多线程版贪吃蛇 游戏说明： 本游戏运行在控制台中，直接运行SnakeTest.java文件,就能在控制台看到游戏画面，每按一个方向再按回车键就能控制蛇移动的方向

a:向左移动

d:向右移动

s：向下移动

w：向上移动

其他字母键：暂停

源代码：

Snake.java

import java.util.LinkedList;

import java.util.Random;

import java.util.Scanner;

/**

* 多线程版本

* @author lfd

*有bug，不完美，比如蛇向左移动时，你让他向右移动，此时会暂停

*界面刚出来时食物的位置跟你按方向键开始玩时的位置不一样

*/

public class Snake {

private String[][] position = new String[24][30];//游戏界面的的大小

private LinkedList snake = new LinkedList();

private Snake.MoveThread moveThread;

private static final int foodNum = 10;//默认初始化的食物数量

private int speed = 600;//刚开始的移动速度

private static final int increaseSpeed = 15; //每吃一个食物增加的速度

public Snake() {

initWall();

initSnake();

initFood(foodNum);

print();

}

public void move() {

while(true) {

Scanner sc = new Scanner(System.in);

String operation = sc.next();//接收用户的输入

if(operation.length()>=2) {

operation = operation.substring(0,1);

}

if(moveThread == null) {

moveThread = new Snake().new MoveThread(operation);//创建一个线程

new Thread(moveThread).start();//启动线程

}else {

moveThread.operation = operation;//改变蛇之前的运动状态

}

}

}

//向上移动

public void moveUp() {

if((getX(0)-1 +","+ getY(0)).equals(snake.get(1))) {//判断蛇头的方向是否是朝着自己身体的方向

return;

}

if(position[getX(0)-1][getY(0)].equals("■")) {//判断是不是撞墙

System.out.println("你死了");

System.exit(0);

}

if(position[getX(0)-1][getY(0)].equals("●")) {//判断有没有吃到食物

snake.addFirst(getX(0)-1+","+getY(0));

speed = speed - Snake.increaseSpeed;//吃到一个食物，移动速度加快一些

}else {

//没有吃到食物也没有撞墙

snake.addFirst(getX(0)-1+","+getY(0));//添加蛇头

position[getX(snake.size()-1)][getY(snake.size()-1)] = " ";//移除蛇尾

snake.removeLast();

}

}

//向下移动

public void moveDown() {

if((getX(0)+1 +","+ getY(0)).equals(snake.get(1))) {

return;

}

if(position[getX(0)+1][getY(0)].equals("■")) {

System.out.println("你死了");

System.exit(0);

}

if(position[getX(0)+1][getY(0)].equals("●")) {

snake.addFirst(getX(0)+1+","+getY(0));

speed = speed - Snake.increaseSpeed;

}else {

snake.addFirst(getX(0)+1+","+getY(0));

position[getX(snake.size()-1)][getY(snake.size()-1)] = " ";

snake.removeLast();

}

}

//向右移动

public void moveRight() {

if((getX(0)+ ","+ (getY(0)+1)).equals(snake.get(1))) {

return;

}

if(position[getX(0)][getY(0)+1].equals("■")) {

System.out.println("你死了");

System.exit(0);

}

if(position[getX(0)][getY(0)+1].equals("●")) {

snake.addFirst(getX(0)+","+(getY(0)+1));

speed = speed - Snake.increaseSpeed;

}else {

snake.addFirst(getX(0)+","+(getY(0)+1));

position[getX(snake.size()-1)][getY(snake.size()-1)] = " ";

snake.removeLast();

}

}

//向左移动

public void moveLeft() {

if((getX(0)+","+ (getY(0)-1)).equals(snake.get(1))) {

return;

}

if(position[getX(0)][getY(0)-1].equals("■")) {

System.out.println("你死了");

System.exit(0);

}

if(position[getX(0)][getY(0)-1].equals("●")) {

snake.addFirst(getX(0)+","+(getY(0)-1));

speed = speed - Snake.increaseSpeed;

}else {

snake.addFirst(getX(0)+","+(getY(0)-1));

position[getX(snake.size()-1)][getY(snake.size()-1)] = " ";

snake.removeLast();

}

}

//得到某节蛇身的x坐标

public int getX(int index) {

return Integer.parseInt(snake.get(index).split(",")[0]);

}

//得到某节蛇身的y坐标

public int getY(int index) {

return Integer.parseInt(snake.get(index).split(",")[1]);

}

public void print() {

for(int i=0;i

int x = getX(i);

int y = getY(i);

if(i==0) {

position[x][y] = "□"; //蛇头是□

continue;

}

position[x][y] = "■";//身体是■

}

for(int i = 0;i

System.out.println();

for(int j=0;j

System.out.print(position[i][j]+" ");

}

}

}

//初始化墙

public void initWall() {

for(int i = 0;i

for(int j=0;j

position[i][j] = " ";

}

}

//初始化第一列和最后一列

for(int i=0;i

position[i][0] = "■";

position[i][position[0].length-1] = "■";

}

//初始化第一行和最后一行

for(int i=0;i

position[0][i] = "■";

position[position.length-1][i] = "■";

}

//在界面中产生一道墙

for(int i=0;i

position[(position.length/4)+i][position[0].length/4] = "■";

}

}

//初始化蛇的位置

public void initSnake() {

snake.add(position.length/2 + "," + (position[0].length/2));

snake.add(position.length/2 + "," + (position[0].length/2+1));

snake.add(position.length/2 + "," + (position[0].length/2+2));

snake.add(position.length/2 + "," + (position[0].length/2+3));

}

/**

* 初始化食物数量

* @param number 食物数量

*/

public void initFood(int number) {

int flag = 0;

while(flag != number) {

int x = new Random().nextInt(position.length-1) + 1;

int y = new Random().nextInt(position[0].length-1) + 1;

if(position[x][y] == " ") {

position[x][y] = "●";

flag++;

}else {

continue;

}

}

}

//每次移动后都判断食物的数量是否减少了1个，如果是，重新产生一个

public void judgeFoodNum() {

int foodNum = 0;

for(int i = 1;i

for(int j=1;j

if(position[i][j].equals("●")) {

foodNum++;

}

}

}

if(foodNum == Snake.foodNum-1) {

initFood(1);//产生一个食物

}

}

//实现自动移动的线程类

class MoveThread implements Runnable{

private String operation;//用户的操作

public MoveThread(String operation) {

this.operation = operation;

}

@Override

public void run() {

while(true) {

if(operation.equals("w")) {//若用户输入的是w，向上移动

moveUp();

}else if(operation.equals("s")) {//若用户输入的是s，向下移动

moveDown();

}else if(operation.equals("a")) {//若用户输入的是a，向左移动

moveLeft();

}else if(operation.equals("d")) {//若用户输入的是d，向上移动

moveRight();

}else{

Thread.yield();//输入除asdw之外的其他字母，暂停移动

}

judgeFoodNum();//每次移动后都判断食物的数量是否减少了1个，如果是，重新产生一个

print();//每次移动后都重新打印界面

try {

Thread.sleep(speed);//每次移动后让线程睡眠一段时间

} catch (InterruptedException e) {

throw new RuntimeException(e);

}

}

}

}

}SnakeTest.java

public class SnakeTest {

public static void main(String[] args) {

Snake snake = new Snake();

snake.move();

}

}