#ifndef MAP_REGION_H
#define MAP_REGION_H

#include "core/templates/hash_set.h"
#include "npc_unit.h"
#include "scene/3d/physics/area_3d.h"

class MapRegion : public Area3D {
	GDCLASS(MapRegion, Area3D);
	static void _bind_methods();
	void on_node_entered(Node *node);
	void ready();

protected:
	void _notification(int what);

public:
	void register_unit(NpcUnit *unit);
	void remove_unit(NpcUnit *unit);
	void raise_difficulty(double amount);
	int get_current_difficulty() const;

private:
	double difficulty{ 0.f };
	bool hunt_phase{ false };
	HashSet<NpcUnit *> units{ nullptr };

public:
	static String const sig_difficulty_increased;
	static String const sig_phase_changed;
};

#endif // !MAP_REGION_H