win变量未设置为False

Question

我正在用pygame做一个乒乓球游戏。check_win()函数检查是否有一方获胜，并且由于某种原因，当检测到时，积分计数器会在右侧继续上升，但不会在左侧上升。因此，当它检测到球击中左墙时，它会按预期工作，但当它击中右侧时，它就会不断增加得分。

这里是代码

import pygame
pygame.init()
class Pad:
def __init__(self, x, win, score_x):
self.win = win
self.x = x
self.y = 250
self.speed = 5
self.score = 0
self.score_x = score_x
self.color = (255, 255, 255)
self.font = pygame.font.Font("font.ttf", 25)
self.base = pygame.Rect(0, 0, 30, 100)
self.base.center = (self.x, self.y)
self.collide_base = pygame.Rect(0, 0, 10, self.base.height)
def render(self, type_):
if type_ == 0:
self.collide_base.right = self.base.right
if type_ == 1:
self.collide_base.left = self.base.left
self.collide_base.y = self.base.y
pygame.draw.rect(self.win, self.color, self.base)
def move(self, keys, type_):
if type_ == 0:
if keys[pygame.K_w]:
self.base.centery -= self.speed
if keys[pygame.K_s]:
self.base.centery += self.speed
elif type_ == 1:
if keys[pygame.K_UP]:
self.base.centery -= self.speed
if keys[pygame.K_DOWN]:
self.base.centery += self.speed
def collide_edge(self):
if self.base.bottom >= self.win.get_height():
self.base.y -= self.speed
if self.base.top <= 0:
self.base.y += self.speed
def draw_score(self):
score = self.font.render(str(self.score), False, self.color)
self.win.blit(score, (self.score_x, self.win.get_height() - (self.win.get_height() - 20)))
class Ball:
def __init__(self, win):
self.win = win
self.color = (255, 255, 255)
self.leftWin = False
self.rightWin = False
self.speedx = 5
self.speedy = 5
self.x = self.win.get_width() / 2
self.y = self.win.get_height() / 2
self.base = pygame.Rect(0, 0, 20, 20)
self.base.center = (self.x, self.y)
def render(self):
self.base.center = (self.x, self.y)
pygame.draw.ellipse(self.win, self.color, self.base)
def move(self):
if self.base.bottom >= self.win.get_height():
self.speedy *= -1
if self.base.right >= self.win.get_width():
self.rightWin = True
if self.base.top <= 0:
self.speedy *= -1
if self.base.left <= 0:
self.leftWin = True
self.x += self.speedx
self.y += self.speedy

class Game:
def __init__(self):
self.width = 750
self.height = 500
self.running = True
self.color = (0, 0, 0)
self.fps = 60
self.win = pygame.display.set_mode((self.width, self.height), pygame.RESIZABLE)
self.clock = pygame.time.Clock()
self.pad1 = Pad(50, self.win, self.width / 2 + 25)
self.pad2 = Pad(700, self.win, self.width / 2 - 40)
self.ball = Ball(self.win)
self.line = []
def draw_line(self):
for x in range(20):
if x % 2 == 0:
rect = pygame.Rect(0, 0, 20, 40)
rect.center = (self.width / 2, x * 40)
self.line.append(rect)
for rect in self.line:
pygame.draw.rect(self.win, (255, 255, 255), rect)
def check_pad(self):
if self.ball.base.colliderect(self.pad1.base):
self.ball.x += 10
self.ball.speedx *= -1
if self.ball.base.colliderect(self.pad2.base):
self.ball.x -= 10
self.ball.speedx *= -1
def check_win(self):
if self.ball.leftWin:
self.ball.base.center = (self.width / 2, self.height / 2)
self.ball.leftWin = False
self.ball.speedx = 5
self.ball.speedy = 5
self.pad1.score += 1
if self.ball.rightWin:
self.ball.base.center = (self.width / 2, self.height / 2)
self.ball.rightWin = False
self.ball.speedx = 5
self.ball.speedy = 5
self.pad2.score += 1

def run(self):
while self.running:
self.clock.tick(self.fps)
self.win.fill(self.color)
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.running = False
keys = pygame.key.get_pressed()
self.draw_line()
self.check_pad()
self.check_win()
self.ball.render()
self.ball.move()
self.pad1.render(0)
self.pad1.move(keys, 0)
self.pad1.collide_edge()
self.pad1.draw_score()
self.pad2.render(1)
self.pad2.move(keys, 1)
self.pad2.collide_edge()
self.pad2.draw_score()
pygame.display.update()
pygame.quit()
if __name__ == '__main__':
Game().run()

Answer 1

您忘记更新self.ball.x和self.ball.y。注意，self.base.center是从函数render中的self.x、self.y设置的。

class Game:
# [...]
def check_win(self):
if self.ball.leftWin:
self.ball.base.center = (self.width / 2, self.height / 2)
self.ball.x, self.ball.y = self.ball.base.center           # <---
self.ball.leftWin = False
self.ball.speedx = 5
self.ball.speedy = 5
self.pad1.score += 1
if self.ball.rightWin:
self.ball.base.center = (self.width / 2, self.height / 2)
self.ball.x, self.ball.y = self.ball.base.center             # <---
self.ball.rightWin = False
self.ball.speedx = 5
self.ball.speedy = 5
self.pad2.score += 1