对于AI来说，编写贪吃蛇游戏需要调用的函数比较多，比如：初始化游戏界面、生成食物、蛇的移动、蛇的生长、判断游戏是否结束等等。
Java代码：
代码语言：java复制import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class SnakeGame extends JFrame {
private final int WIDTH = 300;
private final int HEIGHT = 300;
private final int DOT_SIZE = 10;
private final int ALL_DOTS = 900;
private final int RAND_POS = 29;
private final int DELAY = 140;
private int x[] = new int[ALL_DOTS];
private int y[] = new int[ALL_DOTS];
private int dots;
private int apple_x;
private int apple_y;
private boolean leftDirection = false;
private boolean rightDirection = true;
private boolean upDirection = false;
private boolean downDirection = false;
private boolean inGame = true;
private Timer timer;
private Image ball;
private Image apple;
private Image head;
public SnakeGame() {
initGame();
addKeyListener(new TAdapter());
setBackground(Color.black);
setFocusable(true);
setPreferredSize(new Dimension(WIDTH, HEIGHT));
loadImages();
timer = new Timer(DELAY, new GameCycle());
timer.start();
}
private void initGame() {
dots = 3;
for (int i = 0; i < dots; i ) {
x[i] = 50 - i * DOT_SIZE;
y[i] = 50;
}
locateApple();
}
private void loadImages() {
ImageIcon iid = new ImageIcon(getClass().getResource("dot.png"));
ball = iid.getImage();
ImageIcon iia = new ImageIcon(getClass().getResource("apple.png"));
apple = iia.getImage();
ImageIcon iih = new ImageIcon(getClass().getResource("head.png"));
head = iih.getImage();
}
private void locateApple() {
int r = (int) (Math.random() * RAND_POS);
apple_x = r * DOT_SIZE;
r = (int) (Math.random() * RAND_POS);
apple_y = r * DOT_SIZE;
}
private void checkApple() {
if ((x[0] == apple_x) && (y[0] == apple_y)) {
dots ;
locateApple();
}
}
private void move() {
for (int i = dots; i > 0; i--) {
x[i] = x[(i - 1)];
y[i] = y[(i - 1)];
}
if (leftDirection) {
x[0] -= DOT_SIZE;
}
if (rightDirection) {
x[0] = DOT_SIZE;
}
if (upDirection) {
y[0] -= DOT_SIZE;
}
if (downDirection) {
y[0] = DOT_SIZE;
}
}
private void checkCollision() {
for (int i = dots; i > 0; i--) {
if ((i > 4) && (x[0] == x[i]) && (y[0] == y[i])) {
inGame = false;
}
}
if (y[0] >= HEIGHT) {
inGame = false;
}
if (y[0] < 0) {
inGame = false;
}
if (x[0] >= WIDTH) {
inGame = false;
}
if (x[0] < 0) {
inGame = false;
}
if (!inGame) {
timer.stop();
}
}
private class TAdapter extends KeyAdapter {
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if ((key == KeyEvent.VK_LEFT) && (!rightDirection)) {
leftDirection = true;
upDirection = false;
downDirection = false;
}
if ((key == KeyEvent.VK_RIGHT) && (!leftDirection)) {
rightDirection = true;
upDirection = false;
downDirection = false;
}
if ((key == KeyEvent.VK_UP) && (!downDirection)) {
upDirection = true;
rightDirection = false;
leftDirection = false;
}
if ((key == KeyEvent.VK_DOWN) && (!upDirection)) {
downDirection = true;
rightDirection = false;
leftDirection = false;
}
}
}
private class GameCycle implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (inGame) {
checkApple();
checkCollision();
move();
}
repaint();
}
}
public void paint(Graphics g) {
super.paint(g);
if (inGame) {
g.drawImage(apple, apple_x, apple_y, this);
for (int i = 0; i < dots; i ) {
if (i == 0) {
g.drawImage(head, x[i], y[i], this);
} else {
g.drawImage(ball, x[i], y[i], this);
}
}
Toolkit.getDefaultToolkit().sync();
} else {
gameOver(g);
}
}
private void gameOver(Graphics g) {
String msg = "Game Over";
Font small = new Font("Helvetica", Font.BOLD, 14);
FontMetrics metr = getFontMetrics(small);
g.setColor(Color.white);
g.setFont(small);
g.drawString(msg, (WIDTH - metr.stringWidth(msg)) / 2, HEIGHT / 2);
}
public static void main(String[] args) {
JFrame frame = new SnakeGame();
frame.setTitle("Snake");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}Python代码：
代码语言：python代码运行次数：0复制import pygame
import random
pygame.init()
# 画布大小
width, height = 300, 300
# 颜色定义
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
# 创建游戏窗口
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Snake Game")
# 设置蛇的初始位置
snake_pos = [[100, 50], [90, 50], [80, 50]]
snake_size = 10
# 设置食物的位置
food_pos = [random.randrange(1, width / 10) * 10, random.randrange(1, height / 10) * 10]
# 初始化方向
direction = "RIGHT"
change_to = direction
# 设置游戏速度
speed = 15
# 游戏结束标志
game_over = False
def draw_snake(snake_pos):
for pos in snake_pos:
pygame.draw.rect(screen, white, pygame.Rect(pos[0], pos[1], snake_size, snake_size))
def draw_food(food_pos):
pygame.draw.rect(screen, red, pygame.Rect(food_pos[0], food_pos[1], snake_size, snake_size))
def move_snake(direction, snake_pos):
if direction == "RIGHT":
new_head = [snake_pos[0][0] snake_size, snake_pos[0][1]]
elif direction == "LEFT":
new_head = [snake_pos[0][0] - snake_size, snake_pos[0][1]]
elif direction == "UP":
new_head = [snake_pos[0][0], snake_pos[0][1] - snake_size]
elif direction == "DOWN":
new_head = [snake_pos[0][0], snake_pos[0][1] snake_size]
snake_pos.insert(0, new_head)
return snake_pos
def check_collision(snake_pos):
if snake_pos[0][0] >= width or snake_pos[0][0] < 0:
return True
elif snake_pos[0][1] >= height or snake_pos[0][1] < 0:
return True
for pos in snake_pos[1:]:
if pos == snake_pos[0]:
return True
return False
# 游戏主循环
while not game_over:
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = True
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
change_to = "RIGHT"
elif event.key == pygame.K_LEFT:
change_to = "LEFT"
elif event.key == pygame.K_UP:
change_to = "UP"
elif event.key == pygame.K_DOWN:
change_to = "DOWN"
if change_to == "RIGHT" and direction != "LEFT":
direction = "RIGHT"
elif change_to == "LEFT" and direction != "RIGHT":
direction = "LEFT"
elif change_to == "UP" and direction != "DOWN":
direction = "UP"
elif change_to == "DOWN" and direction != "UP":
direction = "DOWN"
snake_pos = move_snake(direction, snake_pos)
if snake_pos[0] == food_pos:
food_pos = [random.randrange(1, width / 10) * 10, random.randrange(1, height / 10) * 10]
else:
snake_pos.pop()
screen.fill(black)
draw_snake(snake_pos)
draw_food(food_pos)
if check_collision(snake_pos):
game_over = True
pygame.display.update()
# 控制游戏速度
pygame.time.Clock().tick(speed)
pygame.quit()
