Phiên bản terminal game "Rắn săn mồi"

demo_snake_game.py

FIRST_ROW = 0
LAST_ROW = 11
FIRST_COLUMN = 0
LAST_COLUMN = 11
EMPTY_VALUE = 0
SNAKE_VALUE = 1
FOOD_VALUE = 2

game = [
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
]

snake = [
    [5, 6],
    [4, 6]
]

def show_game():
    global game
    for row in game:
        for col in row:
            print(f"{col:>2}", end=" ")
        print()


def move_snake():
    direction = input("Hướng di chuyển: ")
    if direction == 'a':
        turn_left()
    elif direction == 'd':
        turn_right()
    elif direction == 'w':
        turn_up()
    elif direction == 's':
        turn_down()
    else:
        exit()

    update_snake_in_game()
    show_game()


def turn_up():
    global snake
    head = snake[0]
    del snake[len(snake)-1]

    next_row = head[0] - 1
    if next_row < FIRST_ROW:
        next_row = LAST_ROW

    new_position = [next_row, head[1]]
    snake.insert(0, new_position)

def turn_down():
    global snake
    head = snake[0]
    del snake[len(snake) - 1]

    next_row = head[0] + 1
    if next_row > LAST_ROW:
        next_row = FIRST_ROW

    new_position = [next_row, head[1]]
    snake.insert(0, new_position)

def turn_left():
    global snake
    head = snake[0]
    del snake[len(snake) - 1]

    next_column = head[1] - 1
    if next_column < FIRST_COLUMN:
        next_column = LAST_COLUMN

    new_position = [head[0], next_column]
    snake.insert(0, new_position)

def turn_right():
    global snake
    head = snake[0]
    del snake[len(snake) - 1]

    next_column = head[1] + 1
    if next_column > LAST_COLUMN:
        next_column = FIRST_COLUMN

    new_position = [head[0], next_column]
    snake.insert(0, new_position)

def update_snake_in_game():
    global game, snake
    # reset snake in game
    for i in range(len(game)):
        for j in range(len(game[i])):
            if game[i][j] == SNAKE_VALUE:
                game[i][j] = EMPTY_VALUE
    # update new positions of snake in game
    for pos in snake:
        game[pos[0]][pos[1]] = SNAKE_VALUE

update_snake_in_game()
show_game()

while True:
    move_snake()