Java语言程序设计的课程设计项目-利用Java实现吞（贪）食蛇游戏项目完整实现实例（第2部分）

1、利用Java实现吞（贪）食蛇游戏项目完整实现实例（第2部分）扩展主窗口的GUI及交换功能1了解ArrayList和LinkedList的用法区别（1）ArrayList是实现了基于动态数组的数据结构，LinkedList基于链表的数据结构。（2）对于随机访问get和set，ArrayList觉得优于LinkedList，因为LinkedList要移动指针。（3）对于新增和删除操作add和remove，LinedList比较占优势，因为ArrayList要移动数据。2添加项目中所需要的各个图像文件主要的图像文件如下3、改变主窗口的默认图标package com.px1987.greedsnake

2、.mainframe;import java.awt.BorderLayout;import java.awt.Image;import java.awt.Toolkit;import javax.swing.JFrame;import javax.swing.JPanel;import com.px1987.greedsnake.util.GreedSnakeAppVO;public class GreedSnakeMainFrame extends JFrame private static final long serialVersionUID = 1L;private JPanel c

3、ontentPanel=null;public GreedSnakeMainFrame()super();initThisMainFrame();contentPanel=new JPanel();contentPanel.setLayout(new BorderLayout();this.setContentPane(contentPanel);this.setSize(AllGreedSnakeGameAppConstant.greedSnakePanelWidth+5, AllGreedSnakeGameAppConstant.greedSnakePanelHeight+5);this.

4、setLocationRelativeTo(null); /将窗口居中显示public void initThisMainFrame()this.setTitle(吞（贪）食蛇游戏);Image oneIconImage=Toolkit.getDefaultToolkit().getImage(getClass().getResource(/images/mainframeIconImage.jpg);this.setIconImage(oneIconImage);this.setResizable(false);this.setDefaultCloseOperation(JFrame.EXI

5、T_ON_CLOSE);this.setAlwaysOnTop(true);4、实现贪食蛇中间面板的背景图的初始化加载package com.px1987.greedsnake.mainframe;import java.awt.BorderLayout;import java.awt.Image;import java.awt.MediaTracker;import java.awt.Toolkit;import javax.swing.JFrame;import javax.swing.JPanel;import com.px1987.greedsnake.util.GreedSnakeA

6、ppVO;public class GreedSnakeMainFrame extends JFrame private static final long serialVersionUID = 1L;private JPanel contentPanel=null;public GreedSnakeMainFrame()super();loadGreenGrassBackgroundImage();initThisMainFrame();contentPanel=new JPanel();contentPanel.setLayout(new BorderLayout();this.setCo

7、ntentPane(contentPanel);e(AllGreedSnakeGameAppConstant.greedSnakePanelWidth+5, AllGreedSnakeGameAppConstant.greedSnakePanelHeight+5);this.setLocationRelativeTo(null); /将窗口居中显示public void initThisMainFrame()this.setTitle(吞（贪）食蛇游戏);Image oneIconImage=Toolkit.getDefaultToolkit().getImage(getClass().get

8、Resource(/images/mainframeIconImage.jpg);this.setIconImage(oneIconImage);this.setResizable(false);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setAlwaysOnTop(true);private Image greenGrassBackGroundImage=null;public Image getGreenSnakeGrassBackGroundImage() return greenGrassBackGroundIma

9、ge;private void loadGreenGrassBackgroundImage() /由于背景图片比较大，需要进行跟踪greenGrassBackGroundImage=Toolkit.getDefaultToolkit().getImage(this.getClass().getResource(/images/greengrass.jpg);MediaTracker oneMediaTracker=new MediaTracker(this);int trackedImageID=0;oneMediaTracker.addImage(greenGrassBackGroundIm

10、age,trackedImageID);tryoneMediaTracker.waitForID(trackedImageID);/oneMediaTracker.waitForAll();catch(Exception e)e.printStackTrace();5、添加封装蛇身实体SnakeBodyAllNodeVO（1）添加SnakeBodyAllNodeVO实体类，包名称为（2）SnakeBodyAllNodeVO实体类的代码package com.px1987.greedsnake.util;import java.util.Arrays;import java.util.Linke

11、dList;import java.util.Random;import com.px1987.greedsnake.mainframe.GreedSnakeMainFrame;public class SnakeBodyAllNodeVO private boolean snakeMatrix;private LinkedList snakeBodyNodeLinkedList =null;public LinkedList getSnakeBodyNodeLinkedList() return snakeBodyNodeLinkedList;private NodeEntity snake

12、FoodTargetNode;public NodeEntity getSnakeFoodTargetNode() return snakeFoodTargetNode;private int maxGridColNumber, maxGridRowNumber;private GreedSnakeMainFrame oneGreedSnakeMainFrame;public SnakeBodyAllNodeVO() public SnakeBodyAllNodeVO(GreedSnakeMainFrame oneGreedSnakeMainFrame) this.oneGreedSnakeM

13、ainFrame = oneGreedSnakeMainFrame;initSnakeBodyAllNode();private void initSnakeBodyAllNode()maxGridColNumber=AllGreedSnakeGameAppConstant.greedSnakePanelWidth/AllGreedSnakeGameAppConstant.someOneNodeWidth;maxGridRowNumber=AllGreedSnakeGameAppConstant.greedSnakePanelHeight/AllGreedSnakeGameAppConstan

14、t.someOneNodeHeight;/* * 保存最大格子数 */GreedSnakeAppVO.getGreedSnakeAppVO().setMaxGridColNumber(maxGridColNumber);GreedSnakeAppVO.getGreedSnakeAppVO().setMaxGridRowNumber(maxGridRowNumber);/* * 实例化LinkedList集合 */snakeBodyNodeLinkedList = new LinkedList();/* * 初始化二维数组snakeMatrix，该数组的长、宽为横、纵格子数 */snakeMat

15、rix = new booleanmaxGridColNumber;for(int i=0; i 20)?10:maxGridColNumber/2;for(int i = 0; i snakeBodyNodeNumber; +i)int snakeBodyNodeColNo = maxGridColNumber/2+i;int snakeBodyNodeRowNo = maxGridRowNumber/2;snakeBodyNodeLinkedList.addLast(new NodeEntity(snakeBodyNodeColNo, snakeBodyNodeRowNo);snakeMa

16、trixsnakeBodyNodeColNosnakeBodyNodeRowNo = true;/格子值为true代表蛇身节点/* * 随机创建食物节点，并在数组中标识出该节点 */snakeFoodTargetNode = createSnakeFoodNode();snakeMatrixsnakeFoodTargetNode.getNodeColNo()snakeFoodTargetNode.getNodeRowNo() = true;public boolean driveSnakeStepMovingOn()/* * 显示出当前的步数 */StringBuffer stepCounte

17、rTextBuffer=new StringBuffer(); /最好不要使用String类stepCounterTextBuffer.append(步数：);stepCounterTextBuffer.append(GreedSnakeAppVO.getGreedSnakeAppVO().getSnakeMovingStepCounter();oneGreedSnakeMainFrame.getOneGreedSnakeMainToolBar().getSnakeMovingStepCounterLabel().setText(stepCounterTextBuffer.toString()

18、;/* * 获得蛇身的开始节点（蛇头）节点的位置（纵、横格子号），并按照运动的方向改变其格子位置号 */NodeEntity snakeBodyFirstNode = (NodeEntity)snakeBodyNodeLinkedList.getFirst();();int currentSnakeHeadNodeRowNo = snakeBodyFirstNode.getNodeRowNo();switch(GreedSnakeAppVO.getGreedSnakeAppVO().getSnakeCurrentMovingDirection()case AllGreedSnakeGameAp

19、pConstant.MovingUPDirection:currentSnakeHeadNodeRowNo-;break;case AllGreedSnakeGameAppConstant.MovingDOWNDirection:currentSnakeHeadNodeRowNo+;break;case AllGreedSnakeGameAppConstant.MovingLEFTDirection:currentSnakeHeadNodeColNo-;break;ion:currentSnakeHeadNodeColNo+;break;/* * 识别蛇身是否与屏幕的四周出现碰壁，则为失败（返

20、回false） */boolean snakeMovingIsNotOutMaxColNo=(0 = currentSnakeHeadNodeColNo)&(currentSnakeHeadNodeColNo GreedSnakeAppVO.getGreedSnakeAppVO().getMaxGridColNumber(); boolean snakeMovingIsNotOutMaxRowNo=(0 = currentSnakeHeadNodeRowNo)&(currentSnakeHeadNodeRowNo 0)? gameScoreResultValue:10);GreedSnakeA

21、ppVO.getGreedSnakeAppVO().setSnakeMovingStepCounter(0);/重新记数snakeFoodTargetNode = createSnakeFoodNode();snakeMatrixsnakeFoodTargetNode.getNodeColNo()snakeFoodTargetNode.getNodeRowNo() = true;return true;else /蛇身相连（碰到自己的身子），失败！return false; else /蛇身前进一格/* * 只要知道蛇头的位置就可以了， 后面一节点在下一时刻的移动位置永远都是前面一节点在没有移

22、动前的位置。 */snakeBodyNodeLinkedList.addFirst(new NodeEntity(currentSnakeHeadNodeColNo,currentSnakeHeadNodeRowNo);snakeMatrixcurrentSnakeHeadNodeColNocurrentSnakeHeadNodeRowNo = true;snakeBodyFirstNode = (NodeEntity)snakeBodyNodeLinkedList.removeLast(); /除掉最后的节点，并返回新的最后节点snakeMatrixsnakeBodyFirstNode.ge

23、tNodeColNo()snakeBodyFirstNode.getNodeRowNo() = false;/初始化新的最后节点数值为falseGreedSnakeAppVO.getGreedSnakeAppVO().setSnakeMovingStepCounter(GreedSnakeAppVO.getGreedSnakeAppVO().getSnakeMovingStepCounter()+1);return true;private NodeEntity createSnakeFoodNode() /* * 用随机函数产生食物出现位置的坐标（值不是true的格子节点），因为蛇身节点的值

24、为true， * 从而可以避免食物出现在蛇身中 */int foodNodeColNo;int foodNodeRowNo;doRandom snakePositionRandom = new Random();foodNodeColNo = snakePositionRandom.nextInt(GreedSnakeAppVO.getGreedSnakeAppVO().getMaxGridColNumber();foodNodeRowNo = snakePositionRandom.nextInt(GreedSnakeAppVO.getGreedSnakeAppVO().getMaxGrid

25、RowNumber();while(snakeMatrixfoodNodeColNofoodNodeRowNo);return new NodeEntity(foodNodeColNo,foodNodeRowNo);6添加SnakeMoveThread线程类（1）添加SnakeMoveThread线程类，实现接口，包名称为（2）编程该SnakeMoveThread线程类package com.px1987.greedsnake.thread;import javax.swing.JOptionPane;import com.px1987.greedsnake.mainframe.GreedSn

26、akeMainFrame;import com.px1987.greedsnake.util.GreedSnakeAppVO;import com.px1987.greedsnake.util.SnakeBodyAllNodeVO;public class SnakeMoveThread implements Runnableprivate GreedSnakeMainFrame oneGreedSnakeMainFrame;private SnakeBodyAllNodeVO oneSnakeBodyAllNodeVO=null;public SnakeBodyAllNodeVO getOneSnakeBodyAllNodeVO() return oneSnakeBodyAllNodeVO;public SnakeMoveThread()public SnakeMoveThread(GreedSnakeMainFrame oneGreedSnakeMainFrame)this.oneGreedSnakeMainFrame = oneGreedSnakeMainFrame;oneSnakeBodyAllNodeVO=new SnakeBodyAllNodeVO(this.one