void BulletPhysicsServer::area_clear_shapes(RID p_area) {
AreaBullet *area = area_owner.get(p_area);
ERR_FAIL_COND(!area);
for (int i = area->get_shape_count(); 0 < i; --i)
area->remove_shape(0);
}
int BulletPhysicsServer::area_get_shape_count(RID p_area) const {
AreaBullet *area = area_owner.get(p_area);
ERR_FAIL_COND_V(!area, 0);
return area->get_shape_count();
}