誰可以幫我找錯誤
區域Yard
package com;
//public class Yard {
span style="font-size:14px;">import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class Yard extends Frame {
// 活動區域
private static final int ROWS = 30;// 行數
private static final int COLS = 30;// 列數
private static final int BLOCK_SIZE = 15;// 格子尺寸
private Font fontGameOver = new Font("宋體", Font.BOLD, 50);//字體
private int score = 0;// 分數
Image offScreenImage = null;// 創建一個位圖，防止閃爍
Snake snake = new Snake(this);// 創建一個蛇
Egg e = new Egg();// 隨機創建一個蛋；
PaintThread paintThread = new PaintThread();
private boolean gameOver=false;//判斷游戲是否結束
public static int getROWS() {
return ROWS;
}
public static int getCOLS() {
return COLS;
}
public static int getBLOCK_XIZE() {
return BLOCK_SIZE;
}
public int getScore() {
return score;
}
public void launch() {// 設定表單
this.setLocation(300, 300);// 視窗出現位置
this.setSize(COLS * BLOCK_SIZE, ROWS * BLOCK_SIZE);// 視窗大小
// 添加關閉事件
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
this.setVisible(true);// 視窗是否顯示
this.addKeyListener(new KeyMonitor());// 監聽按鍵
new Thread(paintThread).start();
/// 啟動執行緒
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new Yard().launch();
}
public void setScore(int score) {// 設定分數
this.score = score;
}
@Override
public void paint(Graphics g) {// 畫
// 設定背景顏色
Color c = g.getColor();
g.setColor(Color.GRAY);
g.fillRect(0, 0, COLS * BLOCK_SIZE, ROWS * BLOCK_SIZE);
// 設定線的顏色
g.setColor(Color.DARK_GRAY);
// 畫線
for (int i = 1; i < ROWS; i++) {
g.drawLine(0, i * BLOCK_SIZE, COLS * BLOCK_SIZE, BLOCK_SIZE * i);
}
for (int i = 1; i < ROWS; i++) {
g.drawLine(i * BLOCK_SIZE, 0, BLOCK_SIZE * i, ROWS * BLOCK_SIZE);
}
g.setColor(Color.YELLOW);
g.drawString("score:" + score, 10, 60);// 畫分數
if(gameOver) {
g.setFont(fontGameOver);
g.drawString("游戲結束", 120, 180);
paintThread.pause();
}
g.setColor(c);
snake.eat(e);
snake.draw(g);// 畫蛇
e.draw(g);// 畫蛋
}
@Override
public void update(Graphics g) {
if (offScreenImage == null) {
offScreenImage = this.createImage(COLS * BLOCK_SIZE, ROWS * BLOCK_SIZE);
}
Graphics gOff = offScreenImage.getGraphics();
paint(gOff);
g.drawImage(offScreenImage, 0, 0, null);
}
public void stop() {
gameOver=true;//游戲結束
}
private class PaintThread implements Runnable {
private boolean running = true;
private boolean pause = false;
public void run() {
while(running) {
if(pause) continue;
else repaint();
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void pause() {
this.pause = true;
}
public void reStart() {
this.pause = false;
snake = new Snake(Yard.this);
gameOver = false;
}
public void gameOver() {
running = false;
}
}
private class KeyMonitor extends KeyAdapter {
// 監聽鍵值
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if(key == KeyEvent.VK_F2) {
paintThread.reStart();
}
snake.keyPressed(e);
}
}
</span>
}
蛇snake
package com;
public class snake {
<span style="font-size:14px;">import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
public class Snake {
private Node head = null;// 頭結點
private Node tail = null;// 尾結點
private int size = 0;// 結點個數
private Node node = new Node(20, 30, Direction.LEFT);// 初始結點(蛇)
private Yard y;//在哪個范圍內
public Snake(Yard y) {
head = node;
tail = node;
size = 1;
this.y=y;
}
public void addToTail() {// 結點添加到尾巴
Node node = null;
switch (tail.dir) {
case LEFT:
node = new Node(tail.row, tail.col + 1, tail.dir);// 向左新建結點
break;
case RIGHT:
node = new Node(tail.row, tail.col - 1, tail.dir);
break;
case UP:
node = new Node(tail.row + 1, tail.col, tail.dir);
break;
case DOWN:
node = new Node(tail.row - 1, tail.col, tail.dir);
break;
}
// 添加尾結點
tail.next = node;
node.prev = tail;
tail = node;
size++;
}
public void addToHead() {// 結點添加到頭
Node node = null;
switch (head.dir) {
case LEFT:
node = new Node(head.row, head.col - 1, head.dir);
break;
case UP:
node = new Node(head.row - 1, head.col, head.dir);
break;
case RIGHT:
node = new Node(head.row, head.col + 1, head.dir);
break;
case DOWN:
node = new Node(head.row + 1, head.col, head.dir);
break;
}
node.next = head;
head.prev = node;
head = node;
size++;
}
private void deleteFromTail() {
if (size == 0)
return;
tail = tail.prev;
tail.next = null;
}
private void checkDead() {
// 檢驗是否死亡
if(head.row < 2 || head.col < 0 || head.row > Yard.getROWS()|| head.col > Yard.getCOLS()) {
y.stop();
}
for(Node n = head.next; n != null; n = n.next) {
if(head.row == n.row && head.col == n.col) {
y.stop();
}
}
}
private void move() {// 蛇移動
addToHead();// 把尾巴結點添加到頭
deleteFromTail();
checkDead();
}
public void draw(Graphics g) {// 畫結點
if (size <= 0)
return;
move();
for (Node n = head; n != null; n = n.next) {
n.draw(g);
}
}
private class Node {
int w = Yard.getBLOCK_XIZE();// 結點寬度
int h = Yard.getBLOCK_XIZE();// 結點高度
int row, col;// 結點位置
Direction dir = Direction.LEFT;// 初始結點向左
Node next = null;// 下一節
Node prev = null;// 前一節
Node(int row, int col, Direction dir) {
this.row = row;
this.col = col;
this.dir = dir;
}
void draw(Graphics g) {// 畫出結點
Color c = g.getColor();
g.setColor(Color.black);
g.fillRect(Yard.getBLOCK_XIZE() * col, Yard.getBLOCK_XIZE() * row, w, h);
g.setColor(c);
}
}
public void eat(Egg e) {
if(this.getRect().intersects(e.getRect())) {
e.reAppear();
this.addToHead();
y.setScore(y.getScore() + 5);
}
}
private Rectangle getRect() {
return new Rectangle(Yard.getBLOCK_XIZE() * head.col, Yard.getBLOCK_XIZE() * head.row, head.w, head.h);
}
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
switch (key) {
case KeyEvent.VK_LEFT:
if (head.dir != Direction.RIGHT)
head.dir = Direction.LEFT;
break;
case KeyEvent.VK_RIGHT:
if (head.dir != Direction.LEFT)
head.dir = Direction.RIGHT;
break;
case KeyEvent.VK_UP:
if (head.dir != Direction.DOWN)
head.dir = Direction.UP;
break;
case KeyEvent.VK_DOWN:
if (head.dir != Direction.UP)
head.dir = Direction.DOWN;
break;
}
}
</span>
生成物Egg
package com;
//public class Egg {
<span style="font-size:14px;">import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.util.Random;
public class Egg {
int row,col;
int w=Yard.getBLOCK_XIZE();
int h=Yard.getBLOCK_XIZE();
private static Random r=new Random();//蛋的隨機生成位置
private Color color=Color.green;//蛋初始顏色
public int getRow() {
return row;
}
public void setRow(int row) {
this.row = row;
}
public int getCol() {
return col;
}
public void setCol(int col) {
this.col = col;
}
public Egg(int row, int col) {
this.row = row;
this.col = col;
}
public Egg(){
this(r.nextInt(Yard.getROWS()-2)+2, r.nextInt(Yard.getCOLS()));
}
public void reAppear(){//重新設定蛋的位置
this.row = r.nextInt(Yard.getROWS()-2) + 2;
this.col = r.nextInt(Yard.getCOLS());
}
public Rectangle getRect() {
return new Rectangle(Yard.getBLOCK_XIZE() * col, Yard.getBLOCK_XIZE() * row, w, h);
}
void draw(Graphics g) {// 畫出蛋
Color c = g.getColor();
g.setColor(color);
g.fillOval(Yard.getBLOCK_XIZE() * col, Yard.getBLOCK_XIZE() * row, w, h);
g.setColor(c);
if(color==Color.green){
color=color.red;
}else{
color=color.green;
}
// }
}
</span>
}
控制鍵direction
package com;
public class direction {
<span style="font-size:14px;"public enum Direction {
LEFT,RIGHT,UP,DOWN
}
</span>
}
我把所有的包名之類的都搬進來了
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