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source: orxonox.OLD/trunk/src/lib/particles/particle_emitter.h @ 7618

Last change on this file since 7618 was 6825, checked in by bensch, 19 years ago

trunk: new interface to ParticleEmitters

File size: 3.1 KB
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[4597]1/*!
[5039]2 * @file particle_emitter.h
[4836]3  *  Definition of a ParticleEmitter
[3926]4*/
5
6#ifndef _PARTICLE_EMITTER_H
7#define _PARTICLE_EMITTER_H
8
9#include "p_node.h"
10
[5405]11// FORWARD DECLARATION
[3926]12class ParticleSystem;
[4437]13class TiXmlElement;
[3926]14
[4726]15// Default values
16#define PARTICLE_EMITTER_DEFAULT_SIZE              1.0
17#define PARTICLE_EMITTER_DEFAULT_EMISSION_RATE     50
18#define PARTICLE_EMITTER_DEFAULT_INHERIT_SPEED     0.0
19#define PARTICLE_EMITTER_DEFAULT_SPREAD            M_PI
[6825]20#define PARTICLE_EMITTER_DEFAULT_VELOCITY          1.0
[4726]21
[4381]22//! A class to handle an Emitter.
[6619]23class ParticleEmitter : public PNode
24{
25  friend class ParticleSystem;
26public:
[6825]27  ParticleEmitter(float emissionRate = PARTICLE_EMITTER_DEFAULT_EMISSION_RATE,
28                  float velocity = PARTICLE_EMITTER_DEFAULT_VELOCITY,
29                  float angle = PARTICLE_EMITTER_DEFAULT_SPREAD);
[4746]30  virtual ~ParticleEmitter();
[4597]31
[6822]32  virtual void loadParams(const TiXmlElement* root = NULL);
[3926]33
[3929]34  /* controlling the emitter: interface */
[3927]35  void start();
36  void stop();
[6620]37  void tick(float dt);
[3927]38
[6619]39  void setSystem(ParticleSystem* system);
40  ParticleSystem* getSystem() const { return this->system; };
41
[3929]42  /* controlling the behavour: these can be used as Animation interfaces */
[3931]43  void setEmissionRate(float emissionRate);
[4493]44  void setInheritSpeed(float value);
[3931]45  void setSpread(float angle, float randomAngle = 0.0);
[4338]46  void setEmissionVelocity(float velocity, float randomVelocity = 0.0);
[4690]47  void setEmissionMomentum(float momentum, float randomMomentum = 0.0);
[3929]48
[4836]49  /** @returns the emissionRate */
[4746]50  inline float getEmissionRate() const { return this->emissionRate; };
[4836]51  /** @returns the inherit-speed-factor */
[4746]52  inline float getInheritSpeed() const { return this->inheritSpeed; };
[4836]53  /** @returns the SpreadAngle of the emitter */
[4746]54  inline float getSpread() const { return this->angle; };
[4836]55  /** @returns the EmissionVelocity of the emitter */
[4746]56  inline float getEmissionVelocity() const { return this->velocity; };
[4836]57  /** @returns the EmissionMomentum of this emitter */
[4746]58  inline float getEmissionMomentum() const { return this->momentum; };
[4338]59
[6822]60
[4746]61  void debug() const;
[3944]62
[6822]63protected:
[6825]64  virtual void emitParticles(unsigned int count) const = 0;
[6619]65
[6825]66protected:
[4690]67  float           inheritSpeed;      //!< How much speed the particle inherits from the Emitters speed.
[4478]68  float           angle;             //!< max angle from the direction of the emitter
69  float           randomAngle;       //!< random emission angle (angle +- angleRandom is the emitted angle.
70  float           velocity;          //!< the initial speed of a Particles.
71  float           randomVelocity;    //!< the random variation from the initial Speed.
[4690]72  float           momentum;          //!< The Initial spped of the Rotation.
73  float           momentumRandom;    //!< The random variation of the Momentum.
[3932]74
[6822]75private:
76  ParticleSystem* system;            //!< The ParticleSystem this Emitter Emits into.
[4478]77  float           saveTime;          //!< The time that was missing by the last Tick (otherwise there would be no emission when framefate is too big).
[6822]78  float           emissionRate;      //!< amount of particles per seconds emitted by emitter.
[3926]79};
80
81#endif /* _PARTICLE_EMITTER_H */
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