/**
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.examples.pacman;
public class Direction {
public static final int NONE = 0;
public static final int LEFT = -1;
public static final int RIGHT = 1;
public static final int UP = 1;
public static final int DOWN = -1;
private Character character;
private int horizontal;
private int vertical;
public Direction(Character character,
int horizontal,
int vertical) {
this.character = character;
this.horizontal = horizontal;
this.vertical = vertical;
}
public Character getCharacter() {
return character;
}
public int getHorizontal() {
return horizontal;
}
public int getVertical() {
return vertical;
}
public static Direction newDirection(Character character,
DirectionEnum directionEnum) {
switch ( directionEnum ) {
case LEFT : {
return new Direction( character,
-1,
0 );
}
case RIGHT : {
return new Direction( character,
1,
0 );
}
case UP : {
return new Direction( character,
0,
1 );
}
case DOWN : {
return new Direction( character,
0,
-1 );
}
default : {
}
}
throw new IllegalArgumentException( "Direction must be a valid DirectionEnum" );
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((character == null) ? 0 : character.hashCode());
result = prime * result + horizontal;
result = prime * result + vertical;
return result;
}
@Override
public boolean equals(Object obj) {
if ( this == obj ) return true;
if ( obj == null ) return false;
if ( getClass() != obj.getClass() ) return false;
Direction other = (Direction) obj;
if ( character == null ) {
if ( other.character != null ) return false;
} else if ( !character.equals( other.character ) ) return false;
if ( horizontal != other.horizontal ) return false;
if ( vertical != other.vertical ) return false;
return true;
}
@Override
public String toString() {
if ( horizontal != 0 ) {
return "Direction " + character + " " + ((horizontal == LEFT) ? "LEFT" : "RIGHT");
} else {
return "Direction " + character + " " + ((vertical == UP) ? "UP" : "DOWN");
}
}
}