Java GUI编程之贪吃蛇游戏简单实现方法【附demo源码下载】

本文实例讲述了java gui编程之贪吃蛇游戏简单实现方法。分享给大家供大家参考，具体如下：

例子简单，界面简陋 请见谅

项目结构如下

constant.jvava 代码如下：

package snake;
/**
 *
 * @author hjn
 *
 */
public class constant {
/**
 * 蛇方移动方向：左边
 */
public static final int left = 0;
/**
 * 蛇方移动方向：右边
 */
public static final int right = 1;
/**
 * 蛇方移动方向：上边
 */
public static final int up = 3;
/**
 * 蛇方移动方向：下边
 */
public static final int down = 4;
/**
 * 界面列数
 */
public static final int cols = 30;
/**
 * 界面行数
 */
public static final int rows = 30;
/**
 * 每个格子边长
 */
public static final int boder_size = 15;
}

node.java代码如下：

package snake;
/**
 * 格子
 *
 * @author hjn
 *
 */
public class node {
/**
 * 所在行数
 */
private int row;
/**
 * 所在列数
 */
private int col;
public node() {
};
public node(int row, int col) {
this.row = row;
this.col = col;
};
/**
 * 蛇将要移动一格时头部格子将所到格子
 *
 * @param dir
 *      蛇前进方向
 * @param node
 *      蛇头所在的格子
 */
public node(int dir, node node) {
if (dir == constant.left) {
this.col = node.getcol() - 1;
this.row = node.getrow();
} else if (dir == constant.right) {
this.col = node.getcol() + 1;
this.row = node.getrow();
} else if (dir == constant.up) {
this.row = node.getrow() - 1;
this.col = node.getcol();
} else {
this.row = node.getrow() + 1;
this.col = node.getcol();
}
}
/**
 * 重写equals方法
 */
public boolean equals(object obj) {
if (obj instanceof node) {
node node = (node) obj;
if (this.col == node.col && this.row == node.row) {
return true;
} else {
return false;
}
} else {
return false;
}
}
public int getrow() {
return row;
}
public void setrow(int row) {
this.row = row;
}
public int getcol() {
return col;
}
public void setcol(int col) {
this.col = col;
}
public string tostring() {
return "col:" + this.col + " row:" + this.row;
}
}

egg.java代码如下：

package snake;
import java.awt.color;
import java.awt.graphics;
import java.util.random;
/**
 * 蛋，蛇的食物
 *
 * @author nan
 *
 */
public class egg extends node {
/**
 * 蛋的颜色
 */
color color;
/**
 * 随机函数
 */
public static random random = new random();
/**
 * 构造函数 蛋出现在固定位置
 *
 * @param row
 *      所在第几行数
 * @param col
 *      所在第几列数
 */
public egg(int row, int col) {
super(row, col);
this.color = color.green;
}
/**
 * 构造函数 蛋随机出现
 *
 */
public egg() {
super();
int col = random.nextint(constant.cols - 4) + 2;
int row = random.nextint(constant.rows - 4) + 2;
this.setcol(col);
this.setrow(row);
}
/**
 * 画蛋
 * @param g 画笔
 */
void draw(graphics g) {
if (this.color == color.green) {
this.color = color.red;
} else {
this.color = color.green;
}
g.setcolor(this.color);
int bodersize = constant.boder_size;
g.filloval(this.getcol() * bodersize, this.getrow() * bodersize,
bodersize, bodersize);
}
public color getcolor() {
return color;
}
public void setcolor(color color) {
this.color = color;
}
}

snake.java代码如下：

package snake;
import java.awt.color;
import java.awt.graphics;
import java.awt.event.keyevent;
import java.util.arraylist;
import java.util.list;
/**
 * 蛇
 *
 * @author hjn
 *
 */
public class snake {
/**
 * 前进的方向
 */
int dir;
/**
 * 蛇的身体,由一个格子node集合组成
 */
list<node> nodelist = new arraylist<node>();
/**
 * 是否越界
 */
boolean isoverstep = false;
/**
 * 构造方法默认开始方向向左 ，蛇身有3个格子 ，位置在20行，15列
 */
public snake() {
this.dir = constant.left;
for (int i = 0; i < 3; i++) {
node node = new node(20, 15 + i);
this.nodelist.add(node);
}
}
/**
 * 蛇前进
 */
void forward() {
addnode();
nodelist.remove(nodelist.size() - 1);
}
/**
 * 蛇前进的时候头部增加格子，私有方法
 */
private void addnode() {
node node = nodelist.get(0);
node = new node(dir, node);
nodelist.add(0, node);
}
/**
 * 是否吃到蛋，蛇身是否有格子跟蛋重叠，所以重写了node的equals方法
 *
 * @param egg蛋
 * @return boolean
 */
boolean eategg(egg egg) {
if (nodelist.contains(egg)) {
addnode();
return true;
} else {
return false;
}
}
/**
 * 画自己
 *
 * @param g画笔
 */
void draw(graphics g) {
g.setcolor(color.black);
for (int i = 0; i < this.nodelist.size(); i++) {
node node = this.nodelist.get(i);
if (node.getcol() > (constant.cols - 2) || node.getcol() < 2
|| node.getrow() > (constant.rows - 2) || node.getrow() < 2) {
this.isoverstep = true;
}
g.fillrect(node.getcol() * constant.boder_size, node.getrow()
* constant.boder_size, constant.boder_size,
constant.boder_size);
}
forward();
}
/**
 * 键盘事件，来确定前进方向，有左右上下4个方向
 *
 * @param e键盘监听事件
 */
void keypress(keyevent e) {
int key = e.getkeycode();
switch (key) {
case keyevent.vk_left:
if (this.dir != constant.left)
this.dir = constant.left;
break;
case keyevent.vk_right:
if (this.dir != constant.right)
this.dir = constant.right;
break;
case keyevent.vk_up:
if (this.dir != constant.up)
this.dir = constant.up;
break;
case keyevent.vk_down:
if (this.dir != constant.down)
this.dir = constant.down;
break;
default:
break;
}
}
public int getdir() {
return dir;
}
public void setdir(int dir) {
this.dir = dir;
}
public list<node> getnodelist() {
return nodelist;
}
public void setnodelist(list<node> nodelist) {
this.nodelist = nodelist;
}
public boolean isoverstep() {
return isoverstep;
}
public void setoverstep(boolean isoverstep) {
this.isoverstep = isoverstep;
}
}

主界面mainframe.java代码如下：

package snake;
import java.awt.color;
import java.awt.font;
import java.awt.frame;
import java.awt.graphics;
import java.awt.event.keyadapter;
import java.awt.event.keyevent;
import java.awt.event.windowadapter;
import java.awt.event.windowevent;
/**
 * 贪吃蛇展示页面
 *
 * @author hjn
 *
 */
public class mainframe extends frame {
/**
 * 版本
 */
private static final long serialversionuid = -5227266702753583633l;
/**
 * 背景颜色
 */
color color = color.gray;
/**
 * 蛋
 */
static egg egg = new egg();
/**
 * 蛇
 */
snake snake = new snake();
/**
 * 游戏是否失败
 */
boolean gameover = false;
/**
 * 给画笔起一个线程
 */
paintthread paintthread = new paintthread();
/**
 * 构造方法
 */
public mainframe() {
init();
}
/**
 * 界面初始化
 */
void init() {
this.setbounds(200, 200, constant.cols * constant.boder_size,
constant.rows * constant.boder_size);
this.setresizable(true);
this.repaint();
/**
 * 窗口关闭监听事件
 */
this.addwindowlistener(new windowadapter() {
@override
public void windowclosing(windowevent e) {
system.exit(0);
}
});
/**
 * 添加键盘监听事件
 */
this.addkeylistener(new keymomiter());
/**
 * 画笔线程启动
 */
new thread(paintthread).start();
}
/**
 * 画笔画界面
 */
public void paint(graphics g) {
color c = g.getcolor();
g.setcolor(color.gray);
g.fillrect(0, 0, constant.cols * constant.boder_size, constant.rows
* constant.boder_size);
g.setcolor(color.dark_gray);
for (int i = 0; i < constant.rows; i++) {
g.drawline(0, i * constant.boder_size, constant.cols
* constant.boder_size, i * constant.boder_size);
}
for (int i = 0; i < constant.cols; i++) {
g.drawline(i * constant.boder_size, 0, i * constant.boder_size,
constant.rows * constant.boder_size);
}
g.setcolor(color.yellow);
g.setfont(new font("宋体", font.bold, 20));
g.drawstring("score:" + getscore(), 10, 60);
if (gameover) {
g.setcolor(color.red);
g.drawstring("game over", 100, 60);
this.paintthread.pause = true;
}
g.setcolor(c);
if (snake.eategg(egg)) {
egg = new egg();
}
snake.draw(g);
egg.draw(g);
}
/**
 * 获取分数
 *
 * @return int 分数
 */
int getscore() {
return snake.getnodelist().size();
}
/**
 * 画笔的线程
 *
 * @author hjn
 */
class paintthread implements runnable {
private boolean isrun = true;
private boolean pause = false;
@override
public void run() {
while (isrun) {
if (pause) {
continue;
} else {
if (snake.isoverstep == true) {
gameover = true;
}
repaint();
}
try {
thread.sleep(100);
} catch (interruptedexception e) {
e.printstacktrace();
}
}
}
/**
 * 暂停
 */
public void pause() {
this.pause = true;
}
/**
 * 重新开始
 */
public void restart() {
this.pause = true;
snake = new snake();
}
/**
 * 游戏结束
 */
public void gameover() {
isrun = false;
}
}
/**
 * 停止
 */
void stop() {
gameover = true;
}
/**
 * 键盘监听器
 *
 * @author hjn
 *
 */
class keymomiter extends keyadapter {
@override
public void keypressed(keyevent e) {
super.keypressed(e);
int key = e.getkeycode();
if (key == keyevent.vk_f2) {
paintthread.restart();
} else {
snake.keypress(e);
}
}
}
/**
 * 启动程序入口
 *
 * @param args
 */
@suppresswarnings("deprecation")
public static void main(string[] args) {
mainframe mainframe = new mainframe();
mainframe.show();
}
}

运行效果：

附：完整实例代码点击此处本站下载。

希望本文所述对大家java程序设计有所帮助。

原文链接：http://blog.csdn.net/h348592532/article/details/14451639