参数必须是 pygame.Surface 而不是 str

Question

我正在创建一个小型匹配游戏，但在显示图像时卡住了。 当我尝试使用 blit() 函数显示图像时，它会显示错误。 我尝试在 blit 之前加载图像，但它仍然显示错误。 下面是示例代码：

import pygame
from time import sleep
from pygame import display, image, event, transform
import os
import random

pygame.init()

ASSET_DIR = 'Processed_image'
ASSET_FILES = [i for i in os.listdir(ASSET_DIR)]
for i in range(len(ASSET_FILES)):
   image_path = os.path.join(ASSET_DIR, ASSET_FILES[i])
   print(image_path)

animal_count = dict((img, 0) for img in ASSET_FILES)

def available_animals():
    # All animals whose count is less than two
    return [a for a, c in animal_count.items() if c < 2]

class animal:
    def __init__(self, i):
        self.i = i
        self.row = i // NUM_TILES_SIDE
        self.col = i % NUM_TILES_SIDE

        self.img_name = random.choice(available_animals())
        animal_count[self.img_name] += 1
        self.img_path = os.path.join(ASSET_DIR, self.img_name)
        self.img_load = image.load(self.img_path)
        self.img_load = transform.scale(self.img_load, (IMAGE_SIZE - 2 * MARGIN, IMAGE_SIZE - 2 * MARGIN))

        self.box = self.img_load.copy()
        self.box.fill((200, 200, 200))

        self.skip = False

tiles = [animal(i) for i in range(0, NUM_TILES_TOTAL)]

current_images = []

def find_index(x, y):
    row = y // IMAGE_SIZE
    col = x // IMAGE_SIZE
    index = row * NUM_TILES_SIDE + col
    return index

display.set_caption("Hello")

screen = display.set_mode((960, 960))

matched = image.load('/home/cropped_trump.jpg')

running = True
while running:
    current_events = event.get() # List of events
    for e in current_events:
        if e.type == pygame.QUIT:
            print(e.type)
            running = False

        if e.type == pygame.KEYDOWN:
            if e.key == pygame.K_ESCAPE:
                print(e.type)
                running = False

        if e.type == pygame.MOUSEBUTTONDOWN:
            mouse_x, mouse_y = pygame.mouse.get_pos()
            index = find_index(mouse_x, mouse_y)
        
        if index not in current_images:
            current_images.append(index)
        if len(current_images)>2:
            current_images = current_images[1:]
        print(current_images)

    screen.fill((255, 255, 255))

    total_skipped = 0

    for _, tile in enumerate(tiles):
        image_i = tile.img_name if tile.i in current_images else tile.box
        if not tile.skip:
            screen.blit(image_i, (tile.col * IMAGE_SIZE + MARGIN, tile.row * IMAGE_SIZE + MARGIN))
        else:
            total_skipped += 1

    display.flip()

    if len(current_images) == 2:
        index1, index2 = current_images
    if tiles[index1].img_name == tiles[index2].img_name:
        tiles[index1].skip = True
        tiles[index2].skip = True
        sleep(0.2)
        screen.blit(matched, (0, 0))
        sleep(0.2)
        current_images = []

    if total_skipped == len(tiles):
        running = False 

我收到错误：

Traceback (most recent call last):
  File "/home/shashi/Matchers/new.py", line 93, in <module>
    screen.blit(image_i, (tile.col * IMAGE_SIZE + MARGIN, tile.row * IMAGE_SIZE + MARGIN))
TypeError: argument 1 must be pygame.Surface, not str

我无法弄清楚。 可能是什么原因？？

Answer 1

这是一个错字。它必须是image_i = tile.img_load 而不是image_i = tile.img_name：

image_i = tile.img_name if tile.i in current_images else tile.box

image_i = tile.img_load if tile.i in current_images else tile.box