j2me手机程序eclipse开发基础源代码

/* * 创建日期 2005-6-29 * * TODO 要更改此生成的文件的模板，请转至 * 窗口 － 首选项 － Java － 代码样式 － 代码模板 */ package game; import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Font; import javax.microedition.lcdui.Graphics; import javax.microedition.lcdui.Image; import javax.microedition.midlet.MIDletStateChangeException; /** * @author Administrator * * TODO 要更改此生成的类型注释的模板，请转至 * 窗口 － 首选项 － Java － 代码样式 － 代码模板 */ public class GameScreen extends Canvas implements CommandListener { private static final int BLACK = 0x00000000; private static final int WHITE = 0x00FFFFFF; private static final int RED = 0x00FF0000; private static final int BLUE = 0x000000FF; private final HuaRongRoadMIDlet midlet; private final Command exitCommand; private final Command newGameCommand; private int screenWidth, screenHeight; private int boardCellSize, boardSize, boardTop, boardLeft; private Image caocao; private Image guanyu; private Image huangzhong; private Image kongbai; private Image machao; private Image zhangfei; private Image zhaoyun; private Image zu; private boolean isRestart; private int preCursorPosition, cursorPosition; private int fireStep = 0; private int from = -1; private int wOld, hOld; private boolean isGameOver = false; private int[] ID = { 1, 2, 2, 3, // 地图 1, 2, 2, 3, // 1:张飞 2:曹操 3:马超 4, 5, 5, 6, // 4:赵云 5:关羽 6:黄忠 4, 7, 7, 6, // 7:卒 0:空白 7, 0, 0, 7}; private int[] Draw = { 1, 1, 0, 1, // 是否进行绘制处理 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1}; private Image[] Pic = {kongbai, zhangfei, caocao, machao, zhaoyun, guanyu, huangzhong, zu}; /** * */ public GameScreen(HuaRongRoadMIDlet midlet) { this.midlet = midlet; // 获取屏幕大小 screenWidth = getWidth(); screenHeight = getHeight(); boardCellSize = (screenHeight - 6) / 5; boardLeft = (screenWidth - boardCellSize * 4) / 2; boardTop = 1; // 添加屏幕命令 exitCommand = new Command("退出", Command.EXIT, 1); newGameCommand = new Command("开始", Command.SCREEN, 2); addCommand(exitCommand); addCommand(newGameCommand); // 侦听命令按键 setCommandListener(this); // 初始化屏幕显示 initialize(); } private void initialize() { // 先前行棋位置和当前行棋位置复位 preCursorPosition = cursorPosition = 0; // 装载所有位图片段 try { // 装载图象片段 caocao = Image.createImage("/caocao.png"); guanyu = Image.createImage("/guanyu.png"); huangzhong = Image.createImage("/huangzhong.png"); kongbai = Image.createImage("/kongbai.png"); machao = Image.createImage("/machao.png"); zhangfei = Image.createImage("/zhangfei.png"); zhaoyun = Image.createImage("/zhaoyun.png"); zu = Image.createImage("/zu.png"); // 将图片保存到数组 Pic[0] = kongbai; Pic[1] = zhangfei; Pic[2] = caocao; Pic[3] = machao; Pic[4] = zhaoyun; Pic[5] = guanyu; Pic[6] = huangzhong; Pic[7] = zu; } catch (Exception e) {} // 地图 ID[0] = 1; ID[1] = 2; ID[2] = 2; ID[3] = 3; ID[4] = 1; ID[5] = 2; ID[6] = 2; ID[7] = 3; ID[8] = 4; ID[9] = 5; ID[10] = 5; ID[11] = 6; ID[12] = 4; ID[13] = 7; ID[14] = 7; ID[15] = 6; ID[16] = 7; ID[17] = 0; ID[18] = 0; ID[19] = 7; // 是否进行绘制处理 Draw[0] = 1; Draw[1] = 1; Draw[2] = 0; Draw[3] = 1; Draw[4] = 0; Draw[5] = 0; Draw[6] = 0; Draw[7] = 0; Draw[8] = 1; Draw[9] = 1; Draw[10] = 0; Draw[11] = 1; Draw[12] = 0; Draw[13] = 1; Draw[14] = 1; Draw[15] = 0; Draw[16] = 1; Draw[17] = 1; Draw[18] = 1; Draw[19] = 1; // 重绘屏幕 isRestart = true; isGameOver = false; repaint(); } public void paint(Graphics g) { if (isGameOver == false){ // 是否重绘 if (isRestart) { // 以白色清空画布 g.setColor(WHITE); g.fillRect(0, 0, screenWidth, screenHeight); // 绘制网格 // 白色清空画布 g.setColor(WHITE); g.fillRect(0, 0, screenWidth, screenHeight); // 黑色绘制网格 g.setColor(BLACK); // 6横 for (int i = 0; i < 6; i++) g.drawLine(boardLeft, boardCellSize * i + boardTop, boardLeft + (boardCellSize * 4), boardCellSize * i + boardTop); // 5竖 for (int i = 0; i < 5; i++) g.drawLine(boardCellSize * i + boardLeft, boardTop, boardCellSize * i + boardLeft, boardTop + boardCellSize * 5); // 边框 g.drawRect(boardLeft - 1, boardTop - 1, boardCellSize * 4 + 2, boardCellSize * 5 + 2); for (int i = 0; i < 20; i++) { // 在当前位置进行绘制处理 if (Draw[i] == 1) { int x = (i % 4) * boardCellSize + 1 + boardLeft; int y = ((int)(i / 4)) * boardCellSize + boardTop + 1; g.drawImage(Pic[ID[i]], x, y, 0); } } isRestart = false; } // 绘制光标 drawCursor(g); } else paintGameOver(g); } private void paintGameOver(Graphics g){ // 状态信息 String statusMsg = " 游戏结束！"; String tallyMsg = "曹操成功逃脱！"; // 设置字体 Font font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM); int strHeight = font.getHeight(); int statusMsgWidth = font.stringWidth(statusMsg); int tallyMsgWidth = font.stringWidth(tallyMsg); int strWidth = tallyMsgWidth; if (statusMsgWidth > tallyMsgWidth) strWidth = statusMsgWidth; // 计算字符绘制位置 int x = (screenWidth - strWidth) / 2; x = x < 0 ? 0 : x; int y = (screenHeight - 2 * strHeight) / 2; y = y < 0 ? 0 : y; // 白色清空画布 g.setColor(WHITE); g.fillRect(0, 0, screenWidth, screenHeight); // 黑色显示信息 g.setColor(BLACK); g.drawString(statusMsg, x, y, (Graphics.TOP | Graphics.LEFT)); g.drawString(tallyMsg, x, (y + 1 + strHeight), (Graphics.TOP | Graphics.LEFT)); } /* （非 Javadoc） * @see javax.microedition.lcdui.CommandListener#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable) */ public void commandAction(Command arg0, Displayable arg1) { if (arg0 == exitCommand) { try { // 退出 midlet.quit(); } catch (MIDletStateChangeException e) { // TODO 自动生成 catch 块 e.printStackTrace(); } } else if (arg0 == newGameCommand) { // 开始游戏 initialize(); } } protected void keyPressed(int keyCode) { // 游戏结束，不响应按键 if (ID[13] == 2 && ID[14] == 2 && ID[17] == 2 && ID[18] == 2) return; // 得到按键动作 int gameAction = getGameAction(keyCode); switch (gameAction) { case FIRE: // 选定 fireStep = fireStep + 1; if (fireStep == 1){ from = cursorPosition; preCursorPosition = from; } // 重绘 repaint(); break; case RIGHT: // 右移 doMoveCursor(1, 0); break; case DOWN: // 下移 doMoveCursor(0, 1); break; case LEFT: // 左移 doMoveCursor(-1, 0); break; case UP: // 上移 doMoveCursor(0, -1); break; default: break; } } private void doMoveCursor(int dx, int dy) { // 计算新位置 int newCursorPosition = cursorPosition + dx + 4 * dy; // 检验当前位置是否为图片的主索引位置 if (Draw[newCursorPosition] == 0){ // 当前进行的是右移操作 if (dx > 0){ // 新位置是否位于第一列 if (newCursorPosition % 4 > 0){ // 新移动到的位置是否与原位置同属一个图片 if (ID[newCursorPosition] == ID[cursorPosition]){ // 继续右移，使新位置落于其他图片 newCursorPosition = newCursorPosition + 1; // 检验新点是否合法 if (newCursorPosition < 20){ // 进一步检测新位置是否落在其他图片的主索引位置，如不在则调整之 if (Dra