____                _       __
    / __ )____  _____   | |     / /___ ___________
   / __  / __ \/ ___/   | | /| / / __ `/ ___/ ___/
  / /_/ / /_/ (__  )    | |/ |/ / /_/ / /  (__  )
 /_____/\____/____/     |__/|__/\__,_/_/  /____/

       A futuristic real-time strategy game.
          This file is part of Bos Wars.

(C) Copyright 2001-2007 by the Bos Wars and Stratagus Project. Distributed under the "GNU General Public License"

---

particle.h

Go to the documentation of this file.

//     ____                _       __               
//    / __ )____  _____   | |     / /___ ___________
//   / __  / __ \/ ___/   | | /| / / __ `/ ___/ ___/
//  / /_/ / /_/ (__  )    | |/ |/ / /_/ / /  (__  ) 
// /_____/\____/____/     |__/|__/\__,_/_/  /____/  
//                                              
//       A futuristic real-time strategy game.
//          This file is part of Bos Wars.
//
//
//      (c) Copyright 2007-2008 by Jimmy Salmon and Francois Beerten
//
//      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; only version 2 of the License.
//
//      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, write to the Free Software
//      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
//      02111-1307, USA.

#ifndef __PARTICLE_H__
#define __PARTICLE_H__


#include <vector>

class CGraphic;
class CViewport;


struct CPosition
{
    CPosition(float x, float y) : x(x), y(y) {}
    float x;
    float y;
};

class Animation
{
public:
    virtual ~Animation() {}
    virtual void draw(int x, int y) = 0;
    virtual void update(int ticks) = 0;
    virtual bool isFinished() = 0;
    virtual Animation * clone() = 0;
};

class GraphicAnimation : public Animation
{
    CGraphic *g;
    int ticksPerFrame;
    int currentFrame;
    int currTicks;
public:
    GraphicAnimation(CGraphic *g, int ticksPerFrame);
    virtual ~GraphicAnimation() {}

    virtual void draw(int x, int y);

    virtual void update(int ticks);

    virtual bool isFinished();

    virtual Animation * clone();
};



// Base particle class
class CParticle
{
public:
    CParticle(CPosition position) :
        pos(position), destroyed(false)
    {}
    virtual ~CParticle() {}

    virtual void draw() {}
    virtual void update(int ticks) {}

    inline void destroy() { destroyed = true; }
    inline bool isDestroyed() { return destroyed; }

    virtual CParticle * clone() = 0;

protected:
    CPosition pos;
    bool destroyed;
};


class StaticParticle : public CParticle
{
public:
    StaticParticle(CPosition position, Animation *flame);
    virtual ~StaticParticle();

    virtual void draw();
    virtual void update(int ticks);
    virtual CParticle * clone();

protected:
    Animation *animation;
};


// Chunk particle
class CChunkParticle : public CParticle
{
public:
    CChunkParticle(CPosition position, Animation *smokeAnimation);
    virtual ~CChunkParticle();

    virtual void draw();
    virtual void update(int ticks);
    virtual CParticle * clone();

protected:
    CPosition initialPos;
    int initialVelocity;
    float trajectoryAngle;
    int nextSmokeTicks;
    int lifetime;
    int age;
    float height;
    Animation *smokeAnimation;

    struct {
        float x;
        float y;
    } direction;
};


// Smoke particle
class CSmokeParticle : public CParticle
{
public:
    CSmokeParticle(CPosition position, Animation *animation);
    virtual ~CSmokeParticle();

    virtual void draw();
    virtual void update(int ticks);
    virtual CParticle * clone();

protected:
    Animation *puff;
};


class CParticleManager
{
public:
    CParticleManager();
    ~CParticleManager();

    static void init();
    static void exit();

    void draw(const CViewport *vp);
    void update();

    void add(CParticle *particle);
    void clear();
    
    CPosition getScreenPos(const CPosition &pos);

    inline void setLowDetail(bool detail) { lowDetail = detail; }
    inline bool getLowDetail() const { return lowDetail; }

private:
    std::vector<CParticle *> particles;
    std::vector<CParticle *> new_particles;
    const CViewport *vp;
    unsigned long lastTicks;
    bool lowDetail;
};

extern CParticleManager ParticleManager;


#endif // !__PARTICLE_H__

---