我的俄羅斯方塊項(xiàng)目總結(jié)1

獲獎(jiǎng)學(xué)員：陳啟壯

所獲獎(jiǎng)項(xiàng)：三等獎(jiǎng)

內(nèi)容

俄羅斯方塊一共三個(gè)類中間用等號(hào)隔開

軟件的開發(fā)過(guò)程

1 明確業(yè)務(wù)需求

用自然語(yǔ)言，將業(yè)務(wù)功能描述清楚

...

2 業(yè)務(wù)分析

找到有哪些業(yè)務(wù)對(duì)象,和圖片的分析

tetris(俄羅斯方塊)

    ｜－－ score 累計(jì)分?jǐn)?shù)
    ｜－－ lines 銷毀的行數(shù)
    ｜－－ Wall（墻 20行x10列）
           ｜－－ 20row(行)
                  ｜－－10 col cell(列)
    ｜－－ tetromino（4格方塊，有7種形態(tài)）   
           ｜－－ 4 cell
    ｜－－nextOne 下一個(gè)準(zhǔn)備下落的方塊
          ｜－－ 4 cell

3 數(shù)據(jù)模型,一切業(yè)務(wù)對(duì)象轉(zhuǎn)換為數(shù)字表示

場(chǎng)地按照行列劃分為20x10格子

格子有屬性row,col,color

4 類 設(shè)計(jì)

Tetris
    |-- int score
    |-- int lines
    |-- Cell[20][10] wall
    |-- Tetromino tetromino
    |     |--Cell[4] cells
             |-- row
             |-- col
             |-- color

5 算法設(shè)計(jì)，就是如何利用數(shù)據(jù)的計(jì)算實(shí)現(xiàn)軟件的功能

4格方塊的初始形態(tài)： I S Z J L T O

就在初始數(shù)據(jù)的數(shù)值狀態(tài)設(shè)計(jì)

四格方塊的下落計(jì)算：就是將每個(gè)格子的row+1

就是將下落的業(yè)務(wù)功能，轉(zhuǎn)換為數(shù)字計(jì)算實(shí)現(xiàn)

左右移動(dòng)

下落流程控制：控制方塊下落與墻之間的控制關(guān)系

1　合理的文字流程描述

2　分析文字描述中的功能(動(dòng)作)為方法

3　用流程控制語(yǔ)句連接方法實(shí)現(xiàn)功能

4 嚴(yán)格測(cè)試結(jié)果!TestCase

左右移動(dòng)流程控制

分?jǐn)?shù)計(jì)算

界面的繪制

鍵盤事件控制

旋轉(zhuǎn)流程控制

加速下降流程控制

開始流程控制(Timer)

暫停流程控制

繼續(xù)流程控制

結(jié)束流程控制

首先是Cell類，最基本的類包含3個(gè)私有屬性和get,set方法，重寫Object類的toString輸出方法，并規(guī)定格子所具有的3個(gè)移動(dòng)功能

package com.tarena.tetris;

//包：小寫英文字母，域名倒寫.項(xiàng)目名

/**

* 最小的格子

 */
public class Cell{
    private int row;
    private int col;
    private int color;
    public Cell(int row, int col, int color) {
        super();
        this.row = row;
        this.col = col;
        this.color = color;
    }
    public int getCol() {
        return col;
    }
    public void setCol(int col) {
        this.col = col;
    }
    public int getColor() {
        return color;
    }
    public void setColor(int color) {
        this.color = color;
    }
    public int getRow() {
        return row;
    }
    public void setRow(int row) {
        this.row = row;
    }
   public void left(){
        col--;
    }
   public void right(){
        col++;
    }
    public void drop(){
        row++;
    }
    public String toString(){
        return row+","+col;
    }
}
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package com.tarena.tetris;
import java.util.Arrays;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.JPanel;//是能夠顯示的矩形面板區(qū)域
import javax.swing.JFrame;//窗口框
import javax.swing.border.LineBorder;//實(shí)現(xiàn)邊框
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
/*

* 俄羅斯方塊類

* 俄羅斯方塊 擴(kuò)展了(extends)系統(tǒng)的顯示面板，增加了墻和

* 正在下落的方塊

 * */
public class Tetris extends JPanel{
    public static final int ROWS = 20;
    public static final int COLS= 10;
    /*代表方塊下落著陸的墻*/
    private Cell[][] wall = new Cell[ROWS][COLS];
    /*是正在下落的方塊*/
    private Tetromino tetromino;
    /*下一個(gè)進(jìn)入的方塊*/
    private Tetromino nextOne;
    private static int score;
    private int lines;
    Timer timer;
    private boolean gameOver = false;
    private boolean pause = false;//暫停
    private static final int[] SCORE_LEVEL={0,1,4,10,100};
    private static final Graphics Graphics = null;
    /*銷毀（destory)滿行*/             //     0 1 2  3  4
    /*在Tetris中添加方法,檢查游戲是否結(jié)束*/
    public void rotateRightAction(){
        tetromino.rotateRight();
        if(outOfBounds()||coincide()){
            tetromino.rotateLeft();
        }
    }
    public void rotateLeftAction(){
        tetromino.rotateLeft();
        if(outOfBounds()||coincide()){
            tetromino.rotateRight();
        }
    }
    /*在Tetris中添加方法,檢查游戲是否結(jié)束*/
    private boolean gameOver(){
        gameOver = wall[0][4]!=null;
        return gameOver;
    }
    /*在Tetris中添加方法*/
    public void hardDropAction(){
        while(canDrop()){
            tetromino.softDrop();
            }
        tetrominoLandToWall();
        destroy();
        if(gameOver()){
            gameOverAction();
        }
        nextTetromino();
    }
    public void destroy(){
        int lines = 0;//統(tǒng)計(jì)本次銷毀的行數(shù)
        for(int row = 0 ;row<wall.length;row++){
            Cell[] line = wall[row];
            if(fullCell(line)){
                clearLine(row,wall);
                lines++;//每消除一行就累計(jì)加1
            }
        }
        score += SCORE_LEVEL[lines];
        this.lines +=lines;
    }
    public static void clearLine(int row,Cell[][] wall ){
        for(int i=row;i>1;i--){
            System.arraycopy(wall[i-1],0,wall[i],0,wall[i].length);
        }
        Arrays.fill(wall[0],null);
    }
    public static boolean fullCell(Cell []line){
        for(int col = 0;col<line.length;col++){
            if(line[col]==null) {
                return false;//找到空格子，這行沒(méi)有滿
            }
        }
        return true;
    }
    public String toString(){//顯示全部的墻
        String str = "";
        for(int row = 0;row<ROWS;row++){
            Cell[] line = wall[row];
            for(int col = 0;col<COLS;col++){
                Cell cell = line[col];
                if(tetromino.contains (row,col)){
                    str +=row+","+col+"  ";
                }else{
                    str = str + cell + " ";
                    }
            }
            str +="\n";
        }
        return str;
    }
    /*4格方塊下降流程
     * 方塊移動(dòng)到區(qū)域最下方或是著地到其他方塊上無(wú)法移動(dòng)時(shí)，
     * 就會(huì)固定到該處，而新的方法快出現(xiàn)在區(qū)域上方開始下落。
     * 如果能下降就繼續(xù)下降，
     * 否則就著陸到墻上，并且生成（隨機(jī)）下一個(gè)方塊
     * */
    public void softDropAction(){
        if(canDrop()){//如果能下降
            tetromino.softDrop();//方塊繼續(xù)下降
        }else{
            tetrominoLandToWall();//著陸到墻上
            destroy();//
            if(gameOver()){
                gameOverAction();
            }
            nextTetromino();//生產(chǎn)（隨機(jī)）下一個(gè)方塊
        }
    }
    private void startGameAction(){
        gameOver = false;
        pause = false;
        score = 0;
        lines = 0;
        emptyWall();
        nextTetromino();
        repaint();
        timer = new Timer();
        timer.schedule(new TimerTask(){
            public void run(){
                softDropAction();
                repaint();
             }
         }, 500, 500);
    }
    private void emptyWall() {
        for(int row=0;row<ROWS;row++){
            Arrays.fill(wall[row],null);
        }
        
    }
    /*清理游戲結(jié)束現(xiàn)場(chǎng)，如：停止定時(shí)器等*/
    private void gameOverAction() {
            timer.cancel();//停止定時(shí)器
    }
    /*檢查 方塊 是否能夠繼續(xù)下落：到底最低部，或者墻上
     * 的下方有方塊,返回false不能下降，返回true可以下降
     * */
    public boolean canDrop(){
        //檢查到底部
        Cell[] cells = tetromino.getCells();
        for(Cell cell:cells){
            if(cell.getRow()==ROWS-1){
                return false;
            }
        }
        //檢查墻上下方是否有方塊
        for(Cell cell:cells){
            int row = cell.getRow();
            int col = cell.getCol();
            Cell block = wall[row+1][col];
            if(block!=null){
                return false;
            }
        }
        return true;
    }
    /*方塊“著陸”到墻上,
     * 取出每個(gè)小cell
     * 找到cell的行號(hào)row和列號(hào)col
     * 將cell放置到wall[row][col]位置上
     * */
    public void tetrominoLandToWall(){
        Cell[] cells = tetromino.getCells();
        for(Cell cell:cells){
            int row = cell.getRow();
            int col = cell.getCol();
            wall[row][col] = cell;
        }
    }
    /*生產(chǎn)（隨機(jī)）下一個(gè)方塊
     * 1 下一個(gè)變?yōu)楫?dāng)前的
     * 2 隨機(jī)產(chǎn)生下一個(gè)
     * */
    public void nextTetromino(){
        if(nextOne==null){//第一次nextOne是null時(shí)候先生產(chǎn)一個(gè)
            nextOne = Tetromino.randomTetromino();
        }
        tetromino = nextOne;//下一個(gè)變?yōu)楫?dāng)前的
        nextOne = Tetromino.randomTetromino();//隨機(jī)產(chǎn)生下一個(gè)
        if(tetromino==null){//處理第一次使用時(shí)候下一個(gè)是null
            tetromino=Tetromino.randomTetromino();
        }
    }
    /*以格子為單位左右移動(dòng)方塊
     * 1）如果遇到左右邊界就不能移動(dòng)了
     * 2）如果與墻上的格子相撞就不能移動(dòng)了
     * 變通為：
     * 1）先將方塊左移動(dòng)，
     * 2）檢查(移動(dòng)結(jié)果是否出界)，或者(重合)
     * 3）如果檢查失敗，就右移的回來(lái)
     *
     * */
    public void moveLeftAction(){
        tetromino.moveLeft();
        if(outOfBounds() || coincide()){
            tetromino.moveRight();
            
        }
    }
    private boolean outOfBounds() {
        Cell[] cells = tetromino.getCells();
        for (int i = 0; i < cells.length; i++) {
            Cell cell = cells[i];
            int row = cell.getRow();
            int col = cell.getCol();
            if(row == ROWS||col<0||col>=COLS){
                return true;
            }
        }
        return false;
    }
    private boolean coincide() {
        Cell[] cells = tetromino.getCells();
        for (int i = 0; i < cells.length; i++) {
            Cell cell = cells[i];
            int row = cell.getRow();
            int col = cell.getCol();
            if(row >0&&row<ROWS&&col<COLS&&col>0
                    &&wall[row][col]!=null){
                return true;//重合
            }
        }
        return false;
    }
    public void moveRightAction(){
        tetromino.moveRight();
        if(outOfBounds() || coincide()){
            tetromino.moveLeft();
        }
    }
    public static final int CELL_SIZE = 25;
    /*在Tetris.java中添加main方法 作為軟件的啟動(dòng)方法*/
    public static void main(String []args){
        JFrame frame = new JFrame("俄羅斯方塊");
        int wigth =(COLS+8)*CELL_SIZE +100;
        int height =ROWS*CELL_SIZE +100;
        frame.setSize(wigth,height);
        frame.setLocationRelativeTo(null);//居中
        frame.setDefaultCloseOperation(
            JFrame.EXIT_ON_CLOSE);//設(shè)置關(guān)閉窗口就關(guān)閉軟件
        frame.setLayout(null);//取消默認(rèn)布局，取消自動(dòng)充滿
        Tetris panel = new Tetris();
        panel.setLocation(45,25);
        panel.setSize((COLS+8)*CELL_SIZE,ROWS*CELL_SIZE);
        panel.setBorder(new LineBorder(Color.black));
        frame.add(panel);//窗口中添加面板
        frame.setVisible(true);//顯示窗口時(shí)候調(diào)用paint()
        panel.action();
    }
    /*動(dòng)作方法，這里是讓軟件開始動(dòng)作，*/
    public void action(){
        //wall[18][2] = new Cell(18,2,0xff0000);
        startGameAction();
        
        //重繪方法－>盡快調(diào)用paint()
        //startGameAction();
        //this 是當(dāng)前Tetris面板
        this.requestFocus();//為當(dāng)前面板請(qǐng)求獲得輸入焦點(diǎn)
        //this對(duì)象就獲得了輸入焦點(diǎn)，以后任何的
        //鍵盤輸入(包括左右方向鍵)目標(biāo)就是這個(gè)面板對(duì)象了！
        //addKeyLIstener添加鍵盤監(jiān)聽，監(jiān)聽那些按鍵輸入了
        this.addKeyListener(new KeyAdapter(){
            public void keyPressed(KeyEvent e) {
                int key = e.getKeyCode();//key按鍵
                if(gameOver){
                    if(key==KeyEvent.VK_S){
                        startGameAction();//啟動(dòng)游戲開始流程
                    }
                    return;
                }
                if(pause){
                    if(key==KeyEvent.VK_C){
                        continueAction();
                    }return;
                }
                //System.out.println("Type:"+e.getKeyCode());
                
                switch(key){
                case KeyEvent.VK_RIGHT :moveRightAction();break;
                case KeyEvent.VK_LEFT :moveLeftAction();break;
                case KeyEvent.VK_DOWN :softDropAction();break;
                case KeyEvent.VK_UP :rotateRightAction();break;
                case KeyEvent.VK_SPACE :hardDropAction();break;
                case KeyEvent.VK_P :pasueAction();break;
                }
                //按鍵－>方塊移動(dòng)方法－>改變方塊數(shù)據(jù)－>repaint()
                //->盡快調(diào)用paint(）－>利用新數(shù)據(jù)繪制
                repaint();
            }

            private void continueAction() {
                pause = false;
                timer = new Timer();
                timer.schedule(new TimerTask(){
                    public void run(){
                        softDropAction();
                        repaint();
                     }
                 }, 500, 500);
            }
            private void pasueAction() {
                pause = true;
                timer.cancel();
                
            }
         });    
    }
    

    //JPanel 類利用paint（涂畫）方法繪制界面
    //子類重寫paint方法可以修改繪圖邏輯
    public static final int BORDER_COLOR = 0x667799;
    public static final int BG_COLOR = 0xC3D5EA;
    public static final int FONT_COLOR = 0;
    public void paint(Graphics g) {
        //g 代表綁定在當(dāng)前面板上的畫筆
        //利用畫筆在當(dāng)前 面板上 繪制了一串字符!
        paintBackground(g);//填充背景
        paintWall(g);//繪制墻
        paintTetromino(g);//繪制當(dāng)前方塊
        paintNextOne(g);//繪制下一個(gè)方塊
        paintScore(g);//繪制分?jǐn)?shù)
        paintTetrisBorder(g);//繪制邊線
        
    }
    
    private void paintScore(Graphics g) {
        int x = 12 * CELL_SIZE;
        int y = 5 * CELL_SIZE;
        Font font = new Font(getFont().getName(),Font.BOLD,25);
        String str = "分?jǐn)?shù)： "+score;
        g.setColor(new Color(FONT_COLOR));
        g.setFont(font);
        g.drawString(str, x, y);
        y+=2*CELL_SIZE;
        str = "行數(shù)： "+lines;
        g.drawString(str, x, y);
        if(gameOver){
            str = "(T_T)！[s]再來(lái)！";
            y+=2*CELL_SIZE;
            g.drawString(str, x, y);
        }
        if(pause){
            str = "[c]繼續(xù)！";
            y+=2*CELL_SIZE;
            g.drawString(str, x, y);
        }else{
            str = "[p]暫停！";
            y+=2*CELL_SIZE;
            g.drawString(str, x, y);
        }
    }
    private void paintNextOne(Graphics g) {
        if(nextOne==null)//如果沒(méi)有4格方塊就返回，不繪制
            return;
        for (Cell cell : nextOne.getCells()) {
            int row = cell.getRow()+1;
            int col = cell.getCol()+9;
            int x = col*CELL_SIZE;
            int y = row*CELL_SIZE;
            g.setColor(new Color(cell.getColor()));
            g.fillRect(x, y, CELL_SIZE, CELL_SIZE);
            g.setColor(new Color(BORDER_COLOR));
            g.drawRect(x, y, CELL_SIZE, CELL_SIZE);
        }
        
    }
    private void paintTetromino(Graphics g) {
        if(tetromino==null)//如果沒(méi)有4格方塊就返回，不繪制
            return;
        for (Cell cell : tetromino.getCells()) {
            int row = cell.getRow();
            int col = cell.getCol();
            int x = col*CELL_SIZE;
            int y = row*CELL_SIZE;
            g.setColor(new Color(cell.getColor()));
            g.fillRect(x, y, CELL_SIZE, CELL_SIZE);
            g.setColor(new Color(BORDER_COLOR));
            g.drawRect(x, y, CELL_SIZE, CELL_SIZE);
        }
        
    }
    private void paintWall(Graphics g) {
        for (int row = 0; row <ROWS; row++) {
            for (int col = 0; col < COLS; col++) {
                Cell cell = wall[row][col];
                int x = col*CELL_SIZE;
                int y = row*CELL_SIZE;
                if(cell == null){
                    //g.setColor(new Color(BORDER_COLOR));
                   // g.drawRect(x, y,
                     //   CELL_SIZE, CELL_SIZE);
                }else{
                    g.setColor(new Color(cell.getColor()));
                    g.fillRect(x, y,
                            CELL_SIZE, CELL_SIZE);
                    g.setColor(new Color(BORDER_COLOR));
                    g.drawRect(col*CELL_SIZE, row*CELL_SIZE,
                        CELL_SIZE, CELL_SIZE);
                }
            }        
        }    
    }
    private void paintBackground(Graphics g) {
        g.setColor(new Color(BG_COLOR));
        g.fillRect(0, 0, getWidth(), getHeight());    
    }
    private void paintTetrisBorder(Graphics g) {
        g.setColor(new Color(BORDER_COLOR));
        g.drawRect(0, 0, CELL_SIZE*COLS, CELL_SIZE*ROWS-1);
        g.drawRect(CELL_SIZE*COLS,0,
            CELL_SIZE*8-1, CELL_SIZE*ROWS-1);    
    }
}
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package com.tarena.tetris;
import java.util.Arrays;
import java.util.Random;
/*
 * 四格方塊類，有7種子類：I?。浴?。凇?。獭
 * */
public abstract class Tetromino {
    public static final int I_COLOR =0xff6600;
    public static final int T_COLOR =0xffff00;
    public static final int S_COLOR =0x66ccff;
    public static final int Z_COLOR =0x00ff00;
    public static final int J_COLOR =0x0000ff;
    public static final int L_COLOR =0xcc00ff;
    public static final int O_COLOR =0xff0000;
    protected Cell[] cells = new Cell[4];
    /*四格方塊的下落，是四個(gè)格子一起下落*/
    public void softDrop(){
        for(int i = 0;i<cells.length;i++){
            cells[i].drop();
        }
    }
    /*向左移動(dòng)一步*/
    public void moveLeft(){
        for(int i = 0;i<cells.length;i++){
            Cell cell = cells[i];//引用賦值
            cell.left();
        }
    }
    public void moveRight(){
        //增強(qiáng)for循環(huán)，是傳統(tǒng)數(shù)組迭代的“簡(jiǎn)化版本”，
        //也稱為foreach循環(huán)（foreach迭代）(java 5以后)
        for(Cell cell:cells){//底層實(shí)現(xiàn)就是經(jīng)典迭代
            cell.right();
        }
    }
    public Cell[] getCells() {
        return cells;
    }
    protected Offset[] states;//旋轉(zhuǎn)的狀態(tài)
    protected class Offset{
        int row0,col0;
        int row1,col1;
        int row2,col2;
        int row3,col3;
        public Offset(int row0, int col0, int row1,
                int col1, int row2, int col2,
                int row3, int col3){
            this.row0 = row0;
            this.col0 = col0;
            this.row1 = row1;
            this.col1 = col1;
            this.row2 = row2;
            this.col2 = col2;
            this.row3 = row3;
            this.col3 = col3;
        }
        
    }
    private int index = 10000-1;
    /*向右轉(zhuǎn)*/
    public void rotateRight(){
        index++;
        Offset offset = states[index%states.length];
        Cell axis = cells[0];//找到軸（axis）的位置
        
        cells[0].setRow(offset.row0+axis.getRow());
        cells[0].setCol(offset.col0+axis.getCol());
        cells[1].setRow(offset.row1+axis.getRow());
        cells[1].setCol(offset.col1+axis.getCol());
        cells[2].setRow(offset.row2+axis.getRow());
        cells[2].setCol(offset.col2+axis.getCol());
        cells[3].setRow(offset.row3+axis.getRow());
        cells[3].setCol(offset.col3+axis.getCol());
    }
    public void rotateLeft(){
        index--;
        Offset offset = states[index%states.length];
        Cell axis = cells[0];//找到軸（axis）的位置

        cells[0].setRow(offset.row0+axis.getRow());
        cells[0].setCol(offset.col0+axis.getCol());
        cells[1].setRow(offset.row1+axis.getRow());
        cells[1].setCol(offset.col1+axis.getCol());
        cells[2].setRow(offset.row2+axis.getRow());
        cells[2].setCol(offset.col2+axis.getCol());
        cells[3].setRow(offset.row3+axis.getRow());
        cells[3].setCol(offset.col3+axis.getCol());
    }
    /*隨機(jī)生成一個(gè)具體方法*/
    public static Tetromino randomTetromino() {
        Random random = new Random();
        int type = random.nextInt(7);//0~6
        switch(type){
        case 0:return new I();
        case 1:return new T();
        case 2:return new S();
        case 3:return new J();
        case 4:return new Z();
        case 5:return new L();
        case 6:return new O();
        
        }
        return null;
    }
    public String toString(){
        return Arrays.toString(cells);
    }
    public boolean contains(int row, int col) {
        for(int i =0;i<cells.length;i++){
            Cell cell = cells[i];
            if(cell.getRow()==row && cell.getCol()==col){
                return true;
            }
        }
        return false;
    }
    
    
}
class I extends Tetromino{
    public I(){
    cells[0] = new Cell(0,4,I_COLOR);
    cells[1] = new Cell(0,3,I_COLOR);
    cells[2] = new Cell(0,5,I_COLOR);
    cells[3] = new Cell(0,6,I_COLOR);
    states = new Offset[]{
        new Offset(0,0,-1,0,1,0,2,0),
        new Offset(0,0,0,-1,0,1,0,2),
        };
    }
}
class T extends Tetromino{
    public T(){
        cells[0] = new Cell(0,4,T_COLOR);
        cells[1] = new Cell(0,3,T_COLOR);
        cells[2] = new Cell(0,5,T_COLOR);
        cells[3] = new Cell(1,4,T_COLOR);
        states = new Offset[]{
                
                new Offset(0,0,1,0,-1,0,0,1),
                new Offset(0,0,0,-1,0,1,1,0),
                new Offset(0,0,1,0,-1,0,0,-1),
                new Offset(0,0,0,1,0,-1,-1,0),
                    };
            }
}
class S extends Tetromino{
    public S(){
        cells[0] = new Cell(0,4,S_COLOR);
        cells[1] = new Cell(0,5,S_COLOR);
        cells[2] = new Cell(1,3,S_COLOR);
        cells[3] = new Cell(1,4,S_COLOR);
        states = new Offset[]{
                new Offset(0,0,-1,0,1,1,0,1),
                new Offset(0,0,0,1,1,-1,1,0),
                    };
            }
}
class Z extends Tetromino{
    public Z(){
        cells[0] = new Cell(0,4,Z_COLOR);
        cells[1] = new Cell(0,3,Z_COLOR);
        cells[2] = new Cell(1,4,Z_COLOR);
        cells[3] = new Cell(1,5,Z_COLOR);
        states = new Offset[]{
                new Offset(0,0,-1,1,0,1,1,0),
                new Offset(0,0,-1,-1,-1,0,0,1),
                    };
            }
}
class J extends Tetromino{
    public J(){
        cells[0] = new Cell(0,4,J_COLOR);
        cells[1] = new Cell(0,3,J_COLOR);
        cells[2] = new Cell(0,5,J_COLOR);
        cells[3] = new Cell(1,5,J_COLOR);
        states = new Offset[]{
                new Offset(0,0,-1,0,1,0,1,-1),
                new Offset(0,0,0,1,0,-1,-1,-1),
                new Offset(0,0,1,0,-1,0,-1,1),
                new Offset(0,0,0,-1,0,1,1,1),
                    };
            }
}
class L extends Tetromino{
    public L(){
        cells[0] = new Cell(0,4,L_COLOR);
        cells[1] = new Cell(0,3,L_COLOR);
        cells[2] = new Cell(0,5,L_COLOR);
        cells[3] = new Cell(1,3,L_COLOR);
        states = new Offset[]{
                new Offset(0,0,-1,0,1,0,-1,-1),
                new Offset(0,0,0,1,0,-1,-1,1),
                new Offset(0,0,1,0,-1,0,1,1),
                new Offset(0,0,0,-1,0,1,1,-1),
                    };
            }
}
class O extends Tetromino{
    public O(){
        cells[0] = new Cell(0,4,O_COLOR);
        cells[1] = new Cell(0,5,O_COLOR);
        cells[2] = new Cell(1,4,O_COLOR);
        cells[3] = new Cell(1,5,O_COLOR);
        states = new Offset[]{
                new Offset(0,0,0,1,1,0,1,1),
                new Offset(0,0,0,1,1,0,1,1),
                
                    };
            }
}