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First solution in Clear category for The Lancers by tom-tom
from contextlib import suppress
class Warrior:
health = 50
attack = 5
next_unit = None
def hit_by(self, enemy_attack):
self.health -= enemy_attack
return enemy_attack
def strike(self, enemy):
enemy.hit_by(self.attack)
@property
def is_alive(self):
return self.health > 0
class Knight(Warrior):
attack = 7
class Defender(Warrior):
health = 60
attack = 3
defense = 2
def hit_by(self, enemy_attack):
damage = max(enemy_attack - self.defense, 0)
self.health -= damage
return damage
class Vampire(Warrior):
health = 40
attack = 4
vampirism = 0.5
def strike(self, enemy):
damage = enemy.hit_by(self.attack)
self.health += int(damage * self.vampirism)
class Lancer(Warrior):
health = 60
attack = 6
pierce = 0.5
def strike(self, enemy):
damage = enemy.hit_by(self.attack)
with suppress(AttributeError):
enemy.next_unit.hit_by(int(damage * self.pierce))
def fight(unit_1, unit_2):
attacker, defender = unit_1, unit_2
while True:
attacker.strike(defender)
if not defender.is_alive:
return attacker is unit_1
attacker, defender = defender, attacker
class Army(list):
def add_units(self, unit_cls, n):
self.extend(unit_cls() for _ in range(n))
def fighter(self):
return next(filter(lambda x: x.is_alive, self))
def assign_next(self):
for a, b in zip(self, self[1:]):
a.next_unit = b
class Battle:
def fight(self, army1, army2):
army1.assign_next()
army2.assign_next()
while True:
try:
unit1 = army1.fighter()
except StopIteration:
return False
try:
unit2 = army2.fighter()
except StopIteration:
return True
fight(unit1, unit2)
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
#fight tests
chuck = Warrior()
bruce = Warrior()
carl = Knight()
dave = Warrior()
mark = Warrior()
bob = Defender()
mike = Knight()
rog = Warrior()
lancelot = Defender()
eric = Vampire()
adam = Vampire()
richard = Defender()
ogre = Warrior()
freelancer = Lancer()
vampire = Vampire()
assert fight(chuck, bruce) == True
assert fight(dave, carl) == False
assert chuck.is_alive == True
assert bruce.is_alive == False
assert carl.is_alive == True
assert dave.is_alive == False
assert fight(carl, mark) == False
assert carl.is_alive == False
assert fight(bob, mike) == False
assert fight(lancelot, rog) == True
assert fight(eric, richard) == False
assert fight(ogre, adam) == True
assert fight(freelancer, vampire) == True
assert freelancer.is_alive == True
#battle tests
my_army = Army()
my_army.add_units(Defender, 2)
my_army.add_units(Vampire, 2)
my_army.add_units(Lancer, 4)
my_army.add_units(Warrior, 1)
enemy_army = Army()
enemy_army.add_units(Warrior, 2)
enemy_army.add_units(Lancer, 2)
enemy_army.add_units(Defender, 2)
enemy_army.add_units(Vampire, 3)
army_3 = Army()
army_3.add_units(Warrior, 1)
army_3.add_units(Lancer, 1)
army_3.add_units(Defender, 2)
army_4 = Army()
army_4.add_units(Vampire, 3)
army_4.add_units(Warrior, 1)
army_4.add_units(Lancer, 2)
battle = Battle()
assert battle.fight(my_army, enemy_army) == True
assert battle.fight(army_3, army_4) == False
print("Coding complete? Let's try tests!")
May 26, 2019
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