finished chapter "Colors"

src/Engine/Engine.vcxproj

@@ -169,6 +169,10 @@
     <Image Include="images\container.jpg" />
     <Image Include="images\wall.jpg" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="shaders\default\simple.frag" />
+    <None Include="shaders\default\simple.vert" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

src/Engine/Engine.vcxproj.filters

@@ -83,4 +83,8 @@
       <Filter>Resource Files</Filter>
     </Image>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="shaders\default\simple.vert" />
+    <None Include="shaders\default\simple.frag" />
+  </ItemGroup>
 </Project>

src/Engine/main.cpp

@@ -15,8 +15,8 @@
 
 #include "vertices.h"
 
-// Continue: https://learnopengl.com/Lighting/Colors
-// Chapter: A lighting scene
+// Continue: https://learnopengl.com/Lighting/Basic-Lighting
+// Chapter: Not yet started
 //
 // TODO: look at project->properties->VC++ Directories-> change everything to the Environment var
 // For the "real" Nebulix Engine setup everything so it can be compiled/used with VSCode/CLion and not just VS 
@@ -63,7 +63,8 @@ void ProcessInput(GLFWwindow* window)
 		cam.ProcessKeyboard(MovementDirection::RIGHT, deltaTime);
 	if(glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
 		cam.ProcessKeyboard(MovementDirection::UP, deltaTime);
-	if(glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS || glfwGetKey(window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS)
+	if(glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS || glfwGetKey(window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS
+		|| glfwGetKey(window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS)
 		cam.ProcessKeyboard(MovementDirection::DOWN, deltaTime);
 }
 
@@ -147,13 +148,17 @@ int main()
 	};
 
 
-	std::string vertexPath = "shaders/default/default.vert";
-	std::string fragmentPath = "shaders/default/default.frag";
+	std::string lightingVertexPath = "shaders/default/default.vert", lampVertexPath = "shaders/default/simple.vert";
+	std::string lightingFragmentPath = "shaders/default/default.frag", lampFragmentPath = "shaders/default/simple.frag";
 
-	std::unique_ptr<Nebulix::Shader> shader;
+	std::shared_ptr<Nebulix::Shader> lighting, lamp;
+	std::vector<std::shared_ptr<Nebulix::Shader>> allShaders = std::vector<std::shared_ptr<Nebulix::Shader>>();
 	try
 	{
-		shader = std::make_unique<Nebulix::Shader>(vertexPath, fragmentPath);
+		lighting = std::make_shared<Nebulix::Shader>(lightingVertexPath, lightingFragmentPath);
+		lamp = std::make_shared<Nebulix::Shader>(lampVertexPath, lampFragmentPath);
+		allShaders.push_back(lighting);
+		allShaders.push_back(lamp);
 	}
 	catch (const std::exception &e)
 	{
@@ -166,9 +171,16 @@ int main()
 	//Texture2D containerImage("images/container.jpg");
 	//Texture2D faceImage("images/awesomeface.png", 0, GL_RGBA);
 
-	std::vector<float> verts(std::begin(vertices_container), std::end(vertices_container));
-	std::vector<Nebulix::VertexAttribute> vertexAttribs = { Nebulix::VertexAttribute(), Nebulix::VertexAttribute(GL_FLOAT, GL_FALSE, 2) };
-	Nebulix::GameObject cube = Nebulix::GameObject(verts, vertexAttribs);
+	std::vector<float> verts(std::begin(vertices_cube), std::end(vertices_cube));
+	std::vector<Nebulix::VertexAttribute> vertexAttribs = { Nebulix::VertexAttribute() };
+	Nebulix::GameObject cube(verts, vertexAttribs);
+	vec3 lightPosition = glm::vec3(1.2f, 1.0f, 2.0f);
+	Nebulix::GameObject lightBulb(verts, vertexAttribs, lightPosition, glm::vec3(0.2f));
+
+	std::vector<Nebulix::GameObject> allObjects = std::vector<Nebulix::GameObject>();
+	allObjects.push_back(cube);
+	allObjects.push_back(lightBulb);
+
 	// main loop
 	while(!glfwWindowShouldClose(window))
 	{
@@ -176,18 +188,31 @@ int main()
 		deltaTime = currentFrameTime - lastFrameTime;
 		lastFrameTime = currentFrameTime;
 
-		glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
 		ProcessInput(window);
 
 		mat4 projectionMatrix = glm::perspective(glm::radians(cam.Fov), 800.0f / 600.0f, 0.1f, 100.0f);
 
+		for (size_t i = 0; i < allShaders.size(); i++)
+		{
+			auto shader = allShaders[i];
 			shader->Use();
 			shader->SetMatrix("viewMatrix", cam.GetViewMatrix()); // more or less the camera
 			shader->SetMatrix("projectionMatrix", projectionMatrix);
-		shader->SetMatrix("modelMatrix", cube.GetModelMatrix());
-		cube.Draw();
+			shader->SetMatrix("modelMatrix", allObjects[i].GetModelMatrix());
+		}
+
+		lighting->Use();
+		lighting->SetFloat("lightColour", 1.0f, 1.0f, 1.0f);
+		lighting->SetFloat("objectColour", 1.0f, 0.5f, 0.31f);
+
+		for (size_t i = 0; i < allObjects.size(); i++)
+		{
+			allShaders[i]->Use();
+			allObjects[i].Draw();
+		}
 
 		glfwSwapBuffers(window);
 		glfwPollEvents();

src/Engine/object/game_object.h

@@ -40,14 +40,11 @@ namespace Nebulix
 	{
 	public:
 		glm::vec3 Position;
+		glm::vec3 Scale;
 
-		GameObject(std::vector<float>& vertices, std::vector<VertexAttribute> vertexAttributes)
-			: vertices{ vertices }, vertexAttributes{ vertexAttributes }, Position{glm::vec3(0.0f)}
-		{
-			Init();
-		}
-		GameObject(std::vector<float> &vertices, std::vector<VertexAttribute> vertexAttributes, glm::vec3& position)
-			: vertices{vertices}, vertexAttributes{ vertexAttributes }, Position{position}
+		GameObject(std::vector<float>& vertices, std::vector<VertexAttribute> vertexAttributes, 
+			glm::vec3 position = glm::vec3(0.0f), glm::vec3 scale = glm::vec3(1.0f))
+			: vertices{ vertices }, vertexAttributes{ vertexAttributes }, Position{position}, Scale{scale}
 		{
 			Init();
 		}
@@ -57,7 +54,7 @@ namespace Nebulix
 			glDeleteBuffers(1, &vertexBuffer);
 		}
 
-		// NOTE: This method will only call "Shader.Use()" but will not set any properties.
+		// NOTE: This method will not call "Shader.Use()" but will not set any properties.
 		// This is because I do not know the names and values of the properties. Most likely this will be possible after learning about materials
 		void Draw()
 		{
@@ -74,7 +71,9 @@ namespace Nebulix
 		{
 			glm::mat4 model = glm::mat4(1.0f);
 			// TODO: add properties for rotation/scale and add these to the model matrix
-			return glm::translate(model, Position);
+			model = glm::translate(model, Position);
+			model = glm::scale(model, Scale);
+			return model;
 		}
 
 	private:

src/Engine/shaders/default/default.frag

@@ -1,7 +1,9 @@
 #version 330 core
 out vec4 FragColor;
 
+uniform vec3 lightColour, objectColour;
+
 void main()
 {
-	FragColor = vec4(1.0);
+	FragColor = vec4(lightColour * objectColour, 1.0);
 } 

src/Engine/shaders/default/simple.frag

@@ -0,0 +1,7 @@
+#version 330 core
+out vec4 FragColor;
+
+void main()
+{
+	FragColor = vec4(1.0);
+} 

src/Engine/shaders/default/simple.vert

@@ -0,0 +1,12 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+uniform mat4 modelMatrix;
+uniform mat4 viewMatrix;
+uniform mat4 projectionMatrix;
+
+void main()
+{
+	// note that we read the multiplication from right to left
+    gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(aPos, 1.0);
+}

src/Engine/vertices.h

@@ -1,7 +1,7 @@
 #pragma once
 
 
-float vertices_light[] = {
+float vertices_cube[] = {
     -0.5f, -0.5f, -0.5f,
      0.5f, -0.5f, -0.5f,
      0.5f,  0.5f, -0.5f,