import java.awt.*;
public class interactinglettersnorefresh extends fallingletter
{
	public static final Font FONT= new Font("Serif", Font.BOLD, 20);
	protected int xmax, ymax, x2ago, y2ago, lastx, lasty;
	protected float vx;
	public final int UP=1, DOWN=2, LEFT=4, RIGHT=8;
	public interactinglettersnorefresh(char newletter, int newx, int newy, int rightbound, int ground)
	{
		super(newletter, newx, newy);
		xmax=rightbound;
		ymax=ground;
	}
	public Point getPoint()
	{
		return (new Point(x, y));
	}
	//no setBackground() method, I don't need it
	public void update()
	{
		x+=(int)vx;
		y+=v;
		v+=1;
		if (vx<=-1)
			vx+=.1;
		else if (vx>=1)
			vx-=.1;
		if (y>ymax)
		{
			y=ymax;
			bounce(UP);
		}
		else if (y<0)
			bounce(DOWN);
		if (x>xmax-10)
			bounce(LEFT);
		else if (x<0)
			bounce(RIGHT);
	}
	public void bounce(int direction)
	{
		if ((direction&UP)>0)
			v=-9*Math.abs(v)/10;
		else if ((direction&DOWN)>0)
			v=Math.abs(v);
		if ((direction&LEFT)>0)
			vx=-Math.abs(vx);
		else if ((direction&RIGHT)>0)
			vx=Math.abs(vx);
	}
	public void interact(interactinglettersnorefresh letter2)
	{
		int x2 = letter2.getPoint().x;
		int y2 = letter2.getPoint().y;
		int bounce1=0, bounce2=0;
		if (Math.abs(x-x2)<=10 && Math.abs(y-y2)<=20 &! Character.isWhitespace(letter) &! Character.isWhitespace(letter2.getLetter()))
		{
			if (x<x2)
			{
				vx=x-x2;
				letter2.setVX(x2-x);
				bounce1 |=LEFT;
				bounce2 |=RIGHT;
			}
			else if (x2<x)
			{
				vx=x2-x;
				letter2.setVX(x-x2);
				bounce1 |=RIGHT;
				bounce2 |=LEFT;
			}
			if (y>y2)
			{
				bounce1 |=DOWN;
				bounce2 |=UP;
			}
			else if (y2>y)
			{
				bounce1 |=UP;
				bounce2 |=DOWN;
			}
			bounce(bounce1);
			letter2.bounce(bounce2);
		}
	}
	public void update(int x, int y)
	{
		this.x=x+xoffset;
		this.y=y+yoffset;
		v=0;
		vx=0;
		
	}
	public void release(int x, int y)
	{
		vx = (x-x2ago)/2;
		v = (y-y2ago)/2;
	}
	public void setVX(int newvx)
	{
		vx=newvx;
	}	
	public void draw(Graphics g)	//no more undrawing, but I still track the last two locations for throwing purposes.
	{
		g.setColor(color);
		g.drawString(new String("") + letter, x, y);
		x2ago=lastx;
		y2ago=lasty;
		lastx=x;
		lasty=y;
	}
	public char getLetter()
	{
		return letter;
	}
}