J2ME的RPG游戏Demo

import javax.microedition.lcdui.*; /** * RPG游戏示例代码 实现了按键的连续移动 */ public class RPGCanvas extends Canvas implements Runnable { /** 游戏状态 */ private int status; // 游戏状态设定 /** 村庄1 */ private final static int SCREEN_1 = 0; /** 武器店 */ private final static int WEAPON_SHOP = 10; /** 对话状态1 */ private final static int DIALOAG_1 = 100; // 场景1地图数组 int backmap0[][] = { { 1, 11, 12, 1, 76, 1, 1, 1, 78, 1, 1, 1 }, { 19, 20, 21, 22, 73, 80, 81, 1, 77, 68, 1, 1 }, { 28, 29, 30, 31, 32, 1, 1, 1, 1, 1, 1, 1 }, { 37, 38, 39, 31, 41, 1, 1, 1, 1, 1, 54, 1 }, { 46, 47, 48, 49, 50, 1, 1, 1, 1, 1, 1, 1 }, { 55, 74, 57, 58, 59, 1, 1, 1, 1, 1, 1, 1 }, { 79, 75, 66, 67, 1, 1, 1, 3, 4, 5, 1, 1 }, { 1, 1, 1, 1, 1, 1, 1, 2, 13, 14, 1, 1 }, { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, { 54, 27, 24, 24, 23, 83, 24, 24, 24, 24, 26, 54 }, { 15, 43, 9, 9, 23, 83, 9, 9, 9, 9, 25, 15 }, { 54, 42, 33, 33, 23, 83, 33, 33, 33, 33, 34, 54 }, { 1, 1, 1, 1, 84, 84, 1, 1, 1, 1, 1, 1 } }; // 图块常量 /** 每个图块的宽度 */ private final static int TILE_WIDTH = 16; /** 每个图块的高度 */ private final static int TILE_HEIGHT = 16; /** 场景1图片 */ Image screen_1 = null; /** 地图原始图片 */ Image map0Img = null; /** 人物原始图片 */ Image roleImg = null; /** 人物的x坐标 */ int roleX = 100; /** 任务的y坐标 */ int roleY = 100; /** 人物宽度 */ private final static int ROLE_WIDTH = 16; /** 人物高度 */ private final static int ROLE_HEIGHT = 32; /** 人物方向 */ int direction; /** 人物当前显示图片的序号 */ int currIndex = 0; /** 人物连续移动的控制变量，-1代表不移动，其他方向和人物方向常量的规定相同 */ int roleMoveControl = -1; /** 移动速度，每次2个像素 */ int speed = 4; /** 不移动 */ private final static int NOT_MOVE = -1; /** 人物方向常量 */ private final static int DIRE_LEFT = 9; private final static int DIRE_RIGHT = 6; private final static int DIRE_UP = 3; private final static int DIRE_DOWN = 0; /** 屏幕宽度 */ int width; /** 屏幕高度 */ int height; /** 可行走区域地图块序号 */ private int[] canMoveTile = { 1, 2, 3, 4, 5, 13, 14, 23, 32, 41, 50, 59, 66, 67, 83 }; /**武器名称*/ private String[] weaponName = { "轩辕剑", "浪宇刀", "匕首" }; /**武器价格*/ private int[] weaponPrice = { 1000, 2000, 100 }; public RPGCanvas() { try { map0Img = Image.createImage("/map.png"); roleImg = Image.createImage("/player.png"); } catch (Exception e) { } //全屏 this.setFullScreenMode(true); width = this.getWidth(); height = this.getHeight(); // 启动线程 Thread th = new Thread(this); th.start(); } protected void paint(Graphics g) { // 根据游戏状态实现绘制 switch (status) { case SCREEN_1: // 绘制场景 paintSCREEN_1(g); // 绘制人物 paintRole(g); break; case WEAPON_SHOP: paintWEAPON_SHOP(g); break; case DIALOAG_1: paintDIALOAG_1(g); break; } } /** * 绘制场景1的方法 * * @param g * 画笔 */ private void paintSCREEN_1(Graphics g) { // 构造地图图片 if (screen_1 == null) { screen_1 = createScreen_1(); } g.drawImage(screen_1, 0, 0, Graphics.LEFT | Graphics.TOP); } /** * 绘制人物 * * @param g * 画笔 */ private void paintRole(Graphics g) { g.setClip(roleX, roleY, ROLE_WIDTH, ROLE_HEIGHT); g.drawImage(roleImg, roleX - currIndex * ROLE_WIDTH, roleY, Graphics.LEFT | Graphics.TOP); // 恢复默认剪切区域 g.setClip(0, 0, width, height); } String weaponShopName = "武器店"; String left = "离开"; /** * 绘制武器店界面 * * @param g * 画笔 */ private void paintWEAPON_SHOP(Graphics g) { //绘制背景 g.setColor(0); g.fillRect(0, 0, width, height); g.setColor(0xffffff); //绘制标题 g.drawString(weaponShopName,90,10,Graphics.TOP | Graphics.LEFT); //循环绘制 for(int i = 0; i < weaponName.length;i++){ //绘制武器名称 g.drawString(weaponName[i], 30, 50 + 30 * i, Graphics.TOP | Graphics.LEFT); //绘制武器价格 g.drawString("" + weaponPrice[i], 150, 50 + 30 * i, Graphics.TOP | Graphics.LEFT); } //绘制按钮 g.drawString(left, 0, height, Graphics.BOTTOM | Graphics.LEFT); } /** * 绘制对话 * * @param g * 画笔 */ private void paintDIALOAG_1(Graphics g) { } private Image createScreen_1() { // 创建和地图大小一样的图片 Image tempImg = Image.createImage(backmap0[0].length * TILE_WIDTH, backmap0.length * TILE_HEIGHT); // 绘制地图 Graphics g1 = tempImg.getGraphics(); // 循环绘制 for (int i = 0; i < backmap0.length; i++) { // 行 for (int j = 0; j < backmap0[i].length; j++) { // 设置剪切区域 g1.setClip(j * TILE_WIDTH, i * TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT); // 计算图片坐标 int dx = (backmap0[i][j] - 1) % 9 * TILE_WIDTH; int dy = (backmap0[i][j] - 1) / 9 * TILE_HEIGHT; // 绘制图片 g1.drawImage(map0Img, j * TILE_WIDTH - dx, i * TILE_HEIGHT - dy, Graphics.LEFT | Graphics.TOP); } } return tempImg; } public void keyPressed(int keyCode) { //System.out.println(keyCode); // 根据游戏状态实现按键处理 switch (status) { case SCREEN_1: SCREEN_1_KeyPress(keyCode); break; case WEAPON_SHOP: weapon_Shop_KeyPress(keyCode); break; case DIALOAG_1: break; } } /** * 武器店事件处理 * @param keyCode */ private void weapon_Shop_KeyPress(int keyCode){ if(keyCode == -6){ //左软键 status = SCREEN_1; //切换到村庄 //处理坐标 roleX = 38; roleY = 100; //人物方向 direction = DIRE_DOWN; //人物静止 roleMoveControl = NOT_MOVE; } } public void keyReleased(int keyCode) { // 根据游戏状态实现按键处理 switch (status) { case SCREEN_1: SCREEN_1_KeyRelease(keyCode); break; case WEAPON_SHOP: break; case DIALOAG_1: break; } } private void SCREEN_1_KeyPress(int keyCode) { // 转换为游戏动作 int action = this.getGameAction(keyCode); switch (action) { case UP: // 改变方向 direction = DIRE_UP; // 控制移动 roleMoveControl = DIRE_UP; break; case DOWN: // 改变方向 direction = DIRE_DOWN; // 控制移动 roleMoveControl = DIRE_DOWN; break; case LEFT: // 改变方向 direction = DIRE_LEFT; // 控制移动 roleMoveControl = DIRE_LEFT; break; case RIGHT: // 改变方向 direction = DIRE_RIGHT; // 控制移动 roleMoveControl = DIRE_RIGHT; break; case FIRE: break; } } private void SCREEN_1_KeyRelease(int keyCode) { // 转换为游戏动作 int action = this.getGameAction(keyCode); switch (action) { case UP: case DOWN: case LEFT: case RIGHT: roleMoveControl = NOT_MOVE; } } Runtime rt = Runtime.getRuntime(); public void run() { try { while (true) { // 延时 Thread.sleep(100); // 逻辑处理方法 tick(); //判断 if(rt.freeMemory() < 100000){ System.gc(); } // 重新绘制 repaint(); } } catch (Exception e) { } } /** * 逻辑处理方法 */ public void tick() { // 根据游戏状态实现绘制 switch (status) { case SCREEN_1: roleMove(); break; case WEAPON_SHOP: break; case DIALOAG_1: break; } } /** * 人物移动处理方法 */ private void roleMove() { if (roleMoveControl != NOT_MOVE) { // 人物移动 //是否进入武器店 if(isDisplayWeaponShop()){ status = WEAPON_SHOP; } // 根据方向移动 switch (direction) { case DIRE_LEFT: // 向左移动 // 左边界检测 if (roleX - speed >= 0) { roleX -= speed; // 如果发生碰撞，则退回 if (collis()) { roleX += speed; }