项目进度

本周我们将之前未理解的代码，重新进行了理解消化，并且将完整代码加入了注释，代码如下：

package resource;import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.Timer;
import java.util.Random;@SuppressWarnings("serial")
public class ControlSnake extends JPanel implements ActionListener {Random rand;ArrayList<Point> list, listBody;String str, str1;static boolean key;int x, y, dx, dy, fx, fy, flag;int snakeBody;int speed;public ControlSnake() {snakeBody = 1;str = "上下左右方向键控制 P键暂停...";//显示操作方法str1 = "现在的长度为:" + snakeBody;//显示统计的蛇身长度key = true;flag = 1;speed = 700;//初始化速度rand = new Random();list = new ArrayList<Point>();listBody = new ArrayList<Point>();//定义一个数组动态记录蛇身长度x = 5;y = 5;list.add(new Point(x, y));listBody.add(list.get(0));dx = 10;//初始化移动每次距离dy = 0;fx = rand.nextInt(30) * 10 + 5;// 2fy = rand.nextInt(30) * 10 + 5;// 2setBackground(Color.WHITE);setSize(new Dimension(318, 380));final Timer time = new Timer(speed, this);time.start();
//根据键盘监听，通过上下左右键操作游戏，以及暂停、开始游戏addKeyListener(new KeyAdapter() {public void keyPressed(KeyEvent e) {if (e.getKeyCode() == 37) {dx = -10;dy = 0;} else if (e.getKeyCode() == 38) {dx = 0;dy = -10;} else if (e.getKeyCode() == 39) {dx = 10;dy = 0;} else if (e.getKeyCode() == 40) {dx = 0;dy = 10;} else if (e.getKeyCode() == 80) {if (flag % 2 == 1) {time.stop();}if (flag % 2 == 0) {time.start();}flag++;}}});}
//画线（边框）、设置食物颜色、蛇身颜色等，并用白色进行填充public void paint(Graphics g) {g.setColor(Color.WHITE);g.fillRect(0, 0, 400, 400);g.setColor(Color.DARK_GRAY);g.drawLine(3, 3, 305, 3);g.drawLine(3, 3, 3, 305);g.drawLine(305, 3, 305, 305);g.drawLine(3, 305, 305, 305);g.setColor(Color.PINK);for (int i = 0; i < listBody.size(); i++) {g.fillRect(listBody.get(i).x, listBody.get(i).y, 9, 9);//根据不断加长的蛇身填充颜色}g.fillRect(x, y, 9, 9);g.setColor(Color.ORANGE);g.fillRect(fx, fy, 9, 9);g.setColor(Color.DARK_GRAY);str1 = "现在的长度为:" + snakeBody;g.drawString(str, 10, 320);g.drawString(str1, 10, 335);}public void actionPerformed(ActionEvent e) {x += dx;y += dy;if (makeOut() == false) {JOptionPane.showMessageDialog(null, "重新开始......");//碰到边界重新开始speed = 700;snakeBody = 1;x = 5;y = 5;list.clear();list.add(new Point(x, y));listBody.clear();listBody.add(list.get(0));dx = 10;dy = 0;}addPoint(x, y);if (x == fx && y == fy) {speed = (int) (speed * 0.8);// 速度增加参数if (speed < 200) {speed = 100;//随蛇身长度增长速度逐渐变慢}fx = rand.nextInt(30) * 10 + 5;// 2fy = rand.nextInt(30) * 10 + 5;// 2snakeBody++;// 2} // 2repaint();}public void addPoint(int xx, int yy) {// 动态的记录最新发生的50步以内的移动过的坐标// 并画出最新的snakeBodyif (list.size() < 100) {// 蛇身长度最长为100list.add(new Point(xx, yy));} else {list.remove(0);list.add(new Point(xx, yy));}if (snakeBody == 1) {listBody.remove(0);listBody.add(0, list.get(list.size() - 1));} else {listBody.clear();if (list.size() < snakeBody) {for (int i = list.size() - 1; i > 0; i--) {listBody.add(list.get(i));}} else {for (int i = list.size() - 1; listBody.size() < snakeBody; i--) {listBody.add(list.get(i));}}}}
//碰到边界即为游戏失败public boolean makeOut() {if ((x < 3 || y < 3) || (x > 305 || y > 305)) {return false;}for (int i = 0; i < listBody.size() - 1; i++) {for (int j = i + 1; j < listBody.size(); j++) {if (listBody.get(i).equals(listBody.get(j))) {return false;}}}return true;}
}

package resource;import java.awt.*;
import javax.swing.*;@SuppressWarnings("serial")
public class MainClass extends JFrame {ControlSnake control;Toolkit kit;Dimension dimen;public static void main(String[] args) {new MainClass("my snake");}public MainClass(String s) {super(s);control = new ControlSnake();control.setFocusable(true);kit = Toolkit.getDefaultToolkit();dimen = kit.getScreenSize();add(control);setLayout(new BorderLayout());setLocation(dimen.width / 3, dimen.height / 3);// dimen.width/3,dimen.height/3setSize(FWIDTH, FHEIGHT);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setResizable(false);setVisible(true);}public static final int FWIDTH = 315;public static final int FHEIGHT = 380;//限定游戏中贪吃蛇的活动范围
}

成员贡献

20145231 熊梓宏： 代码注释，博客编写；

20145210 姚思羽：代码完善；

两人共同完成：代码理解。

项目总结

至此，我们的项目已全部完成，在此次做项目的过程中，我们学习到了很多javaAPI的使用，掌握了很多类的用法，看到了java语言的强大用途，加强了想要学好Java的决心。对于我们的项目，虽然是在前人的基础上完成的，但是我依然觉得，我们能够理解代码、完善代码，这是对我们的努力的肯定。通过这次的项目，我们学会了严谨的思考问题，考虑问题更加全面周到，是一次不错的体验。