java 俄罗斯方块

Question

请高手指教 当方块到达底部时 怎么样固定方块 并且让新的方块产生并且下落 这个过程我暂时没法实现 请高手帮忙指点迷津 希望在详细讲解其过程并且通俗易懂 谢谢
我是一个初学者 所以希望高手们 不要整些复杂的代码上来 第一我可能看不懂 第二发代码时希望详细讲述其过程 注释和讲解相当重要啊

Answer 1

import java.awt.*;
import java.awt.event.*;
//俄罗斯方块类
public class Mytest extends Frame{
public static boolean isPlay=false;
public static int level=1,score=0;
public static TextField scoreField,levelField;

public static MyTimer timer;
GameCanvas gameScr;

public static void main(String[] argus){
Mytest ers = new Mytest("俄罗斯方块游戏");
WindowListener win_listener = new WinListener();
ers.addWindowListener(win_listener);
}

// 俄罗斯方块类的构造方法
Mytest(String title){
super(title);

setSize(600,480);
setLayout(new GridLayout(1,2));

gameScr = new GameCanvas();
gameScr.addKeyListener(gameScr);

timer = new MyTimer(gameScr);
timer.setDaemon(true);
timer.start();
timer.suspend();

add(gameScr);

Panel rightScr = new Panel();
rightScr.setLayout(new GridLayout(2,1,0,30));
rightScr.setSize(120,500);
add(rightScr);

// 右边信息窗体的布局
MyPanel infoScr = new MyPanel();
infoScr.setLayout(new GridLayout(4,1,0,5));
infoScr.setSize(120,300);
rightScr.add(infoScr);

// 定义标签和初始值
Label scorep = new Label("分数:",Label.LEFT);
Label levelp = new Label("级数:",Label.LEFT);
scoreField = new TextField(8);
levelField = new TextField(8);
scoreField.setEditable(false);
levelField.setEditable(false);
infoScr.add(scorep);
infoScr.add(scoreField);
infoScr.add(levelp);
infoScr.add(levelField);
scorep.setSize(new Dimension(20,60));
scoreField.setSize(new Dimension(20,60));
levelp.setSize(new Dimension(20,60));
levelField.setSize(new Dimension(20,60));
scoreField.setText("0");
levelField.setText("1");

// 右边控制按钮窗体的布局
MyPanel controlScr = new MyPanel();
controlScr.setLayout(new GridLayout(5,1,0,5));
rightScr.add(controlScr);

// 定义按钮play
Button play_b = new Button("开始游戏");
play_b.setSize(new Dimension(50,200));
play_b.addActionListener(new Command(Command.button_play,gameScr));

// 定义按钮Level UP
Button level_up_b = new Button("提高级数");
level_up_b.setSize(new Dimension(50,200));
level_up_b.addActionListener(new Command(Command.button_levelup,gameScr));

// 定义按钮Level Down
Button level_down_b =new Button("降低级数");
level_down_b.setSize(new Dimension(50,200));
level_down_b.addActionListener(new Command(Command.button_leveldown,gameScr));

// 定义按钮Level Pause
Button pause_b =new Button("游戏暂停");
pause_b.setSize(new Dimension(50,200));
pause_b.addActionListener(new Command(Command.button_pause,gameScr));

// 定义按钮Quit
Button quit_b = new Button("退出游戏");
quit_b.setSize(new Dimension(50,200));
quit_b.addActionListener(new Command(Command.button_quit,gameScr));

controlScr.add(play_b);
controlScr.add(level_up_b);
controlScr.add(level_down_b);
controlScr.add(pause_b);
controlScr.add(quit_b);
setVisible(true);
gameScr.requestFocus();
}
}

//重写MyPanel类，使Panel的四周留空间
class MyPanel extends Panel{
public Insets getInsets(){
return new Insets(30,50,30,50);
}
}

//游戏画布类
class GameCanvas extends Canvas implements KeyListener{
final int unitSize = 30; //小方块边长
int rowNum; //正方格的行数
int columnNum; //正方格的列数
int maxAllowRowNum; //允许有多少行未削
int blockInitRow; //新出现块的起始行坐标
int blockInitCol; //新出现块的起始列坐标
int [][] scrArr; //屏幕数组
Block b; //对方快的引用

// 画布类的构造方法
GameCanvas(){
rowNum = 15;
columnNum = 10;
maxAllowRowNum = rowNum - 2;
b = new Block(this);
blockInitRow = rowNum - 1;
blockInitCol = columnNum/2 - 2;
scrArr = new int [32][32];
}

// 初始化屏幕，并将屏幕数组清零的方法
void initScr(){
for(int i=0;i<rowNum;i++)
for (int j=0; j<columnNum;j++)
scrArr[i][j]=0;
b.reset();
repaint();
}

// 重新刷新画布方法
public void paint(Graphics g){
for(int i = 0; i < rowNum; i++)
for(int j = 0; j < columnNum; j++)
drawUnit(i,j,scrArr[i][j]);
}

// 画方块的方法
public void drawUnit(int row,int col,int type){
scrArr[row][col] = type;
Graphics g = getGraphics();
switch(type){ //表示画方快的方法
case 0: g.setColor(Color.black);break; //以背景为颜色画
case 1: g.setColor(Color.blue);break; //画正在下落的方块
case 2: g.setColor(Color.magenta);break; //画已经落下的方法
}
g.fill3DRect(col*unitSize,getSize().height-(row+1)*unitSize,unitSize,unitSize,true);
g.dispose();
}

public Block getBlock(){
return b; //返回block实例的引用
}

// 返回屏幕数组中(row,col)位置的属性值
public int getScrArrXY(int row,int col){
if (row < 0 || row >= rowNum || col < 0 || col >= columnNum)
return(-1);
else
return(scrArr[row][col]);
}

// 返回新块的初始行坐标方法
public int getInitRow(){
return(blockInitRow); //返回新块的初始行坐标
}

// 返回新块的初始列坐标方法
public int getInitCol(){
return(blockInitCol); //返回新块的初始列坐标
}

// 满行删除方法
void deleteFullLine(){
int full_line_num = 0;
int k = 0;
for (int i=0;i<rowNum;i++){
boolean isfull = true;

L1:for(int j=0;j<columnNum;j++)
if(scrArr[i][j] == 0){
k++;
isfull = false;
break L1;
}
if(isfull) full_line_num++;
if(k!=0 && k-1!=i && !isfull)
for(int j = 0; j < columnNum; j++){
if (scrArr[i][j] == 0)
drawUnit(k-1,j,0);
else
drawUnit(k-1,j,2);
scrArr[k-1][j] = scrArr[i][j];
}
}
for(int i = k-1 ;i < rowNum; i++){
for(int j = 0; j < columnNum; j++){
drawUnit(i,j,0);
scrArr[i][j]=0;
}
}
Mytest.score += full_line_num;
Mytest.scoreField.setText(""+Mytest.score);
}

// 判断游戏是否结束方法
boolean isGameEnd(){
for (int col = 0 ; col <columnNum; col ++){
if(scrArr[maxAllowRowNum][col] !=0)
return true;
}
return false;
}

public void keyTyped(KeyEvent e){
}

public void keyReleased(KeyEvent e){
}

// 处理键盘输入的方法
public void keyPressed(KeyEvent e){
if(!Mytest.isPlay)
return;
switch(e.getKeyCode()){
case KeyEvent.VK_DOWN:b.fallDown();break;
case KeyEvent.VK_LEFT:b.leftMove();break;
case KeyEvent.VK_RIGHT:b.rightMove();break;
case KeyEvent.VK_SPACE:b.leftTurn();break;
}
}
}

//处理控制类
class Command implements ActionListener{
static final int button_play = 1; //给按钮分配编号
static final int button_levelup = 2;
static final int button_leveldown = 3;
static final int button_quit = 4;
static final int button_pause = 5;
static boolean pause_resume = true;

int curButton; //当前按钮
GameCanvas scr;

// 控制按钮类的构造方法
Command(int button,GameCanvas scr){
curButton = button;
this.scr=scr;
}

// 按钮执行方法
public void actionPerformed (ActionEvent e){
switch(curButton){
case button_play:if(!Mytest.isPlay){
scr.initScr();
Mytest.isPlay = true;
Mytest.score = 0;
Mytest.scoreField.setText("0");
Mytest.timer.resume();
}
scr.requestFocus();
break;
case button_levelup:if(Mytest.level < 10){
Mytest.level++;
Mytest.levelField.setText(""+Mytest.level);
Mytest.score = 0;
Mytest.scoreField.setText(""+Mytest.score);
}
scr.requestFocus();
break;
case button_leveldown:if(Mytest.level > 1){
Mytest.level--;
Mytest.levelField.setText(""+Mytest.level);
Mytest.score = 0;
Mytest.scoreField.setText(""+Mytest.score);
}
scr.requestFocus();
break;
case button_pause:if(pause_resume){
Mytest.timer.suspend();
pause_resume = false;
}else{
Mytest.timer.resume();
pause_resume = true;
}
scr.requestFocus();
break;
case button_quit:System.exit(0);
}
}
}

//方块类
class Block {
static int[][] pattern = {
{0x0f00,0x4444,0x0f00,0x4444},//用十六进至表示，本行表示长条四种状态
{0x04e0,0x0464,0x00e4,0x04c4},
{0x4620,0x6c00,0x4620,0x6c00},
{0x2640,0xc600,0x2640,0xc600},
{0x6220,0x1700,0x2230,0x0740},
{0x6440,0x0e20,0x44c0,0x8e00},
{0x0660,0x0660,0x0660,0x0660}
};
int blockType; //块的模式号（0-6）
int turnState; //块的翻转状态（0-3）
int blockState; //快的下落状态
int row,col; //块在画布上的坐标
GameCanvas scr;

// 块类的构造方法
Block(GameCanvas scr){
this.scr = scr;
blockType = (int)(Math.random() * 1000)%7;
turnState = (int)(Math.random() * 1000)%4;
blockState = 1;
row = scr.getInitRow();
col = scr.getInitCol();
}

// 重新初始化块，并显示新块
public void reset(){
blockType = (int)(Math.random() * 1000)%7;
turnState = (int)(Math.random() * 1000)%4;
blockState = 1;
row = scr.getInitRow();
col = scr.getInitCol();
dispBlock(1);
}

// 实现“块”翻转的方法
public void leftTurn(){
if(assertValid(blockType,(turnState + 1)%4,row,col)){
dispBlock(0);
turnState = (turnState + 1)%4;
dispBlock(1);
}
}

// 实现“块”的左移的方法
public void leftMove(){
if(assertValid(blockType,turnState,row,col-1)){
dispBlock(0);
col--;
dispBlock(1);
}
}

// 实现块的右移
public void rightMove(){
if(assertValid(blockType,turnState,row,col+1)){
dispBlock(0);
col++;
dispBlock(1);
}
}

// 实现块落下的操作的方法
public boolean fallDown(){
if(blockState == 2)
return(false);
if(assertValid(blockType,turnState,row-1,col)){
dispBlock(0);
row--;
dispBlock(1);
return(true);
}else{
blockState = 2;
dispBlock(2);
return(false);
}
}

// 判断是否正确的方法
boolean assertValid(int t,int s,int row,int col){
int k = 0x8000;
for(int i = 0; i < 4; i++){
for(int j = 0; j < 4; j++){
if((int)(pattern[t][s]&k) != 0){
int temp = scr.getScrArrXY(row-i,col+j);
if (temp<0||temp==2)
return false;
}
k = k >> 1;
}
}
return true;
}

// 同步显示的方法
public synchronized void dispBlock(int s){
int k = 0x8000;
for (int i = 0; i < 4; i++){
for(int j = 0; j < 4; j++){
if(((int)pattern[blockType][turnState]&k) != 0){
scr.drawUnit(row-i,col+j,s);
}
k=k>>1;
}
}
}
}

//定时线程
class MyTimer extends Thread{
GameCanvas scr;

public MyTimer(GameCanvas scr){
this.scr = scr;
}

public void run(){
while(true){
try{
sleep((10-Mytest.level + 1)*100);
}
catch(InterruptedException e){}
if(!scr.getBlock().fallDown()){
scr.deleteFullLine();
if(scr.isGameEnd()){
Mytest.isPlay = false;
suspend();
}else
scr.getBlock().reset();
}
}
}
}

class WinListener extends WindowAdapter{
public void windowClosing (WindowEvent l){
System.exit(0);
}
}

Answer 2

哇，二L弄什么啊