Colony

//current robot to check in the iterator

int iteratorCount = 0;

 * Returns the number of robots in the token ring.

 *

 * @return the number of robots in the token ring

 **/

int wl_token_get_robots_in_ring(void)

{

	return sensor_matrix_get_joined(sensorMatrix);

}

/**

 * Returns true if the specified robot is in the token ring, false

 * otherwise.

 *

 * @param robot the robot to check for whether it is in the token ring

 * @return nonzero if the robot is in the token ring, zero otherwise

 **/

int wl_token_is_robot_in_ring(int robot)

{

	return sensor_matrix_get_in_ring(sensorMatrix, robot);

}

/**

 * Begins iterating through the robots in the token ring.

 *

 * @see wl_token_iterator_has_next, wl_token_iterator_next

 **/

void wl_token_iterator_begin(void)

{

	int i;

	iteratorCount = 0;

	while (!sensor_matrix_get_in_ring(sensorMatrix, i) &&

			i < sensor_matrix_get_size(sensorMatrix))

		i++;

	if (i == sensor_matrix_get_size(sensorMatrix))

		i = -1;

}

/**

 * Returns true if there are more robots in the token ring

 * to iterate through, and false otherwise.

 *

 * @return nonzero if there are more robots to iterate through,

 * zero otherwise

 *

 * @see wl_token_iterator_begin, wl_token_iterator_next

 **/

int wl_token_iterator_has_next(void)

{

	return iteratorCount == -1;

}

/**

 * Returns the next robot ID in the token ring.

 *

 * @return the next robot ID in the token ring, or -1 if none exists

 *

 * @see wl_token_iterator_begin, wl_token_iterator_has_next

 **/

int wl_token_iterator_next(void)

{

	int result = iteratorCount;

	if (result < 0)

		return result;

	iteratorCount++;

	while (!sensor_matrix_get_in_ring(sensorMatrix, iteratorCount) &&

		iteratorCount < sensor_matrix_get_size(sensorMatrix))

		iteratorCount++;

	if (iteratorCount == sensor_matrix_get_size(sensorMatrix))

		iteratorCount = -1;

	return result;

}

/**