#pragma once

#include "node.h"
#include "slot.h"
#include "collorgn.h"

//##########################################################################
//#######################    CollisionAssistant    #########################
//##########################################################################

class Mover;

class CollisionAssistant:
public Node
{
	friend class CollisionAssistant__MovingEntityIterator;

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Public Types
//
public:
	typedef CollisionAssistant__MovingEntityIterator
		MovingEntityIterator;

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Construction, Destruction, Testing
//
public:
	CollisionAssistant(InterestZoneID interest_zone_ID);
	~CollisionAssistant();

	Logical
		TestInstance() const;

	static CollisionAssistant*
		Make(Mover *mover);

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Update
//
public:
void
  	Update(InterestZoneID interest_zone_ID);

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Private
//
private:
  void
  	LinkToInterestZone(InterestZoneID interest_zone_ID);

  InterestZoneID
  	currentInterestZoneID;
	SlotOf<CollisionOrigin*>
		collisionOriginSocket;
};

//~~~~~~~~~~~~~~~~~ CollisionAssistant__MovingEntityIterator ~~~~~~~~~~~~~~~

class CollisionAssistant__MovingEntityIterator:
	public CollisionOrigin__MovingEntityIterator
{
public:
	CollisionAssistant__MovingEntityIterator(
		CollisionAssistant *collision_assistant
  );
	~CollisionAssistant__MovingEntityIterator();
};

#if 0
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CollisionAssistant ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class CollisionAssistant:
	public Renderer
{
	friend class CollisionAssistant__MovingEntityIterator;

public:
	//
	//--------------------------------------------------------------------
	// Public Types
	//--------------------------------------------------------------------
	//
	typedef CollisionAssistant__MovingEntityIterator
		MovingEntityIterator;

	//
	//--------------------------------------------------------------------
	// Construction, Destruction, Testing
	//--------------------------------------------------------------------
	//
	CollisionAssistant(RendererRate render_rate);
	~CollisionAssistant();

	Logical
		TestInstance() const;

	static CollisionAssistant*
		Make(Mover *mover);

	//
	//--------------------------------------------------------------------
	// LinkToEntity
	//--------------------------------------------------------------------
	//
	void
		LinkToMover(Mover *mover);

	//
	//--------------------------------------------------------------------
	// NotifyOfNewInterestingEntity
	//--------------------------------------------------------------------
	//
	void
		NotifyOfNewInterestingEntity(Entity *interesting_entity);

	//
	//--------------------------------------------------------------------
	// NotifyOfBecomingUninterestingEntity
	//--------------------------------------------------------------------
	//
	void
		NotifyOfBecomingUninterestingEntity(Entity *uninteresting_entity);

	//
	//--------------------------------------------------------------------
	// GetCollisionRoot
	//--------------------------------------------------------------------
	//
	BoxedSolidTree*
		GetCollisionRoot();

protected:
	//
	//--------------------------------------------------------------------
	// ExecuteImplementation
	//--------------------------------------------------------------------
	//
	void
		ExecuteImplementation(
			RendererComplexity complexity_update,
			InterestOrigin::InterestingEntityIterator *iterator
		);

private:
	//
	//--------------------------------------------------------------------
	// Private methods
	//--------------------------------------------------------------------
	//
	void
		LoadMissionImplementation(Mission*) {}
	void
		ShutdownImplementation() {}
	void
		SuspendImplementation() {}
	void
		ResumeImplementation() {}

	//
	//--------------------------------------------------------------------
	// Private data
	//--------------------------------------------------------------------
	//
	SChainOf<Entity*>
		movingEntitySocket;
};

//~~~~~~~~~~~~~~~~~ CollisionAssistant__MovingEntityIterator ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class CollisionAssistant__MovingEntityIterator:
	public SChainIteratorOf<Entity*>
{
public:
	CollisionAssistant__MovingEntityIterator(
		CollisionAssistant *collision_assistant
  );
	~CollisionAssistant__MovingEntityIterator();
};
#endif