Question

我正在努力修复一些代码以使其看起来更好，当我完成代码复制并完成修复后，我运行它并且没有任何反应。加载两件事然后一切都清除了。我找不到问题。

原始代码有效

import turtle
from random import randint
import time
"""-------------"""
t=turtle.Turtle()
s=turtle.Screen()
cube=turtle.Turtle()
title=turtle.Turtle()
"""--------------"""
WIDTH, HEIGHT=300, 300
LENGTH=(5)
"""--------------"""
x1 = randint(cube.xcor()/2 - WIDTH/2, WIDTH/2 - cube.xcor()/2)
y1 = randint(cube.ycor()/2 - HEIGHT/2, HEIGHT/2 - cube.ycor()/2)
"""------------"""
s.setup(WIDTH,HEIGHT)
"""------------"""
t.width(1)
s.bgcolor("dark green")
"""-----------------"""
#Title
title.color("Red")
title.hideturtle()
title.penup()
title.goto(0,130)
title.pendown()
title.write("SNAK3",align="center", font=("Lobster", 20, "Bold"))
"""-------------"""
class Food():
    def block():
        cube.hideturtle()
        cube.color("red")
        cube.penup()
        cube.goto(x1,y1)    
        cube.speed(0)
        cube.begin_fill()
        for i in range(4):
            cube.pendown()
            cube.forward(10)
            cube.right(90)
        cube.end_fill()
"""---------------"""
t.shape("square")
class Player():
    def move_up():
        player=False
        while player==False:
            for i in range(10):
                t.forward(LENGTH)
                t.delay(25)
            t.clear()
            x, y = t.position()
            if not -WIDTH / 2 < x < WIDTH / 2 or not -HEIGHT / 2 < y < HEIGHT / 2:
                player=True
                t.hideturtle()
                cube.clear()
                title.clear()
                title.penup()
                title.goto(0,0)
                title.pendown()
                title.write("GAMEOVER", align="center", font=("lobster", 18, "bold"))
    def move_left():
        t.speed(0)
        t.left(90)
        t.speed(3)
    def move_right():
        t.speed(0)
        t.right(90)
        t.speed(3)
"""------------"""
food=Food.block()
player1=Player()
"""----------------"""
s.onkey(Player.move_up,"up")
s.onkey(Player.move_left,"left")
s.onkey(Player.move_right,"right")
s.listen()
"""--------------"""
collision=Collision_check.check()
"""--------------------"""
t1=t.xcor(),t.ycor()
cube1=cube.xcor(),cube.ycor()
class Collision_check():
    def check():
        crash=True
        if t1.xcor()>=cube.xcor() and t1.xcor()<=cube.xcor()+10 and t1.ycor>=cube.ycor() and t1.ycor()<=cube.ycor+10:
            cube.clear()
            cube.goto(x1,y1)
            LENGTH=+1
        elif t1!=cube1:
            crash=False
        return crash

修正代码稍作修改

import turtle
from random import randint

t=turtle.Turtle()
s=turtle.Screen()
cube=turtle.Turtle()
title=turtle.Turtle()

t.width(1)
s.bgcolor("dark green")

#Title
title.color("red")
title.hideturtle()
title.penup()
title.goto(0,130)
title.write("SNAK3",align="center",font=("lobster",20,"Bold"))

WIDTH, HEIGHT=300, 300
LENGTH=[5]

s.setup(WIDTH,HEIGHT)

#Random cords
x1=randint(cube.xcor()/2-WIDTH/2, WIDTH/2-cube.xcor()/2)
y1=randint(cube.ycor()/2-HEIGHT/2, HEIGHT/2-cube.ycor()/2)

class Food():
    def block():
        cube.hideturtle()
        cube.color("red")
        cube.penup()
        cube.goto(x1,y1)
        cube.speed(0)
        cube.begin_fill()
        cube.pendown()
        for i in range(4):
            cube.forward(10)
            cube.right(90)
        cube.end_fill()

t.shape("square")
class Player():
    def forward():
        player=False
        while player==False:
            for i in range(10):
                t.forward(LENGTH)
                t.delay(25)
            t.clear
            x, y=t.position()
            if not -WIDTH / 2 < x < WIDTH / 2 or not -HEIGHT / 2 < y < HEIGHT/2:
                player=True
                cube.clear()
                t.hideturtle()
                title.clear()
                title.penup()
                title.goto(0,0)
                title.pendown()
                title.write("GAMEOVER", align="center", font=("lobster",18,"bold"))
def left():
        t.speed(0)
        t.left(90)
        t.speed(3)
    def right():
        t.speed(0)
        t.right(90)
        t.speed(3)

food=Food.block()
player1=Player()

s.onkey(player1.forward,("up"))
s.onkey(player1.left,("left"))
s.onkey(player1.left,("right"))

class Collision_check():
    def check():
        crash=True
        if t.xcor()>=cube.xcor() and t.xcor()<=cube.xcor()+10 and t.ycor()>=cube.ycor() and t.ycor()<=cube.ycor()+10:
            cube.clear()
            cube.goto(x1,y1)
            LENGTH+=1
            if cube.xcor()>=t.xcor() and cube.xcor()<=t.xcor()+10 and cube.ycor()>=t.ycor() and cube.ycor()<=t.ycor()+10:
            cube.clear()
            cube.goto(x1,y1)
            LENGTH+=1
        else:
            crash=False
        return crash
collision=Collision_check.check()

上面代码中的所有内容与原始代码几乎完全相同。我已经多次查看代码并找不到问题。我已经排除了collision_check不是问题，所有的类都按顺序排列。我能想到的另一件事就是我拼错了。

Answer 1

让我们首先解决一些基本事实：

此代码的任何版本均无效
使它看起来更好的微小变化不会让它看起来更好并且不是轻微的，存在显着差异
这两个版本的代码都没有正确使用Python类
repl.it通常提供自己的乌龟实现原始

一个程序就像一个故事，你首先要解释事件的背景，然后你继续以符合逻辑的顺序讲述故事。

这是我对你的代码进行的修改，试图讲述一个更好的故事，但由于缺少部分故事，它仍然无法完全发挥作用：

from turtle import Turtle, Screen
from random import randint

WIDTH, HEIGHT = 300, 300

class Food():
    def block():
        cube.penup()
        cube.goto(x1, y1)
        cube.pendown()

        cube.begin_fill()
        for _ in range(4):
            cube.forward(10)
            cube.right(90)
        cube.end_fill()

class Player():
    def forward():

        for _ in range(10):
            t.forward(LENGTH)
            # t.delay(25)  # no such turtle method, perhaps repl.it addition
        t.clear()

        x, y = t.position()

        if not -WIDTH / 2 < x < WIDTH / 2 or not -HEIGHT / 2 < y < HEIGHT/2:
            cube.clear()
            t.hideturtle()
            title.clear()
            title.penup()
            title.goto(0, 0)
            title.pendown()
            title.write("GAMEOVER", align='center', font=('lobster', 18, 'bold'))

    def left():
        t.speed(0)
        t.left(90)
        t.speed(3)

    def right():
        t.speed(0)
        t.right(90)
        t.speed(3)

class Collision_check():
    def check():
        global LENGTH
        crash = True

        if t.xcor() >= cube.xcor() and t.xcor() <= cube.xcor() + 10 and t.ycor() >= cube.ycor() and t.ycor() <= cube.ycor() + 10:
            cube.clear()
            cube.goto(x1, y1)
            LENGTH += 1
            if cube.xcor() >= t.xcor() and cube.xcor() <= t.xcor()+10 and cube.ycor() >= t.ycor() and cube.ycor() <= t.ycor()+10:
                cube.clear()
                cube.goto(x1, y1)
                LENGTH += 1
        else:
            crash = False

        return crash

s = Screen()
s.setup(WIDTH, HEIGHT)
s.bgcolor('dark green')

t = Turtle()
t.shape('square')
t.width(1)

cube = Turtle()
cube.hideturtle()
cube.color('red')
cube.speed('fastest')

# Title
title = Turtle()
title.hideturtle()
title.color('red')
title.penup()
title.goto(0, 130)
title.write("SNAK3", align='center', font=('lobster', 20, 'bold'))

LENGTH = 5

# Random cords
x1 = randint(cube.xcor()/2 - WIDTH/2, WIDTH/2 - cube.xcor()/2)
y1 = randint(cube.ycor()/2 - HEIGHT/2, HEIGHT/2 - cube.ycor()/2)

food = Food.block()
player1 = Player()

s.onkey(Player.forward, 'Up')
s.onkey(Player.left, 'Left')
s.onkey(Player.right, 'Right')
s.listen()

# this makes no sense here, needs to happen on a regular basis after moves
collision = Collision_check.check()

s.mainloop()

Python龟|显示不会显示

1 个答案: