elif event.type == pygame.MOUSEMOTION是什么意思

这是一个Pygame事件类型的条件语句，其意思是：如果当前事件类型为鼠标移动（MOUSEMOTION），执行下面的代码块。在Pygame游戏中，常常需要根据不同的事件类型来进行相应的处理，例如根据鼠标移动事件的位置改变游戏物体的位置等。

相关问题

import pygame from pygame.mixer import music import random class Ball(pygame.sprite.Sprite): def __init__(self,image_file,location,speed): pygame.sprite.Sprite.__init__(self) self.image = pygame.image.load(image_file) self.rect = self.image.get_rect() self.rect.left,self.rect.top = location self.speed = speed def move(self): self.rect = self.rect.move(self.speed) if self.rect.left < 0 or self.rect.right > width: self.speed[0] = -self.speed[0] if self.rect.top < 0 and (self.rect.left < 240 or self.rect.right > 400) : self.speed[1] = -self.speed[1] pygame.init() pygame.mixer.init() # 初始化混音器 clock = pygame.time.Clock() pygame.key.set_repeat(500,50) size = width,height = 640,480 screen = pygame.display.set_mode(size) screen.fill([255,255,255]) ball = Ball("desk_ball.png",[320,240],[10,8]) def new_func(Ball): bat = Ball("bat.png",[320,460],[0,0]) return bat bat = new_func(Ball) goal = Ball("goal.png",[240,0],[0,0]) screen.blit(ball.image,ball.rect) pygame.display.set_caption('乒乓球小游戏') #游戏标题 pygame.display.update() score = 0 lives = 5#总共有5个球 music.load("bg.mp3") # 加载背景音乐 music.play(-1) # 循环播放背景音乐，直到程序退出 done = False running = True while running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False if event.type == pygame.MOUSEMOTION: bat.rect.centerx = event.pos[0] if event.type == pygame.KEYDOWN: if event.key == pygame.K_y and lives == 0: lives = 5 done = False elif event.key == pygame.K_n and lives == 0: running = False if not done: ball.move() if pygame.sprite.collide_rect(ball,bat): ball.speed[1] = -10 if pygame.sprite.collide_rect(ball,goal): score += 1 ball.speed[1] = 10 screen.blit(ball.image,ball.rect) screen.blit(bat.image,bat.rect) for num in range(lives-1): screen.blit(ball.image,[600-num*40,0]) if ball.rect.bottom > height: lives -= 1 ball.rect.left,ball.rect.top = 320,240 if lives == 0: done = True else: over_font = pygame.font.Font(None,50) over_surf = over_font.render("Game over",1,[255,0,0]) screen.blit(over_surf,[240,240]) yn_font = pygame.font.Font(None,40) yn_surf = yn_font.render("Y:continue N:quit",1,[255,0,0]) screen.blit(yn_surf,[210,280]) score_font = pygame.font.Font(None,40) score_surf = score_font.render("score:"+str(score),1,[255,0,0]) screen.blit(score_surf,[0,0]) screen.blit(goal.image,goal.rect) pygame.display.update() clock.tick(20) screen.fill([255,255,255]) pygame.quit()基于这些代码补充在游戏界面加一条分割线

在代码中添加以下代码可以在游戏界面上添加一条分割线：

# 画一条分割线
pygame.draw.line(screen, [0, 0, 0], [0, 240], [640, 240], 5)

将其添加在`screen.fill([255,255,255])`之后，完整代码如下：

import pygame
from pygame.mixer import music
import random

class Ball(pygame.sprite.Sprite):
    def __init__(self,image_file,location,speed):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left,self.rect.top = location
        self.speed = speed

    def move(self):
        self.rect = self.rect.move(self.speed)
        if self.rect.left < 0 or self.rect.right > width:
            self.speed[0] = -self.speed[0]
        if self.rect.top < 0 and (self.rect.left < 240 or self.rect.right > 400) :
            self.speed[1] = -self.speed[1]

pygame.init()
pygame.mixer.init() # 初始化混音器
clock = pygame.time.Clock()
pygame.key.set_repeat(500,50)

size = width,height = 640,480
screen = pygame.display.set_mode(size)
screen.fill([255,255,255])

ball = Ball("desk_ball.png",[320,240],[10,8])

def new_func(Ball):
    bat = Ball("bat.png",[320,460],[0,0])
    return bat

bat = new_func(Ball)
goal = Ball("goal.png",[240,0],[0,0])

screen.blit(ball.image,ball.rect)
pygame.display.set_caption('乒乓球小游戏') #游戏标题
pygame.display.update()

score = 0
lives = 5#总共有5个球

music.load("bg.mp3") # 加载背景音乐
music.play(-1) # 循环播放背景音乐，直到程序退出

done = False
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.MOUSEMOTION:
            bat.rect.centerx = event.pos[0]
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_y and lives == 0:
                lives = 5
                done = False
            elif event.key == pygame.K_n and lives == 0:
                running = False

    if not done:
        ball.move()

        if pygame.sprite.collide_rect(ball,bat):
            ball.speed[1] = -10
        if pygame.sprite.collide_rect(ball,goal):
            score += 1
            ball.speed[1] = 10

        screen.blit(ball.image,ball.rect)
        screen.blit(bat.image,bat.rect)

        for num in range(lives-1):
            screen.blit(ball.image,[600-num*40,0])

        if ball.rect.bottom > height:
            lives -= 1
            ball.rect.left,ball.rect.top = 320,240

        if lives == 0:
            done = True
        else:
            over_font = pygame.font.Font(None,50)
            over_surf = over_font.render("Game over",1,[255,0,0])
            screen.blit(over_surf,[240,240])
            yn_font = pygame.font.Font(None,40)
            yn_surf = yn_font.render("Y:continue N:quit",1,[255,0,0])
            screen.blit(yn_surf,[210,280])
        
        score_font = pygame.font.Font(None,40)
        score_surf = score_font.render("score:"+str(score),1,[255,0,0])
        screen.blit(score_surf,[0,0])

        # 画一条分割线
        pygame.draw.line(screen, [0, 0, 0], [0, 240], [640, 240], 5)

        screen.blit(goal.image,goal.rect)
        pygame.display.update()

        clock.tick(20)
        screen.fill([255,255,255])

pygame.quit()

import pygame import time import random pygame.init() screen = pygame.display.set_mode((600, 500)) pygame.display.set_caption("接小球游戏") ball_x = 300 ball_y = 250 rect_x, rect_y, rect_w, rect_h = 300, 460, 120, 40 font1 = pygame.font.Font(None, 24) score = 0 lives = 3 def ball(ball_x, ball_y): pygame.draw.circle(screen, (255., 25, 52), (ball_x, ball_y), 20, 0) while True: for event in pygame.event.get(): print(event) if event.type == pygame.QUIT: pygame.quit() elif event.type == pygame.MOUSEMOTION: rect_x, _ = event.pos screen.fill((34, 177, 135)) ball_y = ball_y + 1 if ball_y > 500: ball_y = 0 ball_x = random.randint(0, 600) lives = lives -1 ball(ball_x, ball_y) if rect_x < ball_x < rect_x + rect_w and rect_y < ball_y < rect_y + rect_h: score = score + 1 ball_y = 0 ball_x = random.randint(0, 600) Text_score = font1.render('score:%d' % score, True, (0, 0, 0)) screen.blit(Text_score, (0, 0)) Text_lives = font1.render('lives:%d' % lives, True, (0, 0, 0)) screen.blit(Text_lives, (530, 0)) pygame.draw.rect(screen, (100, 200, 30), (rect_x, rect_y, rect_w, rect_h), 0) pygame.display.update() pygame.quit()升级这段代码

以下是我对代码的改进：

1. 添加游戏结束的判断条件，当生命值小于等于0时游戏结束。
2. 添加游戏开始和结束的提示信息。
3. 添加游戏暂停功能，按空格键可以暂停或继续游戏。
4. 添加计时器功能，游戏时间为60秒，时间到了游戏结束。

改进后的代码如下：

import pygame 
import time 
import random 

pygame.init() 
screen = pygame.display.set_mode((600, 500)) 
pygame.display.set_caption("接小球游戏") 

ball_x = 300 
ball_y = 250 
rect_x, rect_y, rect_w, rect_h = 300, 460, 120, 40 

font1 = pygame.font.Font(None, 24) 
score = 0 
lives = 3 
time_left = 60 

def ball(ball_x, ball_y): 
    pygame.draw.circle(screen, (255., 25, 52), (ball_x, ball_y), 20, 0) 

def show_message(text, x, y): 
    message = font1.render(text, True, (0, 0, 0)) 
    screen.blit(message, (x, y)) 

def game_over(): 
    screen.fill((255, 255, 255)) 
    show_message("游戏结束！", 250, 200) 
    show_message("得分：%d" % score, 250, 240) 
    pygame.display.update() 
    time.sleep(3) 
    pygame.quit() 

while True: 
    for event in pygame.event.get(): 
        if event.type == pygame.QUIT: 
            pygame.quit() 
        elif event.type == pygame.MOUSEMOTION: 
            rect_x, _ = event.pos 
        elif event.type == pygame.KEYDOWN: 
            if event.key == pygame.K_SPACE: 
                pygame.time.delay(500) 

    if lives <= 0 or time_left <= 0: 
        game_over() 
        break 

    screen.fill((34, 177, 135)) 

    ball_y += 1 
    if ball_y > 500: 
        ball_y = 0 
        ball_x = random.randint(0, 600) 
        lives -= 1 

    if rect_x < ball_x < rect_x + rect_w and rect_y < ball_y < rect_y + rect_h: 
        score += 1 
        ball_y = 0 
        ball_x = random.randint(0, 600) 

    Text_score = font1.render('得分：%d' % score, True, (0, 0, 0)) 
    screen.blit(Text_score, (0, 0)) 

    Text_lives = font1.render('生命：%d' % lives, True, (0, 0, 0)) 
    screen.blit(Text_lives, (530, 0)) 

    pygame.draw.rect(screen, (100, 200, 30), (rect_x, rect_y, rect_w, rect_h), 0) 

    time_left -= 1 
    Text_time = font1.render('时间：%d' % (time_left / 60), True, (0, 0, 0)) 
    screen.blit(Text_time, (250, 0)) 

    pygame.display.update() 

pygame.quit()

希望这个改进版的代码对你有所帮助！