import java.awt.*;
import java.awt.event.*;

public class Fly extends Thread implements MouseListener {

	public int angle;
	public int x;
	public int y;
	public Network fly;
	public FlyApplet app;
	
	
	public double cos( double a , int radius ) {
	
		a = ( a * Math.PI ) / 180;
		return Math.cos( a ) * radius;
		
	}
	
	public double sin( double a , int radius ) {
	
		a = ( a * Math.PI ) / 180;
		return Math.sin( a ) * radius;
		
	}
	
	public Fly( FlyApplet a , Network n ) {
	
		app = a;
		x = 300;
		y = 100;
		angle = 170;
		fly = n;
		app.addMouseListener(this);
		
	}
	
	public Image drawFly() {
	
		int lwx;
		int lwy;
		int rwx;
		int rwy;
		
		Image a;
		Graphics g;
		
		a = app.createImage(20,20);
		g = a.getGraphics();
		
		g.setColor(Color.white);
		g.fillRect(0,0,20,20);
		
		lwy = (int) (sin(angle , 8) + 8);
		lwx = (int) (-1 * cos(angle , 8) + 8);
		
		rwy = (int) (-1 * sin(angle , 8) + 8);
		rwx = (int) (cos(angle , 8) + 8);
		
		
		
		g.setColor( Color.black );
		g.fillOval( 5 , 5 , 10 , 10 );
		
		
		g.setColor( new Color( ((fly.LEFT.getRate() / 3) + 125) % 255 , 0, 175 ) );
		g.fillOval( lwx , lwy , 4 , 4 );
		g.setColor( new Color( ((fly.RIGHT.getRate() / 3) + 125) % 255 , 0, 175 ) );	
		g.fillOval( rwx , rwy , 4 , 4 );
		
		return a;
		
	}
	
	public void update() {
		
		int lwing = fly.LEFT.getRate();
		int rwing = fly.RIGHT.getRate();
		
		if (lwing < 5) lwing = 5;
		if (rwing < 5) rwing = 5;
		
		if (rwing >= lwing) angle = (angle + ((rwing / lwing) /2)) % 360;
		else angle = (angle - ((lwing / rwing) / 2)) % 360 ;
		int tmp_x = x;
		int tmp_y = y;
		
		
		int factor = (lwing + rwing) / 20;
		tmp_y -= (int) (sin(angle + 90 , factor));
		tmp_x += (int) (cos(angle + 90 , factor));
		
		if (tmp_x < 0) tmp_x = 600;
		if (tmp_y < 0) tmp_y = 400;
		if (tmp_x > 600) tmp_x = 0;
		if (tmp_y > 400) tmp_y = 0;
		
		x = tmp_x;
		y = tmp_y;
		
		
	}
	
	public void stimulate() {
	
		int opp = Math.abs(x - app.stim_x) ;
		int adj = Math.abs(y - app.stim_y) ;
		double hyp = Math.sqrt( adj*adj + opp*opp );
		double rad_ang = Math.asin(opp / hyp);
		int deg_ang = (int) (rad_ang * 180 / Math.PI);
		int ang = 0;
		if (app.stim_y < y && app.stim_x < x) ang = deg_ang - angle + 90;
		else if (app.stim_y > y && app.stim_x > x) ang = 270 - angle + deg_ang;
		else if (app.stim_y < y && app.stim_x > x) ang = 90 - deg_ang - angle;
		else if (app.stim_y > y && app.stim_x < x) ang = 90 - (angle - 180) - deg_ang;
		
		while (ang < 0) ang += 360;
		while (ang > 360) ang -= 360;

		if (ang <= 45 || ang > 345) fly.d.fire();
		else if (ang <= 90) fly.c.fire();		
		else if (ang <= 135) fly.b.fire();
		else if (ang <= 195) fly.a.fire();		
	}
	
	public void run() {
	
		Graphics g = app.getGraphics();
		Image a = app.createImage(600,600);
		Graphics gt = a.getGraphics();
		while (true) {
			stimulate();
			update();
			gt.setColor(Color.white);
			gt.fillRect(0,0,600,600);
			gt.drawImage( drawFly() , x , y, null );
			gt.setColor(Color.black);
			gt.fillOval( app.stim_x , app.stim_y , 5 , 5 );
			g.drawImage( a , 0 , 0 , null);
			app.stim_x += (int) (Math.random() * 9) - 4;
			app.stim_y += (int) (Math.random() * 9) - 4;
			
			try {Thread.sleep(100);} catch (Exception e) {}
		}
		
	}	
	
	public void mouseClicked( MouseEvent e ) {
	
		app.stim_x = e.getX();
		app.stim_y = e.getY();
		
	}
	
	public void mousePressed(MouseEvent e){}
	public void mouseEntered(MouseEvent e){}
	public void mouseExited(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}
	
}