Question

我正在尝试学习python使用pygame创建一个小型视频游戏，当我决定将所有代码更改为OOP时，一切都会停止工作。我做了很多尝试，改变了整个设计模式两次，但仍然无法正常工作。

现在，我将代码减少到最低限度，但仍然找不到错误的地方

你们可以帮我吗？

import pygame
from pygame.locals import *


class App(pygame.sprite.Sprite):
    def __init__(self):
        self._WINDOW_WIDTH = 640
        self._WINDOW_HEIGHT = 480
        self._WINDOW_SIZE = (self._WINDOW_WIDTH, self._WINDOW_HEIGHT)
        self._BGIMAGE = pygame.image.load("resources/misrecursos/fondo.jpg")
        self.clock = pygame.time.Clock()
        self._TITLE = "Space Invades"

        self._run = True
        self._fullSC = False
        self._screen = None

    def mainloop(self):
        pygame.init()
        pygame.display.set_caption(self._TITLE)
        self._screen = pygame.display.set_mode(self._WINDOW_SIZE, 0, 32)
        keys = pygame.key.get_pressed()

        while self._run:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    self._run = False
            if keys[K_ESCAPE]:
                self._run = False
            if keys[K_f]:
                self._screen = pygame.display.set_mode(self._WINDOW_SIZE, pygame.FULLSCREEN | pygame.HWSURFACE | pygame.DOUBLEBUF, 32)

            self._screen.blit(self._BGIMAGE, (0,0))
            pygame.display.update()
        pygame.quit()


if __name__ == "__main__":

    app = App()
    app.mainloop()

Answer 1

问题是您一开始只读取一次按键。您需要在主循环中反复进行操作。请参阅以下所有CAPS注释指示的更改：

import pygame
from pygame.locals import *


class App(pygame.sprite.Sprite):
    def __init__(self):
        self._WINDOW_WIDTH = 640
        self._WINDOW_HEIGHT = 480
        self._WINDOW_SIZE = (self._WINDOW_WIDTH, self._WINDOW_HEIGHT)
        self._BGIMAGE = pygame.image.load("resources/misrecursos/fondo.jpg")
        self.clock = pygame.time.Clock()
        self._TITLE = "Space Invades"

        self._run = True
        self._fullSC = False
        self._screen = None

    def mainloop(self):
        pygame.init()
        pygame.display.set_caption(self._TITLE)
        self._screen = pygame.display.set_mode(self._WINDOW_SIZE, 0, 32)
####### keys = pygame.key.get_pressed()  # <---- NOT HERE!

        while self._run:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    self._run = False
            keys = pygame.key.get_pressed()  # <---- DOWN HERE INSIDE GAME LOOP.
            if keys[K_ESCAPE]:
                self._run = False
            if keys[K_f]:
                self._screen = pygame.display.set_mode(
                    self._WINDOW_SIZE,
                    pygame.FULLSCREEN | pygame.HWSURFACE | pygame.DOUBLEBUF, 32)

            self._screen.blit(self._BGIMAGE, (0,0))
            pygame.display.update()

        pygame.quit()


if __name__ == "__main__":

    app = App()
    app.mainloop()

Answer 2

啊...很简单。您应该移动行：

    keys = pygame.key.get_pressed()

self._run循环时在里面：）

例如：

def mainloop(self):
    pygame.init()
    pygame.display.set_caption(self._TITLE)
    self._screen = pygame.display.set_mode(self._WINDOW_SIZE, 0, 32)

    while self._run:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self._run = False
        keys = pygame.key.get_pressed()
        if keys[K_ESCAPE]:
            self._run = False
        if keys[K_f]:
            self._screen = pygame.display.set_mode(self._WINDOW_SIZE, pygame.FULLSCREEN | pygame.HWSURFACE | pygame.DOUBLEBUF, 32)

        self._screen.blit(self._BGIMAGE, (0,0))
        pygame.display.update()
    pygame.quit()

pygame中无法在全屏和窗口模式之间切换

2 个答案: