python Turtle Snake 游戏中的碰撞

Question

我正在编写一个代码，其中有一个乌龟必须通过的迷宫。唯一的问题是我无法弄清楚如何与所有墙壁产生碰撞。我一直无法找到一种在不对墙的每个坐标进行限制的情况下创建障碍的方法。我只能访问海龟和随机模块。有没有办法做到这一点？这是我的代码：

import turtle

screen = turtle.Screen()
tr=turtle.Turtle()
screen.tracer(0)

mazeWidth=150
tr = turtle.Turtle()
tr.width(5)
tr.speed(0)
tr.penup()
tr.goto(-mazeWidth,190)
def drawMazeSection(color):
  tr.pencolor("lightblue")
  tr.penup()
  tr.goto(-20,200)
  tr.pendown()
  tr.goto(20,200)
  tr.penup()
  tr.goto(-20,-200)
  tr.pendown()
  tr.goto(20,-200)
  tr.penup()
  tr.pencolor("black")
  tr.goto(-200,200)
  tr.pendown()
  tr.goto(-200,-160)
  tr.begin_fill()
  tr.goto(-180,-160)
  tr.goto(-180,-200)
  tr.goto(-200,-200)
  tr.end_fill()
  tr.goto(-20,-200)
  tr.penup()
  tr.goto(20,-200)
  tr.pendown()
  tr.begin_fill()
  tr.goto(200,-200)
  tr.goto(200,200)
  tr.goto(20,200)
  tr.goto(20,140)
  tr.goto(80,140)
  tr.goto(80,180)
  tr.goto(180,180)
  tr.goto(180,-80)
  tr.goto(100,-80)
  tr.goto(100,-140)
  tr.goto(20,-140)
  tr.goto(20,-200)
  tr.end_fill()
  tr.penup()
  tr.goto(20,160)
  tr.pendown()
  tr.begin_fill()
  tr.goto(-80,160)
  tr.goto(-80,140)
  tr.goto(-60,140)
  tr.goto(-60,160)
  tr.end_fill()
  tr.goto(-60,120)
  tr.goto(-20,120)
  tr.goto(-20,100)
  tr.goto(40,100)
  tr.penup()
  tr.goto(120,140)
  tr.pendown()
  tr.begin_fill()
  tr.goto(140,140)
  tr.goto(140,100)
  tr.goto(120,100)
  tr.goto(120,120)
  tr.goto(120,140)
  tr.end_fill()
  tr.goto(140,100)
  tr.goto(80,100)
  tr.goto(80,80)
  tr.goto(80,60)
  tr.begin_fill()
  tr.goto(140,60)
  tr.goto(140,20)
  tr.goto(100,20)
  tr.goto(100,60)
  tr.end_fill()
  tr.goto(20,60)
  tr.goto(20,-100)
  tr.goto(20,-40)
  tr.goto(-20,-40)
  tr.goto(-20,-100)
  tr.goto(-60,-100)
  tr.penup()
  tr.goto(-60,-140)
  tr.pendown()
  tr.goto(-60,-160)
  tr.goto(-140,-160)
  tr.goto(-140,-120)
  tr.goto(-160,-120)
  tr.goto(-160,-40)
  tr.penup()
  tr.goto(-60,-60)
  tr.pendown()
  tr.goto(-60,0)
  tr.goto(-20,0)
  tr.goto(-20,40)
  tr.goto(-60,40)
  tr.goto(-60,80)
  tr.goto(-120,80)
  tr.goto(-120,200)
  tr.penup()
  tr.goto(-160,160)
  tr.pendown()
  tr.goto(-160,40)
  tr.goto(-40,40)
  tr.penup()
  tr.goto(60,20)
  tr.pendown()
  tr.goto(60,-80)
  tr.begin_fill()
  tr.goto(60,-40)
  tr.goto(140,-40)
  tr.goto(140,-20)
  tr.goto(60,-20)
  tr.end_fill()
  tr.penup()
  tr.goto(-200,0)
  tr.pendown()
  tr.goto(-100,0)
  tr.begin_fill()
  tr.goto(-100,-120)
  tr.goto(-100,-80)
  tr.goto(-120,-80)
  tr.goto(-120,0)
  tr.end_fill()
  tr.penup()
  tr.goto(-20,-140)
  tr.pendown()
  tr.goto(-20,-200)
  
for color in ["#FF0000","#0000FF","#00FF00"]:
  drawMazeSection(color)
  

screen.tracer(1)    
from turtle import Turtle, Screen

wn = Screen()
wn.bgcolor('darkgreen')

tr.color('red')
tr.penup()

tr.speed(40)
speed = 1.5

wn.mainloop()
tr.penup()
tr.goto(20,-180)
tr.pendown()
tr.shape('turtle')
tr.color("#DB148E")
tr.width(5)
tr.left(90)

tr.penup()
tr.goto(0,-200)
def travel():
    tr.forward(speed)
    wn.ontimer(travel, 10)

wn.onkey(lambda: tr.setheading(90), 'w')
wn.onkey(lambda: tr.setheading(180), 'a')
wn.onkey(lambda: tr.setheading(0), 'd')
wn.onkey(lambda: tr.setheading(270), 's')

wn.listen()
travel()

Answer 1

我认为你需要 turtle.window_width() 和 turtle.window_height 函数

获取程序的宽度和高度

width, height = turtle.window_width(), turtle.window_height()

## Gets the boundaries for the x coordinates 
minX, maxX = -width/2, width/2

## Sets the boundaries for the y coordinates
minY, maxY = -height/2, height / 2

## Checks if the turtle hits the boundaries
def check():
    if tr.xcor() <= maxX:
       tr.setheading(0)
    if tr.xcor() >= minX:
       tr.setheading(180)
    if tr.ycor() >= minY:
       tr.setheading(270)
    if tr.ycor() <= maxY:
       tr.setheading(90)