feat(entities): andamiatge del sistema d'entitats (classes, factory, bus, YAML, placeholders, smoke tests)

source/game/entities/concrete/rolling_rock.cpp

@@ -0,0 +1,49 @@
+#include "game/entities/concrete/rolling_rock.hpp"
+
+#include <string>
+
+#include "game/entities/entity_factory.hpp"
+#include "game/entities/event_bus.hpp"
+
+namespace {
+
+    // Tradueix la direcció inicial textual del YAML a un vector 2D. Valors
+    // no reconeguts → sense moviment (útil per spawn estàtics a tests).
+    void applyInitialDirection(const std::string& dir, DynamicHazard& rock) {
+        if (dir == "right") {
+            rock.setDirection(1.0F, 0.0F);
+        } else if (dir == "left") {
+            rock.setDirection(-1.0F, 0.0F);
+        } else if (dir == "up") {
+            rock.setDirection(0.0F, -1.0F);
+        } else if (dir == "down") {
+            rock.setDirection(0.0F, 1.0F);
+        } else {
+            rock.setDirection(0.0F, 0.0F);
+        }
+    }
+
+}  // namespace
+
+RollingRock::RollingRock(const fkyaml::node& yaml) {
+    name_ = yaml.contains("name") ? yaml["name"].get_value<std::string>() : std::string("rolling_rock");
+    collides_ = true;
+    interactable_ = false;
+
+    if (yaml.contains("stats")) {
+        const auto& s = yaml["stats"];
+        if (s.contains("speed")) { setSpeed(s["speed"].get_value<float>()); }
+        if (s.contains("damage")) { setDamage(s["damage"].get_value<int>()); }
+    }
+    std::string initial = "right";
+    if (yaml.contains("ai") && yaml["ai"].contains("initial_direction")) {
+        initial = yaml["ai"]["initial_direction"].get_value<std::string>();
+    }
+    applyInitialDirection(initial, *this);
+}
+
+void RollingRock::onPlayerContact(Player* /*player*/) {
+    if (bus_ != nullptr) { bus_->publish("player_hit", getDamage()); }
+}
+
+REGISTER_ENTITY("rolling_rock", RollingRock)