package class2_1_DuckStrategies_v6;

import java.awt.Point;

public class RandomSwimming implements SwimBehavior {
    private Duck parent;

    public RandomSwimming(Duck parent) {
        this.parent = parent;
    }

    @Override
    public void swim() {
        if( (parent.currentPos.x > (DuckPond.PONDSIZE-parent.image.getWidth(null))) // leaving the window's right edge
                || (parent.currentPos.x < 0) ) { // ...or left edge
            parent.increment.x = -parent.increment.x; // reverse direction
        }

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

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

        // Create a new random increment for the next movement (the next time this method is called)
        // Note: increments between -2 and +2 will be generated.
        parent.increment = new Point(parent.random.nextInt(5)-2, parent.random.nextInt(5)-2 );

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

    }
}