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/*
* The Mana World
* Copyright 2006 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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 2 of the License, or
* any later version.
*
* The Mana World 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 The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _PARTICLEEMITTER_H
#define _PARTICLEEMITTER_H
#include <list>
#include "utils/xml.h"
#include "utils/minmax.h"
#include "resources/animation.h"
class Image;
class Map;
class Particle;
/**
* Every Particle can have one or more particle emitters that create new
* particles when they are updated
*/
class ParticleEmitter
{
public:
/**
* Constructor.
*/
ParticleEmitter(xmlNodePtr emitterNode, Particle *target, Map *map, int rotation = 0);
/**
* Copy Constructor (necessary for reference counting of particle images)
*/
ParticleEmitter(const ParticleEmitter &o);
/**
* Assignment operator that calls the copy constructor
*/
ParticleEmitter & operator=(const ParticleEmitter &o);
/**
* Destructor.
*/
~ParticleEmitter();
/**
* Spawns new particles
* @return: a list of created particles
*/
std::list<Particle *> createParticles();
/**
* Sets the target of the particles that are created
*/
void
setTarget(Particle *target)
{ mParticleTarget = target; };
private:
template <typename T> MinMax<T> readMinMax(xmlNodePtr propertyNode, T def);
/**
* initial position of particles:
*/
MinMax<float> mParticlePosX, mParticlePosY, mParticlePosZ;
/**
* initial vector of particles:
*/
MinMax<float> mParticleAngleHorizontal, mParticleAngleVertical;
/**
* Initial velocity of particles
*/
MinMax<float> mParticlePower;
/*
* Vector changing of particles:
*/
MinMax<float> mParticleGravity;
MinMax<int> mParticleRandomness;
MinMax<float> mParticleBounce;
bool mParticleFollow;
/*
* Properties of targeting particles:
*/
Particle *mParticleTarget;
MinMax<float> mParticleAcceleration;
MinMax<float> mParticleDieDistance;
MinMax<float> mParticleMomentum;
/*
* Behavior over time of the particles:
*/
MinMax<int> mParticleLifetime;
MinMax<int> mParticleFadeOut;
MinMax<int> mParticleFadeIn;
Map *mMap; /**< Map the particles are spawned on */
MinMax<int> mOutput; /**< Number of particles spawned per update */
MinMax<int> mOutputPause; /**< Pause in frames between two spawns */
int mOutputPauseLeft;
/*
* Graphical representation of the particle
*/
Image *mParticleImage; /**< Particle image, if used */
Animation mParticleAnimation; /**< Filename of particle animation file */
MinMax<float> mParticleAlpha; /**< Opacity of the graphical representation of the particles */
/** List of emitters the spawned particles are equipped with */
std::list<ParticleEmitter> mParticleChildEmitters;
};
#endif
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