nuclear@0: #ifndef LIBPSYS_H_
nuclear@0: #define LIBPSYS_H_
nuclear@0: 
nuclear@0: #include <vmath/vmath.h>
nuclear@0: #include <anim/anim.h>
nuclear@0: #include "rndval.h"
nuclear@0: #include "pattr.h"
nuclear@0: 
nuclear@0: struct psys_particle;
nuclear@0: struct psys_emitter;
nuclear@0: 
nuclear@0: typedef int (*psys_spawn_func_t)(struct psys_emitter*, struct psys_particle*, void*);
nuclear@0: typedef void (*psys_update_func_t)(struct psys_emitter*, struct psys_particle*, float, float, void*);
nuclear@0: 
nuclear@0: typedef void (*psys_draw_func_t)(const struct psys_emitter*, const struct psys_particle*, void*);
nuclear@0: typedef void (*psys_draw_start_func_t)(const struct psys_emitter*, void*);
nuclear@0: typedef void (*psys_draw_end_func_t)(const struct psys_emitter*, void*);
nuclear@0: 
nuclear@0: 
nuclear@0: struct psys_plane {
nuclear@0: 	plane_t p;
nuclear@0: 	float elasticity;
nuclear@0: 	struct psys_plane *next;
nuclear@0: };
nuclear@0: 
nuclear@0: 
nuclear@0: struct psys_emitter {
nuclear@0: 	struct anm_node prs;
nuclear@0: 	vec3_t cur_pos;
nuclear@0: 
nuclear@0: 	struct psys_attributes attr;
nuclear@0: 
nuclear@0: 	/* list of active particles */
nuclear@0: 	struct psys_particle *plist;
nuclear@0: 	int pcount;	/* number of active particles */
nuclear@0: 
nuclear@0: 	/* list of collision planes */
nuclear@0: 	struct psys_plane *planes;
nuclear@0: 
nuclear@0: 	/* custom spawn closure */
nuclear@0: 	void *spawn_cls;
nuclear@0: 	psys_spawn_func_t spawn;
nuclear@0: 
nuclear@0: 	/* custom particle update closure */
nuclear@0: 	void *upd_cls;
nuclear@0: 	psys_update_func_t update;
nuclear@0: 
nuclear@0: 	/* custom draw closure */
nuclear@0: 	void *draw_cls;
nuclear@0: 	psys_draw_func_t draw;
nuclear@0: 	psys_draw_start_func_t draw_start;
nuclear@0: 	psys_draw_end_func_t draw_end;
nuclear@0: 
nuclear@0: 	float spawn_acc;	/* partial spawn accumulator */
nuclear@0: 	float last_update;	/* last update time (to calc dt) */
nuclear@0: };
nuclear@0: 
nuclear@0: 
nuclear@0: struct psys_particle {
nuclear@0: 	vec3_t pos, vel;
nuclear@0: 	float life, max_life;
nuclear@0: 	float base_size;
nuclear@0: 
nuclear@0: 	struct psys_particle_attributes *pattr;
nuclear@0: 
nuclear@0: 	/* current particle attr values calculated during update */
nuclear@0: 	vec3_t color;
nuclear@0: 	float alpha, size;
nuclear@0: 
nuclear@0: 	struct psys_particle *next;
nuclear@0: };
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: extern "C" {
nuclear@0: #endif
nuclear@0: 
nuclear@0: struct psys_emitter *psys_create(void);
nuclear@0: void psys_free(struct psys_emitter *em);
nuclear@0: 
nuclear@0: int psys_init(struct psys_emitter *em);
nuclear@0: void psys_destroy(struct psys_emitter *em);
nuclear@0: 
nuclear@0: /* set properties */
nuclear@0: void psys_set_pos(struct psys_emitter *em, vec3_t pos, float tm);
nuclear@0: void psys_set_rot(struct psys_emitter *em, quat_t rot, float tm);
nuclear@0: void psys_set_pivot(struct psys_emitter *em, vec3_t pivot);
nuclear@0: 
nuclear@0: vec3_t psys_get_pos(struct psys_emitter *em, float tm);
nuclear@0: quat_t psys_get_rot(struct psys_emitter *em, float tm);
nuclear@0: vec3_t psys_get_pivot(struct psys_emitter *em);
nuclear@0: 
nuclear@0: void psys_clear_collision_planes(struct psys_emitter *em);
nuclear@0: int psys_add_collision_plane(struct psys_emitter *em, plane_t plane, float elast);
nuclear@0: 
nuclear@0: void psys_add_particle(struct psys_emitter *em, struct psys_particle *p);
nuclear@0: 
nuclear@0: void psys_spawn_func(struct psys_emitter *em, psys_spawn_func_t func, void *cls);
nuclear@0: void psys_update_func(struct psys_emitter *em, psys_update_func_t func, void *cls);
nuclear@0: void psys_draw_func(struct psys_emitter *em, psys_draw_func_t draw,
nuclear@0: 		psys_draw_start_func_t start, psys_draw_end_func_t end, void *cls);
nuclear@0: 
nuclear@0: /* update and render */
nuclear@0: 
nuclear@0: void psys_update(struct psys_emitter *em, float tm);
nuclear@0: void psys_draw(const struct psys_emitter *em);
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: }
nuclear@0: #endif
nuclear@0: 
nuclear@0: #endif	/* LIBPSYS_H_ */