feat(players): suport del segon jugador amb events amb player_id

source/game/entities/concrete/rolling_rock.cpp

@@ -4,6 +4,7 @@
 
 #include "game/entities/entity_factory.hpp"
 #include "game/entities/event_bus.hpp"
+#include "game/entities/player.hpp"
 #include "game/map/map.hpp"
 
 namespace {
@@ -60,8 +61,14 @@ void RollingRock::step(float delta_time) {
     setDirection(0.0F, 0.0F);
 }
 
-void RollingRock::onPlayerContact(Player* /*player*/) {
-    if (bus_ != nullptr) { bus_->publish("player_hit", getDamage()); }
+void RollingRock::onPlayerContact(Player* player) {
+    if (bus_ != nullptr) {
+        bus_->publish(Event{
+            .name = "player_hit",
+            .payload = getDamage(),
+            .player_id = (player != nullptr) ? player->getId() : -1,
+        });
+    }
 }
 
 REGISTER_ENTITY("rolling_rock", RollingRock)