我正在用pygame在python中制作pang游戏。当我按向右箭头，并且播放器转到屏幕边缘时，无论我是否按向左箭头，他都会闪烁，有时会卡在边缘上。我试图将他的职位固定在我的球员班上，但没有任何效果，我写的东西对我来说似乎是正确的。您能帮我解决这个错误吗？我不知道什么会影响我的播放器。
import sys
import math
from random import randrange
import pygame as pg
import self
import time
from pygame.sprite import Group
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (34, 177, 76)
RED = (255, 0, 0)
SCREEN_WIDTH = 1200
SCREEN_HEIGHT = 720
class Ball(pg.sprite.Sprite):
def __init__(self, pos, *groups):
super().__init__(groups)
self.image = pg.Surface((80, 80), pg.SRCALPHA)
col = RED
pg.draw.circle(self.image, col, (40, 40), 40)
self.rect = self.image.get_rect(center=pos)
self.vel = pg.math.Vector2(5, 0).rotate(randrange(360))
self.pos = pg.math.Vector2(pos)
self.mask = pg.mask.from_surface(self.image)
def update(self):
self.pos += self.vel
self.rect.center = self.pos
if self.rect.left < 10 or self.rect.right > 1170:
self.vel.x *= -1
if self.rect.top < 30 or self.rect.bottom > 650:
self.vel.y *= -1
def overlaps(self, other_rect):
return self.rect.colliderect(other_rect)
class BallSmall(pg.sprite.Sprite):
def __init__(self, pos, *groups):
super().__init__(groups)
self.image = pg.Surface((50, 50), pg.SRCALPHA)
col = RED
pg.draw.circle(self.image, col, (25, 25), 25)
self.rect = self.image.get_rect(center=pos)
self.vel = pg.math.Vector2(5, 0).rotate(randrange(360))
self.pos = pg.math.Vector2(pos)
self.mask = pg.mask.from_surface(self.image)
def update(self):
self.pos += self.vel
self.rect.center = self.pos
if self.rect.left < 10 or self.rect.right > 1170:
self.vel.x *= -1
if self.rect.top < 30 or self.rect.bottom > 650:
self.vel.y *= -1
def overlaps(self, other_rect):
return self.rect.colliderect(other_rect)
class Player(pg.sprite.Sprite):
def __init__(self):
pg.sprite.Sprite.__init__(self)
self.movex = 0
self.movey = 0
self.lives = 5
self.images = []
# load hero image
player_image = pg.image.load("pangs1.png").convert()
player_image.set_colorkey(GREEN)
playerS_image = pg.image.load("pangsh3.png").convert()
playerS_image.set_colorkey(GREEN)
player_mini_img = pg.transform.scale(player_image, (30, 21))
player_mini_img.set_colorkey(GREEN)
self.images.append(player_image)
self.images.append(playerS_image)
self.image = self.images[0]
self.rect = self.image.get_rect()
def is_alive(self):
return self.hp > 0
def control(self, x, y):
self.movex = x
self.movey = y
def update(self):
self.rect.x = self.rect.x + self.movex
self.rect.y = self.rect.y + self.movey
if self.rect.left < 0 or self.rect.right > 1200:
self.rect.x = -self.rect.x
if self.rect.top < 30 or self.rect.bottom > 650:
self.rect.y = 500
def attack(self):
dmg = 1
self.lives = self.lives - dmg
class Bullet(pg.sprite.Sprite):
""" This class represents the bullet . """
def __init__(self):
# Call the parent class (Sprite) constructor
super().__init__()
self.images = []
for i in range(1, 5):
bullet_image = pg.image.load('bullet' + str(i) + '.png').convert()
bullet_image.set_colorkey(GREEN)
self.images.append(bullet_image)
self.image = self.images[0]
self.rect = self.image.get_rect()
def update(self):
""" Move the bullet. """
self.rect.y -= 7
font_name = pg.font.match_font('Times New Roman')
def draw_text(surf, text, size, x, y):
font = pg.font.Font(font_name, size)
text_surface = font.render(text, True, BLACK)
text_rect = text_surface.get_rect()
text_rect.midtop = (x, y)
surf.blit(text_surface, text_rect)
def draw_lives(surf, x, y, lives, img):
for i in range(lives):
img_rect = img.get_rect()
img_rect.x = x + 30 * i
img_rect.y = y
surf.blit(img, img_rect)
pg.init()
screen = pg.display.set_mode([SCREEN_WIDTH, SCREEN_HEIGHT])
backdropbox = screen.get_rect()
pg.display.set_caption("My Game")
done = False
shoot = False
b = True
# Used to manage how fast the screen updates
clock = pg.time.Clock()
sprite_group = pg.sprite.Group()
ball = Ball((320, 240))
ball_list = pg.sprite.Group()
ballSmall_list = pg.sprite.Group()
ballSmall = BallSmall((320, 240))
# List of each bullet
bullet_list = pg.sprite.Group()
score = 0
# load intro
intro_image = pg.image.load("intro.png").convert()
# load start
start_image = pg.image.load("start.png").convert()
# load image bg
lvl1_image = pg.image.load("lvl1.jpg").convert()
lvl2_image = pg.image.load("lvl2.png").convert()
# lvl2 transition
trans2_image = pg.image.load("lvl2trans.png").convert()
# load image over
game_overI = pg.image.load("over.png").convert()
# load image won
won_image = pg.image.load("won.png").convert()
# load hero image shooting
playerS_image = pg.image.load("pangsh3.png").convert()
playerS_image.set_colorkey(GREEN)
# load hero image
player_image = pg.image.load("pangs1.png").convert()
player_image.set_colorkey(GREEN)
# lives
player_mini_img = pg.transform.scale(player_image, (30, 21))
player_mini_img.set_colorkey(GREEN)
# load sound
shot_sound = pg.mixer.Sound("shot.wav")
menu_music = pg.mixer.Sound("theme.wav")
win_sound = pg.mixer.Sound("win.wav")
loss_sound = pg.mixer.Sound("loss.wav")
# spawn player
player = Player()
# current hero pos
player.rect.x = 600
player.rect.y = 500
player_list = pg.sprite.Group()
player_list.add(player)
# how fast move
steps = 4
# initialisation of needed checks
hit = False
over = False
start = False
won = False
check = True
lvl1 = False
lvl2 = False
menu_music.play()
screen.blit(intro_image, [0, 0])
pg.display.flip()
time.sleep(3)
previous_time = pg.time.get_ticks()
# -------- Main Program Loop -----------
while not done:
# --- Main event loop
for event in pg.event.get():
if event.type == pg.QUIT:
done = True
if not start:
screen.blit(start_image, [0, 0])
if event.type == pg.KEYDOWN:
if event.key == ord("1"):
start = True
lvl1 = True
elif event.key == ord("2"):
done = True
if start:
if not won:
# --- Game logic should go here
if event.type == pg.KEYDOWN:
if event.key == pg.K_LEFT or event.key == ord('a'):
player.control(-steps, 0)
if event.key == pg.K_RIGHT or event.key == ord('d'):
player.control(steps, 0)
if event.key == pg.K_UP or event.key == ord('w'):
shoot = True
shot_sound.play()
# Fire a bullet if the user uses keyup
current_time = pg.time.get_ticks()
if current_time - previous_time > 300:
previous_time = current_time
bullet = Bullet()
# Set the bullet so it is where the player is
bullet.rect.x = player.rect.x
bullet.rect.y = player.rect.y
# Add the bullet to the lists
sprite_group.add(bullet)
bullet_list.add(bullet)
elif event.type == pg.KEYUP:
if event.key == pg.K_LEFT or event.key == ord('a') or event.key == pg.K_RIGHT or event.key == ord('d') :
player.control(0, 0)
# lvl 1
if lvl1:
while b:
for i in range(0, 3):
ball_list.add(Ball((320, 240)))
sprite_group.add(ball_list)
b = False
sprite_group.update()
ball.update()
screen.blit(lvl1_image, [0, 0])
# lvl 2
elif lvl2:
while b:
for i in range(0, 6):
ball_list.add(Ball((320, 240)))
sprite_group.add(ball_list)
b = False
sprite_group.update()
ball.update()
screen.blit(lvl2_image, [0, 0])
# lvl 3 placeholder
for bullet in bullet_list:
# See if it hit a block
ball_hit_list = pg.sprite.spritecollide(bullet, ball_list, True)
# For each block hit, remove the bullet and add to the score
for ball in ball_hit_list:
bullet_list.remove(bullet)
sprite_group.remove(bullet)
ballSmall_list.add(BallSmall((320, 240)))
sprite_group.add(ballSmall_list)
ballSmall_list.add(BallSmall((320, 240)))
sprite_group.add(ballSmall_list)
score += 1
print("score=", score)
# Remove the bullet if it flies up off the screen
if bullet.rect.y < -10:
bullet_list.remove(bullet)
sprite_group.remove(bullet)
for bullet in bullet_list:
# See if it hit a block
ballSmall_hit_list = pg.sprite.spritecollide(bullet, ballSmall_list, True)
# For each block hit, remove the bullet and add to the score
for ball in ballSmall_hit_list:
bullet_list.remove(bullet)
sprite_group.remove(bullet)
score += 2
print("score=", score)
# Remove the bullet if it flies up off the screen
if bullet.rect.y < -10:
bullet_list.remove(bullet)
sprite_group.remove(bullet)
if pg.sprite.spritecollide(player, ball_list, False, pg.sprite.collide_mask) or pg.sprite.spritecollide(player,
ballSmall_list,
False,
pg.sprite.collide_mask):
hit = True
if hit and count:
player.attack()
print("hp=", player.lives)
if player.lives <= 0:
over = True
if ball.rect.bottom > 500:
ball.vel.y *= -1
count = False
else:
count = True
if score == 15:
lvl2 = True
if lvl1:
b = True
screen.blit(trans2_image, [0, 0])
pg.display.flip()
time.sleep(2)
lvl1 = False
if score == 45:
won = True
if over:
menu_music.stop()
if check:
loss_sound.play()
check = False
screen.blit(game_overI, [0, 0])
elif won:
menu_music.stop()
if check:
win_sound.play()
check = False
screen.blit(won_image, [0, 0])
else:
player.update()
player_list.draw(screen)
while shoot:
if lvl1:
screen.blit(lvl1_image, [0, 0])
elif lvl2:
screen.blit(lvl2_image, [0, 0])
screen.blit(playerS_image, [player.rect.x, player.rect.y])
shoot = False
sprite_group.draw(screen)
if not won:
draw_lives(screen, SCREEN_WIDTH - 150, 5, player.lives, player_mini_img)
draw_text(screen, str(score), 36, SCREEN_WIDTH / 2, 10)
# --- Go ahead and update the screen with what we've drawn.
pg.display.flip()
# --- Limit to 60 frames per second
clock.tick(60)
# Close the window and quit.
pg.quit()
答案 0 :(得分：0)
您的代码具有很多依赖性（图像，声音等），因此我无法在计算机上运行它。
但是，我看到的是（Player类，update方法）：
if self.rect.left < 0 or self.rect.right > 1200:
self.rect.x = -self.rect.x
假设self.rect.right = 1201，self.rect.x = 1101。1201 > 1200因此self.rect.x变为-1101。 -1101 < 0使得self.rect.x变为1101，而self.rect.right变为1201。这是一个循环，也是问题所在。根据{{1}}和self.movex的组合，self.rect.x可能会卡住，也可能不会（如果卡住，可能会卡住）。
要解决此问题，您应该更改player方法。例如：
update确切的解决方案取决于您要如何处理与边框的碰撞。