【Android小游戏】安卓小游戏开发（手把手教学系列三）

想起当年初学安卓时，Java还不懂，大一做类似这样的游戏的时候，居然不用线程


想想也是醉了，现在来填几年前的坑


开始：

就像之前两篇一样，要一个游戏人物，一个游戏运行Activity

1.游戏人物：

package yyc.com.htmltextview.Plane;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.View;
import yyc.com.htmltextview.R;

/**
* Created by Administrator on 2015/10/23.
*/
public class PlaneView extends View {
public float currentX,currentY;
Bitmap plane;

public PlaneView(Context context){
super(context);
plane= BitmapFactory.decodeResource(context.getResources(),R.drawable.doge);//飞机
setFocusable(true);
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint p=new Paint();
canvas.drawBitmap(plane,currentX,currentY,p);
}
}

2.游戏Activity:

package yyc.com.htmltextview.Plane;

import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

import yyc.com.htmltextview.R;

/**
* Created by Administrator on 2015/10/23.
*/
public class GameView extends Activity {
private int speed=10;
float startx,starty;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
final PlaneView pl=new PlaneView(this);
setContentView(pl);
pl.setBackgroundResource(R.drawable.ba);

WindowManager windowManager=getWindowManager();
Display display=windowManager.getDefaultDisplay();
DisplayMetrics metrics=new DisplayMetrics();
display.getMetrics(metrics);
pl.currentX=metrics.widthPixels/2;
pl.currentY=metrics.heightPixels-40;

pl.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startx = event.getX();
starty = event.getY();
break;
case MotionEvent.ACTION_MOVE:
int offset = (int) (event.getX() - startx) / 3;
// Log.e("TAST", offset + "offset");
if (offset >50) {
//右
pl.currentX+=speed;
}else if(offset<-50){
pl.currentX-=speed;
//左
Log.e("TAG", "offset<-50");
}
float upoffset = event.getY() - starty;
if (upoffset> 50) {
//下
pl.currentY+=speed;
Log.e("TAG", "upoffset> 50");
}else if(upoffset<-50){
//上
pl.currentY-=speed;
Log.e("TAG", "upoffset<-50");
}

// invalidate();
pl.invalidate();
default:
break;
}

return true;
}
});
}
}

运行结果如下（没弄GIF图，但测试可行

）