#ifndef PARTICLE_H
#define PARTICLE_H

#include <sys/types.h>


typedef struct _xsw_particle_struct	xsw_particle_struct;
#define XSW_PARTICLE(p)			((xsw_particle_struct *)(p))


/*
 *	Types:
 */
#define XSW_PARTICLE_TYPE_UNKNOWN	0
#define XSW_PARTICLE_TYPE_SMOKE		1	/* Drifting animated smoke or
						 * fire trails */
#define XSW_PARTICLE_TYPE_EFFECT	2	/* Stationary animated sprite */
#define XSW_PARTICLE_TYPE_SHOCKWAVE	3


/*
 *	Particle:
 */
struct _xsw_particle_struct {

	int		type;			/* One of XSW_PARTICLE_TYPE_* */

	int		imgref_num;

	long		size_start, size_end;	/* Of particle, in screen
						 * units */
	long		sect_x, sect_y, sect_z;
	float		x, y, z;		/* In real units */
	float		heading, pitch, bank;

	time_t		birth_time,		/* In ms */
			life_span;		/* In ms */

};

extern xsw_particle_struct	**xsw_particle;
extern int			total_particles;


int ParticleCreate(
	xsw_particle_struct ***list, int *total,
	int type,
	int imgref_num,
	long sect_x, long sect_y, long sect_z,
	float x, float y, float z,
	float heading, float pitch, float bank,
	long size_start, long size_end,
	time_t birth_time,	/* In ms */
	time_t life_span	/* In ms */
);
void ParticleClear(xsw_particle_struct ***list, int *total);

void ParticleUpdateAll(
	xsw_particle_struct ***list, int *total,
	const time_t cur_ms, const time_t cur_sec, const float tc
);



#endif	/* PARTICLE_H */