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snake.py
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snake.py
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import random
import curses
# Initialize the curses library to create our screen
screen = curses.initscr()
# Hide the cursor
curses.curs_set(0)
# Get the maximum screen height and width
screen_height, screen_width = screen.getmaxyx()
# Create a new window
window = curses.newwin(screen_height, screen_width, 0, 0)
# Allow window to receive input from the keyboard
window.keypad(1)
# Set the delay for updating the screen
window.timeout(100)
# Set the initial position of the snake's head
snk_x = screen_width // 4
snk_y = screen_height // 2
# Define the initial position of the snake body
snake = [
[snk_y, snk_x],
[snk_y, snk_x - 1],
[snk_y, snk_x - 2]
]
# Create the food in the middle of the window
food = [screen_height // 2, screen_width // 2]
# Add the food using pi character from the curses module
window.addch(food[0], food[1], curses.ACS_PI)
# Set initial movement direction to right
key = curses.KEY_RIGHT
# Create game loop that loops forever until the player loses or quits the game
while True:
# Get the next key that will be pressed by user
next_key = window.getch()
key = key if next_key == -1 else next_key
# Check if the snake collided with the walls or itself
if (snake[0][0] in [0, screen_height] or
snake[0][1] in [0, screen_width] or
snake[0] in snake[1:]):
curses.endwin() # Closing the window
quit() # Exit the program
# Set the new position of the snake head based on the direction
new_head = [snake[0][0], snake[0][1]]
if key == curses.KEY_DOWN:
new_head[0] += 1
if key == curses.KEY_UP:
new_head[0] -= 1
if key == curses.KEY_RIGHT:
new_head[1] += 1
if key == curses.KEY_LEFT:
new_head[1] -= 1
# Insert the new head to the first position of the snake
snake.insert(0, new_head)
# Check if the snake ate the food
if snake[0] == food:
food = None # Remove the food after the snake eats it
# While food is removed, generate a new food
while food is None:
new_food = [
random.randint(1, screen_height - 1),
random.randint(1, screen_width - 1)
]
food = new_food if new_food not in snake else None
# Set the food to new if new food generated is not in snake body and add it to screen
window.addch(food[0], food[1], curses.ACS_PI)
else:
# Otherwise remove the last segment of snake body
tail = snake.pop()
window.addch(tail[0], tail[1], ' ')
# Update the position of the snake on screen
window.addch(snake[0][0], snake[0][1], curses.ACS_CKBOARD)