import java.awt.*;
public abstract class shape		//this is the parent class for a shape that gravitates to a certain place
{
	public int centerX, centerY, size, gravX, gravY;
	public double Xvel, Yvel;
	public boolean stopped;
	//sets the size, coordinates, initial velocity and ending coordinates.
	public shape(int x, int y, int size, int xVel, int yVel, int gravX, int gravY)
	{
		centerX=x;
		centerY=y;
		this.size=size;
		Xvel=(double)xVel;
		Yvel=(double)yVel;
		this.gravX=gravX;
		this.gravY=gravY;
		stopped=false;
	}
	public abstract void paint(Graphics g);		//drawing method to be defined by child classes
	public void changevelocity()		//changes the velocity to go one pixel in the direction of the ending coordinates
	{
		if (!stopped)
		{
			if (gravX != centerX)
				Xvel+=((gravX-centerX)/Math.abs(gravX-centerX))*10;
			if (gravY != centerY)
				Yvel+=((gravY-centerY)/Math.abs(gravY-centerY))*10;
		}
	}
	public void changeposition()		//changes the coordinates according to the velocity values
	{
		if (!stopped)
		{
			centerX+=(int)(Xvel/10);
			centerY+=(int)(Yvel/10);
			Xvel=Xvel*.9;
			Yvel=Yvel*.9;
			if ((Math.abs(centerX-gravX)<=2) && (Math.abs(centerY-gravY)<=2) /*&& Math.abs(Xvel)<1.5 && Math.abs(Yvel)<1.5*/)
				stopped=true;		//check to see if it's gravitated to it's final spot or close
		}
		else
		{
			centerX=gravX;
			centerY=gravY;
		}
	}
	//(because I have a basically constant acceleration, or a cheap simulation of it, the letters seem to 'gravitate' to the spots,
	//falling toward the ending point and seemingly getting caught by it's gravitational grip.
	public boolean isStopped()
	{
		return stopped;
	}
	//returns whether this shape is moving still
}