pygame
求大神们帮忙看看这段代码出啥问题了，第二次点击的时候总是显示错误# 小游戏 turtle 裁剪
import pygame
import sys
from pygame.locals import *
# 初始化pygame
pygame.init()
size = width, height = 600, 400
bg = (255, 255, 255)# RGB
# 创建指定大小的窗口 返回一个Surface的对象
screen = pygame.display.set_mode(size)
# 设置窗口标题
pygame.display.set_caption('初次见面，请多多关照')
# 加载图片
turtle = pygame.image.load('new_turtle.jpg')
# 获取图像的位置矩形
position = turtle.get_rect(center=(300, 200))
# select=0 未选择 select=1 正在选择 select=2 选择完成
select = 0
select_rect = pygame.Rect(0, 0, 0, 0)
# drag=0 未拖拽 drag=1 正在拖拽 drag=2 拖拽完成
drag = 0
while True:
# 每次操作都是一个事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
# 第一次点击，选择范围
if select == 0 and drag == 0:
pos_start = event.pos
select = 1
# 第二次点击，拖拽图像
elif select == 2 and drag == 0:
capture = screen.subsurface(select_rect).copy()
cap_rect = capture.get_rect()
drag = 1
# 第三次点击，初始化
elif select == 2 and drag == 2:
select = 0
drag = 0
elif event.type == MOUSEBUTTONUP:
if event.button == 1:
# 第一次释放，结束选择
if select == 1 and drag == 0:
pos_stop = event.pos
select = 2
# 第二次释放，拖拽完成
elif select == 2 and drag == 1:
drag = 2
screen.fill(bg)
screen.blit(turtle, position)
if select:
mouse_pos = pygame.mouse.get_pos()
if select == 1:
pos_stop = mouse_pos
select_rect.left, select_rect.top = pos_start
select_rect.width, select_rect.height = pos_stop - pos_start, pos_stop - pos_start
pygame.draw.rect(screen, (0, 0, 0), select_rect, 1)
if drag:
if drag == 1:
cap_rect.center = mouse_pos
screen.blit(capture, cap_rect)
# 更新界面
pygame.display.flip()
C:\ProgramData\Anaconda3\python.exe D:/PycharmProjects/pythonProject/pygame/game_turtle/turtle4.py
pygame 2.0.2 (SDL 2.0.16, Python 3.8.8)
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
File "D:/PycharmProjects/pythonProject/pygame/game_turtle/turtle4.py", line 44, in <module>
capture = screen.subsurface(select_rect).copy()
pygame.error: Out of memory
Process finished with exit code 1 import pygame
import sys
from pygame.locals import *
pygame.init()
size = width, height = 800, 600
bg = (255, 255, 255)
clock = pygame.time.Clock()
screen = pygame.display.set_mode(size)
pygame.display.set_caption("FishC Demo")
turtle = pygame.image.load("turtle.png")
# 0 -> 未选择，1 -> 选择中，2 -> 完成选择
select = 0
select_rect = pygame.Rect(0, 0, 0, 0)
# 0 -> 未拖拽，1 -> 拖拽中，2 -> 完成拖拽
drag = 0
position = turtle.get_rect()
position.center = width // 2, height // 2
while True:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
# 第一次点击，选择范围
if select == 0 and drag == 0:
pos_start = event.pos
select = 1
# 第二次点击，推拽图像
elif select == 2 and drag == 0:
capture = screen.subsurface(select_rect).copy()
cap_rect = capture.get_rect()
drag = 1
# 第三次点击，初始化
elif select == 2 and drag == 2:
select = 0
drag = 0
elif event.type == MOUSEBUTTONUP:
if event.button == 1:
# 第一次释放，结束选择
if select == 1 and drag == 0:
pos_stop = event.pos
select = 2
# 第二次释放，结束拖拽
if select == 2 and drag == 1:
drag = 2
screen.fill(bg)
screen.blit(turtle, position)
# 实时绘制选择框
if select:
mouse_pos = pygame.mouse.get_pos()
if select == 1:
pos_stop = mouse_pos
select_rect.left, select_rect.top = pos_start
select_rect.width, select_rect.height = pos_stop - pos_start, pos_stop - pos_start
pygame.draw.rect(screen, (0, 0, 0), select_rect,1)
# 拖拽裁剪的图像
if drag:
if drag == 1:
cap_rect.center = mouse_pos
screen.blit(capture, cap_rect)
pygame.display.flip()
clock.tick(30)
叼辣条闯世界 发表于 2021-10-17 10:08
感谢，照着你的代码改了以后，可以正常运行了，但是感觉两个代码貌似没太大差别，不知道到底是哪里的问题
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