def test_cannon_moving():
cannon = Cannon(Position(50, 50))
old_position = cannon.position.to_rect()
cannon.move(90, 10)
assert old_position != cannon.position.to_rect()
class GameModel(SingletonInheritance):
"""
Based class for game model.
Hold structure for whole game
"""
GRAVITY = 9.81
class Memento:
"""
Inner class for memento of GameModel
"""
def __init__(self, pack):
self.__pack = pack
def __init__(self):
self.__objects = ObjectsPackage()
self.__commands = Commands(self)
self.__cannon = Cannon(Position(0, 0))
self.__score = 0
self.running = False
self.__gravity = self.GRAVITY
self.__changeManager = ChangeManager()
def model_builder(self, level_creator: LevelCreator):
"""
Create initial object in model
"""
self.__cannon = Cannon(Position(0, 150))
self.__objects.enemies = level_creator.create_enemies()
self.__objects.obstacles = level_creator.create_obstacles()
level_creator.music()
self.__change_notify()
def create_memento(self) -> Memento:
"""
Create new memento of current state of GameModel
:return: memento of actual state
"""
pack = self.__objects.create_pack()
memento = GameModel.Memento(pack)
return memento
def load_memento(self, memento: Memento) -> None:
"""
Change state of GameModel based on memento
:param memento: memento with GameModel state
"""
pack = memento._Memento__pack
self.__objects.set_pack(pack)
def get_all_game_objects(self) -> list:
"""
Return all game objects
:return:
"""
game_objects = self.__objects.get_all_objects()
game_objects.append(self.__cannon)
return game_objects
def __change_notify(self):
"""
Notify about model change (Observer)
:return:
"""
self.__changeManager.notify(self)
def __move_missiles(self) -> bool:
"""
Move all missiles
:return: True if some missile move, False otherwise
"""
for missile in self.__objects.missiles:
points = missile.move(self.gravity,
self.__objects.get_all_collidable_objects())
self.__score += points * self.cannon.state.points_multiple
if self.__objects.missiles:
return True
else:
return False
def __act_enemies(self) -> bool:
"""
Call move on all enemies in GameModel
:return: True if something change, False otherwise
"""
change = False
for enemy in self.__objects.enemies:
change = enemy.state.move() or change
return change
def __garbage_collector(self):
"""
Destroy all object which is dead or out of window
:return:
"""
self.__objects.missiles = [
missile for missile in self.__objects.missiles
if not missile.state.delete
]
self.__objects.enemies = [
enemy for enemy in self.__objects.enemies if not enemy.state.delete
]
self.__objects.obstacles = [
obstacle for obstacle in self.__objects.obstacles
if not obstacle.state.delete
]
def tick(self):
"""
One moment in time, do all movements
:return:
"""
changed = self.__commands.do_commands()
changed = self.__move_missiles() or changed
changed = self.__act_enemies() or changed
self.__garbage_collector()
if changed:
self.__change_notify()
def add_command(self, command: Command):
"""
Add command to Commands class
:param command:
:return:
"""
self.__commands.add_command(command)
def move_cannon(self, angle: float, distance: float):
"""
Move cannon
:param angle: angle of movement (90,-90)
:param distance: distance of move
"""
self.__cannon.move(angle, distance)
self.__change_notify()
def angle_cannon(self, angle: float):
"""
Angle cannon
:param angle: angle of move (+ up, - down)
:return:
"""
self.__cannon.angle(angle)
def shoot(self):
"""
Shoot missile from cannon
"""
self.__score -= self.__cannon.state.shoot_cost
missiles = self.__cannon.shoot()
self.__objects.missiles.extend(missiles)
def change_cannon_state(self) -> None:
"""
Change cannon state
"""
self.__cannon.change_state()
def change_strength(self, strength: float) -> None:
"""
Change strength of cannon shoot
:param strength: add this value to strength
"""
self.__cannon.strength += strength
self.__change_notify()
@property
def score(self) -> int:
"""
Getter of game score
:return: value of score
"""
return self.__score
@property
def cannon(self) -> Cannon:
"""
Getter of cannon object
:return: cannon object
"""
return self.__cannon
@property
def gravity(self) -> float:
"""
Getter of actual value of gravity
:return: value of gravity
"""
return self.__gravity
def change_gravity(self, gravity: float) -> None:
"""
Change value of gravity. Restriction 2 < new_value <
:param gravity:
:return:
"""
self.__gravity += gravity
if self.__gravity < 2:
self.__gravity = 2
if self.__gravity > 20:
self.__gravity = 20