用 Python 写个坦克大战

发表于:2020-6-28 10:22  作者:justdopython   来源:博客园

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  坦克大战是一款策略类的平面射击游戏,于 1985 年由 Namco 游戏公司发布,尽管时至今日已经有了很多衍生类的游戏,但这款游戏仍然受到了相当一部分人的欢迎,本文我们看一下如何使用 Python 来实现这款游戏,游戏实现主要用到的 Python 库为 pygame。
  简介
  坦克大战的组成主要包括:场景、坦克、子弹、食物、大本营,其本质就是一个塔防类的游戏,游戏目标为:守住大本营并且消灭敌方坦克,通常支持单双人模式,下面我们来看一下具体实现。
  实现
  首先,我们来实现游戏场景,场景的组成主要包括:石头墙、钢墙、冰、河流、树、地图,我们暂时做两个关卡,代码实现如下:
# 石头墙
class Brick(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.brick = pygame.image.load('images/scene/brick.png')
self.rect = self.brick.get_rect()
self.being = False

# 钢墙
class Iron(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.iron = pygame.image.load('images/scene/iron.png')
self.rect = self.iron.get_rect()
self.being = False

# 冰
class Ice(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.ice = pygame.image.load('images/scene/ice.png')
self.rect = self.ice.get_rect()
self.being = False

# 河流
class River(pygame.sprite.Sprite):
def __init__(self, kind=None):
pygame.sprite.Sprite.__init__(self)
if kind is None:
self.kind = random.randint(0, 1)
self.rivers = ['images/scene/river1.png', 'images/scene/river2.png']
self.river = pygame.image.load(self.rivers[self.kind])
self.rect = self.river.get_rect()
self.being = False

# 树
class Tree(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.tree = pygame.image.load('images/scene/tree.png')
self.rect = self.tree.get_rect()
self.being = False

# 地图
class Map():
def __init__(self, stage):
self.brickGroup = pygame.sprite.Group()
self.ironGroup  = pygame.sprite.Group()
self.iceGroup = pygame.sprite.Group()
self.riverGroup = pygame.sprite.Group()
self.treeGroup = pygame.sprite.Group()
if stage == 1:
self.stage1()
elif stage == 2:
self.stage2()
# 关卡一
def stage1(self):
for x in [2, 3, 6, 7, 18, 19, 22, 23]:
for y in [2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 20, 21, 22, 23]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [10, 11, 14, 15]:
for y in [2, 3, 4, 5, 6, 7, 8, 11, 12, 15, 16, 17, 18, 19, 20]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [4, 5, 6, 7, 18, 19, 20, 21]:
for y in [13, 14]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [12, 13]:
for y in [16, 17]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x, y in [(11, 23), (12, 23), (13, 23), (14, 23), (11, 24), (14, 24), (11, 25), (14, 25)]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x, y in [(0, 14), (1, 14), (12, 6), (13, 6), (12, 7), (13, 7), (24, 14), (25, 14)]:
self.iron = Iron()
self.iron.rect.left, self.iron.rect.top = 3 + x * 24, 3 + y * 24
self.iron.being = True
self.ironGroup.add(self.iron)
# 关卡二
def stage2(self):
for x in [2, 3, 6, 7, 18, 19, 22, 23]:
for y in [2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 20, 21, 22, 23]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [10, 11, 14, 15]:
for y in [2, 3, 4, 5, 6, 7, 8, 11, 12, 15, 16, 17, 18, 19, 20]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [4, 5, 6, 7, 18, 19, 20, 21]:
for y in [13, 14]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x in [12, 13]:
for y in [16, 17]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x, y in [(11, 23), (12, 23), (13, 23), (14, 23), (11, 24), (14, 24), (11, 25), (14, 25)]:
self.brick = Brick()
self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
self.brick.being = True
self.brickGroup.add(self.brick)
for x, y in [(0, 14), (1, 14), (12, 6), (13, 6), (12, 7), (13, 7), (24, 14), (25, 14)]:
self.iron = Iron()
self.iron.rect.left, self.iron.rect.top = 3 + x * 24, 3 + y * 24
self.iron.being = True
self.ironGroup.add(self.iron)
def protect_home(self):
for x, y in [(11, 23), (12, 23), (13, 23), (14, 23), (11, 24), (14, 24), (11, 25), (14, 25)]:
self.iron = Iron()
self.iron.rect.left, self.iron.rect.top = 3 + x * 24, 3 + y * 24
self.iron.being = True
self.ironGroup.add(self.iron)
  我们接着看大本营的实现,大本营的实现相对比较简单,其本质就是一个标识物,代码实现如下:
class Home(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.homes = ['images/home/home1.png', 'images/home/home2.png', 'images/home/home_destroyed.png']
self.home = pygame.image.load(self.homes[0])
self.rect = self.home.get_rect()
self.rect.left, self.rect.top = (3 + 12 * 24, 3 + 24 * 24)
self.alive = True
# 大本营置为摧毁状态
def set_dead(self):
self.home = pygame.image.load(self.homes[-1])
self.alive = False
  再接着看食物的实现,食物主要用来提升坦克能力,如:坦克升级、增加生命等,代码实现如下:
# 食物类
class Food(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
# 消灭当前所有敌人
self.food_boom = 'images/food/food_boom.png'
# 当前所有敌人静止一段时间
self.food_clock = 'images/food/food_clock.png'
# 使得坦克子弹可碎钢板
self.food_gun = 'images/food/food_gun.png'
# 使得大本营的墙变为钢板
self.food_iron = 'images/food/food_gun.png'
# 坦克获得一段时间的保护罩
self.food_protect = 'images/food/food_protect.png'
# 坦克升级
self.food_star = 'images/food/food_star.png'
# 坦克生命 + 1
self.food_tank = 'images/food/food_tank.png'
# 所有食物
self.foods = [self.food_boom, self.food_clock, self.food_gun, self.food_iron, self.food_protect, self.food_star, self.food_tank]
self.kind = None
self.food = None
self.rect = None
# 是否存在
self.being = False
# 存在时间
self.time = 1000
# 生成食物
def generate(self):
self.kind = random.randint(0, 6)
self.food = pygame.image.load(self.foods[self.kind]).convert_alpha()
self.rect = self.food.get_rect()
self.rect.left, self.rect.top = random.randint(100, 500), random.randint(100, 500)
self.being = True
  再接着看坦克的实现,坦克包括我方坦克和敌方坦克,我方坦克由玩家自己控制移动、射击等操作,敌方坦克实现自动移动、射击等操作,代码实现如下:
# 我方坦克类
class myTank(pygame.sprite.Sprite):
def __init__(self, player):
pygame.sprite.Sprite.__init__(self)
# 玩家编号(1/2)
self.player = player
# 不同玩家用不同的坦克(不同等级对应不同的图)
if player == 1:
self.tanks = ['images/myTank/tank_T1_0.png', 'images/myTank/tank_T1_1.png', 'images/myTank/tank_T1_2.png']
elif player == 2:
self.tanks = ['images/myTank/tank_T2_0.png', 'images/myTank/tank_T2_1.png', 'images/myTank/tank_T2_2.png']
else:
raise ValueError('myTank class -> player value error.')
# 坦克等级(初始0)
self.level = 0
# 载入(两个tank是为了轮子特效)
self.tank = pygame.image.load(self.tanks[self.level]).convert_alpha()
self.tank_0 = self.tank.subsurface((0, 0), (48, 48))
self.tank_1 = self.tank.subsurface((48, 0), (48, 48))
self.rect = self.tank_0.get_rect()
# 保护罩
self.protected_mask = pygame.image.load('images/others/protect.png').convert_alpha()
self.protected_mask1 = self.protected_mask.subsurface((0, 0), (48, 48))
self.protected_mask2 = self.protected_mask.subsurface((48, 0), (48, 48))
# 坦克方向
self.direction_x, self.direction_y = 0, -1
# 不同玩家的出生位置不同
if player == 1:
self.rect.left, self.rect.top = 3 + 24 * 8, 3 + 24 * 24
elif player == 2:
self.rect.left, self.rect.top = 3 + 24 * 16, 3 + 24 * 24
else:
raise ValueError('myTank class -> player value error.')
# 坦克速度
self.speed = 3
# 是否存活
self.being = True
# 有几条命
self.life = 3
# 是否处于保护状态
self.protected = False
# 子弹
self.bullet = Bullet()
# 射击
def shoot(self):
self.bullet.being = True
self.bullet.turn(self.direction_x, self.direction_y)
if self.direction_x == 0 and self.direction_y == -1:
self.bullet.rect.left = self.rect.left + 20
self.bullet.rect.bottom = self.rect.top - 1
elif self.direction_x == 0 and self.direction_y == 1:
self.bullet.rect.left = self.rect.left + 20
self.bullet.rect.top = self.rect.bottom + 1
elif self.direction_x == -1 and self.direction_y == 0:
self.bullet.rect.right = self.rect.left - 1
self.bullet.rect.top = self.rect.top + 20
elif self.direction_x == 1 and self.direction_y == 0:
self.bullet.rect.left = self.rect.right + 1
self.bullet.rect.top = self.rect.top + 20
else:
raise ValueError('myTank class -> direction value error.')
if self.level == 0:
self.bullet.speed = 8
self.bullet.stronger = False
elif self.level == 1:
self.bullet.speed = 12
self.bullet.stronger = False
elif self.level == 2:
self.bullet.speed = 12
self.bullet.stronger = True
elif self.level == 3:
self.bullet.speed = 16
self.bullet.stronger = True
else:
raise ValueError('myTank class -> level value error.')
# 等级提升
def up_level(self):
if self.level < 3:
self.level += 1
try:
self.tank = pygame.image.load(self.tanks[self.level]).convert_alpha()
except:
self.tank = pygame.image.load(self.tanks[-1]).convert_alpha()
# 等级降低
def down_level(self):
if self.level > 0:
self.level -= 1
self.tank = pygame.image.load(self.tanks[self.level]).convert_alpha()
# 向上
def move_up(self, tankGroup, brickGroup, ironGroup, myhome):
self.direction_x, self.direction_y = 0, -1
# 先移动后判断
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
self.tank_0 = self.tank.subsurface((0, 0), (48, 48))
self.tank_1 = self.tank.subsurface((48, 0), (48, 48))
# 是否可以移动
is_move = True
# 地图顶端
if self.rect.top < 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞石头/钢墙
if pygame.sprite.spritecollide(self, brickGroup, False, None) or \
pygame.sprite.spritecollide(self, ironGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞其他坦克
if pygame.sprite.spritecollide(self, tankGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 大本营
if pygame.sprite.collide_rect(self, myhome):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
return is_move
# 向下
def move_down(self, tankGroup, brickGroup, ironGroup, myhome):
self.direction_x, self.direction_y = 0, 1
# 先移动后判断
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
self.tank_0 = self.tank.subsurface((0, 48), (48, 48))
self.tank_1 = self.tank.subsurface((48, 48), (48, 48))
# 是否可以移动
is_move = True
# 地图底端
if self.rect.bottom > 630 - 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞石头/钢墙
if pygame.sprite.spritecollide(self, brickGroup, False, None) or \
pygame.sprite.spritecollide(self, ironGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞其他坦克
if pygame.sprite.spritecollide(self, tankGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 大本营
if pygame.sprite.collide_rect(self, myhome):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
return is_move
# 向左
def move_left(self, tankGroup, brickGroup, ironGroup, myhome):
self.direction_x, self.direction_y = -1, 0
# 先移动后判断
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
self.tank_0 = self.tank.subsurface((0, 96), (48, 48))
self.tank_1 = self.tank.subsurface((48, 96), (48, 48))
# 是否可以移动
is_move = True
# 地图左端
if self.rect.left < 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞石头/钢墙
if pygame.sprite.spritecollide(self, brickGroup, False, None) or \
pygame.sprite.spritecollide(self, ironGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞其他坦克
if pygame.sprite.spritecollide(self, tankGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 大本营
if pygame.sprite.collide_rect(self, myhome):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
return is_move
# 向右
def move_right(self, tankGroup, brickGroup, ironGroup, myhome):
self.direction_x, self.direction_y = 1, 0
# 先移动后判断
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
self.tank_0 = self.tank.subsurface((0, 144), (48, 48))
self.tank_1 = self.tank.subsurface((48, 144), (48, 48))
# 是否可以移动
is_move = True
# 地图右端
if self.rect.right > 630 - 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞石头/钢墙
if pygame.sprite.spritecollide(self, brickGroup, False, None) or \
pygame.sprite.spritecollide(self, ironGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 撞其他坦克
if pygame.sprite.spritecollide(self, tankGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
# 大本营
if pygame.sprite.collide_rect(self, myhome):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
is_move = False
return is_move
# 死后重置
def reset(self):
self.level = 0
self.protected = False
self.tank = pygame.image.load(self.tanks[self.level]).convert_alpha()
self.tank_0 = self.tank.subsurface((0, 0), (48, 48))
self.tank_1 = self.tank.subsurface((48, 0), (48, 48))
self.rect = self.tank_0.get_rect()
self.direction_x, self.direction_y = 0, -1
if self.player == 1:
self.rect.left, self.rect.top = 3 + 24 * 8, 3 + 24 * 24
elif self.player == 2:
self.rect.left, self.rect.top = 3 + 24 * 16, 3 + 24 * 24
else:
raise ValueError('myTank class -> player value error.')
self.speed = 3

# 敌方坦克类
class enemyTank(pygame.sprite.Sprite):
def __init__(self, x=None, kind=None, is_red=None):
pygame.sprite.Sprite.__init__(self)
# 用于给刚生成的坦克播放出生特效
self.born = True
self.times = 90
# 坦克的种类编号
if kind is None:
self.kind = random.randint(0, 3)
else:
self.kind = kind
# 所有坦克
self.tanks1 = ['images/enemyTank/enemy_1_0.png', 'images/enemyTank/enemy_1_1.png', 'images/enemyTank/enemy_1_2.png', 'images/enemyTank/enemy_1_3.png']
self.tanks2 = ['images/enemyTank/enemy_2_0.png', 'images/enemyTank/enemy_2_1.png', 'images/enemyTank/enemy_2_2.png', 'images/enemyTank/enemy_2_3.png']
self.tanks3 = ['images/enemyTank/enemy_3_0.png', 'images/enemyTank/enemy_3_1.png', 'images/enemyTank/enemy_3_2.png', 'images/enemyTank/enemy_3_3.png']
self.tanks4 = ['images/enemyTank/enemy_4_0.png', 'images/enemyTank/enemy_4_1.png', 'images/enemyTank/enemy_4_2.png', 'images/enemyTank/enemy_4_3.png']
self.tanks = [self.tanks1, self.tanks2, self.tanks3, self.tanks4]
# 是否携带食物(红色的坦克携带食物)
if is_red is None:
self.is_red = random.choice((True, False, False, False, False))
else:
self.is_red = is_red
# 同一种类的坦克具有不同的颜色, 红色的坦克比同类坦克多一点血量
if self.is_red:
self.color = 3
else:
self.color = random.randint(0, 2)
# 血量
self.blood = self.color
# 载入(两个tank是为了轮子特效)
self.tank = pygame.image.load(self.tanks[self.kind][self.color]).convert_alpha()
self.tank_0 = self.tank.subsurface((0, 48), (48, 48))
self.tank_1 = self.tank.subsurface((48, 48), (48, 48))
self.rect = self.tank_0.get_rect()
# 坦克位置
if x is None:
self.x = random.randint(0, 2)
else:
self.x = x
self.rect.left, self.rect.top = 3 + self.x * 12 * 24, 3
# 坦克是否可以行动
self.can_move = True
# 坦克速度
self.speed = max(3 - self.kind, 1)
# 方向
self.direction_x, self.direction_y = 0, 1
# 是否存活
self.being = True
# 子弹
self.bullet = Bullet()
# 射击
def shoot(self):
self.bullet.being = True
self.bullet.turn(self.direction_x, self.direction_y)
if self.direction_x == 0 and self.direction_y == -1:
self.bullet.rect.left = self.rect.left + 20
self.bullet.rect.bottom = self.rect.top - 1
elif self.direction_x == 0 and self.direction_y == 1:
self.bullet.rect.left = self.rect.left + 20
self.bullet.rect.top = self.rect.bottom + 1
elif self.direction_x == -1 and self.direction_y == 0:
self.bullet.rect.right = self.rect.left - 1
self.bullet.rect.top = self.rect.top + 20
elif self.direction_x == 1 and self.direction_y == 0:
self.bullet.rect.left = self.rect.right + 1
self.bullet.rect.top = self.rect.top + 20
else:
raise ValueError('enemyTank class -> direction value error.')
# 随机移动
def move(self, tankGroup, brickGroup, ironGroup, myhome):
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
is_move = True
if self.direction_x == 0 and self.direction_y == -1:
self.tank_0 = self.tank.subsurface((0, 0), (48, 48))
self.tank_1 = self.tank.subsurface((48, 0), (48, 48))
if self.rect.top < 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
elif self.direction_x == 0 and self.direction_y == 1:
self.tank_0 = self.tank.subsurface((0, 48), (48, 48))
self.tank_1 = self.tank.subsurface((48, 48), (48, 48))
if self.rect.bottom > 630 - 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
elif self.direction_x == -1 and self.direction_y == 0:
self.tank_0 = self.tank.subsurface((0, 96), (48, 48))
self.tank_1 = self.tank.subsurface((48, 96), (48, 48))
if self.rect.left < 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
elif self.direction_x == 1 and self.direction_y == 0:
self.tank_0 = self.tank.subsurface((0, 144), (48, 48))
self.tank_1 = self.tank.subsurface((48, 144), (48, 48))
if self.rect.right > 630 - 3:
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
else:
raise ValueError('enemyTank class -> direction value error.')
if pygame.sprite.spritecollide(self, brickGroup, False, None) \
or pygame.sprite.spritecollide(self, ironGroup, False, None) \
or pygame.sprite.spritecollide(self, tankGroup, False, None):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
if pygame.sprite.collide_rect(self, myhome):
self.rect = self.rect.move(self.speed*-self.direction_x, self.speed*-self.direction_y)
self.direction_x, self.direction_y = random.choice(([0, 1], [0, -1], [1, 0], [-1, 0]))
is_move = False
return is_move
# 重新载入坦克
def reload(self):
self.tank = pygame.image.load(self.tanks[self.kind][self.color]).convert_alpha()
self.tank_0 = self.tank.subsurface((0, 48), (48, 48))
self.tank_1 = self.tank.subsurface((48, 48), (48, 48))
  再接着看子弹的实现,子弹的主要属性包括:方向、速度、是否存活、是否为加强版等,代码实现如下:
# 子弹类
class Bullet(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
# 子弹四个方向(上下左右)
self.bullets = ['images/bullet/bullet_up.png', 'images/bullet/bullet_down.png', 'images/bullet/bullet_left.png', 'images/bullet/bullet_right.png']
# 子弹方向(默认向上)
self.direction_x, self.direction_y = 0, -1
self.bullet = pygame.image.load(self.bullets[0])
self.rect = self.bullet.get_rect()
# 在坦克类中再赋实际值
self.rect.left, self.rect.right = 0, 0
# 速度
self.speed = 6
# 是否存活
self.being = False
# 是否为加强版子弹(可碎钢板)
self.stronger = False
# 改变子弹方向
def turn(self, direction_x, direction_y):
self.direction_x, self.direction_y = direction_x, direction_y
if self.direction_x == 0 and self.direction_y == -1:
self.bullet = pygame.image.load(self.bullets[0])
elif self.direction_x == 0 and self.direction_y == 1:
self.bullet = pygame.image.load(self.bullets[1])
elif self.direction_x == -1 and self.direction_y == 0:
self.bullet = pygame.image.load(self.bullets[2])
elif self.direction_x == 1 and self.direction_y == 0:
self.bullet = pygame.image.load(self.bullets[3])
else:
raise ValueError('Bullet class -> direction value error.')
# 移动
def move(self):
self.rect = self.rect.move(self.speed*self.direction_x, self.speed*self.direction_y)
# 到地图边缘后消失
if (self.rect.top < 3) or (self.rect.bottom > 630 - 3) or (self.rect.left < 3) or (self.rect.right > 630 - 3):
self.being = False
  最后,我们看一下程序的主要初始化代码,如下所示:
  # 初始化
  pygame.init()
  pygame.mixer.init()
  screen = pygame.display.set_mode((630, 630))
  pygame.display.set_caption("TANK")
  # 加载图片
  bg_img = pygame.image.load("images/others/background.png")
  # 加载音效
  add_sound = pygame.mixer.Sound("audios/add.wav")
  add_sound.set_volume(1)
  bang_sound = pygame.mixer.Sound("audios/bang.wav")
  bang_sound.set_volume(1)
  blast_sound = pygame.mixer.Sound("audios/blast.wav")
  blast_sound.set_volume(1)
  fire_sound = pygame.mixer.Sound("audios/fire.wav")
  fire_sound.set_volume(1)
  Gunfire_sound = pygame.mixer.Sound("audios/Gunfire.wav")
  Gunfire_sound.set_volume(1)
  hit_sound = pygame.mixer.Sound("audios/hit.wav")
  hit_sound.set_volume(1)
  start_sound = pygame.mixer.Sound("audios/start.wav")
  start_sound.set_volume(1)
  # 开始界面
  num_player = show_start_interface(screen, 630, 630)
  # 播放游戏开始的音乐
  start_sound.play()
  # 关卡
  stage = 0
  num_stage = 2
  # 游戏是否结束
  is_gameover = False
  # 时钟
  clock = pygame.time.Clock()
  看一下实现效果:
  再说一下玩家一、二的操作键,玩家一、二移动键分别为:WASD、←→↑↓,玩家一、二射击键分别为:J、0。
  总结
  本文我们使用 Python 实现了坦克大战的基本功能,还有待完善,有兴趣的话,可以对游戏做进一步的完善和扩展。

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