PositionIterator.java

package Q16_04_Tic_Tac_Win;

import java.util.Iterator;

public class PositionIterator implements Iterator<Position> {
	private int rowIncrement, colIncrement, size;
	private Position current;
	
	public PositionIterator(Position p, int rowIncrement, int colIncrement, int size) {
		this.rowIncrement = rowIncrement;
		this.colIncrement = colIncrement;
		this.size = size;
		current = new Position(p.row - rowIncrement, p.column - colIncrement);
	}
	
	@Override
	public boolean hasNext() {
		return current.row + rowIncrement < size && current.column + colIncrement < size;
	}

	@Override
	public Position next() {
		current = new Position(current.row + rowIncrement, current.column + colIncrement);
		return current;
	}
}