1 #ifndef PATTR_H_

2 #define PATTR_H_

3

4 #include "pstrack.h"

5 #include "rndval.h"

6

7 /* the particle attributes vary from 0 to 1 during its lifetime */

8 struct psys_particle_attributes {

9 struct psys_track3 color;

10 struct psys_track alpha;

11 struct psys_track size;

12 };

13

14 struct psys_attributes {

15 unsigned int tex; /* OpenGL texture to use for the billboard */

16

17 struct psys_track3 spawn_range; /* radius of emmiter */

18 struct psys_track rate; /* spawn rate particles per sec */

19 struct psys_anm_rnd life; /* particle life in seconds */

20 struct psys_anm_rnd size; /* base particle size */

21 struct psys_anm_rnd3 dir; /* particle shoot direction */

22

23 struct psys_track3 grav; /* external force (usually gravity) */

24 float drag; /* I don't think this needs to animate */

25

26 /* particle attributes */

27 struct psys_particle_attributes part_attr;

28

29 /* limits */

30 int max_particles;

31 };

32

33 void psys_texture_loader(unsigned int (*load)(const char*, void*), void (*unload)(unsigned int, void*), void *cls);

34

35 int psys_init_attr(struct psys_attributes *attr);

36 void psys_destroy_attr(struct psys_attributes *attr);

37

38 void psys_eval_attr(struct psys_attributes *attr, anm_time_t tm);

39

40 int psys_load_attr(struct psys_attributes *attr, const char *fname);

41 int psys_load_attr_stream(struct psys_attributes *attr, FILE *fp);

42

43 int psys_save_attr(struct psys_attributes *attr, const char *fname);

44 int psys_save_attr_stream(struct psys_attributes *attr, FILE *fp);

45

46 #endif