glexplosion.h

#ifndef __EXPLOSION_H_INCLUDED__
#define __EXPLOSION_H_INCLUDED__

#include "glparticle.h"

const vec3      PARTICLE_VELOCITY  (0.0f, 2.0f, 0.0f);
const vec3      VELOCITY_VARIATION  (4.0f, 4.0f, 4.0f);
const vec3      PARTICLE_ACCELERATION  (0.0f, -5.0f, 0.0f);
const float     PARTICLE_SIZE      = 3.0f;//5.0f;
const float     SIZE_VARIATION     = 0.3f;//2.0f;
#define FRAND   (((float)rand()-(float)rand())/RAND_MAX)

class glExplosion : public glParticleSystem
{
public:
  glExplosion(int maxParticles, vec3 origin, float spread, GLuint texture);
  void  Update(float elapsedTime);
  void  Render();
  bool  IsDead() { return m_numParticles == 0; }

  void    InitializeParticle(int index);
  float   m_spread;
  GLuint  m_texture;     
};
#endif