如何在PyGame中拖动多个图像？

Question

import pygamefrom pygame.locals import *pygame.display.init()screen = pygame.display.set_mode((1143,677 ))img = pygame.image.load(r"C:\Users\ga-sa\Downloads\As.png")imgPos = pygame.Rect((0, 0), (0, 0))LeftButton = 0while 1: for e in pygame.event.get():    if e.type == QUIT: exit(0)    if e.type == MOUSEMOTION:        if e.buttons[LeftButton]:            rel = e.rel            imgPos.x += rel[0]            imgPos.y += rel[1]screen.fill(0)screen.blit(img, imgPos)pygame.display.flip()pygame.time.delay(30)我试图用多个图像来实现这一点，并且图像总是重叠，并且只能移动一个图像，所以尝试了以下方法： import pygame from pygame.locals import * pygame.display.init() screen = pygame.display.set_mode((1143,677 )) img = pygame.image.load(r"C:\Users\ga-sa\Downloads\As.png") img1 = pygame.image.load(r"C:\Users\ga-sa\Downloads\03.png") imgPos = pygame.Rect((0, 0), (0, 0)) imgPos1 = pygame.Rect((1, 1), (1, 1)) LeftButton = 0 while 1:     for e in pygame.event.get():    if e.type == QUIT: exit(0)    if e.type == MOUSEMOTION:        if e.buttons[LeftButton]:            rel = e.rel            imgPos.x += rel[0]            imgPos.y += rel[1]screen.fill(0)screen.blit(img, imgPos)screen.blit (img1, imgPos1)pygame.display.flip()pygame.time.delay(30)所以图像重叠并且可以移动第二个图像，我想让两个图像用鼠标移动，我希望分别移动图像

Answer 1

PyGame 中的单位是像素。您的对象重叠，因为垂直和水平位置的差异只有一个像素。

imgPos = pygame.Rect((0, 0), (0, 0))

imgPos1 = pygame.Rect((1, 1), (1, 1))

增加对象的距离并根据相应图像的大小设置矩形的大小。例如

imgPos = pygame.Rect((0, 0), img.get_size())

offsetX = img.get_width()

imgPos1 = pygame.Rect((offsetX, 0), img1.get_size())

或者，可以从 by生成pygame.Rect对象。矩形的位置必须由关键字参数设置：pygame.Surfaceget_rect

imgPos = img.get_rect(topleft = (0, 0))
imgPos1 = img1.get_rect(topleft = (img.get_width(), 0))

---

如果要选择要移动的图像，则需要添加一个变量来指示当前选择的图像：

current_image = None

单击图像时，会发生变化current_image。用于collidepoint()验证鼠标是否单击了图像：

if e.type == pygame.MOUSEBUTTONDOWN:

    if imgPos.collidepoint(e.pos):

        current_image = 0

    elif imgPos1.collidepoint(e.pos):

        current_image = 1

    else: 

        current_image = None

移动img如果current_image == 0和移动img1如果current_image == 1：

if e.type == MOUSEMOTION:

    if e.buttons[LeftButton]:

        rel = e.rel

        if current_image == 0:

            imgPos.x += rel[0]

            imgPos.y += rel[1]

        elif current_image == 1:

            imgPos1.x += rel[0]

            imgPos1.y += rel[1]

import pygame

from pygame.locals import *

pygame.display.init()

screen = pygame.display.set_mode((1143,677 ))

img = pygame.image.load(r"C:\Users\ga-sa\Downloads\As.png")

img1 = pygame.image.load(r"C:\Users\ga-sa\Downloads\03.png")

imgPos = img.get_rect(topleft = (20, 20))

imgPos1 = img1.get_rect(topleft = (60, 20))

current_image = None

LeftButton = 0

while 1:

    for e in pygame.event.get():

        if e.type == QUIT:

            pygame.quit()

            exit(0)

        if e.type == pygame.MOUSEBUTTONDOWN:

            if imgPos.collidepoint(e.pos):

                current_image = 0

            elif imgPos1.collidepoint(e.pos):

                current_image = 1

            else: 

                current_image = None

        if e.type == MOUSEMOTION:

            if e.buttons[LeftButton]:

                rel = e.rel

                if current_image == 0:

                    imgPos.x += rel[0]

                    imgPos.y += rel[1]

                elif current_image == 1:

                    imgPos1.x += rel[0]

                    imgPos1.y += rel[1]

   

    screen.fill(0)

    screen.blit(img, imgPos)

    screen.blit (img1, imgPos1)

    pygame.display.flip()

    pygame.time.delay(30)