3个RPG练习，最后一个是卡马克卷轴

import javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Graphics;import javax.microedition.lcdui.Image;import javax.microedition.lcdui.game.GameCanvas;import javax.microedition.lcdui.game.LayerManager;import javax.microedition.lcdui.game.Sprite;import javax.microedition.lcdui.game.TiledLayer;public class AppCanvas extends GameCanvas implements Runnable{private Graphics g;private Image roleImg,groundImg;private TiledLayer barrierLayer,groundLayer;private Sprite hero;private LayerManager layerManager;private int WORLD_WIDTH,WORLD_HEIGHT;//地图宽高private int[] view = new int[4];//可视窗口大小private static final int X = 0;private static final int Y = 1;private static final int WIDTH = 2;private static final int HEIGHT = 3;private static int STEP = 12;private int direction = -1;private int CELL_WIDTH=24,CELL_HEIGHT=35;protected AppCanvas() {super(true);// TODO Auto-generated constructor stubsetFullScreenMode(true);g=this.getGraphics();roleImg=Tools.getImage("/hero.png");groundImg=Tools.getImage("/map.png");layerManager=new LayerManager();hero = new Sprite(roleImg, 24, 29);barrierLayer = new TiledLayer(12, 12, groundImg, CELL_WIDTH, CELL_HEIGHT);groundLayer = new TiledLayer(12, 12, groundImg, CELL_WIDTH, CELL_HEIGHT);hero.defineCollisionRectangle(4,4,hero.getWidth()-8,hero.getHeight()-8);hero.setPosition(CELL_WIDTH*2, CELL_HEIGHT*6);Tools.fillCells(groundLayer, Consts.groundLayer_cells);Tools.fillCells(barrierLayer, Consts.barrierLayer_cells);//获得地图大小WORLD_WIDTH=groundLayer.getWidth();WORLD_HEIGHT=groundLayer.getHeight();//添加到图层layerManager.append(hero);layerManager.append(barrierLayer);layerManager.append(groundLayer);view[X] = 0;view[Y] = 0;view[WIDTH] = 240;//getWidth();//240view[HEIGHT] = 320;//getHeight();//320layerManager.setViewWindow(view[X], view[Y], view[WIDTH], view[HEIGHT]);new Thread(this).start();}public void run() {// TODO Auto-generated method stubwhile (true){long start=System.currentTimeMillis();input();draw(g);long end=System.currentTimeMillis();if(end-start<100){try {Thread.sleep(100-(end-start));} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}public void draw(Graphics g){layerManager.paint(g, 0, 0);this.flushGraphics();}public void input() {int keyState=getKeyStates();if ((keyState & DOWN_PRESSED) != 0) {if (direction != DOWN_PRESSED) {direction = DOWN_PRESSED;hero.setFrameSequence(new int[] { 6, 7, 8 });} else {hero.nextFrame();}if (hero.getY() + hero.getHeight() < WORLD_HEIGHT)hero.move(0, STEP);elsehero.setPosition(hero.getX(), WORLD_HEIGHT - hero.getHeight());} else if ((keyState & UP_PRESSED) != 0) {if (direction != UP_PRESSED) {direction = UP_PRESSED;hero.setFrameSequence(new int[] { 0, 1, 2 });} else {hero.nextFrame();}if (hero.getY() - STEP >= 0)hero.move(0, -STEP);elsehero.setPosition(hero.getX(), 0);} else if ((keyState & LEFT_PRESSED) != 0) {if (direction != LEFT_PRESSED) {direction = LEFT_PRESSED;hero.setFrameSequence(new int[] { 9, 10, 11 });} else {hero.nextFrame();}if (hero.getX() - STEP >= 0)hero.move(-STEP, 0);elsehero.setPosition(0, hero.getY());} else if ((keyState & RIGHT_PRESSED) != 0) {if (direction != RIGHT_PRESSED) {direction = RIGHT_PRESSED;hero.setFrameSequence(new int[] { 3, 4, 5 });} else {hero.nextFrame();}if (hero.getX() + hero.getWidth() < WORLD_WIDTH)hero.move(STEP, 0);elsehero.setPosition(WORLD_WIDTH - hero.getWidth(), hero.getY());}checkCollision(direction);// Next scroll the view if needed//地图滚动if (hero.getX() < view[X] +view[WIDTH]/2){//左,+ hero.getWidth()int dx = view[X] +view[WIDTH]/2 - hero.getX() ;if (view[X] - dx >= 0){view[X] -= dx;}}else if(hero.getX() > view[X]  + view[WIDTH]/2){//右- hero.getWidth()int dx = hero.getX()- view[X]  - view[WIDTH]/2;if(view[X] + view[WIDTH] <= WORLD_WIDTH){view[X] += dx;}}if (hero.getY() < view[Y] + view[HEIGHT]/2){ // scoll up,+hero.getHeight()int dy = view[Y] + view[HEIGHT]/2 - hero.getY();if (view[Y] - dy >= 0){view[Y] -= dy;}}else if(hero.getY()> view[Y] + view[HEIGHT]/2){ // scroll downint dy =hero.getY() - view[Y] - view[HEIGHT]/2;if(view[Y] + view[HEIGHT] <= WORLD_HEIGHT){view[Y] += dy;}}layerManager.setViewWindow(view[X],view[Y],view[WIDTH],view[HEIGHT]);}private void checkCollision(int direction) {if (hero.collidesWith(barrierLayer, false)) {switch (direction) {case LEFT_PRESSED:hero.move(STEP, 0);break;case RIGHT_PRESSED:hero.move(-STEP, 0);break;case UP_PRESSED:hero.move(0, STEP);break;case DOWN_PRESSED:hero.move(0, -STEP);break;}positionAtWorld();//障碍物的值byte arrayValue=Consts.barrierLayer_cells[indexY*barrierLayer.getColumns()+indexX];System.out.println("arrayValue="+arrayValue);switch (arrayValue) {case 5:case 14:case 15:case 16:case 17:case 19://根据障碍物的值一一处理事件break;}}}//障碍物在地图上的列,行坐标索引(根据人物当前位置和方向推算)private int indexX,indexY;//角色碰撞的障碍物在地图上的列,行坐标索引private void positionAtWorld() {int x=hero.getX()/CELL_WIDTH;//24,这样不精确，不能整除的话可能要+1int y=hero.getY()/CELL_HEIGHT;//35System.out.println("x========"+x);System.out.println("y========"+y);switch (direction) {case UP_PRESSED:// 上indexX = x;indexY = y - 1;break;case DOWN_PRESSED:// 下indexX = x;indexY = y + 1;break;case LEFT_PRESSED:// 左indexX = x - 1;indexY = y;break;case RIGHT_PRESSED:// 右indexX = x + 1;indexY = y;break;}}}

import java.io.IOException;import javax.microedition.lcdui.Image;import javax.microedition.lcdui.game.TiledLayer;public class Tools {public static Image getImage(String name){Image image=null;try {image=Image.createImage(name);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return image;}public static final boolean isCollideWith(int ax,int ay,int aw,int ah,int bx,int by,int bw,int bh){if(ay-by>bh||ax-bx>bw||by-ay>ah||bx-ax>aw){return false;}return true;}public static void fillCells(TiledLayer tl,byte[][] map){//二维数组for(int i=0;i<tl.getColumns();i++)for(int j=0;j<tl.getRows();j++)tl.setCell(i, j, map[j][i]);}public static void fillCells(TiledLayer tl,byte[] map){//一维数组for(int i=0;i<map.length;i++){int col=i%tl.getColumns();int row=(i-col)/tl.getColumns();tl.setCell(col,row,map[i]);}}}

public class Consts {//键值 Nokia,SE机型  public final static int KEY_UP = -1;  public final static int KEY_DOWN = -2;  public final static int KEY_LEFT = -3;  public final static int KEY_RIGHT = -4;  public final static int KEY_LS = -6;  public final static int KEY_RS = -7;  public final static int KEY_OK = -5;  public final static int KEY_BACK = -11;    public final static byte KEY_0 = 48;  public final static byte KEY_1 = 49;  public final static byte KEY_2 = 50;  public final static byte KEY_3 = 51;  public final static byte KEY_4 = 52;  public final static byte KEY_5 = 53;  public final static byte KEY_6 = 54;  public final static byte KEY_7 = 55;  public final static byte KEY_8 = 56;  public final static byte KEY_9 = 57;  public final static byte KEY_STAR = 42;  public final static byte KEY_SHARP = 35;      public static byte[] groundLayer_cells = new byte[] {     1, 1, 2, 3, 3, 3, 4, 3, 3, 3, 3, 3,  3, 3, 6, 3, 3, 7, 8,3, 3, 3, 3, 3,  3, 3, 6, 3, 3, 3, 3, 8,3, 3, 3, 3,  3, 3, 6, 3, 3, 3, 3, 7, 8, 9,3, 3,  3, 3, 6, 3, 3, 3, 3, 3, 7, 3,3, 3,  3, 3, 6, 3, 3, 3, 3, 3, 3, 3,3, 3,  11,11,10,11,11,11,11,11,11,11,3, 3,  3, 3, 6, 3, 3, 18, 3, 7, 3, 3,3, 3,  3, 3, 12, 1, 1, 1, 1, 13, 3, 3,3, 3,  3, 3, 3, 3, 3, 3, 3, 18, 3, 3,3, 3,  3, 3, 3, 3, 3, 3, 3, 18, 3, 3,3, 3,  3, 3, 3, 3, 3, 3, 3, 18, 3, 3,3, 3  };  public static byte[] barrierLayer_cells = new byte[] {   0, 0, 0, 14, 0, 0, 8, 5, 5, 5,5, 5,   0, 15, 0, 0, 0, 0, 0, 8, 5, 5,5, 5,   0, 0, 0, 15, 0, 0, 14, 8, 9, 5,5, 5,   0, 19, 0, 0, 15, 0, 14, 0, 8, 9,5, 5,   0, 0, 0, 20, 0, 14, 0, 0, 8, 9,5, 5,   0, 0, 0, 16, 14, 16, 0, 0, 0, 0,5, 5,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0,5, 5,   15, 0, 0, 16, 0, 0, 0, 0, 0, 0,5, 5,   19, 15, 0, 0, 0, 0, 0, 0, 17, 0,5, 5,   0, 15, 16, 0, 0, 15, 0, 0, 0, 0,5, 5,   0, 15, 16, 0, 0, 15, 0, 0, 0, 0,0, 0,   0, 15, 16, 0, 0, 15, 0, 0, 0, 0,0, 0   };  }