如何更改类中变量的值[Python]

Question

我想添加一个更新self.ScoreP变量的值的函数

我在屏幕上显示了一个数字，它打印出ScoreP (updateScoreBoard())的当前值。它是准确的和完美的工作，但我也打印出getScoreP。无论当前分数是多少，ScoreP都会打印0。

            import pygame

            class ScoreBoard():

                def __init__(self):
                    self.WIDTH = 1024
                    self.HEIGHT = 576
                    self.WHITE = (255, 255, 255)
                    self.BLACK = (0,0,0)
                    self.minFont = "font/Minecraft.ttf"
                    self.scoreFont = pygame.font.Font(self.minFont, 75)
                    self.ScoreP = 0
                    self.ScorePStr = str(self.ScoreP)
                    self.ScoreO = 0
                    self.ScoreOStr = str(self.ScoreO)
                    self.ScorePWidth, self.ScorePHeight = self.scoreFont.size(str(self.ScoreP))
                    self.ScoreOWidth, self.ScoreOHeight  = self.scoreFont.size(str(self.ScoreO))
                    self.ScorePX = (self.WIDTH/2)-self.ScorePWidth*2
                    self.ScorePY = 10
                    self.ScoreOX = self.WIDTH/2 + self.ScoreOWidth
                    self.ScoreOY = 10






                def updateScoreBoard(self, screen):
                        pygame.draw.rect(screen, self.BLACK, [self.ScorePX, self.ScorePY, self.ScorePWidth, self.ScorePHeight])
                        scorePRender = self.scoreFont.render("{}".format(self.ScoreP), False, self.WHITE)
                        screen.blit(scorePRender, (self.ScorePX,  self.ScorePY))

                        pygame.draw.rect(screen, self.BLACK, [self.ScoreOX, self.ScoreOY, self.ScoreOWidth, self.ScoreOHeight])
                        scoreORender = self.scoreFont.render("{}".format(self.ScoreO), False, self.WHITE)
                        screen.blit(scoreORender, (self.ScoreOX,  self.ScoreOY))
                        pygame.display.flip()


                def updateScore(self, playerIncrease, opponentIncrease):
                    self.ScoreP += playerIncrease
                    self.ScorePStr = self.ScoreP

                    self.ScoreO += opponentIncrease 
                    self.ScoreOStr = self.ScoreO


                def getScoreP(self):
                    return self.ScoreP

但是，getScore函数会打印出0，尽管游戏会正确跟踪并重绘比分

提前谢谢你

Answer 1

在这里我不认为我改变了太多，但它是有效的。另外，下次给我们你的全部代码，包括你如何测试它，因为问题可能就在那里。我在最后添加了一个测试，你可以删除它。

import pygame
import random
class ScoreBoard:
    def __init__(self,w,h):
        pygame.font.init()
        self.WIDTH = w
        self.HEIGHT = h
        self.screen = pygame.display.set_mode((1024,576))
        self.WHITE = (255, 255, 255)
        self.BLACK = (0,0,0)
        self.minFont = None
        self.scoreFont = pygame.font.Font(self.minFont, 75)
        self.ScoreP = 0
        self.ScoreO = 0
        self.ScorePWidth, self.ScorePHeight = self.scoreFont.size(str(self.ScoreP))
        self.ScoreOWidth, self.ScoreOHeight  = self.scoreFont.size(str(self.ScoreO))
        self.ScorePX = (self.WIDTH/2)-self.ScorePWidth*2
        self.ScorePY = 10
        self.ScoreOX = self.WIDTH/2 + self.ScoreOWidth
        self.ScoreOY = 10
    def updateScoreBoard(self):
        self.ScorePWidth, self.ScorePHeight = self.scoreFont.size(str(int(self.ScoreP)))
        self.ScoreOWidth, self.ScoreOHeight  = self.scoreFont.size(str(int(self.ScoreO)))
        screen = self.screen    
        screen.fill(self.WHITE)

        pygame.draw.rect(screen, self.BLACK, [self.ScorePX, self.ScorePY, self.ScorePWidth, self.ScorePHeight])
        scorePRender = self.scoreFont.render("{}".format(int(self.ScoreP)), False, self.WHITE)
        screen.blit(scorePRender, (self.ScorePX,  self.ScorePY))

        pygame.draw.rect(screen, self.BLACK, [self.ScoreOX, self.ScoreOY, self.ScoreOWidth, self.ScoreOHeight])
        scoreORender = self.scoreFont.render(str(int(self.ScoreO)), False, self.WHITE) 
        screen.blit(scoreORender, (self.ScoreOX,  self.ScoreOY))

        pygame.display.flip()       


    def updateScore(self, playerIncrease, opponentIncrease):
        self.ScoreP += playerIncrease
        self.ScoreO += opponentIncrease 


    def getScoreP(self):
        return self.ScoreP
running = True
a = ScoreBoard(1024,576) 
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
            break   
    a.updateScore(random.random()/10,random.random()/10)
    a.updateScoreBoard()