package class1_3_DuckStrategies_v2;

import java.awt.Point;

/**
 * This class represents a specialized type of Duck
 * @author hornick
 */
public class Mallard extends Duck {
	
	/**
	 * Mallard-specific constructor
	 */
	public Mallard(String name) {
		super(name, "mallard.jpg");
		
		// this value defines how far a Mallard moves each update period - s random value between 3 and 8.
		increment = new Point(random.nextInt(3)+5, random.nextInt(3)+5 ); 

		//Note that the duck's image and incremental movements could potentially be parameterized
		// as constructor call arguments, but this would increase the coupling between this class and the
		// class invoking the constructor, since the invoking class would then have to know more about
		// the inherent behavior of each type of duck created.
	}
	
	/**
	 *  This method implements a duck's default quacking behavior
	 */
	@Override
	public void quack()
	{
		System.out.println(name + ": quack!");
		quacker.play();
	}

	/**
	 * This method implements a duck's default swimming behavior.
	 * Every time this method is called, the duck's position on the screen moves
	 * a little bit according to the algorithm we implement here.
	 */
	@Override
	public void swim() {
		if( (currentPos.x > (DuckPond.PONDSIZE-image.getWidth(null))) // leaving the window's right edge
				|| (currentPos.x < 0) ) { // ...or left edge
			increment.x = -increment.x; // reverse direction
			quack(); // quack each time we reverse direction
		}

		if( (currentPos.y > (DuckPond.PONDSIZE-image.getHeight(null)))  // leaving the window's top edge
				|| (currentPos.y < 0) ) {//... or bottom edge
			increment.y = -increment.y; // reverse direction
		}

		currentPos.x += increment.x; // increment the position of the duck
		currentPos.y += increment.y; 

		setLocation(currentPos); // ...and update its location in the container
	}

}