GameEnemy_Worm.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of Penumbra Overture.
 */

#ifndef GAME_GAME_ENEMY_WORM_H
#define GAME_GAME_ENEMY_WORM_H

#include "hpl1/engine/engine.h"
#include "hpl1/penumbra-overture/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;
    }

    Common::List<cVector3f> mlstPositions;
    cVector3f mvPosition;

    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;
    Common::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;
    Common::List<cVector3f> mlstRootPositions;
    cVector3Smoother mRootForwards;
    cVector3f mvRootPosition;
    cVector3f mvRootGoalForward;
    cVector3f mvRootForward;
    cVector3f mvRootRight;
    cVector3f mvRootUp;

    cVector3f mvRootBaseForward;

    cVector3f mvLastForward;

    int mlMaxSegmentPositions;
    float mfTurnSpeed;

    bool mbFirstUpdate;
    cVector3f mvFirstUpdatePos;

    cGameEnemy_Worm_MeshCallback *mpMeshCallback;

    cWormTailSegment *mpRootSegment;
    Common::Array<cWormTailSegment *> mvTailSegments;
};

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

#endif // GAME_GAME_ENEMY_WORM_H