feat(border): refactor a Graphics::Border amb bumps i flash verd clar per impactes contra les parets

source/game/scenes/game_scene.cpp

@@ -11,7 +11,6 @@
 
 #include "core/audio/audio.hpp"
 #include "core/input/input.hpp"
-#include "core/rendering/line_renderer.hpp"
 #include "core/system/scene_context.hpp"
 #include "game/stage_system/stage_loader.hpp"
 #include "game/systems/collision_system.hpp"
@@ -31,7 +30,8 @@ GameScene::GameScene(SDLManager& sdl, SceneContext& context)
       floating_score_manager_(sdl.getRenderer()),
       trail_manager_(sdl.getRenderer()),
       text_(sdl.getRenderer()),
-      playfield_(sdl.getRenderer()) {
+      playfield_(sdl.getRenderer()),
+      border_(sdl.getRenderer()) {
     // Recuperar configuración de match des del context
     match_config_ = context_.getMatchConfig();
 
@@ -64,6 +64,17 @@ GameScene::GameScene(SDLManager& sdl, SceneContext& context)
     physics_world_.clear();
     physics_world_.setBounds(Defaults::Zones::PLAYAREA);
 
+    // Connectar els impactes contra les parets al border (bump + flash).
+    physics_world_.setBoundsHitCallback([this](const Physics::BoundsHit& hit) {
+        if (hit.impact_speed < Defaults::Border::BUMP_MIN_VELOCITY) {
+            return;
+        }
+        const float STRENGTH = std::min(
+            1.0F,
+            hit.impact_speed / Defaults::Border::BUMP_VELOCITY_REFERENCE);
+        border_.bumpAt(hit.contact_point, STRENGTH);
+    });
+
     // Load stage configuration
     stage_config_ = StageSystem::StageLoader::load("data/stages/stages.yaml");
     if (!stage_config_) {
@@ -183,6 +194,7 @@ void GameScene::stepPhysics(float delta_time) {
     }
     trail_manager_.update(delta_time, ships_);
     playfield_.update(delta_time);
+    border_.update(delta_time);
 }
 
 void GameScene::stepShootingInput() {
@@ -519,7 +531,7 @@ void GameScene::drawActiveShipsAlive() const {
 }
 
 void GameScene::drawContinueState() {
-    drawMargins();
+    border_.draw();
     drawEnemies();
     drawBullets();
     debris_manager_.draw();
@@ -530,7 +542,7 @@ void GameScene::drawContinueState() {
 }
 
 void GameScene::drawGameOverState() {
-    drawMargins();
+    border_.draw();
     drawEnemies();
     drawBullets();
     debris_manager_.draw();
@@ -601,7 +613,7 @@ void GameScene::drawInitHudState() {
 
 void GameScene::drawLevelStartState() {
     playfield_.draw();
-    drawMargins();
+    border_.draw();
     trail_manager_.draw();
     drawActiveShipsAlive();
     drawBullets();
@@ -614,7 +626,7 @@ void GameScene::drawLevelStartState() {
 
 void GameScene::drawPlayingState() {
     playfield_.draw();
-    drawMargins();
+    border_.draw();
     trail_manager_.draw();
     drawActiveShipsAlive();
     drawEnemies();
@@ -627,7 +639,7 @@ void GameScene::drawPlayingState() {
 
 void GameScene::drawLevelCompletedState() {
     playfield_.draw();
-    drawMargins();
+    border_.draw();
     trail_manager_.draw();
     drawActiveShipsAlive();
     drawBullets();
@@ -679,23 +691,6 @@ void GameScene::tocado(uint8_t player_id) {
     // Phase 3 is handled in update() when hit_timer_per_player_ >= DEATH_DURATION
 }
 
-void GameScene::drawMargins() const {
-    // Dibuixar rectangle de la zona de juego
-    const SDL_FRect& zona = Defaults::Zones::PLAYAREA;
-
-    // Coordenades dels cantons
-    int x1 = static_cast<int>(zona.x);
-    int y1 = static_cast<int>(zona.y);
-    int x2 = static_cast<int>(zona.x + zona.w);
-    int y2 = static_cast<int>(zona.y + zona.h);
-
-    // 4 línies per formar el rectangle
-    Rendering::linea(sdl_.getRenderer(), x1, y1, x2, y1);  // Top
-    Rendering::linea(sdl_.getRenderer(), x1, y2, x2, y2);  // Bottom
-    Rendering::linea(sdl_.getRenderer(), x1, y1, x1, y2);  // Left
-    Rendering::linea(sdl_.getRenderer(), x2, y1, x2, y2);  // Right
-}
-
 void GameScene::drawScoreboard() {
     // Construir text del marcador
     std::string text = buildScoreboard();