是否可以在pygame中对角移动对象？

Question

我是 python 的初学者，我刚开始学习 pygame。我正在制作一幅画，画出一个螺旋形图，并将每个颜色组的圆圈从中心移开。我的意思是，因为有 7 种颜色，每种颜色有 5 个圆圈，我想将所有圆圈从中心移开，从所有红色圆圈开始，然后是蓝色，然后是绿色等。但问题是，所有每个颜色组5个圆圈必须一次从中心移开，然后当第一组移动完成后，继续一个接一个地移动其他组，直到它画出几乎像手镯一样的图画。

我想知道如何沿对角线移动圆圈，就像在海龟中一样。我还需要知道如何逐个移动组中的圆圈。我是否制作一个列表并将圆圈存储在列表中？老实说，我不知道。我基本上已经几乎放弃尝试这样做了，哈哈。下面是我当前的代码，如果你运行它，你会看到我只能移动整个 spirpograph，而不是圆圈。任何帮助将不胜感激。

import pygame
import math
import time
#setting colors
WHITE = (255, 255, 255)
BLUE = (0, 0, 255)
GREEN = (0, 255,  0)
RED = (255, 0, 0)
ORANGE = (255, 127, 0)
YELLOW = (255, 255, 0)
PURPLE = (160, 32, 240)
#setting what order the colors go in
listCircleColor = (RED, BLUE, GREEN, ORANGE, YELLOW, PURPLE, WHITE)
#how many circles per color
intGroup = 5
#the space between each circle
turnangle = 360/35
#width of screen
width = 600
#height of screen
height = 600
#radius of circles
radius = 100
#making the screen
screen = pygame.display.set_mode((width, height))
#if the code is running, then continue
running = True
##.draw.circle(screen, BLUE, (0, 0), radius, width=2)
circles = []
circles_rect = []
#draw

alpha = turnangle


for i in range(intGroup):
    for cl in listCircleColor:
        surfacetemp = pygame.Surface((width, height))
        surfacetemp = surfacetemp.convert_alpha()
        surfacetemp.fill((0, 0, 0, 0))
        ##circlerect = pygame.rect
        if alpha > 0 and alpha < 90:
            circlerect = pygame.draw.circle(surfacetemp, cl, (300 + radius * math.cos(math.radians(alpha)), 300 + radius * math.sin(math.radians(alpha))), radius, width=2)
        # second quarter of circles
        if alpha > 90 and alpha < 180:
            circlerect = pygame.draw.circle(surfacetemp, cl, (300 - radius * math.cos(math.radians(180 - alpha)), 300 + radius * math.sin(math.radians(180 - alpha))), radius, width=2)
        # third quarter of circles
        if alpha > 180 and alpha < 270:
            circlerect = pygame.draw.circle(surfacetemp, cl, (300 - radius * math.cos(math.radians(270 - alpha)), 300 - radius * math.sin(math.radians(270 - alpha))), radius, width=2)
        # last quarter of circles
        if alpha > 270 and alpha < 360:
            circlerect = pygame.draw.circle(surfacetemp, cl, (300 + radius * math.cos(math.radians(360 - alpha)), 300 - radius * math.sin(math.radians(360 - alpha))), radius, width=2)

        alpha = alpha + turnangle
        ##circles.append(circlerect)
        circles.append(surfacetemp)
        circles_rect.append(surfacetemp.get_rect())



# move"

#exit only when user clicks on exit button
running = True
clock = pygame.time.Clock()


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


    screen.fill((0, 0, 0))

    for crect, ret in zip(circles, circles_rect):
        ret.right += 5
        ret.left += 5
        screen.blit(crect, ret)

    pygame.display.flip()
    clock.tick(20)

Answer 1

您将圆圈沿 x 轴（左右）移动两次：

ret.right += 5
ret.left += 5

您需要沿 x 和 y 轴移动圆圈：

ret.right += 5
ret.top += 5

使用centerx 和centery 代替left 和top 更容易理解（参见pygame.Rect）：

ret.centerx += 5
ret.centery += 5