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source: orxonox.OLD/branches/network/src/lib/particles/particle_system.h @ 6748

Last change on this file since 6748 was 6629, checked in by bensch, 19 years ago

trunk: particles: precache and ModelParticles

File size: 5.4 KB
Line 
1/*!
2 * @file particle_system.h
3
4*/
5
6#ifndef _PARTICLE_SYSTEM_H
7#define _PARTICLE_SYSTEM_H
8
9#include "world_entity.h"
10#include "physics_interface.h"
11
12#include "glincl.h"
13#include "vector.h"
14#include <list>
15
16#include "quick_animation.h"
17
18// Forward Declaration
19class TiXmlElement;
20
21#define PARTICLE_DOT_MASK              0x000001     //!< A Mask if the Particles should be displayed as DOTs
22#define PARTICLE_SPARK_MASK            0x000010     //!< A Mask if the Particles should be displayed as SPARKs
23#define PARTICLE_SPRITE_MASK           0x000100     //!< A Mask if the Particles should be displayed as SPRITESs
24#define PARTICLE_MODEL_MASK            0x001000     //!< A Mask if the Particles should be displayed as MODELSs
25#define PARTICLE_WORDL_ENTITY_MASK     0x010000     //!< A Mask if the Particles should be displayed as WORLD_ENTITIEs
26#define PARTICLE_MULTI_MASK            0x100000     //!< A Mask if they are Multi-partilces
27
28#define PARTICLE_DEFAULT_MAX_COUNT    200               //!< A default count of particles in the system.
29
30// FORWARD DECLARATION
31class Material;
32class ParticleEmitter;
33class Field;
34
35//! A struct for one Particle
36typedef struct Particle
37{
38  float         lifeTime;            //!< The time this particle has to live.
39  float         lifeCycle;           //!< The fraction of time passed. (in percentage of its lifeTime)
40
41  Vector        position;            //!< The current position of this particle.
42  Vector        velocity;            //!< The current velocity of this Particle.
43  Vector        extForce;            //!< The external Force that influences this Particle.
44  Quaternion    orientation;         //!< The current orientation of this Particle.
45  Quaternion    momentum;            //!< The current angular momentum (spin) of this Particle.
46  float         mass;                //!< The mass of this Particle.
47  float         massRand;            //!< A random mass
48  float         radius;              //!< The current size of this Particle.
49  float         radiusRand;          //!< a random Radius
50  GLfloat       color [4];           //!< A Color for the particles.
51
52  Particle*     next;                //!< pointer to the next particle in the List. (NULL if no preceding one)
53};
54
55//! A class to handle ParticleSystems
56class ParticleSystem : public WorldEntity, public PhysicsInterface {
57
58 public:
59  ParticleSystem(unsigned int maxCount = PARTICLE_DEFAULT_MAX_COUNT);
60  virtual ~ParticleSystem();
61
62  void init();
63  virtual void loadParams(const TiXmlElement* root);
64  void loadEmitters(const TiXmlElement* root);
65
66  void setLifeSpan(float lifeSpan, float randomLifeSpan = 0.0);
67  void setConserve(float conserve);
68  void setMaxCount(int maxCount);
69
70  /* Per-Particle-Attributes */
71  void setRadius(float lifeCycleTime, float radius, float randRadius = 0.0);
72  void setMass(float lifeCycleTime, float mass, float randMass = 0.0);
73  void setColor(float lifeCycleTime, float red, float green, float blue, float alpha);
74
75  /** @returns the lifespan of the particles */
76  inline float getLifeSpan() const { return this->lifeSpan; };
77  /** @returns the starting-radius of the particles */
78  inline float getStartRadius() { return this->radiusAnim.getValue(0.0); };
79  /** @returns the end-radius of the particles */
80  inline float getEndRadius() { return this->radiusAnim.getValue(1.0); };
81  /** @returns the conserve-factor of the particles */
82  inline float getConserve() const { return this->conserve; };
83  /** @returns the initial mass of the particles */
84  inline float getMass() const { return this->initialMass; };
85
86  virtual unsigned int getFaceCount() const;
87
88  void addEmitter(ParticleEmitter* emitter);
89  void removeEmitter(ParticleEmitter* emitter);
90
91  virtual void applyField(Field* field);
92  /** @brief this is an empty function, because the Physics are implemented in tick @param dt: useless here */
93  virtual void tickPhys(float dt) {};
94
95  void addParticle(const Vector& position, const Vector& velocity, const Quaternion& orientation, const Quaternion& momentum, unsigned int data = 0);
96
97  void precache(unsigned int seconds, unsigned int ticksPerSecond = 25);
98
99  virtual void tick(float dt);
100  virtual void draw() const = 0;
101
102  void debug() const;
103
104 protected:
105  float             conserve;            //!< How much energy gets conserved to the next Tick.
106  float             lifeSpan;            //!< Initial lifetime of a Particle.
107  float             randomLifeSpan;      //!< A random value for the Lifespan (around the initial lifetime)
108  float             initialMass;         //!< The initial Mass of the Particle
109  float             randomInitialMass;   //!< The random initial Mass of the Particle
110
111  int               maxCount;            //!< The maximum count of Particles.
112  int               count;               //!< The current count of Particles.
113  Particle*         particles;           //!< A list of particles of this System.
114  Particle*         deadList;            //!< A list of dead Particles in the System.
115
116  std::list<ParticleEmitter*> emitters;  //!< The Emitters that do emit into this System.
117
118  // per particle attributes
119  QuickAnimation    radiusAnim;          //!< Animation of the radius
120  QuickAnimation    randRadiusAnim;      //!< Animation of the random Value of the radius
121  QuickAnimation    massAnim;            //!< Animation of the mass
122  QuickAnimation    randMassAnim;        //!< Animation of the random Mass
123  QuickAnimation    colorAnim[4];        //!< Animation of the 4 colors (r,g,b,a)
124};
125
126#endif /* _PARTICLE_SYSTEM_H */
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