java实现俄罗斯方块

package demo1; import javax.imageio.ImageIO; import javax.swing.*; import java.awt.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; //编写俄罗斯方块主类 public class Tetris extends JPanel { //声明正在下落的方块 private Tetromino currentOne = Tetromino.randomOne(); //声明将要下落的方块 private Tetromino nextOne = Tetromino.randomOne(); //声明游戏主区域 private Cell[][] wall = new Cell[18][9]; //声明单元格的值为48像素 private static final int CELL_SIZE = 48; //声明游戏分数池 int[] scores_pool = {0,1,2,5,10}; //声明当前获得游戏的分数 private int totalScore = 0; //当前已消除的行数 private int totalLine = 0; //声明游戏的三种状态，分别是：游戏中、暂停、游戏结束 public static final int PLAYING = 0; public static final int PAUSE = 1; public static final int GAMEOVER = 2; //声明变量存放当前游戏状态的值 private int game_state; //声明一个数组，用来显示游戏状态 String[] show_state = {"P[pause]","C[continue]","S[replay]"}; //载入方块图片 public static BufferedImage I; public static BufferedImage J; public static BufferedImage L; public static BufferedImage O; public static BufferedImage S; public static BufferedImage T; public static BufferedImage Z; public static BufferedImage backImage; static { try { I = ImageIO.read(new File("images/I.png")); J = ImageIO.read(new File("images/J.png")); L = ImageIO.read(new File("images/L.png")); O = ImageIO.read(new File("images/O.png")); S = ImageIO.read(new File("images/S.png")); T = ImageIO.read(new File("images/T.png")); Z = ImageIO.read(new File("images/Z.png")); backImage = ImageIO.read(new File("images/background.png")); } catch (IOException e) { e.printStackTrace(); } } @Override public void paint(Graphics g) { g.drawImage(backImage, 0, 0, null); //平移坐标轴 g.translate(22, 15); //绘制游戏主区域 paintWall(g); //绘制正在下落的四方格 paintCurrentOne(g); //绘制下一个将要下落的四方格 paintNextOne(g); //绘制游戏得分 paintScore(g); //绘制游戏当前状态 paintState(g); } public void start(){ game_state = PLAYING; KeyListener l = new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { int code = e.getKeyCode(); switch (code){ case KeyEvent.VK_DOWN: sortDropAction(); //下落一格 break; case KeyEvent.VK_LEFT: moveLeftAction(); //左移 break; case KeyEvent.VK_RIGHT: moveRightAction(); //右移 break; case KeyEvent.VK_UP: rotateRightAction(); //顺时针旋转 break; case KeyEvent.VK_SPACE: handDropAction(); //瞬间下落 break; case KeyEvent.VK_P: //判断当前游戏的状态 if(game_state == PLAYING){ game_state = PAUSE; } break; case KeyEvent.VK_C: //判断游戏状态 if(game_state == PAUSE){ game_state = PLAYING; } break; case KeyEvent.VK_S: //表示游戏重新开始 game_state = PLAYING; wall = new Cell[18][9]; currentOne = Tetromino.randomOne(); nextOne = Tetromino.randomOne(); totalScore = 0; totalLine = 0; break; } } }; //将俄罗斯方块窗口设置为焦点 this.addKeyListener(l); this.requestFocus(); while(true){ //判断，当前游戏状态在游戏中时，每隔0.5秒下落 if(game_state == PLAYING){ try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } //判断能否下落 if(canDrop()){ currentOne.softDrop(); }else{ //嵌入到墙中 landToWall(); //判断能否消行 destroyLine(); //判断游戏是否结束 if(isGameOver()){ game_state = GAMEOVER; }else{ currentOne = nextOne; nextOne = Tetromino.randomOne(); } } } repaint(); } } //创建顺时针旋转 public void rotateRightAction(){ currentOne.rotateRight(); //判断是否越界或者是否重合 if(outOfBounds() || coincide()){ currentOne.rotateLeft(); } } //瞬间下落 public void handDropAction(){ while(true){ //判断四方格能否下落 if(canDrop()){ currentOne.softDrop(); }else{ break; } } //嵌入到墙中 landToWall(); //判断能否消行 destroyLine(); //判断游戏是否结束 if(isGameOver()){ game_state = GAMEOVER; }else{ //游戏没有结束，继续生成新的四方格 currentOne = nextOne; nextOne = Tetromino.randomOne(); } } //按键一次四方格下落一格 public void sortDropAction(){ //判断能否下落 if(canDrop()){ //当前四方格下落一格 currentOne.softDrop(); }else{ //将四方格嵌入到墙中 landToWall(); //判断能否消行 destroyLine(); //判断游戏是否结束 if(isGameOver()){ game_state = GAMEOVER; }else{ //当游戏没有结束时，则继续生成新的四方格 currentOne = nextOne; nextOne = Tetromino.randomOne(); } } } //四方格嵌入到墙中 private void landToWall() { Cell[] cells = currentOne.cells; for (Cell cell : cells) { int row = cell.getRow(); int col = cell.getCol(); wall[row][col] = cell; } } //判断四方格能否下落 public boolean canDrop(){ Cell[] cells = currentOne.cells; for (Cell cell : cells) { int row = cell.getRow(); int col = cell.getCol(); //判断是否到达底部 if(row == wall.length - 1){ return false; }else if(wall[row + 1][col] != null){ //判断是否有方块 return false; }