贪吃蛇课程设计源代码

### Python实现贪吃蛇游戏

对于Python版本的贪吃蛇游戏，可以采用`pygame`库来构建图形界面并处理键盘输入和碰撞检测等功能。下面是一个简化版的Python贪吃蛇源代码示例：

import pygame, sys, random, time
 
# 初始化Pygame模块
pygame.init()
 
# 定义颜色变量
black = (0, 0, 0)
white = (255, 255, 255)
red = (213, 50, 80)
green = (0, 255, 0)

# 设置窗口大小和其他参数
dis_width = 600
dis_height = 400
snake_block = 10
snake_speed = 15

font_style = pygame.font.SysFont(None, 50)
score_font = pygame.font.SysFont(None, 35)


def Your_score(score):
    value = score_font.render("Your Score: " + str(score), True, white)
    dis.blit(value, [0, 0])


def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, green, [x[0], x[1], snake_block, snake_block])
 

def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 6, dis_height / 3])

    
def gameLoop():
    game_over = False
    game_close = False
    
    x1 = dis_width / 2
    y1 = dis_height / 2
   
    x1_change = 0       
    y1_change = 0
   
    snake_List = []
    Length_of_snake = 1
   
    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
   
    clock = pygame.time.Clock()

    while not game_over:

        while game_close == True:
            dis.fill(black)
            message("You Lost! Press Q-Quit or C-Play Again", red)
            Your_score(Length_of_snake - 1)
            pygame.display.update()
   
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()
   
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0
  
        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        dis.fill(black)
        pygame.draw.rect(dis, red, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True
   
        our_snake(snake_block, snake_List)
        Your_score(Length_of_snake - 1)
   
        pygame.display.update()
  
        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(
                0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(
                0, dis_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1
   
        clock.tick(snake_speed)
   
    pygame.quit()
    quit()


if __name__ == '__main__':
    dis = pygame.display.set_mode((dis_width, dis_height))
    pygame.display.set_caption('Snake Game by Edureka')
    gameLoop() 

这段代码展示了如何创建一个基本的贪吃蛇游戏循环，在其中玩家可以通过方向键控制蛇移动，并通过吃到食物使蛇变长[^1]。

### C++实现贪吃蛇游戏

针对C++语言编写的贪吃蛇游戏通常依赖于控制台操作符以及一些额外的功能函数来进行屏幕刷新和按键监听。这里给出一段较为基础的C++贪吃蛇源码片段作为参考：

#include<iostream>
#include<conio.h> // For _kbhit(), getch()
#include<windows.h>

using namespace std;

bool gameOver;
const int width = 20;     // Width of the console window.
const int height = 20;    // Height of the console window.

int x, y, fruitX, fruitY, score;
int tailX[100], tailY[100];
int nTail;
enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
eDirection dir;

void Setup() {
    gameOver = false;
    dir = STOP;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
}

void Draw() {
    system("cls"); // Clears screen on Windows systems only.
                   // Use 'clear' instead for Unix-like OS's like Linux/MacOS.
    for(int i=0;i<width+2;i++)
       cout << "#";
    cout<<endl;

    for(int i=0 ;i<height ;i++) {
      for(int j=0;j<width;j++){
          if(j==0){
              cout<<"#"; // Left boundary wall
          }
          if(i==y && j==x){
             cout<<"O"; // Snake head symbol
          }else if(i==fruitY && j==fruitX){
             cout<<"F"; // Fruit symbol
          }else{
             bool print=false;
             for(int k=0;k<nTail;k++){
                 if(tailX[k]==j&&tailY[k]==i){
                     cout<<"o"; // Tail part symbols
                     print=true;
                 }
             }
             if(!print){
               cout<<" ";
             }

           }
         if(j==width-1){
             cout<<"#"; // Right boundary wall
         }
      }
      cout<<endl;
   }

   for(int i=0;i<width+2;i++)
      cout << "#";
   cout<<endl;
   cout<<"\nscore:"<<score<<endl;
}
// ...其余部分省略...

此段代码实现了简单的贪吃蛇逻辑结构，包括初始化设置、绘制地图边界线及显示得分等核心要素[^4]。

### Java(Swing)实现贪吃蛇游戏

利用Java Swing组件制作GUI应用程序非常适合初学者练习面向对象编程技巧。以下是使用Swing框架的一个典型例子：

package com.example.snakegame;