Snake game

How would I fix the incrementing and get the snake to eat the food in the code below?
from tkinter import *
import random

GAME_WIDTH = 700
GAME_HEIGHT = 700
SPEED = 50
SPACE_SIZE = 50
BODY_PARTS = 3
SNAKE_COLOR = "#00FF00"
FOOD_COLOR="#FF0000"
BACKGROUND_COLOR="#000000"

class Snake:
def __init__(self):
self.body_size = BODY_PARTS
self.coordinates = []
self.squares = []

for i in range(0, BODY_PARTS):
self.coordinates.append([0, 0])

for x, y in self.coordinates:
square = canvas.create_rectangle(x,y, x+SPACE_SIZE, y + SPACE_SIZE, fill = SNAKE_COLOR, tag="snake")
self.squares.append(square)

class Food:
def __init__(self):
x = random.randint(0,(GAME_WIDTH/SPACE_SIZE-1) * SPACE_SIZE)
y = random.randint(0,(GAME_HEIGHT/SPACE_SIZE-1) * SPACE_SIZE)

self.coordinates = [x,y]

canvas.create_oval(x,y, x+SPACE_SIZE, y + SPACE_SIZE,fil=FOOD_COLOR, tag="food")

def next_turn(snake,food):

x, y = snake.coordinates[0]

if direction == "up":
y -= SPACE_SIZE

elif direction == "down":
y += SPACE_SIZE

elif direction == "left":
x -=SPACE_SIZE

elif direction == "right":
x +=SPACE_SIZE

snake.coordinates.insert(0, (x, y))
square = canvas.create_rectangle(x,y, x+SPACE_SIZE, y+SPACE_SIZE, fill=SNAKE_COLOR)

snake.squares.insert(0, square)

if x == food.coordinates[0] and y == food.coordinates[1]:

global score

score += 1

label.config(text="Score:{}".format(score))
canvas.delete("food")

food = Food()

else:
del snake.coordinates[-1]

canvas.delete(snake.squares[-1])

del snake.squares[-1]

if check_collisions(snake):
game_over()
else:
window.after(SPEED,next_turn, snake, food)

def change_direction(new_direction):
global direction

if new_direction == 'left':
if direction != 'right':
direction = new_direction
elif new_direction == 'right':
if direction != 'left':
direction = new_direction
elif new_direction == 'up':
if direction != 'down':
direction = new_direction
elif new_direction == 'down':
if direction != 'up':
direction = new_direction

def check_collisions(snake):
x, y = snake.coordinates[0]

if x < 0 or x>= GAME_WIDTH:
print("Game Over")
return True
elif y < 0 or y>= GAME_HEIGHT:
print("Game Over")
return True

for body_part in snake.coordinates[1:]:
if x == body_part[0] and y == body_part[1]:
print("Game Over")
return True

return False

def game_over():
canvas.delete(ALL)
canvas.create_text(canvas.winfo_width()/2, canvas.winfo_height()/2, font=('consolas',70), text="GAME OVER", fill="red", tag="gameover" )

window = Tk()
window.title("Snake game")
window.resizable(False,False)

score = 0
direction = 'down'

label = Label(window,text="Score:{}".format(score), font=('consolas',40) )
label.pack()

canvas = Canvas(window, bg=BACKGROUND_COLOR, height=GAME_HEIGHT, width=GAME_WIDTH)
canvas.pack()

window.update()

window_width = window.winfo_width()
window_height = window.winfo_height()
screen_width = window.winfo_screenwidth()
screen_height = window.winfo_screenheight()

x = int((screen_width/2) - (window_width/2))
y = int((screen_height/2) - (window_height/2))

window.geometry(f"{window_width}x{window_height}+{x}+{y}")

window.bind('<Left>', lambda event: change_direction('left'))
window.bind('<Right>', lambda event: change_direction('right'))
window.bind('<Up>', lambda event: change_direction('up'))
window.bind('<Down>', lambda event: change_direction('down'))

snake = Snake()
food = Food()

next_turn(snake,food)

window.mainloop()

Reply 1

Actuallystudy

6

I'm not totally sure if this is right cos it's been a while that I've done this.

you may have to modify the function next_turn() to something like this

def next_turn(snake, food):
game_over_flag = False # Set to False by default
if check_collisions(snake):
game_over_flag = True
game_over()
return

# ... (rest of the code)

In your class Food, you also have a typo, it should be 'fill' instead of 'fil'. The correction is highlighted in bold and underlined

class Food:
def __init__(self):
x = random.randint(0, (GAME_WIDTH // SPACE_SIZE - 1) * SPACE_SIZE)
y = random.randint(0, (GAME_HEIGHT // SPACE_SIZE - 1) * SPACE_SIZE)

self.coordinates = [x, y]

canvas.create_oval(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=FOOD_COLOR, tag="food")

Hopefully, this fixes the issues you had.

(edited 8 months ago)

Reply 2

Luna2805

OP

4

Original post by Actuallystudy

I'm not totally sure if this is right cos it's been a while that I've done this.

you may have to modify the function next_turn() to something like this

def next_turn(snake, food):
game_over_flag = False # Set to False by default
if check_collisions(snake):
game_over_flag = True
game_over()
return

# ... (rest of the code)

In your class Food, you also have a typo, it should be 'fill' instead of 'fil'. The correction is highlighted in bold and underlined

class Food:
def __init__(self):
x = random.randint(0, (GAME_WIDTH // SPACE_SIZE - 1) * SPACE_SIZE)
y = random.randint(0, (GAME_HEIGHT // SPACE_SIZE - 1) * SPACE_SIZE)

self.coordinates = [x, y]

canvas.create_oval(x, y, x + SPACE_SIZE, y + SPACE_SIZE, fill=FOOD_COLOR, tag="food")

Hopefully, this fixes the issues you had.

Thank you. It worked.