www.pudn.com > ATimeToKill.rar > explosion.h

/**************************************************************************** 
 Snowstorm.h  Particle system representing a snowstorm 
  
 Author   :   Dave Astle 
 Date     :   3/17/2001 
 
 Written for OpenGL Game Programming 
*****************************************************************************/ 
#ifndef __EXPLOSION_H_INCLUDED__ 
#define __EXPLOSION_H_INCLUDED__ 
 
 
/********************************* Includes *********************************/ 
#include "Particles.h" 
 
 
/*************************** Constants and Macros ***************************/ 
const CVector PARTICLE_VELOCITY  (0.0f, 3.0f, 0.0f); 
const CVector VELOCITY_VARIATION  (8.0f, 8.0f, 8.0f); 
const CVector PARTICLE_ACCELERATION  (0.0f, -5.0f, 0.0f); 
const float     PARTICLE_SIZE      = 5.0f; 
const float     SIZE_VARIATION     = 2.0f; 
 
#define FRAND   (((float)rand()-(float)rand())/RAND_MAX) 
 
/***************************** Data structures ******************************/ 
class CExplosion : public CParticleSystem 
{ 
public: 
  CExplosion(int maxParticles, CVector origin, float spread, GLuint texture); 
 
  void  Update(float elapsedTime); 
  void  Render(); 
 
  bool  IsDead() { return m_numParticles == 0; } 
 
protected: 
  void    InitializeParticle(int index); 
  float   m_spread; 
 
  GLuint  m_texture;     // explosion texture 
}; 
 
 
 
#endif // __EXPLOSION_H_INCLUDED__