Java语言实现的贪吃蛇

package SnakeGame; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; import java.awt.geom.*; public class GameFrame extends JFrame { private Toolkit tempKit; //这个类是抽象窗口工具包的所有实际实现的抽象超类。 Toolkit的子类用于将各种组件绑定到特定的本地工具包实现。 private int horizontalGrid, verticalGrid; private int singleWidthX, singleHeightY; private int cooPos; private Snake mainSnake; //蛇类的实例化对象 private LinkedList eatedBean; { eatedBean = new LinkedList(); } private Iterator snakeSq; //初始化迭代器 public javax.swing.Timer snakeTimer; //计时器，在没有发生方向改变的情况下，蛇身可以以某一速度不断移动 private int direction = 2; //初始化移动方向 private int score; //记录得分 private String info; private Point bean, eatBean; { bean = new Point(); } private boolean flag; private JMenuBar infoMenu; private JMenu[] tempMenu; private JMenuItem[] tempMenuItem; private JRadioButtonMenuItem[] levelMenuItem, versionMenuItem; private JLabel scoreLabel; { scoreLabel = new JLabel(); } private Graphics2D g; private ImageIcon snakeHead; { snakeHead = new ImageIcon( "LOGO.gif" ); } private ConfigMenu configMenu; private boolean hasStoped = true; public GameFrame() { this.tempKit = this.getToolkit(); this.setSize( tempKit.getScreenSize() ); this.setGrid( 60, 40, 5 ); this.getContentPane().setBackground( ColorGroup.COLOR_BACK ); this.setUndecorated( true ); this.setResizable( false ); this.addKeyListener( new KeyHandler() ); //加入键盘监听器 GameFrame.this.snakeTimer = new javax.swing.Timer( 80, new TimerHandler() ); this.getContentPane().add( scoreLabel, BorderLayout.SOUTH ); this.scoreLabel.setFont( new Font( "Fixedsys", Font.BOLD, 15 ) ); //设置分数记录Label的字体和字号 this.scoreLabel.setText( "Pause[SPACE] - Exit[ESC]" ); //空格键暂停，Esc按钮退出 this.configMenu = new ConfigMenu( this ); this.setVisible( true ); } public void setGrid( int temp1, int temp2, int temp3 ) //设置格的大小，即蛇运动的标准 { this.horizontalGrid = temp1; //水平格 this.verticalGrid = temp2; //垂直网格 this.singleWidthX = this.getWidth() / temp1; this.singleHeightY = this.getHeight() / temp2; this.cooPos = temp3; } private class KeyHandler extends KeyAdapter { public void keyPressed( KeyEvent e ) { if( e.getKeyCode() == 27 ) //Esc键的处理方式 { snakeTimer.stop(); if( JOptionPane.showConfirmDialog( null, "Are you sure to exit?" ) == 0 ) { System.exit( 0 ); } snakeTimer.start(); } else if( e.getKeyCode() == 37 && mainSnake.snakeDirection != 2 )//left { direction = 4; } else if( e.getKeyCode() == 39 && mainSnake.snakeDirection != 4 )//right { direction = 2; } else if( e.getKeyCode() == 38 && mainSnake.snakeDirection != 3 )//up { direction = 1; } else if( e.getKeyCode() == 40 && mainSnake.snakeDirection != 1 )//down { direction = 3; } else if( e.getKeyCode() == 32 ) //设置space暂停键的处理方式 { if( !hasStoped ) { if( !flag ) //暂停 { snakeTimer.stop(); configMenu.setVisible( true ); //菜单栏显示 configMenu.setMenuEnable( false ); //菜单栏速度、颜色不可修改 flag = true; } else //不暂停 { snakeTimer.start(); configMenu.setVisible( false ); //菜单栏隐藏 configMenu.setMenuEnable( true ); flag = false; } } } } } private class TimerHandler implements ActionListener { public synchronized void actionPerformed( ActionEvent e ) { Point temp = (Point) mainSnake.getLast(); snakeSq = mainSnake.iterator(); while ( snakeSq.hasNext() ) { Point tempPoint = (Point)snakeSq.next(); if( temp.equals( tempPoint ) && snakeSq.hasNext() != false ) //游戏接下来的点在线性表中而且蛇身还没有结束 { snakeTimer.stop(); stopGame(); JOptionPane.showMessageDialog( null, "Your Score is " + score + ", You Loss!" ); } } System.out.println( temp.x + " " + temp.y ); //在框里输出 if( (temp.x == 0 && direction == 4) || (temp.x == horizontalGrid-1 && direction == 2) || (temp.y == 0 && direction == 1) || (temp.y == verticalGrid-1 && direction == 3) ) //撞墙 { snakeTimer.stop(); stopGame(); JOptionPane.showMessageDialog( null, "Your Score is " + score + ", You Loss!" ); } if( direction != mainSnake.snakeReDirection ) { moveSnake( direction ); } mainSnake.drawSnake( getGraphics(), singleWidthX, singleHeightY, cooPos ); drawBeanAndEBean( getGraphics() ); } } public void stopGame() { this.hasStoped = true; this.snakeTimer.stop(); Graphics2D g = (Graphics2D) GameFrame.this.getGraphics(); g.setColor( ColorGroup.COLOR_BACK ); super.paint( g ); configMenu.setVisible( true ); } public void resetGame() //重置 { System.gc(); this.hasStoped = false; Graphics2D g = (Graphics2D) GameFrame.this.getGraphics(); g.setColor( ColorGroup.COLOR_BACK ); super.paint( g ); this.mainSnake = new Snake(); this.createBean( bean ); this.eatedBean.clear(); mainSnake.drawSnake( getGraphics(), singleWidthX, singleHeightY, cooPos ); this.snakeTimer.start(); this.direction = 2; this.score = 0; this.scoreLabel.setText( "Pause[SPACE] - Exit[ESC]" ); } private void moveSnake( int direction ) //蛇的移动 { if( mainSnake.checkBeanIn( this.bean ) ) //每吃一个豆，分数加一百 { this.score += 100; this.scoreLabel.setText( this.info + " Current Score:" + this.score ); this.eatedBean.add( new Point(this.bean) ); this.createBean( this.bean ); } mainSnake.changeDirection( (Point) mainSnake.getLast(), direction ); Point temp = (Point) mainSnake.getFirst(); if( eatedBean.size() != 0 ) { if( eatedBean.getFirst().equals( temp ) ) { eatedBean.remove( 0 ); } else { mainSnake.clearEndSnakePiece( getGraphics(), temp.x, temp.y, singleWidthX, singleHeightY, cooPos ); mainSnake.removeTail(); } } else { mainSnake.clearEndSnakePiece( getGraphics(), temp.x, temp.y, singleWidthX, singleHeightY, cooPos ); mainSnake.removeTail(); } } private void drawBeanAndEBean( Graphics g ) { g.setColor( ColorGroup.COLOR_BEAN ); this.drawPiece( g, this.bean.x, this.bean.y ); g.setColor( ColorGroup.COLOR_EATEDBEAN ); snakeSq = eatedBean.iterator(); while ( snakeSq.hasNext() ) { Point tempPoint = (Point)snakeSq.next(); this.drawPiece( g, tempPoint.x, tempPoint.y ); } } private void drawPiece( Graphics g, int x, int y ) { g.fillRoundRect( this.singleWidthX * x + 1, this.singleHeightY * y + 1, this.singleWidthX - 2, this.singleHeightY - 2, this.cooPos, this.cooPos ); } private void createBean( Point temp ) //随机产生豆子 { LP: while( true ) { temp.x = (int) (Math.random() * this.horizontalGrid); temp.y = (int) (Math.random() * this.verticalGrid); snakeSq = mainSnake.iterator(); while ( snakeSq.hasNext() ) { if( snakeSq.next().equals( new Point( temp.x, temp.y ) ) ) { continue LP; } } break; } } }