import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;

public class DoRenderMyself implements Runnable {
    private Thread loopThread;
    private GraphicsDevice screen;
    private JFrame frame;

    private BufferedImage tile;
    private BufferedImage select;
    private int tileW;
    private int tileH;
    private Point screenAnchor = new Point(0, 0);
    private Point plotP = new Point(0, 0);

    public static void main(String[] args) {
        new DoRenderMyself();
    }

    public DoRenderMyself() {
        this.frame = new JFrame("DoRenderMyself");
        this.frame.addMouseMotionListener(this.new Mouse());
        this.frame.setBounds(150, 100, 900, 600);
        this.frame.setIgnoreRepaint(true);
        this.frame.setUndecorated(true);
        this.frame.setVisible(true);

        this.loopThread = new Thread(this);
        screen = GraphicsEnvironment.getLocalGraphicsEnvironment()
                .getDefaultScreenDevice();
        this.loopThread.start();
    }

    public void run() {
        init();
        gameLoop();
    }

    public void init() {
        try {
            this.tile = ImageIO.read(new File("src/res/tile0.gif"));
            this.select = ImageIO.read(new File("src/res/tree0.gif"));
        } catch (IOException e) {
            e.getStackTrace();
        }

        this.tileW = tile.getWidth();
        this.tileH = tile.getHeight();

        this.frame.createBufferStrategy(3);

    }

    public void gameLoop() {

        BufferStrategy buff = this.frame.getBufferStrategy();
        Graphics g = buff.getDrawGraphics();
        BufferedImage iBuffer = new BufferedImage(this.frame.getWidth(),
                this.frame.getHeight(), BufferedImage.TYPE_INT_ARGB);

        while (true) {
            try {
                Thread.sleep(100);
            } catch (Exception e) {

            }

            Graphics2D g2 = (Graphics2D) iBuffer.getGraphics();

            paint(g2);
            g.drawImage(iBuffer, 0, 0, this.frame);
            System.out.println("f");
            buff.show();
        }
    }

    public void paint(Graphics2D g2) {
        g2.clearRect(0, 0, this.frame.getWidth(), this.frame.getHeight());

        g2.scale(2, 2);
        for (int r = 0; r < 20; r++) {
            for (int c = 0; c < 20; c++) {
                map_To_Screen(c, r, plotP);
                g2.drawImage(this.tile, plotP.x, plotP.y, null);
                g2.setColor(Color.WHITE);
                // g2.drawString(r + ", " + c, this.plotP.x + 10,
                // this.plotP.y + 10);
                if (c % 2 == 0) {
                    g2.drawImage(this.select, plotP.x, plotP.y - 40, null);
                }
            }
        }
        g2.dispose();
    }

    public void map_To_Screen(int mapCol, int mapRow, Point p) {
        int x = mapCol * (tileW >> 1) - mapRow * (tileW >> 1)
                - this.screenAnchor.x;
        int y = mapCol * (tileH >> 1) + mapRow * (tileH >> 1)
                - this.screenAnchor.y;
        p.x = x;
        p.y = y;
    }

    class Mouse extends MouseMotionAdapter {
        public void mouseMoved(MouseEvent e) {
            int mX = e.getX();
            int mY = e.getY();
            DoRenderMyself.this.frame.setTitle(mX + ", " + mY);
            if (mX < 18) {
                DoRenderMyself.this.screenAnchor.x -= 8;
            }
            if (mY < 18) {
                DoRenderMyself.this.screenAnchor.y -= 8;
                System.out.println("up");
            }
            if (mX > DoRenderMyself.this.frame.getWidth() - 8) {
                DoRenderMyself.this.screenAnchor.x += 18;
            }
            if (mY > DoRenderMyself.this.frame.getHeight() - 8) {
                DoRenderMyself.this.screenAnchor.y += 18;
            }
        }

    }
}