移动3D赛车游戏_J2ME手机游戏源代码

package game.entities; import javax.microedition.m3g.*; import game.terrain.*; public class Car { static Group carGroup; public CarCanvas parent; public Velocity velocity = new Velocity(); public float [] carCoords = new float[3]; public static float matrix[]=new float[16]; private static final float X_POS = 0.0f; private static final float Y_POS = 0.01f; private static final float Z_POS = 0.0f; private static float ANGLE_INCR = 2.0f; public static float MOVE_INCR = 0.0f; public boolean upPressed = false; public boolean downPressed = false; public boolean leftPressed = false; public boolean rightPressed = false; private Transform trans = new Transform(); private float[] transMat = new float[16]; public float xCoord, yCoord, zCoord; public float xAngle = 0; public float yAngle; public float zAngle = 0; float lol = 0; private Group transGroup = new Group(); private Group group = new Group(); private Camera backcam = new Camera(); private Camera nosecam = new Camera(); private Camera sidecam = new Camera(); public int width; public int height; Group wheel1; Group wheel2; Group wheel3; Group wheel4; Transform tr_cam = new Transform(); private boolean up_cam = false; private boolean down_cam = false; static final int UP_CAM = 9; static final int DOWN_CAM = 11; static final int SHOW_POSITION = 10; static final int UP = 1; //Canvas.UP = UP static final int DOWN = 6; //Canvas.DOWN = DOWN static final int LEFT = 2; //Canvas.LEFT = LEFT static final int RIGHT = 5;//Canvas.RIGHT = RIGHT private MobileBackground mobileBackGnd; private Group floorGroup ; private RayIntersection ri = new RayIntersection(); private final float MAX_HEIGHT =100f; public void up_cam() { backcam.getTransform(tr_cam); tr_cam.postTranslate(0,0.05f,0); backcam.setTransform(tr_cam); } public void down_cam() { backcam.getTransform(tr_cam); tr_cam.postTranslate(0,-0.05f,0); backcam.setTransform(tr_cam); } //构造函数 public Car(int w, int h) { width = w; height = h; set(); } private Group scaleCar = new Group(); public void set() { setCamera(); setCarEntity(); transGroup = new Group(); trans.postTranslate(X_POS, Y_POS, Z_POS); transGroup.addChild(backcam); transGroup.addChild(nosecam); transGroup.addChild(sidecam); scaleCar.addChild(carGroup); scaleCar.scale(0.5f, 0.5f, 0.5f); transGroup.addChild(scaleCar); transGroup.setTransform(trans); yAngle = 0.0f; wheel1 = (Group) carGroup.find(65); wheel2 = (Group) carGroup.find(69); wheel3 = (Group) carGroup.find(63); wheel4 = (Group) carGroup.find(67); } public void setCamera() { float aspectRatio = ((float) width) / ((float) height); backcam.postRotate(-20,1,0,0); backcam.setTranslation(0,2,4);; backcam.setPerspective(60.0f, aspectRatio, 0.5f, 1000.0f); nosecam.setPerspective(60.0f,aspectRatio,0.5f,1000); nosecam.setTranslation(0,0.75f,0.25f); sidecam.setPerspective(60.0f,aspectRatio,0.5f,1000); sidecam.setTranslation(-2,0.75f,2.5f); sidecam.postRotate(-45,0,1,0); } public void setCarEntity() { World carw = loadWorld("/models/car.m3g"); carGroup = (Group) carw.find(62); carw.removeChild(carGroup); } //载入World public World loadWorld(String fn) { Object3D[] tile = load(fn); World w = null; for (int i = 0; i < tile.length; i++){ try{ w = (World)tile[i]; break; }catch(Exception ex){ } } return w; } //载入3DObject public Object3D[] load( String fn ){ Object3D[] obj = null; try { obj = Loader.load(fn); } catch(Exception e) { e.printStackTrace(); } return obj; } public Group getCameraGroup() { return transGroup; } public Group getObjectGroup() { return group; } //获取照相机 public Camera getBackCamera() { return backcam; } public Camera getNoseCamera() { return nosecam; } public Camera getSideCamera() { return sidecam; } //响应键盘(按下) public void pressedKey(int gameAction){ switch(gameAction) { case UP_CAM: up_cam = true; break; case DOWN_CAM: down_cam = true; break; case UP: upPressed = true; break; case DOWN: downPressed = true; break; case LEFT: leftPressed = true; break; case RIGHT: rightPressed = true; break; default: break; } } //响应键盘(释放) public void releasedKey(int gameAction){ switch(gameAction) { case UP_CAM: up_cam = false; break; case DOWN_CAM: down_cam = false; break; case UP: upPressed = false; break; case DOWN: downPressed = false; break; case LEFT: leftPressed = false; break; case RIGHT: rightPressed = false; break; default: break; } } //响应键盘,移动汽车 public void update(){ try { Thread.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); } if( up_cam ) { up_cam(); } if( down_cam ) { down_cam(); } transGroup.getTransform(trans); getPosition(); if (upPressed){ if (MOVE_INCR >= 0) MOVE_INCR = velocity.accelerate(); else if (MOVE_INCR < 0) MOVE_INCR = -velocity.brake(20); } else if (downPressed){ if (MOVE_INCR <= 0){ MOVE_INCR = -velocity.accelerate(); }else if (MOVE_INCR > 0){ MOVE_INCR = velocity.brake(); } }else{ if (MOVE_INCR >= 0) MOVE_INCR = velocity.brake(60); else MOVE_INCR = -velocity.brake(60); } if (MOVE_INCR != 0) { if(leftPressed || rightPressed) updateYaw(); } updateMove(); backcam.setTranslation(lol,2.5f,4); float f[] = new float[4]; wheel2.getOrientation(f); if(leftPressed){ if (lol > -1) lol = lol - 0.1f; if (f[0] < 140) { wheel1.postRotate( -5, 0, 0, 1); wheel2.postRotate( -5, 0, 0, 1); } }else if(rightPressed){ if (lol < 1) lol = lol + 0.1f; if (f[0] > 100) { wheel1.postRotate(5, 0, 0, 1); wheel2.postRotate(5, 0, 0, 1); } }else{ if (lol < -0.1f) lol = lol + 0.1f; else if (lol > 0.1f) lol = lol - 0.1f; else lol = 0; if (f[0] > 119.99975f) { wheel1.postRotate(5, 0, 0, 1); wheel2.postRotate(5, 0, 0, 1); }else if (f[0] < 119.99975f) { wheel1.postRotate( -5, 0, 0, 1); wheel2.postRotate( -5, 0, 0, 1); } } wheel1.getChild(0).postRotate(-MOVE_INCR * 100,0,1,0); wheel2.getChild(0).postRotate(-MOVE_INCR * 100,0,1,0); wheel3.getChild(0).postRotate(-MOVE_INCR * 100,0,1,0); wheel4.getChild(0).postRotate(-MOVE_INCR * 100,0,1,0); terrainCheck(); } //更新汽车的移动位置 public void updateMove(){ trans.postTranslate(0, 0, -MOVE_INCR); } //更新汽车的偏移角 public void updateYaw(){ if (leftPressed) { yAngle += ANGLE_INCR; }else if (rightPressed){ yAngle -= ANGLE_INCR; } if (yAngle >= 360.0f) yAngle -= 360.0f; else if (yAng