feat(fireworks): burst radial blanc al explotar enemic + tuning

source/game/effects/firework_manager.hpp

@@ -27,7 +27,7 @@ namespace Effects {
         //   n_points: nombre de línies. Default Defaults::FX::Firework::N_POINTS.
         //   initial_brightness: 0..1.
         void spawn(const Vec2& origen,
-            SDL_Color color,
+            SDL_Color color = Defaults::FX::Firework::DEFAULT_COLOR,
             float initial_speed = Defaults::FX::Firework::SPEED,
             int n_points = Defaults::FX::Firework::N_POINTS,
             float initial_brightness = Defaults::FX::Firework::INITIAL_BRIGHTNESS);

source/game/scenes/game_scene.cpp

@@ -458,6 +458,7 @@ void GameScene::runCollisionDetections() {
         .score_per_player = score_per_player_,
         .lives_per_player = lives_per_player_,
         .debris_manager = debris_manager_,
+        .firework_manager = firework_manager_,
         .floating_score_manager = floating_score_manager_,
         .match_config = match_config_,
         .on_player_hit = [this](uint8_t pid) { tocado(pid); },

source/game/systems/collision_system.cpp

@@ -76,6 +76,10 @@ namespace Systems::Collision {
                 Defaults::Physics::Debris::ENEMY_LIFETIME,
                 Defaults::Physics::Debris::ENEMY_FRICTION,
                 Defaults::Physics::Debris::ENEMY_SEGMENT_MULTIPLIER);
+
+            // Firework burst radial des del centro de l'enemic (efecte adicional al debris).
+            // No heretem color: el burst usa el blanc per defecte per a un feel més lluminós.
+            ctx.firework_manager.spawn(ENEMY_POS);
         }
     }  // anonymous namespace
 

source/game/systems/collision_system.hpp

@@ -19,6 +19,7 @@
 #include "core/defaults.hpp"
 #include "core/system/game_config.hpp"
 #include "game/effects/debris_manager.hpp"
+#include "game/effects/firework_manager.hpp"
 #include "game/effects/floating_score_manager.hpp"
 #include "game/entities/bullet.hpp"
 #include "game/entities/enemy.hpp"
@@ -36,6 +37,7 @@ namespace Systems::Collision {
         std::array<int, 2>& score_per_player;
         std::array<int, 2>& lives_per_player;
         Effects::DebrisManager& debris_manager;
+        Effects::FireworkManager& firework_manager;
         Effects::FloatingScoreManager& floating_score_manager;
         const GameConfig::MatchConfig& match_config;
         // Trigger de muerte del jugador (GameScene::tocado).