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snake_game.py
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snake_game.py
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import turtle
import time
from random import randint
# moving to left
def left():
if snake[0].heading() == 90:
snake[0].left(90)
elif snake[0].heading() == 270:
snake[0].right(90)
# moving to right
def right():
if snake[0].heading() == 270:
snake[0].left(90)
elif snake[0].heading() == 90:
snake[0].right(90)
# moving to up
def up():
if snake[0].heading() == 0:
snake[0].left(90)
elif snake[0].heading() == 180:
snake[0].right(90)
# moving to down
def down():
if snake[0].heading() == 180:
snake[0].left(90)
elif snake[0].heading() == 0:
snake[0].right(90)
def add(): # adding a new part to the snake
add_body = turtle.Turtle(shape="square")
add_body.color("white")
add_body.penup()
add_body.goto(snake[i - 1].xcor() + 20, snake[i - 1].ycor())
add_body.speed(0)
snake.append(add_body)
window = turtle.Screen()
window.bgcolor("black")
window.setup(height=600, width=600)
window.tracer(0)
# moving
window.listen()
window.onkey(key="Left", fun=left)
window.onkey(key="Right", fun=right)
window.onkey(key="Up", fun=up)
window.onkey(key="Down", fun=down)
food = turtle.Turtle(shape="circle")
food.color("blue")
food.penup()
food.shapesize(0.5)
food.goto(randint(-250, 250), randint(-250, 250))
score = 0
score_board = turtle.Turtle()
score_board.color("white")
score_board.penup()
score_board.hideturtle()
# creating the snake
snake = []
for i in range(3):
# snake's head
if i == 0:
head = turtle.Turtle(shape="square")
head.color("red")
head.penup()
head.goto(0, 0)
snake.append(head)
# snake's body
else:
body = turtle.Turtle(shape="square")
body.color("white")
body.penup()
body.goto(snake[i - 1].xcor() + 20, snake[i - 1].ycor())
snake.append(body)
live = True
while live:
for i in range(len(snake) - 1, 0, -1):
new_x = snake[i - 1].xcor()
new_y = snake[i - 1].ycor()
snake[i].goto(new_x, new_y)
snake[0].forward(20)
# Detect collision with tail
for i in range(4, len(snake)):
if snake[0].xcor() == snake[i].xcor() and snake[0].ycor() == snake[i].ycor():
live = False
# Detect collision with food
if snake[0].distance(food) <= 20:
score += 1
add()
food.goto(randint(-250, 250), randint(-250, 250))
i = 0
# food and snake being in different places
while i < len(snake):
if snake[i].distance(food) < 15:
food.goto(randint(-250, 250), randint(-250, 250))
i = 0
i += 1
score_board.clear()
score_board.goto(0, 270)
score_board.write(f"SCORE : {score}", align="center", font=("arial", 20, "normal"))
# Detect collision with wall
if snake[0].ycor() < -270 or snake[0].ycor() > 270 or snake[0].xcor() < -270 or snake[0].xcor() > 270:
live = False
window.update()
time.sleep(0.15 - (score * .005))
game_over = turtle.Turtle()
game_over.color("white")
game_over.penup()
game_over.hideturtle()
game_over.write("GAME OVER", align="center", font=("arial", 25, "normal"))
window.exitonclick()