使用Python语言实现愤怒的小鸟

实现愤怒的小鸟游戏需要用到 Pygame 和 PyBox2D 两个 Python 库。下面是一个简单的愤怒的小鸟游戏实现示例：

import pygame
from Box2D import *
import random

pygame.init()

# 游戏窗口尺寸
WIDTH, HEIGHT = 640, 480
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("愤怒的小鸟")

# 颜色定义
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)

# PyBox2D 世界物理环境
world = b2World(gravity=(0, -10), doSleep=True)

# 地面
ground = world.CreateStaticBody(
    position=(0, 0),
    shapes=b2PolygonShape(box=(50, 1)),
)

# 猪
pig = world.CreateDynamicBody(
    position=(15, 5),
    angularDamping=1,
    linearDamping=1,
    fixtures=b2FixtureDef(
        shape=b2CircleShape(radius=0.5),
        density=1,
        friction=0.3,
        restitution=0.5,
    ),
)
pig.color = GREEN

# 小鸟
bird = world.CreateDynamicBody(
    position=(5, 5),
    fixtures=b2FixtureDef(
        shape=b2CircleShape(radius=0.5),
        density=1,
        friction=0.3,
        restitution=0.5,
    ),
)
bird.color = WHITE

# 游戏主循环
running = True
clock = pygame.time.Clock()
while running:
    # 事件处理
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.MOUSEBUTTONUP:
            # 点击鼠标，小鸟飞出去
            bird.ApplyForceToCenter((1000, 1000), True)

    # 模拟 PyBox2D 世界
    timeStep = 1.0 / 60
    vel_iters, pos_iters = 6, 2
    world.Step(timeStep, vel_iters, pos_iters)

    # 绘制游戏场景
    screen.fill(BLACK)
    for body in [ground, pig, bird]:
        for fixture in body.fixtures:
            shape = fixture.shape
            if isinstance(shape, b2CircleShape):
                # 绘制圆形
                pos = body.transform * shape.pos
                pygame.draw.circle(
                    screen,
                    body.color,
                    (int(pos.x * 20), int(HEIGHT - pos.y * 20)),
                    int(shape.radius * 20),
                )
            elif isinstance(shape, b2PolygonShape):
                # 绘制多边形
                vertices = [(body.transform * v) * 20 for v in shape.vertices]
                pygame.draw.polygon(
                    screen,
                    body.color,
                    vertices,
                )

    pygame.display.flip()
    clock.tick(60)

pygame.quit()

这个例子中，我们使用 Pygame 来绘制游戏场景，并使用 PyBox2D 来模拟游戏物理环境。我们创建了一个地面、一个猪和一个小鸟，并在游戏主循环中模拟 PyBox2D 世界，处理事件，并绘制游戏场景。当点击鼠标时，小鸟会飞出去。