It would be so awesome... it would be so cool!

src/main.cpp

@@ -1,16 +1,20 @@
 #include <GL/glew.h>
 #include <GL/gl.h>
 #include <GLFW/glfw3.h>
+#include <glm/ext/vector_float3.hpp>
 #include <stdio.h>
+#include <vector>
 
+#include "rendering/part.h"
 #include "rendering/renderer.h"
 #include "camera.h"
 
 void errorCatcher(int id, const char* str);
 
 Camera camera(glm::vec3(0.0, 0.0, 3.0));
+std::vector<Part> parts;
 
-// void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
+void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
 void processInput(GLFWwindow* window);
 void mouseCallback(GLFWwindow* window, double xpos, double ypos);
 // void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
@@ -21,12 +25,24 @@ int main() {
 
     glfwInit();
     GLFWwindow *window = glfwCreateWindow(1200, 900, "GLTest", NULL, NULL);
+    glfwSetKeyCallback(window, keyCallback);
     glfwSetMouseButtonCallback(window, mouseButtonCallback);
     glfwSetCursorPosCallback(window, mouseCallback);
 
     glfwMakeContextCurrent(window);
     glewInit();
 
+    parts.push_back(Part {
+        .position = glm::vec3(0),
+        .rotation = glm::vec3(0),
+        .scale = glm::vec3(1, 1, 1),
+        .material = Material {
+            .diffuse = glm::vec3(1.0f, 0.5f, 0.31f),
+            .specular = glm::vec3(0.5f, 0.5f, 0.5f),
+            .shininess = 32.0f,
+        }
+    });
+
     renderInit(window);
 
     do {
@@ -87,3 +103,18 @@ void mouseButtonCallback(GLFWwindow* window, int button, int action, int mods) {
         mouseFirst = true;
     }
 }
+
+void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods) {
+    if (key == GLFW_KEY_F && action == GLFW_PRESS) {
+        parts.push_back(Part {
+            .position = camera.cameraPos + camera.cameraFront * glm::vec3(3),
+            .rotation = glm::vec3(0),
+            .scale = glm::vec3(1, 1, 1),
+            .material = Material {
+                .diffuse = glm::vec3(1.0f, 0.5f, 0.31f),
+                .specular = glm::vec3(0.5f, 0.5f, 0.5f),
+                .shininess = 32.0f,
+            }
+        });
+    }
+}

src/rendering/part.h

@@ -0,0 +1,10 @@
+#pragma once
+#include <glm/glm.hpp>
+#include "material.h"
+
+struct Part {
+    glm::vec3 position;
+    glm::vec3 rotation;
+    glm::vec3 scale;
+    Material material;
+};

src/rendering/renderer.cpp

@@ -2,17 +2,21 @@
 #include <GLFW/glfw3.h>
 #include <GL/gl.h>
 #include <glm/ext.hpp>
+#include <glm/ext/matrix_transform.hpp>
 #include <glm/glm.hpp>
+#include <vector>
 
 #include "shader.h"
 #include "mesh.h"
 #include "defaultmeshes.h"
 #include "../camera.h"
+#include "part.h"
 
 #include "renderer.h"
 
 Shader *shader = NULL;
 extern Camera camera;
+extern std::vector<Part> parts;
 
 void renderInit(GLFWwindow* window) {
     glViewport(0, 0, 1200, 900);
@@ -67,14 +71,16 @@ void render(GLFWwindow* window) {
     // Pass in the camera position
     shader->set("viewPos", camera.cameraPos);
 
-    glm::mat4 model = glm::mat4(1.0f);
-    model = glm::translate(model, glm::vec3( 0.0f, 0.0f, 0.0f));
-    // float angle = 20.0f * i;
-    // model = glm::rotate(model, glm::radians(angle), glm::vec3(1.0f, 0.3f, 0.5f));
-    shader->set("model", model);
-    glm::mat3 normalMatrix = glm::mat3(glm::transpose(glm::inverse(model)));
-    shader->set("normalMatrix", normalMatrix);
+    for (Part part : parts) {
+        glm::mat4 model = glm::mat4(1.0f);
+        model = glm::translate(model, part.position);
+        // model = glm::rotate(model, part.position);
+        model = glm::scale(model, part.scale);
+        shader->set("model", model);
+        glm::mat3 normalMatrix = glm::mat3(glm::transpose(glm::inverse(model)));
+        shader->set("normalMatrix", normalMatrix);
 
-    CUBE_MESH->bind();
-    glDrawArrays(GL_TRIANGLES, 0, 36);
+        CUBE_MESH->bind();
+        glDrawArrays(GL_TRIANGLES, 0, 36);
+    }
 }