1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/pattr.c	Tue Sep 27 07:42:54 2011 +0300
     1.3 @@ -0,0 +1,105 @@
     1.4 +#include <stdio.h>
     1.5 +#include <stdlib.h>
     1.6 +#include <string.h>
     1.7 +#include <errno.h>
     1.8 +#include "pattr.h"
     1.9 +#include "psys_gl.h"
    1.10 +
    1.11 +static void *tex_cls;
    1.12 +static unsigned int (*load_texture)(const char*, void*) = psys_gl_load_texture;
    1.13 +static void (*unload_texture)(unsigned int, void*) = psys_gl_unload_texture;
    1.14 +
    1.15 +void psys_texture_loader(unsigned int (*load)(const char*, void*), void (*unload)(unsigned int, void*), void *cls)
    1.16 +{
    1.17 +	load_texture = load;
    1.18 +	unload_texture = unload;
    1.19 +	tex_cls = cls;
    1.20 +}
    1.21 +
    1.22 +int psys_init_attr(struct psys_attributes *attr)
    1.23 +{
    1.24 +	memset(attr, 0, sizeof *attr);
    1.25 +
    1.26 +	if(psys_init_track3(&attr->spawn_range) == -1)
    1.27 +		goto err;
    1.28 +	if(psys_init_track(&attr->rate) == -1)
    1.29 +		goto err;
    1.30 +	if(psys_init_anm_rnd(&attr->life) == -1)
    1.31 +		goto err;
    1.32 +	if(psys_init_anm_rnd(&attr->size) == -1)
    1.33 +		goto err;
    1.34 +	if(psys_init_anm_rnd3(&attr->dir) == -1)
    1.35 +		goto err;
    1.36 +	if(psys_init_track3(&attr->grav) == -1)
    1.37 +		goto err;
    1.38 +
    1.39 +	attr->max_particles = -1;
    1.40 +	return 0;
    1.41 +
    1.42 +err:
    1.43 +	psys_destroy_attr(attr);
    1.44 +	return -1;
    1.45 +}
    1.46 +
    1.47 +void psys_destroy_attr(struct psys_attributes *attr)
    1.48 +{
    1.49 +	psys_destroy_track3(&attr->spawn_range);
    1.50 +	psys_destroy_track(&attr->rate);
    1.51 +	psys_destroy_anm_rnd(&attr->life);
    1.52 +	psys_destroy_anm_rnd(&attr->size);
    1.53 +	psys_destroy_anm_rnd3(&attr->dir);
    1.54 +	psys_destroy_track3(&attr->grav);
    1.55 +
    1.56 +	if(attr->tex && unload_texture) {
    1.57 +		unload_texture(attr->tex, tex_cls);
    1.58 +	}
    1.59 +}
    1.60 +
    1.61 +void psys_eval_attr(struct psys_attributes *attr, anm_time_t tm)
    1.62 +{
    1.63 +	psys_eval_track3(&attr->spawn_range, tm);
    1.64 +	psys_eval_track(&attr->rate, tm);
    1.65 +	psys_eval_anm_rnd(&attr->life, tm);
    1.66 +	psys_eval_anm_rnd(&attr->size, tm);
    1.67 +	psys_eval_anm_rnd3(&attr->dir, tm);
    1.68 +	psys_eval_track3(&attr->grav, tm);
    1.69 +}
    1.70 +
    1.71 +int psys_load_attr(struct psys_attributes *attr, const char *fname)
    1.72 +{
    1.73 +	FILE *fp;
    1.74 +	int res;
    1.75 +
    1.76 +	if(!(fp = fopen(fname, "r"))) {
    1.77 +		fprintf(stderr, "%s: failed to read file: %s: %s\n", __func__, fname, strerror(errno));
    1.78 +		return -1;
    1.79 +	}
    1.80 +	res = psys_load_attr_stream(attr, fp);
    1.81 +	fclose(fp);
    1.82 +	return res;
    1.83 +}
    1.84 +
    1.85 +int psys_load_attr_stream(struct psys_attributes *attr, FILE *fp)
    1.86 +{
    1.87 +	return -1;	/* TODO */
    1.88 +}
    1.89 +
    1.90 +
    1.91 +int psys_save_attr(struct psys_attributes *attr, const char *fname)
    1.92 +{
    1.93 +	FILE *fp;
    1.94 +	int res;
    1.95 +
    1.96 +	if(!(fp = fopen(fname, "w"))) {
    1.97 +		fprintf(stderr, "%s: failed to write file: %s: %s\n", __func__, fname, strerror(errno));
    1.98 +		return -1;
    1.99 +	}
   1.100 +	res = psys_save_attr_stream(attr, fp);
   1.101 +	fclose(fp);
   1.102 +	return res;
   1.103 +}
   1.104 +
   1.105 +int psys_save_attr_stream(struct psys_attributes *attr, FILE *fp)
   1.106 +{
   1.107 +	return -1;	/* TODO */
   1.108 +}

     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/src/pattr.h	Tue Sep 27 07:42:54 2011 +0300
     2.3 @@ -0,0 +1,37 @@
     2.4 +#ifndef PATTR_H_
     2.5 +#define PATTR_H_
     2.6 +
     2.7 +#include "pstrack.h"
     2.8 +#include "rndval.h"
     2.9 +
    2.10 +struct psys_attributes {
    2.11 +	unsigned int tex;	/* OpenGL texture to use for the billboard */
    2.12 +
    2.13 +	struct psys_track3 spawn_range;	/* radius of emmiter */
    2.14 +	struct psys_track rate;			/* spawn rate particles per sec */
    2.15 +	struct psys_anm_rnd life;		/* particle life in seconds */
    2.16 +	struct psys_anm_rnd size;		/* base particle size */
    2.17 +	struct psys_anm_rnd3 dir;		/* particle shoot direction */
    2.18 +
    2.19 +	struct psys_track3 grav;		/* external force (usually gravity) */
    2.20 +
    2.21 +	float drag;	/* I don't think this needs to animate */
    2.22 +
    2.23 +	/* limits */
    2.24 +	int max_particles;
    2.25 +};
    2.26 +
    2.27 +void psys_texture_loader(unsigned int (*load)(const char*, void*), void (*unload)(unsigned int, void*), void *cls);
    2.28 +
    2.29 +int psys_init_attr(struct psys_attributes *attr);
    2.30 +void psys_destroy_attr(struct psys_attributes *attr);
    2.31 +
    2.32 +void psys_eval_attr(struct psys_attributes *attr, anm_time_t tm);
    2.33 +
    2.34 +int psys_load_attr(struct psys_attributes *attr, const char *fname);
    2.35 +int psys_load_attr_stream(struct psys_attributes *attr, FILE *fp);
    2.36 +
    2.37 +int psys_save_attr(struct psys_attributes *attr, const char *fname);
    2.38 +int psys_save_attr_stream(struct psys_attributes *attr, FILE *fp);
    2.39 +
    2.40 +#endif

     3.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     3.2 +++ b/src/psys_gl.h	Tue Sep 27 07:42:54 2011 +0300
     3.3 @@ -0,0 +1,14 @@
     3.4 +#ifndef PSYS_GL_H_
     3.5 +#define PSYS_GL_H_
     3.6 +
     3.7 +struct psys_particle;
     3.8 +struct psys_emitter;
     3.9 +
    3.10 +void psys_gl_draw_start(struct psys_emitter *em, void *cls);
    3.11 +void psys_gl_draw(struct psys_emitter *em, struct psys_particle *p, void *cls);
    3.12 +void psys_gl_draw_end(struct psys_emitter *em, void *cls);
    3.13 +
    3.14 +unsigned int psys_gl_load_texture(const char *fname, void *cls);
    3.15 +void psys_gl_unload_texture(unsigned int tex, void *cls);
    3.16 +
    3.17 +#endif	/* PSYS_GL_H_ */