Basic alpha blending works but I have no z ordering yet.

19-blending/src/scene.cpp

@@ -10,17 +10,18 @@ void Scene::update() {
   camera.update(deltaTime);
 }
 
-void Scene::draw_model(Shader& with_shader, Model& scene_model, Material& material, glm::vec3& position, float scale)
+void Scene::draw_thing(Shader& with_shader, Thing& thing)
 {
-  with_shader.apply_material(material);
+  with_shader.apply_material(thing.material);
 
   glm::mat4 model = glm::mat4(1.0f);
-  model = glm::translate(model, position);
-  model = glm::scale(model, glm::vec3(scale, scale, scale));
+  model = glm::translate(model, thing.position);
+  model = glm::rotate(model, glm::radians(thing.rotation.angle), thing.rotation.axes);
+  model = glm::scale(model, glm::vec3(thing.scale));
 
   with_shader.setMat4("model", model);
 
-  scene_model.draw(with_shader);
+  thing.model.draw(with_shader);
 }
 
 void Scene::render(GLFWwindow* window) {
@@ -47,7 +48,7 @@ void Scene::render(GLFWwindow* window) {
   }
 
   for(auto& thing : things) {
-    draw_model(shader, thing.model, thing.material, thing.position);
+    draw_thing(shader, thing);
   }
 }
 
@@ -55,13 +56,15 @@ void Scene::cleanup() {
   shader.cleanup();
 }
 
-void Scene::spawn(const std::string& name, components::Position& position) {
+void Scene::spawn(const std::string& name, components::Position& position, components::Rotation& rotation) {
   if(models.contains(name)) {
     things.emplace_back(
-        name,
-        models.at(name),
-        position,
-        materials.at("default"));
+          name,
+          models.at(name),
+          materials.at("default"),
+          position,
+          rotation,
+          1.0f);
   } else {
     dbc::log($F("No model named: {}", name));
   }