Pygame bullet firerate not working sometimes

Question

i have made this bullet class but i have a problem with the firerate. Sometimes i'm not able to shoot even when the little delay (700ms) between the two shots has ended. I guess it's due to the pygame.time.set_timer(). Anyways i'm looking for a quick solution because i wanna move on to work on another part of this game.

...

class Singlebullet(object):

    def __init__(self):
        self.img = pygame.image.load(r'C:\Users\Salem\Documents\MyGame1\bullet.png')
        self.state = 'ready'
        self.speed = 0
        self.firerate = 700
    
    def shoot(self):
        if current_bullet_type == 'single':
            if self.state == 'ready':
                self.x = myplane.x + 71 
                self.y = myplane.y 
            if self.state == 'fire':
                self.speed = -13
            for event in events:
                if event.type == pygame.KEYDOWN or event.type == pygame.KEYUP:
                    if event.key == pygame.K_SPACE:
                        self.state = 'fire'
                        pygame.time.set_timer(pygame.USEREVENT+1, self.firerate)
                if event.type == pygame.USEREVENT+1:
                    self.state = 'ready'
            MyScrollingScreen.blit(self.img, (self.x, self.y))
            self.y += self.speed
s1 = Singlebullet()
...
while running:
    ...
    s1.shoot()
    ...

Why do you shoot on space release too? Might want to make sure you're in "ready" state before shooting (starting the timer). — Vaillancourt
– Vaillancourt ♦, Commented May 2, 2021 at 0:02
You seem to be misusing the set_timer function. Check the documentation to see how it should be used. — Vaillancourt
– Vaillancourt ♦, Commented May 2, 2021 at 0:05
@Vaillancourt Thank you! I removed the KEYUP event and added the condition that the bullet should be in ready state before starting the timer and everything worked ! btw , i see that the documentation doesn't provide enough information about everything and that's why i missuse some functions. — Salem
– Salem, Commented May 2, 2021 at 12:45
Glad your issue is fixed! You can write (and accept) an answer explaining how you fixed it! — Vaillancourt
– Vaillancourt ♦, Commented May 2, 2021 at 13:04

Salem · Accepted Answer · 2021-05-02 13:50:16Z

So, i realized that i was missusing the pygame.time.set_timer() function. In fact, this resulted in making me able to shoot the bullet only when the timer resets itself, but i wasn't able to shoot when the countdown timer starts again. Then i added the condition that the bullet should be in ready state before starting/restarting the timer (now, the timer won't be restarted unless the bullet's state is set to 'ready' and i click the space button):

for event in events:
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE and self.state == 'ready':
                    self.state = 'fire'
                    pygame.time.set_timer(pygame.USEREVENT+1, self.firerate)
            if event.type == pygame.USEREVENT+1:
                self.state = 'ready'

And i have also removed the if event.type == pygame.KEYUP as it was absolutely useless.

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