Pygame图像定位

Question

试图将这两张图片并排放在pygame的界面中，但是我收到了错误

TypeError：blit的目标位置无效

import pygame
from pygame.locals import *
import urllib.request
from urllib.request import urlopen

pygame.init() #initialize pygame

image1_url = "http://polygonblog.com.www32.zoner-asiakas.fi/wp-content/uploads/2010/05/underwater.jpg"
image1_str = urllib.request.urlretrieve(image1_url, "sea.png")

image2_url = "http://www.seascapemodeling.org/seascape_projects/Slicks.jpg"
image2_str = urllib.request.urlretrieve(image2_url, "surface.png")

white = (255,255,255)
screen = pygame.display.set_mode((600,440))
sea = pygame.image.load('sea.png').convert()
sea_rect = sea.get_rect()
sea_rect.x = 220
sea_rect.y = 600
sea_rect = sea_rect.left
surface = pygame.image.load('surface.png').convert()
surface_rect = surface.get_rect()
surface_rect.x = 220
surface_rect.y = 600
surface_rect = surface_rect.right
screen.fill(white)

while True:
    screen.blit(surface, surface_rect)
    screen.blit(sea,sea_rect)
    pygame.display.update()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            raise SystemExit

Answer 1

dest的pygame.Surface.blit()参数（第二个参数）必须是位置（x，y）或矩形（x，y，w，h）。

任务完成后

sea_rect = sea_rect.left

surface_rect = surface_rect.right

sea_rect和surface_rect只是单个积分值。注意.left返回矩形的左x坐标，.right返回右x坐标。 .topleft和.topright将返回矩形的顶部（x，y）角坐标。见pygame.Rect。

略过这2行

sea_rect = sea_rect.left surface_rect = surface_rect.righ

而是通过这个位置

screen.blit(surface, surface_rect.topright)
screen.blit(sea, sea_rect.topleft

或矩形直接到.blit()：

screen.blit(surface, surface_rect)
screen.blit(sea, sea_rect)