class Game:
"""
Contains the main control code and the game loop.
"""
def __init__(self, window):
"""
Constructor.
Args:
window (Window): The window instance to render to.
"""
self.window = window
self.clock = pygame.time.Clock()
self.defences = pygame.sprite.Group()
self.bullets = pygame.sprite.Group()
self.explosions = pygame.sprite.Group()
self.load_level("path")
self.defence_type = 0
self.defence_prototypes = [
Defence(self, "defence_" + name, -100, -100)
for name in ["pillbox", "wall", "mines", "artillery"]
]
def load_level(self, name):
"""
Loads a new level.
Args:
name (str): The name of the level (case sensitive).
"""
self.defences.empty()
self.bullets.empty()
self.explosions.empty()
self.level = Level(self, name)
self.wave = Wave(self, 1)
self.menu = Menu(self)
def run(self):
"""
Runs the main game loop.
"""
self.running = True
while self.running:
delta = self.clock.tick(60) / 1000.0
# Look for a quit event
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.quit()
elif event.type == pygame.MOUSEBUTTONDOWN:
if not self.menu.visible:
self.place_defence(pygame.mouse.get_pos())
self.menu.clicked()
elif event.type == pygame.KEYDOWN:
self.menu.key_pressed(event.key)
# Call update functions
self.menu.update()
self.level.pathfinding.update()
if not self.menu.visible:
self.level.time += delta
self.defences.update(delta)
self.bullets.update(delta)
self.explosions.update(delta)
self.wave.update(delta)
if self.wave.done:
self.wave = Wave(self, self.wave.number + 1)
# Redraw graphics
self.window.clear()
self.level.prefabs.draw(self.window.screen)
self.defences.draw(self.window.screen)
self.bullets.draw(self.window.screen)
self.wave.enemies.draw(self.window.screen)
self.explosions.draw(self.window.screen)
self.menu.draw(self.window.screen)
def quit(self):
"""
Quits and closes the game.
"""
self.running = False
def select_defence(self, type):
"""
Picks a defence type for placement.
Args:
type (int): The index of the selcted defence type.
"""
self.defence_type = type
def place_defence(self, position):
"""
Attempts to place a defence at the given position.
Args:
position (int, int): The intended coordinates of the defence.
"""
if self.defence_type < 0:
return
defence = self.defence_prototypes[self.defence_type]
if self.level.money < defence.cost:
return
x = position[0] - position[0] % 32
y = position[1] - position[1] % 32
# Stop if the defence would intersect with the level.
if self.level.collision.rect_blocked(x, y, defence.rect.width - 2,
defence.rect.height - 2):
return
# Stop if the defence may lead no path for enemies.
if hasattr(defence, "block") and self.level.pathfinding.is_critical(
(x, y)):
return
self.defences.add(Defence(self, defence.name, x, y))
self.level.money -= defence.cost
class Game:
"""
包含主控制代码和游戏循环
"""
def __init__(self, window):
"""
Args:
window (Window): 要显示的window实例
"""
self.window = window
self.clock = pygame.time.Clock()
self.defences = pygame.sprite.Group()
self.bullets = pygame.sprite.Group()
self.explosions = pygame.sprite.Group()
self.load_level("path")
self.defence_type = 0
self.defence_prototypes = [
Defence(self, "defence_" + name, -100, -100)
for name in ["pillbox", "wall", "mines", "artillery"]
]
def load_level(self, name):
"""
加载一个新的关卡
Args:
name (str): 关卡的名称
"""
self.defences.empty()
self.bullets.empty()
self.explosions.empty()
self.level = Level(self, name)
self.wave = Wave(self, 1)
self.menu = Menu(self)
def run(self):
""" 运行游戏主循环 """
self.running = True
# 播放音乐
t = threading.Thread(target=play_music)
t.start()
while self.running:
delta = self.clock.tick(60) / 1000.0
# 等待退出事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.quit()
elif event.type == pygame.MOUSEBUTTONDOWN:
if not self.menu.visible:
self.place_defence(pygame.mouse.get_pos())
self.menu.clicked()
elif event.type == pygame.KEYDOWN:
pass
# 调用更新函数
self.menu.update()
self.level.pathfinding.update()
if not self.menu.visible:
self.level.time += delta
self.defences.update(delta)
self.bullets.update(delta)
self.explosions.update(delta)
self.wave.update(delta)
if self.wave.done:
self.wave = Wave(self, self.wave.number + 1)
# 重新绘制图像
self.window.clear()
self.level.prefabs.draw(self.window.screen)
self.defences.draw(self.window.screen)
self.bullets.draw(self.window.screen)
self.wave.enemies.draw(self.window.screen)
self.explosions.draw(self.window.screen)
self.menu.draw(self.window.screen)
def quit(self):
""" 退出并关闭游戏 """
self.running = False
def select_defence(self, type):
"""
选择放置的防御类型
Args:
type (int): 所选防御类型
"""
self.defence_type = type
def place_defence(self, position):
"""
在给定位置放置炮塔
Args:
position (int, int): 炮塔的预期坐标
"""
if self.defence_type < 0 or self.defence_type > 3:
return
defence = self.defence_prototypes[self.defence_type]
if self.level.money < defence.cost:
return
x = position[0] - position[0] % 32
y = position[1] - position[1] % 32
# 若防御塔与关卡相交则停止
if self.level.collision.rect_blocked(x, y, defence.rect.width - 2,
defence.rect.height - 2):
return
# 若防御塔让敌人没有路线逃离则停止
if hasattr(defence, "block") and self.level.pathfinding.is_critical(
(x, y)):
return
self.defences.add(Defence(self, defence.name, x, y))
self.level.money -= defence.cost