def test_vector_set_angle(self):
i = Vector2D(1.0, 0)
j = Vector2D(0, 1.0)
a = random.random() * 360.0
k = Vector2D.from_angle(a)
self.assertAlmostEqual(Vector2D.from_angle(0), i, 5, "failed to set angle")
self.assertAlmostEqual(Vector2D.from_angle(90.0), j, 5, "failed to set angle")
self.assertAlmostEqual(Vector2D.from_angle(180.0), -i, 5, "failed to set angle")
self.assertAlmostEqual(Vector2D.from_angle(270.0), -j, 5, "failed to set angle")
self.assertAlmostEqual(k.angle, a, 5, "failed to set angle")
def onMouseDown(self, event):
if event.button == 1:
num_puffs = 8.0
for i in range(int(num_puffs) + 1):
theta = 0 + (360 * (i / num_puffs))
e = PuffEmitter(2000)
e.position = Vector2D(Game.camera_to_world(event.pos))
e.velocity = Vector2D.from_angle(theta) * -180.0
self.add(e)
def __init__(self, image, lifetime):
super(Particle, self).__init__(image)
self.__velocity = Vector2D.from_angle(random.randrange(80, 100)) * -1.35
sheet = ImageSheet(ResourceLoader.load('data//puffs.png'), (32, 32))
puff = [(sheet[3], int(lifetime * 0.2)),
(sheet[2], int(lifetime * 0.1)),
(sheet[1], int(lifetime * 0.3)),
(sheet[0], int(lifetime * 2.0))]
self.animation = Animation('puff', puff)
self.add(self.animation)
self.add(DestroyAfter(lifetime))
def update(self, milliseconds=0):
self.angle += self.angular_velocity * milliseconds / 16.66
offset = Vector2D.from_angle(self.angle) * self.radius
# Rotate about the local 0, 0
self.game_object.transform.local_position = offset
def forward(self):
return Vector2D.from_angle(self.rotation)