Hướng dẫn lập trình Python – Đồng hồ đếm ngược

Hướng dẫn chi tiết cách tạo phần mềm ứng dụng đếm ngược thời gian bằng ngôn ngữ lập trình Python.

Link tải audio sử dụng trong chương trình: Click here

Sau đây là code chương trình:

import pygame

import time

import math

pygame.init()

screen=pygame.display.set_mode((500,600))

pygame.display.set_caption(“Countdown”)

GRAY=(169,169,169)

AQUA=(0,255,255)

BLACK=(0,0,0)

RED=(255,0,0)

font=pygame.font.SysFont(‘sans’,50)

font1=pygame.font.SysFont(‘sans’,100)

b1=font.render(‘+’,True,BLACK)

b2=font.render(‘-‘,True,BLACK)

b3=font.render(‘Min’,True,BLACK)

b4=font.render(‘Sec’,True,BLACK)

b5=font.render(‘Start’,True,BLACK)

b6=font.render(‘Reset’,True,BLACK)

clock=pygame.time.Clock()

mins=0

secs=0

total_secs=0

total=0

start=False

sound1=pygame.mixer.Sound(‘tick.wav’)

sound2=pygame.mixer.Sound(‘timeout.wav’)

running=True

while running:

            clock.tick(60)

            screen.fill(GRAY)

            mouse_x,mouse_y=pygame.mouse.get_pos()

            # Vẽ các hình chữ nhật

            pygame.draw.rect(screen,AQUA,(100,50,50,50))

            pygame.draw.rect(screen,AQUA,(100,130,50,50))

            pygame.draw.rect(screen,AQUA,(350,50,50,50))

            pygame.draw.rect(screen,AQUA,(350,130,50,50))

            pygame.draw.rect(screen,AQUA,(50,200,170,50))

            pygame.draw.rect(screen,AQUA,(280,200,170,50))

            pygame.draw.rect(screen,BLACK,(45,495,410,60))

            pygame.draw.rect(screen,AQUA,(50,500,400,50))

            #Vẽ Min

            screen.blit(b3,(10,45))

            screen.blit(b3,(420,45))

            #Vẽ Sec

            screen.blit(b4,(10,125))

            screen.blit(b4,(420,125))

            #Vẽ dấu cộng

            screen.blit(b1,(110,45))

            screen.blit(b1,(110,125))

            #Vẽ dấu trừ

            screen.blit(b2,(365,45))

            screen.blit(b2,(365,125))

            # Vẽ nút Start, Reset

            screen.blit(b5,(90,200))

            screen.blit(b6,(320,200))

            # Vẽ đồng hồ

            pygame.draw.circle(screen,BLACK,(250,380),100)

            pygame.draw.circle(screen,AQUA,(250,380),98)

            pygame.draw.circle(screen,BLACK,(250,380),5)

            for event in pygame.event.get():

                        if event.type==pygame.QUIT:

                                    running=False

                        if event.type==pygame.MOUSEBUTTONDOWN:

                                    if event.button==1:

                                                if (100<mouse_x<150) and (50<mouse_y<100):

                                                            total_secs+=60

                                                            total=total_secs

                                                if (100<mouse_x<150) and (130<mouse_y<180):

                                                            total_secs+=1

                                                            total=total_secs

                                                if (350<mouse_x<400) and (50<mouse_y<100):

                                                            total_secs-=60

                                                            total=total_secs

                                                if (350<mouse_x<400) and (130<mouse_y<180):

                                                            total_secs-=1

                                                            total=total_secs

                                                if (50<mouse_x<220) and (200<mouse_y<250):

                                                            total=total_secs

                                                            start=True

                                                if (280<mouse_x<450) and (200<mouse_y<250):

                                                            total_secs=0

            #Ghi lệnh cho nút start

            if start:

                        if total_secs>0:

                                    pygame.mixer.Sound.play(sound1)

                                    total_secs-=1

                                    time.sleep(1)

                        else:

                                    pygame.mixer.Sound.play(sound2)

                                    start=False

            #Vẽ Thời gian hiện tại

            mins=total_secs//60

            secs=total_secs-(mins*60)

            text_time=font1.render(str(mins)+’:’+str(secs),True,RED)

            screen.blit(text_time,(180,50))

            # Vẽ kim giây chạy

            x_sec=250+90*math.sin(6*secs*math.pi/180)

            y_sec=380-90*math.cos(6*secs*math.pi/180)

            pygame.draw.line(screen,RED,(250,380),(int(x_sec),int(y_sec)))

            # Vẽ kim phút chạy

            x_min=250+50*math.sin(6*mins*math.pi/180)

            y_min=380-50*math.cos(6*mins*math.pi/180)

            pygame.draw.line(screen,BLACK,(250,380),(int(x_min),int(y_min)))

           # Vẽ hình chữ nhật đỏ để giảm dần theo thời gian

            if total!=0:

                        pygame.draw.rect(screen,RED,(50,500,int(400*(total_secs/total)),50))

            pygame.display.flip()

pygame.quit()