I am trying to create a snake game with Turtle graphics. The food is a class that inherits the Turtle but when I run the code is does not appear on the screen:

food.py

from turtle import Turtle
import random

class Food(Turtle):

    def __int__(self):
        super().__init__()
        self.shape("circle")
        self.penup()
        self.shapesize(stretch_len=0.5, stetch_wid=0.5)
        self.color("blue")
        random_x = random.randint(-280,280)
        random_y = random.randint(-280, 280)
        self.goto(random_x, random_y)
        print(random_x,random_y)

snake.py

from turtle import Turtle

STARTING_POSITIONS = [(0, 0), (-20, 0), (-40, 0)]
MOVE_DISTANCE = 20
UP = 90
DOWN = 270
RIGHT = 0
LEFT = 180


class Snake:

    def __init__(self):
        self.segments = []
        self.create_snake()

    def create_snake(self):
        for position in STARTING_POSITIONS:
            new_segment = Turtle(shape="square")
            new_segment.color("white")
            new_segment.pu()
            new_segment.setpos(position)
            self.segments.append(new_segment)

    def move(self):
        for seg_num in range((len(self.segments) - 1), 0, -1):
            new_x = self.segments[seg_num - 1].xcor()
            new_y = self.segments[seg_num - 1].ycor()
            self.segments[seg_num].goto(new_x, new_y)
        self.segments[0].forward(MOVE_DISTANCE)

    def up(self):
        if self.segments[0].heading() != DOWN:
            self.segments[0].setheading(UP)

    def down(self):
        if self.segments[0].heading() != UP:
            self.segments[0].setheading(DOWN)

    def left(self):
        if self.segments[0].heading() != RIGHT:
            self.segments[0].setheading(LEFT)

    def right(self):
        if self.segments[0].heading() != LEFT:
            self.segments[0].setheading(RIGHT)e

main.py

from turtle import Screen
from snake import Snake
from food import Food
import time

screen = Screen()
screen.setup(width=600,height=600)
screen.bgcolor("black")
screen.title("My Snake Game")
screen.tracer(0)

food = Food()
snake = Snake()


screen.listen()
screen.onkey(snake.up,"Up")
screen.onkey(snake.down, "Down")
screen.onkey(snake.left, "Left")
screen.onkey(snake.right, "Right")

game_is_on = True
while game_is_on:
    screen.update()
    time.sleep(0.1)
    snake.move()

screen.exitonclick()

your text

When I created the food in the main.py file it was created, but when I tried to import it, it does not get created The screen and the snake are created, the snake get commands from thekeyboard. I tried running it with Thonny, I saw that the food1 variable was allocated a memory, but when i performed debug and tried to "step into" Food(), it did not go into the class

CodePudding user response：

Here is the actual working code.
food.py

from turtle import Turtle
import random

class Food(Turtle):

    def __init__(self):
        super().__init__(shape="circle")
        self.penup()
        self.shapesize(stretch_len=0.5, stretch_wid=0.5)
        self.color("blue")
        self.move_to_new_location()

    def move_to_new_location(self):
        random_x = random.randint(-280, 280)
        random_y = random.randint(-280, 280)
        self.goto(random_x, random_y)

snake.py

from turtle import Turtle

STARTING_POSITIONS = [(0, 0), (-20, 0), (-40, 0)]
MOVE_DISTANCE = 20
UP = 90
DOWN = 270
RIGHT = 0
LEFT = 180


class Snake:

    def __init__(self):
        self.segments = []
        self.create_snake()

    def create_snake(self):
        for position in STARTING_POSITIONS:
            new_segment = Turtle(shape="square")
            new_segment.color("white")
            new_segment.pu()
            new_segment.setpos(position)
            self.segments.append(new_segment)

    def move(self):
        for seg_num in range((len(self.segments) - 1), 0, -1):
            new_x = self.segments[seg_num - 1].xcor()
            new_y = self.segments[seg_num - 1].ycor()
            self.segments[seg_num].goto(new_x, new_y)
        self.segments[0].forward(MOVE_DISTANCE)

    def up(self):
        if self.segments[0].heading() != DOWN:
            self.segments[0].setheading(UP)

    def down(self):
        if self.segments[0].heading() != UP:
            self.segments[0].setheading(DOWN)

    def left(self):
        if self.segments[0].heading() != RIGHT:
            self.segments[0].setheading(LEFT)

    def right(self):
        if self.segments[0].heading() != LEFT:
            self.segments[0].setheading(RIGHT)

main.py

import time
from turtle import Screen

from food import Food
from snake import Snake


def play_game():
    screen = Screen()
    screen.setup(width=600,height=600)
    screen.bgcolor("black")
    screen.title("My Snake Game")
    screen.tracer(0)

    food = Food()
    screen.addshape("circle", ((-5, -5), (-5, 5), (5, 5), (5, -5)))
    snake = Snake()

    screen.listen()
    screen.onkey(snake.up,"Up")
    screen.onkey(snake.down, "Down")
    screen.onkey(snake.left, "Left")
    screen.onkey(snake.right, "Right")

    game_is_on = True
    while game_is_on:
        screen.update()
        time.sleep(0.1)
        snake.move()
        if snake.segments[0].distance(food) < 20:
            food.move_to_new_location()
        if snake.segments[0].xcor() > 280 or snake.segments[0].xcor() < -280 or snake.segments[0].ycor() > 280 or snake.segments[0].ycor() < -280:
            game_is_on = False

    screen.exitonclick()


def main():
    play_game()


if __name__ == "__main__":
    main()

CodePudding user response：

There is two typo mistakes in your code.

1. In Food class must be function __init__ instead of __int__.

2. In Food.__init__ in line self.shapesize(stretch_len=0.5, stetch_wid=0.5) in second param stetch_wid you lost r. it must be stretch_wid.

And now you can see the food.