return createAsteroid(size, x, y, rando.getInRange(-MAXVEL, MAXVEL),
rando.getInRange(-MAXVEL, MAXVEL));
}
protected Entity createAsteroid (Size sz, float x, float y, float vx, float vy) {
Entity ast = create(true);
ast.add(type, size, sprite, opos, pos, vel, spin, radius);
float side = sz.size;
int iidx = rando.getInt(8);
float ah = asteroids.height();
ImageLayer layer = graphics().createImageLayer(asteroids.subImage(iidx*ah, 0, ah, ah));