SDL_RendererFlip _flip;
-
-	Color _color_mod;
-
-	Texture *_texture;
-
+|---------------------------------------------------------------------------------------|
+| class Sprite                                                                          |
+|---------------------------------------------------------------------------------------|
+| + Rect2 get_texture_clip_rect() const                                                 |
+| + void set_texture_clip_rect(const Rect2 &rect)                                       |
+|                                                                                       |
+| + Rect2 get_transform() const                                                         |
+| + void set_transform(const Rect2 &rect)                                               |
+|                                                                                       |
+| + float get_x() const                                                                 |
+| + void set_x(const float val)                                                         |
+|                                                                                       |
+| + float get_y() const                                                                 |
+| + void set_y(const float val)                                                         |
+|                                                                                       |
+| + float get_w() const                                                                 |
+| + void set_w(const float val)                                                         |
+|                                                                                       |
+| + float get_h() const                                                                 |
+| + void set_h(const float val)                                                         |
+|                                                                                       |
+| + double get_angle() const                                                            |
+| + void set_angle(const double val)                                                    |
+|                                                                                       |
+| + float get_anchor_x() const                                                          |
+| + void set_anchor_x(const float val)                                                  |
+|                                                                                       |
+| + float get_anchor_y() const                                                          |
+| + void set_anchor_y(const float val)                                                  |
+|                                                                                       |
+| + void set_anchor(const float x, const float y)                                       |
+|                                                                                       |
+| + SDL_RendererFlip get_flip() const                                                   |
+| + void set_flip(const SDL_RendererFlip val)                                           |
+|                                                                                       |
+| + Color get_color_mod() const                                                         |
+| + void set_color_mod(const Color &color)                                              |
+|                                                                                       |
+| + Texture *get_texture()                                                              |
+| + Texture *get_texture() const                                                        |
+| + void set_texture(Texture *texture)                                                  |
+|                                                                                       |
+| + void draw()                                                                         |
+|                                                                                       |
+| + Sprite()                                                                            |
+| + Sprite(Texture *texture)                                                            |
+| + Sprite(Texture *texture, const Color &color_mod)                                    |
+| + Sprite(Texture *texture, const float x, const float y, const double angle = 0)      |
+|                                                                                       |
+| + Sprite(Texture *texture, const float x, const float y,                              |
+|           const Rect2 &texture_clip_rect, const double angle = 0)                     |
+|                                                                                       |
+| + Sprite(Texture *texture, const Rect2 &transform,                                    |
+|           const Rect2 &texture_clip_rect, const double angle = 0)                     |
+|                                                                                       |
+| + Sprite(Texture *texture, const float x, const float y,                              |
+|           const float w, const float h, const double angle = 0)                       |
+| + virtual ~Sprite()                                                                   |
+|                                                                                       |
+| - Rect2 _texture_clip_rect                                                            |
+| - Rect2 _transform                                                                    |
+| - double _angle                                                                       |
+|                                                                                       |
+| - float _anchor_x                                                                     |
+| - float _anchor_y                                                                     |
+|                                                                                       |
+| - SDL_RendererFlip _flip                                                              |
+|                                                                                       |
+| - Color _color_mod                                                                    |
+|                                                                                       |
+| - Texture *_texture                                                                   |
+|---------------------------------------------------------------------------------------|
 
 #include "sprite.h"
 
 #include "renderer.h"
 
 Rect2 Sprite::get_texture_clip_rect() const {
-	return _texture_clip_rect;
+	return _texture_clip_rect 
 }
 void Sprite::set_texture_clip_rect(const Rect2 &rect) {
-	_texture_clip_rect = rect;
+	_texture_clip_rect = rect 
 }
 
 Rect2 Sprite::get_transform() const {
-	return _transform;
+	return _transform 
 }
 void Sprite::set_transform(const Rect2 &rect) {
-	_transform = rect;
+	_transform = rect 
 }
 
 float Sprite::get_x() const {
-	return _transform.x;
+	return _transform.x 
 }
 void Sprite::set_x(const float val) {
-	_transform.x = val;
+	_transform.x = val 
 }
 
 float Sprite::get_y() const {
-	return _transform.y;
+	return _transform.y 
 }
 void Sprite::set_y(const float val) {
-	_transform.y = val;
+	_transform.y = val 
 }
 
 float Sprite::get_w() const {
-	return _transform.w;
+	return _transform.w 
 }
 void Sprite::set_w(const float val) {
-	_transform.w = val;
+	_transform.w = val 
 }
 
 float Sprite::get_h() const {
-	return _transform.h;
+	return _transform.h 
 }
 void Sprite::set_h(const float val) {
-	_transform.h = val;
+	_transform.h = val 
 }
 
 double Sprite::get_angle() const {
-	return _angle;
+	return _angle 
 }
 void Sprite::set_angle(const double val) {
-	_angle = val;
+	_angle = val 
 }
 
 float Sprite::get_anchor_x() const {
-	return _anchor_x;
+	return _anchor_x 
 }
 void Sprite::set_anchor_x(const float val) {
-	_anchor_x = val;
+	_anchor_x = val 
 }
 
 float Sprite::get_anchor_y() const {
-	return _anchor_y;
+	return _anchor_y 
 }
 void Sprite::set_anchor_y(const float val) {
-	_anchor_y = val;
+	_anchor_y = val 
 }
 
 void Sprite::set_anchor(const float x, const float y) {
-	_anchor_x = x;
-	_anchor_y = y;
+	_anchor_x = x 
+	_anchor_y = y 
 }
 
 SDL_RendererFlip Sprite::get_flip() const {
-	return _flip;
+	return _flip 
 }
 void Sprite::set_flip(const SDL_RendererFlip val) {
-	_flip = val;
+	_flip = val 
 }
 
 Color Sprite::get_color_mod() const {
-	return _color_mod;
+	return _color_mod 
 }
 void Sprite::set_color_mod(const Color &color) {
-	_color_mod = color;
+	_color_mod = color 
 }
 
 Texture *Sprite::get_texture() {
-	return _texture;
+	return _texture 
 }
 Texture *Sprite::get_texture() const {
-	return _texture;
+	return _texture 
 }
 void Sprite::set_texture(Texture *texture) {
-	_texture = texture;
+	_texture = texture 
 }
 
 void Sprite::draw() {
-	Renderer::get_singleton()->draw_sprite(this);
+	Renderer::get_singleton()->draw_sprite(this) 
 }
 
 Sprite::Sprite() {
-	_angle = 0;
+	_angle = 0 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = nullptr;
+	_texture = nullptr 
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 Sprite::Sprite(Texture *texture) {
-	_angle = 0;
+	_angle = 0 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
 	if (_texture != nullptr) {
-		_texture_clip_rect.w = texture->get_width();
-		_texture_clip_rect.h = texture->get_height();
+		_texture_clip_rect.w = texture->get_width() 
+		_texture_clip_rect.h = texture->get_height() 
 
-		_transform.w = texture->get_width();
-		_transform.h = texture->get_height();
+		_transform.w = texture->get_width() 
+		_transform.h = texture->get_height() 
 	}
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 
 Sprite::Sprite(Texture *texture, const Color &color_mod) {
-		_angle = 0;
+		_angle = 0 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
 	if (_texture != nullptr) {
-		_texture_clip_rect.w = texture->get_width();
-		_texture_clip_rect.h = texture->get_height();
+		_texture_clip_rect.w = texture->get_width() 
+		_texture_clip_rect.h = texture->get_height() 
 
-		_transform.w = texture->get_width();
-		_transform.h = texture->get_height();
+		_transform.w = texture->get_width() 
+		_transform.h = texture->get_height() 
 	}
 
-	_color_mod = color_mod;
+	_color_mod = color_mod 
 }
 
 Sprite::Sprite(Texture *texture, const float x, const float y, const double angle) {
-	_angle = angle;
+	_angle = angle 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
-	_transform.x = x;
-	_transform.y = y;
+	_transform.x = x 
+	_transform.y = y 
 
 	if (_texture != nullptr) {
-		_texture_clip_rect.w = texture->get_width();
-		_texture_clip_rect.h = texture->get_height();
+		_texture_clip_rect.w = texture->get_width() 
+		_texture_clip_rect.h = texture->get_height() 
 
-		_transform.w = texture->get_width();
-		_transform.h = texture->get_height();
+		_transform.w = texture->get_width() 
+		_transform.h = texture->get_height() 
 	}
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 Sprite::Sprite(Texture *texture, const float x, const float y, const Rect2 &texture_clip_rect, const double angle) {
-	_angle = angle;
+	_angle = angle 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
-	_transform.x = x;
-	_transform.y = y;
+	_transform.x = x 
+	_transform.y = y 
 
 	if (_texture != nullptr) {
-		_transform.w = texture->get_width();
-		_transform.h = texture->get_height();
+		_transform.w = texture->get_width() 
+		_transform.h = texture->get_height() 
 	}
 
-	_texture_clip_rect = texture_clip_rect;
+	_texture_clip_rect = texture_clip_rect 
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 Sprite::Sprite(Texture *texture, const Rect2 &transform, const Rect2 &texture_clip_rect, const double angle) {
-	_angle = angle;
+	_angle = angle 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
-	_transform = transform;
-	_texture_clip_rect = texture_clip_rect;
+	_transform = transform 
+	_texture_clip_rect = texture_clip_rect 
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 Sprite::Sprite(Texture *texture, const float x, const float y, const float w, const float h, const double angle) {
-	_angle = angle;
+	_angle = angle 
 
-	_anchor_x = 0;
-	_anchor_y = 0;
+	_anchor_x = 0 
+	_anchor_y = 0 
 
-	_flip = SDL_FLIP_NONE;
+	_flip = SDL_FLIP_NONE 
 
-	_texture = texture;
+	_texture = texture 
 
-	_transform.x = x;
-	_transform.y = y;
-	_transform.w = w;
-	_transform.h = h;
+	_transform.x = x 
+	_transform.y = y 
+	_transform.w = w 
+	_transform.h = h 
 
 	if (_texture != nullptr) {
-		_texture_clip_rect.w = texture->get_width();
-		_texture_clip_rect.h = texture->get_height();
+		_texture_clip_rect.w = texture->get_width() 
+		_texture_clip_rect.h = texture->get_height() 
 	}
 
-	_color_mod = Color(255, 255, 255, 255);
+	_color_mod = Color(255, 255, 255, 255) 
 }
 Sprite::~Sprite() {
 }