详细解读Java俄罗斯方块变色版本2游戏的源代码-课程设计

import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.*; import javax.swing.Timer; //2012-7-20 //21:00 //xmj // 创建一个俄罗斯方块类 class Tetrisblok extends JPanel implements KeyListener { private int blockType;// blockType 代表方块类型 private int turnState;// turnState代表方块状态 private int score = 0; private int x,y; //当前方块位置 private int nextblockType=-1,nextturnState=-1; //下一方块类型和状态 private Timer timer;//定时器 // 存储已经放下的方块（1）及围墙（2） int[][] map = new int[12][21]; // 方块的形状 //第一组代表方块类型有Z、L、J、I、 田、T 6种 //第二组第三四组为旋转几次后的方块矩阵 private final int shapes[][][] = new int[][][] { // 长条形I形 { { 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0 }, { 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0 } }, // 倒z字形 { { 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 }, { 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 } }, // z字形 { { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 } }, // J字形 { { 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0 }, { 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, // 田字形 { { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, // L字形 { { 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0 }, { 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 }, { 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, // ⊥字形 { { 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 }, { 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0 } } }; // 生成新方块的方法 public void newblock() { //没有下一方块 if(nextblockType==-1 && nextturnState==-1){ blockType = (int) (Math.random() * 1000) % 7; turnState = (int) (Math.random() * 1000) % 4; nextblockType=(int) (Math.random() * 1000) % 7; nextturnState=(int) (Math.random() * 1000) % 4; } else{//已有下一方块 blockType = nextblockType; turnState = nextturnState; nextblockType=(int) (Math.random() * 1000) % 7; nextturnState=(int) (Math.random() * 1000) % 4; } x = 4; y = 0;//屏幕上方中央 if (gameover(x, y) == 1) {//游戏结束 newmap(); drawwall(); score = 0; JOptionPane.showMessageDialog(null, "GAME OVER"); } } // 画围墙 public void drawwall() { int i ,j; for (i = 0; i < 12; i++) { map[i][20] = 2; } for (j = 0; j < 21; j++) { map[11][j] = 2; map[0][j] = 2; } } // 初始化地图 public void newmap() { int i ,j; for (i = 0; i < 12; i++) { for (j = 0; j < 21; j++) { map[i][j] = 0; } } } // 初始化构造方法 Tetrisblok() { newblock(); newmap(); drawwall(); timer = new Timer(500, new TimerListener());//0.5秒 timer.start(); } // 定时器监听 class TimerListener implements ActionListener { public void actionPerformed(ActionEvent e) { if (blow(x, y + 1, blockType, turnState) == 1) {//可以下落 y = y + 1; //当前方块下移 delline(); } if (blow(x, y + 1, blockType, turnState) == 0) {//不可以下落 add(x, y, blockType, turnState); delline(); newblock(); } repaint();//屏幕重画 } } public void newGame()//新游戏 { newblock(); newmap(); drawwall(); } public void pauseGame()//暂停游戏 { timer.stop(); } public void continueGame()//继续游戏 { timer.start(); } // 旋转当前方块的方法 public void turn() { int tempturnState = turnState; turnState = (turnState + 1) % 4; if (blow(x, y, blockType, turnState) == 1) {//可以旋转 } if (blow(x, y, blockType, turnState) == 0) {//不可以旋转 turnState = tempturnState;// 将旋转次数恢复为原来的值 } repaint(); } // 左移的方法 public void left() { if (blow(x - 1, y, blockType, turnState) == 1) { x = x - 1; } ; repaint(); } // 右移的方法 public void right() { if (blow(x + 1, y, blockType, turnState) == 1) { x = x + 1; } ; repaint(); } // 下落的方法 public void down() { if (blow(x, y + 1, blockType, turnState) == 1) { y = y + 1; delline(); } if (blow(x, y + 1, blockType, turnState) == 0) { add(x, y, blockType, turnState); newblock(); delline(); } repaint(); } // 是否合法的方法 public int blow(int x, int y, int blockType, int turnState) { for (int a = 0; a < 4; a++) { for (int b = 0; b < 4; b++) { if (((shapes[blockType][turnState][a * 4 + b] == 1) && (map[x + b + 1][y + a] == 1)) || ((shapes[blockType][turnState][a * 4 + b] == 1) && (map[x + b + 1][y + a] == 2))) { return 0; } } } return 1; } // 消行的方法 public void delline() { int c = 0; for (int b = 0; b < 21; b++) { for (int a = 0; a < 12; a++) { if (map[a][b] == 1) { c = c + 1; if (c == 10) {//该行满行 score += 10; for (int d = b; d > 0; d--) { for (int e = 0; e < 12; e++) {//则上方方块下移 map[e][d] = map[e][d - 1]; } } } } } c = 0; } } // 判断游戏结束方法 public int gameover(int x, int y) { if (blow(x, y, blockType, turnState) == 0) { return 1; } return 0; } // 把当前方块添加map public void add(int x, int y, int blockType, int turnState) { int j = 0; for (int a = 0; a < 4; a++) { for (int b = 0; b < 4; b++) { if (shapes[blockType][turnState][j] == 1) { map[x + b + 1][y + a] = shapes[blockType][turnState][j]; } j++; } } } int yanse = (int)(Math.random()*10); //paint(Graphics g)是屏幕重画的方法。 public void paint(Graphics g) { super.paint(g);//调用父类的paint()方法，实现初始化清屏 if(yanse>8) g.setColor(Color.BLUE); else if (yanse>6) g.setColor(Color.green); else if (yanse>4) g.setColor(Color.magenta); else if (yanse>2) g.setColor(Color.CYAN); else if (yanse>0) g.setColor(Color.pink); else g.setColor(Color.CYAN); int i ,j; // 画当前方块 for (j = 0; j < 16; j++) { if (shapes[blockType][turnState][j] == 1) { g.fillRect((j % 4 + x + 1) * 15, (j / 4 + y) * 15, 15, 15); } } // 画已经固定的方块和围墙 for (j = 0; j < 21; j++) { for (i = 0; i < 12; i++) { if (map[i][j] == 1) { //画已经固定的方块 g.fillRect(i * 15, j * 15, 15, 15); } if (map[i][j] == 2) {//画围墙 g.drawRect(i * 15, j * 15, 15, 15); } } } g.drawString("score=" + score, 225, 15); g.drawString("下一方块形状", 225, 50); int W=15; Image myImage = Toolkit.getDefaultToolkit().getImage("block0.gif"); //窗口右侧区域绘制下一方块 for (j = 0; j < 16; j++) { if (shapes[nextblockType][nextturnState][j] == 1) { g.fillRect(225+(j % 4 ) * 15, (j / 4 ) * 15+100, 15, 15); g.drawImage(myImage, 225+(j % 4 ) * 15, (j / 4 ) * 15+200, W, W,this); } } // int W=15; // Image myImage = Toolkit.getDefaultToolkit().g