文章插图
大体路线已经出来了 ， 我们需要获取这条线上的坐标点 ， pathMeasure类可以获取path路径上的点数
源码解析
pathMeasure.getLength()获取点数pathMeasure.getPosTan(距离,pos,tan);源码解释：* @param distance The distance along the current contour to sample 沿轮廓到样本的距离* @param pos If not null, returns the sampled position (x==[0], y==[1])* @param tan If not null, returns the sampled tangent (x==[0], y==[1])* @return false if there was no path associated with this measure object*/public boolean getPosTan(float distance, float pos[], float tan[]) {if (pos != null && pos.length < 2 ||tan != null && tan.length < 2) {throw new ArrayIndexOutOfBoundsException();}return native_getPosTan(native_instance, distance, pos, tan);}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {super.onSizeChanged(w, h, oldw, oldh);......pathMeasure = new PathMeasure();pathMeasure.setPath(roadPath,false);}到这里 ， 我们就可以拿到路径了 ， 我们还需要把妖怪大道path集合存入到每个野怪属性里 ， 让野怪沿着这条路线走 ， public class BlameBean {private int blameId;public int x;public int y;public int speed;//行走速度public int HP;//血量public boolean isAttacks;//是否可以被攻击public boolean wounded;//受伤效果public int position=0;public List<RoadXY> roadXYList = new ArrayList<>();position是走到第几步 ， roadXYList就是路线 ， 动态添加6个野怪 ， 路线别忘记添加了 ， 3000可以理解为整条路线野怪需要走3000步才能到终点 。1.3、动态添加野怪
/** * 添加一个野怪 */private void addBlame() {if (countDownTimer != null) {return;}countDownTimer = new CountDownTimer(12000, 2000) {@Overridepublic void onTick(long millisUntilFinished) {if (blameList.size() >= 6) {return;}BlameBean blameBean = new BlameBean();blameBean.setHP(100);blameBean.setSpeed(1);blameBean.setX(towerX + 200);blameBean.setY(0);List<BlameBean.RoadXY> roadXYList = blameBean.getRoadXYList();for (int i = 0; i < 3000; i++) {pathMeasure.getPosTan(i/3000f * pathMeasure.getLength(),pos,tan);BlameBean.RoadXY roadXY = new BlameBean.RoadXY();roadXY.setRoadX((int) pos[0]);roadXY.setRoadY((int) pos[1]);roadXYList.add(roadXY);}blameBean.setRoadXYList(roadXYList);blameList.add(blameBean);}@Overridepublic void onFinish() {}};}1.4、添加防御塔 ， 动态创建A炮
文章插图
Activity中mBinding.create.setOnClickListener(v ->{TowerView5 towerView = new TowerView5(activity);RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);lp.width = 700;lp.height = 700;towerView.setLayoutParams(lp);//一旦放置成功后调用towerView.setTowerListener(() -> {int raduis = 350;towerView.setMove(false);mBinding.TowerView.addTower((int)towerView.getX()+raduis,(int)towerView.getY()+raduis,raduis);});mBinding.layoutRelative.addView(towerView);listTower.add(towerView);});View中/*** 添加一个防御塔*/public void addTower(int x, int y, int raduis) {TowerBean towerBean = new TowerBean();towerBean.setTowerId(towerList.size());towerBean.setAttacksSpeed(500);towerBean.setHarm(5);towerBean.setX(x);towerBean.setY(y);towerBean.setRaduis(raduis);towerList.add(towerBean);}我们添加完成需要在ondraw方法中绘制出来@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);//野怪路线canvas.drawPath(roadPath,roadPaint);//皇帝for (int i = 0; i < blameList.size(); i++) {if (blameList.get(i).getX() > (towerX * 2 - 100) && blameList.get(i).getHP() > 0) {kingHP -= blameList.get(i).getHP();}}if (kingHP <= 0) {kingHP = 0;canvas.drawText("失败", towerX, towerY, tp);valueAnimator.cancel();}canvas.drawText("皇帝" + kingHP, towerX * 2 - 100, 200, tp);//野怪移动for (int i = 0; i < blameList.size(); i++) {BlameBean blameBean = blameList.get(i);if (blameBean.getHP() > 0) {canvas.drawRect(blameBean.getX() - 40, blameBean.getY()-15, blameBean.getX() + 60, blameBean.getY()-5, towerPaint);canvas.drawRect(blameBean.getX() - 39, blameBean.getY() - 10, blameBean.getX() + 58 - (100 - blameBean.getHP()), blameBean.getY() - 10, hpPaint);bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.yeguai2);canvas.drawBitmap(bitmap, blameBean.getX() - 20, blameBean.getY() , tp);}}}
经验总结扩展阅读
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