// 파일명 : ./Chapter12/CharacterMovementOnMap.java

	import java.util.Scanner;

	import move.ObjectOnMap;

	public class CharacterMovementOnMap

	{

		// 프로그램 시작 

1		public static void main( String args[] ) {

			Scanner scan = new Scanner( System.in );

			// 캐릭터 및 맵 초기화 

			int[][] map = {

			               { 1,1,1,1,1,1,1,1,1 },

			               { 1,0,0,0,1,0,0,0,1 },

			               { 1,1,1,0,1,0,1,1,1 },

			               { 1,0,0,0,1,0,0,0,1 },

			               { 1,0,1,1,1,1,1,0,1 },

			               { 1,0,0,0,0,0,0,0,1 },

			               { 1,1,1,1,1,1,1,1,1 }

			              } ;

2			ObjectOnMap character =

3			                        new ObjectOnMap( map, 2, 1 );

			char direction='d';

4			do {

				// 캐릭터 이동하기 

5				character.move( direction );

				// 캐릭터 및 전체 맵 출력 

6				System.out.println(

7				                    character );

				// 캐릭터의 다음 이동 방향 입력 받기 

				System.out.print( "WASD와[Enter]를 입력하세요: " );

				direction= scan.nextLine().charAt(0);

8			} while( ( direction == 'W' ) || ( direction == 'A' ) || ( direction == 'S' ) || ( direction == 'D' )

			      || ( direction == 'w' ) || ( direction == 'a' ) || ( direction == 's' ) || ( direction == 'd' ) );

			scan.close();

		// 프로그램 종료 

9		}

	}

	// 파일명 : ./src/move/ObjectOnMap.java

	package move;

	// 맵에 있는 캐릭터 클래스  

	public class ObjectOnMap

	{

		protected int[][] map;

		protected int x, y, minX, minY, maxX, maxY;

		protected final int LEFT = -1, RIGHT = 1, UP = -1, DOWN = 1, STOP = 0;

		protected final int PATH = 0, WALL = 1, CHARACTER = 2;

		protected final String symbol[] = { "  ", "\033[44m   \033[0m", "옷" };

P1b		public ObjectOnMap( int[][] map, int x, int y ) {

			this.map = map;

			this.x = x;

			this.y = y;

			this.minX = 0;

			this.minY = 0;

			this.maxX = ( map == null ) ? 0 : map[0].length-1;

			this.maxY = ( map == null ) ? 0 : map.length-1;

P1e		}

		// 캐릭터 이동 

P2b		public void move( char direction ) {

			// 이동 방향 확인  

			switch( direction ) {

				case 'W' :  case 'w' :

P21					move( STOP, UP );

					break;

				case 'A' :  case 'a' :

P22					move( LEFT, STOP );

					break;

				case 'S' :  case 's' :

P23					move( STOP, DOWN );

					break;

				case 'D' :  case 'd' :

P24					move( RIGHT, STOP );

					break;

			}

P2e		}

		// 벽인지 허용 범위인지 확인하고 캐릭터 이동 

P3b		public void move( int directionX, int directionY ) {

			if( map[this.y+directionY ][this.x+directionX]== WALL )

				return;

			this.x += directionX;

			this.y += directionY;

			this.x = ( this.x <= minX ) ? minX : this.x;

			this.y = ( this.y <= minY ) ? minY : this.y;

			this.x = ( this.x >= maxX ) ? maxX : this.x;

			this.y = ( this.y >= maxY ) ? maxY : this.y;

P3e		}

		// 캐릭터 및 전체 맵 표현 

		@Override

P4b		public String toString() {

			String strMap = "";

			for( int y = minY; y <= maxY; y++ ) {

				for( int x = minX; x <= maxX; x++ ) {

					if ( ( this.x == x ) && ( this.y == y ) )

						strMap += symbol[CHARACTER];

					else

						strMap += symbol[map[y ][x]] ;

				}

				strMap += "\n";

			}

			return strMap;

P4e		}

	}