// class Floor.java
//:Assignment 4:
//:Student Name: Duo Zhou
//:Studnet Number: 722452
/**FileName: Floor.java
 * Date: July, 27, 2000
 * Purpose: Learn how to use JFrame, JPanel, Synchronized method, creating
 *          multithread, the basic idea of creating GUI
 * Name of Files: This assignment include Building.java, ConnectedWall.java,
 *                Elevator.java, ElevatorFrame.java, ElevatorPanel.java,
 *				  Floor.java, MailDeliveryApp.java, MailPiece.java,
 *				  Position.java, Robot.java
 * Brief Discription: Nothing is changed from the original sample file.
 */
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;
import java.util.*;

import javax.swing.*;
import javax.swing.border.*;
import java.lang.*;

public class Floor {

  public static final int MAX_ROWS=33; // specify maximum floor dimensions
  public static final int MAX_COLS=37;

  public static final int MAX_ROOMS = 27;
  public static final int MAX_WALLS = 2;

  public static final int UPPER_LEFT_ROW = 24;  // elevator ULCorner
  public static final int UPPER_LEFT_COL = 30;
  public static final int LOWER_RIGHT_ROW = 28; // elevator LRCorner
  public static final int LOWER_RIGHT_COL = 36;

  public static final int INSIDE_ELEVATOR_ROW = 26; // position inside elevator
  public static final int INSIDE_ELEVATOR_COL = 34;
    public static final Position INSIDE_ELEVATOR_POS = new Position(INSIDE_ELEVATOR_ROW,
                                                              INSIDE_ELEVATOR_COL);
  public static final int INFRONT_ELEVATOR_ROW = 26; // position inside elevator
  public static final int INFRONT_ELEVATOR_COL = 29;
   public static final Position INFRONT_ELEVATOR_POS = new Position(INFRONT_ELEVATOR_ROW,
                                                              INFRONT_ELEVATOR_COL);
  public static final int MAIL_START_ROW = 24;
  public static final int MAIL_START_COL = 29;
   public static final Position MAIL_START = new Position(MAIL_START_ROW,MAIL_START_COL);


  // this array holds the floorLayout as specified in the assignment write-up
  public char[][] floorLayout  = new char[Floor.MAX_ROWS][Floor.MAX_COLS];

  // this array holds the set of connected walls, containing the starting and stopping
  // positions for each connected wall objects on this floor.
  public ConnectedWall[] connectedWalls = new ConnectedWall[Floor.MAX_WALLS];

  // this array holds the directory giving position for each mailBoxNum
  // The index is used as the associated MailBox number
  public Position[] directory = new Position[Floor.MAX_ROOMS]; //***
  //****************************************************************

  Floor(char[][] floorLayout ){
    this.floorLayout = floorLayout;
  }// end of Floor() constructor

  Floor( char[][] floorLayout, Position[] directory){
    this.floorLayout = floorLayout;
    this.directory = directory;
  } // end of Floor() constructor


//////////////////////////////////////////////////////
// This method returns the position of mailBoxNumber
  public Position getMBoxPos(int mailBoxNumber){

    return directory[mailBoxNumber];

  }// end of getMBoxPos()

//////////////////////////////////////////////////////
// This method returns the character stored in a given tile position
  char getTile(Position pos){
    if(pos.row >= 0 && pos.row <= MAX_ROWS &&
       pos.col >= 0 && pos.col <= MAX_COLS
      ) {
      return floorLayout[pos.row][pos.col];
  	}
    else{
      System.out.println("Floor:getTile(): Invalid coordinates received");
      return '\0';
    }
  } // end of getTile()

//////////////////////////////////////////////////////
// This method assigns a character to the tile at a given position
  void setTile(Position pos, char tileSymbol){
   if(pos.row >= 0 && pos.row <= MAX_ROWS &&
       pos.col >= 0 && pos.col <= MAX_COLS
      ) {
	    floorLayout[pos.row][pos.col] = tileSymbol ;
	    //printLayout();
	}
    else{
      System.out.println("Floor:setTile(): Invalid coordinates received");
    }
    //new Floor(m_parent);
  } // end of setTile()

//////////////////////////////////////////////////////
// This method prints the floor layout for this floor
void printLayout(){
  System.out.print("\n");
  for(int i=0; i < floorLayout.length; i++){
    for(int j=0; j< floorLayout[i].length; j++){
      System.out.print(floorLayout[i][j]);
    }
    //if(i == floorLayout.length/2)
    //  pause(3.0);
    System.out.print("\n");
  }
  //pause(3.0);
}// end of printLayout()

//////////////////////////////////////////////////////
// This method determines if a tile is part of wall
  boolean isWall(Position pos){
    if(floorLayout[pos.row][pos.col] == '-' ||
       floorLayout[pos.row][pos.col] == '+' ||
       floorLayout[pos.row][pos.col] == '|' ||
       floorLayout[pos.row][pos.col] == 'M' ||  // check for MailPieces
       floorLayout[pos.row][pos.col] == 'H' ||  // check for Humans
       floorLayout[pos.row][pos.col] == '*'
      )
      return true;
    else
      return false;
  }// end of isWall()

//////////////////////////////////////////////////////
// This method determines if a tile is a MailBox
  boolean isMailBox(Position pos){
    if(floorLayout[pos.row][pos.col] == '*')
      return true;
    else
      return false;
  } // end of isMailBox()

//////////////////////////////////////////////////////
// This method determines if a tile is a Human
  boolean isHuman(Position pos){
    if(floorLayout[pos.row][pos.col] == 'H')
      return true;
    else
      return false;
  } // end of isHuman()

//////////////////////////////////////////////////////
// This method determines if a coordinate is inside the elevator area
  boolean inElevator(Position pos){
    if( pos.row > UPPER_LEFT_ROW  && pos.row < LOWER_RIGHT_ROW &&
        pos.col > UPPER_LEFT_COL  && pos.col < LOWER_RIGHT_COL   )
      return true;
    else
      return false;
  }// end of inElevator() method

////////////////////////////////////////////////////
// This method determines if a coordinate is one of the wall start/stop positions
  boolean isStartStop(Position pos){
    for(int i=0 ; i<this.connectedWalls.length; i++){
      if(this.connectedWalls[i]!=null){
        if(this.connectedWalls[i].startPos.equal(pos) ||
             this.connectedWalls[i].stopPos.equal(pos)  )
          return true;
      }
    }
    return false;
  }


  //////////////////////////////////////////////////////////////////////////
  // This method searches for the position of a wall along a given direction
  // and starting at a startPosition
  Position findWall(Position startPosition, int direction){
      int row=startPosition.row;
      int col=startPosition.col;
    switch(direction){ // we assume start position is surrounded by walls
      case Robot.NORTH:
            while( !this.isWall( new Position(row,col)) ){
              row = row-1;
            }
            break;
      case Robot.EAST:
            while( !this.isWall( new Position(row,col)) ){
              col = col+1;
            }
            break;
      case Robot.SOUTH:
            while( !this.isWall( new Position(row,col)) ){
              row = row+1;
            }
            break;
      case Robot.WEST:
            while( !this.isWall( new Position(row,col)) ){
              col = col-1;
            }
            break;
      default:
            System.out.println("Error:findWall: Invalid search direction");
    } // end of switch()

    return new Position(row,col);

  }// end of findWall()

  void pause(double seconds){
    try{
        Thread.sleep((long)(1000.0*seconds));
    }catch(InterruptedException e){ }
  } // end of pause()

} /* end of class floor */
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