// { [sonador][COLLIDABLE_CAMERA]

#pragma once

#include "SGameCamera.h"
#include "KPrimitiveMesh.h"

namespace {

	struct CollisionArgument
	{
		K3DVector			radius;
		K3DVector 			rayPosition;
		K3DVector 			rayDirection;
		float				nearestT;
		K3DVector			collidePoint;
		K3DVector			collideDirection;
		bool				found;		
#ifdef _DEBUG
		K3DVector			foundPolygon[ 3 ];
		typedef std::vector< std::pair< K3DVector, KColor > > DEBUG_LINE_CONTAINER;
		DEBUG_LINE_CONTAINER debugLines;
#endif

		CollisionArgument( ) 
			: radius			( 0, 0, 0 )
			, rayPosition		( 0, 0, 0 )
			, rayDirection		( 0, 0, 0 )
			, nearestT			( 1.0f )
			, collidePoint		( 0, 0, 0 )
			, collideDirection	( 0, 0, 0 )
			, found				( false )			
		{
		}

		CollisionArgument& operator = ( const CollisionArgument& rhs )
		{
			if( &rhs == this ) return *this;
			radius				= rhs.radius			;
			rayPosition			= rhs.rayPosition		;
			rayDirection		= rhs.rayDirection		;
			nearestT			= rhs.nearestT			;
			collidePoint		= rhs.collidePoint		;
			collideDirection		= rhs.collideDirection	;
			found				= rhs.found				;
#ifdef _DEBUG
			foundPolygon[ 0 ]	= rhs.foundPolygon[ 0 ]	;
			foundPolygon[ 1 ]	= rhs.foundPolygon[ 1 ]	;
			foundPolygon[ 2 ]	= rhs.foundPolygon[ 2 ]	;
			debugLines.clear( );
			DEBUG_LINE_CONTAINER::const_iterator it = rhs.debugLines.begin( ), itend = rhs.debugLines.end( );
			for( ; it != itend; ++it )
				debugLines.push_back( std::make_pair( it->first, it->second ) );
#endif
			return *this;
		}
	};

}

class CTerrainMapEngine;
class SGameLowQualityWater;

//=======================================================================================
// 
// SGameCameraTerrainHeightAnimator
// 

class SGameCameraTerrainHeightAnimator : public IGameCameraAnimator
{
public:

	SGameCameraTerrainHeightAnimator
		( CTerrainMapEngine& terrain
		, SGameLowQualityWater& water );
	virtual ~SGameCameraTerrainHeightAnimator();
	virtual void Animate( DWORD time, SGameCamera& camera );
	virtual void Render( KViewportObject* pViewport ) {}
	virtual TYPE GetType() { return IGameCameraAnimator::TERRAIN_HEIGHT_RESPONSE; }

private:

	CTerrainMapEngine&		m_terrain;
	SGameLowQualityWater&	m_water;
};

//=======================================================================================
// 
// SGameCameraTerrainCollisionAnimator
// 

class SGameCameraTerrainCollisionAnimator : public IGameCameraAnimator
{
public:

	SGameCameraTerrainCollisionAnimator
		( CTerrainMapEngine& terrain
		, SGameLowQualityWater& water );
	virtual ~SGameCameraTerrainCollisionAnimator();
	virtual void Animate( DWORD time, SGameCamera& camera );
	virtual void Render( KViewportObject* pViewport ) {}
	virtual TYPE GetType() { return IGameCameraAnimator::TERRAIN_COLLISION_RESPONSE; }

private:

	void _ExecuteCollisionResponseWithTerrain( CollisionArgument& argument );
	float _GetTerrainHeight( const K3DVector& position );
	bool _HasMoved( const SGameCamera& camera );
			
	CTerrainMapEngine&		m_terrain;
	SGameLowQualityWater&	m_water;
	K3DVector				m_vPrevCameraPosition;
	K3DVector				m_vPrevTargetPosition;
	CollisionArgument		m_backupCollisionArgument;
};

//=======================================================================================
// 
// SGameCameraPropCollisionAnimator
// 

class SGameCameraPropCollisionAnimator : public IGameCameraAnimator
{
public:

	SGameCameraPropCollisionAnimator
		( CTerrainMapEngine& terrain
		, const K3DVector& vCollisionRadius = K3DVector( 1, 1, 1 )
		, DWORD dwInterpolationTime = 1000 );
	virtual ~SGameCameraPropCollisionAnimator();
	virtual void Animate( DWORD time, SGameCamera& camera );
	virtual void Render( KViewportObject* pViewport );
	virtual TYPE GetType() { return IGameCameraAnimator::TERRAIN_PROP_COLLISION_RESPONSE; }

private:

	bool _HasMoved( SGameCamera& camera );
	bool _HasInterpolated() const { return m_bInterpolated; }
	void _BackupCollisionArgument( const CollisionArgument& argument ) 
	{ 
		m_backupCollidionArgument = argument; 
	}
	void _ExecuteCollisionResponseWithProp( CollisionArgument& argument );
	void _SoftenResponse( CollisionArgument& argument );
	float _GetInterpolatedRadius();
	
	CTerrainMapEngine&	m_terrain;
	K3DVector			m_vCollidableSphereRadius;
	CollisionArgument	m_backupCollidionArgument;
	K3DVector			m_vPrevCameraPosition;
	K3DVector			m_vPrevTargetPosition;
	DWORD				m_dwTime;
	DWORD				m_dwTimeDiff;
	DWORD				m_dwInterpolationTime;
	bool				m_bInterpolated;
	float				m_fCurrRadius;
	float				m_fGoalRadius;

#ifdef _DEBUG
	KWireUtilPrimitive	m_primitiveWire;
	bool				m_bDebugRender;
#endif
};

//=======================================================================================
// 
// SGameCameraPropCollisionAnimator
// 

class SGameCameraTerrainAndPropCollisionAnimator : public IGameCameraAnimator
{
public:

	SGameCameraTerrainAndPropCollisionAnimator
		( CTerrainMapEngine& terrain
		, SGameLowQualityWater& water 
		, const K3DVector& vCollisionRadius = K3DVector( 1, 1, 1 )
		, DWORD dwInterpolationTime = 3000 );
	virtual ~SGameCameraTerrainAndPropCollisionAnimator();
	virtual void Animate( DWORD time, SGameCamera& camera );
	virtual void Render( KViewportObject* pViewport );
	void SetRadius( const K3DVector& vRadius ); // sonador 7.1.9 성능 개선
	virtual TYPE GetType() { return IGameCameraAnimator::TERRAIN_AND_PROP_COLLISION_RESPONSE; } 

private:

	bool _HasMoved( SGameCamera& camera );
	bool _HasInterpolated() const { return m_bInterpolated; }
	void _ExecuteCollisionResponseWithWater( CollisionArgument& argument, SGameCamera& camera );
	void _ExecuteCollisionResponseWithTerrain( CollisionArgument& argument );
	void _ExecuteCollisionResponseWithProp( CollisionArgument& argument );	
	void _SoftenResponse( CollisionArgument& argument );
	float _GetInterpolatedRadius();
	
	CTerrainMapEngine&		m_terrain;
	SGameLowQualityWater&	m_water;
	K3DVector				m_vCollidableSphereRadius;
	CollisionArgument		m_backupCollidionArgument;
	K3DVector				m_vPrevCameraPosition;
	K3DVector				m_vPrevTargetPosition;
	DWORD					m_dwTime;
	DWORD					m_dwTimeDiff;
	DWORD					m_dwInterpolationTime;
	bool					m_bInterpolated;
	float					m_fCurrRadius;
	float					m_fGoalRadius;

#ifdef _DEBUG
	KWireUtilPrimitive	m_primitiveWire;
	bool				m_bDebugRender;
#endif
};

// }