private static void MoveNext(WanderClient client, bool append)
{
if (!client.unit.isAlive)
{
StopWander(client.unit);
return;
}
Vector3 pos = Vector3.zero;
int attempts = 0;
while (attempts < bailAfterFailedAttempts)
{
pos = client.unit.position + (Random.insideUnitSphere.normalized.OnlyXZ() * Random.Range(client.minimumDistance, client.radius));
var grid = GridManager.instance.GetGrid(pos);
if (grid != null)
{
var cell = grid.GetCell(pos, true);
if (cell.IsWalkableWithClearance(client.unit))
{
client.unit.MoveTo(cell.position, append);
return;
}
}
attempts++;
}
//If we didn't find a wander point, stop wandering.
StopWander(client.unit);
}
private static void Start(WanderClient client)
{
MoveNext(client.unit.gameObject, false);
if (client.lingerForSeconds == 0.0f)
{
MoveNext(client.unit.gameObject, true);
}
}
/// <summary>
/// Makes the specified unit wander around at random.
/// </summary>
/// <param name="unit">The unit.</param>
/// <param name="radius">The radius within which to wander (seen from the unit center).</param>
/// <param name="minimumDistance">The minimum distance to wander, each time a new destination is picked.</param>
/// <param name="lingerForSeconds">How many seconds to linger at each destination before moving on.</param>
public static void Wander(this IUnitFacade unit, float radius, float minimumDistance, float lingerForSeconds)
{
if (_handler == null)
{
_handler = new Handler();
}
var client = new WanderClient
{
radius = radius,
minimumDistance = minimumDistance,
lingerForSeconds = lingerForSeconds,
unit = unit
};
_clients.Add(unit.gameObject, client);
Start(client);
}
