nuclear@67: #include <stdlib.h>
nuclear@67: #include "rndval.h"
nuclear@67: 
nuclear@67: int psys_init_anm_rnd(struct psys_anm_rnd *r)
nuclear@67: {
nuclear@67: 	if(psys_init_track(&r->value) == -1) {
nuclear@67: 		return -1;
nuclear@67: 	}
nuclear@67: 	if(psys_init_track(&r->range) == -1) {
nuclear@67: 		psys_destroy_track(&r->value);
nuclear@67: 		return -1;
nuclear@67: 	}
nuclear@67: 	return 0;
nuclear@67: }
nuclear@67: 
nuclear@67: void psys_destroy_anm_rnd(struct psys_anm_rnd *r)
nuclear@67: {
nuclear@67: 	psys_destroy_track(&r->value);
nuclear@67: 	psys_destroy_track(&r->range);
nuclear@67: }
nuclear@67: 
nuclear@67: int psys_init_anm_rnd3(struct psys_anm_rnd3 *r)
nuclear@67: {
nuclear@67: 	if(psys_init_track3(&r->value) == -1) {
nuclear@67: 		return -1;
nuclear@67: 	}
nuclear@67: 	if(psys_init_track3(&r->range) == -1) {
nuclear@67: 		psys_destroy_track3(&r->value);
nuclear@67: 		return -1;
nuclear@67: 	}
nuclear@67: 	return 0;
nuclear@67: }
nuclear@67: 
nuclear@67: void psys_destroy_anm_rnd3(struct psys_anm_rnd3 *r)
nuclear@67: {
nuclear@67: 	psys_destroy_track3(&r->value);
nuclear@67: 	psys_destroy_track3(&r->range);
nuclear@67: }
nuclear@67: 
nuclear@67: 
nuclear@67: void psys_set_rnd(struct psys_rnd *r, float val, float range)
nuclear@67: {
nuclear@67: 	r->value = val;
nuclear@67: 	r->range = range;
nuclear@67: }
nuclear@67: 
nuclear@67: void psys_set_rnd3(struct psys_rnd3 *r, vec3_t val, vec3_t range)
nuclear@67: {
nuclear@67: 	r->value = val;
nuclear@67: 	r->range = range;
nuclear@67: }
nuclear@67: 
nuclear@67: void psys_set_anm_rnd(struct psys_anm_rnd *r, anm_time_t tm, float val, float range)
nuclear@67: {
nuclear@67: 	psys_set_value(&r->value, tm, val);
nuclear@67: 	psys_set_value(&r->range, tm, range);
nuclear@67: }
nuclear@67: 
nuclear@67: void psys_set_anm_rnd3(struct psys_anm_rnd3 *r, anm_time_t tm, vec3_t val, vec3_t range)
nuclear@67: {
nuclear@67: 	psys_set_value3(&r->value, tm, val);
nuclear@67: 	psys_set_value3(&r->range, tm, range);
nuclear@67: }
nuclear@67: 
nuclear@67: 
nuclear@67: float psys_eval_rnd(struct psys_rnd *r)
nuclear@67: {
nuclear@67: 	return r->value + r->range * (float)rand() / (float)RAND_MAX - 0.5 * r->range;
nuclear@67: }
nuclear@67: 
nuclear@67: vec3_t psys_eval_rnd3(struct psys_rnd3 *r)
nuclear@67: {
nuclear@67: 	vec3_t res;
nuclear@67: 	res.x = r->value.x + r->range.x * (float)rand() / (float)RAND_MAX - 0.5 * r->range.x;
nuclear@67: 	res.y = r->value.y + r->range.y * (float)rand() / (float)RAND_MAX - 0.5 * r->range.y;
nuclear@67: 	res.z = r->value.z + r->range.z * (float)rand() / (float)RAND_MAX - 0.5 * r->range.z;
nuclear@67: 	return res;
nuclear@67: }
nuclear@67: 
nuclear@67: 
nuclear@67: float psys_eval_anm_rnd(struct psys_anm_rnd *r, anm_time_t tm)
nuclear@67: {
nuclear@67: 	struct psys_rnd tmp;
nuclear@67: 	if(tm == ANM_TIME_INVAL) {
nuclear@67: 		tmp.value = psys_get_cur_value(&r->value);
nuclear@67: 		tmp.range = psys_get_cur_value(&r->range);
nuclear@67: 	} else {
nuclear@67: 		tmp.value = psys_get_value(&r->value, tm);
nuclear@67: 		tmp.range = psys_get_value(&r->range, tm);
nuclear@67: 	}
nuclear@67: 	return psys_eval_rnd(&tmp);
nuclear@67: }
nuclear@67: 
nuclear@67: vec3_t psys_eval_anm_rnd3(struct psys_anm_rnd3 *r, anm_time_t tm)
nuclear@67: {
nuclear@67: 	struct psys_rnd3 tmp;
nuclear@67: 	if(tm == ANM_TIME_INVAL) {
nuclear@67: 		tmp.value = psys_get_cur_value3(&r->value);
nuclear@67: 		tmp.range = psys_get_cur_value3(&r->range);
nuclear@67: 	} else {
nuclear@67: 		tmp.value = psys_get_value3(&r->value, tm);
nuclear@67: 		tmp.range = psys_get_value3(&r->range, tm);
nuclear@67: 	}
nuclear@67: 	return psys_eval_rnd3(&tmp);
nuclear@67: }