Setup for day 17.

17-refactor-bug-fix/src/scene.cpp

@@ -0,0 +1,66 @@
+#include "scene.hpp"
+#include "dbc.hpp"
+#include <math.h>
+
+void Scene::updateDelta() {
+  float currentFrame = glfwGetTime();
+  deltaTime = currentFrame - lastFrame;
+  lastFrame = currentFrame;
+}
+
+void Scene::configure() {
+  // REFACTOR: really this should be done somewhere else
+  for(auto& [name, model] : models) {
+    model.connect_shader(shader);
+  }
+}
+
+void Scene::draw_model(Model& scene_model, Material& material, glm::mat4& projection, glm::mat4& view, glm::vec3& position)
+{
+  shader.apply_material(material);
+
+  float time = glfwGetTime();
+  glm::mat4 model = glm::mat4(1.0f);
+  model = glm::translate(model, position);
+  model = glm::rotate(model, glm::radians(time * 10.0f), glm::vec3(1.0f, 0.3f, 0.5f));
+
+  shader.setMat4("model", model);
+
+  scene_model.draw(shader);
+}
+
+void Scene::render(GLFWwindow* window) {
+  glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+  shader.use();
+
+  // time is used for fake 3d rotation
+  float time = glfwGetTime();
+
+  camera.update(deltaTime);
+
+  glm::mat4 view = camera.look_at();
+  glm::mat4 projection = glm::mat4(1.0f);
+
+  // fov, aspect, near plane, far plane
+  projection = glm::perspective(glm::radians(camera.fov), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
+
+  shader.use();
+  shader.setMat4("view", view);
+  shader.setMat4("projection", projection);
+  shader.setVec3("viewPos", camera.position);
+
+  light.camera.position = camera.position;
+  light.camera.direction = camera.front;
+  shader.apply_lighting(light);
+
+  // BUG: no connection between models and positions
+  for(auto& thing : things) {
+    draw_model(thing.model, thing.material, projection, view, thing.position);
+  }
+}
+
+void Scene::cleanup() {
+  shader.cleanup();
+}