feat: implementar jerarquia d'entitats amb classe base Entitat

source/game/entities/nau.cpp

@@ -8,22 +8,26 @@
 
 #include <algorithm>
 #include <cmath>
+#include <cstdint>
 #include <iostream>
 
 #include "core/defaults.hpp"
+#include "core/entities/entitat.hpp"
 #include "core/graphics/shape_loader.hpp"
 #include "core/input/input.hpp"
+#include "core/input/input_types.hpp"
 #include "core/rendering/shape_renderer.hpp"
+#include "core/types.hpp"
 #include "game/constants.hpp"
 
 Nau::Nau(SDL_Renderer* renderer, const char* shape_file)
-    : renderer_(renderer),
-      centre_({.x = 0.0F, .y = 0.0F}),
-      angle_(0.0F),
+    : Entitat(renderer),
       velocitat_(0.0F),
       esta_tocada_(false),
-      brightness_(Defaults::Brightness::NAU),
       invulnerable_timer_(0.0F) {
+    // [NUEVO] Brightness específic per naus
+    brightness_ = Defaults::Brightness::NAU;
+
     // [NUEVO] Carregar forma compartida des de fitxer
     forma_ = Graphics::ShapeLoader::load(shape_file);