diff --git a/src/KeyStateManager.cpp b/src/KeyStateManager.cpp
index 788ab67..9bf68e9 100644
--- a/src/KeyStateManager.cpp
+++ b/src/KeyStateManager.cpp
@@ -5,8 +5,15 @@
 #include "KeyStateManager.h"
 #include <iostream>
 
+// Initialize static members
+
 std::map<unsigned char,bool> KeyStateManager::ascii_keys_status = {};
 std::map<int,bool> KeyStateManager::special_keys_status = {};
+std::map<int,bool> KeyStateManager::mouse_button_status = {};
+
+Vec2i KeyStateManager::current_mouse_delta;
+Vec2i KeyStateManager::last_mouse_delta;
+Vec2i KeyStateManager::last_mouse_position;
 
 void KeyStateManager::register_glut_callbacks()
 {
@@ -14,8 +21,16 @@ void KeyStateManager::register_glut_callbacks()
     glutKeyboardUpFunc(KeyStateManager::key_up);
     glutSpecialFunc(KeyStateManager::special_key_press);
     glutSpecialUpFunc(KeyStateManager::special_key_up);
+
+    glutMouseFunc(KeyStateManager::mouse_click);
+    glutPassiveMotionFunc(KeyStateManager::mouse_movement);
+    glutMotionFunc(KeyStateManager::mouse_movement);
 }
 
+// ==================
+//      Keyboard
+// ==================
+
 bool KeyStateManager::is_key_pressed(unsigned char key)
 {
     if (ascii_keys_status.find(key) == ascii_keys_status.end())
@@ -37,21 +52,25 @@ bool KeyStateManager::is_special_key_pressed(int key)
 void KeyStateManager::key_press(unsigned char event_key, int mouse_x, int mouse_y)
 {
     update_key(event_key,true);
+    mouse_movement(mouse_x,mouse_y);
 }
 
 void KeyStateManager::key_up(unsigned char event_key, int mouse_x, int mouse_y)
 {
     update_key(event_key,false);
+    mouse_movement(mouse_x,mouse_y);
 }
 
 void KeyStateManager::special_key_press(int event_key, int mouse_x, int mouse_y)
 {
     update_special_key(event_key,true);
+    mouse_movement(mouse_x,mouse_y);
 }
 
 void KeyStateManager::special_key_up(int event_key, int mouse_x, int mouse_y)
 {
     update_special_key(event_key,false);
+    mouse_movement(mouse_x,mouse_y);
 }
 
 void KeyStateManager::update_key(unsigned char event_key, bool new_status)
@@ -77,3 +96,58 @@ void KeyStateManager::update_special_key(int event_key, bool new_status)
         special_keys_status.insert({event_key,new_status});
     }
 }
+
+// ==================
+//        Mouse
+// ==================
+
+void KeyStateManager::mouse_movement(int mouse_x, int mouse_y)
+{
+    Vec2i current_frame;
+    current_frame.x = mouse_x;
+    current_frame.y = mouse_y;
+
+    Vec2i frame_delta = current_frame - last_mouse_position;
+    current_mouse_delta.x += frame_delta.x;
+    current_mouse_delta.y += frame_delta.y;
+
+    last_mouse_position = current_frame;
+
+    std::cout << frame_delta.x << "," << frame_delta.y << std::endl;
+}
+
+void KeyStateManager::mouse_click(int mouse_button, int button_state, int mouse_x, int mouse_y)
+{
+    bool new_status = button_state == GLUT_DOWN;
+
+    if (mouse_button_status.find(mouse_button) != mouse_button_status.end())
+    {
+        mouse_button_status.at(mouse_button) = new_status;
+    }
+    else
+    {
+        mouse_button_status.insert({mouse_button,new_status});
+    }
+    mouse_movement(mouse_x,mouse_y);
+}
+
+bool KeyStateManager::is_mouse_button_pressed(int mouse_button)
+{
+
+    if (mouse_button_status.find(mouse_button) == mouse_button_status.end())
+    {
+        return false;
+    }
+    return mouse_button_status.at(mouse_button);
+}
+
+const Vec2i& KeyStateManager::get_mouse_delta(bool update)
+{
+    if (update)
+    {
+        last_mouse_delta = current_mouse_delta;
+        current_mouse_delta.x = 0;
+        current_mouse_delta.y = 0;
+    }
+    return last_mouse_delta;
+}
\ No newline at end of file
diff --git a/src/KeyStateManager.h b/src/KeyStateManager.h
index cb0693a..f7aedbd 100644
--- a/src/KeyStateManager.h
+++ b/src/KeyStateManager.h
@@ -8,8 +8,10 @@
 #include <map>
 #include <GL/glut.h>
 
+#include "types.h"
 
-/// Handles the key events from glut and keep the status of keys up to date.
+
+/// Handles the key and mouse events from glut and keep their status up to date.
 /// "Static class"
 class KeyStateManager {
 public:
@@ -21,16 +23,34 @@ public:
     static bool is_key_pressed(unsigned char key);
     static bool is_special_key_pressed(int key);
 
+    static bool is_mouse_button_pressed(int mouse_button);
+
+    /// Updates and returns the movement of the mouse.
+    /// \param update If true, updates the mouse delta that will be returned
+    /// \return Updated displacement on each axis between the two last updates.
+    static const Vec2i& get_mouse_delta(bool update = false);
+
     // Glut callbacks for input events
     static void key_press(unsigned char event_key, int mouse_x, int mouse_y);
     static void key_up(unsigned char event_key, int mouse_x, int mouse_y);
     static void special_key_press(int event_key, int mouse_x, int mouse_y);
     static void special_key_up(int event_key, int mouse_x, int mouse_y);
 
+    static void mouse_click(int mouse_button, int button_state, int mouse_x, int mouse_y);
+    /// Accumulates the movements of the mouse
+    static void mouse_movement(int mouse_x, int mouse_y);
+
 private:
     // The maps are used to keep track of the keys which were pressed or released during runtime.
     static std::map<unsigned char,bool> ascii_keys_status;
     static std::map<int,bool> special_keys_status;
+    static std::map<int,bool> mouse_button_status;
+
+    // Updated by callback
+    static Vec2i current_mouse_delta;
+    // Updated on user request
+    static Vec2i last_mouse_delta;
+    static Vec2i last_mouse_position;
 
     // These functions are called by *_press and *_up to update their values
     static void update_key(unsigned char event_key, bool new_status);
diff --git a/src/main.cpp b/src/main.cpp
index 8efa7a8..3195bc4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -13,7 +13,11 @@ static Texture raptor_texture;
 
 void manage_inputs()
 {
-    if (KeyStateManager::is_key_pressed(' '))
+    if (KeyStateManager::is_mouse_button_pressed(GLUT_LEFT_BUTTON))
+    {
+        glClearColor(0,0,0.5,1);
+    }
+    else if (KeyStateManager::is_key_pressed(' '))
     {
         glClearColor(0.5,0,0,1);
     }
@@ -46,7 +50,7 @@ void display()
 
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
-    gluLookAt(7.5, 7.5, 7.5,
+    gluLookAt(10, 7.5, 10,
               0, 0, 1,
               0, 1, 0);
 
diff --git a/src/types.h b/src/types.h
index 6c3349e..a47d514 100644
--- a/src/types.h
+++ b/src/types.h
@@ -15,6 +15,48 @@ struct CoordinatesVector
 {
     T coordinates[N];
 
+    // Use SFINAE to declare the function if and only if the type is arithmetic
+    template <typename Scalar>
+    typename std::enable_if<std::is_arithmetic<Scalar>::value,CoordinatesVector<T,N>>::type
+    operator*(const Scalar& scalar)
+    {
+        CoordinatesVector result;
+        for (unsigned int i = 0;i<N;i++)
+        {
+            result.coordinates[i] = coordinates[i] * scalar;
+        }
+    }
+
+    CoordinatesVector operator+(const CoordinatesVector<T,N>& op)
+    {
+        CoordinatesVector result;
+        for (unsigned int i = 0;i<N;i++)
+        {
+            result.coordinates[i] = coordinates[i] + op.coordinates[i];
+        }
+        return result;
+    }
+
+    CoordinatesVector operator-(const CoordinatesVector<T,N>& op)
+    {
+        CoordinatesVector result;
+        for (unsigned int i = 0;i<N;i++)
+        {
+            result.coordinates[i] = coordinates[i] - op.coordinates[i];
+        }
+
+        return result;
+    }
+
+    CoordinatesVector& operator=(const CoordinatesVector<T,N>& original)
+    {
+        if (this != &original)
+        {
+            std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(coordinates));
+        }
+        return *this;
+    }
+
     friend std::fstream& operator>>(std::fstream& stream, CoordinatesVector<T,N>& vector)
     {
         for (unsigned int i = 0;i<N;i++)
@@ -27,42 +69,68 @@ struct CoordinatesVector
 
 
 template <typename T>
-struct CoordinatesVector<T,2>
+struct Vec2 : public CoordinatesVector<T,2>
 {
-    T coordinates[2];
-    T& x = coordinates[0];
-    T& y = coordinates[1];
+    T& x = CoordinatesVector<T,2>::coordinates[0];
+    T& y = CoordinatesVector<T,2>::coordinates[1];
 
-    friend std::fstream& operator>>(std::fstream& stream, CoordinatesVector<T,2>& vec2)
+    Vec2() = default;
+
+    // Cast-copy constructor in order to use the operators of the mother class.
+    Vec2(const CoordinatesVector<T,2>& origin)
     {
-        stream >> vec2.x >> vec2.y;
-        return stream;
+        if (this != &origin)
+        {
+            std::copy(std::begin(origin.coordinates),std::end(origin.coordinates),std::begin(CoordinatesVector<T,2>::coordinates));
+        }
+    }
+
+    Vec2& operator=(const Vec2<T>& origin)
+    {
+        if (this != &origin)
+        {
+            std::copy(std::begin(origin.coordinates), std::end(origin.coordinates), std::begin(CoordinatesVector<T,2>::coordinates));
+        }
+        return *this;
     }
 };
 
 template <typename T>
-struct CoordinatesVector<T,3>
+struct Vec3 : CoordinatesVector<T,3>
 {
-    T coordinates[3];
 
-    T& x = coordinates[0];
-    T& y = coordinates[1];
-    T& z = coordinates[2];
+    T& x = CoordinatesVector<T,3>::coordinates[0];
+    T& y = CoordinatesVector<T,3>::coordinates[1];
+    T& z = CoordinatesVector<T,3>::coordinates[2];
 
-    friend std::fstream& operator>>(std::fstream& stream, CoordinatesVector<T,3>& vec3)
+    Vec3() = default;
+
+    // Cast-copy constructor in order to use the operators of the mother class.
+    Vec3(const CoordinatesVector<T,3>& origin)
     {
-        stream >> vec3.x >> vec3.y >> vec3.z;
-        return stream;
+        if (this != &origin)
+        {
+            std::copy(std::begin(origin.coordinates),std::end(origin.coordinates),std::begin(CoordinatesVector<T,2>::coordinates));
+        }
+    }
+
+    Vec3& operator=(const Vec3<T>& original)
+    {
+        if (this != &original)
+        {
+            std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,3>::coordinates));
+        }
+        return *this;
     }
 };
 
 
 // Define aliases for common types
-typedef CoordinatesVector<int,2> Vec2i;
-typedef CoordinatesVector<float,2> Vec2f;
+typedef Vec2<int> Vec2i;
+typedef Vec2<float> Vec2f;
 
-typedef CoordinatesVector<int,3> Vec3i;
-typedef CoordinatesVector<float,3> Vec3f;
+typedef Vec3<int> Vec3i;
+typedef Vec3<float> Vec3f;
 
 
 #endif //TESTS_OPENGL_TYPES_H