def test_it_can_add_a_keyframes_to_a_sequence():
s = a.Sequence()
k1 = a.KeyFrame()
k2 = a.KeyFrame()
some_callback = lambda: 1
s.add_keyframes((0, k1), (1, k2, some_callback))
assert id(s[0].frame) == id(k1)
assert id(s[1].frame) == id(k2)
assert s[1].callback == some_callback
def test_it_can_generate_points_in_time_from_a_sequence():
s = a.Sequence()
k1 = a.KeyFrame(position=(10, 10), angle=0, height=100)
k2 = a.KeyFrame(position=(10, 100), angle=100, height=200)
s.add_keyframes((0, k1), (1, k2))
pits = s._to_point_in_times()
assert len(pits) == 3
assert list(pits.keys()) == ['position', 'angle', 'height']
assert pits['position'].point_at(.5) == (10, 55)
assert pits['angle'].point_at(.5) == 50
assert pits['height'].point_at(.5) == 150
assert pits['height'].point_at(1) == 200
assert pits['height'].point_at(10) == 200
def test_it_can_animate_a_sprite_over_time():
s = a.Sequence()
k1 = a.KeyFrame(position=(10, 10), angle=0, height=100)
k2 = a.KeyFrame(position=(10, 100), angle=100, height=200)
s.add_keyframes((0, k1), (1, k2))
inst = sprite_instance()
anim = a.Animator(inst, s)
anim.blip(.5)
assert inst.position == (10, 55)
assert not anim.finished
anim.blip(1)
assert inst.position == (10, 100)
assert anim.finished
def test_it_can_play_animations():
s = a.Sequence()
k1 = a.KeyFrame(position=(10, 10))
k2 = a.KeyFrame(position=(10, 100))
s.add_keyframes((0, k1), (1, k2))
inst = arcade.Sprite()
manager = a.AnimationManager()
manager.fire(inst, s)
assert len(manager.animations) == 1
manager._blip(.5)
assert len(manager.animations) == 1
assert inst.position == (10, 55)
manager._blip(2)
assert len(manager.animations) == 0
assert inst.position == (10, 100)
def test_it_can_execute_a_callback_at_a_given_time():
s = a.Sequence()
k1 = a.KeyFrame(position=(10, 10))
k2 = a.KeyFrame(position=(10, 100))
s.add_keyframes((0, k1), (1, k2))
callback = mock.Mock().some_callback
s.add_callback(.5, callback)
inst = sprite_instance()
anim = a.Animator(inst, s)
anim.blip(.4)
callback.assert_not_called()
anim.blip(.2)
callback.assert_called_once()
anim.blip(.4)
callback.assert_called_once()
assert not anim._upcoming_callback
def test_it_can_make_a_sequence_from_keyframe():
proxy = a.AnimationManagerProxy(arcade.Sprite())
seq = proxy._sequence_from_keyframe(a.KeyFrame(position=(100, 400)),
duration=10,
callback=lambda: None,
loop=True)
assert seq.loop
assert seq.total_time == 10
assert seq.callbacks[10]
assert len(seq) == 2
assert seq[10].frame.position == (100, 400)
def test_it_can_add_a_keyframe_to_a_sequence():
s = a.Sequence()
k = a.KeyFrame()
s.add_keyframe(0, k)
assert id(s[0].frame) == id(k)
def make_sequence():
s = a.Sequence()
k1 = a.KeyFrame(position=(10, 10))
k2 = a.KeyFrame(position=(10, 100))
s.add_keyframes((0, k1), (1, k2))
return s
