Question

求一段JAVA编写的贪吃蛇小程序源代码

要求蛇在吃掉豆子后会变长，碰墙壁或自己后会结束游戏，豆子的刷新位置随机
跪求牛人解答，越简便越好！

Answer 1

用MVC方式实现的贪吃蛇游戏，共有4个类。运行GreedSnake运行即可。主要是观察者模式的使用，我已经添加了很多注释了。
1、
/*
* 程序名称：贪食蛇
* 原作者：BigF
* 修改者：algo
* 说明：我以前也用C写过这个程序，现在看到BigF用Java写的这个，发现虽然作者自称是Java的初学者，
* 但是明显编写程序的素养不错，程序结构写得很清晰，有些细微得地方也写得很简洁，一时兴起之
* 下，我认真解读了这个程序，发现数据和表现分开得很好，而我近日正在学习MVC设计模式，
* 因此尝试把程序得结构改了一下，用MVC模式来实现，对源程序得改动不多。
* 我同时也为程序增加了一些自己理解得注释，希望对大家阅读有帮助。
*/

package mvcTest;

/**
* @author WangYu
* @version 1.0
* Description:
* </pre>
* Create on :Date :2005-6-13 Time:15:57:16
* LastModified:
* History:
*/
public class GreedSnake {
public static void main(String[] args) {
SnakeModel model = new SnakeModel(20,30);
SnakeControl control = new SnakeControl(model);
SnakeView view = new SnakeView(model,control);
//添加一个观察者，让view成为model的观察者
model.addObserver(view);

(new Thread(model)).start();
}
}

-------------------------------------------------------------
2、

package mvcTest;

//SnakeControl.java
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

/**
* MVC中的Controler，负责接收用户的操作，并把用户操作通知Model
*/
public class SnakeControl implements KeyListener{
SnakeModel model;

public SnakeControl(SnakeModel model){
this.model = model;
}

public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if (model.running){ // 运行状态下，处理的按键
switch (keyCode) {
case KeyEvent.VK_UP:
model.changeDirection(SnakeModel.UP);
break;
case KeyEvent.VK_DOWN:
model.changeDirection(SnakeModel.DOWN);
break;
case KeyEvent.VK_LEFT:
model.changeDirection(SnakeModel.LEFT);
break;
case KeyEvent.VK_RIGHT:
model.changeDirection(SnakeModel.RIGHT);
break;
case KeyEvent.VK_ADD:
case KeyEvent.VK_PAGE_UP:
model.speedUp();
break;
case KeyEvent.VK_SUBTRACT:
case KeyEvent.VK_PAGE_DOWN:
model.speedDown();
break;
case KeyEvent.VK_SPACE:
case KeyEvent.VK_P:
model.changePauseState();
break;
default:
}
}

// 任何情况下处理的按键，按键导致重新启动游戏
if (keyCode == KeyEvent.VK_R ||
keyCode == KeyEvent.VK_S ||
keyCode == KeyEvent.VK_ENTER) {
model.reset();
}
}

public void keyReleased(KeyEvent e) {
}

public void keyTyped(KeyEvent e) {
}
}
-------------------------------------------------------------
3、
/*
*
*/

package mvcTest;

/**
* 游戏的Model类，负责所有游戏相关数据及运行
* @author WangYu
* @version 1.0
* Description:
* </pre>
* Create on :Date :2005-6-13 Time:15:58:33
* LastModified:
* History:
*/
//SnakeModel.java
import javax.swing.*;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Observable;
import java.util.Random;

/**
* 游戏的Model类，负责所有游戏相关数据及运行
*/
class SnakeModel extends Observable implements Runnable {
boolean[][] matrix; // 指示位置上有没蛇体或食物
LinkedList nodeArray = new LinkedList(); // 蛇体
Node food;
int maxX;
int maxY;
int direction = 2; // 蛇运行的方向
boolean running = false; // 运行状态

int timeInterval = 200; // 时间间隔，毫秒
double speedChangeRate = 0.75; // 每次得速度变化率
boolean paused = false; // 暂停标志

int score = 0; // 得分
int countMove = 0; // 吃到食物前移动的次数

// UP and DOWN should be even
// RIGHT and LEFT should be odd
public static final int UP = 2;
public static final int DOWN = 4;
public static final int LEFT = 1;
public static final int RIGHT = 3;

public SnakeModel( int maxX, int maxY) {
this.maxX = maxX;
this.maxY = maxY;

reset();
}

public void reset(){
direction = SnakeModel.UP; // 蛇运行的方向
timeInterval = 200; // 时间间隔，毫秒
paused = false; // 暂停标志
score = 0; // 得分
countMove = 0; // 吃到食物前移动的次数

// initial matirx, 全部清0
matrix = new boolean[maxX][];
for (int i = 0; i < maxX; ++i) {
matrix[i] = new boolean[maxY];
Arrays.fill(matrix[i], false);
}

// initial the snake
// 初始化蛇体，如果横向位置超过20个，长度为10，否则为横向位置的一半
int initArrayLength = maxX > 20 ? 10 : maxX / 2;
nodeArray.clear();
for (int i = 0; i < initArrayLength; ++i) {
int x = maxX / 2 + i;//maxX被初始化为20
int y = maxY / 2; //maxY被初始化为30
//nodeArray[x,y]: [10,15]-[11,15]-[12，15]~~[20,15]
//默认的运行方向向上，所以游戏一开始nodeArray就变为：
// [10，14]-[10，15]-[11，15]-[12，15]~~[19，15]
nodeArray.addLast(new Node(x, y));
matrix[x][y] = true;
}

// 创建食物
food = createFood();
matrix[food.x][food.y] = true;
}

public void changeDirection(int newDirection) {
// 改变的方向不能与原来方向同向或反向
if (direction % 2 != newDirection % 2) {
direction = newDirection;
}
}

/**
* 运行一次
* @return
*/
public boolean moveOn() {
Node n = (Node) nodeArray.getFirst();
int x = n.x;
int y = n.y;

// 根据方向增减坐标值
switch (direction) {
case UP:
y--;
break;
case DOWN:
y++;
break;
case LEFT:
x--;
break;
case RIGHT:
x++;
break;
}

// 如果新坐标落在有效范围内，则进行处理
if ((0 <= x && x < maxX) && (0 <= y && y < maxY)) {

if (matrix[x][y]) { // 如果新坐标的点上有东西（蛇体或者食物）
if (x == food.x && y == food.y) { // 吃到食物，成功
nodeArray.addFirst(food); // 从蛇头赠长

// 分数规则，与移动改变方向的次数和速度两个元素有关
int scoreGet = (10000 - 200 * countMove) / timeInterval;
score += scoreGet > 0 ? scoreGet : 10;
countMove = 0;

food = createFood(); // 创建新的食物
matrix[food.x][food.y] = true; // 设置食物所在位置
return true;
} else // 吃到蛇体自身，失败
return false;

} else { // 如果新坐标的点上没有东西（蛇体），移动蛇体
nodeArray.addFirst(new Node(x, y));
matrix[x][y] = true;
n = (Node) nodeArray.removeLast();
matrix[n.x][n.y] = false;
countMove++;
return true;
}
}
return false; // 触到边线，失败
}

public void run() {
running = true;
while (running) {
try {
Thread.sleep(timeInterval);
} catch (Exception e) {
break;
}

if (!paused) {
if (moveOn()) {
setChanged(); // Model通知View数据已经更新
notifyObservers();
} else {
JOptionPane.showMessageDialog(null,
"you failed",
"Game Over",
JOptionPane.INFORMATION_MESSAGE);
break;
}
}
}
running = false;
}

private Node createFood() {
int x = 0;
int y = 0;
// 随机获取一个有效区域内的与蛇体和食物不重叠的位置
do {
Random r = new Random();
x = r.nextInt(maxX);
y = r.nextInt(maxY);
} while (matrix[x][y]);

return new Node(x, y);
}

public void speedUp() {
timeInterval *= speedChangeRate;
}

public void speedDown() {
timeInterval /= speedChangeRate;
}

public void changePauseState() {
paused = !paused;
}

public String toString() {
String result = "";
for (int i = 0; i < nodeArray.size(); ++i) {
Node n = (Node) nodeArray.get(i);
result += "[" + n.x + "," + n.y + "]";
}
return result;
}
}

class Node {
int x;
int y;

Node(int x, int y) {
this.x = x;
this.y = y;
}
}
------------------------------------------------------------
4、

package mvcTest;

//SnakeView.java
import javax.swing.*;
import java.awt.*;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Observable;
import java.util.Observer;

/**
* MVC模式中得Viewer，只负责对数据的显示,而不用理会游戏的控制逻辑
*/
public class SnakeView implements Observer {
SnakeControl control = null;
SnakeModel model = null;

JFrame mainFrame;
Canvas paintCanvas;
JLabel labelScore;

public static final int canvasWidth = 200;
public static final int canvasHeight = 300;

public static final int nodeWidth = 10;
public static final int nodeHeight = 10;

public SnakeView(SnakeModel model, SnakeControl control) {
this.model = model;
this.control = control;

mainFrame = new JFrame("GreedSnake");

Container cp = mainFrame.getContentPane();

// 创建顶部的分数显示
labelScore = new JLabel("Score:");
cp.add(labelScore, BorderLayout.NORTH);

// 创建中间的游戏显示区域
paintCanvas = new Canvas();
paintCanvas.setSize(canvasWidth + 1, canvasHeight + 1);
paintCanvas.addKeyListener(control);
cp.add(paintCanvas, BorderLayout.CENTER);

// 创建底下的帮助栏
JPanel panelButtom = new JPanel();
panelButtom.setLayout(new BorderLayout());
JLabel labelHelp;
labelHelp = new JLabel("PageUp, PageDown for speed;", JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.NORTH);
labelHelp = new JLabel("ENTER or R or S for start;", JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.CENTER);
labelHelp = new JLabel("SPACE or P for pause", JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.SOUTH);
cp.add(panelButtom, BorderLayout.SOUTH);

mainFrame.addKeyListener(control);
mainFrame.pack();
mainFrame.setResizable(false);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setVisible(true);
}

void repaint() {
Graphics g = paintCanvas.getGraphics();

//draw background
g.setColor(Color.WHITE);
g.fillRect(0, 0, canvasWidth, canvasHeight);

// draw the snake
g.setColor(Color.BLACK);
LinkedList na = model.nodeArray;
Iterator it = na.iterator();
while (it.hasNext()) {
Node n = (Node) it.next();
drawNode(g, n);
}

// draw the food
g.setColor(Color.RED);
Node n = model.food;
drawNode(g, n);

updateScore();
}

private void drawNode(Graphics g, Node n) {
g.fillRect(n.x * nodeWidth,
n.y * nodeHeight,
nodeWidth - 1,
nodeHeight - 1);
}

public void updateScore() {
String s = "Score: " + model.score;
labelScore.setText(s);
}

public void update(Observable o, Object arg) {
repaint();
}
}
希望采纳

Answer 2

Node类节点
package corejava.day05.worm;
public class Node {
private int i;
private int j;
public Node() {
}
public Node(int i, int j) {
super();
this.i = i;
this.j = j;
}
public int getI() {
return i;
}
public void setI(int i) {
this.i = i;
}
public int getJ() {
return j;
}
public void setJ(int j) {
this.j = j;
}
public boolean equals(Object o) {
if(o==null){
return false;
}
if(this==o){
return true;
}
if (o instanceof Node) {
Node other = (Node) o;
return this.i == other.i &&
this.j==other.j;
}
return false;
}
public int hashCode() {
return i*1000+j;
}
public String toString() {
return "["+i+","+j+"]";
}
}
Worm类
package corejava.day05.worm;
import java.util.ArrayList;
public class Worm {
private ArrayList<Node> nodes = new ArrayList<Node>();
public static final int UP = -10;
public static final int DOWM = 10;
public static final int LEFT = -1;
public static final int RIGHT = 1;
private int dir;
public Worm() {
dir = UP;
nodes.add(new Node(3,9));
nodes.add(new Node(4,9));
nodes.add(new Node(5,9));
nodes.add(new Node(5,10));
nodes.add(new Node(5,11));
nodes.add(new Node(6,11));
nodes.add(new Node(7,11));
}
public Worm(ArrayList<Node> nodes, int dir) {
this.nodes.clear();
this.nodes.addAll(nodes);
this.dir = dir;
}
/** 沿着当前方向走一步 */
public void step(){
Node head = nodes.get(0);
int i = head.getI() + dir/10;
int j = head.getJ() + dir%10;
head = new Node(i,j);
nodes.add(0, head);
nodes.remove(nodes.size()-1);
}
/** 换方向走一步 */
public void step(int dir){
this.dir = dir;
step();
}
public boolean contains(int i, int j){
//return nodes.contains(new Node(i,j));
for(int idx=0; idx<nodes.size(); idx++){
Node node = nodes.get(idx);
if(node.getI()==i && node.getJ()==j){
return true;
}
}
return false;
}
public String toString() {
return nodes.toString();
}
}
WormPanel类
package corejava.day05.worm;
public class WormPane {
private Worm worm;
private int rows = 10;//行数
private int cols = 25;//列数
public WormPane() {
worm = new Worm();
}
public WormPane(Worm worm){
this.worm = worm;
}
public Worm getWorm() {
return worm;
}
public void print(){
for(int i=0; i<rows; i++){
for(int j=0; j<cols; j++){
if(i==0||i==rows-1){
System.out.print("-");
}else if(j==0||j==cols-1){
System.out.print("|");
}else if(worm.contains(i,j)){
System.out.print("#");
}else{
System.out.print(" ");
}
}
System.out.println();
}
}
}
WormDemo类
package corejava.day05.worm;
import java.util.Scanner;
public class WormDemo {
public static void main(String[] args) {
WormPane pane = new WormPane();
//pane.print();
Scanner s = new Scanner(System.in);
while(true){
pane.print();
Worm worm = pane.getWorm();
System.out.println(worm);
String cmd = s.nextLine();
if(cmd.equalsIgnoreCase("u")){
worm.step(Worm.UP);
}else if(cmd.equalsIgnoreCase("d")){
worm.step(Worm.DOWM);
}else if(cmd.equalsIgnoreCase("l")){
worm.step(Worm.LEFT);
}else if(cmd.equalsIgnoreCase("r")){
worm.step(Worm.RIGHT);
}else if(cmd.equalsIgnoreCase("q")){
System.out.println("Bye! *_0");
break;
}else{
worm.step();
}
}
}
}
蛇图
i j
j                                   UP -1 0
01234567890123456789012345678901  DOWN  1 0
i 0--------------------------------  LEFT  0-1
1|                 O            | RIGHT  0 1
2|        ^                     |    2,9
3|      <-#->                   |3,8 3,9 3,10
4|        #                     |    4,9
5|        ###                   |    5,9 5,10 5,11
6|          #         O       O |             6,11
7|          #                   |             7,11
8|                              |  nodes.remove(nodes.size()-1)
9--------------------------------
class Node(i,j)
class Worm(List<Node> nodes)
step()
step(int dir)
class WormPanel

Answer 3

以前读书的时候写了，后来早丢了，现在网上有这种资源，应该不少

Answer 4

我发给你吧~~ 信箱？还是QQ？