const char *(*get_resource_name) (void *resource_id);
e_surf_action_state_t(*action_get_state) (surf_action_t action);
+ double (*action_get_start_time) (surf_action_t action);
+ double (*action_get_finish_time) (surf_action_t action);
void (*action_use) (surf_action_t action);
int (*action_free) (surf_action_t action);
void (*action_cancel) (surf_action_t action);