CODEWITHSUNDEEP
pythonclasspygamespriterender
DerTier
DerTier

Reputation: 11

Sprite not adding to group to display on screen

Traceback (most recent call last): File "***/Pcprojects/pygameKCC/kcc-shmup.py", line 49, in all_sprites.update()

TypeError: unbound method update() must be called with Group instance as first argument (got nothing instead)

I'm following a tutorial that has working code (for him), and for my life I can't get this sprite to render. Can anyone tell me what I'm doing wrong? This is my first time with sprites other than a basic bouncy ball screen saver type thing. Thanks!

import pygame
import random
import sys
import math

#global constants
WIDTH = 360
HEIGHT = 480
FPS = 30

#define colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
#YELLOW = (X, X, X)


class Player(pygame.sprite.Sprite):
    #sprite for the player.
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        #required image and collision rectangle
        self.image = pygame.Surface((50, 50))
        self.image.fill(GREEN)
        self.rect = self.image.get_rect()
        self.rect.center = (WIDTH / 2, HEIGHT / 2)

#itialize pygame
#itialize music mixer
pygame.init()
pygame.mixer.init()

#create screen
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("My Game")
clock = pygame.time.Clock()

#create a group for all sprites to belong to
all_sprites = pygame.sprite.Group()
player = Player()
all_sprites.add(player)


running = True
while running:

    clock.tick(FPS)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

#updated:

    all_sprites.update()
    screen.fill(BLACK)
    all_sprites.draw(screen)
    pygame.display.flip()

pygame.quit()

Upvotes: 1

Views: 96

Answers (1)

furas
furas

Reputation: 142759

You have to first clear screen using fill() and later draw sprites - draw(). And after that you can send buffer on monitor - flip()

#Render/Draw
screen.fill(BLACK)
all_sprites.draw(screen)
pygame.display.flip()

BTW: to center element on screen you can use 

screen_rect = screen.get_rect()

and later

 self.rect.center = screen_rect.center

The same way you can center other things - ie. text on button.

Upvotes: 1

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