乌龟为什么不转？

Question

我的乌龟不会随着我的按键移动。当您删除 self.forward 部分时，它会很好地转动，但是当它移动时它不起作用。我怎样才能让乌龟在移动时转动。另外，之前在我的代码中不起作用的是什么。此外，未加载标记为背景的图像。我该如何解决？谢谢。代码：

import turtle
import turtle as trtl

color = input("Please select color of turtle: ")


# classes
class enemy(turtle.Turtle):
    def __init__(self):
        turtle.Turtle.__init__(self, shape='square')
        self.color('white')
        self.turtlesize(2)
        self.penup()
        self.goto(0, 240)


class player(turtle.Turtle):

    def __init__(self, x=True):
        turtle.Turtle.__init__(self, shape='turtle')
        self.x = x
        self.color(color)
        self.turtlesize(2)
        self.hideturtle()
        self.penup()
        self.goto(4.440892098500626e-14, -180.0)
        self.setheading(90)
        self.showturtle()
        while self.x:
            self.forward(10)
            self.speed('slowest')

    def turning_left(self):
        self.x = False
        self.left(30)
        self.x = True

    def turning_right(self):
        self.x = False
        self.right(30)
        self.x = True


enemy1 = enemy()
shooter = player()

# controls


wn = trtl.Screen()

wn.onkeypress(shooter.turning_right, 'Right')
wn.onkeypress(shooter.turning_left, 'Left')
wn.onkeypress(shooter.turning_right, 'd')
wn.onkeypress(shooter.turning_left, 'a')

wn.listen()
wn.bgpic('backround.gif')
turtle.done()

Answer 1

下面是对您的代码的进一步修改的简化，使乌龟不断向前移动，但您可以通过键盘让它转动：

from turtle import Screen, Turtle

screen = Screen()

class player(Turtle):

    def __init__(self):
        super().__init__(shape='turtle')
        self.hideturtle()
        self.turtlesize(2)
        self.setheading(90)
        self.penup()
        self.backward(180.0)
        self.showturtle()

        self.move()

    def move(self):
        self.forward(1)
        screen.ontimer(self.move)

    def turn_left(self):
        self.left(15)

    def turn_right(self):
        self.right(15)

shooter = player()

screen.onkeypress(shooter.turn_right, 'Right')
screen.onkeypress(shooter.turn_left, 'Left')
screen.listen()

screen.mainloop()

乌龟为什么不转？

Why is the turtle not turning?

python

turtle-graphics