python - 碰撞检测程序在 Turtle 中不起作用

Question

当我运行该程序时，它卡住并且无法工作。该程序的要点是，当由键绑定(bind)控制的用户控制的 turtle 的 x 和 y 位置坐标与其他 turtle 的 x 和 y 位置坐标的距离小于 10 像素时，打印出一些内容。

import turtle
import random
wn = turtle.Screen()
wn.setup(width = 450, height = 450)
player = turtle.Turtle()
player2 = turtle.Turtle()

def up():

    y  = player.ycor()
    y = y + 5
    player.sety(y)
    if y>=310:
        player.sety(y-15)

def down():
    y = player.ycor()
    y = y - 5
    player.sety(y)
    if y<-310:
        player.sety(y+15)


def left():
    x = player.xcor()
    x = x - 5
    player.setx(x)
    if x<=-625:
        player.setx(x+15)


def right():
    x = player.xcor()
    x = x + 5
    player.setx(x)
    if x>=625:
        player.setx(x-15)

player.penup()
player.setpos(0,0)
player.showturtle()
player.shape("square")
wn.bgcolor("green")
player2.shape("square")
player2.penup()
player2.setpos(300,300)
player2.showturtle()

turtle.listen()
turtle.onkeypress(up,"Up")

turtle.onkeypress(left,"Left")

turtle.onkeypress(right,"Right")

turtle.onkeypress(down, "Down")


def checkcollision(player,player2):
        if abs(player.xcor() - player2.xcor()) < 10 and abs(player.ycor() - player2.ycor()) < 10:
            player.write("collision")


while True:
    checkcollision(player,player2)

Answer 1

我认为它卡住是因为代码中的循环:

while True:
    checkcollision(player,player2)

它总是检查碰撞，将该代码移动到移动函数Up、Down、Left、Right 等等，然后在移动后调用它。