phcharm贪吃蛇小游戏后续一（代码1，2，3前文已发）

时间：2024-11-04 20:08:15

代码4

上篇博文中实现方块在网格线中移动，但我们发现方块并没有刚好在网格线边缘移动（会在线上），同时方块如果比作蛇头的话，一般老的贪吃蛇游戏只会90度转弯，此前的代码左右或上下相当于180度，加以修改（判断如果方块左或右移动，只允许按键上下移动，同理...），改完后方块会按照网格线移动

90

import pygame
import sys
import random

pygame.init()  # 初始化pygame
clock = pygame.time.Clock()
size = width, height = 960, 640  # 窗口大小
screen = pygame.display.set_mode(size)
game_speed = 120
color = 0, 0, 0  # 设置背景颜色
color2 = 33, 33, 33
square_color = 33, 255, 33  # 小方块颜色
square_color2 = 0, 0, 0

# square_x, square_y = 0, 0   # 小方块坐标
# speed=0.05 # 方块速度
# square_speed_x,square_speed_y=speed,0
# square_size = 20   # 小方块大小
CELL_SIZE = 20
square_rect = pygame.Rect(0, 0, CELL_SIZE, CELL_SIZE)
UP, DOWN, LEFT, RIGHT = (0, -1), (0, 1), (-1, 0), (1, 0)
square_direction = RIGHT  # 定义一个初始方向
square_turn = RIGHT
while True:
    for event in pygame.event.get():  # 遍历所有事件
        if event.type == pygame.QUIT:  # 如果单击关闭窗口，则退出
            sys.exit()  # 执行退出操作
        elif event.type == pygame.KEYDOWN:
            if square_direction in [LEFT, RIGHT]:
                if event.key == pygame.K_UP:
                    square_turn = UP
                elif event.key == pygame.K_DOWN:
                    square_turn = DOWN
            elif square_direction in [UP, DOWN]:
                if event.key == pygame.K_LEFT:
                    square_turn = LEFT
                elif event.key == pygame.K_RIGHT:
                    square_turn = RIGHT
    if square_rect.x % CELL_SIZE == 0 and square_rect.y % CELL_SIZE == 0:
        square_direction = square_turn
    square_rect = square_rect.move(square_direction)
    # 防止小方块移出左右边界
    if square_rect.left < 0:
        square_rect.left = 0
    elif square_rect.right > width:
        square_rect.right = width
    if square_rect.top < 0:
        square_rect.top = 0
    elif square_rect.bottom > height:
        square_rect.bottom = height

    # 终端看坐标
    print(square_rect.x, square_rect.y, square_direction[0], square_direction[1])
    screen.fill(color)  # 填充颜色
    # pygame.draw.rect(screen, square_color,square_rect)
    for i in range(CELL_SIZE, width, CELL_SIZE):
        pygame.draw.line(screen, color2, (i, 0), (i, height))
    for i in range(CELL_SIZE, height, CELL_SIZE):
        pygame.draw.line(screen, color2, (0, i), (width, i))
    screen.fill(square_color, square_rect)
    screen.fill(square_color2, square_rect.inflate(-4, -4))  # 可以放大或缩小图形
    pygame.display.flip()  # 更新显示
    clock.tick(game_speed)
pygame.quit()

 代码5

要生成蛇的身体，为了更加精准的控制移动的时间间隔，继续优化代码

终端显示游戏结束

蛇身

咬到蛇身或撞墙也显示游戏结束

import pygame
import sys
import random

# 设置常数
CELL_SIZE = 20
UP, DOWN, LEFT, RIGHT = (0, -CELL_SIZE), (0, CELL_SIZE), (-CELL_SIZE, 0), (CELL_SIZE, 0)

# 初始化
pygame.init()  # 初始化pygame
pygame.display.set_caption('贪吃蛇')

# 窗口对象
clock = pygame.time.Clock()
size = width, height = 960, 640  # 窗口大小
screen = pygame.display.set_mode(size)
game_field = screen.get_rect()  # <rect(0,0,960,640)>蛇能运行的整个范围
game_speed = 60
color = 0, 0, 0  # 设置背景颜色
color2 = 33, 33, 33
playing=True

# Snake蛇
square_color = 33, 255, 33  # 小方块颜色
square_color2 = 0, 0, 0
square_color3=255,0,0
square_rect = pygame.Rect(0, 0, CELL_SIZE, CELL_SIZE)
square_direction = RIGHT  # 定义一个初始方向
square_turn = RIGHT
square_speed = 10  # 每秒走几个格子
square_delay = 1000 / square_speed  # 蛇运动的间隔
square_time2move = pygame.time.get_ticks() + square_delay
square_body=[pygame.Rect(0,0,0,0)]*40  # 蛇的身体
while True:
    for event in pygame.event.get():  # 遍历所有事件
        if event.type == pygame.QUIT:  # 如果单击关闭窗口，则退出
            sys.exit()  # 执行退出操作
        elif event.type == pygame.KEYDOWN:
            if square_direction in [LEFT, RIGHT]:
                if event.key == pygame.K_UP:
                    square_turn = UP
                elif event.key == pygame.K_DOWN:
                    square_turn = DOWN
            elif square_direction in [UP, DOWN]:
                if event.key == pygame.K_LEFT:
                    square_turn = LEFT
                elif event.key == pygame.K_RIGHT:
                    square_turn = RIGHT

# 更新数据

    #1.移动蛇
    if pygame.time.get_ticks() >= square_time2move:
        square_time2move = pygame.time.get_ticks() + square_delay
        square_body=[square_rect]+square_body   #增加一节身体
        square_body.pop()    #截取尾部
        square_direction = square_turn
        square_rect = square_rect.move(square_direction)


    #2.判断游戏是否结束
    if playing:
        #撞墙
        if not game_field.contains(square_rect):
            playing=False
        #撞身体
        for cell in square_body:
            if square_rect==cell:
                playing = False
        if not playing:
            print('游戏结束！！！')



# 更新画面
    if playing:
        # 终端看坐标
        output = "坐标：%r 速度：%r 范围：%r FPS：%0.2f 时间：%r"
        print(output % (
            square_rect, square_direction, game_field.contains(square_rect), clock.get_fps(), pygame.time.get_ticks()))

        # 填充颜色
        screen.fill(color)

        # 画格子
        for i in range(CELL_SIZE, width, CELL_SIZE):
            pygame.draw.line(screen, color2, (i, 0), (i, height))
        for i in range(CELL_SIZE, height, CELL_SIZE):
            pygame.draw.line(screen, color2, (0, i), (width, i))

        # 画蛇
        # 1.画头
        screen.fill(square_color, square_rect)
        screen.fill(square_color3, square_rect.inflate(-4, -4))  # 可以放大或缩小图形
        # 2.画身体
        for cell in square_body:
            screen.fill(square_color,cell)
            screen.fill(square_color2, cell.inflate(-4,-4))



    # 更新窗口内容
    pygame.display.flip()  # 更新显示
    clock.tick(game_speed)


# 退出
pygame.quit()

 

至此我们已经实现蛇身移动

我们可以想象到后续代码量很多，这种编程方式面向过程，不便于理解和代码的重复利用率，灵活性

所以我们将重新打乱面向对象去编程，这里不要感到繁琐，

面向对象去写后更加便于我们理解和后续学习

面向过程

 

 面向对象

 

 

 

 后续会发布面向对象的代码，制作不易，点个关注

本人也是根据哔哩哔哩视频学习

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