def fire(self, target):
"""
Returns an AlienBullet with a trajectory towards the target's'
current location.
"""
angle = math.atan2(target.center.y - self.center.y,
target.center.x - self.center.x)
angle = angle * 180 / math.pi #convert to degrees
# put the origin point of the bullet far enough
# away it does not photon itself.
radius_adjust = self.texture.height / 2 * 1.25
laser_barrel_end = Point(radius_adjust * Velocity.cosine(angle),
radius_adjust * Velocity.sine(angle))
laser_barrel_end = laser_barrel_end + self.center
p = Point(laser_barrel_end.x, laser_barrel_end.y)
v = Velocity(self.velocity.dx, self.velocity.dy)
return AlienBullet(p, angle, v)
