diff --git a/src/2.lighting/1.colors/1.lamp.fs b/src/2.lighting/1.colors/1.light_cube.fs
similarity index 100%
rename from src/2.lighting/1.colors/1.lamp.fs
rename to src/2.lighting/1.colors/1.light_cube.fs
diff --git a/src/2.lighting/1.colors/1.lamp.vs b/src/2.lighting/1.colors/1.light_cube.vs
similarity index 100%
rename from src/2.lighting/1.colors/1.lamp.vs
rename to src/2.lighting/1.colors/1.light_cube.vs
diff --git a/src/2.lighting/1.colors/colors.cpp b/src/2.lighting/1.colors/colors.cpp
index f340d0a..92f3fa9 100644
--- a/src/2.lighting/1.colors/colors.cpp
+++ b/src/2.lighting/1.colors/colors.cpp
@@ -78,7 +78,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("1.colors.vs", "1.colors.fs");
-    Shader lampShader("1.lamp.vs", "1.lamp.fs");
+    Shader lightCubeShader("1.light_cube.vs", "1.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -140,9 +140,9 @@ int main()
     glEnableVertexAttribArray(0);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     // we only need to bind to the VBO (to link it with glVertexAttribPointer), no need to fill it; the VBO's data already contains all we need (it's already bound, but we do it again for educational purposes)
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
@@ -191,15 +191,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -212,7 +212,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/2.1.basic_lighting_diffuse/2.1.lamp.fs b/src/2.lighting/2.1.basic_lighting_diffuse/2.1.light_cube.fs
similarity index 100%
rename from src/2.lighting/2.1.basic_lighting_diffuse/2.1.lamp.fs
rename to src/2.lighting/2.1.basic_lighting_diffuse/2.1.light_cube.fs
diff --git a/src/2.lighting/2.1.basic_lighting_diffuse/2.1.lamp.vs b/src/2.lighting/2.1.basic_lighting_diffuse/2.1.light_cube.vs
similarity index 100%
rename from src/2.lighting/2.1.basic_lighting_diffuse/2.1.lamp.vs
rename to src/2.lighting/2.1.basic_lighting_diffuse/2.1.light_cube.vs
diff --git a/src/2.lighting/2.1.basic_lighting_diffuse/basic_lighting_diffuse.cpp b/src/2.lighting/2.1.basic_lighting_diffuse/basic_lighting_diffuse.cpp
index c6dc23d..ec844cf 100644
--- a/src/2.lighting/2.1.basic_lighting_diffuse/basic_lighting_diffuse.cpp
+++ b/src/2.lighting/2.1.basic_lighting_diffuse/basic_lighting_diffuse.cpp
@@ -78,7 +78,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("2.1.basic_lighting.vs", "2.1.basic_lighting.fs");
-    Shader lampShader("2.1.lamp.vs", "2.1.lamp.fs");
+    Shader lightCubeShader("2.1.light_cube.vs", "2.1.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -144,9 +144,9 @@ int main()
 
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -195,15 +195,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -216,7 +216,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/2.2.basic_lighting_specular/2.2.lamp.fs b/src/2.lighting/2.2.basic_lighting_specular/2.2.light_cube.fs
similarity index 100%
rename from src/2.lighting/2.2.basic_lighting_specular/2.2.lamp.fs
rename to src/2.lighting/2.2.basic_lighting_specular/2.2.light_cube.fs
diff --git a/src/2.lighting/2.2.basic_lighting_specular/2.2.lamp.vs b/src/2.lighting/2.2.basic_lighting_specular/2.2.light_cube.vs
similarity index 100%
rename from src/2.lighting/2.2.basic_lighting_specular/2.2.lamp.vs
rename to src/2.lighting/2.2.basic_lighting_specular/2.2.light_cube.vs
diff --git a/src/2.lighting/2.2.basic_lighting_specular/basic_lighting_specular.cpp b/src/2.lighting/2.2.basic_lighting_specular/basic_lighting_specular.cpp
index b38b855..fa85a4e 100644
--- a/src/2.lighting/2.2.basic_lighting_specular/basic_lighting_specular.cpp
+++ b/src/2.lighting/2.2.basic_lighting_specular/basic_lighting_specular.cpp
@@ -78,7 +78,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("2.2.basic_lighting.vs", "2.2.basic_lighting.fs");
-    Shader lampShader("2.2.lamp.vs", "2.2.lamp.fs");
+    Shader lightCubeShader("2.2.light_cube.vs", "2.2.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -144,9 +144,9 @@ int main()
 
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -196,15 +196,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -217,7 +217,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/3.1.materials/3.1.lamp.fs b/src/2.lighting/3.1.materials/3.1.light_cube.fs
similarity index 100%
rename from src/2.lighting/3.1.materials/3.1.lamp.fs
rename to src/2.lighting/3.1.materials/3.1.light_cube.fs
diff --git a/src/2.lighting/3.1.materials/3.1.lamp.vs b/src/2.lighting/3.1.materials/3.1.light_cube.vs
similarity index 100%
rename from src/2.lighting/3.1.materials/3.1.lamp.vs
rename to src/2.lighting/3.1.materials/3.1.light_cube.vs
diff --git a/src/2.lighting/3.1.materials/materials.cpp b/src/2.lighting/3.1.materials/materials.cpp
index d0ddc5f..5ec0f53 100644
--- a/src/2.lighting/3.1.materials/materials.cpp
+++ b/src/2.lighting/3.1.materials/materials.cpp
@@ -78,7 +78,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("3.1.materials.vs", "3.1.materials.fs");
-    Shader lampShader("3.1.lamp.vs", "3.1.lamp.fs");
+    Shader lightCubeShader("3.1.light_cube.vs", "3.1.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -144,9 +144,9 @@ int main()
 
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -211,15 +211,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -232,7 +232,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/3.2.materials_exercise1/3.2.lamp.fs b/src/2.lighting/3.2.materials_exercise1/3.2.light_cube.fs
similarity index 100%
rename from src/2.lighting/3.2.materials_exercise1/3.2.lamp.fs
rename to src/2.lighting/3.2.materials_exercise1/3.2.light_cube.fs
diff --git a/src/2.lighting/3.2.materials_exercise1/3.2.lamp.vs b/src/2.lighting/3.2.materials_exercise1/3.2.light_cube.vs
similarity index 100%
rename from src/2.lighting/3.2.materials_exercise1/3.2.lamp.vs
rename to src/2.lighting/3.2.materials_exercise1/3.2.light_cube.vs
diff --git a/src/2.lighting/3.2.materials_exercise1/materials_exercise1.cpp b/src/2.lighting/3.2.materials_exercise1/materials_exercise1.cpp
index e18e094..c5601f0 100644
--- a/src/2.lighting/3.2.materials_exercise1/materials_exercise1.cpp
+++ b/src/2.lighting/3.2.materials_exercise1/materials_exercise1.cpp
@@ -78,7 +78,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("3.2.materials.vs", "3.2.materials.fs");
-    Shader lampShader("3.2.lamp.vs", "3.2.lamp.fs");
+    Shader lightCubeShader("3.2.light_cube.vs", "3.2.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -144,9 +144,9 @@ int main()
 
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -205,15 +205,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -226,7 +226,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.lamp.fs b/src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.light_cube.fs
similarity index 100%
rename from src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.lamp.fs
rename to src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.light_cube.fs
diff --git a/src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.lamp.vs b/src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.light_cube.vs
similarity index 100%
rename from src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.lamp.vs
rename to src/2.lighting/4.1.lighting_maps_diffuse_map/4.1.light_cube.vs
diff --git a/src/2.lighting/4.1.lighting_maps_diffuse_map/lighting_maps_diffuse.cpp b/src/2.lighting/4.1.lighting_maps_diffuse_map/lighting_maps_diffuse.cpp
index ebd487c..dc73bb7 100644
--- a/src/2.lighting/4.1.lighting_maps_diffuse_map/lighting_maps_diffuse.cpp
+++ b/src/2.lighting/4.1.lighting_maps_diffuse_map/lighting_maps_diffuse.cpp
@@ -80,7 +80,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("4.1.lighting_maps.vs", "4.1.lighting_maps.fs");
-    Shader lampShader("4.1.lamp.vs", "4.1.lamp.fs");
+    Shader lightCubeShader("4.1.light_cube.vs", "4.1.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -145,9 +145,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -217,15 +217,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -238,7 +238,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/4.2.lighting_maps_specular_map/4.2.lamp.fs b/src/2.lighting/4.2.lighting_maps_specular_map/4.2.light_cube.fs
similarity index 100%
rename from src/2.lighting/4.2.lighting_maps_specular_map/4.2.lamp.fs
rename to src/2.lighting/4.2.lighting_maps_specular_map/4.2.light_cube.fs
diff --git a/src/2.lighting/4.2.lighting_maps_specular_map/4.2.lamp.vs b/src/2.lighting/4.2.lighting_maps_specular_map/4.2.light_cube.vs
similarity index 100%
rename from src/2.lighting/4.2.lighting_maps_specular_map/4.2.lamp.vs
rename to src/2.lighting/4.2.lighting_maps_specular_map/4.2.light_cube.vs
diff --git a/src/2.lighting/4.2.lighting_maps_specular_map/lighting_maps_specular.cpp b/src/2.lighting/4.2.lighting_maps_specular_map/lighting_maps_specular.cpp
index 681446b..c529e7c 100644
--- a/src/2.lighting/4.2.lighting_maps_specular_map/lighting_maps_specular.cpp
+++ b/src/2.lighting/4.2.lighting_maps_specular_map/lighting_maps_specular.cpp
@@ -80,7 +80,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("4.2.lighting_maps.vs", "4.2.lighting_maps.fs");
-    Shader lampShader("4.2.lamp.vs", "4.2.lamp.fs");
+    Shader lightCubeShader("4.2.light_cube.vs", "4.2.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -145,9 +145,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -221,15 +221,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -242,7 +242,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/4.4.lighting_maps_exercise4/4.4.lamp.fs b/src/2.lighting/4.4.lighting_maps_exercise4/4.4.light_cube.fs
similarity index 100%
rename from src/2.lighting/4.4.lighting_maps_exercise4/4.4.lamp.fs
rename to src/2.lighting/4.4.lighting_maps_exercise4/4.4.light_cube.fs
diff --git a/src/2.lighting/4.4.lighting_maps_exercise4/4.4.lamp.vs b/src/2.lighting/4.4.lighting_maps_exercise4/4.4.light_cube.vs
similarity index 100%
rename from src/2.lighting/4.4.lighting_maps_exercise4/4.4.lamp.vs
rename to src/2.lighting/4.4.lighting_maps_exercise4/4.4.light_cube.vs
diff --git a/src/2.lighting/4.4.lighting_maps_exercise4/lighting_maps_exercise4.cpp b/src/2.lighting/4.4.lighting_maps_exercise4/lighting_maps_exercise4.cpp
index 1d7d268..998f853 100644
--- a/src/2.lighting/4.4.lighting_maps_exercise4/lighting_maps_exercise4.cpp
+++ b/src/2.lighting/4.4.lighting_maps_exercise4/lighting_maps_exercise4.cpp
@@ -80,7 +80,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("4.4.lighting_maps.vs", "4.4.lighting_maps.fs");
-    Shader lampShader("4.4.lamp.vs", "4.4.lamp.fs");
+    Shader lightCubeShader("4.4.light_cube.vs", "4.4.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -145,9 +145,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -226,15 +226,15 @@ int main()
 
 
         // also draw the lamp object
-        lampShader.use();
-        lampShader.setMat4("projection", projection);
-        lampShader.setMat4("view", view);
+        lightCubeShader.use();
+        lightCubeShader.setMat4("projection", projection);
+        lightCubeShader.setMat4("view", view);
         model = glm::mat4(1.0f);
         model = glm::translate(model, lightPos);
         model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        lampShader.setMat4("model", model);
+        lightCubeShader.setMat4("model", model);
 
-        glBindVertexArray(lightVAO);
+        glBindVertexArray(lightCubeVAO);
         glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -247,7 +247,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/5.1.light_casters_directional/5.1.lamp.fs b/src/2.lighting/5.1.light_casters_directional/5.1.light_cube.fs
similarity index 100%
rename from src/2.lighting/5.1.light_casters_directional/5.1.lamp.fs
rename to src/2.lighting/5.1.light_casters_directional/5.1.light_cube.fs
diff --git a/src/2.lighting/5.1.light_casters_directional/5.1.lamp.vs b/src/2.lighting/5.1.light_casters_directional/5.1.light_cube.vs
similarity index 100%
rename from src/2.lighting/5.1.light_casters_directional/5.1.lamp.vs
rename to src/2.lighting/5.1.light_casters_directional/5.1.light_cube.vs
diff --git a/src/2.lighting/5.1.light_casters_directional/light_casters_directional.cpp b/src/2.lighting/5.1.light_casters_directional/light_casters_directional.cpp
index 9c4e120..8609582 100644
--- a/src/2.lighting/5.1.light_casters_directional/light_casters_directional.cpp
+++ b/src/2.lighting/5.1.light_casters_directional/light_casters_directional.cpp
@@ -77,7 +77,7 @@ int main()
     // build and compile shaders
     // -------------------------
     Shader lightingShader("5.1.light_casters.vs", "5.1.light_casters.fs");
-    Shader lampShader("5.1.lamp.vs", "5.1.lamp.fs");
+    Shader lightCubeShader("5.1.light_cube.vs", "5.1.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -155,9 +155,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -245,15 +245,15 @@ int main()
 
 
         // a lamp object is weird when we only have a directional light, don't render the light object
-        // lampShader.use();
-        // lampShader.setMat4("projection", projection);
-        // lampShader.setMat4("view", view);
+        // lightCubeShader.use();
+        // lightCubeShader.setMat4("projection", projection);
+        // lightCubeShader.setMat4("view", view);
         // model = glm::mat4(1.0f);
         // model = glm::translate(model, lightPos);
         // model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        // lampShader.setMat4("model", model);
+        // lightCubeShader.setMat4("model", model);
 
-        // glBindVertexArray(lightVAO);
+        // glBindVertexArray(lightCubeVAO);
         // glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -266,7 +266,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/5.2.light_casters_point/5.2.lamp.fs b/src/2.lighting/5.2.light_casters_point/5.2.light_cube.fs
similarity index 100%
rename from src/2.lighting/5.2.light_casters_point/5.2.lamp.fs
rename to src/2.lighting/5.2.light_casters_point/5.2.light_cube.fs
diff --git a/src/2.lighting/5.2.light_casters_point/5.2.lamp.vs b/src/2.lighting/5.2.light_casters_point/5.2.light_cube.vs
similarity index 100%
rename from src/2.lighting/5.2.light_casters_point/5.2.lamp.vs
rename to src/2.lighting/5.2.light_casters_point/5.2.light_cube.vs
diff --git a/src/2.lighting/5.2.light_casters_point/light_casters_point.cpp b/src/2.lighting/5.2.light_casters_point/light_casters_point.cpp
index 7b71210..680a76e 100644
--- a/src/2.lighting/5.2.light_casters_point/light_casters_point.cpp
+++ b/src/2.lighting/5.2.light_casters_point/light_casters_point.cpp
@@ -80,7 +80,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("5.2.light_casters.vs", "5.2.light_casters.fs");
-    Shader lampShader("5.2.lamp.vs", "5.2.lamp.fs");
+    Shader lightCubeShader("5.2.light_cube.vs", "5.2.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -158,9 +158,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -247,15 +247,15 @@ int main()
 
 
          // also draw the lamp object
-         lampShader.use();
-         lampShader.setMat4("projection", projection);
-         lampShader.setMat4("view", view);
+         lightCubeShader.use();
+         lightCubeShader.setMat4("projection", projection);
+         lightCubeShader.setMat4("view", view);
          model = glm::mat4(1.0f);
          model = glm::translate(model, lightPos);
          model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-         lampShader.setMat4("model", model);
+         lightCubeShader.setMat4("model", model);
 
-         glBindVertexArray(lightVAO);
+         glBindVertexArray(lightCubeVAO);
          glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -268,7 +268,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/5.3.light_casters_spot/5.3.lamp.fs b/src/2.lighting/5.3.light_casters_spot/5.3.light_cube.fs
similarity index 100%
rename from src/2.lighting/5.3.light_casters_spot/5.3.lamp.fs
rename to src/2.lighting/5.3.light_casters_spot/5.3.light_cube.fs
diff --git a/src/2.lighting/5.3.light_casters_spot/5.3.lamp.vs b/src/2.lighting/5.3.light_casters_spot/5.3.light_cube.vs
similarity index 100%
rename from src/2.lighting/5.3.light_casters_spot/5.3.lamp.vs
rename to src/2.lighting/5.3.light_casters_spot/5.3.light_cube.vs
diff --git a/src/2.lighting/5.3.light_casters_spot/light_casters_spot.cpp b/src/2.lighting/5.3.light_casters_spot/light_casters_spot.cpp
index 9b484ed..cbfce0c 100644
--- a/src/2.lighting/5.3.light_casters_spot/light_casters_spot.cpp
+++ b/src/2.lighting/5.3.light_casters_spot/light_casters_spot.cpp
@@ -77,7 +77,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("5.3.light_casters.vs", "5.3.light_casters.fs");
-    Shader lampShader("5.3.lamp.vs", "5.3.lamp.fs");
+    Shader lightCubeShader("5.3.light_cube.vs", "5.3.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -155,9 +155,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -248,15 +248,15 @@ int main()
 
 
         // again, a lamp object is weird when we only have a spot light, don't render the light object
-        // lampShader.use();
-        // lampShader.setMat4("projection", projection);
-        // lampShader.setMat4("view", view);
+        // lightCubeShader.use();
+        // lightCubeShader.setMat4("projection", projection);
+        // lightCubeShader.setMat4("view", view);
         // model = glm::mat4(1.0f);
         // model = glm::translate(model, lightPos);
         // model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        // lampShader.setMat4("model", model);
+        // lightCubeShader.setMat4("model", model);
 
-        // glBindVertexArray(lightVAO);
+        // glBindVertexArray(lightCubeVAO);
         // glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -269,7 +269,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/5.4.light_casters_spot_soft/5.4.lamp.fs b/src/2.lighting/5.4.light_casters_spot_soft/5.4.light_cube.fs
similarity index 100%
rename from src/2.lighting/5.4.light_casters_spot_soft/5.4.lamp.fs
rename to src/2.lighting/5.4.light_casters_spot_soft/5.4.light_cube.fs
diff --git a/src/2.lighting/5.4.light_casters_spot_soft/5.4.lamp.vs b/src/2.lighting/5.4.light_casters_spot_soft/5.4.light_cube.vs
similarity index 100%
rename from src/2.lighting/5.4.light_casters_spot_soft/5.4.lamp.vs
rename to src/2.lighting/5.4.light_casters_spot_soft/5.4.light_cube.vs
diff --git a/src/2.lighting/5.4.light_casters_spot_soft/light_casters_spot_soft.cpp b/src/2.lighting/5.4.light_casters_spot_soft/light_casters_spot_soft.cpp
index 974c204..0b53102 100644
--- a/src/2.lighting/5.4.light_casters_spot_soft/light_casters_spot_soft.cpp
+++ b/src/2.lighting/5.4.light_casters_spot_soft/light_casters_spot_soft.cpp
@@ -77,7 +77,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("5.4.light_casters.vs", "5.4.light_casters.fs");
-    Shader lampShader("5.4.lamp.vs", "5.4.lamp.fs");
+    Shader lightCubeShader("5.4.light_cube.vs", "5.4.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -155,9 +155,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -248,15 +248,15 @@ int main()
         }
 
         // again, a lamp object is weird when we only have a spot light, don't render the light object
-        // lampShader.use();
-        // lampShader.setMat4("projection", projection);
-        // lampShader.setMat4("view", view);
+        // lightCubeShader.use();
+        // lightCubeShader.setMat4("projection", projection);
+        // lightCubeShader.setMat4("view", view);
         // model = glm::mat4(1.0f);
         // model = glm::translate(model, lightPos);
         // model = glm::scale(model, glm::vec3(0.2f)); // a smaller cube
-        // lampShader.setMat4("model", model);
+        // lightCubeShader.setMat4("model", model);
 
-        // glBindVertexArray(lightVAO);
+        // glBindVertexArray(lightCubeVAO);
         // glDrawArrays(GL_TRIANGLES, 0, 36);
 
 
@@ -269,7 +269,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.
diff --git a/src/2.lighting/6.multiple_lights/6.lamp.fs b/src/2.lighting/6.multiple_lights/6.light_cube.fs
similarity index 100%
rename from src/2.lighting/6.multiple_lights/6.lamp.fs
rename to src/2.lighting/6.multiple_lights/6.light_cube.fs
diff --git a/src/2.lighting/6.multiple_lights/6.lamp.vs b/src/2.lighting/6.multiple_lights/6.light_cube.vs
similarity index 100%
rename from src/2.lighting/6.multiple_lights/6.lamp.vs
rename to src/2.lighting/6.multiple_lights/6.light_cube.vs
diff --git a/src/2.lighting/6.multiple_lights/multiple_lights.cpp b/src/2.lighting/6.multiple_lights/multiple_lights.cpp
index 1882327..77fd3c9 100644
--- a/src/2.lighting/6.multiple_lights/multiple_lights.cpp
+++ b/src/2.lighting/6.multiple_lights/multiple_lights.cpp
@@ -80,7 +80,7 @@ int main()
     // build and compile our shader zprogram
     // ------------------------------------
     Shader lightingShader("6.multiple_lights.vs", "6.multiple_lights.fs");
-    Shader lampShader("6.lamp.vs", "6.lamp.fs");
+    Shader lightCubeShader("6.light_cube.vs", "6.light_cube.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -165,9 +165,9 @@ int main()
     glEnableVertexAttribArray(2);
 
     // second, configure the light's VAO (VBO stays the same; the vertices are the same for the light object which is also a 3D cube)
-    unsigned int lightVAO;
-    glGenVertexArrays(1, &lightVAO);
-    glBindVertexArray(lightVAO);
+    unsigned int lightCubeVAO;
+    glGenVertexArrays(1, &lightCubeVAO);
+    glBindVertexArray(lightCubeVAO);
 
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     // note that we update the lamp's position attribute's stride to reflect the updated buffer data
@@ -297,18 +297,18 @@ int main()
         }
 
          // also draw the lamp object(s)
-         lampShader.use();
-         lampShader.setMat4("projection", projection);
-         lampShader.setMat4("view", view);
+         lightCubeShader.use();
+         lightCubeShader.setMat4("projection", projection);
+         lightCubeShader.setMat4("view", view);
     
          // we now draw as many light bulbs as we have point lights.
-         glBindVertexArray(lightVAO);
+         glBindVertexArray(lightCubeVAO);
          for (unsigned int i = 0; i < 4; i++)
          {
              model = glm::mat4(1.0f);
              model = glm::translate(model, pointLightPositions[i]);
              model = glm::scale(model, glm::vec3(0.2f)); // Make it a smaller cube
-             lampShader.setMat4("model", model);
+             lightCubeShader.setMat4("model", model);
              glDrawArrays(GL_TRIANGLES, 0, 36);
          }
 
@@ -322,7 +322,7 @@ int main()
     // optional: de-allocate all resources once they've outlived their purpose:
     // ------------------------------------------------------------------------
     glDeleteVertexArrays(1, &cubeVAO);
-    glDeleteVertexArrays(1, &lightVAO);
+    glDeleteVertexArrays(1, &lightCubeVAO);
     glDeleteBuffers(1, &VBO);
 
     // glfw: terminate, clearing all previously allocated GLFW resources.