nuclear@0: #ifndef PATTR_H_
nuclear@0: #define PATTR_H_
nuclear@0: 
nuclear@0: #include "pstrack.h"
nuclear@0: #include "rndval.h"
nuclear@0: 
nuclear@0: /* the particle attributes vary from 0 to 1 during its lifetime */
nuclear@0: struct psys_particle_attributes {
nuclear@0: 	struct psys_track3 color;
nuclear@0: 	struct psys_track alpha;
nuclear@0: 	struct psys_track size;
nuclear@0: };
nuclear@0: 
nuclear@0: struct psys_attributes {
nuclear@0: 	unsigned int tex;	/* OpenGL texture to use for the billboard */
nuclear@0: 
nuclear@0: 	struct psys_track3 spawn_range;	/* radius of emmiter */
nuclear@0: 	struct psys_track rate;			/* spawn rate particles per sec */
nuclear@0: 	struct psys_anm_rnd life;		/* particle life in seconds */
nuclear@0: 	struct psys_anm_rnd size;		/* base particle size */
nuclear@0: 	struct psys_anm_rnd3 dir;		/* particle shoot direction */
nuclear@0: 
nuclear@0: 	struct psys_track3 grav;		/* external force (usually gravity) */
nuclear@0: 	float drag;	/* I don't think this needs to animate */
nuclear@0: 
nuclear@0: 	/* particle attributes */
nuclear@0: 	struct psys_particle_attributes part_attr;
nuclear@0: 
nuclear@0: 	/* limits */
nuclear@0: 	int max_particles;
nuclear@0: };
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: extern "C" {
nuclear@0: #endif
nuclear@0: 
nuclear@0: void psys_texture_loader(unsigned int (*load)(const char*, void*), void (*unload)(unsigned int, void*), void *cls);
nuclear@0: 
nuclear@0: struct psys_attributes *psys_create_attr(void);
nuclear@0: void psys_free_attr(struct psys_attributes *attr);
nuclear@0: 
nuclear@0: int psys_init_attr(struct psys_attributes *attr);
nuclear@0: void psys_destroy_attr(struct psys_attributes *attr);
nuclear@0: 
nuclear@0: /* copies particle system attributes src to dest
nuclear@0:  * XXX: dest must have been initialized first
nuclear@0:  */
nuclear@0: void psys_copy_attr(struct psys_attributes *dest, const struct psys_attributes *src);
nuclear@0: 
nuclear@0: void psys_eval_attr(struct psys_attributes *attr, anm_time_t tm);
nuclear@0: 
nuclear@0: int psys_load_attr(struct psys_attributes *attr, const char *fname);
nuclear@0: int psys_load_attr_stream(struct psys_attributes *attr, FILE *fp);
nuclear@0: 
nuclear@0: int psys_save_attr(const struct psys_attributes *attr, const char *fname);
nuclear@0: int psys_save_attr_stream(const struct psys_attributes *attr, FILE *fp);
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: }
nuclear@0: #endif
nuclear@0: 
nuclear@0: #endif	/* PATTR_H_ */