package com.company;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.lang.invoke.ConstantCallSite;

public class GameWindow extends JFrame {


    private static GameWindow game_window;
    private static long LastFrameTime;
    private static Image background;
    private static Image drop;
    private static Image GameOver;
    private static Image restart;
    private static float drop_left = 200;
    private static float drop_top = 100;
    private static float drop_v = 200;
    private static int score = 0;
    private static boolean end;
    private static float drop_width = 100;
    private static float drop_height = 152;
    private static boolean pause = false;
    private static float drop_speed_save = 0;

    private static double mousecordX = 0;
    private static double mousecordY = 0;



    public static void main(String[] args) throws IOException {

        background= ImageIO.read(GameWindow.class.getResourceAsStream("background.png"));
        drop = ImageIO.read(GameWindow.class.getResourceAsStream("drop.png")).
                getScaledInstance (100, 100, Image.SCALE_DEFAULT);
        GameOver = ImageIO.read(GameWindow.class.getResourceAsStream("GameOver.jpg")).
                getScaledInstance (300, 200, Image.SCALE_DEFAULT);
        restart = ImageIO.read(GameWindow.class.getResourceAsStream("restart.jpg"));
        game_window = new GameWindow();
        game_window.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        game_window.setLocation (200, 100);
        game_window.setSize(1200, 850);
        game_window.setResizable(false);
        LastFrameTime=System.nanoTime();
        GameField game_field = new GameField();
        game_field.addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent e) {
                if(e.getButton() == MouseEvent.BUTTON3){
                    if(pause) {
                        pause = false;
                        drop_v = drop_speed_save;
                    }
                    else{
                        drop_speed_save = drop_v;
                        drop_v = 0;
                        mousecordX = MouseInfo.getPointerInfo().getLocation().getX();
                        mousecordY = MouseInfo.getPointerInfo().getLocation().getY();
                        pause = true;
                    }
                }
                if (pause) return;

                int x = e.getX();
                int y = e.getY();

                try {
                    Robot r = new Robot();
                    r.mouseMove((int)mousecordX, (int)mousecordY);
                }
                catch (AWTException ee){

                }


                float drop_right = drop_left + drop.getWidth(null);
                float drop_bottom = drop_top + drop.getHeight(null);
                boolean is_drop = x >= drop_left && x <= drop_right && y >= drop_top && y <= drop_bottom;
                if (is_drop) {
                    if(!(drop_height<=25 && drop_width <= 50)){
                        drop_width = drop_width - 1;
                        drop_height = drop_height - 2;
                        try{
                            dropResize();
                        }
                        catch (IOException ioe){

                        }

                    }


                    drop_top= -100;
                    drop_left =  (int) (Math.random() * (game_field.getWidth() - drop.getWidth(null)));
                    drop_v = drop_v +30;
                    score++;
                    game_window.setTitle("Score: " + score);
                }
                if (end) {
                    boolean isRestart = x>=250 && x <= 250 + restart.getWidth(null)
                            && y >= 200 && y <= 200 + restart.getHeight(null);
                    if (isRestart) {
                        end = false;
                        score = 0;
                        game_window.setTitle("Score" + score);
                        drop_top = -100;
                        drop_left = (int)(Math.random()*(game_field.getWidth()-drop.getHeight(null)));
                        drop_v = 200;
                        drop_width = 100;
                        drop_height = 152;


                    }
                }
            }
        });
        game_window.add (game_field);
        game_window.setVisible(true);
       }
       private static void dropResize() throws IOException{
           drop = ImageIO.read(GameWindow.class.getResourceAsStream("drop.png")).
                   getScaledInstance ((int) drop_width,(int)drop_height, Image.SCALE_DEFAULT);
       }

       private static void onRepaint(Graphics g){
            long currentTime = System.nanoTime();
            float delta_time = (currentTime - LastFrameTime)*0.000000001f;

            LastFrameTime = currentTime;
            drop_top=drop_top+drop_v*delta_time;
            g.drawImage(background, 0, 0, null);
            g.drawImage(drop, (int) drop_left,(int) drop_top,null);
            if (drop_top > game_window.getHeight()){
                g.drawImage(GameOver, 100, 100, null);
                g.drawImage(restart, 250, 200, null);
                end = true;
            }

       }
       private static class GameField extends JPanel{
        @Override
            protected void paintComponent(Graphics g){
            super.paintComponent(g);
            onRepaint(g);
            repaint();
        }
       }
}