那些年，我还在学习java
那些年接下来的课程就是java、jsp了,java语言还是很好的，对于我个人而言，只是对它的开发工具不是很满意，就是智能感应还没有自已敲来得快，当然这也是小事；在此已经了解了很多语言了，从C/C++到C#，现在开始学习另一门面向对象的语言，那就是java了，还是从基础开始，数据类型、读取文件、线程、网络编程、图形开发,applet等，还有java有很多包，比如说读取文件的三方包，等到了jsp时，还有javabean、servlet,后面还有SSH，这些内容也不是很多，当然今天只是java,将以一个游戏来完结它，下面来看一看吧。
这是一个很老的游戏—贪吃蛇，简单说一下这个游戏是怎么设计的：由一个主类作为游戏运行的入口，将贪吃蛇分为头、身二个类，还有一个食物类，主类继承自Frame类，通过键盘监听来完成蛇的移动，同时身体也跟着移动，当蛇头撞到食时，身体加增长，食物消，随机生成下一个食物，游戏继续，当蛇头撞到蛇身时，游戏结束，下面看一下代码吧！
1、蛇头类SnakeHead
public class SnakeHead {
/************ 属性区 **************/
/**
* 蛇头的每一节的坐标
*/
public int snakeHeadX;
public int snakeHeadY;
/**
* 蛇头的宽高，由于是正方形，所以宽高一样
*/
public int snakeBodyWidthHeight = 20;
/**
* 蛇头的颜色
*/
public Color color = Color.red;
/**
* 蛇移动的方向，让蛇头自动移动,上、下、左、右
*/
public boolean directionUp, directionDown, directionLeft, directionRight;
/**
* 得到控制台的引用
*/
public SnakeStart snakeStart = null;
/**
* 游戏是否结束
*/
public boolean snakeDead = false;
/**
* 玩家的得分数
*/
public int score = 0;
/************** 方法区 ******************/
/**
* constructor
*
* @param snakeBodyX
* @param snakeHeadY
* @param color
*/
public SnakeHead(int snakeHeadX, int snakeHeadY, SnakeStart snakeStart) {
this.snakeHeadX = snakeHeadX;
this.snakeHeadY = snakeHeadY;
this.snakeStart = snakeStart;
directionRight = true;
}
/**
* 画出蛇头 *
* @param g 画笔，向控制台画出蛇身
*/
public void drawSnakeHead(Graphics g) {
g.setColor(Color.BLACK);
g.drawString("你的得分score："+score, 10, 50);
g.setColor(Color.darkGray);
g.drawRect(snakeHeadX, snakeHeadY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
g.setColor(color);
g.fillRect(snakeHeadX, snakeHeadY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
if (!snakeDead)
autoMoveSnakeHead();
}
/**
* 蛇头的移动,并且吃食物
*/
public void moveSnakeHead(int snakeBodyX, int snakeBodyY) {
// 移动蛇头
this.snakeHeadX += snakeBodyX;
this.snakeHeadY += snakeBodyY;
if (this.snakeHeadX < 0) {
this.snakeHeadX = snakeStart.frameWidth - 20;
}
if (this.snakeHeadX > snakeStart.frameWidth - 20) {
this.snakeHeadX = 0;
}
if (this.snakeHeadY < 15) {
this.snakeHeadY = snakeStart.frmaeHeight - 20;
}
if (this.snakeHeadY + 20 > snakeStart.frmaeHeight) {
this.snakeHeadY = 25;
}
snakeDead();
eatFood();
}
/**
* 吃食物,通过二种检测的方式，对食物进行检测，完善BUG
*/
public void eatFood() {
if ((this.snakeHeadX == snakeStart.snakeFood.snakeFoodX && this.snakeHeadY == snakeStart.snakeFood.snakeFoodY)
|| this.getRectangle().intersects(
snakeStart.snakeFood.getRectangle())) {
snakeStart.snakeFood.isSnakeBody = true;
score+=10;
snakeStart.snakeBody.snakeBody.add(snakeStart.snakeFood);
snakeStart.hasFood = false;
}
}
/**
* 判断蛇是否死了，结束游戏
*/
public void snakeDead() {
for (int i = 0; i < snakeStart.snakeBody.snakeBody.size(); i++) {
if (this.snakeHeadX == snakeStart.snakeBody.snakeBody.get(i).snakeFoodX
&& this.snakeHeadY == snakeStart.snakeBody.snakeBody.get(i).snakeFoodY
&& snakeStart.snakeBody.snakeBody.get(i).isSnakeBody) {
snakeDead = true;
}
}
}
/**
* 自动移动蛇头,按方向
*/
public void autoMoveSnakeHead() {
if (directionUp && !directionDown && !directionLeft && !directionRight) {
moveSnakeHead(0, -20);
}
if (!directionUp && directionDown && !directionLeft && !directionRight) {
moveSnakeHead(0, 20);
}
if (!directionUp && !directionDown && directionLeft && !directionRight) {
moveSnakeHead(-20, 0);
}
if (!directionUp && !directionDown && !directionLeft && directionRight) {
moveSnakeHead(20, 0);
}
snakeStart.snakeBody.moveSnakeBody(this);
}
/**
* 按下键盘的监听函数，移动蛇头
*/
public void keyPressEvent(KeyEvent event) {
int code = event.getKeyCode();
directionUp = directionDown = directionLeft = directionRight = false;
switch (code) {
case KeyEvent.VK_LEFT:
moveSnakeHead(-20, 0);
directionLeft = true;
break;
case KeyEvent.VK_RIGHT:
moveSnakeHead(20, 0);
directionRight = true;
break;
case KeyEvent.VK_UP:
moveSnakeHead(0, -20);
directionUp = true;
break;
case KeyEvent.VK_DOWN:
moveSnakeHead(0, 20);
directionDown = true;
break;
case KeyEvent.VK_SPACE:
break;
default:
moveSnakeHead(0, 0);
break;
}
}
/**
* 得到食物的矩形
*/
public Rectangle getRectangle() {
return new Rectangle(snakeHeadX, snakeHeadY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
}
}
2、蛇身类SnakeBody
public class SnakeBody {
/************ 属性区 **************/
/**
* 蛇身的集合对象
*/
public List<SnakeFood> snakeBody = new ArrayList<SnakeFood>();
/************** 方法区 ******************/
/**
* constructor
*/
public SnakeBody(SnakeHead snakeHead) {
SnakeFood foodOne = new SnakeFood(snakeHead.snakeHeadX,
snakeHead.snakeHeadY, Color.red);
foodOne.isSnakeBody=true;
snakeBody.add(foodOne);
SnakeFood foodTwo = new SnakeFood(snakeHead.snakeHeadX,
snakeHead.snakeHeadY - 20, Color.green);
foodTwo.isSnakeBody=true;
snakeBody.add(foodTwo);
}
/**
* 画出蛇身
*
* @param g
* 画笔，向控制台画出蛇身
*/
public void drawSnakeBody(Graphics g) {
for (int i = 0; i < snakeBody.size(); i++) {
snakeBody.get(i).drawSnakeBody(g);
}
}
/**
* 蛇身的移动
*/
public void moveSnakeBody(SnakeHead snakeHead) {
for (int i = snakeBody.size() - 1; i > 0; i--) {
snakeBody.get(i).snakeFoodX = snakeBody.get(i - 1).snakeFoodX;
snakeBody.get(i).snakeFoodY = snakeBody.get(i - 1).snakeFoodY;
}
snakeBody.get(0).snakeFoodX = snakeHead.snakeHeadX;
snakeBody.get(0).snakeFoodY = snakeHead.snakeHeadY;
}
}
3、食物类
View Code
public class SnakeFood {
/************ 属性区 **************/
/**
* 食物的的坐标
*/
public int snakeFoodX;
public int snakeFoodY;
/**
* 食物的宽高，由于是正方形，所以宽高一样
*/
public int snakeBodyWidthHeight = 20;
/**
* 食物的颜色
*/
public Color color = Color.black;
/**
* 是否是变为了蛇的身体
*/
public boolean isSnakeBody;
/************** 方法区 ******************/
/**
* constructor
*
* @param snakeBodyX
* @param snakeBodyY
* @param color
*/
public SnakeFood(int snakeFoodX, int snakeFoodY, Color color) {
if (snakeFoodY < 30) {
snakeFoodY += 40;
}
this.snakeFoodX = snakeFoodX;
this.snakeFoodY = snakeFoodY;
this.color = color;
}
/**
* 画出食物
*
* @param g
* 画笔，向控制台画出蛇身
*/
public void drawSnakeBody(Graphics g) {
g.setColor(Color.DARK_GRAY);
g.drawRect(snakeFoodX, snakeFoodY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
g.setColor(color);
g.fillRect(snakeFoodX, snakeFoodY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
}
/**
* 得到食物的矩形
*/
public Rectangle getRectangle() {
return new Rectangle(snakeFoodX, snakeFoodY, snakeBodyWidthHeight,
snakeBodyWidthHeight);
}
}
4、控制类
SnackStart5、运行测式
总结
那些年开始学习java，一时还有点不适应，后来觉得也没有什么，现在android开发也使用java，所以学习java是很明显的，正所谓“技多不压身嘛”。此文以回忆那些年学习java的日子。
