void register_move_on(int ob_type, move_on_func method)
void play_sound_map(int8_t sound_type, object *emitter, int dir, const char *action)
method_ret common_pre_ob_move_on(object *trap, object *victim, object *originator)
#define SOUND_TYPE_GROUND
void common_post_ob_move_on(object *trap, object *victim, object *originator)