def _update_rotation(cls):
'''
Internal method.
Update rotation, inverse acc in the middle,
stop rotation on target angle.
'''
if cls._target_angle == None:
return
ship = cls._api._ships['own']
orien = get_deg(ship.orien)
# check halfway through -> inv acc
path_length = cls._path_f(orien)
if not cls._inversed == False and path_length <= cls._path_length/2:
# inverse acc
ship.circular_acc = -ship.circular_acc
cls._inversed = True
# check target angle
if abs(orien - cls._target_angle) <= 1:
ship.orien = get_rad(cls._target_angle)
# finish rotation
ship.circular_acc = 0
ship.circular_speed = 0
cls._target_angle = None
def rotate_target(cls, angle: int):
'''
Rotate the ship to a target angle.
The ship will rotate all the way until reaching the target angle.
For example, if the orientation of the ship is 277° and the target
angle 233°, the ship will rotate of 44° counter-clockwise.
Parameters
---
`angle`: int
The target angle in degrees.
'''
if cls._target_angle == angle:
# given angle is already target angle
return
cls._target_angle = angle
cls._inversed = False
# select the smallest path to the angle
orien = get_deg(cls._api._ships['own'].orien)
acc_circular = cls._choose_rotation_path(orien)
cls._api._ships['own'].circular_acc = acc_circular
def __init__(self, team, pos, orien, speed=None, damage=None, _id=None):
super().__init__(Spec.DIM_BULLET, pos, surface=img_bullet, center=True)
self.team = team
# each bullet has a (~)unique id
if _id == None:
self.id = np.random.randint(0, 1000)
else:
self.id = _id
# rotate the bullet according to its orientation
self.rotate(get_deg(orien))
self.orien = orien
self.mask = self.get_mask()
if speed == None:
self.speed = Spec.SPEED_BULLET
else:
self.speed = speed
if damage == None:
self.damage = Spec.DAMAGE_BULLET
else:
self.damage = damage
def rotate_surf(self, angle: float):
'''
Rotate the ship's surface to a given angle (rad).
'''
# converts the angle into deg
angle = -get_deg(angle)
self.form.rotate(angle)
def get_orientation(cls):
'''
Return the orientation of the ship (degree).
The orientation is an angle, with:
0° : East
90° : South
180° : West
270° : North
'''
return get_deg(cls._api._ship['opp'].orien)
def rotate_angle(cls, angle: int):
'''
Rotate the ship of a given angle.
The ship will rotate of the given angle, so if the orientation
of the ship is 130° and the given angle -21°, the ship will rotate
of 21° counter-clockwise to reach 119°.
Parameters
---
`angle`: int
The angle of rotation in degrees, positive is clockwise,
negative is counter-clockwise.
'''
orien = get_deg(cls._api._ships['own'].orien)
target_angle = (orien + angle) % 360
if cls._target_angle == target_angle:
# given angle is already target angle
return
cls.rotate_target(target_angle)