import java.awt.Graphics;
import java.awt.Color;

/**Creates a stationary object "Wall," which is a polygon, and implements interface Polygon.*/
public class Wall extends StationaryObject implements Polygon
{
  private int numberOfPoints;
  /**The coordinates of the polygon are defined by an array of x coordinate values (all the x coordinates of the points of the polygon)
   * and an array of y coordinate values (all the y coordinates of the points of the polygon)*/
  private int[] xPolygon = new int[numberOfPoints];
  private int[] yPolygon = new int[numberOfPoints];
  

  /**initializes Wall as a rectangle with all coordinates at (0,0)*/
  public Wall()
  {
    super();
    int[] x = {0, 0, 0, 0};
    int[] y = {0, 0, 0, 0};
    numberOfPoints = 4;
    setCoordinates(x, y, x.length);
  }
  
  /**Creates a polygonal wall.
   * @param name s, color c
   * @param newXPolygon  an array of x values
   * @param newYPolygon  an array of y values*/
  public Wall (String s, Color c, int[] newXPolygon, int[] newYPolygon, int newNumberOfPoints)
  {
    super(s, c);
    numberOfPoints = newNumberOfPoints;
    xPolygon = newXPolygon;
    yPolygon = newYPolygon; 
  }
  
  public void setCoordinates(int[] x, int[] y, int n)
  {
   xPolygon = x;
   yPolygon = y; 
   numberOfPoints = n;//should be x.length
  }
  
  public int[] getXCoordinates()
  {
    return xPolygon;
  }
  
  public int[] getYCoordinates()
  {
    return yPolygon;
  }
  
  /**Draws the wall onto Graphics object canvas*/
  public void draw(Graphics canvas)
  {
  canvas.setColor(super.getColor());
  canvas.drawPolygon(xPolygon, yPolygon, numberOfPoints);
  }
  
      
}