Question

我正在建造一个你必须在道路上躲避砖块的游戏。块会出现但窗口中央的小白线（通道分隔符是块，所以它们可以移动）不会，当我加载它时会崩溃游戏！

这是代码：

import pygame
import time
import random

pygame.init()
             #Colour Acronym Chart
#|  Black = Blck  |  Grey = Gry   | Dark = Drk    | White = Wht
#|  Deep = Dp     |  Metal = Mtl  | Light = Lht   | Cyan = Cyn
#|  Blue = Bl     |  Baby = Bby   | Maroon = Mrn  |
#|  Red = Rd      |  Fire = Fr    | Orange = Orng |

# Window Colour Index
Wht = (255, 255, 255)
Blck = (0, 0, 0)            
Dp_Gry = (32, 32, 32)       
Mtl_Gry = (96, 96, 96)    
Lht_Gry = (160, 160, 160)

Dp_Bl = (0, 0, 102)
Lht_Bby_Bl = (0, 128, 255)
Cyn = (0, 153, 153)

Drk_Mrn = (102, 0, 0)
Fr_Rd = (255, 0, 0)
Lht_Orng = (255, 128, 0)
#END OF COLOUR MODULE

display_width = 800
display_height = 600



gameDisplay = pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption('Hard Drive')
clock = pygame.time.Clock()

bg = pygame.image.load("asphalt.jpg")


carImg = pygame.image.load('car1.png')
car_width = 45
car_height = 45

def things(thingx, thingy, thingw, thingh, color):
    pygame.draw.rect(gameDisplay, color, [thingx, thingy, thingw, thingh])

def middle_road(roadx, roady, roadw, roadh, color):
    pygame.draw.rect(gameDisplay, color, [roadx, roady, roadw, roadh])

def car(x,y):
    gameDisplay.blit(carImg,(x,y))

def text_objects(text, font):
    textSurface = font.render(text, True, Blck)
    return textSurface, textSurface.get_rect()

def message_display(text):
    largeText = pygame.font.Font('freesansbold.ttf',115)
    TextSurf, TextRect = text_objects(text, largeText)
    TextRect.center = ((display_width/2),(display_height/2))
    gameDisplay.blit(TextSurf, TextRect)

    pygame.display.update()

    time.sleep(2)

    game_loop()



def crash():
    message_display('You Crashed')

def game_loop():
    x = (display_width * 0.45)
    y = (display_height * 0.8)

    x_change = 0
    thing_starty = -600
    thing_speed = 7
    thing_width = 100
    thing_height = 100

    middle_road_starty = display_height
    middle_road_speed = 7
    middle_road_width = 50
    middle_road_height = 75
    middle_road_startx = (0, display_width/2)

    thing_startx = random.randrange(0, display_width)

    gameExit = False

    while not gameExit:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -5
                if event.key == pygame.K_RIGHT:
                    x_change = 5

            if event.type == pygame.KEYUP:
                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                    x_change = 0

        x += x_change

        gameDisplay.fill(Wht)

        #INSIDE OF THE GAME LOOP
        gameDisplay.blit(bg, (0, 0))

        #thingx, thingy, thingw, thingh, color
        things(thing_startx, thing_starty, thing_width, thing_height, Cyn)
        thing_starty += thing_speed

        car(x,y)
        middle_road(middle_road_startx, middle_road_starty, middle_road_width, middle_road_height, Wht)
        middle_road_starty += middle_road_speed

        if x > display_width - car_width or x < 0:
            crash()

        if thing_starty > display_height:
            thing_starty = 0 - thing_height
            thing_startx = random.randrange(0, display_width)

        if y < thing_starty+thing_height:
            print('y crossover')

            if x > thing_startx and x < thing_startx + thing_width or x + car_width > thing_startx and x + car_width < thing_startx + thing_width:
                print('x crossover')
                crash()


        pygame.display.update()
        clock.tick(60)

game_loop()
pygame.quit()
quit()

现在出现错误：

Python 3.2.1 (default, Jul 10 2011, 21:51:15) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>> 
Traceback (most recent call last):
  File "C:\Users\Aidan\Desktop\PyGame\frame.py", line 144, in <module>
    game_loop()
  File "C:\Users\Aidan\Desktop\PyGame\frame.py", line 123, in game_loop
    middle_road(middle_road_startx, middle_road_starty, middle_road_width, middle_road_height, Wht)
  File "C:\Users\Aidan\Desktop\PyGame\frame.py", line 48, in middle_road
    pygame.draw.rect(gameDisplay, color, [roadx, roady, roadw, roadh])
TypeError: Rect argument is invalid
>>> ================================ RESTART ================================
>>>

为什么Rect无效？如果它适用于“thing”对象，为什么它不能用于“middle_road”对象？我错过了什么吗？

Answer 1

你的问题是middle_road_startx是一个元组而不是int：

middle_road_startx = (0, display_width/2)

看看剩下的代码，我想这就是你想要的：

middle_road_startx = random.randrange(0, display_width/2)

修改

然而，不是您的问题的一部分，在您表达希望对象位于屏幕中间的评论中，请替换以下行：

middle_road_starty = display_height middle_road_speed = 7 # if you want it static in the middle why would it have speed? middle_road_width = 50 middle_road_height = 75 middle_road_startx = (0, display_width/2)

使用：

middle_road_speed = 7 # if you want it static in the middle why would it have speed? middle_road_width = 50 middle_road_height = 75 middle_road_startx = (display_width/2) - (middle_road_width/2) middle_road_starty = (display_height/2) - (middle_road_height/2)

首先计算屏幕中间(display_width/2)，(display_height/2)，然后偏移您想要在那里绘制的对象的宽度/高度(middle_road_width/2)，(middle_road_height/2)

Python：一些pygame对象没有出现

1 个答案: