用Python和Pygame实现打砖块游戏

标题:用Python和Pygame实现打砖块游戏

摘要: 本文将介绍如何使用Python和Pygame库实现一个经典的打砖块游戏。通过这个项目,你将学习到Pygame的基本用法、游戏循环、碰撞检测等知识。


1. 打砖块游戏简介(完整代码在末尾)

打砖块是一款经典的街机游戏,玩家需要控制挡板接住小球,并用小球打碎屏幕上的所有砖块。如果小球掉落到屏幕底部,则游戏结束。


2. 实现步骤
2.1 初始化 Pygame

首先,我们需要初始化 Pygame 并设置游戏窗口。

python 复制代码
import pygame
pygame.init()

SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("打砖块游戏")
2.2 定义游戏元素

我们需要定义挡板、小球和砖块的属性。

python 复制代码
# 挡板
paddle_width = 100
paddle_height = 20
paddle_x = (SCREEN_WIDTH - paddle_width) // 2
paddle_y = SCREEN_HEIGHT - 50
paddle_speed = 10

# 小球
ball_radius = 10
ball_x = SCREEN_WIDTH // 2
ball_y = SCREEN_HEIGHT // 2
ball_dx = 5 * random.choice([-1, 1])
ball_dy = -5

# 砖块
brick_width = 75
brick_height = 30
brick_rows = 5
brick_cols = 10
bricks = []
for row in range(brick_rows):
    for col in range(brick_cols):
        brick_x = col * (brick_width + 5) + 30
        brick_y = row * (brick_height + 5) + 50
        bricks.append(pygame.Rect(brick_x, brick_y, brick_width, brick_height))
2.3 游戏主循环

游戏主循环负责处理事件、更新游戏状态和绘制画面。

python 复制代码
while running:
    screen.fill(BLACK)

    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 挡板移动
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT] and paddle_x > 0:
        paddle_x -= paddle_speed
    if keys[pygame.K_RIGHT] and paddle_x < SCREEN_WIDTH - paddle_width:
        paddle_x += paddle_speed

    # 小球移动
    ball_x += ball_dx
    ball_y += ball_dy

    # 碰撞检测
    if ball_x <= 0 or ball_x >= SCREEN_WIDTH:
        ball_dx *= -1
    if ball_y <= 0:
        ball_dy *= -1
    if ball_y >= SCREEN_HEIGHT:
        running = False

    # 小球与挡板碰撞
    if pygame.Rect(paddle_x, paddle_y, paddle_width, paddle_height).collidepoint(ball_x, ball_y):
        ball_dy *= -1

    # 小球与砖块碰撞
    for brick in bricks[:]:
        if brick.collidepoint(ball_x, ball_y):
            bricks.remove(brick)
            ball_dy *= -1
            break

    # 绘制元素
    pygame.draw.rect(screen, BLUE, (paddle_x, paddle_y, paddle_width, paddle_height))
    pygame.draw.circle(screen, RED, (ball_x, ball_y), ball_radius)
    for brick in bricks:
        pygame.draw.rect(screen, GREEN, brick)

    # 更新屏幕
    pygame.display.flip()
    clock.tick(60)

3. 完整代码
复制代码
import pygame
import random

# 初始化 Pygame
pygame.init()

# 设置屏幕大小
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("打砖块游戏")

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

# 挡板设置
paddle_width = 100
paddle_height = 20
paddle_x = (SCREEN_WIDTH - paddle_width) // 2
paddle_y = SCREEN_HEIGHT - 50
paddle_speed = 10

# 小球设置
ball_radius = 10
ball_x = SCREEN_WIDTH // 2
ball_y = SCREEN_HEIGHT // 2
ball_dx = 5 * random.choice([-1, 1])
ball_dy = -5
ball_speed = 5

# 砖块设置
brick_width = 75
brick_height = 30
brick_rows = 5
brick_cols = 10
bricks = []
for row in range(brick_rows):
    for col in range(brick_cols):
        brick_x = col * (brick_width + 5) + 30
        brick_y = row * (brick_height + 5) + 50
        bricks.append(pygame.Rect(brick_x, brick_y, brick_width, brick_height))

# 游戏主循环
clock = pygame.time.Clock()
running = True
while running:
    screen.fill(BLACK)

    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 挡板移动
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT] and paddle_x > 0:
        paddle_x -= paddle_speed
    if keys[pygame.K_RIGHT] and paddle_x < SCREEN_WIDTH - paddle_width:
        paddle_x += paddle_speed

    # 小球移动
    ball_x += ball_dx
    ball_y += ball_dy

    # 小球碰撞检测
    if ball_x <= 0 or ball_x >= SCREEN_WIDTH:
        ball_dx *= -1
    if ball_y <= 0:
        ball_dy *= -1
    if ball_y >= SCREEN_HEIGHT:
        running = False  # 游戏结束

    # 小球与挡板碰撞
    if pygame.Rect(paddle_x, paddle_y, paddle_width, paddle_height).collidepoint(ball_x, ball_y):
        ball_dy *= -1

    # 小球与砖块碰撞
    for brick in bricks[:]:
        if brick.collidepoint(ball_x, ball_y):
            bricks.remove(brick)
            ball_dy *= -1
            break

    # 绘制挡板
    pygame.draw.rect(screen, BLUE, (paddle_x, paddle_y, paddle_width, paddle_height))

    # 绘制小球
    pygame.draw.circle(screen, RED, (ball_x, ball_y), ball_radius)

    # 绘制砖块
    for brick in bricks:
        pygame.draw.rect(screen, GREEN, brick)

    # 更新屏幕
    pygame.display.flip()
    clock.tick(60)

# 游戏结束
pygame.quit()

4. 运行游戏

将代码保存为 brick_breaker.py,然后在终端中运行:

bash 复制代码
python brick_breaker.py

5. 总结

通过这个打砖块游戏项目,我们学习了如何使用 Pygame 创建简单的2D游戏。希望这个项目能帮助你更好地理解游戏开发的基本概念。

标签: Python, Pygame, 打砖块游戏, 游戏开发


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