/Users/frarees/Desktop/rv1/source/inc/Particle.h

//
// Particle header file
//
// Describes the state and physics controlling a point-mass particle
//
//

#ifdef _PSX
#include <sys\types.h>
#include <libgte.h>
#endif

#ifndef __PARTICLE_H__
#define __PARTICLE_H__

typedef struct ParticleStruct {
  REAL  Mass, InvMass;
  VEC OldPos;       // previous world position
  VEC Pos;        // current world position
  VEC Vel;        // velocity
  VEC Acc;        // acceleration
  VEC Impulse;      // net impulse


  QUATERNION  Quat;     // Current orientation quaternion
  QUATERNION  OldQuat;    // previous quaternion

  MAT WMatrix;      // current orientation matrix
  MAT OldWMatrix;     // previous orientation matrix

  REAL  Hardness;     // coefficient of restitution
  REAL  Resistance;     // "air" resistance
  REAL  Grip;
  REAL  StaticFriction;
  REAL  KineticFriction;
  REAL  Gravity;
  REAL  Boost;

  VEC Shift;        // Used to make sure objects aren't intersecting at end of frame

  // Stuff to remove jitter
  VEC LastVel;
//  bool  IsJitteringx;   // Whether body is jittering
//  bool  IsJitteringy;   // Whether body is jittering
//  bool  IsJitteringz;   // Whether body is jittering
//  bool  IsJittering;    // Whether body is jittering
//  int   JitterCount;    // Number of times the object has "jittered"
//  int   JitterCountMax;   // Max number of jitters allowed
//  int   JitterFrames;   // Number of frames between last and next jitter
//  int   JitterFramesMax;  // Max number of frames between jitters for it to count as a jitter

} PARTICLE;


extern void SetParticleMass(PARTICLE *particle, REAL newMass);
extern void ApplyParticleImpulse(PARTICLE *particle, VEC *impulse);
extern void UpdateParticle(PARTICLE *particle, REAL dt);
extern void ParticleWorldColls(PARTICLE *particle);


#endif

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