// From text by Cay Horstmann: Java Concepts, 2005.
//cmc: modified in lecture (except cmc comments), 2/27/09

import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;

import java.awt.Color; //cmc: to color cars

/**
   A car shape that can be positioned anywhere on the screen.
*/
public class Car
{
   /**
      Constructs a car with a given top left corner
      @param x the x coordinate of the top left corner
      @param y the y coordinate of the top left corner
   */
   public Car(int x, int y, Color color) //cmc: added color parameter
   {
      xLeft = x;
      yTop = y;
      this.color = color; //cmc: set color instance variable
   }


   //cmc: "moves" the car forward
   public void forward(int pixels) {
       xLeft += pixels;
   }

   //cmc: "moves" the car backward
   public void backward(int pixels) {
       xLeft -= pixels;
   }

   /**
      Draws the car.
      @param g2 the graphics context
   */
   public void draw(Graphics2D g2)
   {
      Rectangle body 
            = new Rectangle(xLeft, yTop + 10, 60, 10);      
      Ellipse2D.Double frontTire 
            = new Ellipse2D.Double(xLeft + 10, yTop + 20, 10, 10);
      Ellipse2D.Double rearTire
            = new Ellipse2D.Double(xLeft + 40, yTop + 20, 10, 10);

      // The bottom of the front windshield
      Point2D.Double r1 
            = new Point2D.Double(xLeft + 10, yTop + 10);
      // The front of the roof
      Point2D.Double r2 
            = new Point2D.Double(xLeft + 20, yTop);
      // The rear of the roof
      Point2D.Double r3 
            = new Point2D.Double(xLeft + 40, yTop);
      // The bottom of the rear windshield
      Point2D.Double r4 
            = new Point2D.Double(xLeft + 50, yTop + 10);

      Line2D.Double frontWindshield 
            = new Line2D.Double(r1, r2);
      Line2D.Double roofTop 
            = new Line2D.Double(r2, r3);
      Line2D.Double rearWindshield
            = new Line2D.Double(r3, r4);
   
      //cmc: fill the body with color
      g2.setColor(color);
      g2.fill(body);

      //cmc: change color back to black for rest of car
      g2.setColor(Color.BLACK);
      g2.fill(frontTire);
      g2.fill(rearTire);
      g2.draw(frontWindshield);      
      g2.draw(roofTop);      
      g2.draw(rearWindshield);      
   }

   public static int WIDTH = 60;
   public static int HEIGHT = 30;
   private int xLeft;
   private int yTop;
   private Color color;  //cmc: stores the car's color value
}