package tetris;
import java.util.Random;
import java.lang.Math;
import java.awt.event.*;
import java.awt.*;

public class TetrixPiece {//TetrisClient的引用
    TetrixBoard tb;// 定义落下的方块的形状，包含NoShapepublic static int NoShape = 0, ZShape = 1, SShape = 2, LineShape =3,TShape = 4, SquareShape = 5, LShape = 6, MirroredShape = 7;public static int[][][] coordsTable = {{ { 0, 0 },   { 0, 0 },   { 0, 0 },   { 0, 0 } },{ { 0, -1 },  { 0, 0 },   { -1, 0 },  { -1, 1 } },{ { 0, -1 },  { 0, 0 },   { 1, 0 },   { 1, 1 } },{ { 0, -1 },  { 0, 0 },   { 0, 1 },   { 0, 2 } },{ { -1, 0 },  { 0, 0 },   { 1, 0 },   { 0, 1 } },{ { 0, 0 },   { 1, 0 },   { 0, 1 },   { 1, 1 } },{ { -1, -1 }, { 0, -1 },  { 0, 0 },   { 0, 1 } },{ { 1, -1 },  { 0, -1 },  { 0, 0 },   { 0, 1 } }};// 大小public static final int SIZE = 20;    // 下落的补偿public static final int SPEED = 20;// 是否停止public boolean stoped = false;// 是否按下向下键public boolean speedup = false;// 出现的位置,包括绝对位置和网格坐标public int x, y;public int gridX, gridY;private Color color = null;// 颜色数组public static Color[] colorArr = {new Color(255,20,147),new Color(0,0,139),new Color(139,0,0),new Color(128,128,0),new Color(56,94,15),new Color(0,128,128),new Color(139,101,8),new Color(255,99,71)};// 声明形状变量private int pieceShape;// 声明方块类的坐标变量，右四个小方块的相对坐标组成private int coords[][] = new int[4][2];// 构造函数public TetrixPiece(TetrixBoard tb) {this.tb = tb;setRandomShape();}// 随机设定方块类的形状public void setRandomShape() {Random r = new Random();int shapeIndex = r.nextInt(7) + 1;setShape(shapeIndex);} // 设定方块类的指定形状public void setShape(int shape) {// 设定方块对象的各小方块的坐标for (int i = 0; i < 4; i++) {for (int j = 0; j < 2; ++j)coords[i][j] = coordsTable[shape][i][j];}// 设定方块对象的形状pieceShape = shape;this.color = colorArr[shape];gridX = TetrixBoard.GRID_WIDTH / 2 + 1;gridY = TetrixBoard.GRID_HEIGHT - 1 + minY();x = TetrixBoard.CORRECT_X + gridX * SIZE;y = TetrixBoard.CORRECT_Y + (TetrixBoard.GRID_HEIGHT - 1 - gridY) * SIZE;}// 读取指定的小方块的x坐标public int x(int index) {return coords[index][0];}// 读取指定的小方块的y坐标public int y(int index) {return coords[index][1];}// 方块类的最小x坐标public int minX() {int min = coords[0][0];for (int i = 1; i < 4; ++i)min = Math.min(min, coords[i][0]);return min;}// 方块类的最大x坐标public int maxX() {int max = coords[0][0];for (int i = 1; i < 4; ++i)max = Math.max(max, coords[i][0]);return max;}// 方块类的最小y坐标public int minY() {int min = coords[0][1];for (int i = 1; i < 4; ++i)min = Math.min(min, coords[i][1]);return min;}// 方块类的最大y坐标public int maxY() {int max = coords[0][1];for (int i = 1; i < 4; ++i)max = Math.max(max, coords[i][1]);return max;}// 画出下一个方块public void drawNewPiece(Graphics g) {g.setColor(color);for(int i=0; i<4; i++) {Graphics2D g2 = (Graphics2D)g;g2.setStroke(new BasicStroke(3.0f));g2.drawRect(300 + x(i) * SIZE, 100 + y(i) * SIZE, SIZE-5, SIZE-5);g.fillRect(300 + x(i) * SIZE + 4, 100 + y(i) * SIZE + 4, SIZE - 12, SIZE - 12);}}// 画出当前方块public void draw(Graphics g) {g.setColor(color);for(int i=0; i<4; i++) {Graphics2D g2 = (Graphics2D)g;g2.setStroke(new BasicStroke(3.0f));g2.drawRect(x + x(i) * SIZE, y + y(i) * SIZE, SIZE-5, SIZE-5);g.fillRect(x + x(i) * SIZE + 4, y + y(i) * SIZE + 4, SIZE - 12, SIZE - 12);}}// 下落方法public void drop() {if(tryMove(gridX , gridY - 1) && !stoped) {y += SPEED;gridY -= 1;tb.dropHeight++;}}// 检测当前状态public void changeStatus() {if (!tryMove(gridX, gridY -1)) {stoped = true;if(tb.isStarted) pieceDropped();}}// 累积掉落块的次数并累计成绩public void pieceDropped(){//纪录已停止方块的位置信息for (int i = 0; i < 4; ++i) {int x = gridX + coords[i][0];int y = gridY - coords[i][1];tb.board[x + y * TetrixBoard.GRID_WIDTH] = pieceShape;}// 检测是否可以消行
        tb.removeFullLines();++tb.numPiecesDropped;if (tb.numPiecesDropped % 25 == 0) {++tb.level;}tb.score = tb.numPiecesDropped * 2 + tb.dropHeight;}// 方块类向左旋转90度public void rotate() {// 方块为田字形则直接返回TetrixPiece对象if (pieceShape == SquareShape || stoped)return ;// 假定可以选择并修改坐标for (int i = 0; i < 4; ++i) {int temp = coords[i][0];coords[i][0] = -coords[i][1];coords[i][1] = temp;}// 如果旋转测试失败则改回原来的坐标if(!tryMove(gridX, gridY)) {for (int i = 0; i < 4; ++i) {int temp = coords[i][0];coords[i][0] = coords[i][1];coords[i][1] = -temp;}}}// 向左移动public void moveLeft() {if(tryMove(gridX - 1, gridY) && !stoped) {x -= SIZE;gridX -= 1;}}// 向右移动public void moveRight() {if(tryMove(gridX + 1, gridY) && !stoped) {x += SIZE;gridX += 1;}}public boolean tryMove(int newX, int newY) {for (int i = 0; i < 4; ++i) {int x = newX + x(i);int y = newY - y(i);if (x < 0|| x >= TetrixBoard.GRID_WIDTH || y < 0 || y >= TetrixBoard.GRID_HEIGHT )return false;if (tb.board[x + y * 10] != NoShape)return false;}return true;}// 按键事件public void keyPressed(KeyEvent e) {int key = e.getKeyCode();if(key == KeyEvent.VK_Q){//退出当前的Java进程System.exit(0);}//如果暂停并且按键是[C]就继续动作if(tb.isPaused){if(key==KeyEvent.VK_C)    tb.isPaused = false;return;}switch(key) {case KeyEvent.VK_LEFT:moveLeft();tb.repaint();break;case KeyEvent.VK_RIGHT:moveRight();tb.repaint();break;case KeyEvent.VK_SPACE:rotate();tb.repaint();break;case KeyEvent.VK_DOWN:speedup = true;tb.repaint();break;case KeyEvent.VK_P:tb.isPaused = true;                }}// 按键事件public void keyReleased(KeyEvent e) {if(e.getKeyCode() == KeyEvent.VK_DOWN) {speedup = false;}}
}

package tetris;
import java.awt.*;
import java.awt.event.*;import java.awt.Font;public class TetrixBoard extends Frame {// 声明变量，窗口位置int x = 100;int y = 100;// 方块运动窗口为15x20格，以数组纪录其被窗口填充状况public int board[] = new int [220];// 下落次数public int dropHeight = 0;public int numPiecesDropped = 0;// 移除的行数public int numLinesRemoved = 0;// 开始游戏public boolean isStarted = true;// 暂停public boolean isPaused = false;// 总成绩public int score = 0;// 当前等级public int level = 0;// 程序窗口大小public static final int WIDTH = 400;public static final int HEIGHT = 500;// 游戏区域起始坐标public static final int CORRECT_X = 20;public static final int CORRECT_Y = 30;//游戏区域大小public static final int RECT_WIDTH = 200;public static final int RECT_HEIGHT = 440;//游戏区域网格大小public static final int GRID_WIDTH = 10;public static final int GRID_HEIGHT = 22;//双缓冲刷新用到的变量Image offScreenImage = null;// 声明一个TetrixPiece对象TetrixPiece newPiece = null;TetrixPiece curPiece = null;    // 设定文本字体Font mf = new Font("TimesRoman", Font.ITALIC, 18);public void launcher() {// 出现位置this.setLocation(x,y);// 大小this.setSize(WIDTH, HEIGHT);// 启动线程前先生成一个TetrixPiece实例curPiece = new TetrixPiece(this);newPiece = new TetrixPiece(this);//启动刷新线程new Thread(new paintThread()).start();// 可见性this.setVisible(true);// 窗口标题this.setTitle("Tetris Game");// 不可调整this.setResizable(false);// 布局管理this.setLayout(null);// 背景颜色this.setBackground(new Color(240,255,240));// 添加窗口监听器this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {System.exit(0);}});// 清空窗格this.clearBoard();// 添加按键事件监控this.addKeyListener(new keyMonitor());}// 屏幕双缓冲避免屏闪public void update(Graphics g) {// 在内存中开辟一个与当前窗口大小一致的空间if(offScreenImage == null) {offScreenImage = this.createImage(WIDTH, HEIGHT);}//建立Graphics对象，把要绘制的对象存放在分配好的内存空间Graphics gOffScreen = offScreenImage.getGraphics();Color c = gOffScreen.getColor();//设定内存对象背景颜色gOffScreen.setColor(new Color(240,255,240));gOffScreen.fillRect(0, 0, WIDTH, HEIGHT);gOffScreen.setColor(c);//绘制窗口到内存对象中
        paint(gOffScreen);//将内存对象一次性绘制到当前窗口，消除屏闪g.drawImage(offScreenImage, 0, 0, null);}// 画出一个指定颜色和位置的小方块public void drawSquare(Graphics g, int x, int y, int Shape) {g.setColor(TetrixPiece.colorArr[Shape]);Graphics2D g2 = (Graphics2D)g;g2.setStroke(new BasicStroke(3.0f));g2.drawRect(x, y , TetrixPiece.SIZE-5, TetrixPiece.SIZE-5);g.fillRect(x + 4, y  + 4, TetrixPiece.SIZE - 12, TetrixPiece.SIZE - 12);}@Overridepublic void paint(Graphics g) {Color c = g.getColor();// 设定红色画笔画框
        g.setColor(Color.MAGENTA);g.drawRect(CORRECT_X - 2 , CORRECT_Y, RECT_WIDTH, RECT_HEIGHT);// 设定文本颜色g.setColor(new Color(70,130,180));g.setFont(mf);g.drawString("Score : "+score, 260,200);g.drawString("Level : "+level, 260,240);g.drawString("Pause :  'p'", 260, 280);g.drawString("Continue :  'c'", 260, 320);g.drawString("Quit :  'q'", 260, 360);// 重新设回原来的颜色
        g.setColor(c);curPiece.draw(g);//curPiece.changeStatus();
        newPiece.drawNewPiece(g);// 因定时器产生的重绘向下走一格，若只是旋转不应下降故此处移除//if(!curPiece.stoped)//    curPiece.drop();// 重画已下落的方块for (int i = 0; i < GRID_HEIGHT; ++i) {for (int j = 0; j < GRID_WIDTH; ++j) {int shape = board[j + (GRID_HEIGHT - i - 1) * GRID_WIDTH];if (shape != TetrixPiece.NoShape) drawSquare(g, CORRECT_X + j * TetrixPiece.SIZE,CORRECT_Y + i * TetrixPiece.SIZE, shape);}}// 为防止消行时最后下落块没有及时重绘，此句放到最后
        curPiece.changeStatus();}// 刷新类private class paintThread implements Runnable {@Overridepublic void run() {while(true) {repaint();if(!curPiece.stoped && !isPaused)     curPiece.drop();//触底后再生成一个Shape实例if(curPiece.stoped && isStarted && !isPaused) {curPiece = newPiece;// 如果当前Shape实例不能移动则停止游戏if(!curPiece.tryMove(curPiece.gridX, curPiece.gridY))isStarted = false;newPiece = new TetrixPiece(TetrixBoard.this);}try{//向下键是否被按下if(!curPiece.speedup) {Thread.sleep(1000/(level + 1));} elseThread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}}}}// 按键事件内部类private class keyMonitor extends KeyAdapter {@Overridepublic void keyPressed(KeyEvent e) {curPiece.keyPressed(e);}@Overridepublic void keyReleased(KeyEvent e) {curPiece.keyReleased(e);}}// 窗格清空public void clearBoard(){for (int i = 0; i < 220; ++i)board[i] = TetrixPiece.NoShape;}// 检测是否可以消行public void removeFullLines(){int numFullLines = 0;// 是否可以消行for (int i = GRID_HEIGHT - 1; i >= 0; --i) {boolean lineIsFull = true;for (int j = 0; j < GRID_WIDTH; ++j) {if (board[j + i * GRID_WIDTH] == TetrixPiece.NoShape) {lineIsFull = false;break;}}// 可以消行则更新方块位置纪录数组if (lineIsFull) {++numFullLines;for (int k = i; k < GRID_HEIGHT - 1; ++k) {for (int j = 0; j < GRID_WIDTH; ++j)board[j + k * GRID_WIDTH] = board[j + (k + 1) * GRID_WIDTH];}for (int j = 0; j < GRID_WIDTH; ++j)board[j + (GRID_HEIGHT - 1) * GRID_WIDTH] = TetrixPiece.NoShape;}}// 消行后更新成绩if (numFullLines > 0) {numLinesRemoved += numFullLines;score += 10 * numFullLines;//isWaitingAfterLine = true;
            curPiece.setShape(TetrixPiece.NoShape);}}public static void main(String[] args) {new TetrixBoard().launcher();}
}