Question

我一直在youtube上关注Meloonatic Melons的Pygame教程（我改变了一些代码，但直到现在它都工作得更好），我遇到了一个问题。我已经制作了2个额外的文件来实现名为全局和 textureLoader 。错误在这里：

import pygame, sys, time, random
from scripts.textureLoader import *
from scripts.globals import *

pygame.init()

#Important Stuff

#Variables
clock = pygame.time.Clock()
FPS = 120
tileSize = 32

#Colours
white = (0, 0, 0)
black = (255, 255, 255)
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
orange = (255, 165, 0)

#Fonts
fpsFont = pygame.font.Font("C:\\Windows\\Fonts\\Verdana.ttf", 20)

#Display

def display():
    global displayHeight, displayWidth, gameDisplay, gameCaption

    displayHeight, displayWidth = 600, 800

    gameDisplay = pygame.display.set_mode((displayWidth, displayHeight),
    pygame.HWSURFACE | pygame.DOUBLEBUF)
    gameCaption = pygame.display.set_caption("Testy RPG")

run = True
while run:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                Globals.cameraMove = 1
            elif event.key == pygame.K_DOWN:
                Globals.cameraMove = 2
            elif event.key == pygame.K_LEFT:
                Globals.cameraMove = 3
            elif event.key == pygame.K_RIGHT:
                Globals.cameraMove = 4
        elif event.type == pygame.KEYUP:
           Globals.cameraMove = 0

    #Logic

    # - FPS Counter
    FPSColour = black
    cFPS = int(clock.get_fps())
    if cFPS < 10:
        FPSColour = red
    elif cFPS > 10 and cFPS < 60:
        FPSColour = orange
    else:
        FPSColour = green

    # - Camera
    if Globals.cameraMove == 1:
        Globals.cameraY -= 1
    elif Globals.cameraMove == 2:
        Globals.cameraY += 1
    elif Globals.cameraMove == 3:
        Globals.cameraX -= 1
    elif Globals.cameraMove == 4:
        Globals.cameraX += 1

    # - Player

    #Render Graphics
    gameDisplay.blit(Background.NightSky, (0, 0)) #this is where the error is

    # - Render Tiles
    for x in range(0, 640, tileSize):
        for y in range(0, 480, tileSize):
            gameDisplay.blit(Tiles.Grass, (x + Globals.cameraX, y + 
    Globals.cameraY))

    gameDisplay.blit(fpsFont.render("FPS: " + str(cFPS), True, FPSColour), 
    (0, 0))
    gameDisplay.blit(PlayerFrontBack.PlayerFront, (0, 0))
    pygame.display.update()
    clock.tick(120)

pygame.quit()
sys.exit()

这是我的textureLoader文件：

import pygame

pygame.init()

class Tiles:

    global Size
    Size = 32

    def loadTexture(file, size):
        bitmap = pygame.image.load(file)
        bitmap = pygame.transform.scale(bitmap, (Size, Size))
        surface = pygame.Surface((Size, Size), pygame.HWSURFACE | pygame.SRCALPHA)
        surface.blit(bitmap, (0, 0))
        return surface

    Grass = loadTexture("Graphics\\grass.png", Size)
    Stone = loadTexture("Graphics\\stone.png", Size)
    Water = loadTexture("Graphics\\water.png", Size)

class Background:

    global backgroundWidth, backgroundHeight
    backgroundWidth = 800
    backgroundHeight = 600

    def loadBackground(file, size):
        backgroundImg = pygame.image.load(file)
        backgroundImg = pygame.transform.scale(backgroundImg, (backgroundWidth, backgroundHeight))
        backgroundSurf = pygame.Surface((backgroundWidth, backgroundHeight), pygame.HWSURFACE | pygame.SRCALPHA)
        backgroundSurf.blit(backgroundImg, (0, 0))
        return backgroundSurf

    NightSky = loadBackground("Graphics\\sky.png", (backgroundWidth, backgroundHeight))

class PlayerFrontBack:

    global playerWidth, playerHeight
    playerWidth = 19
    playerHeight = 55

    def loadPlayerFrontBack(file, size):
        playerImg = pygame.image.load(file)
        playerImg = pygame.transform.scale(playerImg, (playerWidth, playerHeight))
        playerSurf = pygame.Surface((playerWidth, playerHeight), pygame.HWSURFACE | pygame.SRCALPHA)
        playerSurf.blit(playerImg, (0, 0))
        return playerSurf

    PlayerFront = loadPlayerFrontBack("Graphics\\manStill.png", (19, 55))

class PlayerLeftRight:

    global playerWidth2
    playerWidth2 = 15

    def loadPlayerLeftRight(file, size):
        playerImg = pygame.image.load(file)
        playerImg = pygame.transform.scale(playerImg, (playerWidth2, playerHeight))
        playerSurf = pygame.Surface((playerWidth2, playerHeight), pygame.HWSURFACE | pygame.SRCALPHA)
        playerSurf.blit(playerImg, (0, 0))
        return playerSurf

这是我的全局文件：

class Globals:
    cameraX = 0
    cameraY = 0
    cameraMove = 0

追溯是：

"D:\Programming\Python\Python 3.6.2\python.exe" 
D:/Programming/Python/Assets/Projects/Games/rpg.py
Traceback (most recent call last):
  File "D:/Programming/Python/Assets/Projects/Games/rpg.py", line 81, in 
<module>
    gameDisplay.blit(Background.NightSky, (0, 0))
NameError: name 'gameDisplay' is not defined

感谢您查看我的代码，祝您找到最佳解决方案！

Answer 1

您只需要调用display()来声明和初始化函数中的全局变量。

你的代码看起来很奇怪，我会重构很多东西。我建议将其发布在codereview.stackexchange.com。

错误加载Image Python 3.6.2，Pygame 1.9.3

1 个答案: