你不是有個temp的標(biāo)識嗎?可以用這個判斷撒,記錄上一狀態(tài)。
公司主營業(yè)務(wù):成都網(wǎng)站制作、網(wǎng)站設(shè)計(jì)、移動網(wǎng)站開發(fā)等業(yè)務(wù)。幫助企業(yè)客戶真正實(shí)現(xiàn)互聯(lián)網(wǎng)宣傳,提高企業(yè)的競爭能力。成都創(chuàng)新互聯(lián)公司是一支青春激揚(yáng)、勤奮敬業(yè)、活力青春激揚(yáng)、勤奮敬業(yè)、活力澎湃、和諧高效的團(tuán)隊(duì)。公司秉承以“開放、自由、嚴(yán)謹(jǐn)、自律”為核心的企業(yè)文化,感謝他們對我們的高要求,感謝他們從不同領(lǐng)域給我們帶來的挑戰(zhàn),讓我們激情的團(tuán)隊(duì)有機(jī)會用頭腦與智慧不斷的給客戶帶來驚喜。成都創(chuàng)新互聯(lián)公司推出靜寧免費(fèi)做網(wǎng)站回饋大家。
修改如下:
public void keyPressed(KeyEvent e) {
if (start){
switch (e.getKeyCode()){
case KeyEvent.VK_UP:
if(temp==2) break;
move(0,-1);
temp =1;
break;
case KeyEvent.VK_DOWN:
if(temp==1) break;
move(0,1);
temp =2;
break;
case KeyEvent.VK_LEFT:
if(temp==4) break;
move(-1,0);
temp =3;
break;
case KeyEvent.VK_RIGHT:
if(temp==3) break;
move(1,0);
temp =4;
break;
default:
break;
}
}
}
public
class
Snake
implements
Data//蛇類實(shí)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(diǎn)連成
currentFlag
=UPFLAG
;//當(dāng)前的運(yùn)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(yùn)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(diǎn)都坐標(biāo)偏移即運(yùn)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(diǎn)等于其左邊的點(diǎn),像蛇那樣的一縮一張的運(yùn)動
}
}
public
void
moveHeadLeft()//把蛇的頭部轉(zhuǎn)向左邊
{
if(currentFlag
==
RIGHTFLAG
||
currentFlag
==
LEFTFLAG)//如果運(yùn)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(yùn)動方向改為左
}
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
public class InterFace extends JFrame {
/**
* WIDTH:寬
* HEIGHT:高
* SLEEPTIME:可以看作蛇運(yùn)動的速度
* L = 1,R = 2, U = 3, D = 4 左右上下代碼
*/
public static final int WIDTH = 800, HEIGHT = 600, SLEEPTIME = 200, L = 1,R = 2, U = 3, D = 4;
BufferedImage offersetImage= new BufferedImage(WIDTH, HEIGHT,BufferedImage.TYPE_3BYTE_BGR);;
Rectangle rect = new Rectangle(20, 40, 15 * 50, 15 * 35);
Snake snake;
Node node;
public InterFace() {
//創(chuàng)建"蛇"對象
snake = new Snake(this);
//創(chuàng)建"食物"對象
createNode();
this.setBounds(100, 100, WIDTH, HEIGHT);
//添加鍵盤監(jiān)聽器
this.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent arg0) {
System.out.println(arg0.getKeyCode());
switch (arg0.getKeyCode()) {
//映射上下左右4個鍵位
case KeyEvent.VK_LEFT:
snake.dir = L;
break;
case KeyEvent.VK_RIGHT:
snake.dir = R;
break;
case KeyEvent.VK_UP:
snake.dir = U;
break;
case KeyEvent.VK_DOWN:
snake.dir = D;
}
}
});
this.setTitle("貪吃蛇 0.1 By : Easy");
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setVisible(true);
//啟動線程,開始執(zhí)行
new Thread(new ThreadUpadte()).start();
}
public void paint(Graphics g) {
Graphics2D g2d = (Graphics2D) offersetImage.getGraphics();
g2d.setColor(Color.white);
g2d.fillRect(0, 0, WIDTH, HEIGHT);
g2d.setColor(Color.black);
g2d.drawRect(rect.x, rect.y, rect.width, rect.height);
//如果蛇碰撞(吃)到食物,則創(chuàng)建新食物
if (snake.hit(node)) {
createNode();
}
snake.draw(g2d);
node.draw(g2d);
g.drawImage(offersetImage, 0, 0, null);
}
class ThreadUpadte implements Runnable {
public void run() {
//無限重繪畫面
while (true) {
try {
Thread.sleep(SLEEPTIME);
repaint(); //
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
/**
* 創(chuàng)建食物
*/
public void createNode() {
//隨機(jī)食物的出現(xiàn)位置
int x = (int) (Math.random() * 650) + 50,y = (int) (Math.random() * 500) + 50;
Color color = Color.blue;
node = new Node(x, y, color);
}
public static void main(String args[]) {
new InterFace();
}
}
/**
* 節(jié)點(diǎn)類(包括食物和蛇的身軀組成節(jié)點(diǎn))
*/
class Node {
int x, y, width = 15, height = 15;
Color color;
public Node(int x, int y, Color color) {
this(x, y);
this.color = color;
}
public Node(int x, int y) {
this.x = x;
this.y = y;
this.color = color.black;
}
public void draw(Graphics2D g2d) {
g2d.setColor(color);
g2d.drawRect(x, y, width, height);
}
public Rectangle getRect() {
return new Rectangle(x, y, width, height);
}
}
/**
* 蛇
*/
class Snake {
public ListNode nodes = new ArrayListNode();
InterFace interFace;
int dir=InterFace.R;
public Snake(InterFace interFace) {
this.interFace = interFace;
nodes.add(new Node(20 + 150, 40 + 150));
addNode();
}
/**
* 是否碰撞到食物
* @return true 是 false 否
*/
public boolean hit(Node node) {
//遍歷整個蛇體是否與食物碰撞
for (int i = 0; i nodes.size(); i++) {
if (nodes.get(i).getRect().intersects(node.getRect())) {
addNode();
return true;
}
}
return false;
}
public void draw(Graphics2D g2d) {
for (int i = 0; i nodes.size(); i++) {
nodes.get(i).draw(g2d);
}
move();
}
public void move() {
nodes.remove((nodes.size() - 1));
addNode();
}
public synchronized void addNode() {
Node nodeTempNode = nodes.get(0);
//如果方向
switch (dir) {
case InterFace.L:
//判斷是否會撞墻
if (nodeTempNode.x = 20) {
nodeTempNode = new Node(20 + 15 * 50, nodeTempNode.y);
}
nodes.add(0, new Node(nodeTempNode.x - nodeTempNode.width,
nodeTempNode.y));
break;
case InterFace.R:
//判斷是否會撞墻
if (nodeTempNode.x = 20 + 15 * 50 - nodeTempNode.width) {
nodeTempNode = new Node(20 - nodeTempNode.width, nodeTempNode.y);
}
nodes.add(0, new Node(nodeTempNode.x + nodeTempNode.width,
nodeTempNode.y));
break;
case InterFace.U:
//判斷是否會撞墻
if (nodeTempNode.y = 40) {
nodeTempNode = new Node(nodeTempNode.x, 40 + 15 * 35);
}
nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y - nodeTempNode.height));
break;
case InterFace.D:
//判斷是否會撞墻
if (nodeTempNode.y = 40 + 15 * 35 - nodeTempNode.height) {
nodeTempNode = new Node(nodeTempNode.x,40 - nodeTempNode.height);
}
nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y + nodeTempNode.height));
break;
}
}
}
這是一個最基本的界面,下面又不會的地方去查API
import java.awt.*;
import javax.swing.*;
public class View {
JFrame frame;
Container c;
JLabel backgound;
JButton start;
JLabel help;
public void first(){
frame=new JFrame("我的貪吃蛇");
c=frame.getContentPane();
c.setLayout(null);
Font f1=new Font("楷體",Font.BOLD,50);
backgound=new JLabel();
backgound.setBounds(0,0,800,600);
c.add(backgound);
backgound.setLayout(null);
start=new JButton();
start.setBounds(300,70,200,58);
start.setCursor(new Cursor(Cursor.HAND_CURSOR));
start.setBorder(null);
start.setContentAreaFilled(false);
backgound.add(start);
help = new JLabel();
help.setText("游戲幫助");
help.setBounds(180,230,500,50);
help.setForeground(Color.black);
help.setFont(f1);
backgound.add(help);
frame.setSize(800,600);
frame.setResizable(false);
frame.setVisible(true);
}