@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (!(obj instanceof Action))
			return false;
		Action other = (Action) obj;
		if (tiles == null) {
			if (other.tiles != null)
				return false;
		} else if (!tiles.equals(other.tiles))
			return false;
		if (type == null) {
			if (other.type != null)
				return false;
		} else if (!type.equals(other.type))
			return false;
		return true;
	}