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：
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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：
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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：
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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：
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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：
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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() {@overridepublic 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;@overridepublic 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 {@overridepublic 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
