CODEWITHSUNDEEP
pythonclasspygame
Chad Leftwich
Chad Leftwich

Reputation: 33

Class Implementations With Pygame

I'm attempting to write a program using pygame to create a class called Dot() that allows me to implement Dot objects, which will be small, 2 pixel radius circles. I'm trying to create them within my main game loop, but I keep getting the error message "name 'x' is not defined". I'm not sure why that would be the case. If it were going to throw such an error I would expect it to first say that color isn't defined, since it's listed first in the list of parameters. I'm not sure if my error is caused by the way I wrote the class itself or if it's something in my implementation of the class (I'm almost positive I did this wrong, but I've tried it a few different ways as well and keep getting the same error), or if it's or both.

#!/usr/bin/env python

import random, pygame, sys
from random import randint 
from pygame.locals import *

pygame.init()

FPS = 30
fpsClock = pygame.time.Clock()

DISPLAYSURF = pygame.display.set_mode((700, 700), 0, 32)
pygame.display.set_caption('Version02')

WHITE = (255, 255, 255)
RED      = (255,   0,   0)
GREEN    = (  0, 255,   0)
BLUE     = (  0,   0, 255)

class Dot():
    def __init__(self, color, x, y):
        self = pygame.draw.circle(DISPLAYSURF, color, (x, y), 2, 0)
        self.color = getDotColor()
        self.x = getDotX()
        self.y = getDotY() 

    def getDotColor():
        color = random.choice([RED,  GREEN, BLUE])
        return color

    def getDotX():
        x = randint(0, 700)
        return x

    def getDotY():
        y = randint(0, 700)
        return y   

while True: #main game loop    
    DISPLAYSURF.fill(WHITE)

    dot = Dot(color, x, y)#I'm not exactly sure how to implement this correctly  

    for event in pygame.event.get(): 
        if event.type == QUIT:
            pygame.quit() 
            sys.exit()

    pygame.display.update()
    fpsClock.tick(FPS)

Upvotes: 0

Views: 45

Answers (1)

Valentino
Valentino

Reputation: 7361

dot = Dot(color, x, y)#I'm not exactly sure how to implement this correctly

You do not define a x or y value before. Your error comes from here. Same for the color. If you want color and dot coordinates to be randomly created each time you create a Dot object (at least I understand this is what you are looking for) you have to rewrite the __init__ method:

class Dot():
    def __init__(self):
        self.color = getDotColor()
        self.x = getDotX()
        self.y = getDotY()
        self = pygame.draw.circle(DISPLAYSURF, self.color, (self.x, self.y), 2, 0)

Upvotes: 1

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