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1 #ifndef _PARTICLES_H_
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2 #define _PARTICLES_H_
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3
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4 #include <list>
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5 #include "n3dmath.h"
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6 #include "3dgeom.h"
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7 #include "objects.h"
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8
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9 enum BlendingFactor;
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10
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11 class Particle {
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12 public:
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13 Vector3 pos;
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14 Vector3 vel;
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15 unsigned int life;
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16
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17 Particle(int life=0);
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18 Particle(const Vector3 &pos, int life=0);
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19 Particle(const Vector3 &pos, const Vector3 &vel, int life=0);
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20
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21 void Update(const Vector3 &forces, float friction=0);
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22 };
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23
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24 class ParticleSystem {
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25 private:
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26 GraphicsContext *gc;
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27 bool FixedUpdateRate;
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28 float UpdateRate;
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29 float LastUpdate;
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30
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31 BlendingFactor SourceBlend, DestBlend;
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32
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33 Vector3 pos, prevpos; // position of the emmiter (world space)
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34 Vector3 ShootDirection; // an initial velocity vector for the particles
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35 std::list<Particle> particles; // a list of particles
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36 Vertex pquad[4]; // the basic particle quad vertices
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37 Triangle ptris[2]; // the basic particle quad triangles
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38 float size; // size of the particles
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39 float friction; // friction impeding particle movement
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40 int SpawnRate; // rate of particle generation
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41 float SpawnRadius; // spawning radius around the emmiter
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42 float GravForce; // Gravitual force
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43 float DispRads;
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44 int life; // particle life
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45 bool EmmiterAffectsParticleTrajectory; // ehm ... yeah
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46 float SpawnDiffDispersion;
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47 int SpawnRateChange; // if 0 then spawn rate constant
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48
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49 float StartRed, StartGreen, StartBlue;
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50 float EndRed, EndGreen, EndBlue;
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51
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52 int VertsToRender, TrianglesToRender;
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53 int vbsize, ibsize, maxprimitives;
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54 Texture *texture; // the particles' texture
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55 Object *obj; // the particles' mesh object (if present don't render quads)
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56 Vertex *varray; // secondary vertex array (ease of development)
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57 Triangle *tarray; // the triangles
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58
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59 int VertexCount, IndexCount, TriCount, ParticleCount;
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60
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61 public:
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62 Matrix4x4 Translation, OrbitRot;
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63
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64 ParticleSystem(GraphicsContext *gc);
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65 ~ParticleSystem();
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66
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67 void SetGraphicsContext(GraphicsContext *gc);
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68 void SetParticleSize(float psize);
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69 void SetParticleLife(int life);
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70 void SetFriction(float friction);
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71 void SetSpawnRate(float spawnrate);
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72 void SetSpawnRadius(float radius);
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73 void SetTexture(Texture *texture);
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74 void SetObject(Object *obj);
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75 void SetPosition(const Vector3 &pos);
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76 void SetShootDirection(const Vector3 &dir);
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77 void SetGravitualForce(float grav);
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78 void SetEmmiterDependence(bool dep);
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79 void SetMaxDispersionAngle(float maxdisp);
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80 void SetInitialColor(float r, float g, float b);
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81 void SetDeathColor(float r, float g, float b);
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82 void SetBlendingMode(BlendingFactor src, BlendingFactor dest);
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83 void SetSpawningDifferenceDispersion(float val);
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84 void SetSpawnRateChange(int change);
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85
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86 void Translate(float x, float y, float z);
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87 void Rotate(float x, float y, float z);
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88 void Rotate(const Vector3 &axis, float angle);
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89 void ResetTranslation();
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90 void ResetRotation();
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91
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92 int CountParticles();
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93
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94 void Update(float t = 0.0f);
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95 void Render();
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96 };
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97
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98
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99 #endif // _PARTICLES_H_
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