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高手幫忙解釋一下JAVA 貪食蛇游戲中蛇的代碼
public
十多年的新吳網(wǎng)站建設(shè)經(jīng)驗，針對設(shè)計、前端、開發(fā)、售后、文案、推廣等六對一服務(wù)，響應(yīng)快，48小時及時工作處理。營銷型網(wǎng)站建設(shè)的優(yōu)勢是能夠根據(jù)用戶設(shè)備顯示端的尺寸不同，自動調(diào)整新吳建站的顯示方式，使網(wǎng)站能夠適用不同顯示終端，在瀏覽器中調(diào)整網(wǎng)站的寬度，無論在任何一種瀏覽器上瀏覽網(wǎng)站，都能展現(xiàn)優(yōu)雅布局與設(shè)計，從而大程度地提升瀏覽體驗。創(chuàng)新互聯(lián)建站從事“新吳網(wǎng)站設(shè)計”,“新吳網(wǎng)站推廣”以來，每個客戶項目都認(rèn)真落實執(zhí)行。
class
Snake
implements
Data//蛇類實現(xiàn)了data接口
{
public
Snake()
{
array.add(new
Point(10,
10));//
array.add(new
Point(10,
11));//
array.add(new
Point(10,
12));//
array.add(new
Point(10,
13));//
array.add(new
Point(10,
14));//這五句話是構(gòu)造一個蛇，這條蛇由五個坐標(biāo)點連成
currentFlag
=UPFLAG
;//當(dāng)前的運動方向設(shè)為向上
lifeFlag
=
true;//當(dāng)前蛇的生命設(shè)為活著
}
public
void
move()//蛇的運動函數(shù)
{
tair
=
(Point)array.get(array.size()
-
1);//得到蛇的尾巴
int
len
=
array.size()
-
2;
for(int
i
=
len;
i
=
0;
i--)//這個for循環(huán)把蛇的每一個點都坐標(biāo)偏移即運動了
{
Point
leftPoint
=
(Point)array.get(i);
Point
rightPoint
=
(Point)array.get(i
+
1);
rightPoint.x
=
leftPoint.x;
rightPoint.y
=
leftPoint.y;//每一個右邊的點等于其左邊的點，像蛇那樣的一縮一張的運動
}
}
public
void
moveHeadLeft()//把蛇的頭部轉(zhuǎn)向左邊
{
if(currentFlag
==
RIGHTFLAG
||
currentFlag
==
LEFTFLAG)//如果運動方向設(shè)為向左或向右則不執(zhí)行
{
return;
}
move();
Point
point
=
(Point)(array.get(0));
//得到蛇頭部
point.x
=
point.x
-
1;//蛇頭部橫坐標(biāo)減一，縱坐標(biāo)不變
point.y
=
point.y;
if(point.x
LEFT)//如果蛇頭部不能再左，就不執(zhí)行
{
lifeFlag
=
false;
}
currentFlag
=
LEFTFLAG;//將蛇運動方向改為左
}
求java貪吃蛇的編程，并有注釋
J2ME貪吃蛇源代碼——200行左右，包含詳細(xì)注釋 package snake;import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;public class SnakeMIDlet extends MIDlet {
SnakeCanvas displayable = new SnakeCanvas();
public SnakeMIDlet() {
Display.getDisplay(this).setCurrent(displayable);
}public void startApp() {}public void pauseApp() {}public void destroyApp(boolean unconditional) {}}//文件名：SnakeCanvas.javapackage snake;import java.util.*;
import javax.microedition.lcdui.*;/**
* 貪吃蛇游戲
*/
public class SnakeCanvas extends Canvas implements Runnable{
/**存儲貪吃蛇節(jié)點坐標(biāo),其中第二維下標(biāo)為0的代表x坐標(biāo)，第二維下標(biāo)是1的代表y坐標(biāo)*/
int[][] snake = new int[200][2];
/**已經(jīng)使用的節(jié)點數(shù)量*/
int snakeNum;
/**貪吃蛇運動方向,0代表向上，1代表向下,2代表向左,3代表向右*/
int direction;
/*移動方向*/
/**向上*/
private final int DIRECTION_UP = 0;
/**向下*/
private final int DIRECTION_DOWN = 1;
/**向左*/
private final int DIRECTION_LEFT = 2;
/**向右*/
private final int DIRECTION_RIGHT = 3;/**游戲區(qū)域?qū)挾?/
int width;
/**游戲區(qū)域高度*/
int height;/**蛇身單元寬度*/
private final byte SNAKEWIDTH = 4;/**是否處于暫停狀態(tài),true代表暫停*/
boolean isPaused = false;
/**是否處于運行狀態(tài),true代表運行*/
boolean isRun = true;/**時間間隔*/
private final int SLEEP_TIME = 300;
/**食物的X坐標(biāo)*/
int foodX;
/**食物的Y坐標(biāo)*/
int foodY;
/**食物的閃爍控制*/
boolean b = true;
/**Random對象*/
Random random = new Random();
public SnakeCanvas() {
//初始化
init();
width = this.getWidth();
height = this.getHeight();
//啟動線程
new Thread(this).start();
}/**
* 初始化開始數(shù)據(jù)
*/
private void init(){
//初始化節(jié)點數(shù)量
snakeNum = 7;
//初始化節(jié)點數(shù)據(jù)
for(int i = 0;i snakeNum;i++){
snake[i][0] = 100 - SNAKEWIDTH * i;
snake[i][1] = 40;
}
//初始化移動方向
direction = DIRECTION_RIGHT;
//初始化食物坐標(biāo)
foodX = 100;
foodY = 100;
}protected void paint(Graphics g) {
//清屏
g.setColor(0xffffff);
g.fillRect(0,0,width,height);
g.setColor(0);//繪制蛇身
for(int i = 0;i snakeNum;i++){
g.fillRect(snake[i][0],snake[i][1],SNAKEWIDTH,SNAKEWIDTH);
}
//繪制食物
if(b){
g.fillRect(foodX,foodY,SNAKEWIDTH,SNAKEWIDTH);
}
}private void move(int direction){
//蛇身移動
for(int i = snakeNum - 1;i 0;i--){
snake[i][0] = snake[i - 1][0];
snake[i][1] = snake[i - 1][1];
}//第一個單元格移動
switch(direction){
case DIRECTION_UP:
snake[0][1] = snake[0][1] - SNAKEWIDTH;
break;
case DIRECTION_DOWN:
snake[0][1] = snake[0][1] + SNAKEWIDTH;
break;
case DIRECTION_LEFT:
snake[0][0] = snake[0][0] - SNAKEWIDTH;
break;
case DIRECTION_RIGHT:
snake[0][0] = snake[0][0] + SNAKEWIDTH;
break;
}
}
/**
* 吃掉食物，自身增長
*/
private void eatFood(){
//判別蛇頭是否和食物重疊
if(snake[0][0] == foodX snake[0][1] == foodY){
snakeNum++;
generateFood();
}
}
/**
* 產(chǎn)生食物
* 說明：食物的坐標(biāo)必須位于屏幕內(nèi)，且不能和蛇身重合
*/
private void generateFood(){
while(true){
foodX = Math.abs(random.nextInt() % (width - SNAKEWIDTH + 1))
/ SNAKEWIDTH * SNAKEWIDTH;
foodY = Math.abs(random.nextInt() % (height - SNAKEWIDTH + 1))
/ SNAKEWIDTH * SNAKEWIDTH;
boolean b = true;
for(int i = 0;i snakeNum;i++){
if(foodX == snake[i][0] snake[i][1] == foodY){
b = false;
break;
}
}
if(b){
break;
}
}
}
/**
* 判斷游戲是否結(jié)束
* 結(jié)束條件：
* 1、蛇頭超出邊界
* 2、蛇頭碰到自身
*/
private boolean isGameOver(){
//邊界判別
if(snake[0][0] 0 || snake[0][0] (width - SNAKEWIDTH) ||
snake[0][1] 0 || snake[0][1] (height - SNAKEWIDTH)){
return true;
}
//碰到自身
for(int i = 4;i snakeNum;i++){
if(snake[0][0] == snake[i][0]
snake[0][1] == snake[i][1]){
return true;
}
}
return false;
}/**
* 事件處理
*/
public void keyPressed(int keyCode){
int action = this.getGameAction(keyCode);
//改變方向
switch(action){
case UP:
if(direction != DIRECTION_DOWN){
direction = DIRECTION_UP;
}
break;
case DOWN:
if(direction != DIRECTION_UP){
direction = DIRECTION_DOWN;
}
break;
case LEFT:
if(direction != DIRECTION_RIGHT){
direction = DIRECTION_LEFT;
}
break;
case RIGHT:
if(direction != DIRECTION_LEFT){
direction = DIRECTION_RIGHT;
}
break;
case FIRE:
//暫停和繼續(xù)
isPaused = !isPaused;
break;
}
}/**
* 線程方法
* 使用精確延時
*/
public void run(){
try{
while (isRun) {
//開始時間
long start = System.currentTimeMillis();
if(!isPaused){
//吃食物
eatFood();
//移動
move(direction);
//結(jié)束游戲
if(isGameOver()){
break;
}
//控制閃爍
b = !b;
}
//重新繪制
repaint();
long end = System.currentTimeMillis();
//延時
if(end - start SLEEP_TIME){
Thread.sleep(SLEEP_TIME - (end - start));
}
}
}catch(Exception e){}
}
}
求"貪吃蛇"小游戲JAVA源代碼一份
貪吃蛇
import java.awt.*;
import java.awt.event.*;
public class GreedSnake //主類
{
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
new MyWindow();
}
}
class MyPanel extends Panel implements KeyListener,Runnable//自定義面板類，繼承了鍵盤和線程接口
{
Button snake[]; //定義蛇按鈕
int shu=0; //蛇的節(jié)數(shù)
int food[]; //食物數(shù)組
boolean result=true; //判定結(jié)果是輸 還是贏
Thread thread; //定義線程
static int weix,weiy; //食物位置
boolean t=true; //判定游戲是否結(jié)束
int fangxiang=0; //蛇移動方向
int x=0,y=0; //蛇頭位置
MyPanel()
{
setLayout(null);
snake=new Button[20];
food=new int [20];
thread=new Thread(this);
for(int j=0;j20;j++)
{
food[j]=(int)(Math.random()*99);//定義20個隨機食物
}
weix=(int)(food[0]*0.1)*60; //十位*60為橫坐標(biāo)
weiy=(int)(food[0]%10)*40; //個位*40為縱坐標(biāo)
for(int i=0;i20;i++)
{
snake[i]=new Button();
}
add(snake[0]);
snake[0].setBackground(Color.black);
snake[0].addKeyListener(this); //為蛇頭添加鍵盤監(jiān)視器
snake[0].setBounds(0,0,10,10);
setBackground(Color.cyan);
}
public void run() //接收線程
{
while(t)
{
if(fangxiang==0)//向右
{
try
{
x+=10;
snake[0].setLocation(x, y);//設(shè)置蛇頭位置
if(x==weixy==weiy) //吃到食物
{
shu++;
weix=(int)(food[shu]*0.1)*60;
weiy=(int)(food[shu]%10)*40;
repaint(); //重繪下一個食物
add(snake[shu]); //增加蛇節(jié)數(shù)和位置
snake[shu].setBounds(snake[shu-1].getBounds());
}
thread.sleep(100); //睡眠100ms
}
catch(Exception e){}
}
else if(fangxiang==1)//向左
{
try
{
x-=10;
snake[0].setLocation(x, y);
if(x==weixy==weiy)
{
shu++;
weix=(int)(food[shu]*0.1)*60;
weiy=(int)(food[shu]%10)*40;
repaint();
add(snake[shu]);
snake[shu].setBounds(snake[shu-1].getBounds());
}
thread.sleep(100);
}
catch(Exception e){}
}
else if(fangxiang==2)//向上
{
try
{
y-=10;
snake[0].setLocation(x, y);
if(x==weixy==weiy)
{
shu++;
weix=(int)(food[shu]*0.1)*60;
weiy=(int)(food[shu]%10)*40;
repaint();
add(snake[shu]);
snake[shu].setBounds(snake[shu-1].getBounds());
}
thread.sleep(100);
}
catch(Exception e){}
}
else if(fangxiang==3)//向下
{
try
{
y+=10;
snake[0].setLocation(x, y);
if(x==weixy==weiy)
{
shu++;
weix=(int)(food[shu]*0.1)*60;
weiy=(int)(food[shu]%10)*40;
repaint();
add(snake[shu]);
snake[shu].setBounds(snake[shu-1].getBounds());
}
thread.sleep(100);
}
catch(Exception e){}
}
int num1=shu;
while(num11)//判斷是否咬自己的尾巴
{
if(snake[num1].getBounds().x==snake[0].getBounds().xsnake[num1].getBounds().y==snake[0].getBounds().y)
{
t=false;
result=false;
repaint();
}
num1--;
}
if(x0||x=this.getWidth()||y0||y=this.getHeight())//判斷是否撞墻
{
t=false;
result=false;
repaint();
}
int num=shu;
while(num0) //設(shè)置蛇節(jié)位置
{
snake[num].setBounds(snake[num-1].getBounds());
num--;
}
if(shu==15) //如果蛇節(jié)數(shù)等于15則勝利
{
t=false;
result=true;
repaint();
}
}
}
public void keyPressed(KeyEvent e) //按下鍵盤方向鍵
{
if(e.getKeyCode()==KeyEvent.VK_RIGHT)//右鍵
{
if(fangxiang!=1)//如果先前方向不為左
fangxiang=0;
}
else if(e.getKeyCode()==KeyEvent.VK_LEFT)
{ if(fangxiang!=0)
fangxiang=1;
}
else if(e.getKeyCode()==KeyEvent.VK_UP)
{ if(fangxiang!=3)
fangxiang=2;
}
else if(e.getKeyCode()==KeyEvent.VK_DOWN)
{ if(fangxiang!=2)
fangxiang=3;
}
}
public void keyTyped(KeyEvent e)
{
}
public void keyReleased(KeyEvent e)
{
}
public void paint(Graphics g) //在面板上繪圖
{
int x1=this.getWidth()-1;
int y1=this.getHeight()-1;
g.setColor(Color.red);
g.fillOval(weix, weiy, 10, 10);//食物
g.drawRect(0, 0, x1, y1); //墻
if(t==falseresult==false)
g.drawString("GAME OVER!", 250, 200);//輸出游戲失敗
else if(t==falseresult==true)
g.drawString("YOU WIN!", 250, 200);//輸出游戲成功
}
}
class MyWindow extends Frame implements ActionListener//自定義窗口類
{
MyPanel my;
Button btn;
Panel panel;
MyWindow()
{
super("GreedSnake");
my=new MyPanel();
btn=new Button("begin");
panel=new Panel();
btn.addActionListener(this);
panel.add(new Label("begin后請按Tab鍵選定蛇"));
panel.add(btn);
panel.add(new Label("按上下左右鍵控制蛇行動"));
add(panel,BorderLayout.NORTH);
add(my,BorderLayout.CENTER);
setBounds(100,100,610,500);
setVisible(true);
validate();
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent e)//按下begin按鈕
{
if(e.getSource()==btn)
{
try
{
my.thread.start(); //開始線程
my.validate();
}
catch(Exception ee){}
}
}
}
求一段JAVA編寫的貪吃蛇小程序源代碼
用MVC方式實現(xiàn)的貪吃蛇游戲，共有4個類。運行GreedSnake運行即可。主要是觀察者模式的使用，我已經(jīng)添加了很多注釋了。
1、
/*
* 程序名稱：貪食蛇
* 原作者：BigF
* 修改者：algo
* 說明：我以前也用C寫過這個程序，現(xiàn)在看到BigF用Java寫的這個，發(fā)現(xiàn)雖然作者自稱是Java的初學(xué)者，
* 但是明顯編寫程序的素養(yǎng)不錯，程序結(jié)構(gòu)寫得很清晰，有些細(xì)微得地方也寫得很簡潔，一時興起之
* 下，我認(rèn)真解讀了這個程序，發(fā)現(xiàn)數(shù)據(jù)和表現(xiàn)分開得很好，而我近日正在學(xué)習(xí)MVC設(shè)計模式，
* 因此嘗試把程序得結(jié)構(gòu)改了一下，用MVC模式來實現(xiàn)，對源程序得改動不多。
* 我同時也為程序增加了一些自己理解得注釋，希望對大家閱讀有幫助。
*/
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);
//添加一個觀察者，讓view成為model的觀察者
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，負(fù)責(zé)接收用戶的操作，并把用戶操作通知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){ // 運行狀態(tài)下，處理的按鍵
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:
}
}
// 任何情況下處理的按鍵，按鍵導(dǎo)致重新啟動游戲
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;
/**
* 游戲的Model類，負(fù)責(zé)所有游戲相關(guān)數(shù)據(jù)及運行
* @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;
/**
* 游戲的Model類，負(fù)責(zé)所有游戲相關(guān)數(shù)據(jù)及運行
*/
class SnakeModel extends Observable implements Runnable {
boolean[][] matrix; // 指示位置上有沒蛇體或食物
LinkedList nodeArray = new LinkedList(); // 蛇體
Node food;
int maxX;
int maxY;
int direction = 2; // 蛇運行的方向
boolean running = false; // 運行狀態(tài)
int timeInterval = 200; // 時間間隔，毫秒
double speedChangeRate = 0.75; // 每次得速度變化率
boolean paused = false; // 暫停標(biāo)志
int score = 0; // 得分
int countMove = 0; // 吃到食物前移動的次數(shù)
// 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; // 蛇運行的方向
timeInterval = 200; // 時間間隔，毫秒
paused = false; // 暫停標(biāo)志
score = 0; // 得分
countMove = 0; // 吃到食物前移動的次數(shù)
// 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
// 初始化蛇體，如果橫向位置超過20個，長度為10，否則為橫向位置的一半
int initArrayLength = maxX 20 ? 10 : maxX / 2;
nodeArray.clear();
for (int i = 0; i initArrayLength; ++i) {
int x = maxX / 2 + i;//maxX被初始化為20
int y = maxY / 2; //maxY被初始化為30
//nodeArray[x,y]: [10,15]-[11,15]-[12，15]~~[20,15]
//默認(rèn)的運行方向向上，所以游戲一開始nodeArray就變?yōu)椋?/p>
// [10，14]-[10，15]-[11，15]-[12，15]~~[19，15]
nodeArray.addLast(new Node(x, y));
matrix[x][y] = true;
}
// 創(chuàng)建食物
food = createFood();
matrix[food.x][food.y] = true;
}
public void changeDirection(int newDirection) {
// 改變的方向不能與原來方向同向或反向
if (direction % 2 != newDirection % 2) {
direction = newDirection;
}
}
/**
* 運行一次
* @return
*/
public boolean moveOn() {
Node n = (Node) nodeArray.getFirst();
int x = n.x;
int y = n.y;
// 根據(jù)方向增減坐標(biāo)值
switch (direction) {
case UP:
y--;
break;
case DOWN:
y++;
break;
case LEFT:
x--;
break;
case RIGHT:
x++;
break;
}
// 如果新坐標(biāo)落在有效范圍內(nèi)，則進行處理
if ((0 = x x maxX) (0 = y y maxY)) {
if (matrix[x][y]) { // 如果新坐標(biāo)的點上有東西（蛇體或者食物）
if (x == food.x y == food.y) { // 吃到食物，成功
nodeArray.addFirst(food); // 從蛇頭贈長
// 分?jǐn)?shù)規(guī)則，與移動改變方向的次數(shù)和速度兩個元素有關(guān)
int scoreGet = (10000 - 200 * countMove) / timeInterval;
score += scoreGet 0 ? scoreGet : 10;
countMove = 0;
food = createFood(); // 創(chuàng)建新的食物
matrix[food.x][food.y] = true; // 設(shè)置食物所在位置
return true;
} else // 吃到蛇體自身，失敗
return false;
} else { // 如果新坐標(biāo)的點上沒有東西（蛇體），移動蛇體
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; // 觸到邊線，失敗
}
public void run() {
running = true;
while (running) {
try {
Thread.sleep(timeInterval);
} catch (Exception e) {
break;
}
if (!paused) {
if (moveOn()) {
setChanged(); // Model通知View數(shù)據(jù)已經(jīng)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;
// 隨機獲取一個有效區(qū)域內(nèi)的與蛇體和食物不重疊的位置
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，只負(fù)責(zé)對數(shù)據(jù)的顯示,而不用理會游戲的控制邏輯
*/
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();
// 創(chuàng)建頂部的分?jǐn)?shù)顯示
labelScore = new JLabel("Score:");
cp.add(labelScore, BorderLayout.NORTH);
// 創(chuàng)建中間的游戲顯示區(qū)域
paintCanvas = new Canvas();
paintCanvas.setSize(canvasWidth + 1, canvasHeight + 1);
paintCanvas.addKeyListener(control);
cp.add(paintCanvas, BorderLayout.CENTER);
// 創(chuàng)建底下的幫助欄
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();
}
}
希望采納
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