/* pyro.h

   Header file for PyroTechnics

   Copyright (c) 1998, Mike Oliphant and Rob Clark
*/

#include <GL/glut.h>

#ifdef WIN32
#include <values.h>
#define RRand(range) (random(MAXINT)%range)
#else
#define RRand(range) (random()%range)
#endif /* ifdef WIN32 */

#if defined WIN32 || defined __EMX__ /*os2*/
#define STRCASECMP stricmp
#else
#define STRCASECMP strcasecmp
#endif /* if defined WIN32 || defined __EMX__ */

#define Rand() (double)rand()/(double)RAND_MAX
#define Square(x) (x*x)
#define VecLen(x,y,z) sqrt(Square(x)+Square(y)+Square(z))

#define WIDTH 640
#define HEIGHT 480

#define GRAVITY -.0003
#define MAXWORKS 8
#define WORKPROB .04
#define GRNDLVL -2.0
#define MAXPARTKINDS 5
#define TIMESCALE 70.0   /* Should normalize values so this can be 1.0 */
#define FPSPRINT 30


struct Particle;
struct Firework;
typedef struct Firework Firework;
typedef struct Particle Particle;

struct Particle {
  double x,y,z;
  double dx,dy,dz;
  double odx,ody,odz;
  double mx,my,mz;
  double speed;
  double r,g,b,a;
  double mr,mg,mb,ma;
  double rval;
  double expvel,expveldev;
  double xexpfact,yexpfact,zexpfact;
  double airres;
  double decrate;
  double traillen;
  void (*cfunc)(Particle *part,Firework *work);
  void (*mfunc)(Particle *part,Firework *work);
};

struct PT_Template {
  double r,g,b,a;
  double expvel,expveldev;
  double xexpfact,yexpfact,zexpfact;
  double airres;
  double decrate;
  double traillen;
  void (*cfunc)(Particle *part,Firework *work);
  void (*mfunc)(Particle *part,Firework *work);
};
typedef struct PT_Template PT_Template;

struct Firework {
  double x,y,z;
  double dx,dy,dz;
  long int explodetime;
  double timer;
  double launchvel,launchveldev;
  double sidevel;
  double dyexplode;
  int exploded;
  int trailpos;
  int numparts;
  int numkinds;
  int flags;
  int current_part;
  double spark_int;
  double last_spark_time;
  PT_Template **ptemplates;
  Particle *parts;
  Firework *nextwork;
};

/* Firework flags */

#define WORK_SPARKLER 1

struct FW_Template {
  char *name;
  double x,y,z;
  double launchvel,launchveldev;
  double sidevel;
  double dyexplode;
  int numparts;
  int numkinds;
  int flags;
  PT_Template *ptemplates[MAXPARTKINDS];
};
typedef struct FW_Template FW_Template;

Firework *NewWork(FW_Template *template);
void DeleteWork(Firework *work);

GLubyte *read_JPEG_file(char *);

/* Position modulation functions */

void xz_wobble(Particle *part,Firework *work);

/* Color modulation functions */

void redmod(Particle *part,Firework *work);
void flash(Particle *part,Firework *work);
void fallcol(Particle *part,Firework *work);

/* Parser functions */

int ParseDisplayFile(char *filename);
int CheckDisplay();
void UpdateDisplay(double elapsed);
Firework *GetWork(void);
void RestartDisplay(void);

/* Particles */

extern PT_Template pt_white;
extern PT_Template pt_red;
extern PT_Template pt_inside;
extern PT_Template pt_outside;
extern PT_Template pt_purple;
extern PT_Template pt_cyan;
extern PT_Template pt_cyanring;
extern PT_Template pt_xz_wobble;
extern PT_Template pt_rg;
extern PT_Template pt_yellow;
extern PT_Template pt_lilyel;
extern PT_Template pt_rb;
extern PT_Template pt_yellgrn;
extern PT_Template pt_purpblue;
extern PT_Template pt_bluexline;
extern PT_Template pt_blueyline;
extern PT_Template pt_bluezline;
extern PT_Template pt_whitespark;
extern PT_Template pt_goldenspark;
extern PT_Template pt_rgspark;
extern PT_Template pt_cyanvertring;
extern PT_Template pt_rbspark;

/* Fireworks */

extern FW_Template fw_white;
extern FW_Template fw_rednwhite;
extern FW_Template fw_innout;
extern FW_Template fw_spray;
extern FW_Template fw_xz_wobble;
extern FW_Template fw_rg;
extern FW_Template fw_lilyel;
extern FW_Template fw_rb;
extern FW_Template fw_purple;
extern FW_Template fw_cyan;
extern FW_Template fw_yellow;
extern FW_Template fw_ring;
extern FW_Template fw_yellgrn;
extern FW_Template fw_puprblue;
extern FW_Template fw_cross;
extern FW_Template fw_whitespark;
extern FW_Template fw_goldenspark;
extern FW_Template fw_rgspark;
extern FW_Template fw_vertring;
extern FW_Template fw_rbspark;

#define NUMWORKS 20

extern FW_Template *Fireworks[];