识别用户点击特定乌龟吗？

Question

所以我有一个太阳系的模型。它创建了8个（对不起冥王星）乌龟对象，它们以StepAll函数的方式围绕太阳运行，在屏幕上同时递增地移动每个海龟。我想添加一个功能，允许用户点击一个特定的行星，让它显示关于被点击的独特海龟的特定信息（显示行星信息等）

这有可能吗？在

如果不是的话，我已经想到了按钮，但是让它们跟着行星移动似乎很棘手。。。任何帮助都将不胜感激。谢谢！在

Answer 1

碰巧我有一个four inner planet simulator left over from answering another SO question，我们可以把onclick()方法插入其中，看看这对移动的海龟有多有效：

""" Simulate motion of Mercury, Venus, Earth, and Mars """

from turtle import Turtle, Screen

planets = {
    'mercury': {'diameter': 0.383, 'orbit': 58, 'speed': 7.5, 'color': 'gray'},
    'venus': {'diameter': 0.949, 'orbit': 108, 'speed': 3, 'color': 'yellow'},
    'earth': {'diameter': 1.0, 'orbit': 150, 'speed': 2, 'color': 'blue'},
    'mars': {'diameter': 0.532, 'orbit': 228, 'speed': 1, 'color': 'red'},
}

def setup_planets(planets):
    for planet in planets:
        dictionary = planets[planet]
        turtle = Turtle(shape='circle')

        turtle.speed("fastest")  # speed controlled elsewhere, disable here
        turtle.shapesize(dictionary['diameter'])
        turtle.color(dictionary['color'])
        turtle.penup()
        turtle.sety(-dictionary['orbit'])
        turtle.pendown()

        dictionary['turtle'] = turtle

        turtle.onclick(lambda x, y, p=planet: on_click(p))

    revolve()

def on_click(planet):

    p = screen.textinput("Guess the Planet", "Which planet is this?")

    if p and planet == p:
        pass  # do something interesting

def revolve():

    for planet in planets:
        dictionary = planets[planet]
        dictionary['turtle'].circle(dictionary['orbit'], dictionary['speed'])

    screen.ontimer(revolve, 50)

screen = Screen()

setup_planets(planets)

screen.mainloop()

一般来说，它工作得很好。有时当textinput()对话框面板可见时，行星会停在它们的轨道上，其他时候则看不到。在

Answer 2

您可以使用turtle.onclick()为每个海龟分配单独的函数

import turtle

#  - functions  -

def on_click_1(x, y):
    print('Turtle 1 clicked:', x, y)

def on_click_2(x, y):
    print('Turtle 2 clicked:', x, y)

def on_click_screen(x, y):
    print('Screen clicked:', x, y)

#  - main  -

a = turtle.Turtle()
a.bk(100)
a.onclick(on_click_1)

b = turtle.Turtle()
b.fd(100)
b.onclick(on_click_2)

turtle.onscreenclick(on_click_screen)

turtle.mainloop()