Pygame-Snakegame中的生长函数

Question

嗨，伙计们，我开始学习pygames，我开始玩snake，但遇到了一个障碍。我不知道怎么做一个函数，让我的蛇在吃苹果的时候生长，我看了很多蛇的代码，我还是不确定怎么做。我不知道怎么做，我真的希望你能给我一些建议来提高我的比赛。

你的帮助对我有好处，谢谢

import pygame
import random
import math
# Init
pygame.init()
# Screen
screen = pygame.display.set_mode((800, 600))
# Caption and Icon
pygame.display.set_caption("Snake Game")
icon = pygame.image.load('icon.png')
pygame.display.set_icon(icon)
# Background
background = pygame.image.load('background.jpg')
# Snake
snakeImg = pygame.image.load('snake.png')
snakeX = 300
snakeY = 300
snakeX_change = 0
snakeY_change = 0
# Apple
appleImg = pygame.image.load('apple.png')
appleX = random.randint(32, 768)
appleY = random.randint(32, 568)
def snake(x, y):
    screen.blit(snakeImg, (x, y))
def apple(x, y):
    screen.blit(appleImg, (x, y))
# Collision
def isCollision(appleX, appleY, snaketX, snakeY):
    distance = distance = math.sqrt(math.pow(appleX - snakeX, 2) + (math.pow(appleY - snakeY, 2)))
    if distance < 27:
        return True
    else:
        return False
# Game Loop
score = 0
running = True
while running:
    # Background Image
    screen.blit(background, (0, 0))
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        
        # Snake Movment
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                snakeX_change = -0.1
                snakeY_change = 0
            if event.key == pygame.K_UP:
                snakeY_change = -0.1
                snakeX_change = 0
            if event.key == pygame.K_RIGHT:
                snakeX_change = 0.1
                snakeY_change = 0
            if event.key == pygame.K_DOWN:
                snakeY_change = 0.1
                snakeX_change = 0
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                snakeX_change = -0.1
            if event.key == pygame.K_RIGHT:
                snakeX_change = 0.1
            if event.key == pygame.K_DOWN:
                snakeY_change = 0.1
            if event.key == pygame.K_UP:
                snakeY_change = -0.1
    snakeX += snakeX_change
    snakeY += snakeY_change
    if snakeX <= 0:
        snakeX = 0
    elif snakeX >= 770:
        snakeX = 770
    if snakeY <= 0:
        snakeY = 0
    elif snakeY >= 570:
        snakeY = 570
    # Collision
    collision = isCollision(appleX, appleY, snakeX, snakeY)
    if collision:
        score += 1
        print(score)
        appleX = random.randint(32, 768)
        appleY = random.randint(32, 568)
    snake(snakeX, snakeY)
    apple(appleX, appleY)
    pygame.display.flip()

Answer 1

当蛇的头与苹果碰撞时，在蛇体内加入一个元素，就可以将蛇的身体解释为一个元素列表，可能包含元组。