merge `master` into `loek/savemgr`

1 files changed, 27 insertions, 3 deletions

diff --git a/src/crepe/Component.h b/src/crepe/Component.h
index bc44865..0fe60b2 100644
--- a/src/crepe/Component.h
+++ b/src/crepe/Component.h
@@ -1,22 +1,46 @@
 #pragma once
 
+#include "types.h"
+
 #include <cstdint>
 
 namespace crepe {
 
 class ComponentManager;
 
+/**
+ * \brief Base class for all components
+ * 
+ * This class is the base class for all components. It provides a common
+ * interface for all components.
+ */
 class Component {
 protected:
+	//! Only the ComponentManager can create components
 	friend class crepe::ComponentManager;
-	Component(uint32_t id);
+	/**
+	 * \param id The id of the GameObject this component belongs to
+	 */
+	Component(game_object_id_t id);
 
 public:
 	virtual ~Component() = default;
+	/**
+	 * \brief Get the maximum number of instances for this component
+	 *
+	 * This method returns -1 by default, which means that there is no limit
+	 * for the number of instances. Concrete components can override this method
+	 * to set a limit.
+	 *
+	 * \return The maximum number of instances for this component
+	 */
+	virtual int get_instances_max() const { return -1; }
 
 public:
-	uint32_t game_object_id;
-	bool active;
+	//! The id of the GameObject this component belongs to
+	const game_object_id_t game_object_id;
+	//! Whether the component is active
+	bool active = true;
 };
 
 } // namespace crepe