package chenlong.chenlong.viewstudy.myview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.LinearLayout;

import java.util.ArrayList;
import java.util.List;

import androidx.annotation.Nullable;
import chenlong.chenlong.viewstudy.MainActivity;

public class flyer extends LinearLayout {
    public int fraction;
    Paint mPaint = new Paint();
    Paint TPaint = new Paint();
    Paint DPaint = new Paint();

    aircraft aircraft;
    List<bullet> bullet_list = new ArrayList<bullet>();
    List<aircraft> enemy_flyer_list = new ArrayList<aircraft>();
    Thread T;
    int NUM = 0;


    int mw;
    int mh;
    int FPS = 60;
    int num_move = 0;

    public flyer(Context context) {
        this(context, null);
//        initP();

    }

    public flyer(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
//        initP();

    }

    public flyer(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initP();

    }

    protected void initP() {
//        fraction= MainActivity.fraction_history;
        aircraft = new aircraft();
        System.out.println(aircraft.x);
        System.out.println(aircraft.y);
        mPaint.setColor(Color.BLACK);//画笔颜色
        mPaint.setAntiAlias(true);
        mPaint.setStyle(Paint.Style.FILL);//画笔模式为填充
        mPaint.setStrokeWidth(10f);//画笔宽度
        TPaint.setColor(Color.BLACK);//画笔颜色
        TPaint.setAntiAlias(true);
        TPaint.setStyle(Paint.Style.FILL);//画笔模式为填充
        TPaint.setStrokeWidth(5);//画笔宽度
        TPaint.setTextSize(50);

        DPaint.setColor(Color.RED);//画笔颜色
        DPaint.setAntiAlias(true);
        DPaint.setStyle(Paint.Style.FILL);//画笔模式为填充
        DPaint.setStrokeWidth(5);//画笔宽度
        DPaint.setTextSize(50);
        //生成敌机


    }

    int randint(int max, int min) {
        int ran2 = (int) (Math.random() * (max - min) + min);
        return ran2;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        super.onTouchEvent(event);
        int X = (int) event.getX();
        int Y = (int) event.getY();
        Log.i("view", String.format("X:%d , Y:%d", X, Y));

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                Log.i("按下", String.format("X:%d , Y:%d", X, Y));
                float l = (float) Math.pow(Math.pow((X - aircraft.x), 2) + Math.pow((Y - aircraft.y), 2), 0.5);
                System.out.println(l);
                if (l < 80) {
                    System.out.println("发射");
                    bullet_list.add(new bullet(X, Y));
                }
                break;
            case MotionEvent.ACTION_MOVE:
                Log.i("移动", String.format("X:%d , Y:%d", X, Y));
                num_move += 1;
                if (num_move > 2) {
                    num_move = 0;
                    bullet_list.add(new bullet(X, Y));

                }
                aircraft.move(X, Y);
                break;
            case MotionEvent.ACTION_UP:
                Log.i("抬起", String.format("X:%d , Y:%d", X, Y));

                break;
        }

        invalidate();
        return true;

    }

    float p2pline(int x1, int y1, int x2, int y2) {
        return (float) Math.pow(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2), 0.5);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        try {
            aircraft.draw_(canvas);//绘制飞机
            for (bullet bu : bullet_list) {//绘制子弹
                bu.draw_(canvas);
            }
            for (aircraft air : enemy_flyer_list) {//绘制敌机
                canvas.drawCircle(air.x, air.y, 20, DPaint);
            }
            canvas.drawText(String.format("飞机坐标:X:%d , Y:%d,飞行子弹数量：%d", aircraft.x, aircraft.y, bullet_list.size()), 20, 80, TPaint);
            canvas.drawText(String.format("敌机数量：%d", enemy_flyer_list.size()), 20, 160, TPaint);
            canvas.drawText(String.format("分数：%d", fraction), 20, 220, TPaint);
        } catch (Exception e) {
            System.out.println(e);
        }
    }

    private void updata() {
        for (bullet bu : bullet_list) {
            bu.y -= 1;
            for (aircraft air : enemy_flyer_list) {
                float l = (float) Math.pow(Math.pow(bu.x - air.x, 2) + Math.pow(bu.y - air.y, 2), 0.5);
                if (l < 30) {
                    System.out.println("击中");

                    fraction += 1;
                    MainActivity.pref.edit().putInt("fraction", fraction).apply();//保存分数
                    enemy_flyer_list.remove(air);//移除敌机
                    bullet_list.remove(bu);//移除子弹
                }
                if (enemy_flyer_list.size() < 10) {
                    for (int o = 0; o < 20; o++) {
                        enemy_flyer_list.add(new aircraft(randint(100, mw - 100), randint(100, mh / 2)));
                    }
                }
                if (bu.y < 0) {
                    bullet_list.remove(bu);
                }

            }

        }

    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        mw = w;
        mh = h;
        aircraft.x = mw / 2;
        aircraft.y = mh - 200;


        for (int o = 0; o < 30; o++) {

            enemy_flyer_list.add(new aircraft(randint(100, mw - 100), randint(100, mh / 2)));

        }
        T = new Thread() {
            public void run() {
                long oldtime = System.currentTimeMillis();
                while (true) {
                    NUM += 1;
                    long newtime = System.currentTimeMillis();

                    if (NUM > 5000) {
                        oldtime = newtime;
                        try {
                            updata();
                            NUM = 0;
                            invalidate();
                        } catch (Exception e) {

                            System.out.println(e);
                        }


                    }
                }
            }
        };
        T.start();

        invalidate();
        System.out.println(String.format("W:%d ， H:%d", mw, mh));


    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    class bullet {
        int x;
        int y;

        bullet(int x, int y) {
            this.x = x;
            this.y = y;
        }

        void draw_(Canvas canvas) {
            canvas.drawCircle(this.x, this.y, 5, mPaint);
        }
    }

    class aircraft {
        int x = mw / 2;
        int y = mh - 80;
        String name = "我方战斗机";
        int health = 100;


        public aircraft() {
            this(mw / 2, mh - 80);
        }

        public aircraft(int x, int y) {
            this.x = x;
            this.y = y;
        }

        boolean move(int x, int y) {
            try {
                this.x = x;
                this.y = y;
                return true;
            } catch (Exception e) {
                return false;
            }
        }

        void fire() {
            bullet_list.add(new bullet(this.x, this.y));
        }

        void draw_(Canvas canvas) {
            canvas.drawCircle(aircraft.x, aircraft.y, 50, mPaint);
        }
    }
}