finished section "Lighting"

src/Engine/Engine.vcxproj

@@ -151,6 +151,8 @@
     </CopyFileToFolders>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="lights\directionalLight.h" />
+    <ClInclude Include="lights\pointLight.h" />
     <ClInclude Include="object\game_object.h" />
     <ClInclude Include="util\camera\camera.h" />
     <ClInclude Include="Exceptions\IOException.h" />

src/Engine/Engine.vcxproj.filters

@@ -65,6 +65,12 @@
     <ClInclude Include="vertices.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="lights\directionalLight.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="lights\pointLight.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <CopyFileToFolders Include="Shaders\default\default.frag" />

src/Engine/lights/directionalLight.h

@@ -0,0 +1,37 @@
+#pragma once
+#include <glm/glm.hpp>
+#include "../shaders/Shader.h"
+
+namespace Nebulix 
+{
+
+struct DirectionalLight
+{
+public:
+	DirectionalLight(glm::vec3 direction, glm::vec3 ambient, glm::vec3 diffuse, glm::vec3 specular)
+		: direction{ direction }, ambient{ambient}, diffuse{diffuse}, specular{specular}
+	{
+	}
+
+	/**
+	Sets the values of a directional light in the shader
+	name: The name of the variable in the shader. Needs to be a struct with the same components as this struct
+	shader: The shader to set the values of
+	*/
+	void SetLight(std::string name, Shader& shader) 
+	{
+		shader.SetFloat(name + ".direction", direction);
+
+		shader.SetFloat(name + ".ambient", ambient);
+		shader.SetFloat(name + ".diffuse", diffuse);
+		shader.SetFloat(name + ".specular", specular);
+	}
+
+	glm::vec3 direction;
+
+	glm::vec3 ambient;
+	glm::vec3 diffuse;
+	glm::vec3 specular;
+};
+
+}

src/Engine/lights/pointLight.h

@@ -0,0 +1,45 @@
+#pragma once
+#include <glm/glm.hpp>
+#include "../shaders/Shader.h"
+
+namespace Nebulix
+{
+
+struct PointLight
+{
+public:
+	PointLight(glm::vec3 &position, glm::vec3 &ambient, glm::vec3 &diffuse, glm::vec3 specular, float linear = 0.09f, float quadratic = 0.032f, float constant = 1.0f)
+		: position{position}, ambient{ambient}, diffuse{diffuse}, specular{specular}, linear{linear}, quadratic{quadratic}, constant{constant}
+	{
+	}
+
+	/**
+	Sets the values of a spot light in the shader
+	name: The name of the variable in the shader. Needs to be a struct with the same components as this struct
+	shader: The shader to set the values of
+	*/
+	void SetLight(std::string name, Shader &shader)
+	{
+		shader.SetFloat(name + ".position", position);
+
+		shader.SetFloat(name + ".constant", constant);
+		shader.SetFloat(name + ".linear", linear);
+		shader.SetFloat(name + ".quadratic", quadratic);
+
+		shader.SetFloat(name + ".ambient", ambient);
+		shader.SetFloat(name + ".diffuse", diffuse);
+		shader.SetFloat(name + ".specular", specular);
+	}
+
+	glm::vec3 position;
+
+	float constant;
+	float linear;
+	float quadratic;
+
+	glm::vec3 ambient;
+	glm::vec3 diffuse;
+	glm::vec3 specular;
+};
+
+}

src/Engine/main.cpp

@@ -12,13 +12,14 @@
 #include "util/stb_image.h"
 #include "util/camera/camera.h"
 #include "object/game_object.h"
+#include "lights/directionalLight.h"
+#include "lights/pointLight.h"
 
 #include "vertices.h"
 
-// Continue: https://learnopengl.com/Lighting/Multiple-lights
-// Chapter: Putting it all together
+// Continue: https://learnopengl.com/Model-Loading/Assimp
+// 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 
 // (so basically having an "external" folder which has open gl, GLAD, GLM, stb_image etc. in it or something like this)
 
@@ -146,6 +147,12 @@ int main()
 		vec3(1.5f,  0.2f, -1.5f),
 		vec3(-1.3f,  1.0f, -1.5f)
 	};
+	std::vector<vec3> pointLightPositions = {
+		vec3(0.7f,  0.2f,  2.0f),
+		vec3(2.3f, -3.3f, -4.0f),
+		vec3(-4.0f,  2.0f, -12.0f),
+		vec3(0.0f,  0.0f, -3.0f)
+	};
 
 
 	std::string lightingVertexPath = "shaders/default/default.vert", lampVertexPath = "shaders/default/simple.vert";
@@ -178,10 +185,24 @@ int main()
 	vec3 lightPosition = glm::vec3(1.2f, 1.0f, 2.0f);
 	Nebulix::GameObject lightBulb(lightVerts, objVertexAttribs, lightPosition, glm::vec3(0.2f));
 
-	std::vector<Nebulix::GameObject> allObjects = std::vector<Nebulix::GameObject>();
+	auto allObjects = std::vector<Nebulix::GameObject>();
 	allObjects.push_back(cube);
 	allObjects.push_back(lightBulb);
 
+	vec3 diffuseColour = vec3(1.0f);
+	vec3 ambientColour = diffuseColour * vec3(0.1f);
+
+	Nebulix::DirectionalLight dirLight(vec3(-0.2f, -1.0f, -0.3f), ambientColour, vec3(0.4f), vec3(0.5f));
+	auto pointLights = std::vector<Nebulix::PointLight>();
+	Nebulix::PointLight pLight1(pointLightPositions[0], ambientColour, diffuseColour, vec3(1.0f));
+	Nebulix::PointLight pLight2(pointLightPositions[1], ambientColour, diffuseColour, vec3(1.0f));
+	Nebulix::PointLight pLight3(pointLightPositions[2], ambientColour, diffuseColour, vec3(1.0f));
+	Nebulix::PointLight pLight4(pointLightPositions[3], ambientColour, diffuseColour, vec3(1.0f));
+	pointLights.push_back(pLight1);
+	pointLights.push_back(pLight2);
+	pointLights.push_back(pLight3);
+	pointLights.push_back(pLight4);
+
 	// main loop
 	while(!glfwWindowShouldClose(window))
 	{
@@ -205,34 +226,32 @@ int main()
 			shader->Use();
 			shader->SetMatrix("viewMatrix", cam.GetViewMatrix()); // more or less the camera
 			shader->SetMatrix("projectionMatrix", projectionMatrix);
-			//shader->SetMatrix("modelMatrix", allObjects[i].GetModelMatrix());
 			shader->SetMatrix("modelMatrix", model);
 		}
 
-		glm::vec3 lightColour;
-		lightColour.x = sin(glfwGetTime() * 2.0f);
-		lightColour.y = sin(glfwGetTime() * 0.7f);
-		lightColour.z = sin(glfwGetTime() * 1.3f);
-
-		glm::vec3 diffuseColour = glm::vec3(1.0f);//lightColour * glm::vec3(0.5f);
-		glm::vec3 ambientColour = diffuseColour * glm::vec3(0.1f);
-
 		lighting->Use();
 		lighting->SetInt("material.diffuseMap", 0);
 		lighting->SetInt("material.specularMap", 1);
 		lighting->SetFloat("material.specularColour", 0.5f, 0.5f, 0.5f);
 		lighting->SetFloat("material.shininess", 32.0f);
-		lighting->SetFloat("spotLight.ambientIntensity", ambientColour);
-		lighting->SetFloat("spotLight.diffuseIntensity", diffuseColour);
-		lighting->SetFloat("spotLight.specularIntensity", 1.0f, 1.0f, 1.0f);
-		lighting->SetFloat("spotLight.position", cam.Position);
-		lighting->SetFloat("spotLight.direction", cam.Front);
-		lighting->SetFloat("spotLight.cutOffAngle", glm::cos(glm::radians(12.5f)));
-		lighting->SetFloat("spotLight.outerCutOffAngle", glm::cos(glm::radians(20.0f)));
+
+		dirLight.SetLight("dirLight", *lighting.get());
+		for (size_t i = 0; i < pointLights.size(); i++)
+		{
+			pointLights[i].SetLight("pointLights[" + std::to_string(i) + "]", *lighting.get());
+		}
+
+		//lighting->SetFloat("spotLight.ambientIntensity", ambientColour);
+		//lighting->SetFloat("spotLight.diffuseIntensity", diffuseColour);
+		//lighting->SetFloat("spotLight.specularIntensity", 1.0f, 1.0f, 1.0f);
+		//lighting->SetFloat("spotLight.position", cam.Position);
+		//lighting->SetFloat("spotLight.direction", cam.Front);
+		//lighting->SetFloat("spotLight.cutOffAngle", glm::cos(glm::radians(12.5f)));
+		//lighting->SetFloat("spotLight.outerCutOffAngle", glm::cos(glm::radians(20.0f)));
 		lighting->SetFloat("viewPosition", cam.Position);
-		lighting->SetFloat("spotLight.constant", 1.0f);
-		lighting->SetFloat("spotLight.linear", 0.09f);
-		lighting->SetFloat("spotLight.quadratic", 0.032f);
+		//lighting->SetFloat("spotLight.constant", 1.0f);
+		//lighting->SetFloat("spotLight.linear", 0.09f);
+		//lighting->SetFloat("spotLight.quadratic", 0.032f);
 
 		diffuseMap.BindTexture();
 		diffuseMap.BindTexture(GL_TEXTURE1);
@@ -256,7 +275,14 @@ int main()
 			}
 			else
 			{
-				allObjects[i].Draw();
+				for (size_t j = 0; j < 4; j++)
+				{
+					allObjects[i].Position = pointLightPositions[j];
+					glm::mat4 model = allObjects[i].GetModelMatrix();
+					
+					allShaders[i]->SetMatrix("modelMatrix", model);
+					allObjects[i].Draw();
+				}
 			}
 		}
 

src/Engine/object/game_object.h

@@ -54,7 +54,7 @@ namespace Nebulix
 			glDeleteBuffers(1, &vertexBuffer);
 		}
 
-		// NOTE: This method will not call "Shader.Use()" but will not set any properties.
+		// NOTE: This method will not call "Shader.Use()" and 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()
 		{

src/Engine/shaders/default/default.frag

@@ -13,9 +13,9 @@ struct SpotLight {
 	float cutOffAngle;
 	float outerCutOffAngle;
   
-	vec3 ambientIntensity;
-	vec3 diffuseIntensity;
-	vec3 specularIntensity;
+	vec3 ambient;
+	vec3 diffuse;
+	vec3 specular;
 
 	float constant;
 	float linear;
@@ -57,10 +57,10 @@ vec3 CalculateDirectionalLight(DirectionalLight light, vec3 normal, vec3 viewDir
 {
 	vec3 lightDir = normalize(-light.direction);
 
-	float diff = max(dot(normal, lightDir), 0);
+	float diff = max(dot(normal, lightDir), 0.0);
 
 	vec3 reflectionDir = reflect(-lightDir, normal);
-	float spec = pow(max(dot(viewDir, reflectionDir), 0), material.shininess);
+	float spec = pow(max(dot(viewDir, reflectionDir), 0.0), material.shininess);
 
 	vec3 ambient = light.ambient * vec3(texture(material.diffuseMap, TexCoords));
 	vec3 diffuse = light.diffuse * diff * vec3(texture(material.diffuseMap, TexCoords));
@@ -104,9 +104,9 @@ vec3 CalculateSpotLight(SpotLight light, vec3 normal, vec3 fragPos, vec3 viewDir
 	float distance = length(light.position - fragPos);
 	float attenuation = 1.0 / (light.constant + light.linear * distance + light.quadratic * (distance * distance));
 
-	vec3 ambientLight = light.ambientIntensity * texture(material.diffuseMap, TexCoords).rgb * attenuation;
-	vec3 diffuseLight = light.diffuseIntensity * diff * texture(material.diffuseMap, TexCoords).rgb * attenuation * intensity;
-	vec3 specularLight = light.specularIntensity * spec * texture(material.specularMap, TexCoords).rgb * attenuation * intensity;
+	vec3 ambientLight = light.ambient * texture(material.diffuseMap, TexCoords).rgb * attenuation;
+	vec3 diffuseLight = light.diffuse * diff * texture(material.diffuseMap, TexCoords).rgb * attenuation * intensity;
+	vec3 specularLight = light.specular * spec * texture(material.specularMap, TexCoords).rgb * attenuation * intensity;
 
 	return ambientLight + diffuseLight + specularLight;
 }
@@ -117,12 +117,12 @@ void main()
 	vec3 normal = normalize(Normal);
 	vec3 viewDir = normalize(viewPosition - FragPos);
 
-	//vec3 result = CalculateDirectionalLight(dirLight, normal, viewDir);
+	vec3 result = CalculateDirectionalLight(dirLight, normal, viewDir);
 	
-	//for(int i = 0; i < NR_POINT_LIGHTS; i++)
-	//	result += CalculatePointLight(pointLights[i], normal, FragPos, viewDir);
+	for(int i = 0; i < NR_POINT_LIGHTS; i++)
+		result += CalculatePointLight(pointLights[i], normal, FragPos, viewDir);
 
-	vec3 result = CalculateSpotLight(spotLight, normal, FragPos, viewDir);
+	//result += CalculateSpotLight(spotLight, normal, FragPos, viewDir);
 
 	FragColor = vec4(result, 1.0);
 }