我如何实时更新pygame中的时间

Question

I am trying to display how long the game has been running for in real time. To do this, i have used self.time_passed = pygame.time.get_ticks()/1000 and called it as g.write("Time: %d" %(g.time_passed), g.white ,10, 10, 50) . My write function looks like this:

def write(self, text, color, x , y, size):
            font = pygame.font.SysFont("airel", size)
            text = font.render(text, True, color)
            textRect = text.get_rect()
            self.screen.blit(text,(x , y))

My probelm is that the time is not updated in real time. It only updates the number of seconds everytime the player dies, even though i placed g.write("Time: %d" %(g.time_passed), g.white ,10, 10, 50) inside my main while True: game loop. Thanks for help.

Answer 1

I guess it is because the system font is called Arial and not airel . Or maybe you are using the font Aerial ?

This probably causes this funcion to fail and the one called when the player dies works fine.

Answer 2

Personally I would use time.time()

import time

start = time.time()

# your code

end = time.time()
duration = end - start # answer in seconds
print(duration)

Also you might want to just declare the font once like this:

import pygame

pygame.init()

font18 = pygame.font.SysFont("ariel", 18)

displaysurf = pygame.display.init((1280, 720))

def write(f, t, x, y, c):
    textsurf = f.render(t, True, c)
    displaysurf.blit(textsurf, (x, y)