object error in pygame

Question

class Powup(pg.sprite.Sprite):
    def __init__(self,x ,y ,color):
        pg.sprite.Sprite.__init__(self)
        self.image = pg.Surface((10,10))
        self.image.fill(color)
        self.rect = self.image.get_rect()
        self.rect.centerx = x
        self.rect.centery = y
        self.vx = 0
        self.vy = 0
        self.state = False
        self.power = 1
        self.timeout = 5000
        #self.last_true = pg.time.get_ticks()




    def update(self):

        if p.rect.left < self.rect.centerx < p.rect.right and self.rect.bottom >= 560:
            self.kill()
            self.last_true = pg.time.get_ticks()
            self.state = True
            p.image.fill(red)

        if ( pg.time.get_ticks() - self.last_true ) > 5000  :
            p.image.fill(black)
            self.state = False



        self.rect.y += self.vy

when I run the program it says

if ( pg.time.get_ticks() - self.last_true ) > 5000 : AttributeError: 'Powup' object has no attribute 'last_true'

This makes no sense to me. Could someone please explain this to me?

Even if you uncomment the line where you set it?

Roberto
– Roberto

2016-05-14 13:25:35 +00:00
Commented May 14, 2016 at 13:25 — Roberto
– Roberto, Commented May 14, 2016 at 13:25

oxrock · Accepted Answer · 2016-05-14 13:29:33Z

1

You have "self.last_true = pg.time.get_ticks()" commented out in your object initialization. If the first if statement in your update is false it never gets set properly to be tested in the second if statement. Therefore you're testing the value of something you've never set.

answered May 14, 2016 at 13:29

oxrock

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2 Comments

Aris Over a year ago

yes i tested that and i saw that. but i want the pg.time.get_ticks() to start when the first if statement is True can you suggest anything?

oxrock Over a year ago

If you're dead set on waiting until that statement is true before starting your "self.last_true" from being set, you have to have that second if statement hiding behind a bool toggle that gets flipped the first time the first statement is true.

Peter · Accepted Answer · 2016-05-14 13:48:18Z

0

Going by your comment to the other answer, you could potentially do it like this and ignore it if there is an error.

def update(self):

    if p.rect.left < self.rect.centerx < p.rect.right and self.rect.bottom >= 560:
        self.kill()
        self.last_true = pg.time.get_ticks()
        self.state = True
        p.image.fill(red)

    try:
        if ( pg.time.get_ticks() - self.last_true ) > 5000  :
            p.image.fill(black)
            self.state = False
    except AttributeError:
        pass


    self.rect.y += self.vy

answered May 14, 2016 at 13:48

Peter

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