import java.awt.*;
/*
 * FILE NAME: CheckerBoardL.java
 * AUTHOR: Stella
 * DATE: Sept 16, 2007
 * COMMENTS: Uses methods to draw the picture as shown in the lab3 page.
 * It uses the "L approach", as noted in the lab3 page.
 * MODIFICATION HISTORY: The idea is based on an earlier version 
 * written by Lyn (?) (when?)
 * 
 * */
public class CheckerBoardL extends BuggleWorld {
 
 public void setup () {
  this.setDimensions(8,8);
 }
 
 public void run () {
  CheckerBuggle barb = new CheckerBuggle();

  //barb.drawLshape(Color.cyan, Color.magenta);
  //barb.drawTwoLshapes(Color.cyan, Color.magenta);
  barb.draw8x8square(Color.cyan, Color.magenta);
 }
 
 //------------------------------------------------------------------------------
 // The following main method is needed to run the applet as an application

 public static void main (String[] args) {
   runAsApplication(new CheckerBoardL(), "CheckerBoardL"); 
 }
}


class CheckerBuggle extends Buggle {
  
  //Draws a 8x8 square, colored c1 and c2.
  //Starts and ends with the buggle at the right-bottom cell, 
  //of the 8x 8 square.
  //Its initial and final heading is the same, i.e. facing east
  public void draw8x8square(Color c1, Color c2) {
    System.out.println("Inside draw8x8square");
    draw4x4square(c1, c2);
    this.forward(4);
    this.draw4x4square(c1, c2);
    
    this.backLeftFwRight(4);
    
    draw4x4square(c1, c2);
    this.forward(4);
    draw4x4square(c1, c2);
    
    //move buggle to its initial position
    this.backRightFwLeft(4);
  }
  
  //Draws a 4x4 square, colored c1 and c2.
  //Ends with the buggle at the same position and heading
  //it started the square. 
  //That position is the bottom-left cell of the 4x4 square,
  //and the heading is EAST.
  public void draw4x4square(Color c1, Color c2) {
    System.out.println("Inside draw4x4square");
    this.drawTwoLshapes(c1, c2);
    this.forward(2); //get ready to start the next twoLshapes
    
    this.drawTwoLshapes(c1, c2);
    this.backward(2); //end the buggle in its initial position
  }
  
  
  //Draws an L shape, 2x3 squares big. The L shape itself is facing to the WEST
  //If the starting position is (1,1) and the initial facing is EAST,
  //the final position of the buggle will be 2,4 facing NORTH
  public void drawLshape(Color c1, Color c2) {
    System.out.println("Inside drawLshape");
    this.brushUp();
    this.paintCell(c1);
    this.forward();
    this.left();
    this.paintCell(c2);
    this.forward();
    this.paintCell(c1);
    this.forward();
    this.paintCell(c2);
    this.forward();
  }
  
  //Draws two L shapes, which make a 2x4 rectangle.
  //Starting position is on the lower-left square of the shape, and the 
  //initial heading is EAST.
  //The buggle's final position and facing will be exactly 
  //the same as its starting position and facing.
  public void drawTwoLshapes(Color c1, Color c2) {
    System.out.println("Inside drawTwoLshapes");
     this.drawLshape(c1, c2);
     this.left();
     this.drawLshape(c1, c2);
     this.left();
  }
  
  //Moves the buggle backward, then turns it left,
  //then moves it forward and then turns it right.
  public void backLeftFwRight(int steps) {
    this.backward(steps);
    this.left();
    this.forward(steps);
    this.right();
  }
  
  //Moves the buggle backward, then turns it right,
  //then moves it forward and then turns it left.
  public void backRightFwLeft(int steps) {
    this.backward(4);
    this.right();
    this.forward(4);
    this.left();
  }
}