def reset(self):
self.rect.center = CENTER
self.speed = 10
if random.random() < 0.5:
self.orientation = Vector2.Right()
else:
self.orientation = Vector2.Left()
def calc_bounce_angle(self, pos):
pos = Vector2(pos)
ball_pos = Vector2(self.ball.rect.center)
delta = pos.y - ball_pos.y
delta = min(delta, 55) if delta > 0 else max(delta, -55)
if ball_pos.x < pos.x: # Bounces on right paddle
result = Vector2.Left()
result.theta = pi + delta * pi / 200
else:
result = Vector2.Right()
result.theta = -delta * pi / 200
return result
def test_create_unitary_axis_vectors_left():
left = Vector2.Left()
assert left.x == -1
assert left.y == 0