import java.awt.*;

/**
  *ArcadeGamePiece supports objects being placed ona PlayingField
  *This is an abstract class because it does not know how to handle
  *collisions
  *@author John D. McGregor
  *@version 1.0
  */
public abstract class ArcadeGamePiece extends ArcadeGameObject{
	Point _currentPosition;
	PlayingField _fieldPtr;

	/**
	  *The constructor sets state
	  *@param fieldPtr reference to the PlayingField that contains the ArcadeGamePiece
	  *@param initialLocation where the ArcadeGamePiece is located 
	  */
	ArcadeGamePiece(PlayingField fieldPtr,Point initialLocation){
		_currentPosition = initialLocation;
		_fieldPtr = fieldPtr;
	}

	/**
	  *Simple accessor of the current position of the piece
	  *pre: instance exists
	  *@return the current position
	  */
	public Point getPosition(){
		return _currentPosition;
	}

	/**
	  *Simple modifier of the current position of the piece
	  *@param newPoint the new position of the ArcadeGamePiece
	  *pre:  newPoint.x >= 0 && newPoint.x <= fieldWidth && newPoint.y >= 0 && newPoint.y <= fieldHeight
	  *post: currentPosition has been updated
	  */
	public void setPosition(Point newPoint){
		_currentPosition = newPoint;
	}

	/**
	  *Modifier of the current position of the piece
	  *@param x the x component of the new position of the ArcadeGamePiece
	  *@param y the y component of the new position of the ArcadeGamePiece
	  *pre:  x >= 0 && x <= fieldWidth && y >= 0 && y <= fieldHeight
	  *post: currentPosition has been updated
	  */
	public void setPosition(int x,int y){
		_currentPosition.x = x;
		_currentPosition.y = y;
	}

	abstract void collideWithPaddle(Paddle aPaddle,Point aPoint);

	abstract void collideWithPuck(Puck aPuck,Point aPoint);
	
}