/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of Penumbra Overture.
 *
 * Penumbra Overture is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Penumbra Overture is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Penumbra Overture.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef GAME_GAME_ENEMY_WORM_H
#define GAME_GAME_ENEMY_WORM_H

#include "StdAfx.h"
#include "GameEnemy.h"

using namespace hpl;

//-----------------------------------------

class cGameEnemy_Worm;

// BASE STATE
class iGameEnemyState_Worm_Base : public iGameEnemyState
{
public:
	iGameEnemyState_Worm_Base(int alId, cInit *apInit, iGameEnemy *apEnemy);

	virtual void OnSeePlayer(const cVector3f &avPosition, float afChance);
	virtual bool OnHearNoise(const cVector3f &avPosition, float afVolume);
	virtual void OnTakeHit(float afDamage);
	virtual void OnDeath(float afDamage);
	virtual void OnFlashlight(const cVector3f &avPosition);

	virtual void OnAnimationOver(const tString& asAnimName){}

	virtual void OnDraw(){}
	virtual void OnPostSceneDraw(){}

protected:
	cGameEnemy_Worm *mpEnemyWorm;
};

//-----------------------------------------

// IDLE STATE
class cGameEnemyState_Worm_Idle : public iGameEnemyState_Worm_Base
{
public:
	cGameEnemyState_Worm_Idle(int alId, cInit *apInit, iGameEnemy *apEnemy) :
								iGameEnemyState_Worm_Base(alId, apInit,apEnemy){}

	void OnEnterState(iGameEnemyState *apPrevState);
	void OnLeaveState(iGameEnemyState *apNextState);

	void OnUpdate(float afTimeStep);

	//void OnSeePlayer(const cVector3f &avPosition, float afChance){}


private:
	bool mbStopped;
	float mfNextWalkTime;
};

//-----------------------------------------

// HUNT STATE
class cGameEnemyState_Worm_Hunt : public iGameEnemyState_Worm_Base
{
public:
	cGameEnemyState_Worm_Hunt(int alId, cInit *apInit, iGameEnemy *apEnemy) :
	iGameEnemyState_Worm_Base(alId, apInit,apEnemy){}

	void OnEnterState(iGameEnemyState *apPrevState);
	void OnLeaveState(iGameEnemyState *apNextState);

	void OnUpdate(float afTimeStep);

	void OnSeePlayer(const cVector3f &avPosition, float afChance);
	bool OnHearNoise(const cVector3f &avPosition, float afVolume);

	void OnDraw();
	void OnPostSceneDraw();
private:
	float mfUpdatePathCount;
	float mfUpdateFreq;
	bool mbFreePlayerPath;
	bool mbLostPlayer;
	float mfLostPlayerCount;
	float mfMaxLostPlayerCount;
	float mfAttackSoundCount;

	float mfAttackCount;

	float mfSoundCount;
};

//-----------------------------------------

// DEAD STATE
class cGameEnemyState_Worm_Dead : public iGameEnemyState_Worm_Base
{
public:
	cGameEnemyState_Worm_Dead(int alId, cInit *apInit, iGameEnemy *apEnemy) :
	  iGameEnemyState_Worm_Base(alId, apInit,apEnemy){}

	  void OnEnterState(iGameEnemyState *apPrevState);
	  void OnLeaveState(iGameEnemyState *apNextState);

	  void OnUpdate(float afTimeStep){}

	  void OnSeePlayer(const cVector3f &avPosition, float afChance){}
	  bool OnHearNoise(const cVector3f &avPosition, float afVolume){ return false;}

private:
};

//-----------------------------------------

class cWormTailSegment
{
public:
	cWormTailSegment(){
		mpBone = NULL;
		mpChildSegment = NULL;
	}

	std::list<cVector3f> mlstPositions;
	cVector3f mvPostion;
	
	cVector3f mvGoalForward;

	cVector3f mvForward;
	cVector3f mvUp;
	cVector3f mvRight;

	float mfDistToFront;

	iPhysicsBody *mpBody;
	
	cBoneState *mpBone;
	
	cMatrixf m_mtxBaseRot;
    
	cWormTailSegment *mpChildSegment;
};

//-----------------------------------------

class cGameEnemy_Worm_MeshCallback : public cMeshEntityCallback
{
public:
	cGameEnemy_Worm_MeshCallback(cGameEnemy_Worm *apWorm);

	void AfterAnimationUpdate(cMeshEntity *apMeshEntity, float afTimeStep);

private:
	cGameEnemy_Worm *mpWorm;
};

//-----------------------------------------

class cVector3Smoother
{
public:
	cVector3Smoother();	

	void Add(const cVector3f& avVec);
	cVector3f GetAverage();

	void SetMax(int alMax){ mlMaxVecs = alMax;}

private:
	int mlMaxVecs;
	std::list<cVector3f> mlstVecs;
};

//-----------------------------------------


class cGameEnemy_Worm : public iGameEnemy
{
friend class cGameEnemy_Worm_MeshCallback;
public:
	cGameEnemy_Worm(cInit *apInit,const tString& asName,TiXmlElement *apGameElem);
	~cGameEnemy_Worm();
	
	void OnLoad();

	void OnUpdate(float afTimeStep);

	void ExtraPostSceneDraw();

	void ShowPlayer(const cVector3f& avPlayerFeetPos);

	bool MoveToPos(const cVector3f& avFeetPos);

	bool IsFighting();
	
	iCollideShape *GetAttackShape(){ return mpAttackShape;}

//Worm specific
	void SetupTail();

	cSoundEntity *mpMoveSound;
	
//State properties
	tString msMoveSound;

	float mfIdleFOV;
	tString msIdleFoundPlayerSound;
	float mfIdleMinSeeChance;
	float mfIdleMinHearVolume;
	float mfIdleMinWaitLength;
	float mfIdleMaxWaitLength;
	
	float mfHuntFOV;
	float mfHuntSpeed;
	float mfHuntForLostPlayerTime;
	float mfHuntMinSeeChance;
	float mfHuntMinHearVolume;

	tString msHuntSound;
	float mfHuntSoundMinInteraval;
	float mfHuntSoundMaxInteraval;

	float mfAttackDamage;
	float mfAttackInterval;
	tString msAttackHitSound;
	float mfAttackHitSoundInterval;
	float mfAttackMinMass;
	float mfAttackMaxMass;
	float mfAttackMinImpulse;
	float mfAttackMaxImpulse;
	int mlAttackStrength;

	cVector3f mvAttackDamageSize;
	
private:
    iCollideShape *mpAttackShape;

	cBoneState *mpRootBone;
	std::list<cVector3f> mlstRootPositions;
	cVector3Smoother mRootForwards;
	cVector3f mvRootPosition;
	cVector3f mvRootGoalForward;
	cVector3f mvRootForward;
	cVector3f mvRootRight;
	cVector3f mvRootUp;

	cVector3f mvRootBaseForward;
	
	cVector3f mvLastForward;

	int mlMaxSegmentPostions;
	float mfTurnSpeed;

	bool mbFirstUpdate;
	cVector3f mvFirstUpdatePos;

	cGameEnemy_Worm_MeshCallback *mpMeshCallback;

	cWormTailSegment *mpRootSegment;
	std::vector<cWormTailSegment*> mvTailSegments;
};

//-----------------------------------------

#endif // GAME_GAME_ENEMY_WORM_H