Question

我们正在尝试用python制作游戏，但是我们只能使用pyqt5库，所以，我们找不到从进程移动标签的方法，它给了我们错误：不可挑选的对象问题出在widget中，我们试图把它放在管道中，但是得到了同样的错误。也试图从类Enemy制作qwidget，但问题是一样的。

from PyQt5.QtWidgets import QMainWindow, QLabel, QDesktopWidget,QApplication, QGridLayout
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import multiprocessing as mp
##CONSTANTS##
MAXLIFE = 3
ALIEN_WIDTH = 32
ALIEN_HEIGHT = 32
ALIEN_ROWS = 3
ALIEN_COLS = 10
ALIEN_STEP_CONST = 60
class Enemy:
def __init__(self, xp, yp, picture):
    self.x = xp
    self.y = yp
    self.steps = 0
    self.pic = picture
def set_position(self, xp, yp):
    self.x = xp
    self.y = yp
def update(self):
     while(True):
        if self.steps < ALIEN_STEP_CONST:
            self.steps += 1
            self.x += 1
            self.pic.setGeometry(self.x, self.y, ALIEN_WIDTH, ALIEN_HEIGHT)
            self.pic.updateGeometry()
        elif self.steps == ALIEN_STEP_CONST:
             self.steps = ALIEN_STEP_CONST*2

        elif self.steps > ALIEN_STEP_CONST:
           self.steps -= 1
            self.x -= 1
            self.pic.setGeometry(self.x, self.y, ALIEN_WIDTH, ALIEN_HEIGHT)
            self.pic.updateGeometry()
class SpaceInvaders(QMainWindow):
def __init__(self):
    super().__init__()enter code here
    self.initUI()

def initUI(self):
    '''initiates application UI'''
    self.setWindowIcon(QIcon('images/launch'))
    self.setFixedSize(800, 800)
    grid = QGridLayout()
    grid.setSpacing(10)
    self.setStyleSheet("background-image: url(images/space);")
    self.center()
    self.setWindowTitle('Space Invaders')
    enemies = []
    for i in range(0, ALIEN_ROWS):
        for j in range(0, ALIEN_COLS):
            pic = QLabel(self)
            e = Enemy((ALIEN_WIDTH+45)*j, (ALIEN_HEIGHT+30)*i + 50, pic)
            enemies.append(e)
            pixmap = QPixmap("images/alien.png")
            pic.setPixmap(pixmap)
            pic.move((ALIEN_WIDTH + 45)*j, (ALIEN_HEIGHT + 30)*i + 50)
            pic.show()
            '''mp.Process(target=e.update).start()''' #this line
    self.show()
def center(self):
    '''centers the window on the screen'''
    screen = QDesktopWidget().screenGeometry()
    size = self.geometry()
    self.move((screen.width() - size.width()) / 2,
              (screen.height() - size.height()) / 2)

if __name__ == '__main__':
app = QApplication([])
space = SpaceInvaders()
sys.exit(app.exec_())

如何在循环中移动图片？

0 个答案: