19/20 is done so setup for day 21.

21-framebuffers/src/scene.hpp

@@ -0,0 +1,76 @@
+#pragma once
+
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/type_ptr.hpp>
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+#include "shader.hpp"
+#include "model.hpp"
+#include "shader.hpp"
+#include "model.hpp"
+#include "camera.hpp"
+#include "components.hpp"
+#include <vector>
+#include <unordered_map>
+
+struct Thing {
+  std::string name;
+  Model& model;
+  Material& material;
+  components::Position position;
+  components::Rotation rotation;
+  float scale;
+  float distance = 0;
+};
+
+struct Scene {
+  Shader shader;
+  Shader light_shader;
+
+  std::unordered_map<std::string, components::Material> materials;
+  Camera camera;
+  components::Lighting light;
+  std::unordered_map<std::string, Model> models;
+  std::vector<Thing> things;
+
+  float deltaTime = 0.0f;
+  float lastFrame = 0.0f;
+
+  Scene(components::Scene& config):
+    shader{config.shader.vertex_path, config.shader.frag_path},
+    light_shader{config.light_shader.vertex_path, config.shader.frag_path},
+    materials{config.materials},
+    camera{
+      .position=config.camera.position,
+      .front=config.camera.front,
+      .up=config.camera.up,
+      .direction=config.camera.direction,
+      .movement_speed=config.camera.movement_speed,
+    },
+    light{config.light}
+  {
+    for(auto& [name, model] : config.models) {
+      models.try_emplace(name, model.directory, model.model_path);
+    }
+
+    for(auto& thing : config.things) {
+      things.emplace_back(
+          thing.model,
+          models.at(thing.model),
+          materials.at(thing.material),
+          thing.position,
+          thing.rotation,
+          thing.scale);
+    }
+
+    shader.use();
+    shader.apply_lighting(light);
+  }
+
+  void update();
+  void draw_thing(Shader& with_shader, Thing& thing);
+  void render(GLFWwindow* window);
+  void cleanup();
+  void spawn(const std::string& name, components::Position& position, components::Rotation& rotation);
+};