识别用户点击特定乌龟？

Question

所以我有太阳系的模型。它创建了8个（对不起的冥王星）乌龟对象，它们在StepAll函数中绕太阳运行，该函数在屏幕上同时递增地移动每只乌龟。我想添加一个功能，允许用户点击特定的星球，并显示有关所点击的独特乌龟的特定信息（显示有关行星的信息等）

这可能吗？

如果不是我想到按钮，但让它们与行星一起移动似乎很棘手......任何帮助都会受到赞赏。谢谢！

Answer 1

您可以使用turtle.onclick()

为每个海龟个人功能分配

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()

Answer 2

恰好我已经four inner planet simulator left over from answering another SO question我可以插入onclick()方法，看看这对移动海龟的效果如何：

""" 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，它运作正常。有时行星会在textinput()对话框面板可见的情况下停在其轨道上，有时则不会。我会根据需要将此问题留给OP解决。