貪喫蛇（java版本）留作回憶【共三份文件：1、 TestSnake.java 2、Snake. java 3、Food.java】

/** *@author:calm_down2010 *1介紹：貪喫蛇是一款經典的遊戲，本着遊戲的精神，今天無聊蛋疼沒事做，就寫了這個東東的簡單版本當練手用，以備日後複習 *2運行環境（軟、硬件環境：裝有jre的機器上都可運行） *3算法設計的思想：1窗口用繼承自Frame的類來寫，用一個內部類（該類是個線程）來實現不斷重畫屏幕 * 2蛇和食物類用一個list來存儲（用一個個小方塊來模擬）其中蛇的移動式move(last),add(first)來實現 * 3蛇的生死是通過自身蛇頭座標與邊界座標作比較並且蛇頭方塊與其餘方塊作碰撞檢測來實現的 *4算法的流程圖（忽略） *5算法設計分析（忽略） *6源代碼（如下） *7運行結果分析（測試正常） *8收穫及體會 （對面向對象思想及對代碼調控更深接觸，更重要的是培養了程序化思維解決問題，整個思路過程我覺得是最好的經歷） */ import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dialog; import java.awt.Frame; import java.awt.Graphics; import java.awt.GridLayout; import java.awt.Image; import java.awt.Label; import java.awt.Panel; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.util.ArrayList; import java.util.List; //import javax.swing.JOptionPane; public class TestSnake extends Frame { Snake snake = new Snake(this); Food food = new Food(); List<Food> foods = new ArrayList<Food>(); Image gOffScreen; public int sleepTime = 500; public int score = 0; // public static JOptionPane jop=new JOptionPane(); public void launchFrame() { foods.add(food); setSize(300,400); setVisible(true); setBackground(Color.GREEN); setTitle("Snake"); setResizable(false); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); new Thread(new SnakeMonitor()).start(); this.addKeyListener(new KeyMonitor()); } //當失敗的時候彈出對話框提示信息 public void createDialog() { final Dialog dialog = new Dialog(this,"提示信息",true); dialog.setSize(200, 100); dialog.setLayout(new GridLayout(2,1)); dialog.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); //提示信息 Panel topPanel = new Panel(); Label label = new Label("oh yean,你輸了，重新再來！"); topPanel.add(label,BorderLayout.CENTER); dialog.add(topPanel); dialog.setVisible(true); } public void paint(Graphics g) { snake.draw(g); for(Food f : foods) { f.draw(g); } g.setColor(Color.ORANGE); g.drawString("您的得分是:" + score, 20, 50); if(snake.isLive == false) // jop.showMessageDialog(this,"you failed,try again!"); createDialog(); } public void update(Graphics g) { if(gOffScreen == null) { gOffScreen = this.createImage(300,400); } Graphics gOff = gOffScreen.getGraphics(); Color c = gOff.getColor(); gOff.setColor(Color.GREEN); gOff.fillRect(0, 0,300,400); paint(gOff); gOff.setColor(c); g.drawImage(gOffScreen, 0, 0, null); } public static void main(String[] args) { new TestSnake().launchFrame(); } private class KeyMonitor extends KeyAdapter { public void keyPressed(KeyEvent e) { snake.keyPressed(e); } } public class SnakeMonitor implements Runnable { public void run() { while(snake.isLive) { repaint(); try { Thread.sleep(sleepTime); } catch (InterruptedException e) { e.printStackTrace(); } } } } }

 

import java.awt.Color; import java.awt.Graphics; import java.awt.Rectangle; import java.awt.event.KeyEvent; import java.util.ArrayList; import java.util.List; public class Snake { TestSnake ts; private int x = 150;//蛇頭橫座標 private int y = 200;//蛇頭縱座標 private int distance = 1; //方塊之間間隙 public static final int DIA = 10; //方塊邊長 private List<Rectangle> rs = new ArrayList<Rectangle>(); public static final int SPEED = 10; //蛇移動速度 public boolean isLive = true; private int round = 0; private Direction snakeDir = Direction.EAST; private enum Direction {EAST,WEST,SOUTH,NORTH} public Snake(TestSnake ts) { this. ts = ts; rs.add(new Rectangle(x,y,DIA,DIA)); rs.add(new Rectangle(x+DIA+distance,y,DIA,DIA)); rs.add(new Rectangle(x+DIA+distance+DIA+distance,y,DIA,DIA)); } public void draw(Graphics g) { Color c = g.getColor(); g.setColor(Color.BLACK); for(Rectangle r : rs) { g.fillRect(r.x,r.y,10,10); } move(); } public void move() { switch (snakeDir) { case WEST: Rectangle rFirst = rs.get(0); rs.add(0, new Rectangle(rFirst.x-SPEED-distance,rFirst.y,DIA,DIA)); rs.remove(rs.size()-1); if(eatFood(ts.foods.get(0))) { ts.foods.add(new Food()); Rectangle rLast = rs.get(rs.size()-1); if(rLast.y == rFirst.y) rs.add(new Rectangle(rLast.x+SPEED+distance,rLast.y,DIA,DIA)); if(rLast.y < rFirst.y) rs.add(new Rectangle(rLast.x,rLast.y-SPEED-distance,DIA,DIA)); if(rLast.y > rFirst.y) rs.add(new Rectangle(rLast.x,rLast.y+SPEED+distance,DIA,DIA)); } //處理邊界 if(rs.get(0).x<=-18) isLive = false; for(int i = 1; i<rs.size()-1; i++) { if(rs.get(i).intersects(rs.get(0))) isLive = false; } break; case EAST: Rectangle r2 = rs.get(0); rs.add(0, new Rectangle(r2.x+SPEED+distance,r2.y,DIA,DIA)); rs.remove(rs.size()-1); if(eatFood(ts.foods.get(0))) { ts.foods.add(new Food()); Rectangle rLast = rs.get(rs.size()-1); if(rLast.y == r2.y) rs.add(new Rectangle(rLast.x+SPEED+distance,rLast.y,DIA,DIA)); if(rLast.y < r2.y) rs.add(new Rectangle(rLast.x,rLast.y-SPEED-distance,DIA,DIA)); if(rLast.y > r2.y) rs.add(new Rectangle(rLast.x,rLast.y+SPEED+distance,DIA,DIA)); } //處理邊界 if(rs.get(0).x >= 307) isLive = false; for(int i = 1; i<rs.size()-1; i++) { if(rs.get(i).intersects(rs.get(0))) isLive = false; } break; case NORTH: Rectangle r3 = rs.get(0); rs.add(0, new Rectangle(r3.x,r3.y-SPEED-distance,DIA,DIA)); rs.remove(rs.size()-1); if(eatFood(ts.foods.get(0))) { ts.foods.add(new Food()); Rectangle rLast = rs.get(rs.size()-1); if(rLast.y == r3.y) rs.add(new Rectangle(rLast.x+SPEED+distance,rLast.y,DIA,DIA)); if(rLast.y < r3.y) rs.add(new Rectangle(rLast.x,rLast.y-SPEED-distance,DIA,DIA)); if(rLast.y > r3.y) rs.add(new Rectangle(rLast.x,rLast.y+SPEED+distance,DIA,DIA)); } //處理邊界 if(rs.get(0).y <= 5) isLive = false; for(int i = 1; i<rs.size()-1; i++) { if(rs.get(i).intersects(rs.get(0))) isLive = false; } break; case SOUTH: Rectangle r4 = rs.get(0); rs.add(0, new Rectangle(r4.x,r4.y+SPEED+distance,DIA,DIA)); rs.remove(rs.size()-1); if(eatFood(ts.foods.get(0))) { ts.foods.add(new Food()); Rectangle rLast = rs.get(rs.size()-1); if(rLast.y == r4.y) rs.add(new Rectangle(rLast.x+SPEED+distance,rLast.y,DIA,DIA)); if(rLast.y < r4.y) rs.add(new Rectangle(rLast.x,rLast.y-SPEED-distance,DIA,DIA)); if(rLast.y > r4.y) rs.add(new Rectangle(rLast.x,rLast.y+SPEED+distance,DIA,DIA)); } //處理邊界 if(rs.get(0).y >= 400) isLive = false; for(int i = 1; i<rs.size()-1; i++) { if(rs.get(i).intersects(rs.get(0))) isLive = false; } break; default: break; } } public boolean eatFood(Food f) { if(rs.get(0).intersects(new Rectangle(f.getX(),f.getY(),10,10))) { ts.foods.remove(f); round++; if(round % 3 == 0) ts.sleepTime -=20; ts.score += 10; return true; } else return false; } public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); switch (keyCode) { case KeyEvent.VK_LEFT: if(snakeDir != Direction.EAST) snakeDir = Direction.WEST; break; case KeyEvent.VK_RIGHT: if(snakeDir != Direction.WEST) snakeDir = Direction.EAST; break; case KeyEvent.VK_UP: if(snakeDir != Direction.SOUTH) snakeDir = Direction.NORTH; break; case KeyEvent.VK_DOWN: if(snakeDir != Direction.NORTH) snakeDir = Direction.SOUTH; break; default: break; } } }

 

import java.awt.Color; import java.awt.Graphics; import java.util.Random; public class Food { private int x; private int y; public static Random r = new Random(); public Food() { init(); } public void init() { x = r.nextInt(230); y = r.nextInt(350); } public void draw(Graphics g) { Color c = g.getColor(); g.setColor(Color.MAGENTA); g.fillRect(x, y, 10, 10); } public int getX() { return x; } public void setX(int x) { this.x = x; } public int getY() { return y; } public void setY(int y) { this.y = y; } }

 

 

這個版本寫的樸素了一些，自己需要界面和功能完善的話有時間自己加