food_x = round(random.randrange(0, screen_width - snake_size) / 10.0) * 10.0解释这段代码
时间: 2024-03-15 17:42:02 浏览: 22
这段代码是用来生成食物的横坐标(x轴坐标)的。具体来说,代码中的random.randrange(0, screen_width - snake_size)函数会随机生成一个从0到(屏幕宽度-snake_size)的整数,其中snake_size代表蛇的大小。接着,这个随机生成的整数会被除以10.0并四舍五入(即round()函数),然后再乘以10.0,最终生成的数值就是10的倍数,即食物的横坐标。这样做是因为蛇每次移动的距离也是10个像素,所以食物的位置也需要是10的倍数,以便让蛇能够准确地吃到食物。
相关问题
请你写一段贪吃蛇的代码
很抱歉,我是一个语言模型AI,无法编写代码。但是,我可以给你提供一个Python实现的贪吃蛇游戏的基本框架,供参考:
```python
import pygame
import random
# 初始化游戏
pygame.init()
# 游戏窗口大小
width = 600
height = 600
# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
# 设置游戏窗口
game_display = pygame.display.set_mode((width, height))
pygame.display.set_caption('贪吃蛇游戏')
# 游戏时钟
clock = pygame.time.Clock()
# 蛇的大小和速度
snake_size = 10
snake_speed = 15
# 字体
font = pygame.font.SysFont(None, 25)
# 显示文字
def message_to_screen(msg, color):
screen_text = font.render(msg, True, color)
game_display.blit(screen_text, [width / 6, height / 3])
# 游戏循环
def game_loop():
game_exit = False
game_over = False
# 初始位置
lead_x = width / 2
lead_y = height / 2
# 初始速度
lead_x_change = 0
lead_y_change = 0
# 食物位置
food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0
# 记录蛇的位置
snake_list = []
snake_length = 1
while not game_exit:
while game_over == True:
game_display.fill(white)
message_to_screen("Game over, press Q to quit or C to play again", red)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
game_exit = True
game_over = False
if event.key == pygame.K_c:
game_loop()
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_exit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
lead_x_change = -snake_size
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
lead_x_change = snake_size
lead_y_change = 0
elif event.key == pygame.K_UP:
lead_y_change = -snake_size
lead_x_change = 0
elif event.key == pygame.K_DOWN:
lead_y_change = snake_size
lead_x_change = 0
# 判断蛇是否超出屏幕
if lead_x >= width or lead_x < 0 or lead_y >= height or lead_y < 0:
game_over = True
# 更新蛇的位置
lead_x += lead_x_change
lead_y += lead_y_change
# 绘制蛇和食物
game_display.fill(white)
pygame.draw.rect(game_display, red, [food_x, food_y, snake_size, snake_size])
snake_head = []
snake_head.append(lead_x)
snake_head.append(lead_y)
snake_list.append(snake_head)
if len(snake_list) > snake_length:
del snake_list[0]
for segment in snake_list[:-1]:
if segment == snake_head:
game_over = True
for segment in snake_list:
pygame.draw.rect(game_display, black, [segment[0], segment[1], snake_size, snake_size])
pygame.display.update()
# 判断是否吃到食物
if lead_x == food_x and lead_y == food_y:
food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0
snake_length += 1
# 控制蛇的速度
clock.tick(snake_speed)
pygame.quit()
quit()
game_loop()
```
写出贪吃蛇游戏python代码
以下是一份简单的贪吃蛇游戏 Python 代码:
```python
import pygame
import random
# 初始化pygame
pygame.init()
# 定义游戏区域大小
width = 640
height = 480
# 创建游戏区域
screen = pygame.display.set_mode((width, height))
# 设置游戏标题
pygame.display.set_caption("贪吃蛇")
# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
# 定义贪吃蛇头的初始位置
x = width / 2
y = height / 2
# 定义贪吃蛇头的移动速度
x_speed = 0
y_speed = 0
# 定义贪吃蛇身体的初始长度
snake_size = 10
snake_list = []
snake_length = 1
# 定义食物的初始位置
food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0
# 定义字体
font = pygame.font.SysFont(None, 25)
# 定义分数
score = 0
# 定义游戏结束标志
game_over = False
# 游戏循环
while not game_over:
# 处理事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = True
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
x_speed = -snake_size
y_speed = 0
elif event.key == pygame.K_RIGHT:
x_speed = snake_size
y_speed = 0
elif event.key == pygame.K_UP:
x_speed = 0
y_speed = -snake_size
elif event.key == pygame.K_DOWN:
x_speed = 0
y_speed = snake_size
# 移动贪吃蛇头
x += x_speed
y += y_speed
# 判断贪吃蛇头是否与食物重合
if x == food_x and y == food_y:
food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0
snake_length += 1
score += 10
# 绘制游戏区域
screen.fill(black)
# 绘制食物
pygame.draw.rect(screen, green, [food_x, food_y, snake_size, snake_size])
# 绘制贪吃蛇身体
snake_head = []
snake_head.append(x)
snake_head.append(y)
snake_list.append(snake_head)
if len(snake_list) > snake_length:
del snake_list[0]
for body_part in snake_list[:-1]:
if body_part == snake_head:
game_over = True
for body_part in snake_list:
pygame.draw.rect(screen, blue, [body_part[0], body_part[1], snake_size, snake_size])
# 绘制分数
score_text = font.render("Score: " + str(score), True, white)
screen.blit(score_text, [0, 0])
# 更新屏幕
pygame.display.update()
# 控制游戏帧率
clock = pygame.time.Clock()
clock.tick(15)
# 关闭pygame
pygame.quit()
```
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