如何解决Pygame数学答题项目添加计时器后出现的运行卡顿问题

问题核心原因 #

• 计时器触发间隔设置错误，且主循环未限制帧率导致CPU占用拉满
• InputBox模块导入时重复初始化Pygame、创建窗口
• 重复渲染刷新屏幕、音效重复加载带来额外性能开销
• 冗余的阻塞式计时代码、错误的退出逻辑

修复步骤 #

1. 修改主程序代码 #

修复后代码如下：

import pygame
import random
from InputBox import InputBox
from pygame import mixer

pygame.init()
# 计时器设置为1000毫秒(1秒)触发一次
pygame.time.set_timer(pygame.USEREVENT, 1000)
clock = pygame.time.Clock()
surface = pygame.display.set_mode((600, 400))
pygame.display.set_caption("Projecte MatZanfe")
font = pygame.font.SysFont('comicsans', 50)
base_font = pygame.font.Font(None, 32)
user_text = ''
color_active = pygame.Color('lightskyblue3')
running = True
points = 0
t = 60
# 提前加载音效，避免每次播放都读磁盘
mixer.music.load('StarPost.wav')

def start_the_game():
    x = random.randint(0, 10)
    y = random.randint(0, 10)
    return x, y

def display_the_game(x, y):
    z = x + y
    surface.fill((255, 70, 90))
    text = font.render(str(x) + "+" + str(y), True, (255, 255, 255))

    text_surface = base_font.render(user_text, True, (255, 255, 255))
    surface.blit(text, (260, 120))
    input_box.draw(surface)
    punts = font.render("Puntuació: " +  str(points),True, (255,255,255))
    surface.blit(punts, (350,30))
    titolsuma = font.render("SUMA (1)", True, (0,0,0))
    surface.blit(titolsuma,(10,20))
    temps = font.render("Temps:" + str(t),True, (255,255,255))
    surface.blit(temps,(0,220))

x, y = start_the_game()
input_box = InputBox(190, 250, 200, 32)

while running:
    # 限制帧率为30，避免CPU占用过高
    clock.tick(30)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.USEREVENT:
            t -= 1
            if t == 0:
                # 正确设置退出标识
                running = False
        else:
            result = input_box.handle_event(event)
            if result != None:
                if int(result) == int(x) + int(y):
                    points = points + 5
                    # 直接播放预加载的音效
                    mixer.music.play(1)
                x, y = start_the_game()
                input_box = InputBox(190, 250, 200, 32)
    display_the_game(x, y)
    pygame.display.update()

pygame.quit()

2. 修改InputBox模块代码 #

删除模块顶层的冗余初始化代码，仅保留类定义：

import pygame

COLOR_INACTIVE = pygame.Color('lightskyblue3')
COLOR_ACTIVE = pygame.Color('black')
FONT = pygame.font.SysFont('comicsans', 32)

class InputBox:

    def __init__(self, x, y, w, h, text=''):
        self.rect = pygame.Rect(x, y, w, h)
        self.color = COLOR_INACTIVE
        self.text = text
        self.txt_surface = FONT.render(text, True, self.color)
        self.active = False

    def handle_event(self, event):
        if event.type == pygame.MOUSEBUTTONDOWN:
            if self.rect.collidepoint(event.pos):
                self.active = not self.active
            else:
                self.active = False
            self.color = COLOR_ACTIVE if self.active else COLOR_INACTIVE
        if event.type == pygame.KEYDOWN:
            if self.active:
                if event.key == pygame.K_RETURN:
                    user_input = self.text
                    self.text = ''
                    self.txt_surface = FONT.render(self.text, True, self.color)
                    return user_input
                elif event.key == pygame.K_BACKSPACE:
                    self.text = self.text[:-1]
                else:
                    self.text += event.unicode
                self.txt_surface = FONT.render(self.text, True, self.color)

    def update(self):
        width = max(200, self.txt_surface.get_width()+10)
        self.rect.w = width

    def draw(self, screen):
        screen.blit(self.txt_surface, (self.rect.x+5, self.rect.y+5))
        pygame.draw.rect(screen, self.color, self.rect, 2)

if __name__ == '__main__':
    # 仅在直接运行InputBox.py时才执行下面的测试代码
    pygame.init()
    surface = pygame.display.set_mode((600, 400))
    base_font = pygame.font.Font(None, 32)
    color_active = pygame.Color('lightskyblue3')
    user_text = ''
    clock = pygame.time.Clock()
    input_box2 = InputBox(190, 250, 200, 32)
    input_boxes = [input_box2]
    done = False

    while not done:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                done = True
            for box in input_boxes:
                box.handle_event(event)

        for box in input_boxes:
            box.update()

        surface.fill((255, 70, 90))
        for box in input_boxes:
            box.draw(surface)

        pygame.display.flip()
        clock.tick(30)
    pygame.quit()

内容的提问来源于stack exchange，提问作者Torchllama