def test_update__SAS():
sut = set_up_sluggish_player()
# start turning
sut.key_handler.on_key_press(key.RIGHT, None)
sut.update(1.0) # one 60 fps frame
sut.key_handler.on_key_release(key.RIGHT, None)
assert sut.rotation_speed == 15.0
assert eq_within_epsilon(sut.rotation, 7.5)
# engage SAS
sut.key_handler.on_key_press(key.DOWN, None)
sut.update(0.5) # stabilize for half a second
assert sut.rotation_speed == 7.5
assert eq_within_epsilon(sut.rotation, 13.12)
sut.key_handler.on_key_release(key.DOWN, None)
sut.update(0.5) # drift for half a second
assert sut.rotation_speed == 7.5
assert eq_within_epsilon(sut.rotation, 16.87)
sut.key_handler.on_key_press(key.DOWN, None)
sut.update(1.0) # stabilize for a full second
assert sut.rotation_speed == 0.0
assert eq_within_epsilon(sut.rotation, 20.62)
def test_update__turn_left():
sut = set_up_sluggish_player()
# turn left
sut.key_handler.on_key_press(key.LEFT, None)
sut.update(fps_to_s(60) * 1.5)
assert sut.rotation_speed == -0.375
assert eq_within_epsilon(sut.rotation, 359.9953, 0.0001)
sut.update(fps_to_s(60) * 58.5) # finish this second
sut.key_handler.on_key_release(key.LEFT, None)
assert sut.rotation_speed == -15
assert eq_within_epsilon(sut.rotation, 352.5)
sut.update(1.0) # one second
assert sut.rotation_speed == -15
assert eq_within_epsilon(sut.rotation, 337.5)
def test_update__turn_right():
sut = set_up_sluggish_player()
# turn right
sut.key_handler.on_key_press(key.RIGHT, None)
sut.update(fps_to_s(60)) # one 60 fps frame
assert sut.rotation_speed == 0.25
assert eq_within_epsilon(sut.rotation, 0.0021, 0.0001)
sut.update(fps_to_s(60) * 59) # finish this second
sut.key_handler.on_key_release(key.RIGHT, None)
assert sut.rotation_speed == 15.0
assert eq_within_epsilon(sut.rotation, 7.5)
sut.update(1.0) # one second
assert sut.rotation_speed == 15.0
assert eq_within_epsilon(sut.rotation, 22.5)
def test_update__thrust():
sut = set_up_sluggish_player()
# artificially set rotation
sut.rotation = 45.0
assert sut.velocity_x == 0.0
assert sut.velocity_y == 0.0
assert sut.x == 200.0
assert sut.y == 300.0
# engage thrust
sut.key_handler.on_key_press(key.UP, None)
sut.update(1.0)
assert eq_within_epsilon(sut.velocity_x, 7.08)
assert eq_within_epsilon(sut.velocity_y, 7.08)
assert eq_within_epsilon(sut.x, 203.54)
assert eq_within_epsilon(sut.y, 303.54)
# stop thrust and drift
sut.key_handler.on_key_release(key.UP, None)
sut.update(2.0)
assert eq_within_epsilon(sut.velocity_x, 7.08)
assert eq_within_epsilon(sut.velocity_y, 7.08)
assert eq_within_epsilon(sut.x, 217.68)
assert eq_within_epsilon(sut.y, 317.68)
# stop altogether
sut.rotation += 180.0
sut.key_handler.on_key_press(key.UP, None)
sut.update(1.0)
assert eq_within_epsilon(sut.velocity_x, 0.0)
assert eq_within_epsilon(sut.velocity_y, 0.0)
assert eq_within_epsilon(sut.x, 221.22)
assert eq_within_epsilon(sut.y, 321.22)
